New energy locomotive multi-gun multi-power battery charging system

Abstract

The invention discloses a multi-gun multi-power battery charging system for a new energy locomotive, the charging system comprises a main circuit and a control circuit, the main circuit comprises a plurality of charging guns and power batteries, the output ends of the charging guns are connected in parallel to a direct current loop and supply power to the direct current loop, and the power batteries are connected to the direct current loop through DC / DC modules. The DC / DC module completes charging and discharging control of each branch power battery; the control circuit comprises a locomotive microcomputer controller TCMS, each branch power battery management system BMS, a charging gun and a DC / DC module, the locomotive microcomputer controller TCMS communicates with each branch power battery management system BMS and the DC / DC module through the Ethernet TRDP, and control information interaction is achieved; and the locomotive microcomputer controller TCMS is communicated with the charging gun through a CAN (Controller Area Network) to realize control information interaction. According to the invention, the technical problem of multi-branch power battery and multi-gun high-power synchronous charging is solved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of rail transit, and particularly relates to a multi-gun multi-power battery charging system for a new energy locomotive. BACKGROUND

[0002] With the gradual elimination of old diesel locomotives, the demand for new energy locomotives is expanding year by year. In the application scenarios of high power and long endurance, the demand for battery capacity is becoming larger and larger, and the demand for charging power is also becoming larger and larger. Single-gun single-branch charging cannot meet the application demand of fast charging of the locomotive. SUMMARY

[0003] The application aims to overcome the problems of the prior art and discloses a multi-gun multi-power battery charging system for a new energy locomotive, which solves the technical problem of multi-branch power battery and multi-gun high-power synchronous charging.

[0004] The application aims to achieve the above-mentioned purpose through the following technical scheme. A multi-gun multi-power battery charging system for a new energy locomotive, the charging system comprising: a main circuit and a control circuit, The main circuit comprises: a plurality of charging guns and power batteries, the output ends of each charging gun being connected in parallel to a direct current loop to supply power to the direct current loop, and each power battery being connected to the direct current loop through a DC / DC module to complete the charging and discharging control of each branch power battery by the DC / DC module; The control circuit comprises: a locomotive microcomputer controller TCMS, a branch power battery management system BMS, a charging gun and a DC / DC module, the locomotive microcomputer controller TCMS being in communication with each branch power battery management system BMS and the DC / DC module through Ethernet TRDP to realize the exchange of control information, and the locomotive microcomputer controller TCMS being in communication with the charging gun through CAN to realize the exchange of control information.

[0005] According to a preferred embodiment, when the locomotive needs to be charged, a plurality of charging guns are selected according to the needs, and after each charging gun is connected to the direct current loop, the control circuit of the locomotive, The locomotive microcomputer system TCMS is in communication connection with each power battery management system BMS, the locomotive microcomputer system TCMS judges the state of the power battery according to the state information of the BMS, removes the faulty branch, and then according to the preset control strategy, each branch power battery is put into the direct current loop through the DC / DC module.

[0006] According to a preferred embodiment, after the power battery is put into, the locomotive microcomputer system TCMS starts to establish communication with the connected charging gun and judges the state of the charging gun, and removes the faulty charging gun.

[0007] According to a preferred embodiment, when the TCMS establishes a communication connection with the charging gun, the charging instruction is issued to the charging gun according to a preset strategy, and each charging gun outputs direct current to the direct current loop according to the charging instruction and adaptively matches the charging current.

[0008] According to a preferred embodiment, when the charging gun is in stable operation, the locomotive microcomputer system TCMS issues a control instruction to the related DC / DC module according to the characteristics of each branch power battery and the charging capacity of the charging gun to control the charging power of each branch, and the power batteries in each branch are synchronously charged.

[0009] According to a preferred embodiment, the locomotive microcomputer system TCMS performs real-time monitoring on the charging gun and the power battery, and removes the faulty equipment when a preset abnormal working condition occurs.

[0010] According to a preferred embodiment, when the power battery in a certain branch is fully charged, the locomotive microcomputer system TCMS automatically removes the corresponding branch power battery, and distributes the excess power to the branch that is not fully charged according to the state of the remaining power battery, or the locomotive microcomputer system TCMS controls each charging gun to automatically match the charging power according to the demand.

[0011] The foregoing main scheme of the present application and each further selected scheme can be freely combined to form multiple schemes, which are all the schemes that can be adopted and claimed by the present application. Those skilled in the art can understand that there are multiple combinations according to the existing technology and common knowledge after understanding the schemes of the present application, which are all the technical schemes claimed by the present application, and are not listed here.

[0012] Advantages of the present application: In the present application, multiple guns directly output to the intermediate direct current loop, the TCMS controls multiple charging guns to automatically match the intermediate direct current voltage, adaptively outputs the current according to the demand of the power battery, and meets the demand of multiple-gun high-power charging. Meanwhile, each power battery branch is not charged by a single gun, the charging current is controlled by an independent DC / DC, the purpose of synchronous charging is achieved, the branch that is fully charged can be automatically cut off, the number of working charging guns remains unchanged, the remaining branches can match larger charging power, and fast full charging is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a topological structure schematic diagram of the multiple-gun and multiple-power battery charging system of the new energy locomotive of the present application; Figure 2 is a charging method flowchart schematic diagram of the multiple-gun and multiple-power battery charging system of the new energy locomotive of the present application. DETAILED DESCRIPTION

[0014] The above and other advantages and effects of the present application will become readily apparent to those of ordinary skill in the art from the description thereof. The present application may, however, be embodied in many different forms without departing from the spirit thereof and it should be understood that the application is to cover all modifications and changes equally falling within the spirit of the application. It is to be understood that all the features and elements of the embodiments described above can be combined with each other in any manner, without departing from the spirit of the application.

[0015] It should be noted that like numerals and letters refer to like items throughout the drawings, and once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0016] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed during use, and are merely intended to facilitate the description of the present application and simplify the description, and therefore cannot be construed as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be construed as limiting the present application. In addition, the terms "first", "second", "third", and the like are merely used to distinguish the description and cannot be construed as indicating or implying relative importance.

[0017] In addition, the terms "horizontal", "vertical", "overhanging", and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that it is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0018] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "provided", "mounted", "connected", "linked" should be interpreted broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium; can be internal communication of two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0019] In addition, the present application points out that, in the present application, unless a specific structure, connection relationship, positional relationship, power source relationship, etc. is specifically written, the structure, connection relationship, positional relationship, power source relationship, etc. involved in the present application are all known by those skilled in the art on the basis of the prior art, without the need for creative labor.

[0020] Embodiment Reference Figure 1 and Figure 2 As shown in the figure, a new energy locomotive multi-gun multi-power battery charging system is shown, the charging system comprises: a main circuit and a control circuit, the main circuit is a charging loop, and the control circuit is a control loop.

[0021] Preferably, the main circuit comprises: a plurality of charging guns and power batteries, the output end of each charging gun is connected in parallel to a DC loop to supply power to the DC loop, and each power battery is connected to the DC loop through a DC / DC module, and the charging and discharging control of each branch power battery is completed by the DC / DC module.

[0022] Preferably, the control circuit comprises: a locomotive microcomputer controller TCMS, a branch power battery management system BMS, a charging gun, and a DC / DC module, the locomotive microcomputer controller TCMS communicates with each branch power battery management system BMS and the DC / DC module through Ethernet TRDP to realize control information interaction; the locomotive microcomputer controller TCMS communicates with the charging gun through CAN to realize control information interaction.

[0023] Preferably, when the locomotive needs to be charged, a plurality of charging guns are selected according to needs, and after each charging gun is connected to the DC loop, the control circuit on the locomotive is controlled.

[0024] The locomotive microcomputer system TCMS and each power battery management system BMS are communicatively connected, the locomotive microcomputer system TCMS judges the state of the power battery according to the state information of the BMS, removes the faulty branch, and then controls each branch power battery to be put into according to a preset control strategy and connected to the DC loop through the DC / DC module.

[0025] Preferably, after the power battery is put into, the locomotive microcomputer system TCMS starts to establish communication with the connected charging gun and judges the state of the charging gun, and removes the faulty charging gun.

[0026] Further, when the TCMS and the charging gun are communicatively connected, a charging instruction is issued to the charging gun according to a preset strategy, each charging gun outputs DC power to the DC loop according to the charging instruction, and adaptively matches the charging current.

[0027] Preferably, when the charging gun is working stably, the locomotive microcomputer system TCMS issues a control instruction to the related DC / DC module according to the characteristics of each branch power battery and the charging capacity of the charging gun, controls the charging power of each branch, and synchronously charges each branch power battery.

[0028] Preferably, the locomotive microcomputer system TCMS monitors the states of the charging gun and the power battery in real time, and removes the faulty equipment when a preset abnormal working condition occurs.

[0029] Preferably, when a branch's power battery is fully charged, the locomotive's TCMS automatically disconnects the corresponding branch's power battery and allocates excess power to the incompletely charged branches based on the remaining power battery status, allowing the remaining branches to charge faster. Charging ends once each branch is fully charged. Alternatively, the locomotive's TCMS controls each charging gun to automatically match the charging power according to demand.

[0030] In this application, multiple charging guns directly output to the intermediate DC circuit. The TCMS controls the multiple charging guns to automatically match the intermediate DC voltage and adaptively output current according to the power battery demand, so as to meet the demand for high-power charging of multiple guns. At the same time, each power battery branch is not charged by a single gun. The charging current is controlled by an independent DC / DC converter to achieve synchronous charging. The fully charged branch can be automatically cut off, the number of working charging guns remains unchanged, and the remaining branches can be matched with a larger charging power to achieve rapid charging.

[0031] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A multi-gun, multi-power battery charging system for new energy locomotives, characterized in that, The charging system includes: a main circuit and a control circuit. The main circuit includes: several charging guns and power batteries. The output of each charging gun is connected in parallel to the DC circuit to supply power to the DC circuit. Each power battery is connected to the DC circuit through a DC / DC module, and the DC / DC module completes the charging and discharging control of each branch power battery. The control circuit includes: a locomotive microcomputer controller (TCMS), a branch battery management system (BMS), a charging gun, and a DC / DC module. The locomotive microcomputer controller (TCMS) communicates with the branch battery management systems (BMS) and the DC / DC module via Ethernet TRDP to achieve control information exchange; the locomotive microcomputer controller (TCMS) communicates with the charging gun via CAN to achieve control information exchange.

2. The multi-gun multi-power battery charging system for new energy locomotives as described in claim 1, characterized in that, When the locomotive needs charging, several charging guns are connected as needed. After each charging gun is connected to the DC circuit, the locomotive's control circuit... The locomotive microcomputer system TCMS establishes a communication connection with each power battery management system (BMS). The locomotive microcomputer system TCMS judges the power battery status based on the BMS status information, cuts off the faulty branch, and then controls the braking power batteries of each branch to be put into operation according to the preset control strategy, and connects to the DC circuit through the DC / DC module.

3. The multi-gun multi-power battery charging system for new energy locomotives as described in claim 2, characterized in that, After the power battery is put into operation, the locomotive's TCMS microcomputer system begins to establish communication with the connected charging gun, determine the status of the charging gun, and disconnect the faulty charging gun.

4. The multi-gun multi-power battery charging system for new energy locomotives as described in claim 3, characterized in that, Once the TCMS establishes a communication connection with the charging gun, it sends a charging command to the charging gun according to a preset strategy. Each charging gun then outputs DC power to the DC circuit according to the charging command and adaptively matches the charging current.

5. The multi-gun multi-power battery charging system for new energy locomotives as described in claim 4, characterized in that, Once the charging gun is operating stably, the locomotive microcomputer system (TCMS) sends control commands to the relevant DC / DC modules based on the characteristics of each branch power battery and the charging capacity of the charging gun, thereby controlling the charging power of each branch and enabling the power batteries of each branch to charge synchronously.

6. The multi-gun multi-power battery charging system for new energy locomotives as described in claim 5, characterized in that, The locomotive microcomputer system TCMS monitors the status of the charging gun and power battery in real time, and disconnects faulty equipment when preset abnormal operating conditions occur.

7. The multi-gun multi-power battery charging system for new energy locomotives as described in claim 5, characterized in that, When a branch battery is fully charged, the locomotive microcomputer system TCMS automatically disconnects the corresponding branch battery and allocates excess power to the uncharged branch according to the status of the remaining battery. Alternatively, the locomotive microcomputer system TCMS controls each charging gun to automatically match the charging power according to demand.

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