CN113764750A - High-temperature superconducting energy storage monitoring system - Google Patents
High-temperature superconducting energy storage monitoring system Download PDFInfo
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- CN113764750A CN113764750A CN202111045560.5A CN202111045560A CN113764750A CN 113764750 A CN113764750 A CN 113764750A CN 202111045560 A CN202111045560 A CN 202111045560A CN 113764750 A CN113764750 A CN 113764750A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
- H01F6/06—Coils, e.g. winding, insulating, terminating or casing arrangements therefor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4285—Testing apparatus
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention relates to a high-temperature superconducting energy storage monitoring system. The device comprises a superconducting energy storage battery, a current detection module, a voltage detection module and a main control module; the superconducting energy storage battery is respectively and electrically connected with a vehicle power battery and a vehicle driving motor; the current detection module and the voltage detection module are respectively and electrically connected with the superconducting energy storage battery and are respectively used for detecting the output voltage and the output current of the superconducting energy storage battery; the main control module is respectively connected with the current detection module and the voltage detection module and is used for acquiring and processing the output voltage and the output current and displaying the voltage value and the current value. According to the high-temperature superconducting energy storage monitoring system, the current detection module and the voltage detection module are installed on the superconducting energy storage battery and are used for detecting signals such as current and voltage of the superconducting energy storage battery in real time, so that the state of the superconducting energy storage battery can be regulated and controlled in time, and the stability and the reliability of the superconducting energy storage battery are improved.
Description
Technical Field
The invention relates to the technical field of energy storage, in particular to a high-temperature superconducting energy storage monitoring system.
Background
With the rapid development of electric transportation vehicles such as electric automobiles and the like, electrochemical batteries such as lithium ion batteries become the fastest development at present and are also the most widely used energy storage mode. Transportation systems typically require high energy type energy storage devices to achieve long duration by discharging for long periods of time, thereby maximizing system efficiency and minimizing system cost and quality.
In the starting or accelerating stage of the electric automobile, the power battery needs to be rapidly discharged so as to provide enough power. However, due to the limitations of the structure and performance of the conventional power battery, the discharging speed is slow, and sufficient electric energy cannot be released in a short time, so that the electric vehicle is slow to start, and the starting speed requirement of the electric vehicle is difficult to meet. Meanwhile, in the starting or accelerating stage of the electric automobile, the limit discharge of the power battery can impact the battery, so that the performance of the power battery is reduced in an accelerating manner. In addition, the battery consumes more electric energy in the starting or accelerating stage, so that the cruising ability is shortened, more frequent charging is required, and the life cycle of the battery is seriously influenced.
In addition, conventional electric vehicles lack real-time monitoring of power source data.
Disclosure of Invention
Therefore, the high-temperature superconducting energy storage monitoring system capable of releasing large electric energy in a short time, relieving the influence of the limit discharge impact on the power battery, reducing the charge-discharge frequency of the power battery and monitoring the power source data in real time is provided for solving the problems that the performance of the power battery is reduced in an accelerated manner due to the limit discharge impact, the life cycle of the battery is influenced by frequent charge and discharge, and the traditional electric vehicle is lack of the real-time monitoring of the power source data.
A high-temperature superconducting energy storage monitoring system comprises a superconducting energy storage battery, a current detection module, a voltage detection module and a main control module;
the superconducting energy storage battery is respectively and electrically connected with a vehicle power battery and a vehicle driving motor; the current detection module and the voltage detection module are respectively and electrically connected with the superconducting energy storage battery and are respectively used for detecting the output voltage and the output current of the superconducting energy storage battery; the main control module is respectively connected with the current detection module and the voltage detection module and used for acquiring and processing the output voltage and the output current, displaying a voltage value and a current value and controlling and starting the quench protection of the superconducting energy storage battery when the voltage value and the current value exceed a set threshold value.
Further, the superconducting energy storage battery comprises a plurality of superconducting battery cells which are connected in series; the current detection module is respectively connected with the output circuits of the single superconducting batteries in series and is used for detecting the output current of each superconducting battery; the voltage detection module is respectively connected with the anode and the cathode of each superconducting battery monomer in parallel and is used for detecting the output voltage of each superconducting battery monomer.
Furthermore, a plurality of the single superconducting battery bodies are connected in series to form a superconducting battery module, the superconducting energy storage battery comprises a plurality of superconducting battery modules, and the superconducting battery modules are connected in parallel.
Furthermore, the superconducting battery cell comprises a shell, liquid nitrogen, an iron core and a superconducting coil, wherein the iron core is arranged in the shell, the superconducting coil is wound on the iron core, the positive electrode and the negative electrode of the superconducting coil are connected to the outer side of the shell in a leading-in mode, and the liquid nitrogen is filled in the shell.
Further, the inside of casing is insulation construction, insulation construction is the dewar.
Furthermore, a liquid nitrogen inlet and a liquid nitrogen outlet are respectively arranged on the shell, and the liquid nitrogen inlet and the liquid nitrogen outlet are communicated with the inside of the shell.
Furthermore, the control system further comprises a temperature detection module, wherein the temperature detection module is electrically connected with the superconducting energy storage battery and is used for detecting the external environment temperature and the internal liquid nitrogen temperature of the superconducting energy storage battery; the main control module obtains the external environment temperature and the internal liquid nitrogen temperature, displays the external environment temperature value and the internal liquid nitrogen temperature value, sends out an alarm signal when the external environment temperature value is higher than a set environment temperature threshold value, and controls the starting of the quench protection of the superconducting energy storage battery when the internal liquid nitrogen temperature value is higher than the set liquid nitrogen temperature threshold value.
Further, the main control module comprises a transmitter and an industrial personal computer; the current detection module, the voltage detection module and the temperature detection module are connected with the industrial personal computer through the transmitter.
Furthermore, an upper computer program LabVIEW is loaded in the industrial personal computer and is used for data processing, data display and data storage.
Further, the upper limit of the liquid nitrogen temperature threshold is 92K.
According to the high-temperature superconducting energy storage monitoring system, the superconducting energy storage battery is added into a power source system of the electric automobile and used for supplying power in the starting or accelerating stage of the electric automobile, and the superconducting energy storage battery has no resistance in a superconducting state, so that the power consumption is low, the efficiency is high, and when the power is supplied, enough electric energy can be released in a short time, so that the electric automobile obtains enough power in the starting or accelerating stage, and the time of the starting or accelerating stage of the electric automobile is shortened. Meanwhile, the limit discharge impact and frequent charge and discharge of the power battery are avoided, the negative influence on the performance of the battery is avoided, and the service cycle of the power battery is prolonged. In addition, the current detection module and the voltage detection module are arranged on the superconducting energy storage battery and used for detecting signals such as current and voltage of the superconducting energy storage battery in real time, so that the state of the superconducting energy storage battery can be regulated and controlled in time, and the stability and the reliability of the superconducting energy storage battery are improved.
Drawings
Fig. 1 is a schematic structural view of a superconducting energy storage battery;
FIG. 2 is a schematic diagram of a monitoring system;
fig. 3 is a schematic view of the structure of the superconducting battery cell.
In the figure: 100. a superconducting energy storage battery; 110. a superconducting battery cell; 111. a housing; 112. an iron core; 113. a superconducting coil; 114. a Dewar; 200. a current detection module; 300. a voltage detection module; 400. a temperature detection module; 500. and a main control module.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and fig. 2, in one embodiment, a high temperature superconducting energy storage monitoring system includes a superconducting energy storage battery 100, a current detection module 200, a voltage detection module 300, and a main control module 500;
the superconducting energy storage battery 100 is respectively and electrically connected with a vehicle power battery and a vehicle driving motor; the current detection module 200 and the voltage detection module 300 are respectively electrically connected to the superconducting energy storage battery 100 and are respectively used for detecting the output voltage and the output current of the superconducting energy storage battery 100; the main control module 500 is connected to the current detection module 200 and the voltage detection module 300, respectively, and is configured to obtain and process the output voltage and the output current, display a voltage value and a current value, and control to start the quench protection of the superconducting energy storage battery 100 when the voltage value and the current value exceed a set threshold.
The quenching refers to a phenomenon that a wound strip of the superconducting magnet is restored from a superconducting state to a resistance state under certain conditions. This is mainly due to the fact that some operating parameters of the superconducting magnet exceed the critical parameter range of the magnet, and the partial superconducting tapes in the magnet windings return to the normal state to cause the quench of the global magnet. The critical parameter ranges mentioned here also refer mainly to the critical current, the critical magnetic field and the critical temperature mentioned above. The quench protection is an important guarantee for ensuring the safety and stability of the superconducting battery.
According to the high-temperature superconducting energy storage monitoring system, the superconducting energy storage battery 100 is added into a power source system of the electric automobile and used for supplying power in the starting or accelerating stage of the electric automobile, and the superconducting energy storage battery 100 has the advantages that in the superconducting state, a coil has no resistance, the energy consumption is low, the efficiency is high, and enough electric energy can be released in a short time during power supply, so that the electric automobile obtains enough power in the starting or accelerating stage, and the time of the starting or accelerating stage of the electric automobile is shortened. Meanwhile, the limit discharge impact and frequent charge and discharge of the power battery are avoided, the negative influence on the performance of the battery is avoided, and the service cycle of the power battery is prolonged. In addition, the current detection module 200 and the voltage detection module 300 are installed on the superconducting energy storage battery 100 and used for detecting signals such as current and voltage of the superconducting energy storage battery 100 in real time, so that the state of the superconducting energy storage battery 100 can be regulated and controlled in time, and the stability and reliability of the superconducting energy storage battery 100 are improved.
In the present embodiment, the superconducting energy storage battery 100 is electrically connected to the DC/AC converter through one DC/DC converter to drive the motor, and the vehicle power battery is electrically connected to the DC/AC converter through another DC/DC converter to drive the motor.
In this example, the superconducting energy storage battery 100 includes a plurality of superconducting battery cells 110, the plurality of superconducting battery cells 110 being connected in series; the current detection module 200 is respectively connected in series with the output circuits of the individual superconducting batteries 110, and is configured to detect the output currents of the individual superconducting batteries 110; the voltage detection module 300 is connected in parallel to the positive and negative electrodes of each superconducting battery cell 110, respectively, and is configured to detect the output voltage of each superconducting battery cell 110.
In this embodiment, a plurality of superconducting battery cells 110 are connected in series to form a superconducting battery module, and the superconducting energy storage battery 100 includes a plurality of superconducting battery modules, which are connected in parallel.
According to the superconducting energy storage battery 100, the superconducting energy storage batteries 100 with different voltages, different energy storages and different powers are formed by combining the plurality of superconducting battery monomers 110, so that the energy and power of energy storage can be adjusted, the battery does not need to be subjected to frequent charging and discharging, the motor is started, the motor is accelerated and the like, the service life of a power battery is prolonged, and the charging and discharging power of an electric vehicle is improved.
The modular superconducting battery cell 110 has working states such as charging, discharging, and standby, and whether these state parameters are in the threshold range will directly affect the stability and reliability of the modular superconducting battery cell 110. The main function of the monitoring system is real-time online monitoring of the state parameters of the single superconducting battery 110, such as the exciting current, the battery voltage, the internal temperature of the battery, the external temperature of the battery, and the like, in different states, and provides necessary display and control functions for safe, stable and reliable operation of the single modular superconducting battery 110.
The superconducting energy storage battery 100 stores certain energy through each modularized superconducting battery monomer 110, can release the energy stored by large power, can form higher battery voltage and larger energy storage power through array combination, and forms energy combination with a main energy storage battery of an electric automobile through a DC/DC conversion model, and finally drives an alternating current motor of the electric automobile through DC/AC conversion, so that the output power of the electric automobile can be improved, the acceleration time of the electric automobile is shortened, and riding experience is good.
The monitoring system can flexibly adjust the configuration of the sensors and the adjustment of the online monitoring display system according to the configuration number of the modular super-conductive cells through the modular functional design. And current detection, voltage detection and temperature detection are all monitored by adopting sensors, so that the cost is low, the installation is convenient, and the integration level is high.
As shown in fig. 3, in the present embodiment, the superconducting battery cell 110 includes a case 111, liquid nitrogen, an iron core 112 and a superconducting coil 113, the iron core 112 is disposed in the case 111, the superconducting coil 113 is wound around the iron core 112, the positive and negative poles of the superconducting coil 113 are connected to the outside of the case 111, and the case 111 is filled with the liquid nitrogen. The inner side of the shell 111 is a heat preservation structure, and the heat preservation structure is a Dewar 114. And a liquid nitrogen inlet and a liquid nitrogen outlet are respectively formed in the shell 111 and are communicated with the inside of the shell 111.
Compared with the conventional high-temperature superconducting magnet, the superconducting battery monomer 110 is much smaller, and through the modularized and array-type free combination, the interface and the size of the superconducting battery monomer support modularization, and the superconducting battery array with different specifications and different energy storage energies is formed through flexible combination. Meanwhile, liquid nitrogen can be circulated in the cooling device for cooling, and the cost is low.
In this embodiment, the control system further includes a temperature detection module 400, where the temperature detection module 400 is electrically connected to the superconducting energy storage battery 100 and is configured to detect an external environment temperature and an internal liquid nitrogen temperature of the superconducting energy storage battery 100; the main control module 500 obtains the external environment temperature and the internal liquid nitrogen temperature, displays the external environment temperature value and the internal liquid nitrogen temperature value, sends out an alarm signal when the external environment temperature value is higher than a set environment temperature threshold value, and controls to start the quench protection of the superconducting energy storage battery 100 when the internal liquid nitrogen temperature value is higher than the set liquid nitrogen temperature threshold value.
In this embodiment, the main control module 500 includes a transmitter and an industrial personal computer; the current detection module 200, the voltage detection module 300 and the temperature detection module 400 are connected with an industrial personal computer through a transmitter. And an upper computer program LabVIEW is loaded in the industrial personal computer and is used for data processing, data display and data storage.
When the modular superconducting battery is used, the modular superconducting battery is connected with a lithium battery circuit through DC/DC, the size of the exciting current of the modular superconducting battery monomer 110 is monitored on line through the current detection module 200, and the current states such as the threshold value of the exciting current, the current lifting rate and the like are monitored and controlled. The voltage detection module 300 monitors the voltages at two ends of the single superconducting battery 110 during operation, and if the voltage exceeds the working voltage threshold, the quench protection of the superconducting energy storage battery 100 is started. The real-time monitoring of the internal liquid nitrogen temperature of the superconducting battery and the real-time monitoring of the external environment temperature of the battery are realized through liquid nitrogen temperature detection and external temperature detection. The upper limit of the internal liquid nitrogen temperature threshold is 92K. When the temperature of the internal liquid nitrogen exceeds the upper threshold, the quench protection of the superconducting battery monomer 110 is started. And the external temperature detection is mainly used for monitoring the external ambient temperature of the battery in real time, and when the ambient temperature is higher than a threshold range, the system provides temperature alarm. Real-time monitoring signals such as current, voltage, temperature and the like are connected to the industrial personal computer through the transmitter, and display and corresponding functions such as data processing, data storage and the like are realized through an upper computer program LabVIEW.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A high-temperature superconducting energy storage monitoring system is characterized by comprising a superconducting energy storage battery, a current detection module, a voltage detection module and a main control module;
the superconducting energy storage battery is respectively and electrically connected with a vehicle power battery and a vehicle driving motor; the current detection module and the voltage detection module are respectively and electrically connected with the superconducting energy storage battery and are respectively used for detecting the output voltage and the output current of the superconducting energy storage battery; the main control module is respectively connected with the current detection module and the voltage detection module and used for acquiring and processing the output voltage and the output current, displaying a voltage value and a current value and controlling and starting the quench protection of the superconducting energy storage battery when the voltage value and the current value exceed a set threshold value.
2. A high temperature superconducting energy storage monitoring system according to claim 1, wherein the superconducting energy storage battery comprises a plurality of superconducting cells connected in series; the current detection module is respectively connected with the output circuits of the single superconducting batteries in series and is used for detecting the output current of each superconducting battery; the voltage detection module is respectively connected with the anode and the cathode of each superconducting battery monomer in parallel and is used for detecting the output voltage of each superconducting battery monomer.
3. The system according to claim 1, wherein a plurality of the superconducting cell units are connected in series to form a superconducting cell module, and the superconducting energy storage battery comprises a plurality of superconducting cell modules, and the plurality of superconducting cell modules are connected in parallel.
4. The system according to claim 1, wherein the superconducting battery cell comprises a housing, liquid nitrogen, a core and a superconducting coil, the core is disposed in the housing, the superconducting coil is wound around the core, and the positive and negative poles of the superconducting coil are connected to the outside of the housing, and the liquid nitrogen is filled in the housing.
5. The hts energy storage monitoring system of claim 4 where the inside of the housing is a thermal insulation structure, the thermal insulation structure being a dewar.
6. The high-temperature superconducting energy storage monitoring system according to claim 4, wherein the shell is provided with a liquid nitrogen inlet and a liquid nitrogen outlet, and the liquid nitrogen inlet and the liquid nitrogen outlet are both communicated with the inside of the shell.
7. The system according to claim 4, wherein the control system further comprises a temperature detection module electrically connected to the superconducting energy storage battery for detecting an external ambient temperature and an internal liquid nitrogen temperature of the superconducting energy storage battery; the main control module obtains the external environment temperature and the internal liquid nitrogen temperature, displays the external environment temperature value and the internal liquid nitrogen temperature value, sends out an alarm signal when the external environment temperature value is higher than a set environment temperature threshold value, and controls the starting of the quench protection of the superconducting energy storage battery when the internal liquid nitrogen temperature value is higher than the set liquid nitrogen temperature threshold value.
8. The high temperature superconducting energy storage monitoring system according to claim 7, wherein the master control module comprises a transmitter and an industrial personal computer; the current detection module, the voltage detection module and the temperature detection module are connected with the industrial personal computer through the transmitter.
9. The high-temperature superconducting energy storage monitoring system according to claim 8, wherein the industrial personal computer is loaded with an upper computer program LabVIEW for data processing, data display and data storage.
10. The HTS monitoring system of claim 7, wherein said upper liquid nitrogen temperature threshold is 92K.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11262200A (en) * | 1998-03-13 | 1999-09-24 | Toshiba Corp | Superconducting power storage equipment |
| US20090046399A1 (en) * | 2005-04-19 | 2009-02-19 | Kabushiki Kaisha Toshiba | Superconducting coil quench detection method and device, and superconducting power storage unit |
| CN102222935A (en) * | 2011-06-15 | 2011-10-19 | 中国电力科学研究院 | Grid-connected full digital monitoring system for controllable high-temperature superconducting magnetic energy storage (SMES) system |
| CN110246655A (en) * | 2019-07-25 | 2019-09-17 | 广东电网有限责任公司 | A kind of HTS-SMES magnet |
-
2021
- 2021-09-07 CN CN202111045560.5A patent/CN113764750A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11262200A (en) * | 1998-03-13 | 1999-09-24 | Toshiba Corp | Superconducting power storage equipment |
| US20090046399A1 (en) * | 2005-04-19 | 2009-02-19 | Kabushiki Kaisha Toshiba | Superconducting coil quench detection method and device, and superconducting power storage unit |
| JP4929165B2 (en) * | 2005-04-19 | 2012-05-09 | 株式会社東芝 | Method and apparatus for detecting quench of superconducting coil and superconducting power storage device |
| CN102222935A (en) * | 2011-06-15 | 2011-10-19 | 中国电力科学研究院 | Grid-connected full digital monitoring system for controllable high-temperature superconducting magnetic energy storage (SMES) system |
| CN110246655A (en) * | 2019-07-25 | 2019-09-17 | 广东电网有限责任公司 | A kind of HTS-SMES magnet |
Non-Patent Citations (1)
| Title |
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| QIANG SUN: "Optimized State of Charge Estimation of Lithium-Ion Battery in SMES/Battery Hybrid Energy Storage System for Electric Vehicles", IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, vol. 31, no. 8, pages 1 - 6, XP011866356, DOI: 10.1109/TASC.2021.3091119 * |
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