Vehicle-mounted high-integration-level battery box for locomotive

Abstract

The utility model discloses a vehicle-mounted high-integration-level battery box for a locomotive. The battery box comprises a cabinet body assembly, an integrated liquid cooling system, an electric control cabinet, a battery trolley assembly, an in-cabinet battery pack heat dissipation water pipe assembly and an extension arm assembly, the electric control cabinet is fixedly mounted on the cabinet body assembly and is used for supplying power to the whole battery box and performing control protection; the battery trolley assembly is mounted in the cabinet body assembly through the extension arm assembly; the integrated liquid cooling system is fixedly installed on the cabinet body assembly, and the battery pack heat dissipation water pipe assembly in the cabinet is connected with the water inlet end and the water outlet end of the integrated liquid cooling system and used for heat dissipation of the battery box. Compared with the prior art, the modularized trolley is used for installing the batteries and the battery box bodies which are symmetrical left and right are combined in a cabinet; the battery box is simple in structure and convenient to process and install, the processing difficulty and the space requirement for battery box turnover in the transportation process are reduced, more combined cabinet combination arrangement can be achieved on the basis of the structure, and combination can be conducted more flexibly, that is, the battery capacity is increased.

Description

Technical Field

[0001] The utility model belongs to the field of rail transit, and particularly relates to an on-vehicle highly integrated battery box for a locomotive. Background Art

[0002] New energy sources represented by lithium batteries and hydrogen energy have been gradually and widely used in special rail transit vehicles as vehicle power sources to replace traditional fossil fuels, so as to meet the requirements of energy conservation and emission reduction.

[0003] For example, in the case of a traction dispatching vehicle, a diesel generator was previously used for conversion operation. However, for a new, more economical and environmentally friendly vehicle model, a power battery will be used as the power source, directly replacing the diesel generator, achieving cost reduction, noise reduction, and a faster drive response time. As the battery box is the box for installing and monitoring the power battery, it plays a very important role. It is necessary to seriously consider and comprehensively and detailedly design a structure form that can make the battery box compact, easy to maintain, safe and reliable.

[0004] In the conventional structural form, the batteries are arranged vertically and horizontally as a whole structure, which results in too large a spreading size of the batteries in some environments, and when maintaining, the personnel are too far away from the batteries in the middle area, and tools and personnel cannot operate. Content of the Utility Model

[0005] The purpose of the utility model is to provide an on-vehicle highly integrated battery box for a locomotive. Through a structural form of laying batteries in a large area, it is designed into a structure form with two upper and lower layers of monomers, spaced left and right, and modular small cars for installing batteries. And two groups of left and right symmetric battery boxes are used for combined installation in parallel cabinets. This structural form meets the convenience of separate processing and separate assembly, reduces the processing difficulty and the space requirement for the turnover of the battery box during transportation.

[0006] The technical solution for realizing the purpose of the utility model is: an on-vehicle highly integrated battery box for a locomotive, the battery box includes a cabinet body assembly, an integrated liquid cooling system, an electric control cabinet, a battery trolley assembly, a heat dissipation water pipe assembly for the battery pack in the cabinet, and an extension arm assembly; the cabinet body assembly is used for the bearing and support of the whole battery box, the electric control cabinet is fixedly installed on the cabinet body assembly and is used for supplying power and controlling and protecting the whole battery box; the battery trolley assembly is used for bearing the batteries, and the battery trolley assembly is installed in the cabinet body assembly through the extension arm assembly; the integrated liquid cooling system is fixedly installed on the cabinet body assembly, and connects the heat dissipation water pipe assembly for the battery pack in the cabinet to the water inlet end and the water outlet end of the integrated liquid cooling system for dissipating the heat of the battery box.

[0007] Compared with the prior art, the remarkable advantages of the present utility model are as follows: Through the structural form of installing batteries on modular trolleys, and using two groups of symmetric battery boxes on the left and right for combined installation in cabinets; this structural form meets the convenience of separate processing and separate assembly, reduces the processing difficulty and the space requirement for the turnover of battery boxes during transportation, and on the basis of this structure, more combined installations in cabinets can be realized, and the combination can be made more flexibly, that is, the battery capacity can be increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 Overall schematic diagram of the battery box Figure 1 ;

[0009] Figure 2 Overall schematic diagram of the battery box Figure 2 ;

[0010] Figure 3 Schematic diagram of the combined installation of axially symmetric cabinets;

[0011] Figure 4 Schematic diagram of the external water pipe;

[0012] Figure 5 Schematic diagram of the internal water pipe;

[0013] Figure 6 Schematic diagram of the internal layout of the electric control cabinet;

[0014] Figure 7 Schematic diagram of the battery trolley group being pulled out Figure 1 ;

[0015] Figure 8 Schematic diagram of the battery trolley group being pulled out Figure 2 ;

[0016] Figure 9 Schematic diagram of the installation of the extension arm assembly;

[0017] Figure 10 is Figure 9 Enlarged view of area I in

[0018] Figure 11 Stereogram of the extension arm assembly;

[0019] Figure 12 Stereogram of the battery trolley assembly;

[0020] Figure 13 is Figure 12 Enlarged area II in

[0021] Figure 14 Schematic diagram of the forklift lifting the battery group trolley;

[0022] Figure 15 Schematic diagram of the battery box to the vehicle body. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0023] The following further introduces the present utility model in conjunction with the attached Figures 1-15 drawings and specific embodiments. The present utility model provides a highly integrated on-vehicle battery box for locomotives. Through a large-area tiled battery structure, it is designed into a structure form with two layers of monomers up and down, spaced left and right, and modular trolleys installed with batteries. And two groups of left-right symmetric battery boxes are used for combined installation in parallel cabinets; this structure form meets the convenience of separate processing and separate assembly, reduces the processing difficulty and the space requirement for the turnover of the battery box during transportation.

[0024] The highly integrated on-vehicle battery box for locomotives includes a cabinet assembly, an integrated liquid cooling system 2, a lifting beam 3, an electric control cabinet 4, a top parallel cabinet connecting plate 5, a side parallel cabinet connecting plate 6, an MSD assembly 7, a battery trolley assembly 8, a heat dissipation water pipe assembly for the battery pack inside the cabinet, an extension arm assembly 11, a DCDC power module 12, and an expansion water tank 13.

[0025] The cabinet assembly, the cabinet assembly includes a cabinet 1, a top parallel cabinet connecting plate 5, and a side parallel cabinet connecting plate 6;

[0026] The cabinet 1: It is mainly a rectangular tube welded by carbon steel material to form a frame structure. The frame is divided into two layers up and down, spaced left and right; the outside uses a carbon steel plate as the skin, and the skin is connected to the frame through riveting around and local welding, thus forming a cabinet 1 with an IP65 protection level;

[0027] Among them, the cabinet 1 has two axially symmetric structural forms;

[0028] The top parallel cabinet connecting plate 5: It is cut from a carbon steel plate and connects two axially symmetric cabinets 1 through screws; the side parallel cabinet connecting plate 6: It is cut from a carbon steel plate and connects two axially symmetric cabinets 1 through screws;

[0029] The cabinet 1 is provided with mounting feet 1-1, upper fixing blocks 1-2 inside the cabinet, and lower fixing blocks 1-3 inside the cabinet. The cabinet mounting feet 1-1 are fixedly connected to the skin by welding; the cabinet mounting feet 1-1 are formed by cutting a carbon steel plate, bending it, and then intermittently welding the reinforcing ribs on it to form the overall structure of the cabinet mounting feet 1-1; mounting holes are provided on the cabinet mounting feet 1-1 for fixing with an external engineering vehicle.

[0030] The upper fixing blocks 1-2 inside the cabinet and the lower fixing blocks 1-3 inside the cabinet are fixedly installed on the cabinet 1, and the upper fixing blocks 1-2 inside the cabinet and the lower fixing blocks 1-3 inside the cabinet are used to connect the extension arm assembly 11 and the cabinet 1.

[0031] Integrated liquid cooling system 2: Installed on the skin of cabinet 1; This device is an externally purchased component, mainly integrating a heat exchanger, a water pump, a compressor, a cooling fan, and some sensors. It can use coolant, and with the assistance of the water pump, the coolant flows through each battery pack, taking away the heat generated during battery operation. Then, through the forced air cooling form of the cooling fan, the heat passing through the heat exchanger is taken away, completing a heat dissipation cycle process.

[0032] Lifting beam 3: Cut from angle steel, with mounting holes and lifting holes provided on the lifting beam 3, and reinforcing plates are installed by welding. Bolts are installed into the mounting holes to fix the lifting beam 3 in the top area of cabinet 1; It can lift the entire battery box through a lifting rope or steel chain after the cabinets 1 are combined;

[0033] The electrical control cabinet 4 is used to supply power and control protection for the entire battery box. It is cut and bent from carbon steel material and then integrally formed by welding. The electrical control cabinet 4 is connected to the side of cabinet 1 by riveting;

[0034] Inside the electrical control cabinet 4, there are an output terminal assembly 4-1, a BMS master controller 4-2, a fire extinguishing generator 4-3, a connector assembly 4-4, and an electrical control cabinet MSD 4-6; The output terminal assembly 4-1, the BMS master controller 4-2, the fire extinguishing generator 4-3, the connector assembly 4-4, and the electrical control cabinet MSD 4-6 are installed inside the electrical control cabinet 4.

[0035] The output terminal assembly 4-1 includes a contactor and a fuse, which are used to output the output current of the battery pack to another traction auxiliary inverter after protection; The BMS master controller 4-2 is used to collect the monitoring and control signals of the BMS slave controllers 8-3 in the battery pack trolley assembly 8 and then connect to the vehicle end for monitoring and protection; The fire extinguishing generator 4-3 can monitor through the internal smoke and fire detector, upload the status above each battery pack trolley, and can spray perfluoromethylhexanone through the sprinkler head 4-3-1 for fire extinguishing in case of a fire; The connector assembly 4-4 is mainly used to supply power for internal equipment transfer, such as supplying power for the DCDC power module 12; The electrical control cabinet MSD 4-6 is an externally purchased component, installed on the outer side of the electrical control cabinet 4, used to access the main positive terminal of the battery pack, and can achieve the function of cutting off.

[0036] The on-vehicle highly integrated battery box for the locomotive charges the battery through the charging pile 4-5.

[0037] MSD assembly 7: An externally purchased component, set at the front end of each battery pack trolley 8, used to access the main negative terminal of the battery pack and can achieve the function of cutting off. Specifically, when it is necessary to pull out the battery pack trolley 8 for maintenance or battery replacement, the circuit can be manually cut off through this device.

[0038] Battery trolley assembly 8: used to carry batteries; including a battery trolley frame 8-1, batteries 8-2, BMS slave controller 8-3, trolley rollers 8-4, battery combined mounting plate 8-5, axle pins 8-6, and a limit card plate 8-7;

[0039] The battery trolley frame 8-1 is formed by welding a rectangular tube made of carbon steel; the battery 8-2 is a purchased part, which is arranged and installed through a self-made battery merging mounting plate 8-5; the BMS slave controller 8-3 is installed on the battery trolley frame 8-1, which is mainly used to collect and monitor the voltage and temperature of the battery and collect the data into the BMS master controller 4-2; the trolley roller 8-4 is made of stainless steel round steel, and a deep groove ball bearing is installed inside the trolley roller 8-4 by interference fit, and the shaft pin 8-6 cooperates with the deep groove ball bearing, thereby realizing the rotation of the trolley roller 8-4 installed on the battery trolley frame 8 -1 on both sides, with single-sided spacing; the battery merging installation plate 8-5 is cut and bent into shape using carbon steel material. In the flat state, each battery 8-2 is installed by nuts and washers to form an integral state; the axle pin 8-6 is turned and formed by stainless steel round steel, and a groove notch is set on the periphery of one end of the axle pin 8-6; the limiting card plate 8-7 is cut and formed by stainless steel, and is fastened to the upper side of the battery trolley frame 8-1 by screws, and the limiting card plate 8-7 cooperates with the groove notch at the outer end of the axle pin 8-6 to limit the risk of the axle pin 8-6 rotating and falling off along the axial outside.

[0040] The heat dissipation water pipe assembly of the battery pack in the cabinet includes: an in-cabinet battery water outlet pipe assembly 9 and an in-cabinet battery water inlet pipe assembly 10;

[0041] The battery water outlet pipe assembly 9 in the cabinet is installed inside the cabinet body 1, and multiple branch water distribution threaded joints are set to connect the hot water outlet of each battery pack heat sink, and are collected to the total water outlet end of the battery water outlet pipe assembly 9 in the cabinet outside the cabinet body 1. The total water outlet end of the battery water outlet pipe assembly 9 in the cabinet is connected to the water inlet end of the integrated liquid cooling system 2.

[0042] The battery water outlet pipe assembly 9 in the cabinet includes a stainless steel round pipe and an elbow, which are formed by welding. The battery water outlet pipe assembly 9 in the cabinet can be detachably installed on the cabinet body 1.

[0043] The hot water outlet of each battery pack heat sink is connected to the branch on the battery water outlet pipe assembly 9 in the cabinet through a threaded hose, and the total water outlet end of the battery water outlet pipe assembly 9 in the cabinet is connected to the water inlet end of the integrated liquid cooling system 2 through a pagoda joint. In consideration of the tolerance of installation and welding, the pagoda joints are connected through a first rubber hose 9-1, which is locked and sealed with a hose clamp to achieve pipeline connection;

[0044] A pagoda joint is used between the water replenishing end of the integrated liquid cooling system 2 and the expansion tank 13, and the pagoda joints are connected through the second rubber hose 9-2. At the same time, a sealing valve 9-3 is also provided on the water outlet pipe assembly 9;

[0045] The cabinet-internal battery water inlet pipe assembly 10 is composed of a stainless steel round pipe and an elbow, which are formed by welding and are detachably installed inside the cabinet body 1. It is provided with multiple branch water distribution threaded joints to correspondingly connect to the cold water inlets of each battery pack heat dissipation plate; the total water inlet end of the cabinet-internal battery water inlet pipe assembly 10 is aggregated outside the cabinet body 1, and the total water inlet end of the cabinet-internal battery water inlet pipe assembly 10 is connected to the water outlet end of the integrated liquid cooling system 2;

[0046] The cold water inlet of each battery pack heat dissipation plate is connected to the branch on the cabinet-internal battery water inlet pipe assembly 10 through a threaded hose, and the total water inlet end of the cabinet-internal battery water inlet pipe assembly 10 is connected to the water outlet of the integrated liquid cooling system 2 through a pagoda joint. Considering the installation and welding tolerances, the pagoda joints are connected through the third rubber hose 10-1 and locked and sealed with a hose clamp to achieve pipeline connection;

[0047] The extension arm assembly 11 includes an inclined support beam 11-1, a short vertical beam 11-2, a long cross beam 11-3, and a long vertical beam 11-4, all of which are rectangular steel pipes made of carbon steel and are formed by cutting and welding; the inclined support beam 11-1, the short vertical beam 11-2, the long cross beam 11-3, and the long vertical beam 11-4 are fixedly connected;

[0048] The limit bracket 11-7 is formed by welding carbon steel materials and can mainly limit the pulled-out battery trolley assembly 8 to prevent it from detaching from the extension arm; the groove positioning strip 11-8 is cut from stainless steel and is installed on the upper end surface of the long cross beam 11-3 through countersunk head screws. The groove positioning strip 11-8 corresponds to and cooperates with a circle of grooves on the inner side of the outer ring of the trolley roller 8-4 to form a mutual wrapping and limiting effect;

[0049] The upper fixing block 11-5 and the lower fixing block 11-6 are both milled from stainless steel blocks. The upper fixing block 11-5 is fixedly installed at one end of the long cross beam 11-3, and the lower fixing block 11-6 is fixedly installed at one end of the inclined support beam 11-1; the pin 11-9 is made of stainless steel material. The pin 11-9 is used to be inserted into the upper fixing block 11-5 from top to bottom and finally pass through the cabinet-internal upper fixing block 1-2 inside the cabinet body 1. Similarly, the pin 11-9 connects the lower fixing block 11-6 to the corresponding cabinet-internal lower fixing block 1-3 inside the cabinet body 1; thus, the extension arm assembly 11 is assembled with the corresponding installation area inside the cabinet body 1.

[0050] During use, two axially symmetric groups of the extension arm assemblies 11 are arranged in parallel.

[0051] The DC-DC power module 12: An off-the-shelf component, fixedly installed on the cabinet 1, converts the electrical energy provided by the internal battery for powering the integrated liquid cooling system 2, enabling the normal operation of the liquid cooling system.

[0052] The expansion water tank 13: An off-the-shelf component, fixedly installed on the cabinet 1. The expansion water tank 13 stores the coolant and adjusts the volume change in the pipeline of the entire system due to temperature changes in the coolant, thereby realizing liquid replenishment for the entire pipeline or storing part of the liquid with expanded volume due to heat;

[0053] In addition, an air valve cover is provided on the expansion water tank 13 for discharging some air.

[0054] The specific operation steps of the described on-vehicle highly integrated battery box for locomotives are as follows:

[0055] (1) Lift the battery 8-2 into the battery trolley frame 8-1 through a tooling, and then fasten the battery 8-2 to the bottom of the battery trolley frame 8-1 with nuts and washers; then combine the three batteries 8-2 through the combined mounting plate 8-5 to form a fixed form with mutual limitation;

[0056] (2) Install the deep groove ball bearing and the trolley roller 8-4, then insert the axle pin 8-6 from the center of the bearing, and insert the limit card plate 8-7 into the groove notch at the outer end of the axle pin 8-6 for cooperation, and fix the limit card plate 8-7 with screws; finally, install the BMS slave controller 8-3 on the battery trolley frame 8-1 with screws;

[0057] (3) Install the output terminal assembly 4-1, BMS master controller 4-2, fire extinguishing generator 4-3, connector assembly 4-4, and electrical cabinet MSD 4-6 in the electrical cabinet 4 (axisymmetric component) on the electrical cabinet 4, fasten them with bolts, and achieve corresponding connection and protection functions through wires;

[0058] (4) Install the in-cabinet battery outlet water pipe assembly 9 and the in-cabinet battery inlet water pipe assembly 10 in the corresponding areas inside the cabinet 1 with bolts; similarly, install the smoke and fire detector and the sprinkler head 4-3-1 in the upper area of each battery trolley assembly 8; then install the extension arm assembly 11 (axisymmetric component), insert the pin 11-9 from top to bottom into the upper fixing block 11-5, and finally pass through the in-cabinet upper fixing block 1-2 at the corresponding splicing position inside the cabinet 1. Connect the lower fixing block 11-6 and the in-cabinet lower fixing block 1-3 corresponding to the inside of the cabinet with the pin 11-9 in the same operation method, thereby completing the fixation of the extension arm assembly 11 (axisymmetric component);

[0059] (5) Lift the battery cart assembly 8 with a forklift and then place it on the extension arm assembly 11 (axisymmetric part). Engage a groove on the inner side of the outer ring of the cart roller 8-4 with the groove positioning strip 11-8, thus forming a mutually wrapped state. Then, manually push the battery cart assembly 8, and the cart will roll along the groove positioning strip 11-8 to the bottom inside the cabinet 1. Finally, fix it inside the cabinet 1 with bolts. After installing a set of battery carts, the extension arm assembly 11 (axisymmetric part) can be lifted as a whole manually, then disengaged from inside the cabinet 1 and taken out. Then, install the remaining cart assemblies 8 in the same way in other corresponding areas (there are a total of 4 areas, up, down, left, and right, in the cabinet in this embodiment), completing the installation of the remaining three groups of battery cart assemblies 8. And at their corresponding positions, complete the connection of the water circuit and electricity. If the battery cart assembly 8 is to be taken out, the operation process is reversed. First, open the seal valve 9-3 at the end of the battery outlet water pipe assembly 9 (axisymmetric part) extending out of the cabinet 1 to drain the coolant. Secondly, loosen the branch water pipe, wire, and the front MSD component 7, then loosen the cart fastening bolts, and then pull the cart to the limit bracket 11-7 through the pre-installed extension arm assembly 11 (axisymmetric part) and stop. Finally, lift it with a forklift and take it out;

[0060] (6) Install the integrated liquid cooling system 2 (axisymmetric part) on the cabinet 1 (axisymmetric part) with bolts, and then fix the expansion tank 13 on the upper end outside the cabinet 1 with bolts;

[0061] (7) Connect one end of the second rubber hose 9-2 at the water replenishing end of the liquid cooling unit to the lower end of the expansion tank 13 and the other end to the upper end of a section of the battery outlet water pipe assembly 9 (axisymmetric part) extending outside the cabinet. Its lower end is connected to the integrated liquid cooling system 2 through the first rubber hose 9-1 at the water inlet end of the liquid cooling unit. In addition, the port of a section of the battery inlet water pipe assembly 10 (axisymmetric part) extending outside the cabinet is connected to the integrated liquid cooling system 2 through the third rubber hose 10-1 at the water outlet end of the liquid cooling unit. Finally, install the DCDC power module 12 with bolts. Its power supply comes from the connector assembly 4-4 inside the electric control cabinet 4 (axisymmetric part). At the same time, the output end of the DCDC power module 12 supplies power to the integrated liquid cooling system 2. Finally, inject the coolant into the entire pipeline system forcibly through a quick connector. When the water level in the expansion tank 13 exceeds the highest water level scale line, stop injecting the liquid and start the integrated liquid cooling system 2 for circulation. When the liquid level drops, replenish the liquid again until after several circulations and almost all the gas in the internal pipeline is discharged, which means the liquid injection is completed;

[0062] (8) Using fixing bolts, first install two lifting beams 3 in parallel on the outer side of the top of the cabinet body 1. Secondly, through the fixing bolts, connect the top parallel cabinet connecting plate 5 and the side parallel cabinet connecting plate 6 to connect two cabinet bodies 1 (axisymmetric parts) to form a large whole;

[0063] (9) Finally, use a crane to lift the combined complete battery box and place it on the schematic engineering vehicle 14. Fix it by passing bolts through the cabinet body mounting feet 1-1, and then connect it to other equipment and control areas through high-voltage cables and communication lines. Thus, the installation of the entire battery box is completed; after daily vehicle use, to charge the power battery, through the charging pile set in a specific area, use the schematic charging gun 4-5 to charge the battery. The battery boxes that are symmetric about the left and right respectively have a charging gun socket at one place, and two-way simultaneous charging can be realized.

[0064] The described on-vehicle high-integration battery box for a locomotive has a compact overall structure, convenient maintenance, and a highly integrated liquid cooling and heat dissipation system.

Claims

1. A highly integrated battery box for locomotive, characterized in that: The battery box comprises a cabinet assembly, an integrated liquid cooling system (2), an electric control cabinet (4), a battery trolley assembly (8), a heat dissipation water pipe assembly for a battery pack in the cabinet, and an extension arm assembly (11); the cabinet assembly is used to carry and support the entire battery box, the electric control cabinet (4) is fixedly mounted on the cabinet assembly, and is used to supply power and control protection to the entire battery box; the battery trolley assembly (8) is used to carry batteries, and the battery trolley assembly (8) is installed in the cabinet assembly via the extension arm assembly (11); the integrated liquid cooling system (2) is fixedly mounted on the cabinet assembly, and the heat dissipation water pipe assembly for the battery pack in the cabinet is connected to the water inlet and outlet of the integrated liquid cooling system (2) for heat dissipation of the battery box.

2. The locomotive-mounted high-integration battery box according to claim 1, characterized in that: The cabinet assembly comprises a cabinet (1), a top cabinet connection plate (5) and a side cabinet connection plate (6); the cabinet (1) has two axially symmetrical structural forms, and the cabinets (1) are connected to each other via the top cabinet connection plate (5) and the side cabinet connection plate (6).

3. The high-integration battery box for locomotive according to claim 1, characterized in that: The electric control cabinet (4) is provided with an output end component (4-1), a BMS main controller (4-2), a fire extinguishing generator (4-3), a connector component (4-4) and an electric control cabinet MSD (4-6); the output end component (4-1), the BMS main controller (4-2), the fire extinguishing generator (4-3), the connector component (4-4) and the electric control cabinet MSD (4-6) are installed inside the electric control cabinet (4); the output end component (4-1) is used to output the output current of the battery pack to another traction auxiliary converter after protection; the BMS main controller (4-2 ) is used to collect the monitoring and control signals in the battery pack trolley component (8) and then connect it to the vehicle end for monitoring and protection; the fire extinguishing generator (4-3) can monitor and upload the status above each battery pack trolley through the internal smoke and fire probe, and can spray perfluorohexanone through the sprinkler head (4-3-1) to extinguish the fire in the fire state; the connector component (4-4) is mainly used to transfer power to the internal equipment; the electric control cabinet MSD (4-6) is installed on the external side of the electric control cabinet (4) and is used to connect to the main positive terminal of the battery pack to achieve the function of cutting off.

4. The high-integration battery box for locomotive according to claim 3, characterized in that: The battery trolley assembly (8) is used to carry batteries; it includes a battery trolley frame (8-1), batteries (8-2), a BMS slave controller (8-3), trolley rollers (8-4), a battery merging mounting plate (8-5), an axle pin (8-6), and a limit card plate (8-7); the batteries (8-2) are arranged and assembled through a self-made battery merging mounting plate (8-5); the BMS slave controller (8-3) is installed on the battery trolley frame (8-1), and is mainly used to collect and monitor the voltage and temperature of the batteries. The data is collected in the BMS main controller (4-2); a deep groove ball bearing is installed inside the trolley roller (8-4), and the shaft pin (8-6) cooperates with the deep groove ball bearing, thereby realizing that the trolley roller (8-4) is rotatably installed on both sides of the battery trolley frame (8-1); a groove notch is arranged on the periphery of one end of the shaft pin (8-6); a limit card plate (8-7) is installed on the battery trolley frame (8-1) and cooperates with the groove notch at the outer end of the shaft pin (8-6) to limit the shaft pin (8-6) to limit the position.

5. The locomotive-mounted high-integration battery box according to claim 2, characterized in that: The in-cabinet battery heat dissipation water pipe assembly comprises: an in-cabinet battery water outlet pipe assembly (9) and an in-cabinet battery water inlet pipe assembly (10); the in-cabinet battery water outlet pipe assembly (9) and the in-cabinet battery water inlet pipe assembly (10) are installed inside the cabinet body (1); the in-cabinet battery water outlet pipe assembly (9) is provided with a plurality of branch water distribution threaded joints connected to the hot water outlet of each battery group heat dissipation plate, and the hot water outlet is collected to the total water outlet end of the in-cabinet battery water outlet pipe assembly (9) outside the cabinet body (1), and the total water outlet end of the in-cabinet battery water outlet pipe assembly (9) is connected to the water inlet end of the integrated liquid cooling system (2); the in-cabinet battery water inlet pipe assembly (10) is provided with a plurality of branch water distribution threaded joints to correspond to the cold water inlet of each battery group heat dissipation plate; the hot water outlet is collected to the total water inlet end of the in-cabinet battery water inlet pipe assembly (10) outside the cabinet body (1), and the total water inlet end of the in-cabinet battery water inlet pipe assembly (10) is connected to the water outlet end of the integrated liquid cooling system (2).

6. The high-integration battery box for locomotive according to claim 5, characterized in that: The hot water outlet of each battery pack heat sink is connected to the branch of the battery water outlet pipe assembly (9) in the cabinet through a threaded hose, and the total water outlet end of the battery water outlet pipe assembly (9) in the cabinet is connected to the water inlet end of the integrated liquid cooling system (2) through a pagoda joint; the cold water inlet of each battery pack heat sink is connected to the branch of the battery water inlet pipe assembly (10) in the cabinet through a threaded hose, and the total water inlet end of the battery water inlet pipe assembly (10) in the cabinet is connected to the water outlet end of the integrated liquid cooling system (2) through a pagoda joint; and rubber hoses are provided between the pagoda joints for connection.

7. The high-integration battery box for locomotive according to claim 1, characterized in that: The extension arm assembly (11) comprises an oblique support beam (11-1), a short vertical beam (11-2), a long horizontal beam (11-3), and a long vertical beam (11-4); the oblique support beam (11-1), the short vertical beam (11-2), the long horizontal beam (11-3), and the long vertical beam (11-4) are fixedly connected; The limiting bracket (11-7) limits the pulled-out battery trolley assembly (8); the groove positioning strip (11-8) is installed on the long crossbeam (11-3), and the groove positioning strip (11-8) cooperates with the battery trolley assembly (8) to form a mutual wrapping and limiting effect; The upper fixing block (11-5) is fixedly mounted on one end of the long crossbeam (11-3), and the lower fixing block (11-6) is fixedly mounted on one end of the oblique support beam (11-1); the cabinet (1) is connected via a pin (11-9); thereby achieving splicing of the extension arm assembly (11) with the corresponding installation area inside the cabinet (1).

8. The high-integration battery box for locomotive according to claim 1, characterized in that: The battery box further comprises an MSD component (7), which is arranged at the front end of each battery trolley component (8) and is used for connecting to the main negative terminal of the battery pack, so as to realize a cut-off function.

9. The high-integration battery box for locomotive according to claim 1, characterized in that: The battery box also includes a lifting beam (3), which is installed on the top of the cabinet assembly and is used to lift the entire battery box through a lifting rope or a steel chain.

10. The locomotive-mounted high-integration battery box according to claim 1, characterized in that: The battery box further comprises a DCDC power module (12) and an expansion water tank (13); the DCDC power module (12) and the expansion water tank (13) are mounted on the cabinet assembly, the DCDC power module (12) is used to supply power to the integrated liquid cooling system (2) so that the liquid cooling system can operate normally; the expansion water tank (13) is used to store and replenish cooling liquid.

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