CN114325391B - Urban rail vehicle storage battery on-line monitoring device - Google Patents
Urban rail vehicle storage battery on-line monitoring device Download PDFInfo
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- CN114325391B CN114325391B CN202111542345.6A CN202111542345A CN114325391B CN 114325391 B CN114325391 B CN 114325391B CN 202111542345 A CN202111542345 A CN 202111542345A CN 114325391 B CN114325391 B CN 114325391B
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Abstract
The invention discloses an on-line monitoring device for a storage battery pack of an urban rail vehicle, which comprises a circuit frame, a plurality of joint assemblies and a main control unit, wherein the circuit frame is covered on a storage battery cabinet; the temperature sensor is used for measuring the temperature of the negative electrode of the storage battery in a contact manner; and the information acquired by the positive extreme pressure connector, the negative extreme pressure connector and the temperature sensor is transmitted to the main control unit. The invention has the advantages of compact structure, convenient disassembly and assembly, capability of realizing the real-time automatic acquisition of the working condition data of the battery, 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 a storage battery pack of an urban rail vehicle.
Background
The storage battery pack is used as one of key components of an auxiliary power supply system of 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 of the storage battery pack is directly related to the safe operation of a vehicle. Because of the inherent chemical characteristics, the storage battery has the problems of capacity reduction, voltage unbalance, abnormal temperature and the like in the using process, so that operation and maintenance staff need to maintain the battery regularly. However, in the current operation and maintenance process of the storage battery pack, the problems of incomplete maintenance, poor pertinence, lack of maintenance means and the like generally exist, the quality of the battery pack is damaged, the service life is reduced if the battery pack is light, the requirement of backup power supply cannot be met, and accidents such as explosion, fire and the like are serious.
At present, the existing storage battery monitoring device is generally used on new energy automobiles, and the storage battery monitoring device for urban rail vehicles can only monitor the terminal voltage and current of the storage battery, and manual inspection still needs to be carried out regularly for solving the overall health state of the storage battery.
Because the manual inspection has a certain interval time, when the battery pack fails in the interval time, the battery pack cannot be effectively reminded and transmitted to operation and maintenance personnel, and the failure cannot be timely found and removed, so that the battery pack becomes a hidden danger.
In addition, because the single battery of urban rail vehicle often establishes ties and uses in groups, single battery is unusual will lead to unable normal work of whole group battery, and current group battery monitoring devices do not effectively monitor single battery state for be difficult to the location problem battery piece among the maintenance process, lead to trouble shooting inefficiency, accompanying maintenance to waste time and energy etc. inconvenience.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the technical problems existing in the prior art, the invention provides the on-line monitoring device for the urban rail vehicle storage battery pack, which has the advantages of compact structure, convenience in disassembly and assembly and capability of realizing real-time automatic acquisition of battery working condition data.
In order to solve the technical problems, the invention adopts the following technical scheme:
The on-line monitoring device for the urban rail vehicle storage battery pack comprises a circuit frame, a plurality of group of joint assemblies and a main control unit, wherein the circuit frame is covered on a storage battery cabinet, each group of joint assemblies comprises a positive extreme pressure joint, a negative extreme pressure joint and a temperature sensor, and the positive extreme pressure joint and the negative extreme pressure 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 negative electrode of the storage battery in a contact manner; and the information acquired by the positive extreme pressure connector, the negative extreme pressure connector 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 arranged in the middle of the circuit frame in a disassembling 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 designed with a plurality of pairs of cylindrical bosses, the cylindrical bosses of the lower module are internally provided with threaded holes, and the cylindrical bosses of the upper module corresponding to the threaded holes are internally 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 circuit frame are symmetrically designed with a plurality of semicircular wire tube press openings, the semicircular wire tube press openings of the upper module and the lower module are correspondingly combined into a plurality of circular wire tube press openings, and press grooves at the ends of the wire tubes are clamped in the circuit frame through the circular wire tube press openings, so that the wire tubes and the circuit frame are assembled and connected.
As a further improvement of the invention: and one end of the cable is connected with the main control unit, and the other end of the cable is respectively connected with the positive extreme pressure connector, the negative extreme pressure connector and the temperature sensor.
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 arranged on the mounting support plate and fixedly connected with the mounting support plate through the through hole and the through hole by using the 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 first boss is internally provided with an internal thread hole, the second boss is internally provided with a through hole, and the circuit frame is in assembly connection with the main control unit through the first boss and the second boss.
As a further improvement of the invention: the positive extreme pressure connector and the negative extreme pressure connector in each connector assembly are copper sheets with U-shaped structures, and the temperature sensor is attached to the negative pressure connector and wrapped.
As a further improvement of the invention: and two ends of the main control unit are respectively reserved with a plurality of wiring holes 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 among the storage batteries, and analyzes and locates the single storage battery with faults.
Compared with the prior art, the invention has the advantages that:
1. The on-line monitoring device for the urban rail vehicle storage battery pack is suitable for the on-line monitoring device for the urban rail vehicle storage battery pack, realizes the real-time automatic acquisition of battery working condition data, 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 a key point of maintenance work of the urban rail vehicle storage battery pack and ensuring the stable running of a train.
2. The on-line monitoring device for the urban rail vehicle storage battery pack is an on-line monitoring device which has real-time data, comprehensive monitoring and fault diagnosis functions, is used for scientifically and effectively finding and solving hidden dangers in the urban rail vehicle storage battery pack, and improves the safety and maintenance efficiency of the storage battery pack.
3. The on-line monitoring device for the urban rail vehicle storage battery pack has the advantages that the outer structure is similar to a cover plate buckled on a storage battery cabinet, the device is compact in structure and convenient to assemble and disassemble, and the sensor, the electric connecting piece, the signal attenuation isolation device, the main control unit and other components are integrated in the device. The main control unit CAN collect working condition data of the storage battery through the sensor and the electric connecting piece, is in charge of processing, analyzing and storing the data, provides wireless transmission and CAN bus communication interfaces to the outside, and CAN realize real-time landing and getting on of monitoring data. The monitoring device can be adapted to the mechanical and electrical interfaces of the existing urban rail vehicle storage battery cabinet, can realize on-line monitoring and fault diagnosis of the voltage, the internal resistance and the temperature of the storage battery pack and the single battery, and is particularly suitable for on-line monitoring of the urban rail vehicle storage battery pack.
Drawings
Fig. 1 is a schematic perspective view of the present invention in a specific application example.
Fig. 2 is a schematic diagram of the principle of the front view structure of the present invention in a specific application example.
Fig. 3 is a schematic structural diagram of a circuit frame in a specific application example of the present invention.
Fig. 4 is a schematic structural diagram of a circuit frame module in a specific application example of the present invention.
Fig. 5 is an enlarged schematic view of the structural principle at a in fig. 4.
Fig. 6 is a schematic view of the structure of the joint assembly in a specific application example of the present invention.
Fig. 7 is a schematic structural diagram of a master control unit in an embodiment of the present invention.
Fig. 8 is a schematic structural diagram of a master control unit in a specific application example of the present invention.
Fig. 9 is a schematic view of the structural principle of the mounting pallet in a specific application example of the present invention.
Fig. 10 is a schematic diagram of the assembled structure of the invention with a battery cabinet in a specific application example.
Fig. 11 is a schematic diagram of the electrical principle of the master control unit in a specific application example of the present invention.
Legend description:
1. A circuit frame; 2. a positive extreme pressure joint; 3. a negative extreme 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 wire tube pressing opening; 103. a hole; 104. a first boss; 105. a through hole; 601. pressing a groove; 801. a wiring hole; 802. a second boss; 803. status indicator lights; 901. an end face; 902. and a through hole.
Detailed Description
The invention will be described in further detail with reference to the drawings and the specific examples.
As shown in fig. 1-11, the urban rail vehicle storage battery pack on-line monitoring device comprises a circuit frame 1, a plurality of group joint assemblies 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 joint components comprises an anode pressure joint 2, a cathode pressure joint 3 and a temperature sensor 4, wherein the anode pressure joint 2 and the cathode pressure joint 3 are respectively connected with the anode and the cathode of the storage battery and are 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 negative electrode of the storage battery in a contact mode. The information collected by the positive electrode pressure joint 2, the negative electrode pressure 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 pressure joint 2, a negative electrode pressure joint 3, a temperature sensor 4, a cable 5, a wire 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 upper and lower modules, namely an upper module and a lower module.
In a specific application example, the upper module and the lower module of the circuit frame 1 are symmetrically designed with a plurality of pairs of cylindrical bosses 101, the cylindrical bosses 101 of the lower module are provided with internal threaded holes, and the cylindrical bosses 101 of the upper module corresponding to the internal threaded 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 101 by screws.
In a specific application example, the upper module and the lower module of the circuit frame 1 are symmetrically designed with a plurality of semicircular wire tube pressing openings 102, the semicircular wire tube pressing openings 102 of the upper module and the lower module can be correspondingly combined into a plurality of circular wire tube pressing openings (40 in this example), and the pressing grooves 601 at the end parts of a plurality of wire tubes 6 (40 in this example) can be clamped in the circuit frame 1 through each circular wire tube pressing opening, so that the assembly connection of the wire tubes 6 and the circuit frame 1 is realized.
In a specific application example, four pairs of cylindrical bosses are symmetrically designed on four opposite angles 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 support plate 9 through the through holes 105 by using bolts.
Referring to fig. 5, a partial enlarged view a of the under-circuit-frame module according to the present invention is shown. A first boss 104 with four sliding groove structures is processed in the lower module of the circuit frame 1, and four second bosses 802 with sliding groove structures which are matched with the first boss are correspondingly designed on the main control unit 8; an internal thread hole is tapped in a first boss 104 on the circuit frame 1, a through hole is tapped in a 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 fixedly connected through screws.
In a specific application example, the positive extreme pressure connector 2 and the negative extreme pressure connector 3 are copper sheets with U-shaped structures, and are respectively connected with the positive electrode and the negative electrode of the single storage battery and used 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 press joint 3 and is wrapped for measuring the temperature of the negative electrode of the storage battery in a contact manner.
In a specific application example, one end of the cable 5 is connected with the main control unit 8, and the other end is respectively connected with the positive electrode pressure joint 2, the negative electrode pressure joint 3 and the temperature sensor 4.
In a specific application example, the cable 5 is led out from the spool 6, and in order to prevent the cable 5 from being damaged in the use process, the spool 6 is of an arc-shaped design and is made of plastic; the end part of the spool 6 is provided with a pressing groove 601, and the spool 6 is assembled and connected with the circuit frame 1 by clamping the pressing groove 601 in the spool pressing opening 102.
In a specific application example, the elastic tube 7 is made of plastic with elasticity, and is used for wiring and protecting the cable, one end of the elastic tube is inserted into the hole 103 on the circuit 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 two sliding groove structures are respectively machined on two sides of the main control unit 8, a first boss 104 with a sliding groove structure, which is matched with the second bosses 802, is designed on the circuit frame 1, and the main control unit 8 and the circuit frame 1 are assembled through the second bosses 802 and the first bosses 104 and are fixedly connected through screws.
In a specific application example, the mounting support plate 9 has a "U" structure, the end face 901 of the mounting support plate is welded to the cabinet body of the storage battery pack, and the circuit frame 1 is mounted on the mounting support plate 9 and fixedly connected with the mounting support plate through the through hole 105 and the through hole 902 by using bolts.
In a specific application example, two ends of the main control unit 8 are respectively reserved with a plurality of wiring holes 801 (for example, 20) which can synchronously support independent monitoring (for example, 40) of the voltage, the internal resistance and the temperature of a plurality of single storage batteries; the main control unit 8 is provided with a plurality of status indication lamps 803 (for example, 40 status indication lamps 803 respectively correspond to each detected single storage battery, the status indication lamps 803 are green to indicate that the corresponding single storage battery is normal in status, the display of red indicates that the corresponding single storage battery is faulty, and the faulty single storage battery can be rapidly located by observing the display color of the status indication lamps 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, a digital-to-analog conversion unit, a low-power ARM32 bit processor, a high-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 all the storage batteries by collecting the voltage of each single storage battery in real time, and then can preliminarily locate the single storage battery with faults 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 all the storage batteries in the running process of the vehicle by continuously sampling and storing the pressure difference data among the storage batteries, so that the characteristic parameters of the storage batteries are further obtained to facilitate accurate fault positioning; the main control unit 8 performs contact temperature measurement and collection on the cathodes of all the single storage batteries through the temperature sensor 4, and can provide effective thermal data reference for fault judgment of the storage batteries.
The whole set of device is fully compatible with the structure of the existing urban rail vehicle storage battery pack cabinet body, adopts a modularized design, and the circuit frame 1 and the main control unit 8 can be separated, in addition, the circuit frame 1 can be disassembled from the mounting supporting plate 9, so that the device is convenient to check and arrange faults and maintain the storage battery pack; 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, 8, 10 and 11, the invention adopts a modularized design, the circuit frame 1 is divided into upper and lower modules and is structurally separated from the main control unit 8, the overall structure of the whole device is similar to a cover plate buckled on a storage battery cabinet, each part of the whole device is arranged in the circuit frame 1, the circuit frame 1 is fixed on the storage battery cabinet by a bolt through a mounting supporting plate 9, and the circuit frame 1 has a compact structure, is convenient to assemble and disassemble, and can be adapted to mechanical and electrical interfaces of the storage battery cabinet of the urban rail vehicle.
The invention is provided with a plurality of groups of positive and negative pressure joints and temperature sensors 4 for collecting the working properties of the storage batteries, and can synchronously support the independent monitoring of 40 single storage batteries at most. The whole set of device is provided with an operation power supply by the tested storage battery, and the main control unit 8 collects the voltage, internal resistance and temperature data of the storage battery and the single battery in real time through the positive and negative extreme pressure connectors and the temperature sensor 4 when in operation, and can realize on-line monitoring of the state of the storage battery by means of various modules integrated in the main control unit 8 and used for processing, analyzing and storing the data, and can also realize diagnosis and positioning of faults through analog, feature extraction, curve identification and the like of the 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, so that the real-time landing and getting-on of the monitoring data CAN be realized. In addition, a plurality of status indicator lamps 803 are designed on the main control unit 8, each status indicator lamp 803 corresponds to each detected single storage battery respectively, the status indicator lamp 803 is green to indicate that the corresponding single storage battery is normal in status, the display color indicates that the corresponding single storage battery is faulty, and the faulty single storage battery can be positioned rapidly by observing the display color of the status indicator lamp 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 examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the invention without departing from the principles thereof are intended to be within the scope of the invention as set forth in the following claims.
Claims (7)
1. The on-line monitoring device for the urban rail vehicle storage battery pack is characterized by comprising a circuit frame (1), a plurality of joint assemblies and a main control unit (8), wherein the circuit frame (1) is covered on a storage battery cabinet, each joint assembly comprises a positive extreme pressure joint (2), a negative pressure joint (3) and a temperature sensor (4), and the positive pressure joint (2) and the negative pressure joint (3) 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 (4) is used for measuring the temperature of the negative electrode of the storage battery in a contact manner; the positive electrode pressure joint (2), the negative electrode pressure joint (3) and the information acquired by the temperature sensor (4) are transmitted to the main control unit (8); the circuit frame (1) is an H-shaped framework, and the main control unit (8) is detachably arranged in the middle of the circuit frame (1); the circuit frame (1) comprises an upper module and a lower module which are connected in a buckling manner; the upper module and the lower module of the circuit frame (1) are symmetrically provided with a plurality of semicircular wire tube press openings (102), the semicircular wire tube press openings (102) of the upper module and the semicircular wire tube press openings of the lower module are correspondingly combined into a plurality of circular wire tube press openings, and press grooves (601) at the ends of a plurality of wire tubes (6) are clamped in the circuit frame (1) through the circular wire tube press openings, so that the wire tubes (6) are assembled and connected with the circuit frame (1); 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 pressure joint (2), the negative electrode pressure joint (3) and the temperature sensor (4); the battery pack mounting device comprises a main control unit (8), and is characterized by further comprising a mounting support plate (9), 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 cabinet body of the battery pack, a circuit frame (1) is arranged on the mounting support plate (9) and fixedly connected with a through hole (105) on the circuit frame (1) and a through hole (902) on the mounting support plate (9) through a connecting piece, at least one first boss (104) is arranged on the circuit frame (1), and a second boss (802) which is matched with the first boss (104) is arranged on the main control unit (8); the first boss (104) is internally provided with an internal thread hole, the second boss (802) is internally provided with a through hole, and the circuit frame (1) and the main control unit (8) are assembled and connected through the first boss (104) and the second boss (802).
2. The on-line monitoring device for the urban rail vehicle storage battery pack according to claim 1, wherein the upper module and the lower module of the circuit frame (1) are symmetrically designed with a plurality of pairs of cylindrical bosses (101), the cylindrical bosses (101) of the lower module are provided with internal threaded holes, and the cylindrical bosses (101) of the upper module corresponding to the internal threaded 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 (101) through screws.
3. The urban rail vehicle storage battery pack on-line monitoring device according to claim 1, wherein four pairs of cylindrical bosses are symmetrically designed on four opposite angles of an upper module and a 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 support plate (9) through the through holes (105) by using connecting pieces.
4. The urban rail vehicle storage battery pack on-line monitoring device according to any one of claims 1-3, wherein the positive electrode pressure joint (2) and the negative electrode pressure joint (3) in each joint assembly are copper sheets with U-shaped structures, and the temperature sensor (4) is attached to the negative electrode pressure joint (3) and wrapped.
5. The on-line monitoring device for urban rail vehicle storage battery packs according to any one of claims 1 to 3, wherein 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.
6. An on-line monitoring device for urban rail vehicle storage battery packs according to any one of claims 1-3, characterized in that the main control unit (8) is provided with a plurality of status indication lamps (803), and each status indication lamp (803) corresponds to each detected single storage battery.
7. The urban rail vehicle battery pack on-line monitoring device according to any one of claims 1-3, 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 among the storage batteries, and analyzes and locates the single storage battery with faults.
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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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|---|---|
| CN114325391A (en) | 2022-04-12 |
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