Railcar battery health management system

Abstract

The utility model discloses a railcar storage battery health management system, including setting on the railcar vehicle -mounted generator, vehicle -mounted battery still includes with vehicle -mounted generator, vehicle -mounted battery connection's logic controller, wherein, between vehicle -mounted generator, vehicle -mounted battery is connected through bidirectional inverter, voltage sensor is provided on the output terminal of vehicle -mounted battery, and voltage sensor and logic controller communication connection are connected. The utility model provides a railcar storage battery health management system, through increasing logic controller completes battery management work, namely voltage sensor real -time detection vehicle -mounted battery's voltage signal to the logic controller, and the logic controller carries out logic judgment to the received voltage signal, and whether the vehicle -mounted generator is based on the result of judgment decides for vehicle -mounted battery and carries out charging operation.

Description

Technical Field

[0001] This utility model relates to the technical field of battery charging. More specifically, this utility model relates to a health management system for rail vehicle batteries. Background Technology

[0002] The DC 24V power supply of the railcar is mainly provided by a battery pack (also known as the onboard battery) and a charging generator (also known as the onboard generator). The main purpose of the battery pack is to provide a strong current to the starter motor during startup, and to supply power to various electrical devices when the diesel engine is off or the charging generator voltage is low. The charging generator is an integrated rectifier and voltage regulator unit and is the main power source for the vehicle's DC system. During normal operation, it supplies power to all electrical devices (except the starter motor) and charges the battery pack to replenish the energy consumed by the battery during use. When the vehicle is stationary, the charging generator stops working, and the battery pack supplies power to all equipment. After a period of time, the voltage of the battery pack will decrease, affecting the normal operation of the equipment and also affecting the vehicle's restart. When the passengers are resting, they need to charge walkie-talkies, mobile phones, etc., using 220V AC power. At this time, the onboard generator needs to be turned on to provide power. However, vehicle generators have relatively high power, and using them only to charge small devices or for interior lighting will waste energy and generate a lot of noise. In addition, battery packs often fail to function properly because people forget to charge them. Utility Model Content

[0003] One object of this invention is to solve the above-mentioned problems and / or defects, and to provide the advantages that will be described later.

[0004] To achieve these objectives and other advantages of this utility model, a railcar battery health management system is provided, including an on-board generator and an on-board battery installed on the railcar, and a logic controller connected to the on-board generator and the on-board battery.

[0005] The on-board generator and the on-board battery are connected via a bidirectional inverter.

[0006] A voltage sensor is provided on the output terminal of the vehicle battery, and the voltage sensor is communicatively connected to the logic controller.

[0007] The logic controller is communicatively connected to the display screen on the railcar's power system.

[0008] The logic controller is configured to use a PLC, and a circuit breaker I is installed on the connection line between the vehicle battery and the PLC, and a circuit breaker II is installed between the vehicle generator and the bidirectional inverter.

[0009] Preferably, a manual start / stop switch is provided on the connection line between the vehicle-mounted generator and the logic controller.

[0010] Preferably, it also includes a temperature sensor and a smoke sensor disposed on the surface of the vehicle battery and communicated with the logic controller.

[0011] Preferably, the logic controller is connected to the display screen via an RS232 circuit and / or an RS485 circuit.

[0012] Preferably, the vehicle battery is located inside the battery box;

[0013] The battery box is configured with a double-layer structure, with a flame-retardant layer in the interlayer.

[0014] Preferably, the battery box has an arc-shaped transition at both its inner and outer edges, and the battery box has a silicone layer on its inner sidewall and the inner sidewall of the vehicle battery, respectively.

[0015] Preferably, the interlayer is also provided with a spiral tube that cooperates with an external water-cooling or air-cooling circulation device.

[0016] This utility model has at least the following beneficial effects: This utility model designs a health management system for railcar batteries. Compared with the prior art, it completes the battery management work by adding a logic controller. That is, the voltage sensor detects the voltage signal of the on-board battery in real time and feeds it back to the logic controller. The logic controller performs logical judgment on the received voltage signal and decides whether the on-board generator should charge the on-board battery based on the judgment result, that is, to realize the automatic charging of the on-board battery.

[0017] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the railcar battery health management system in one embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the railcar battery health management system in another embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the battery box structure of the present invention. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0022] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0023] Example 1

[0024] A railcar battery health management system, the structure of which is as follows: Figure 1 As shown, the system includes an onboard generator 1 and an onboard battery 2 mounted on the railcar, as well as a logic controller 3 connected to the onboard generator 1 and the onboard battery 2. The logic controller 3 is the core of this system and has functions such as starting and stopping the onboard generator 1, voltage regulation, and battery management. The generator start-stop function determines whether the battery needs to be charged based on the programmed firmware logic, thus protecting the battery. The voltage regulation function is used for converting 220V AC power to 24V DC power. The battery management function is used to detect the charge and status of the onboard battery and adjust the power output according to actual needs to extend the battery life. The logic controller 3 is electrically connected to the onboard battery 2 to provide the operating voltage for the logic controller 3. The logic controller 3 is connected to the start / stop switch of the onboard generator 1 via a data line, so that the logic controller 3 can directly start or stop the onboard generator 1 by transmitting signals, that is, automatically switch the working state of the onboard generator 1.

[0025] The logic controller 3 is communicatively connected to the display screen on the railcar's power system. This allows users to clearly understand information such as the current battery voltage through the railcar's power system's display screen, enabling timely charging when the battery is low and preventing power depletion. The logic controller and display screen are connected via RS232 and / or RS485 circuits. It should be noted that RS232 and / or RS485 circuits are conventional circuits, and their circuitry and connections will not be elaborated upon here. For example, in the battery management system of patent number 202120500854.1, the control unit achieves bidirectional data connection with the computer terminal via an RS232 circuit. This invention, being applied to railcars, provides two communication interfaces to ensure compatibility with future upgrades and modifications, guaranteeing better adaptability.

[0026] The vehicle-mounted generator 1 and the vehicle-mounted battery 2 are connected by a bidirectional inverter 4. The main function of the bidirectional inverter 4 is to convert the 220V AC voltage of the vehicle-mounted generator 1 into 24V DC voltage and output it to the vehicle-mounted battery when it is necessary to replenish the vehicle-mounted battery with power; and to convert the 24V DC power of the vehicle-mounted battery into 220V AC power for use by the passengers when using low-power household electricity.

[0027] A voltage sensor 5 is provided on the output terminal of the vehicle battery 2, and the voltage sensor 5 is communicatively connected to the logic controller 3. The voltage sensor 5 detects the voltage signal of the vehicle battery 2 in real time and feeds it back to the logic controller 3. The logic controller 3 performs logical judgment on the received voltage signal and decides whether the vehicle generator 1 should charge the vehicle battery 2 based on the judgment result.

[0028] The logic controller is configured as a PLC, and a circuit breaker I6 is installed on the connection line between the vehicle battery and the PLC. A circuit breaker II7 is installed between the vehicle generator and the bidirectional inverter. In this scheme, using a PLC as the logic controller simplifies the structure and keeps costs under control. Meanwhile, the circuit breakers on the connection lines can be used as switches, providing a protective effect.

[0029] Working principle: In practical applications, when the battery is low after continuous discharge or has not been charged for a long time, AC charging is required. The logic controller 3 judges the amount of power of the vehicle battery 2 and automatically starts the vehicle generator 1 to charge the vehicle battery.

[0030] When the vehicle is stationary and the engine is off, and the work is completed, if personnel need to rest inside the vehicle and do not need to use high-power electrical appliances such as air conditioning, there is no need to turn on the vehicle generator 1. The system will provide 1000W of 220V AC power for personnel to charge their walkie-talkies and mobile phones, keeping the vehicle relatively quiet and facilitating better rest for personnel.

[0031] Example 2

[0032] like Figure 1 In practice, a manual start / stop switch 8 is installed on the connection line between the vehicle-mounted generator and the logic controller. This design allows the equipment to be started and stopped manually as needed, providing better adaptability.

[0033] Example 3

[0034] like Figure 2 In the specific implementation process, it also includes a temperature sensor 9 and a smoke sensor 10 installed on the surface of the on-board battery and connected to the logic controller. This solution allows the battery equipment to acquire its operating status and environmental conditions during operation and non-operation phases via the temperature and smoke sensors. When the on-board battery temperature is too high, or when there is smoke in the environment or smoke generated by the battery due to safety hazards, corresponding alarm information will be issued through the railcar's existing audible and visual warning system.

[0035] Example 4

[0036] like Figure 3 In the specific implementation process, the vehicle battery is set inside the battery box 11. The vehicle battery 2 is installed and maintained through the battery box 11. The battery box 11 is welded to the railcar itself to make the equipment itself stable. When vibration occurs, it will not cause safety hazards to the vehicle battery 2 inside. In practical applications, the left and right side walls inside the battery box 11 are respectively provided with matching slots 12 (which can be protruding or embedded). Later, depending on the size and number of vehicle batteries 11, partitions 13 can be inserted into the slots 12 to divide the inside of the battery box 11 into multiple rows. The partitions 13 or the bottom surface of the battery box are respectively provided with matching blocks 14 or sliders. The bottom of the vehicle battery 2 is provided with slots or grooves that match the blocks or sliders, so that multiple vehicle batteries 2 can be fixed to the partitions 13 or the battery box 11 in multiple rows.

[0037] Furthermore, in practical applications, the battery box 11 should adopt a front-opening design, and its opening method can be set as a hinged opening type or a sliding opening type, with a corresponding lock to complete the sealing of the inside of the battery box.

[0038] The battery box 11 is configured with a double-layer structure, with a flame-retardant layer 15 in the interlayer. The double-layer structure allows the weight of the device to be controlled, and the flame-retardant layer 15 prevents the fire from spreading rapidly after it is ignited. In practical applications, the flame-retardant layer 15 can also be set as a vacuum flame-retardant layer as needed, such as using a vacuum wall flame-retardant insulation board as the flame-retardant material.

[0039] The battery box 11 has arc-shaped transitions on both its inner and outer edges 16, and silicone layers (not shown) are respectively provided on the inner sidewalls of the battery box and the vehicle battery. This structure with arc-shaped transitions on the inner and outer edges of the battery box 11 gives it a better appearance during application and reduces damage when it collides with a person or the battery. The silicone layer design also significantly reduces the impact force when the vehicle battery collides with the battery box 11, ensuring that its internal materials are in a relatively stable working environment. As needed, the silicone layer can be provided on the entire inner sidewall of the vehicle battery, or multiple arc-shaped protrusions 17 can be provided.

[0040] The interlayer is also equipped with a spiral tube 18 that works in conjunction with an external water-cooling or air-cooling circulation device. In this design, the spiral tube 18 allows cooling water or natural air to be introduced into the spiral tube to control the temperature of the equipment when it is under high load for a long time, so as to prevent it from being at an excessively high temperature for a long time, which would affect the service life of the equipment and cause safety hazards. The structure and connection of the external water-cooling or air-cooling circulation device are existing technologies and will not be described here. At the same time, the external water-cooling or air-cooling circulation device can be designed independently or it can be combined with the existing water-cooling or air-cooling circulation device on the railcar.

[0041] The above solutions are merely illustrative examples of preferred embodiments, but are not limited thereto. When implementing this invention, appropriate substitutions and / or modifications can be made according to the user's needs.

[0042] The number of devices and processing scale described herein are for the purpose of simplifying the description of this utility model. Applications, modifications, and variations of this utility model will be readily apparent to those skilled in the art.

[0043] Although embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. It can be applied to various fields suitable for this utility model. Other modifications can be readily implemented by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and examples shown and described herein.

Claims

1. A railcar battery health management system, comprising an onboard generator and an onboard battery mounted on the railcar, characterized in that, It also includes a logic controller connected to the vehicle generator and vehicle battery; The on-board generator and the on-board battery are connected via a bidirectional inverter. A voltage sensor is provided on the output terminal of the vehicle battery, and the voltage sensor is communicatively connected to the logic controller. The logic controller is communicatively connected to the display screen on the railcar's power system. The logic controller is configured to use a PLC, and a circuit breaker I is installed on the connection line between the vehicle battery and the PLC, and a circuit breaker II is installed between the vehicle generator and the bidirectional inverter. The vehicle battery is located inside the battery box; The battery box is configured to have a double-layer structure with a flame-retardant layer in the interlayer. The battery box has an arc-shaped transition inside and outside, and a silicone layer is provided on the inner wall of the battery box and the vehicle battery respectively. The interlayer is also equipped with a spiral tube that works in conjunction with an external water-cooling or air-cooling circulation device.

2. The railcar battery health management system as described in claim 1, characterized in that, A manual start / stop switch is installed on the connection line between the vehicle-mounted generator and the logic controller.

3. The railcar battery health management system as described in claim 1, characterized in that, It also includes a temperature sensor and a smoke sensor that are mounted on the surface of the vehicle battery and communicate with the logic controller.

4. The railcar battery health management system as described in claim 1, characterized in that, The logic controller and the display screen are connected via RS232 and / or RS485 circuits.

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