CN114325391A - City rail vehicle storage battery on-line monitoring device - Google Patents
City rail vehicle storage battery on-line monitoring device Download PDFInfo
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- CN114325391A CN114325391A CN202111542345.6A CN202111542345A CN114325391A CN 114325391 A CN114325391 A CN 114325391A CN 202111542345 A CN202111542345 A CN 202111542345A CN 114325391 A CN114325391 A CN 114325391A
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Abstract
The invention discloses an on-line monitoring device for an urban rail vehicle storage battery pack, which comprises a circuit frame, a plurality of assembly joint components and a main control unit, wherein the circuit frame is covered on a storage battery cabinet, each assembly joint component comprises a positive electrode pressing joint, a negative electrode pressing joint and a temperature sensor, and the positive electrode pressing joint and the negative electrode pressing joint are respectively connected with the positive electrode and the negative electrode of the storage battery and are used for collecting the voltage and the internal resistance of the storage battery; the temperature sensor is used for measuring the temperature of the cathode of the storage battery in a contact mode; and the information collected by the positive electrode pressing joint, the negative electrode pressing joint and the temperature sensor is transmitted to the main control unit. The invention has the advantages of compact structure, convenient assembly and disassembly, capability of realizing real-time automatic acquisition of battery working condition data and the like.
Description
Technical Field
The invention mainly relates to the technical field of rail transit, in particular to an on-line monitoring device for an urban rail vehicle storage battery pack.
Background
The storage battery pack is used as one of key components of the auxiliary power supply system of the rail transit equipment, the working characteristics of the storage battery pack are limited by a plurality of factors such as working temperature, humidity and aging state, and the quality of the operation and maintenance quality of the storage battery pack is directly related to the safe operation of vehicles. Due to the inherent chemical characteristics, the storage battery pack has the problems of capacity reduction, voltage unbalance, temperature abnormity and the like in the using process, so that operation and maintenance personnel need to maintain the storage battery pack regularly. However, in the operation and maintenance process of the existing storage battery pack, the problems of inadequate maintenance, poor pertinence, lack of maintenance means and the like generally exist, the quality of the storage battery pack is damaged and the service life is reduced if the storage battery pack is light, the requirement of backup power supply cannot be met, and accidents such as explosion, fire and the like occur if the storage battery pack is heavy.
At present, the existing storage battery monitoring devices are commonly used on new energy vehicles, most storage battery monitoring devices for urban rail vehicles can only monitor the terminal voltage and current of a battery pack, and manual inspection is still required to be performed regularly in order to solve the overall health state of the storage battery.
Because the manual inspection has certain interval time, when the battery pack breaks down in the interval period, the battery pack cannot be effectively reminded and transmitted to operation and maintenance personnel, and the faults cannot be timely found and eliminated, so that the hidden danger is caused.
In addition, because the monomer battery of urban rail vehicle often establishes ties and uses in groups, the monomer battery will lead to the unable normal work of whole group battery unusually, and current storage battery monitoring devices do not carry out effective monitoring to the monomer battery state mostly for it is difficult to the location problem battery piece to overhaul the in-process, leads to troubleshooting inefficiency, and it is inconvenient to waste time and energy to accompany the maintenance.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the technical problems in the prior art, the invention provides the on-line monitoring device for the storage battery pack of the urban rail vehicle, which has the advantages of compact structure, convenience in disassembly and assembly and capability of realizing real-time automatic acquisition of the working condition data of the battery.
In order to solve the technical problems, the invention adopts the following technical scheme:
an on-line monitoring device for an urban rail vehicle storage battery pack comprises a circuit frame, a plurality of assembly joint assemblies and a main control unit, wherein the circuit frame is covered on a storage battery cabinet, each assembly joint assembly comprises a positive electrode pressing joint, a negative electrode pressing joint and a temperature sensor, and the positive electrode pressing joint and the negative electrode pressing joint are respectively connected with the positive electrode and the negative electrode of the storage battery and are used for collecting the voltage and the internal resistance of the storage battery; the temperature sensor is used for measuring the temperature of the cathode of the storage battery in a contact mode; and the information collected by the positive electrode pressing joint, the negative electrode pressing joint and the temperature sensor is transmitted to the main control unit.
As a further improvement of the invention: the circuit frame is an H-shaped framework, and the main control unit is installed in the middle of the circuit frame in a dismounting mode.
As a further improvement of the invention: the circuit frame comprises an upper module and a lower module which are connected in a buckling mode.
As a further improvement of the invention: the upper module and the lower module of the circuit frame are symmetrically provided with a plurality of pairs of cylindrical bosses, the cylindrical bosses of the lower module are provided with internal thread holes, and the cylindrical bosses of the upper module corresponding to the internal thread holes are provided with circular through holes; the upper module and the lower module are fixedly connected into a whole through each pair of cylindrical bosses through screws.
As a further improvement of the invention: the upper module and the lower module of the line frame are symmetrically provided with a plurality of pairs of semicircular line pipe pressure ports, the semicircular line pipe pressure ports of the upper module and the lower module are correspondingly combined into a plurality of circular line pipe pressure ports, and the pressure grooves at the end parts of a plurality of line pipes are clamped in the line frame through the circular line pipe pressure ports to realize the assembly connection of the line pipes and the line frame.
As a further improvement of the invention: the cable is led out of the wire tube, one end of the cable is connected with the main control unit, and the other end of the cable is connected with the positive electrode pressing connector, the negative electrode pressing connector and the temperature sensor respectively.
As a further improvement of the invention: four pairs of cylindrical bosses are symmetrically designed on four opposite angles of the upper module and the lower module of the circuit frame, through holes are formed in the cylindrical bosses, and the circuit frame is fixedly connected with the mounting support plate through the through holes by using connecting pieces.
As a further improvement of the invention: the mounting support plate is of a U-shaped structure, the end face of the mounting support plate is welded with the cabinet body of the storage battery pack, and the circuit frame is fixedly connected to the mounting support plate through the through hole and the through hole by using a connecting piece.
As a further improvement of the invention: the circuit frame is provided with at least one first boss, and the main control unit is provided with a second boss which is matched with the first boss; the circuit frame is connected with the main control unit in an assembling mode through the first boss and the second boss.
As a further improvement of the invention: and the positive electrode crimping head and the negative electrode crimping head in each group of the joint assembly are copper sheets of U-shaped structures, and the temperature sensor is attached to and wrapped by the negative electrode crimping heads.
As a further improvement of the invention: and a plurality of wiring holes are reserved at two ends of the main control unit and are used for synchronously supporting independent monitoring of the voltage, the internal resistance and the temperature of the single storage battery.
As a further improvement of the invention: the main control unit is provided with a plurality of status indicator lamps, and each status indicator lamp corresponds to each detected single storage battery respectively.
As a further improvement of the invention: the main control unit comprises an attenuation isolation network, an analog switch matrix, a variable gain amplifier, a digital-to-analog conversion unit, a processor, an EEPROM, a CAN bus communication module and a battery management module; the main control unit acquires the voltage of each single storage battery in real time, processes the voltage difference data to obtain the voltage difference data between the storage batteries, and positions the failed single storage battery through analysis.
Compared with the prior art, the invention has the advantages that:
1. the on-line monitoring device for the storage battery pack of the urban rail vehicle is suitable for the on-line monitoring device for the storage battery pack of the urban rail vehicle, realizes the real-time automatic acquisition of the working condition data of the battery, comprises the functions of monitoring the voltage, the internal resistance and the temperature of the storage battery pack and the single battery and diagnosing faults, and is the key point of the maintenance work of the storage battery pack of the urban rail vehicle and the key point of ensuring the stable operation of a train.
2. The invention discloses an on-line monitoring device for an urban rail vehicle storage battery pack, which is an on-line monitoring device with real-time data, comprehensive monitoring and fault diagnosis functions, and is used for scientifically and effectively discovering and solving hidden dangers in the urban rail vehicle storage battery system and improving the safety and the maintenance efficiency of the storage battery pack.
3. The online monitoring device for the storage battery pack of the urban rail vehicle has a shape similar to a cover plate buckled on a storage battery cabinet, is compact in structure and convenient to assemble and disassemble, and is internally integrated with a sensor, an electrical connecting piece, a signal attenuation isolating device, a main control unit and other parts. The main control unit CAN acquire working condition data of the storage battery through the sensor and the electric connecting piece, is responsible for processing, analyzing and storing the data, provides a wireless transmission and CAN bus communication interface for the outside and CAN realize real-time landing and getting on the bus of the monitored data. The monitoring device can be adapted to mechanical and electrical interfaces of the existing urban rail vehicle storage battery cabinet, can realize online monitoring and fault diagnosis of the voltage, internal resistance and temperature of the storage battery pack and the single battery, and is particularly suitable for online monitoring of the urban rail vehicle storage battery pack.
Drawings
Fig. 1 is a schematic perspective view of an embodiment of the present invention.
Fig. 2 is a schematic diagram of the front view structure of the present invention in a specific application example.
Fig. 3 is a schematic diagram of the structure principle of the line frame in the specific application example of the invention.
Fig. 4 is a schematic structural diagram of a module under a circuit frame in a specific application example of the invention.
Fig. 5 is an enlarged schematic view of a structure at a in fig. 4.
Fig. 6 is a schematic diagram of the structure of the joint assembly in a specific application example of the invention.
Fig. 7 is a schematic structural principle diagram of the main control unit in an application example of the present invention.
Fig. 8 is a schematic diagram of a structural principle of a main control unit in a specific application example of the present invention.
Fig. 9 is a schematic diagram of the structure of the mounting plate in a specific application example of the invention.
Fig. 10 is a schematic view of the assembly structure of the present invention and a storage battery cabinet in a specific application example.
Fig. 11 is an electrical schematic diagram of a main control unit in a specific application example of the present invention.
Illustration of the drawings:
1. a line frame; 2. a positive electrode pressure joint; 3. a negative electrode pressure joint; 4. a temperature sensor; 5. a cable; 6. a conduit; 7. an elastic tube; 8. a main control unit; 9. mounting a supporting plate; 101. a cylindrical boss; 102. a semicircular line pipe pressure port; 103. an aperture; 104. a first boss; 105. a through hole; 601. pressing a groove; 801. a wiring hole; 802. a second boss; 803. a status indicator light; 901. an end face; 902. and a through hole.
Detailed Description
The invention will be described in further detail below with reference to the drawings and specific examples.
As shown in fig. 1-11, the on-line monitoring device for the urban rail vehicle storage battery pack comprises a circuit frame 1, a plurality of assembly joint components and a main control unit 8, wherein the circuit frame 1 is covered on a storage battery cabinet to form a cover plate buckled on the storage battery cabinet; each group of the joint component comprises a positive electrode pressing joint 2, a negative electrode pressing joint 3 and a temperature sensor 4, wherein the positive electrode pressing joint 2 and the negative electrode pressing joint 3 are respectively connected with the positive electrode and the negative electrode of the storage battery and used for collecting the voltage and the internal resistance of the storage battery. The temperature sensor 4 is used for measuring the temperature of the cathode of the storage battery in a contact mode. And the information collected by the positive electrode pressing joint 2, the negative electrode pressing joint 3 and the temperature sensor 4 is transmitted to the main control unit 8.
The device comprises a circuit frame 1, a positive electrode pressing joint 2, a negative electrode pressing joint 3, a temperature sensor 4, a cable 5, a line pipe 6, an elastic pipe 7, a main control unit 8 and an installation supporting plate 9;
in a specific application example, the circuit frame 1 is made into an H-shaped framework by adopting a sheet metal structure, is hollow and is divided into an upper module and a lower module, namely the upper module and the lower module.
In a specific application example, a plurality of pairs of cylindrical bosses 101 are symmetrically designed on both the upper module and the lower module of the circuit frame 1, an internal thread hole is formed in the cylindrical boss 101 of the lower module, and a circular through hole is formed in the cylindrical boss 101 of the upper module corresponding to the internal thread hole; the upper module and the lower module are fixedly connected into a whole through each pair of cylindrical bosses 101 through screws.
In a specific application example, the upper module and the lower module of the line frame 1 are symmetrically designed with a plurality of pairs of semicircular line pipe pressure ports 102, the semicircular line pipe pressure ports 102 of the upper module and the lower module can be correspondingly combined into a plurality of circular line pipe pressure ports (e.g. 40 in this example), and the pressure grooves 601 at the end portions of a plurality of line pipes 6 (e.g. 40 in this example) can be clamped in the line frame 1 through each circular line pipe pressure port, so that the line pipes 6 are assembled and connected with the line frame 1.
In a specific application example, four pairs of cylindrical bosses are symmetrically designed on four opposite corners of the upper module and the lower module of the circuit frame 1, through holes 105 are formed in the cylindrical bosses, and the circuit frame 1 is fixedly connected with the mounting supporting plate 9 through the through holes 105 by using bolts.
Referring to fig. 5, a partial enlarged view a of the circuit frame lower module of the present invention is shown. Four first bosses 104 with sliding groove structures are processed in the lower module of the circuit frame 1, and four second bosses 802 with sliding groove structures which are installed in a matched manner are correspondingly designed on the main control unit 8; an internal thread hole is tapped in the first boss 104 on the circuit frame 1, a through hole is opened in the second boss 802 on the main control unit 8, and the circuit frame 1 and the main control unit 8 are assembled through the first boss 104 and the second boss 802 and are fixedly connected through screws.
In a specific application example, the positive electrode crimping connector 2 and the negative electrode crimping connector 3 are copper sheets with a U-shaped structure, and are respectively connected with the positive electrode and the negative electrode of the single storage battery for collecting the voltage and the internal resistance of the storage battery.
In a specific application example, the temperature sensor 4 is attached to the negative electrode pressing joint 3 and is wrapped for contact measurement of the negative electrode temperature of the storage battery.
In a specific application example, one end of the cable 5 is connected to the main control unit 8, and the other end is connected to the positive electrode crimping connector 2, the negative electrode crimping connector 3 and the temperature sensor 4 respectively.
In a specific application example, the cable 5 is led out from the conduit 6, and in order to prevent the cable 5 from being damaged in the using process, the conduit 6 is designed in an arc shape and made of plastics; the end of the line pipe 6 is designed with a pressing groove 601, and the line pipe 6 is assembled and connected with the line frame 1 by clamping the pressing groove 601 in the line pipe pressure opening 102.
In a specific application example, the elastic tube 7 is made of elastic plastic and is used for routing and protecting cables, one end of the elastic tube is inserted into the hole 103 on the line frame 1, and the other end of the elastic tube is connected to the wiring hole 801 on the main control unit 8.
In a specific application example, two second bosses 802 with a sliding groove structure are respectively machined on two side surfaces of the main control unit 8, a first boss 104 with a sliding groove structure, which is installed in a matched manner with the second boss 802, is designed on the circuit frame 1, and the main control unit 8 and the circuit frame 1 are assembled through the second boss 802 and the first boss 104 and are fixedly connected through screws.
In a specific application example, the mounting plate 9 is in a "U" shape, an end face 901 of the mounting plate is welded to a cabinet of a battery pack, and the circuit frame 1 is erected on the mounting plate 9 and fixedly connected with the mounting plate through the through hole 105 and the through hole 902 by using bolts.
In a specific application example, a plurality of wiring holes 801 (for example, 20) are reserved at two ends of the main control unit 8, and can synchronously support independent monitoring of the voltage, the internal resistance and the temperature of a plurality of single storage batteries (for example, 40 single storage batteries); the main control unit 8 is provided with a plurality of status indicator lamps 803 (for example, 40 status indicator lamps), each status indicator lamp 803 corresponds to each detected single storage battery, the status indicator lamp 803 is green to indicate that the status of the corresponding single storage battery is normal, and red display indicates that the corresponding single storage battery is faulty, and the faulty single storage battery can be quickly positioned by observing the display color of the status indicator lamp 803 during maintenance.
In a specific application example, the main control unit 8 comprises an attenuation isolation network, an analog switch matrix, a variable gain amplifier and a digital-to-analog conversion unit, a low-power ARM32 bit processor, a large-capacity EEPROM, a CAN bus communication module and a battery management module; the main control unit 8 can process and obtain voltage difference data among the storage batteries by acquiring the voltage of each single storage battery in real time, and then can preliminarily position the failed single storage battery by adopting static analysis means such as analogy, feature extraction and the like; the main control unit 8 can obtain the time domain change condition of the pressure difference curve among the storage batteries in the running process of the vehicle by continuously sampling and storing the pressure difference data among the single storage batteries, thereby further obtaining the characteristic parameters of the single storage batteries so as to accurately position faults; the main control unit 8 carries out contact temperature measurement and acquisition on the cathodes of the single storage batteries through the temperature sensors 4, and can provide effective thermal data reference for storage battery fault judgment.
The whole set of device is fully compatible with the structure of the storage battery cabinet body of the existing urban rail vehicle and adopts a modular design, the circuit frame 1 and the main control unit 8 can be separated, and in addition, the circuit frame 1 can be disassembled and assembled from the mounting supporting plate 9, so that the device is convenient to inspect and troubleshoot and the storage battery is convenient to maintain; in order to reduce the weight of the device and ensure the structural strength, the shells of the circuit frame 1 and the main control unit 8 are made of aluminum alloy materials.
The working principle of the invention is as follows:
as shown in fig. 1, fig. 8, fig. 10 and fig. 11, the invention adopts a modular design, the circuit frame 1 is divided into an upper part and a lower part and structurally separated from the main control unit 8, the appearance structure of the whole set of device is similar to a cover plate buckled and pressed on the storage battery cabinet, all parts are arranged in the circuit frame 1, the circuit frame 1 is fixed on the storage battery cabinet by bolts by means of the mounting support plate 9, and the device has compact structure and convenient disassembly and assembly, and can be adapted to mechanical and electrical interfaces of the existing urban rail vehicle storage battery cabinet.
The invention is provided with a plurality of groups of positive and negative pressure connectors and temperature sensors 4 for collecting the working properties of the storage batteries, and can synchronously support independent monitoring on 40 single storage batteries at most. The whole set of device is provided with an operating power supply by a tested storage battery pack, the main control unit 8 collects the voltage, internal resistance and temperature data of the storage battery pack and the single battery in real time through the positive and negative pressure connectors and the temperature sensor 4 when the device works, online monitoring of the state of the storage battery can be realized by means of various modules integrated in the main control unit 8 and used for processing, analyzing and storing data, and diagnosis and positioning of faults can also be realized through analysis and processing means such as analogy, feature extraction, curve identification and the like among monitoring data of the storage battery. Meanwhile, the main control unit 8 also provides a wireless transmission and CAN bus communication interface for the outside, and real-time landing and getting on the bus of the monitored data CAN be realized. In addition, the main control unit 8 of the present invention is designed with a plurality of status indicator lights 803, each status indicator light 803 corresponds to each detected single battery, the status indicator light 803 is green to indicate that the status of the corresponding single battery is normal, and red to indicate that the corresponding single battery is faulty, and the faulty single battery can be quickly located by observing the display color of the status indicator light 803 during maintenance.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may be made by those skilled in the art without departing from the principle of the invention.
Claims (13)
1. The on-line monitoring device for the storage battery pack of the urban rail vehicle is characterized by comprising a circuit frame (1), a plurality of assembly joint components and a main control unit (8), wherein the circuit frame (1) is covered on a storage battery cabinet, each assembly joint component comprises a positive electrode pressing joint (2), a negative electrode pressing joint (3) and a temperature sensor (4), and the positive electrode pressing joint (2) and the negative electrode pressing joint (3) are respectively connected with the positive electrode and the negative electrode of the storage battery and used for collecting the voltage and the internal resistance of the storage battery; the temperature sensor (4) is used for measuring the temperature of the cathode of the storage battery in a contact mode; and the information collected by the positive electrode pressing joint (2), the negative electrode pressing joint (3) and the temperature sensor (4) is transmitted to the main control unit (8).
2. The on-line monitoring device for the urban rail vehicle storage battery pack according to claim 1, characterized in that the line frame (1) is an H-shaped framework, and the main control unit (8) is detachably mounted in the middle of the line frame (1).
3. The on-line monitoring device for the urban rail vehicle storage battery pack according to claim 1, characterized in that the line frame (1) comprises an upper module and a lower module which are connected in a buckling manner.
4. The on-line monitoring device for the urban rail vehicle storage battery pack according to claim 3, characterized in that a plurality of pairs of cylindrical bosses (101) are symmetrically designed on both the upper module and the lower module of the circuit frame (1), an internal thread hole is formed in the cylindrical boss (101) of the lower module, and a circular through hole is formed in the cylindrical boss (101) of the upper module corresponding to the internal thread hole; the upper module and the lower module are fixedly connected into a whole through each pair of cylindrical bosses (101) through screws.
5. The on-line monitoring device for the urban rail vehicle storage battery pack according to claim 3, characterized in that a plurality of pairs of semicircular line pipe pressure openings (102) are symmetrically designed on the upper module and the lower module of the line frame (1), the semicircular line pipe pressure openings (102) of the upper module and the lower module are correspondingly combined into a plurality of circular line pipe pressure openings, and the pressure grooves (601) at the end parts of a plurality of line pipes (6) are clamped in the line frame (1) through the circular line pipe pressure openings, so that the line pipes (6) are assembled and connected with the line frame (1).
6. The on-line monitoring device for the urban rail vehicle storage battery pack according to claim 5, characterized in that a cable (5) is led out of the wire tube (6), one end of the cable (5) is connected with a main control unit (8), and the other end of the cable is respectively connected with the positive electrode crimping head (2), the negative electrode crimping head (3) and the temperature sensor (4).
7. The on-line monitoring device for the urban rail vehicle storage battery pack according to claim 3, characterized in that four pairs of cylindrical bosses are symmetrically designed on four opposite corners of the upper module and the lower module of the line frame (1), through holes (105) are formed in the cylindrical bosses, and the line frame (1) is fixedly connected with the mounting support plate (9) through the through holes (105) by using connecting pieces.
8. The urban rail vehicle storage battery pack online monitoring device according to claim 7, wherein the mounting support plate (9) is of a U-shaped structure, the end face (901) of the mounting support plate (9) is welded with a storage battery pack cabinet body, and the line frame (1) is erected on the mounting support plate (9) and is fixedly connected with the through hole (105) and the through hole (902) through a connecting piece.
9. The on-line monitoring device for the urban rail vehicle battery pack according to any one of claims 1-8, characterized in that at least one first boss (104) is arranged on the circuit frame (1), and a second boss (802) matched with the first boss (104) is arranged on the main control unit (8); be equipped with the internal thread hole in first boss (104), open in second boss (802) and have the through-hole, assembly connection is realized through first boss (104) and second boss (802) to circuit frame (1) and main control unit (8).
10. The on-line monitoring device for the urban rail vehicle storage battery pack according to any one of claims 1-8, characterized in that the positive electrode crimping head (2) and the negative electrode crimping head (3) in each group of the connector assemblies are copper sheets with U-shaped structures, and the temperature sensor (4) is attached to and wrapped by the negative electrode crimping head (3).
11. The on-line monitoring device for the urban rail vehicle storage battery pack according to any one of claims 1-8, characterized in that a plurality of wiring holes (801) are reserved at two ends of the main control unit (8) respectively and are used for synchronously supporting independent monitoring of voltage, internal resistance and temperature of the single storage battery.
12. The on-line monitoring device for the urban rail vehicle storage battery pack according to any one of claims 1-8, characterized in that the main control unit (8) is provided with a plurality of status indicator lamps (803), and each status indicator lamp (803) corresponds to each detected single storage battery.
13. The on-line monitoring device for the urban rail vehicle storage battery pack according to any one of claims 1-8, characterized in that the main control unit (8) comprises an attenuation isolation network, an analog switch matrix, a variable gain amplifier and digital-to-analog conversion unit, a processor, an EEPROM, a CAN bus communication module and a battery management module; the main control unit (8) acquires the voltage of each single storage battery in real time, processes the voltage difference data to obtain the voltage difference data between the storage batteries, and positions the failed single storage battery through analysis.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111542345.6A CN114325391B (en) | 2021-12-13 | 2021-12-13 | Urban rail vehicle storage battery on-line monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111542345.6A CN114325391B (en) | 2021-12-13 | 2021-12-13 | Urban rail vehicle storage battery on-line monitoring device |
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| CN114325391B CN114325391B (en) | 2024-08-16 |
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