CN110297188B - Storage battery monitoring system - Google Patents
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- CN110297188B CN110297188B CN201910671688.9A CN201910671688A CN110297188B CN 110297188 B CN110297188 B CN 110297188B CN 201910671688 A CN201910671688 A CN 201910671688A CN 110297188 B CN110297188 B CN 110297188B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 71
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- 238000007599 discharging Methods 0.000 claims description 12
- 238000004891 communication Methods 0.000 claims description 9
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- 238000009529 body temperature measurement Methods 0.000 description 2
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
- G01R31/3842—Arrangements for monitoring battery or accumulator variables, e.g. SoC combining voltage and current measurements
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Abstract
The invention is suitable for the technical field of data monitoring, and discloses a storage battery monitoring system, which comprises a storage battery pack, a parameter concentrator and a server; the battery pack includes a plurality of batteries connected in series; the storage battery is internally provided with a battery unit and a measuring unit; the measuring unit is used for measuring the parameters of the corresponding battery unit in real time; the parameter concentrator is used for reading the parameters of the corresponding battery units measured by each measuring unit and uploading the read parameters to the server; and the server is used for determining whether the parameters of each battery unit exceed the corresponding parameter threshold according to the read parameters and the preset parameter threshold. The invention can monitor each storage battery, and can find the storage battery with abnormity in time, so that the working personnel can overhaul in time; through the storage battery with the built-in measuring unit, extra external wiring is not needed, the measuring unit is not interfered by external environment, and the accuracy and the reliability of a monitoring result can be improved.
Description
Technical Field
The invention belongs to the technical field of data monitoring, and particularly relates to a storage battery monitoring system.
Background
With the progress of society and the continuous improvement of informatization and automation degree, the dependence degree of people on electric power is further deepened, and simultaneously, higher requirements are put forward on the reliability of a power supply system. In an electric power system substation, a direct current power supply plays an extremely important role in the system as a control protection and power operation power supply. At ordinary times, the storage battery is in a floating charging standby state, the station-to-station alternating current is converted into direct current through the rectifying equipment to supply power to the load, and under the condition that the alternating current is lost or in other accident states, the storage battery is the only energy supplier of the load, once a problem occurs, a power supply system is in paralysis, and the equipment is shut down and other major operation accidents are caused, so that the storage battery is very necessary to be monitored.
At present, the mode that external monitoring devices are generally adopted by a direct-current power supply system of a transformer substation monitors storage batteries, but the quantity of the storage batteries in each group of storage batteries is large, the external monitoring devices need to monitor each storage battery, a large number of external lines are needed, exposed lines have many risks, for example, small animals are bitten or workers touch by mistake, and the like, so that the monitoring result is easy to cause inaccuracy.
Disclosure of Invention
In view of this, the embodiment of the present invention provides a storage battery monitoring system, so as to solve the problem in the prior art that an inaccurate monitoring result is easily caused by monitoring a storage battery by using an external monitoring device.
The embodiment of the invention provides a storage battery monitoring system, which comprises a storage battery pack, a parameter concentrator and a server, wherein the storage battery pack comprises a storage battery pack, a parameter concentrator and a storage battery;
the battery pack includes a plurality of batteries connected in series;
the storage battery is internally provided with a battery unit and a measuring unit;
the measuring unit is used for measuring the parameters of the corresponding battery unit in real time;
the parameter concentrator is used for reading the parameters of the corresponding battery units measured by each measuring unit and uploading the read parameters to the server;
and the server is used for determining whether the parameters of each battery unit exceed the corresponding parameter threshold according to the read parameters and the preset parameter threshold.
Optionally, the storage battery monitoring system further comprises an electric signal acquisition module;
the electric signal acquisition module is used for acquiring the voltage and the current of the storage battery pack;
the parameter concentrator is also used for reading the voltage and the current of the storage battery pack acquired by the electric signal acquisition module and uploading the voltage and the current of the storage battery pack to the server;
the server is also used for calculating the residual capacity of the storage battery pack according to the current of the storage battery pack, judging whether the voltage of the storage battery pack exceeds a preset storage battery pack voltage threshold value, and if the voltage of the storage battery pack exceeds the storage battery pack voltage threshold value, performing storage battery pack voltage out-of-limit alarm.
Optionally, the parameter comprises a voltage, a resistance and a temperature, and the parameter threshold comprises a battery voltage threshold, a resistance threshold and a temperature threshold;
the method for determining whether the parameter of each battery unit exceeds the corresponding parameter threshold value by the server according to the read parameter and the preset parameter threshold value comprises the following steps:
the server respectively judges whether the voltage of each battery unit exceeds the voltage threshold of the storage battery, and if a first battery unit with the voltage exceeding the voltage threshold of the storage battery exists, the server performs out-of-limit alarm on the voltage of the first battery unit;
respectively judging whether the resistance of each battery unit exceeds a resistance threshold value, and if a second battery unit with the resistance exceeding the resistance threshold value exists, performing resistance out-of-limit alarm on the second battery unit;
and respectively judging whether the temperature of each battery unit exceeds a temperature threshold value, and if a third battery unit with the temperature exceeding the temperature threshold value exists, performing out-of-limit alarm on the temperature of the third battery unit.
Optionally, the parameter comprises a resistance;
the server is also used for generating a resistance curve of the storage battery pack according to the resistance of each battery unit and determining whether the storage battery pack is abnormal or not according to the resistance curve of the storage battery pack.
Optionally, the server is further configured to send a control instruction for performing a capacity test to the parameter concentrator if it is determined that the storage battery pack is abnormal, receive monitoring data uploaded by the parameter concentrator during the capacity test, and determine performance of the storage battery pack according to the monitoring data during the capacity test.
Optionally, the battery monitoring system further includes a discharge module and a discharge load box;
the opening module is used for receiving a control instruction which is sent by the parameter concentrator and used for carrying out the nuclear capacity test when the nuclear capacity test is carried out, and closing an opening contact for connecting a power supply of the discharging load box according to the control instruction for carrying out the nuclear capacity test;
and the discharge load box is used for carrying out a nuclear capacity test on the storage battery pack after the power supply is switched on.
Optionally, a battery peripheral switch;
the switch is used for controlling the opening and closing of the corresponding measuring unit.
Optionally, the battery monitoring system further comprises an opening module;
the opening module is used for monitoring the state of the switch of each storage battery;
the parameter concentrator is also used for reading the switch states of the storage batteries monitored by the switch-in module and uploading the read switch states of the storage batteries to the server;
the server is also used for determining whether the storage battery with abnormal switch exists according to the state of the switch of each storage battery.
Optionally, the storage battery is externally provided with a network port;
and the storage batteries are in series communication through the network ports.
Optionally, the parameter concentrator sequentially reads the parameters of the corresponding battery cells measured by each measurement unit according to a sequential access mechanism.
Compared with the prior art, the embodiment of the invention has the following beneficial effects: the storage battery monitoring system provided by the embodiment of the invention comprises a storage battery pack, a parameter concentrator and a server, wherein the storage battery pack comprises a plurality of storage batteries which are connected in series, a battery unit and a measuring unit are arranged in each storage battery, the measuring unit measures the parameters of the corresponding battery unit in real time, the parameter concentrator reads the parameters of the corresponding battery unit measured by each measuring unit and uploads the read parameters to the server, and the server determines whether the parameters of each battery unit exceed the corresponding parameter threshold according to the read parameters and a preset parameter threshold. According to the embodiment of the invention, the storage battery with the built-in measuring unit is adopted, no extra external wiring is needed, and the measuring unit is not interfered by external environment, so that the accuracy and reliability of the monitoring result can be improved; the server determines whether the parameters of each battery unit exceed the corresponding parameter threshold according to the read parameters and the preset parameter threshold, and can find the storage battery with abnormity in time so as to facilitate the staff to overhaul in time.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a battery monitoring system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a battery monitoring system according to another embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
The terms "comprises" and "comprising," and any variations thereof, in the description and claims of this invention and the above-described drawings are intended to cover non-exclusive inclusions. For example, a process, method, or system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus. Furthermore, the terms "first," "second," and "third," etc. are used to distinguish between different objects and are not used to describe a particular order.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
Fig. 1 is a schematic structural diagram of a battery monitoring system according to an embodiment of the present invention. As shown in fig. 1, the battery monitoring system 10 includes a battery pack 101, a parameter concentrator 102, and a server 103; battery pack 101 includes a plurality of batteries 1010 connected in series; the battery 1010 incorporates a battery unit 1011 and a measurement unit 1012.
The measuring unit 1012 is used for measuring the parameters of the corresponding battery unit 1011 in real time; the parameter concentrator 102 is configured to read parameters of the corresponding battery cells 1011 measured by each measurement unit 1012, and upload the read parameters to the server 103; the server 103 is configured to determine whether the parameter of each battery cell 1011 exceeds the corresponding parameter threshold according to the read parameter and a preset parameter threshold.
In the present embodiment, the battery cell 1011 is a device capable of converting chemical energy into electrical energy, and recharging can be achieved through a reversible chemical reaction. During charging, the internal active substance is regenerated by using external electric energy, and the electric energy is stored as chemical energy; when discharging, the chemical energy is converted into electric energy to be output. The measurement unit 1012 is a device that measures parameters of the battery unit 1011. The battery unit 1011 and the measurement unit 1012 are located inside the housing of the battery 1010. The measurement unit 1012 may be embedded on an integrated circuit board in corrosion-resistant contact with the electrolyte of the battery cell 1011. A pole is arranged outside the housing of the battery 1010. A plurality of batteries 1010 are connected in series by poles to constitute a battery pack 101.
Optionally, before the battery 1010 is put into use, the accuracy and reliability of the parameter measurement of the battery unit 1011 by the measurement unit 1012 are verified through multiple tests, then a special mold is used for manufacturing the housing of the battery 1010, the battery unit 1011 and the measurement unit 1012 are embedded into the housing, multiple laboratory tests are performed on the battery 1010 to verify the performance, finally the battery 1010 and other devices or modules in the battery monitoring system work together to perform field tests and field practice operation, the found problems are corrected, and the performance of the battery 1010 is better.
The parameter concentrator 102 serves as a bridge between the data monitoring module (e.g., each measurement unit 1012 in the battery pack 101) and the server 103, and can store relevant setting information of the server 103, read monitoring data of the data monitoring module periodically or in real time, store the monitoring data, and upload the monitoring data to the server. Optionally, the parameter concentrator 102 may also determine whether the monitoring data exceeds the threshold of the corresponding monitoring data according to a preset threshold of the monitoring data, and if there is monitoring data that exceeds the threshold of the corresponding monitoring data, generate out-of-limit alarm data according to the monitoring data, and upload the out-of-limit alarm data to the server 103. In this embodiment, the monitoring data may include parameters of the corresponding battery cells measured by the respective measurement units. The measurement unit 1012 and the battery unit 1011 included in a certain battery 1010 are corresponding to each other, that is, the battery unit corresponding to the measurement unit is a battery unit included in the battery where the measurement unit is located, and the measurement unit corresponding to the battery unit is a measurement unit included in the battery where the battery unit is located.
Optionally, before the parameter concentrator 102 is put into use, a communication acquisition test with the data monitoring module, a data storage test, a data out-of-limit judgment test, a communication test with the server, and the like are performed on the parameter concentrator 102, then the influence of a severe electromagnetic environment on the parameter concentrator 102 is simulated in a laboratory, a comprehensive test is performed, the reliability of the parameter concentrator 102 is tested, and finally a field test is performed to perfect the performance of the parameter concentrator 102.
The server 103 is configured to perform data processing on the monitoring data uploaded by the parameter concentrator 102 to obtain data with an exception. Specifically, whether the parameter of each battery unit 1011 exceeds the corresponding parameter threshold is determined according to the preset parameter threshold, and if there is a battery unit with a parameter exceeding the corresponding parameter threshold, a corresponding alarm is given. Optionally, the server 103 may send information of the battery unit of which the parameter exceeds the corresponding parameter threshold to the monitoring terminal, so as to remind a worker to overhaul the storage battery in which the battery unit is located. The information of the battery unit may include a number of a storage battery where the battery unit is located. The monitoring terminal may be a terminal device of a monitoring center, for example, a desktop computer, a notebook, etc.; the mobile terminal can also be a mobile terminal of a worker, for example, a mobile phone and the like.
Optionally, before the server 103 is put into use, module division, module programming and module testing are performed to obtain a functional module which works stably, then software integration and comprehensive testing are performed to generate a software system of the server 103 which can work independently, then the server 103 is connected with various data acquisition modules in a laboratory to simulate a working site, comprehensive testing is performed to test the usability and reliability of the server, and finally field testing is performed to improve the performance of the server 103.
As can be seen from the above description, in the embodiment of the present invention, the storage battery with the built-in measurement unit is adopted, and the external monitoring device is wirelessly connected to the outside of the storage battery, so that external wiring can be reduced, the operation is simple, the risk of the external wiring can be reduced, the measurement unit is not interfered by the external environment, and the accuracy and reliability of the monitoring result can be improved; the server determines whether the parameters of each battery unit exceed the corresponding parameter threshold according to the read parameters and the preset parameter threshold, and can find abnormal storage batteries in time, so that workers can overhaul the storage batteries in time, the operation and maintenance cost can be reduced, the service life of the storage batteries is prolonged, and the economic and environment-friendly benefits are improved.
Fig. 2 is a schematic structural diagram of a battery monitoring system according to another embodiment of the present invention. In one embodiment of the present invention, as shown in fig. 2, the battery monitoring system 10 further includes an electrical signal acquisition module 104;
the electric signal acquisition module 104 is used for acquiring the voltage and the current of the storage battery pack 101;
the parameter concentrator 102 is further configured to read the voltage and current of the storage battery pack 101 collected by the electrical signal collection module 104, and upload the voltage and current of the storage battery pack to the server 103;
the server 103 is further configured to calculate the remaining capacity of the storage battery pack according to the current of the storage battery pack, determine whether the voltage of the storage battery pack exceeds a preset storage battery pack voltage threshold, and perform a storage battery pack voltage out-of-limit alarm if the voltage of the storage battery pack exceeds the storage battery pack voltage threshold.
In an embodiment of the present invention, the electrical signal collection module 104 may collect the voltage and current of the whole set of the battery pack 101, wherein the collected current may include the charging current, the discharging current and the float current of the battery pack 101. The accuracy of the charging current, the discharging current and the float current may be 1%.
Optionally, before the electrical signal acquisition module 104 is put into use, a current transformer measurement test is performed first, the measurement accuracy is corrected, a voltage measurement test is performed, then currents and voltages under various conditions are simulated in a laboratory, a comprehensive test is performed, the reliability of the electrical signal acquisition module 104 is tested, and finally a field test is performed, so that the performance of the electrical signal acquisition module 104 is improved.
The parameter concentrator 102 may read the voltage and current of the secondary battery pack 101 collected by the electrical signal collection module 104 and transmit the voltage and current of the secondary battery pack 101 to the server 103. The electrical signal acquisition module 104 and the parameter concentrator 102 can communicate with each other by an RS485 serial communication line.
The server 103 may calculate the remaining capacity of the secondary battery pack 101 from the current of the secondary battery pack. Specifically, the server 103 may generate a curve of the discharge current and time, i.e., the abscissa of the curve is time and the ordinate is the discharge current. The area enclosed by the curve in the discharging time and the horizontal and vertical axes is the discharging capacity, if the discharging current keeps unchanged, the discharging capacity can be obtained by directly multiplying the discharging current by the discharging time, and the residual capacity of the storage battery pack 101 can be obtained by subtracting the discharging capacity from the total capacity of the storage battery pack 101.
The server 103 may also determine whether the voltage of the storage battery pack exceeds the voltage threshold of the storage battery pack according to a preset voltage threshold of the storage battery pack, and perform a storage battery pack voltage out-of-limit alarm if the voltage of the storage battery pack exceeds the voltage threshold of the storage battery pack.
Alternatively, the server 103 may transmit the curves of the remaining capacity of the battery pack, the discharge current and the time, the voltage of the battery pack, and the determination result of whether the voltage of the battery pack exceeds the voltage threshold of the battery pack to the monitoring terminal, so that the worker can grasp the state of the battery pack in real time.
The above description shows that the embodiment of the invention can monitor the overall performance of the storage battery pack, can enable workers to timely master the state of the storage battery pack, can timely overhaul the storage battery pack if the storage battery pack is abnormal, and can prolong the service life of the storage battery pack.
In one embodiment of the invention, the parameters include voltage, resistance and temperature, and the parameter thresholds include a battery voltage threshold, a resistance threshold and a temperature threshold;
the method for determining whether the parameter of each battery unit exceeds the corresponding parameter threshold value by the server 103 according to the read parameter and the preset parameter threshold value is as follows:
the server 103 respectively judges whether the voltage of each battery unit exceeds the voltage threshold of the storage battery, and if a first battery unit with the voltage exceeding the voltage threshold of the storage battery exists, the first battery unit is subjected to out-of-limit alarm;
respectively judging whether the resistance of each battery unit exceeds a resistance threshold value, and if a second battery unit with the resistance exceeding the resistance threshold value exists, performing resistance out-of-limit alarm on the second battery unit;
and respectively judging whether the temperature of each battery unit exceeds a temperature threshold value, and if a third battery unit with the temperature exceeding the temperature threshold value exists, performing out-of-limit alarm on the temperature of the third battery unit.
In an embodiment of the present invention, the parameters of the battery cell 1011 measured by the measurement unit 1012 may include the voltage, resistance, and temperature of the battery cell 1011. Wherein the voltage measurement range is 1.6-2.5V, and the voltage measurement precision is +/-0.5%; the measurement range of the resistance is 0.05 milliohm to 250 milliohm, and the consistency of the resistance measurement is +/-2 percent; the temperature measurement range is-25 ℃ to 80 ℃, and the temperature measurement precision is +/-0.5 ℃. The parameter threshold values corresponding to the respective parameters are a storage battery voltage threshold value, a resistance threshold value and a temperature threshold value, respectively.
Alternatively, the server 103 may transmit information of the battery unit performing the out-of-limit alarm to the monitoring terminal. The information of the battery unit may include the number of the storage battery where the battery unit is located, the parameter value of the battery unit for performing the out-of-limit alarm, and the like.
As can be seen from the above description, the embodiment of the present invention can monitor each parameter of each storage battery, find a storage battery with a problem in time, and notify a worker to perform maintenance in time by alarming.
In one embodiment of the invention, the parameter comprises resistance;
the server 103 is also configured to generate a resistance curve of the battery pack 101 from the resistance of each battery cell 1011, and determine whether there is an abnormality in the battery pack 101 from the resistance curve of the battery pack.
In an embodiment of the present invention, the server 103 may generate a resistance curve of the battery pack 101 according to the resistance of each battery cell 1011. In the coordinate system of the resistance curve, there is a nominal resistance line, which is obtained by connecting the nominal resistance values of the individual storage batteries. Server 103 may determine whether an anomaly exists in battery pack 101 based on the nominal resistance line and the resistance curve of battery pack 101. The abscissa of the resistance curve is the number of the storage battery, the ordinate is the resistance of the battery cell 1011 included in each storage battery, and the resistance curve is obtained by connecting adjacent resistance values by a smooth curve.
Specifically, if the resistance curve of the battery pack 101 is smooth and close to the nominal resistance line, which indicates that the resistance deviation of each battery is small and close to the standard resistance and the performance of each battery is excellent, it is determined that there is no abnormality in the battery pack 101; if the resistance curve of the battery pack 101 is not smooth, the resistance values of the batteries are greatly different, or the resistance curve of the battery pack 101 is far from the nominal resistance line, which indicates that the resistance deviation of the batteries is large, or the resistance of most batteries is larger than the standard resistance, it is determined that the battery pack 101 is abnormal.
As can be seen from the above description, the embodiment of the present invention may monitor the internal resistances of the storage batteries, and determine whether the storage battery pack is abnormal according to the internal resistances of the storage batteries.
In an embodiment of the present invention, the server 103 is further configured to send a control instruction for performing a nuclear capacity test to the parameter concentrator 102 when there is an abnormality in the battery pack 101, receive monitoring data uploaded by the parameter concentrator 102 during the nuclear capacity test, and determine the performance of the battery pack 101 according to the monitoring data during the nuclear capacity test.
In one embodiment of the present invention, as shown in fig. 2, the battery monitoring system 10 further includes a discharge module 105 and a discharge load box 106;
the open module 105 is configured to receive a control instruction for performing a nuclear capacity test sent by the parameter concentrator 102 when performing the nuclear capacity test, and close an open contact for turning on a power supply of the discharge load box 106 according to the control instruction for performing the nuclear capacity test;
the discharge load box 106 is used for performing a capacity check test on the battery pack 101 after the power is turned on.
In the embodiment of the present invention, when there is an abnormality in the battery pack 101, the server 103 sends a control instruction for performing a capacity check test to the parameter concentrator 102. The parameter concentrator 102 sends the control instruction to the export module 105. The open module 105 closes an open contact for turning on the power supply of the discharge load box 106 according to the control command. After the power is turned on, the discharge load box 106 performs a capacity check test on the battery pack 101.
During the capacity check test, each measurement unit 1012 still measures the parameters of each corresponding battery cell 1011 to form monitoring data during the capacity check test, and the monitoring data during the capacity check test is uploaded to the server 103 through the parameter concentrator 102. The server 103 determines the performance of the battery pack 101 based on the monitored data during the capacity test. Specifically, the server 103 determines whether the resistance of each battery cell 1011 is greater than a preset standard resistance, and if the number of battery cells having the resistance greater than the standard resistance exceeds half of the number of the storage batteries 1010 included in the storage battery pack 101, it is determined that the performance of the storage battery pack 101 is poor, otherwise, it is determined that the performance of the storage battery pack 101 is good.
Optionally, the monitoring data during the nuclear capacity test may further include the voltage of the battery pack 101 acquired by the electrical signal acquisition module 104 during the nuclear capacity test. The server 103 may further determine whether the voltage of the storage battery pack 101 during the nuclear capacity test exceeds a preset storage battery pack preset threshold, and if the voltage of the storage battery pack 101 during the nuclear capacity test exceeds the preset storage battery pack preset threshold and the number of the battery cells with the resistance greater than the standard resistance exceeds half of the number of the storage batteries 1010 included in the storage battery pack 101, determine that the performance of the storage battery pack 101 is poor, otherwise determine that the performance of the storage battery pack 101 is good.
Optionally, the server 103 is further configured to send a storage battery pack replacement warning message to the monitoring terminal if it is determined that the performance of the storage battery pack 101 is poor. The storage battery pack replacement early warning information may include monitoring data during a nuclear capacity test, a serial number of a storage battery recommended to be replaced, and the like.
In the embodiment of the present invention, the egress module 105 is integrated into the parameter concentrator 102, and the egress module 105 can support 2-way switching value output. The discharge load box 106 is connected to a discharge terminal of the battery pack 101.
Optionally, before the development module 105 is put into use, the module is first subjected to comprehensive testing in a laboratory in a harsh electromagnetic environment, testing for reliability, and then subjected to field testing to improve its performance.
According to the embodiment of the invention, the capacity-checking test can be carried out when the storage battery pack is found to be abnormal, the performance of the storage battery pack can be judged according to the monitoring data during the capacity-checking test, the storage battery with problems can be pre-warned, the health state of the storage battery pack can be automatically analyzed, and unmanned online intelligent management of the storage battery pack is realized.
In one embodiment of the present invention, as shown in fig. 2, the battery 1010 is externally provided with a switch 1013;
the switch 1013 is used to control the on and off of the corresponding measurement unit 1012.
In the present embodiment, each storage battery 1010 has a switch 1013 for controlling the on and off of the measurement unit 1012. When the switch 1013 is turned on, the measurement unit 1012 performs measurement on the battery unit 1011, and when the switch 1013 is turned off, the measurement unit 1012 stops performing measurement on the battery unit.
Optionally, an indicator lamp is arranged outside the storage battery 1010; the indicator light is used to indicate the turning on and off of the corresponding measurement unit 1012.
Specifically, if the measurement unit 1012 is in an on state, the indicator light is on; if the measurement unit 1012 is in the off state, the indicator light is not on.
In one embodiment of the present invention, battery monitoring system 10 further includes an opening module 107;
the open module 107 is used for monitoring the state of the switch 1013 of each storage battery 1010;
the parameter concentrator 102 is further configured to read the state of the switch 1013 of each storage battery 1010 monitored by the switch-in module 107, and upload the read state of the switch 1013 of each storage battery 1010 to the server 103;
the server 103 is also configured to determine whether there is a storage battery 1010 with an abnormal switch, based on the state of the switch 1013 of each storage battery 1010.
In the embodiment of the present invention, the open-in module 107 is used for performing real-time online monitoring on the state of the dc switching value, and can support 8-way switching value input. The opening module 107 is integrated in the parameter concentrator 102. The switch-in module 107 may monitor the state of the switch 1013 of each battery 1010 and upload the state of the switch 1013 of each battery 1010 to the server 103 via the parameter concentrator 102.
The server 103 may determine whether there is a storage battery 1010 with an abnormal switch according to the state of the switch 1013 of each storage battery 1010. For example, if all the storage batteries 1010 are in an operating state, but the switch of a certain storage battery is in an off state, it is determined that the switch of the storage battery is abnormal, and so on.
Optionally, the switch-in module 107 may also monitor the state of the battery fuse and the state of the battery pack circuit breaker and upload the state of the battery fuse and the state of the battery pack circuit breaker to the server 103 via the parameter concentrator 102. The server 103 determines whether or not there is an abnormally operated battery according to the state of the battery fuse, and determines whether or not the battery pack is normally operated according to the state of the battery pack breaker.
Specifically, if a fuse of a certain storage battery is in an open state, the storage battery operates abnormally. And if the circuit breaker of the storage battery pack trips, the storage battery pack abnormally works.
Optionally, before the switching module 107 is put into use, a switching value acquisition test is performed first to verify the correctness of the switching value acquisition, switching value displacement under various conditions is simulated in a laboratory, a comprehensive test is performed to test the reliability of the switching module 107, and finally a field test is performed to perfect the performance of the switching module.
In one embodiment of the present invention, as shown in FIG. 2, battery 1010 is provided with a peripheral port 1014;
the batteries 1010 are in series communication through a network port 1014.
In the present embodiment, each battery 1010 is externally provided with a network port 1014. The net ports 1014 of the respective storage batteries 1010 can be connected in series by a net wire to perform communication.
In one embodiment of the present invention, the parameter concentrator 102 sequentially reads the parameters of the corresponding battery cells 1011 measured by the respective measurement units 1012 according to a sequential access scheme.
In the embodiment of the present invention, the parameter concentrator 102 reads the parameters of the corresponding battery cells 1011 measured by the measurement units 1012 in the storage battery 1010 one by one in the order of the storage battery 1010.
It should be noted that the above-described illustrated battery monitoring system embodiments are merely examples, and are not to be construed as limiting the battery monitoring system, and may include more or less components than those shown, or some components may be combined, or different components may be included. Such as devices, components or modules, etc., known to those skilled in the art.
Those of ordinary skill in the art will appreciate that the various illustrative modules/units described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, the division of the module or unit is only one logical function division, and there may be other division ways in actual implementation, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
In addition, functional modules and units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (7)
1. A storage battery monitoring system is characterized by comprising a storage battery pack, a parameter concentrator and a server;
the battery pack includes a plurality of batteries connected in series;
the storage battery is internally provided with a battery unit and a measuring unit;
the measuring unit is used for measuring the parameters of the corresponding battery unit in real time;
the parameter concentrator is used for reading the parameters of the corresponding battery units measured by each measuring unit and uploading the read parameters to the server;
the server is used for determining whether the parameters of each battery unit exceed the corresponding parameter threshold value according to the read parameters and the preset parameter threshold value;
the server is also used for generating a resistance curve of the storage battery pack according to the resistance of each battery unit and determining whether the storage battery pack is abnormal or not according to the resistance curve of the storage battery pack;
the abscissa of the resistance curve is the serial number of the storage battery, the ordinate is the resistance of the battery unit included in each storage battery, and the adjacent resistance values are connected by adopting a smooth curve to obtain the resistance curve; specifically, if the resistance curve of the storage battery pack is smooth and is close to a nominal resistance line, it is determined that the storage battery pack is not abnormal; if the resistance curve of the storage battery pack is not smooth, the resistance value difference of each storage battery is large, or the resistance curve of the storage battery pack is far away from a nominal resistance line, judging that the storage battery pack is abnormal;
the server is further used for sending a control instruction for performing a nuclear capacity test to the parameter concentrator when the storage battery pack is abnormal, receiving monitoring data uploaded by the parameter concentrator during the nuclear capacity test, and determining the performance of the storage battery pack according to the monitoring data during the nuclear capacity test;
the storage battery monitoring system also comprises an opening module;
the opening module is used for monitoring the state of the switch of each storage battery;
the parameter concentrator is also used for reading the switch states of the storage batteries monitored by the switching-in module and uploading the read switch states of the storage batteries to the server; the server is also used for determining whether the storage battery with abnormal switch exists according to the state of the switch of each storage battery;
the switching-in module also monitors the state of the storage battery fuse and the state of the storage battery pack circuit breaker, uploads the state of the storage battery fuse and the state of the storage battery pack circuit breaker to the server through the parameter concentrator, and the server judges whether the storage battery which works abnormally exists according to the state of the storage battery fuse.
2. The battery monitoring system of claim 1, further comprising an electrical signal acquisition module;
the electric signal acquisition module is used for acquiring the voltage and the current of the storage battery pack;
the parameter concentrator is also used for reading the voltage and the current of the storage battery pack acquired by the electric signal acquisition module and uploading the voltage and the current of the storage battery pack to the server;
the server is also used for calculating the residual capacity of the storage battery pack according to the current of the storage battery pack, judging whether the voltage of the storage battery pack exceeds a preset storage battery pack voltage threshold value, and if the voltage of the storage battery pack exceeds the storage battery pack voltage threshold value, giving out an out-of-limit alarm on the voltage of the storage battery pack.
3. The battery monitoring system of claim 1, wherein the parameters include voltage, resistance, and temperature, and the parameter thresholds include a battery voltage threshold, a resistance threshold, and a temperature threshold;
the method for the server to determine whether the parameter of each battery unit exceeds the corresponding parameter threshold value according to the read parameter and the preset parameter threshold value comprises the following steps:
the server respectively judges whether the voltage of each battery unit exceeds the voltage threshold of the storage battery, and if a first battery unit with the voltage exceeding the voltage threshold of the storage battery exists, the server performs out-of-limit alarm on the voltage of the first battery unit;
respectively judging whether the resistance of each battery unit exceeds the resistance threshold value, and if a second battery unit with the resistance exceeding the resistance threshold value exists, performing resistance out-of-limit alarm on the second battery unit;
and respectively judging whether the temperature of each battery unit exceeds the temperature threshold value, and if a third battery unit with the temperature exceeding the temperature threshold value exists, performing out-of-limit alarm on the temperature of the third battery unit.
4. The battery monitoring system of claim 1, further comprising an export module and a discharge load box;
the opening module is used for receiving the control instruction for the nuclear capacity test sent by the parameter concentrator during the nuclear capacity test, and closing an opening contact for switching on a power supply of the discharging load box according to the control instruction for the nuclear capacity test;
and the discharge load box is used for carrying out a nuclear capacity test on the storage battery pack after the power supply is switched on.
5. The battery monitoring system of claim 1, wherein the battery peripheral switch;
the switch is used for controlling the opening and closing of the corresponding measuring unit.
6. The battery monitoring system of claim 1, wherein the battery is externally provided with a network port;
and the storage batteries are in series communication through the network ports.
7. The battery monitoring system according to any one of claims 1 to 6, wherein the parameter concentrator sequentially reads the parameters of the corresponding battery cells measured by each measurement unit according to a sequential access mechanism.
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| CN112172601B (en) * | 2020-10-06 | 2021-06-22 | 千黎（苏州）电源科技有限公司 | Safety early warning method for battery of electric vehicle |
| CN114675191A (en) * | 2022-02-24 | 2022-06-28 | 国网宁夏电力有限公司中卫供电公司 | Device and method for testing capacity of storage battery pack without off-line |
| CN115061412A (en) * | 2022-07-19 | 2022-09-16 | 嘉兴市尚瑞电子科技有限公司 | Vehicle anti-feed controller for vehicle power management |
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