Variable frequency locomotive with automatic charging and charge-discharge equalization

Abstract

The application relates to a variable frequency locomotive with automatic charging and charge-discharge equalization, which comprises a locomotive body, a generator charging system and a battery equalizer. A first battery and a second battery are installed on the front car of the locomotive body, the battery equalizer is connected with the first battery and the second battery in series, the generator charging system comprises a generator and a connecting belt, the generator is connected with the rear car motor of the locomotive body based on the connecting belt, and the generator is connected with the first battery or the second battery and used for battery charging. The generator charging system is additionally arranged on the variable frequency locomotive, so that an effective power input is provided for the rear car when the rear car is in the process of descending the trolley, and the battery equalizer is arranged between the two batteries, so that the batteries directly compensate each other and the balance state of the storage batteries is automatically maintained. The variable frequency locomotive meets the actual needs of safety production in the underground transportation field, has the advantages of good storage battery charging efficiency, long service life, low locomotive failure rate, low manufacturing cost and the like, and can effectively reduce the safety risk.

Description

Technical Field

[0001] This application relates to the field of underground transport locomotive technology, and in particular to a variable frequency locomotive with automatic charging and charge-discharge balancing. Background Technology

[0002] The underground transport locomotive operates on a single-unit traction basis. When the preceding locomotive is traction, the following locomotive maintains a lowered pantograph and follows the preceding locomotive. The pantographs on both locomotives operate in one direction only; reversing direction could easily damage the pantograph. Under normal operating conditions, the locomotive raises its pantograph, receiving a 550V operating voltage from the overhead line. The power module and pre-charge module simultaneously provide 24V control power to the locomotive and charge its batteries. Due to the chemical changes within the two batteries and the influence of the external environment, the charging and discharging efficiencies of the two batteries differ.

[0003] During the transformation of the driverless locomotive project, the added auxiliary driving facilities (collision avoidance radar, cameras, wireless bridges, etc.) increased the power consumption to 300W. Coupled with the increased transport volume, the battery charging time could no longer meet the power demands. Furthermore, the charging system, the chemical changes in the batteries themselves, and the external environment caused an imbalance in the charging and discharging voltages of the two batteries, resulting in a high battery wear rate and frequent locomotive malfunctions. When the locomotive experiences a complete power outage (or the voltage is too low to maintain sufficient operating voltage for its electrical components), its protective mechanical structure will be triggered, leading to brake lock-up and malfunctions of the horn, pantograph, etc., posing significant safety hazards. When the locomotive stops running or goes off duty, the pantograph needs to be raised to charge the locomotive batteries, which may cause electric shock, fire, and other safety hazards. Utility Model Content

[0004] To address or partially address the problems existing in related technologies, this application provides an automatic charging and charge-discharge balancing variable frequency locomotive that provides effective power input when following another vehicle and enables the two batteries to compensate for each other.

[0005] The first aspect of this application provides an automatic charging and charge-discharge equalization variable frequency locomotive, comprising: a locomotive body, a generator charging system, and a battery equalizer. A No. 1 battery and a No. 2 battery are installed on the front of the locomotive body. The battery equalizer is connected in series with the No. 1 battery and the No. 2 battery. The generator charging system includes a generator and a connecting belt. The generator is connected to the rear motor of the locomotive body via the connecting belt, and the generator is connected to either the No. 1 battery or the No. 2 battery for battery charging.

[0006] The motor bearing pulley of the rear motor is connected to the generator pulley via a connecting belt.

[0007] Among them, battery number one and battery number two are connected to a power module and a pre-charge module.

[0008] The technical solution provided in this application may include the following beneficial effects:

[0009] This application provides a variable frequency locomotive with automatic charging and charge-discharge balancing. Based on the original charging method of the variable frequency locomotive, a generator charging system is added to ensure an effective power input for the following locomotive when the pantograph is lowered. Simultaneously, a battery equalizer is added between the two batteries, allowing them to directly compensate each other and automatically maintain the battery balance. This variable frequency locomotive meets the actual needs of safe production in underground transportation sites, and has advantages such as high battery charging efficiency, long service life, low locomotive failure rate, and low manufacturing cost, effectively reducing safety risks.

[0010] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0011] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0012] Figure 1 This is a schematic diagram showing the connection between the generator and the locomotive motor of the device illustrated in the embodiments of this application;

[0013] Figure 2 This is a schematic diagram of a locomotive battery charging circuit shown in an embodiment of this application;

[0014] Figure 3 This is a schematic diagram of the battery equalizer installation shown in an embodiment of this application;

[0015] Figure label:

[0016] In the diagram, 1—generator, 2—connecting belt, 3—locomotive motor, 4—wheel, 5—battery equalizer, 6—pre-charge module, 7—size I battery, 8—size II battery. Detailed Implementation

[0017] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this application more thorough and complete, and to fully convey the scope of this application to those skilled in the art.

[0018] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0019] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0020] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0021] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0022] In the diagram, 1—generator 1, 2—connecting belt 2, 3—locomotive motor, 4—wheel 4, 5—battery equalizer 5, 6—pre-charging module 6, 7—size one battery 7, 8—size two battery 8.

[0023] An automatic charging and charge-discharge balancing variable frequency locomotive includes: a locomotive body, a generator charging system, and a battery equalizer 5. Under normal operating conditions, the lead locomotive raises its pantograph, receiving a 550V operating voltage from an overhead line. The overhead line connects to a power module, which receives the 550V voltage from the overhead line. The power module and a pre-charging module 6 then provide 24V control power to the locomotive while simultaneously charging the locomotive battery. The lead locomotive is equipped with a No. 1 battery 7 and a No. 2 battery 8. The battery equalizer 5 is connected in series with No. 1 battery 7 and No. 2 battery 8. Figure 2 , Figure 3As shown, the battery equalizer 5 can compensate the batteries in both directions. When the voltage difference between the series-connected batteries exceeds 10 millivolts, the battery equalizer 5 starts to work, eventually balancing the batteries. The battery equalizer 5 can be connected to the series-connected batteries for a long time, thus automatically maintaining the battery balance.

[0024] When following the towing vehicle, the pantograph remains lowered, and the vehicle moves alongside the towing vehicle. A generator charging system is installed at an appropriate location on the rear vehicle. The generator charging system includes a generator 1 and a connecting belt 2. The generator 1 is connected to the locomotive motor 3 of the rear vehicle via the connecting belt 2. Specifically, the motor bearing pulley of the rear vehicle motor is connected to the pulley of the generator 1 via the connecting belt 2. Figure 1 As shown. Connect generator 1 to either battery 7 (size 1) or battery 8 (size 2) for charging.

[0025] Generator 1 is installed at a suitable position on the rear of the locomotive body, and the pulley of generator 1 is connected to the pulley of the motor via a belt. When the locomotive is running, the power module and pre-charging module 6 provide 24V control power to the locomotive while simultaneously charging the locomotive battery. Simultaneously, when the rear locomotive lowers its pantograph to follow the preceding locomotive, the rear locomotive wheels 4 rotate, driving the motor. The pulley at the motor bearing is connected to the pulley of generator 1, and generator 1 rotates at high speed, converting kinetic energy into electrical energy. In the pantograph-lowered state, the 24V power generated by generator 1 directly provides a stable operating voltage for the locomotive's electrical components while simultaneously charging the locomotive battery. A battery equalizer 5 is added between the two batteries to compensate for the batteries in both directions. When the voltage difference between the series-connected batteries exceeds 10 millivolts, the battery equalizer 5 starts working, eventually balancing the batteries. This prevents one battery from becoming unloaded or having insufficient voltage during use, which could affect the normal operation of the electrical components.

[0026] Finally, it should be noted that in this document, relationships such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "include," "contain," or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0027] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0028] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A variable frequency locomotive with automatic charging and charge-discharge balancing, characterized in that, include: The locomotive body, generator charging system, and battery equalizer are included. The locomotive body has a No. 1 battery and a No. 2 battery installed on the front of the locomotive body. The battery equalizer is connected in series with the No. 1 battery and the No. 2 battery. The generator charging system includes a generator and a connecting belt. The generator is connected to the rear motor of the locomotive body via the connecting belt, and the generator is connected to either the No. 1 battery or the No. 2 battery for battery charging.

2. The variable frequency locomotive with automatic charging and charge-discharge equalization according to claim 1, characterized in that, The motor bearing pulley of the rear vehicle motor is connected to the pulley of the generator via the connecting belt.

3. The variable frequency locomotive with automatic charging and charge-discharge equalization according to claim 1, characterized in that, The No. 1 battery and the No. 2 battery are connected to a power module and a pre-charge module.

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