All-in-one control cabinet and control system of dumper

Abstract

The invention discloses a dumper all-in-one control cabinet and a control system. The interior of the control cabinet body is divided into three cavities, the PDU function units are arranged at the bottom of the cabinet body, relays in the PDU function units are connected through copper bars, and the PDU function units are connected to the high-voltage positive bus and the high-voltage negative bus through the copper bars; the main motor controller, the hydraulic motor controller, the high-voltage power supply and the DCDC function unit are arranged in the middle of the cabinet body and are connected with the high-voltage positive bus and the high-voltage negative bus through leads; the BMS and the power VCU are arranged on the upper portion of the cabinet body, and the BMS and the power VCU are connected to a high-voltage battery of the vehicle through the control connector; a cooling system heat exchanger is arranged at the top of the cabinet body and connected to equipment in the cabinet body through a water pipe, all equipment in the cabinet body is cooled intensively, and the vehicle does not need to be provided with water pipes and water pumps.

Description

Technical Field

[0001] The invention belongs to the technical field of new energy mining dump trucks, and in particular relates to an all-in-one control cabinet and control system for a dump truck. Background Art

[0002] In recent years, as battery technology and electric drive technology have become increasingly mature, the traction braking performance has become more and more superior to mechanical transmission, and the types of pure electric drive mining vehicles are increasing. However, they are generally used in small tonnage mining vehicles with low power and low voltage.

[0003] Existing 100-ton rigid dump trucks are generally driven by mechanical transmission or diesel generators. 100-ton rigid dump trucks have the characteristics of high power, long working time, and high starting traction requirements, so multiple battery packs are needed in parallel to provide power. At the same time, the motor driver is required to be small in size, high in power density, more perfect in control performance, and lower in operating and maintenance costs. In addition, the country's carbon emission management is becoming increasingly strict, and in the mining field, the desire for pure electric drive systems is becoming more and more urgent.

[0004] The existing dump truck control system generally adopts a distributed layout solution because of its large power. The PDU box, main motor controller, hydraulic motor controller, high-voltage power supply, and DCDC functional unit are all independent devices. The electrical parts between the devices are connected by wires; the main motor controller, hydraulic motor controller, high-voltage power supply, DCDC functional unit, and the radiators of the equipment are connected by water pipes and finally connected to the heat exchanger for heat dissipation. The vehicle layout is difficult, and the laying of wires and water pipes is also required, which is very inconvenient for design and maintenance. Summary of the invention

[0005] The purpose of the present invention is to provide an all-in-one control system and control cabinet for a dump truck to solve the problem of equipment dispersion during the electrification process of new energy dump trucks. In the prior art, especially for high-power new energy dump trucks, the dispersion of equipment has brought about an extremely tight space problem. It is necessary to integrate the main motor controller, hydraulic motor controller, PDU, cooling system, DCDC, BMS, power VCU, etc. required for new energy dump trucks together; and at the same time, centralized cooling is carried out, and the vehicle does not need to add water pipes and water pumps.

[0006] In order to achieve the purpose of the present invention, the present invention discloses an all-in-one control cabinet for a dump truck. The inner part of the control cabinet is divided into three chambers. The PDU functional unit is placed at the bottom of the cabinet. The relay inside the PDU functional unit is connected with a copper busbar, and the PDU functional unit is connected to a high-voltage positive busbar and a high-voltage negative busbar with a copper busbar; a main motor controller, a hydraulic motor controller, a high-voltage power supply, and a DCDC functional unit are placed in the middle of the cabinet and are all connected to the high-voltage positive busbar and the high-voltage negative busbar with wires; a BMS and a power VCU are placed in the upper part of the cabinet, and the BMS and the power VCU are connected to the high-voltage battery of the vehicle through a control connector; a cooling system heat exchanger is placed on the top of the cabinet and is connected to the internal equipment of the cabinet through a water pipe. All equipment in the cabinet is centrally cooled, and the vehicle does not need to be equipped with water pipes and water pumps.

[0007] Furthermore, the PDU functional unit includes a charging relay module, a high-voltage input module and a battery heating module; the charging relay module includes four relays and two voltage sensors, the 1# charging port positive line and the 2# charging port positive line of the dump truck are connected to the first positive relay positive end and the first voltage sensor positive end of the charging relay module, and the negative end of the first positive relay is connected to the high-voltage positive bus; the 1# charging port negative line and the 2# charging port negative line of the dump truck are connected to the first negative relay negative end and the first voltage sensor negative end of the charging relay module, and the positive end of the first negative relay is connected to the high-voltage negative bus; the 3# charging port positive line and the 4# charging port positive line of the dump truck are connected to the second positive relay positive end and the second voltage sensor positive end of the charging relay module, and the negative end of the second positive relay is connected to the high-voltage positive bus; the 3# charging port negative line and the 4# charging port negative line of the dump truck are connected To the negative end of the second negative relay of the charging relay module and the negative end of the second voltage sensor of the charging relay module, the positive end of the second negative relay is connected to the high-voltage negative bus; the high-voltage input module includes MSD, a current sensor, and a main negative relay. The positive end of the high-voltage battery of the dump truck is connected to end 1 of the MSD, and end 2 of the MSD is connected to the high-voltage positive bus; the negative end of the high-voltage battery of the dump truck passes through the current sensor and is connected to the negative end of the main negative relay, and the positive end of the main negative relay is connected to the high-voltage negative bus; the battery heating module includes two heating relays, a fuse, and a current sensor. One end of the fuse is connected to the high-voltage positive bus, and the other end of the fuse is connected to the positive end of the heating positive relay. The negative end of the heating positive relay is connected to the dump truck's high-voltage battery heating positive interface; the dump truck's high-voltage battery heating negative interface is connected to the negative end of the heating negative relay, and the positive end of the heating negative relay is connected to the high-voltage negative bus through the current sensor.

[0008] Furthermore, the main motor controller includes a pre-charging module, an inverter module, a supporting capacitor, a control board, a voltage sensor, and a current sensor; the high-voltage positive bus is connected to the pre-charging module, and the pre-charging module connects the high-voltage positive bus to the positive end of the supporting capacitor through control, and the negative end of the supporting capacitor is connected to the high-voltage negative bus, and the supporting capacitor is connected to the inverter module; the inverter module includes six high-power IGBTs, which are controlled by the control board, and the voltage sensor is connected to the supporting capacitor to measure the DC voltage; the current sensor is connected to the UVW output end of the inverter module to measure the output current.

[0009] Furthermore, the hydraulic motor controller is DC-connected to the high-voltage positive bus and the high-voltage negative bus; the high-voltage power supply is DC-connected to the high-voltage positive bus and the high-voltage negative bus; and the output end of the high-voltage power supply is connected to the high-voltage side of the DCDC functional unit.

[0010] Furthermore, the cooling system connects the radiator water circuits of the hydraulic motor controller, high-voltage power supply, and DCDC functional unit in series. The series water circuit is connected in parallel with the radiator water circuit of the main motor controller, and then connected to the heat exchanger of the cooling system for centralized cooling. The heat exchanger is placed on the top of the cabinet; the cooling system heat exchanger has its own fan for heat dissipation.

[0011] Furthermore, the PDU functional unit is externally connected to the vehicle's high-voltage battery and charging port through a Gland; the main motor controller is externally connected to the vehicle's main motor through a Gland; the hydraulic motor controller is externally connected to the vehicle's hydraulic motor through a Gland; the high-voltage power supply is connected to the DCDC functional unit through a wire; the DCDC functional unit is connected to the vehicle's control battery through a Gland; the power VCU is connected to the main motor controller, hydraulic motor controller, high-voltage power supply, DCDC functional unit, and cooling system through the CAN bus.

[0012] Furthermore, the cabinet is made of sheet metal; the first side of the outside of the cabinet is provided with a BMS interface, a vehicle control interface, a charging control interface, a battery heating interface, an air conditioning power supply interface, and a grounding interface; the BMS interface is connected to the BMS; the vehicle control interface is connected to the power VCU and the main motor controller; the charging control interface is connected to the power VCU; the battery heating interface and the air conditioning power supply interface are connected to the output end of the high-voltage power supply; and the grounding interface is connected to the vehicle body grounding point.

[0013] Furthermore, a main motor connection gland, a high-voltage battery connection gland, a charging port connection gland, a control battery connection gland, and a hydraulic motor connection gland are provided on the second side outside the cabinet; the UVW port of the main motor controller is connected to the main motor of the vehicle through the main motor connection gland; the UVW port of the hydraulic motor controller is connected to the hydraulic motor of the vehicle through the hydraulic motor connection gland; the MSD and the main negative relay of the PDU functional unit are connected to the high-voltage battery of the vehicle through the high-voltage battery connection gland; the charging relay of the PDU functional unit is connected to the vehicle charging port through the charging port connection gland; the output end of the DCDC functional unit is connected to the vehicle control battery through the control battery connection gland.

[0014] In order to achieve the purpose of the present invention, the present invention also discloses an all-in-one control system for a dump truck, including a main motor controller, a hydraulic motor controller, a high-voltage power supply, a PDU functional unit, a DCDC functional unit, a BMS, a power VCU, and a cooling system. The PDU functional unit outputs a DC bus, and the inputs of the three devices, the main motor controller, the hydraulic motor controller, and the high-voltage power supply, are all provided by the DC bus, and the output of the high-voltage power supply is connected to the input of the DCDC functional unit. The power VCU is responsible for the control of the PDU functional unit, the BMS is used for high-voltage battery management, and the cooling system is used for cooling all equipment.

[0015] Compared with the prior art, the significant progress of the present invention is that the present invention places the PDU functional unit, main motor controller, hydraulic motor controller, high-voltage power supply, DCDC functional unit, BMS, power VCU, and cooling system necessary for vehicle operation in one cabinet for centralized placement and centralized cooling. There is no need to install multiple devices on the vehicle, nor is there any need to lay interconnecting wires and water pipes between the devices, which greatly saves vehicle space and improves the maintainability of the equipment.

[0016] In order to more clearly illustrate the functional characteristics and structural parameters of the present invention, further description is given below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 It is a principle block diagram of the present invention;

[0019] Figure 2 It is a principle block diagram of the present invention;

[0020] Figure 3 It is the electrical schematic diagram of the present invention;

[0021] Figure 4 It is a schematic diagram of the structure of the main motor controller of the present invention;

[0022] Figure 5 is a front view of the driving module of the present invention;

[0023] Figure 6 is a side view of the drive module of the present invention;

[0024] Figure 7 is a top view of the driving module of the present invention;

[0025] Figure 8 This is a front view of the IGBT inverter module of the present invention;

[0026] Fig. 9 is a front view of a relay assembly of the present invention;

[0027] Fig.10 is an assembly diagram of a relay assembly of the present invention;

[0028] Fig.11 The cabinet assembly of the present invention Figure 1 ;

[0029] Fig.12 The cabinet assembly of the present invention Figure 2 ;

[0030] Fig.13 This is a schematic diagram of the external interface of the cabinet of the present invention;

[0031] Fig.14 This is a schematic diagram of the external interface of the cabinet of the present invention;

[0032] Fig.15 Shown is a structural diagram of the water cooling system;

[0033] The reference numerals in the figure are: 1-PDU functional unit, 2-main motor controller, 3-hydraulic motor controller, 4-high voltage power supply, 5-DCDC functional unit, 6-cooling system, 7-BMS, 8-power VCU, 9-drive module, 10-relay assembly, 11-control board, 12-water cooling plate, 13-low-sensitivity busbar, 14-support capacitor, 15-IGBT drive board, 16-IGBT adapter board, 17-IGBT, 18-temperature sensor, 19-discharge resistor, 20-wire holder, 21-wire rod, 22-screw, 23-wire rod, 24-mounting plate, 25-voltage sensor, 26-insulator, 27-current sensor, 28-copper busbar, 29-copper busbar, 30-main relay, 31-pre-charge resistor, 32-pre-charge relay, 33-current sensor, 34-tie rod, 35-resistance mounting plate, 36-hexagonal copper column, 71-BMS interface, 72-vehicle control interface, 73-battery heating interface, 74-grounding interface, 75-charging control interface, 76-air conditioning power supply interface, 77-main motor and charging high-voltage interface, 78-high-voltage battery interface, 79-hydraulic motor high-voltage interface, 81-IGBT inverter module water cooling plate, 82-heat exchanger, 83-expansion water tank, 84-water cooling controller, 85-hydraulic motor controller water cooling plate, 86-high-voltage power supply water cooling plate, 87-electronic water pump, 88-drain port, 89-DCDC water cooling plate. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0035] like Figure 1 As shown, the present invention integrates the PDU functional unit, the main motor controller, the hydraulic motor controller, the high-voltage power supply, the DCDC functional unit, the cooling system, the BMS, and the power VCU in the cabinet.

[0036] like Figure 2 As shown, the PDU functional unit of the present invention is externally connected to the charging interface, high-voltage battery, and battery heating, and internally connected to the main motor controller, hydraulic motor controller, and high-voltage power supply. The main motor controller outputs to the main motor of the vehicle, the hydraulic motor controller outputs to the hydraulic motor, the high-voltage power supply outputs to the DCDC functional unit, and the DCDC functional unit outputs to the control battery. The power VCU is responsible for controlling the internal relays of the PDU functional unit, the cooling unit is used for system cooling, and the BMS is used for high-voltage battery information monitoring.

[0037] like Figure 3 As shown, the PDU functional unit of the present invention connects the charging interface, the high-voltage battery, and the heating interface to the high-voltage positive bus and the high-voltage negative bus through various internal relays. The high-voltage positive bus and the high-voltage negative bus then supply power to the main motor controller, the hydraulic motor controller, and the high-voltage power supply. The high-voltage power supply output supplies power to the DCDC functional unit.

[0038] like Figure 3As shown, the PDU functional unit includes a charging relay module, a high-voltage input module, and a battery heating module; the charging relay module includes 4 relays and 2 voltage sensors, and the positive end of the charging port 1 (CHAR1+) and the positive end of the charging port 2 (CHAR2+) of the dump truck are connected to the positive end of the first positive relay (KMBC1P) of the charging relay module and the positive end of the first voltage sensor (TVCH1) of the charging relay module, and the negative end of the first positive relay (KMBC1P) is connected to the high-voltage positive bus; the negative end of the charging port 1 (CHAR1-) and the negative end of the charging port 2 (CHAR2-) of the dump truck are connected to the negative end of the first negative relay (KMBC1N) of the charging relay module and the negative end of the first voltage sensor (TVCH1) of the charging relay module , the positive end of the first negative relay (KMBC1N) is connected to the high-voltage negative bus; the positive end of the charging port 3 (CHAR3+) and the positive end of the charging port 4 (CHAR4+) of the dump truck are connected to the positive end of the second positive relay (KMBC2P) of the charging relay module and the positive end of the second voltage sensor (TVCH2) of the charging relay module, and the negative end of the second positive relay (KMBC2P) is connected to the high-voltage positive bus; the negative end of the charging port 3 (CHAR3-) and the negative end of the charging port 4 (CHAR4-) of the dump truck are connected to the negative end of the second negative relay (KMBC2N) of the charging relay module and the negative end of the second voltage sensor (TVCH2) of the charging relay module, and the positive end of the second negative relay (KMBC2N) is connected to the high-voltage negative bus. The high-voltage input module comprises an MSD, a current sensor, and a main negative relay. The positive terminal of the high-voltage battery of the dump truck (HBAT1+, HBAT2+, and HBAT3+ are short-circuited) is connected to terminal 1 of the MSD (MSD1, MSD2, and MSD3 are connected in parallel), and terminals 2 of the MSD (MSD1, MSD2, and MSD3 are connected in parallel) are connected to the high-voltage positive bus; the negative terminal of the high-voltage battery of the dump truck (HBAT1-, HBAT2-, and HBAT3- are short-circuited) passes through the current sensor (TAB1, TAB2, and TAB3) and is connected to the negative terminal of the main negative relay (KM1), and the positive terminal of the main negative relay (KM1) is connected to the high-voltage negative bus. The battery heating module comprises two heating relays, a fuse, and a current sensor. One end of the fuse (F4) is connected to the high-voltage positive busbar, and the other end of the fuse (F4) is connected to the positive end of the heating positive relay (KMBH1P). The negative end of the heating positive relay (KMBH1P) is connected to the dump truck high-voltage battery heating positive (HEAT+) interface; the dump truck high-voltage battery heating negative (HEAT-) interface is connected to the negative end of the heating negative relay (KMBH1N). The positive end of the heating negative relay (KMBH1N) is connected to the high-voltage negative busbar through the current sensor (TAH1).

[0039] The pre-charging module of the main motor controller is connected to the high-voltage positive bus, the negative pole of the main motor controller is connected to the high-voltage negative bus, and the output of the main motor controller is connected to the main motor interface (U, V, W) through the current sensor. The positive pole of the hydraulic motor controller is connected to the high-voltage positive bus, the negative pole of the hydraulic motor controller is connected to the high-voltage negative bus, and the output of the hydraulic motor controller is connected to the hydraulic motor interface (U1, V1, W1). The positive pole of the high-voltage power supply is connected to the high-voltage positive bus, the negative pole of the high-voltage power supply is connected to the high-voltage negative bus, the output of the high-voltage power supply is connected to the DCDC functional unit, and the output of the DCDC functional unit is connected to the control battery interface (LBAT+, LBAT-).

[0040] like Figure 3 In the main motor controller shown, the pre-charge relay (KM2C) is connected to the high-voltage positive bus, and the other end is connected to the pre-charge resistor (R2C); the main relay (KM2) is connected in parallel with the pre-charge relay (KM2C) and the pre-charge resistor (R2C); the main relay (KM2) is connected to the positive electrode of the support capacitor (C1) through a current sensor (TADC1), the negative electrode of the support capacitor (C2) is directly connected to the high-voltage negative bus, and the voltage sensor (TCDC1) and the discharge resistor (RS1) are connected in parallel to the support capacitor (C1); the support capacitor (C1) is connected to the IGBT module (INV) through a low-inductance busbar, and the output end of the IGBT module is connected to the main motor interface (U, V, W) through current sensors (TA1, TA2).

[0041] like Figure 4 The main motor controller shown is divided into two components, the upper drive module 9 and the relay component 10. The drive module 9 is composed of a supporting capacitor, an IGBT inverter module, and a control board, and the relay component 10 includes a pre-charge relay, a main relay, a pre-charge resistor, a voltage sensor, a current sensor, and corresponding mounting parts; the drive module 9 and the relay component 10 are connected by copper bars and wires.

[0042] like Figure 5-Figure 10The detailed structure of the main motor controller shown in the figure, six IGBTs 17 are installed on the water cooling plate 12. In order to reduce the gap between the IGBTs 17 and the water cooling plate 12, thermal grease is applied during installation to squeeze the air in the middle and improve the heat conduction efficiency; the discharge resistor 19 and the temperature sensor 18 are also installed on the water cooling plate 12; the IGBTs 17 and the supporting capacitor 14 are connected by a low-inductance busbar 13 to reduce the stray inductance between the supporting capacitor 14 and the IGBT 17; three IGBT drive boards 15 are installed on the upper part of the supporting capacitor 14, connected to the IGBT adapter board 16 through wires to control the IGBT 17; the control board 11 is installed in front of the supporting capacitor 14 to control the operation of the main motor controller; the overall structure is compact, the power density is large, and the anti-interference ability is strong. The voltage sensor 25, the DC input current sensor 27, the main relay 30, the pre-charge relay 32, the pre-charge resistor 31, and the AC output current sensor 33 are all placed on the upper part of the mounting plate 24, and the low-voltage line is connected to the corresponding wiring point through the configured tie rod and tie seat. The main motor controller is placed inside the cabinet, and the pre-charging function is integrated inside the main motor controller and controlled by the control board 11 .

[0043] like Figure 11-12 As shown in the cabinet assembly diagram, the PDU functional unit 1 is located at the bottom of the cabinet to facilitate the connection of external high-voltage lines; in the middle, from left to right, are the high-voltage power supply 4, the hydraulic motor controller 3, the main motor controller 2, and a part of the cooling system 6. The DCDC functional unit 5 is located at the rear side of the middle of the cabinet. All of them are heat-generating devices that need to be cooled, which is convenient for centralized cooling; the BMS 7, the power VCU 8, and the control part of the cooling system 6 are all placed on the upper part of the cabinet. This part is all low-voltage control equipment; the heat exchanger part of the cooling system 6 is placed on the top of the cabinet to facilitate ventilation and heat dissipation of the heat exchanger.

[0044] like Figure 13-14 As shown in the cabinet interface diagram, the first side of the cabinet exterior is provided with a BMS interface 71, a vehicle control interface 72, a charging control interface 75, a battery heating interface 73, and an air conditioning power supply interface 76, all of which are output by connectors; the grounding interface 74 adopts M8 and 3 / 8UNC, national standard and American standard double threaded interfaces; the BMS interface is connected to the BMS; the vehicle control interface is connected to the power VCU and the main motor controller; the charging control interface is connected to the power VCU; the battery heating interface and the air conditioning power supply interface are connected to the output end of the high-voltage power supply; the grounding interface is connected to the vehicle body grounding point.

[0045] On the second side outside the cabinet, a main motor and charging high-voltage interface 77, a high-voltage battery interface 78, and a hydraulic motor high-voltage interface 79 are provided, all of which are output by a gland; the UVW port of the main motor controller is connected to the main motor of the vehicle through the main motor connection gland; the UVW port of the hydraulic motor controller is connected to the hydraulic motor of the vehicle through the hydraulic motor connection gland; the MSD and main negative relay of the PDU functional unit are connected to the high-voltage battery of the vehicle through the high-voltage battery connection gland; the charging relay of the PDU functional unit is connected to the vehicle charging port through the charging port connection gland; the output end of the DCDC functional unit is connected to the vehicle control battery through the control battery connection gland.

[0046] like Fig.15 As shown in the cooling system structure diagram, the electronic water pump 87 discharges the coolant from the outlet to the IGBT inverter module water cooling plate 81. The IGBT inverter module water cooling plate 81 requires the largest heat generation, with a design flow of 25L / min, forming a separate water path; the hydraulic motor controller water cooling plate 85, the high-voltage power supply water cooling plate 86, and the DCDC water cooling plate 89 are connected in series, with a design flow of 15L / min, and are connected in parallel with the IGBT inverter module water cooling plate 81; after the two parallel water paths converge through the tee, they enter the top heat exchanger 82, which has two 500W fans integrated inside for cooling; the expansion water tank 83 is responsible for adjusting the water level and exhausting air; the drain port 88 is used for drainage; the water cooling controller 84 adjusts the speed of the electronic water pump 87 and the fan inside the heat exchanger 82 according to the temperature to achieve energy-saving effects. The cooling system centrally cools the heat-generating components inside the cabinet, without the need to lay water pipes on the vehicle, thereby improving the integration of the equipment.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An all-in-one control cabinet for a dump truck, characterized in that: The control cabinet is divided into three chambers. The PDU functional unit is placed at the bottom of the cabinet. The relays inside the PDU functional unit are connected with copper bars. The PDU functional unit is connected to the high-voltage positive bus and high-voltage negative bus with copper bars. The main motor controller, hydraulic motor controller, high-voltage power supply, and DCDC functional unit are placed in the middle of the cabinet and are connected to the high-voltage positive bus and high-voltage negative bus with wires. The BMS and power VCU are placed in the upper part of the cabinet. The BMS and power VCU are connected to the high-voltage battery of the vehicle through the control connector. The cooling system heat exchanger is placed on the top of the cabinet and connected to the internal equipment of the cabinet through water pipes.

2. The all-in-one control cabinet for a dump truck according to claim 1, characterized in that: The PDU functional unit includes a charging relay module, a high-voltage input module and a battery heating module; the charging relay module includes four relays and two voltage sensors. The 1# charging port positive line and the 2# charging port positive line of the dump truck are connected to the positive end of the first positive relay of the charging relay module and the positive end of the first voltage sensor, and the negative end of the first positive relay is connected to the high-voltage positive bus; the 1# charging port negative line and the 2# charging port negative line of the dump truck are connected to the negative end of the first negative relay of the charging relay module and the negative end of the first voltage sensor of the charging relay module, and the positive end of the first negative relay is connected to the high-voltage negative bus; the 3# charging port positive line and the 4# charging port positive line of the dump truck are connected to the positive end of the second positive relay of the charging relay module and the positive end of the second voltage sensor of the charging relay module, and the negative end of the second positive relay is connected to the high-voltage positive bus; the 3# charging port negative line and the 4# charging port negative line of the dump truck are connected to the second negative relay of the charging relay module. The negative end of the relay and the negative end of the second voltage sensor of the charging relay module, and the positive end of the second negative relay are connected to the high-voltage negative bus; the high-voltage input module includes an MSD, a current sensor, and a main negative relay. The positive end of the high-voltage battery of the dump truck is connected to end 1 of the MSD, and end 2 of the MSD is connected to the high-voltage positive bus; the negative end of the high-voltage battery of the dump truck passes through the current sensor and is connected to the negative end of the main negative relay, and the positive end of the main negative relay is connected to the high-voltage negative bus; the battery heating module includes two heating relays, a fuse, and a current sensor. One end of the fuse is connected to the high-voltage positive bus, and the other end of the fuse is connected to the positive end of the heating positive relay, and the negative end of the heating positive relay is connected to the high-voltage battery heating positive interface of the dump truck; the high-voltage battery heating negative interface of the dump truck is connected to the negative end of the heating negative relay, and the positive end of the heating negative relay is connected to the high-voltage negative bus through the current sensor.

3. The all-in-one control cabinet for a dump truck according to claim 1, characterized in that: The main motor controller comprises a pre-charging module, an inverter module, a supporting capacitor, a control board, a voltage sensor, and a current sensor; the high-voltage positive bus is connected to the pre-charging module, the pre-charging module connects the high-voltage positive bus to the positive end of the supporting capacitor through control, the negative end of the supporting capacitor is connected to the high-voltage negative bus, and the supporting capacitor is connected to the inverter module; The inverter module includes six high-power IGBTs, which are controlled by the control board. The voltage sensor is connected to the support capacitor to measure the DC voltage; the current sensor is connected to the UVW output end of the inverter module to measure the output current.

4. The all-in-one control cabinet for a dump truck according to claim 1, characterized in that: The hydraulic motor controller is DC-connected to the high-voltage positive bus and the high-voltage negative bus; the high-voltage power supply is DC-connected to the high-voltage positive bus and the high-voltage negative bus; the output end of the high-voltage power supply is connected to the high-voltage side of the DCDC functional unit.

5. The all-in-one control cabinet for a dump truck according to claim 1, characterized in that: The cooling system connects the radiator water circuits of the hydraulic motor controller, the high-voltage power supply, and the DCDC functional unit in series, and the series-connected water circuit is connected in parallel with the radiator water circuit of the main motor controller, and then connected to the heat exchanger of the cooling system for centralized cooling. The heat exchanger is placed on the top of the cabinet; the heat exchanger of the cooling system has its own fan for heat dissipation.

6. The all-in-one control cabinet for a dump truck according to claim 1, characterized in that: The PDU functional unit is externally connected to the vehicle's high-voltage battery and charging port through a Gland; the main motor controller is externally connected to the vehicle's main motor through a Gland; the hydraulic motor controller is externally connected to the vehicle's hydraulic motor through a Gland; the high-voltage power supply is connected to the DCDC functional unit through a wire; the DCDC functional unit is connected to the vehicle's control battery through a Gland; the power VCU is connected to the main motor controller, hydraulic motor controller, high-voltage power supply, DCDC functional unit, and cooling system through a CAN bus.

7. The all-in-one control cabinet for a dump truck according to claim 1, characterized in that: The cabinet is made of sheet metal; the first side of the outside of the cabinet is provided with a BMS interface, a vehicle control interface, a charging control interface, a battery heating interface, an air conditioning power supply interface, and a grounding interface; the BMS interface is connected to the BMS; the vehicle control interface is connected to the power VCU and the main motor controller; the charging control interface is connected to the power VCU; the battery heating interface and the air conditioning power supply interface are connected to the output end of the high-voltage power supply; the grounding interface is connected to the vehicle body grounding point.

8. The all-in-one control cabinet for a dump truck according to claim 7, characterized in that: The second side outside the cabinet is provided with a main motor connection gland, a high-voltage battery connection gland, a charging port connection gland, a control battery connection gland, and a hydraulic motor connection gland; the UVW port of the main motor controller is connected to the main motor of the vehicle through the main motor connection gland; the UVW port of the hydraulic motor controller is connected to the hydraulic motor of the vehicle through the hydraulic motor connection gland; the MSD and the main negative relay of the PDU functional unit are connected to the high-voltage battery of the vehicle through the high-voltage battery connection gland; The charging relay of the PDU functional unit is connected to the vehicle charging port through the charging port connection gland; the output end of the DCDC functional unit is connected to the vehicle control battery through the control battery connection gland.

9. An all-in-one control system for a dump truck, the system being based on an all-in-one control cabinet for a dump truck according to any one of claims 1 to 8, characterized in that: It includes main motor controller, hydraulic motor controller, high-voltage power supply, PDU functional unit, DCDC functional unit, BMS, power VCU, and cooling system; the PDU functional unit outputs DC bus, and the inputs of the three devices, main motor controller, hydraulic motor controller, and high-voltage power supply are all provided by the DC bus, and the output of the high-voltage power supply is connected to the input of the DCDC functional unit; the power VCU is responsible for the control of the PDU functional unit, the BMS is used for high-voltage battery management, and the cooling system is used for cooling all equipment.

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