CN107611501B - Storage battery pack monitoring system, storage battery pack and single battery unit thereof - Google Patents
Storage battery pack monitoring system, storage battery pack and single battery unit thereof Download PDFInfo
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- CN107611501B CN107611501B CN201710718361.3A CN201710718361A CN107611501B CN 107611501 B CN107611501 B CN 107611501B CN 201710718361 A CN201710718361 A CN 201710718361A CN 107611501 B CN107611501 B CN 107611501B
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Abstract
The invention relates to a storage battery monitoring system, a storage battery and single battery units thereof, wherein the storage battery monitoring system comprises a storage battery and a monitoring unit, the storage battery comprises at least two single battery units, each single battery unit comprises a single battery body and an information acquisition unit which is integrated with the corresponding single battery body, the information acquisition unit is used for acquiring relevant data information of the corresponding single battery body, the information acquisition unit in each single battery unit is connected to an acquisition bus, and the monitoring unit is connected with the acquisition bus through a communication line so as to realize communication with each information acquisition unit. Therefore, data acquisition lines between the storage battery pack and the monitoring unit are greatly reduced, the acquisition lines are not required to be output by each single battery unit, the problem of attractive routing caused by more connecting lines between the storage battery pack and the monitoring unit is solved, and the problem of insufficient pole height caused by more pole acquisition lines is avoided.
Description
Technical Field
The invention relates to a storage battery pack monitoring system, a storage battery pack and a single battery unit thereof.
Background
At present, a valve-regulated lead-acid storage battery pack can provide a reliable control power supply for relay protection, safety devices, emergency lighting and the like and a reliable operation power supply for circuit breakers and the like under the condition that the station alternating current is lost, so that the valve-regulated lead-acid storage battery pack has a significant effect in a transformer substation. Meanwhile, the valve-controlled lead-acid storage battery is called a maintenance-free battery, the maintenance is not needed, such as water adding, acid adding, liquid changing and the like, the battery state is detected only by measuring the floating charge voltage, current and the like of the storage battery, the real capacity of the storage battery cannot be accurately measured, and the service life of the storage battery is predicted, so that the operation of the valve-controlled sealed lead-acid storage battery has many potential safety hazards, and the safe operation of a direct-current system is seriously influenced. If the laggard single batteries with problems cannot be found in time and replaced or disposed, the capacity of the single batteries with large areas is likely to be not required. Once the alternating current is suddenly interrupted, the consequences of the sudden interruption are not imaginable, which not only brings great hidden danger to information transmission, but also possibly causes great economic loss.
Therefore, many researchers analyze the failure mechanism of the storage battery pack according to the composition structure of the storage battery pack, detect parameters such as the voltage of the storage battery pack, the voltage of a single battery, the temperature of the single battery and the internal resistance of the single battery, and estimate the health state of the storage battery pack by referring to a large amount of experimental data in combination with algorithms such as fuzzy control and artificial neural networks. However, many of the detection methods need to detect parameters of the storage battery pack, so that the number of detection connecting lines is increased, the poles of the storage battery pack are just matched with the connecting lines between the batteries, and if the detection lines are increased, the heights of the poles are not met, so that the matching between the poles and the connecting lines between the batteries is problematic.
At present, the monitoring and maintenance technology of the station-use dc power storage battery pack is more and more researched, but the research is mainly research on detection technology, relation between state parameters and the storage battery pack, intelligent operation, and the like, and under the condition that the existing technology can meet functional requirements, there are many places to be improved in production, process, standardization, and the like.
An electrical principle schematic diagram of the existing storage battery pack state monitoring is shown in fig. 1, and acquired analog signals comprise single battery voltage, single battery temperature and single battery internal resistance. The voltage acquisition of the single battery needs to lead out two acquisition lines on a positive/negative pole column of the single battery, the number of the required single batteries is n according to the capacity required by a system, the voltage of a storage battery pack and the voltage of the single battery, and the number of the voltage acquisition lines of the single battery needs to be 2 x n and is connected to a storage battery acquisition unit; the temperature acquisition of the single battery needs to lead out 2 or 1 acquisition lines on a positive pole and a negative pole of the single battery or a shell of the single battery, and the temperature acquisition lines of the single battery need to be 2 x n or n according to the number n of the needed single batteries; acquiring the internal resistance of the single battery, namely selecting acquisition lines according to an internal resistance detection method, if 9 or 8 single batteries are divided into a group to be discharged according to a direct current discharge method (other combination modes are available), and acquiring n/9 x 2 or n/8 x 2 acquisition lines of the internal resistance of the single battery according to the number n of the required single batteries; therefore, the collection lines in the storage battery screen are quite a lot, meanwhile, the connecting lines on the pole columns are also many, the attractiveness of the wiring in the screen body is reduced, and potential safety hazards exist in the fixing of the pole columns. The storage battery acquisition unit uploads the state signal of the storage battery to the direct current monitoring unit in a communication mode.
Therefore, the existing storage battery pack has more monitoring connecting wires, namely, more transmission lines for collecting information between the storage battery pack and an external monitoring unit, so that the wiring work of workers is increased, and further, the labor cost is increased; the number of connecting wires is large, so that the material cost of the connecting wires is increased; the wiring time is long, the production period is long, and the production efficiency is reduced; the connecting wires are more, the wiring process is uneven, the requirement of attractiveness can not be met, the attractiveness is further influenced, and importantly, if the connecting wires are more, the height of the pole is not met easily, so that the matching of the pole and the connecting wire between the batteries is caused to cause problems.
Disclosure of Invention
The invention aims to provide a storage battery pack monitoring system, which is used for solving the problem that a plurality of data acquisition lines are required to be arranged between the existing storage battery pack and a monitoring unit. The invention also provides a storage battery pack and a single battery unit
In order to achieve the above purpose, the present invention includes a storage battery monitoring system, which includes a storage battery and a monitoring unit, where the storage battery includes at least two single battery units, each single battery unit includes a single battery body and an information acquisition unit integrated with the corresponding single battery body, the information acquisition unit is used to acquire relevant data information of the corresponding single battery body, the information acquisition unit in each single battery unit is connected to an acquisition bus, and the monitoring unit is connected to the acquisition bus through a communication line to communicate with each information acquisition unit.
In the storage battery monitoring system provided by the invention, each single battery unit comprises two parts, namely a single battery body and an information acquisition unit, wherein the information acquisition unit is integrated with the single battery body and is used for acquiring relevant data information corresponding to the single battery body, namely, an information acquisition part for acquiring the single battery is integrated in the single battery, the relevant data information of each single battery is completed in each single battery and is output to an acquisition bus through a data transmission line after the acquisition is completed, the data information of all the single batteries is transmitted to the acquisition bus, the acquisition bus is also arranged in the storage battery, the monitoring unit is connected with the acquisition bus through a communication line and acquires the data information of each single battery from the acquisition bus, therefore, only the communication line is used for realizing data interaction between the monitoring unit and the storage battery, under the general condition, only two data sending branches and two data receiving branches are arranged on the communication line, so that the number of data acquisition lines between the storage battery pack and the monitoring unit is greatly reduced, the acquisition lines are not required to be output by each single battery unit, and the states of all the single battery units can be monitored by only two communication lines. Therefore, the monitoring system changes the traditional centralized collection form into distributed collection, the information collection work of each single battery unit is independently processed, the problem of attractive routing caused by more connecting wires between the storage battery pack and the monitoring unit is solved, the workload is reduced, and the attractiveness of the connecting wires is realized. Moreover, the problem of insufficient height of the pole caused by multiple pole collecting lines is avoided, the problem of potential electrical safety hazard caused by insufficient height of the pole is further avoided, and matching between the connecting line and the pole is realized; in addition, the operation flow of the connecting line between the storage battery pack and the monitoring unit is simplified, the production efficiency of the storage battery pack is improved, the labor cost and the material cost of the connecting line caused by worker wiring, wiring and process inspection are reduced, a good basis is provided for standardized production, the state of the storage battery pack can be reliably monitored, and the health state of the storage battery pack can be reliably estimated.
In summary, compared with the existing monitoring system, the monitoring system provided by the invention realizes the optimization of the characteristics of distributed acquisition, standardized production, cost reduction, attractive appearance and the like on the basis of completing all functions of the monitoring system, so that the monitoring system has stronger market competitiveness and wider application prospect.
The information acquisition unit comprises a single battery voltage acquisition module, a single battery temperature acquisition module, a single battery internal resistance acquisition module and a corresponding information acquisition circuit.
The information acquisition unit is including being used for connecting the binding post of collection bus, each information acquisition unit's binding post passes through the plug connector with the collection bus and is connected to inserting.
The invention also provides a storage battery pack which comprises at least two single battery units, wherein each single battery unit comprises a single battery body and an information acquisition unit which is integrated with the corresponding single battery body, the information acquisition unit is used for acquiring the relevant data information of the corresponding single battery body, the information acquisition unit in each single battery unit is connected to the acquisition bus, and the information acquisition unit is connected with the acquisition bus through a communication line and can acquire the relevant data information of each single battery body.
The information acquisition unit comprises a single battery voltage acquisition module, a single battery temperature acquisition module, a single battery internal resistance acquisition module and a corresponding information acquisition circuit.
The information acquisition unit is including being used for connecting the binding post of collection bus, each information acquisition unit's binding post passes through the plug connector with the collection bus and is connected to inserting.
The invention also provides a single battery unit, which comprises a single battery body and an information acquisition unit integrated with the corresponding single battery body, wherein the information acquisition unit is used for acquiring the relevant data information of the corresponding single battery body.
The information acquisition unit comprises a single battery voltage acquisition module, a single battery temperature acquisition module, a single battery internal resistance acquisition module and a corresponding information acquisition circuit.
The information acquisition unit comprises a wiring terminal for connecting external related equipment.
Drawings
FIG. 1 is an electrical schematic of a prior art battery pack condition monitoring;
fig. 2 is an electrical schematic diagram of a battery pack monitoring system provided by the present invention.
Detailed Description
Storage battery pack monitoring system embodiment
The present embodiment provides a storage battery pack monitoring system, which includes two parts, i.e. a storage battery pack and a monitoring unit, wherein the monitoring unit implements monitoring of the storage battery pack, such as a BMS. The storage battery pack comprises at least two single battery units, and the specific number is set according to actual needs, such as: the number of the single battery units is specifically set according to the power of the electric equipment.
To arbitrary one battery cell, including battery cell body and information acquisition unit, wherein, the battery cell body is energy storage and energy supply part, and the information acquisition unit is used for gathering the relevant data information of the battery cell body that corresponds to, and the information acquisition unit integrates the design with the battery cell body, and both integrated settings are as a whole production and sell. That is to say, the single battery unit is equivalent to the single battery in the traditional recognition, and only the energy storage and energy supply part exists in the traditional single battery, but the single battery unit provided by the application, namely the inside of the single battery, except the energy storage and energy supply part, also has the information acquisition unit, therefore, the single battery unit breaks the production standard of the traditional single battery, and the information acquisition unit is arranged inside the single battery, and is added inside the single battery when the single battery is produced. For example, an independent space is opened up on the single battery body, and the information acquisition unit is arranged in the independent space to realize integrated arrangement.
The component parts of the information acquisition unit are determined according to the type of data information to be acquired, in the embodiment, the information acquisition unit is used for acquiring the voltage information, the temperature information and the internal resistance information of the single battery body, so that the information acquisition unit comprises a single battery voltage acquisition module, a single battery temperature acquisition module and a single battery internal resistance acquisition module, and certainly, the information acquisition unit also comprises information acquisition circuits corresponding to the acquisition modules. Since the above three types of acquisition modules all belong to the conventional technology, the present embodiment does not describe each acquisition module in detail.
Therefore, when the single battery is produced, each acquisition module and the corresponding information acquisition circuit are integrated inside the single battery, each information acquisition circuit is a connecting circuit inside the single battery unit, and each information acquisition unit is provided with a connecting terminal used for interacting with the outside, such as a connecting terminal used for outputting acquired data or receiving an outside control instruction and the like. Because the information acquisition unit is integrated in the single battery when the single battery is produced, the single battery shell is provided with the connecting terminal except the anode and the cathode, and the shell is not provided with any connecting circuit except the anode, the cathode and the connecting terminal in terms of the appearance of the produced single battery.
The positive and negative electrodes of each unit battery body are connected by a power connection line in a required connection manner (parallel connection or series connection). Moreover, as shown in fig. 2, the storage battery pack further includes an acquisition bus, the connection terminals of the information acquisition units are connected to the acquisition bus, and the monitoring unit is also connected to the acquisition bus through a communication line, so that the monitoring unit can acquire the relevant data information of each single battery body in the acquisition bus through communication with the acquisition bus. Therefore, in addition to the power connection circuit between the individual battery bodies in the battery pack, the connection circuit in the battery pack is only a collection bus, in other words, the connection circuit in the entire monitoring system is only a collection bus and a communication circuit, or the connection circuit between the monitoring unit and the battery pack is only a communication circuit. As shown in fig. 2, in general, the connection terminal includes two ports, i.e., RXD and TXD, so that the connection terminal can be made into a two-pin communication terminal for connecting with the acquisition bus, and the acquisition bus correspondingly includes two branches, one of which is connected to the RXD port of each information acquisition unit and may be referred to as a receiving bus, and the other is connected to the TXD port of each information acquisition unit and may be referred to as a transmitting bus. Correspondingly, the communication line comprises two branches, one communication branch is in communication connection with the receiving bus, and the monitoring unit can issue a corresponding control instruction to the receiving bus through the communication branch; the other communication branch is in communication connection with the sending bus, and the monitoring unit can acquire the collected data information of each single battery body from the sending bus through the communication branch.
In addition, in order to facilitate the connection of each information acquisition unit, the wiring terminal of each information acquisition unit and the acquisition bus can be connected in a plug-in mode through a plug connector. In addition, in order to ensure the accuracy of the data acquired by the information acquisition units, each information acquisition unit can be also provided with a filtering, conditioning and processing circuit, and the acquired data information is transmitted to the acquisition assembly line after being filtered, conditioned and processed.
Therefore, only communication lines are needed between the monitoring unit and the storage battery to realize data transmission, namely, only two communication lines are needed to realize information acquisition of the whole storage battery, compared with the traditional mode that each single battery outputs data acquisition lines to the monitoring unit, namely, compared with the mode that 2 x n voltage acquisition lines, 2 x n or n temperature acquisition lines and n/9 x 2 or n/8 x 2 internal resistance acquisition lines of the battery are needed, the wiring is greatly reduced, and meanwhile, the centralized acquisition is converted into distributed acquisition, the problem of attractive wiring caused by more connecting lines between the storage battery and the monitoring unit is solved, the problem of insufficient pole height caused by more pole acquisition lines is avoided, the problem of electrical safety hidden danger caused by insufficient pole height is also avoided, the production efficiency is improved, and the material cost and the labor cost of the connecting lines and workers are reduced, good basis is provided for standardized production, and the state monitoring of the storage battery can be realized, so that the health state of the storage battery can be estimated.
In addition, the storage battery pack monitoring system provided by the embodiment can realize standardized production, the storage battery pack is directly formed by the single batteries through the connecting wires among the batteries, the state information of the single batteries is sent to the monitoring unit in a communication mode, the operation flow of the direct connecting wires of the single batteries is simplified, and the production efficiency is improved. Several combined units are arranged in one row in the screen body, and several rows are arranged in one screen body in total, so that the total number of feed branches of one feed screen can be determined. According to the number of the feeding branches, a row is defined as a unit which can be assembled, and a dummy panel can be installed at the redundant feeding position, so that the standardized production can be realized.
The specific embodiments are given above, but the present invention is not limited to the described embodiments. The basic idea of the present invention lies in the above basic scheme, and it is obvious to those skilled in the art that no creative effort is needed to design various modified models, formulas and parameters according to the teaching of the present invention. Variations, modifications, substitutions and alterations may be made to the embodiments without departing from the principles and spirit of the invention, and still fall within the scope of the invention.
Storage battery pack embodiment
This embodiment provides a battery pack that, although part of the battery pack monitoring system, can be manufactured, sold and protected separately, and will not be described in detail since the battery pack has been described in detail in the above monitoring system embodiments.
Single cell embodiment
The present embodiment provides a unit cell which belongs to a constituent element of a battery pack and can be separately manufactured, sold and protected, and since the unit cell is described in detail in the above-described embodiment of the monitoring system, the present embodiment will not be described in detail.
Claims (2)
1. A storage battery monitoring system comprises a storage battery and a monitoring unit, wherein the storage battery comprises at least two single battery units, and the storage battery monitoring system is characterized in that each single battery unit comprises a single battery body and an information acquisition unit which is integrated with the corresponding single battery body, the information acquisition unit is used for acquiring relevant data information of the corresponding single battery body, the information acquisition unit in each single battery unit is connected to an acquisition bus, and the monitoring unit is connected with the acquisition bus through a communication line so as to realize communication with each information acquisition unit; the information acquisition unit is integrated in the single battery body, an independent space is opened on the single battery body, and the information acquisition unit is arranged in the independent space;
the information acquisition unit comprises a single battery voltage acquisition module, a single battery temperature acquisition module, a single battery internal resistance acquisition module and a corresponding information acquisition circuit;
the information acquisition units comprise wiring terminals for connecting the acquisition bus, and the wiring terminals of the information acquisition units are in plug-in connection with the acquisition bus through plug connectors;
the wiring terminal comprises two ports, namely RXD and TXD, which are used for being connected with an acquisition bus, the acquisition bus comprises two branches, one branch is connected with the RXD port of each information acquisition unit and used as a receiving bus, and the other branch is connected with the TXD port of each information acquisition unit and used as a sending bus; two communication branches are correspondingly connected between the monitoring unit and the acquisition bus, one communication branch is in communication connection with the receiving bus, the other communication branch is in communication connection with the sending bus, and the monitoring unit acquires the acquired data information of each single battery body from the sending bus through the two communication branches;
the collection modules in the information collection unit and the corresponding information collection circuits are integrated inside the single battery, and the information collection circuits are connecting circuits inside the single battery units.
2. A storage battery pack comprises at least two single battery units, wherein the monitoring unit monitors the storage battery pack, and is characterized in that each single battery unit comprises a single battery body and an information acquisition unit which is integrated with the corresponding single battery body, the information acquisition unit is used for acquiring relevant data information of the corresponding single battery body, the information acquisition unit in each single battery unit is connected to an acquisition bus, and the information acquisition unit is connected with the acquisition bus through a communication line and can acquire the relevant data information of each single battery body; the information acquisition unit is integrated in the single battery body, an independent space is opened on the single battery body, and the information acquisition unit is arranged in the independent space;
the information acquisition unit comprises a single battery voltage acquisition module, a single battery temperature acquisition module, a single battery internal resistance acquisition module and a corresponding information acquisition circuit;
the information acquisition units comprise wiring terminals for connecting the acquisition bus, and the wiring terminals of the information acquisition units are in plug-in connection with the acquisition bus through plug connectors;
the wiring terminal comprises two ports, namely RXD and TXD, which are used for being connected with an acquisition bus, the acquisition bus comprises two branches, one branch is connected with the RXD port of each information acquisition unit and used as a receiving bus, and the other branch is connected with the TXD port of each information acquisition unit and used as a sending bus; two communication branches are correspondingly connected between the monitoring unit and the acquisition bus, one communication branch is in communication connection with the receiving bus, the other communication branch is in communication connection with the sending bus, and the monitoring unit acquires the acquired data information of each single battery body from the sending bus through the two communication branches;
the collection modules in the information collection unit and the corresponding information collection circuits are integrated inside the single battery, and the information collection circuits are connecting circuits inside the single battery units.
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| CN202025074U (en) * | 2011-02-25 | 2011-11-02 | 张贵民 | Online detection and maintenance device for storage battery |
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| CN101420036A (en) * | 2007-10-22 | 2009-04-29 | 深圳迈瑞生物医疗电子股份有限公司 | Power supply management device and method for battery |
| WO2013035183A1 (en) * | 2011-09-08 | 2013-03-14 | 日立ビークルエナジー株式会社 | Battery system monitoring device |
| CN102324589B (en) * | 2011-09-09 | 2013-09-11 | 宋杰 | Intelligent sealed valve control lead-acid storage battery with embedded parameter sensor |
| CN104617633B (en) * | 2015-02-24 | 2017-01-25 | 刘光辰 | Intelligent battery, electricity transfer bus system and balanced charging and discharging method |
| CN105044604A (en) * | 2015-06-26 | 2015-11-11 | 国网上海市电力公司 | Storage battery pack online monitoring system and monitoring method thereof |
| CN105098910A (en) * | 2015-08-11 | 2015-11-25 | 郑永春 | Intelligent lithium battery and distributed management system thereof |
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