Pure-electric battery-changing wide-body mine truck integrated system

Abstract

The utility model discloses a pure electric battery-changing wide-body mine truck integrated system, and relates to the technical field of pure electric mine trucks. The battery replacement base comprises a base body; the quick connector is connected to the top of the base body, and a wire harness connector is connected to the quick connector and used for being in butt joint with a wire harness connector of a quick connector at the bottom of a battery replacement upper frame; the fixing support is connected to the bottom of the base body and used for being connected with a vehicle body; and the plurality of positioning holes are formed in the base body and are connected with positioning pins at the bottom of the battery replacement upper frame. When the base body is connected with the battery replacing upper frame, the positioning pins at the bottom of the battery replacing upper frame are matched with the positioning holes in the base body, the wiring harness connector on the quick connector of the base body can be in butt joint with the wiring harness connector on the quick connector of the battery replacing upper frame, and the quick battery replacing function is achieved through the battery replacing base and the battery replacing upper frame. According to the pure electric mine truck, the energy supplementing time is greatly shortened, and the carrying efficiency of the mine truck is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pure electric mining trucks, in particular to a pure electric battery-swap wide-body mining truck integrated system. Background Art

[0002] See also Figure 1 The structure and principle of the pure electric wide-body mining truck: the shifter, accelerator pedal and brake pedal are all connected to the vehicle controller, the vehicle controller is respectively connected to the drive motor controller and the cab display console, the drive motor controller is respectively connected to the drive motor and PDU, the PDU is respectively connected to the electric steering pump, the air-conditioning compressor motor and the electric air compressor, the battery management system is respectively connected to the cab display console and the power battery, the steering wheel is connected to the electric steering pump, the air-conditioning compressor motor is connected to the cab display console, the drive motor, the gearbox and the drive reduction bridge are connected in sequence, and the tires are connected on both sides of the drive reduction bridge.

[0003] The power battery provides energy for the drive motor of the pure electric mining truck. The electric motor converts the electrical energy of the power supply into mechanical energy, and drives the vehicle through the gearbox, drive reduction bridge and wheels. The drive controller receives the torque or speed signal of the vehicle controller and controls the voltage or current of the drive motor to control the speed and driving force of the vehicle. The electric steering pump provides high-pressure liquid for vehicle turning, drives the extension and retraction of the steering cylinder, and realizes the left and right steering of the vehicle. The electric steering pump is controlled by the vehicle controller and sends operation and speed information to the steering pump. The electric air compressor provides high-pressure gas for vehicle braking, which drives the brake through the dryer, air tank and brake valve to realize vehicle braking.

[0004] In the prior art, the power battery frame of a conventional pure electric mining truck is suspended on both sides of the beam between the front axle and the middle axle. The battery frame is first connected to the beam by bolts, the power battery is pushed into the battery frame, and then the wiring harness and the water cooling system are connected. This structure is suitable for charging, not suitable for battery replacement, and has a long charging time. The charging time varies due to different battery capacities and charging pile powers, generally about 45-60 minutes. For a transportation distance of 3 kilometers, it needs to be charged 4-6 times a day, and the charging time is about 5 hours, which seriously affects the transportation efficiency. Utility Model Content

[0005] In order to solve the problems of the prior art, the utility model provides a battery-swap base and a pure electric battery-swap wide-body mining truck integrated system.

[0006] On the one hand, a battery replacement base is provided, comprising:

[0007] Base body;

[0008] A quick connector is connected to the top of the base body, and a wiring harness connector is connected to the quick connector, which is used to dock with the wiring harness connector of the quick connector at the bottom of the battery replacement upper frame;

[0009] A fixing bracket, connected to the bottom of the base body, and used for connecting with the vehicle body;

[0010] A plurality of positioning holes are opened on the base body and connected to the positioning pins at the bottom of the battery exchange upper frame.

[0011] Furthermore, it also includes:

[0012] A plurality of guide blocks are connected to the top of the base body and are used for positioning when the battery replacement upper frame is docked with the base body.

[0013] Furthermore, it also includes:

[0014] The charging port is connected to the side wall of the base body.

[0015] On the other hand, a pure electric battery-swap wide-body mining truck integrated system is provided, including the battery-swap base and the vehicle body;

[0016] The battery replacement base is connected to the right side platform of the cab of the vehicle body through the fixed bracket.

[0017] Furthermore, the brim of the cargo box of the entire vehicle body is an L-shaped structure, and the brim of the cargo box does not flip over when the battery-changing upper frame is replaced.

[0018] Furthermore, the gap between the cargo box brim and the battery exchange upper frame is 150 mm.

[0019] Furthermore, the front suspension of the vehicle body adopts front oil-gas suspension, and the rear suspension adopts leaf spring balanced suspension.

[0020] Furthermore, the steering system of the vehicle body adopts a full hydraulic steering system.

[0021] Furthermore, the electric drive system, transmission shaft, air pump, battery frame and air tank are arranged in the middle of the chassis of the vehicle body;

[0022] An ATS electronic fan radiator is installed at the front of the engine room of the whole vehicle body, and a shock-absorbing cushion is provided between the radiator and the frame; a high-pressure system and a water heating PTC are installed in the engine room of the whole vehicle body, an air-conditioning compressor, a steering pump, and a filter are installed at the left front part of the frame of the whole vehicle body, and an accumulator is provided at the right front end of the frame of the whole vehicle body to provide hydraulic energy for emergency steering.

[0023] Furthermore, the vehicle body drive adopts a 6x4 structure.

[0024] The beneficial effects of the technical solution provided by the utility model are as follows: a battery swap base is provided in the utility model, a positioning hole and a quick connector are provided on the battery swap base, a positioning pin and a quick connector are connected to the bottom of the battery swap upper frame, when the base body is connected to the battery swap upper frame, the positioning pin at the bottom of the battery swap upper frame cooperates with the positioning hole on the base body to achieve the locking of the battery swap upper frame in the horizontal direction, the wiring harness connector on the quick connector of the base body can be docked with the wiring harness connector on the quick connector at the bottom of the battery swap upper frame, after successful docking, the battery swap upper frame can provide power to the pure electric mining truck, and the fast battery swap function is met through the battery swap base and the battery swap upper frame, the battery swap time is ≦5min, the pure electric mining truck greatly reduces the energy replenishment time and improves the transportation efficiency of the mining truck.

[0025] In addition, the battery swap base is connected to the right platform of the cab through a fixed bracket set at the bottom, and the cargo box brim is set to an L-shaped structure. The cargo box brim is mainly located on the top of the cab. The cargo box brim does not flip over when the battery swap upper frame is changed, which avoids damage to the battery swap device due to incoordination between the brim flipping system and the battery swapping system, and damage to the battery swapping upper frame due to factors such as strong winds and the weight of the cover after the cargo box brim is flipped into place, causing the oil cylinder to fall back and the cover to fail to open completely. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a principle block diagram of a pure electric mining truck provided by the utility model;

[0027] Figure 2 This is a structural schematic diagram of a battery replacement base provided by the utility model;

[0028] Figure 3 This is a schematic diagram of the connection between a battery replacement base and a battery replacement upper frame provided by the utility model;

[0029] Figure 4 This is a structural schematic diagram of a pure electric battery-swap wide-body mining truck integrated system provided by the utility model;

[0030] Figure 5 This is a side view of a pure electric battery-swap wide-body mining truck integrated system provided by the utility model;

[0031] Figure 6 This is a top view of a pure electric battery-swap wide-body mining truck integrated system provided by the utility model;

[0032] Figure 7 It is a schematic diagram of the layout of the front part of a chassis provided by the utility model;

[0033] Figure 8 It is a schematic diagram of the layout of the front part of a chassis provided by the utility model;

[0034] Fig. 9It is a structural schematic diagram of a high-voltage system provided by the utility model;

[0035] Fig.10 This is a wiring diagram of a high voltage system provided by the utility model;

[0036] Fig.11 It is a wiring schematic diagram of a high voltage system provided by the utility model;

[0037] Fig.12 It is a structural schematic diagram of a chassis provided by the utility model;

[0038] Fig.13 It is a structural schematic diagram of a suspension system provided by the utility model.

[0039] Figure markings: 1-base body; 2-quick connector; 3-fixed bracket; 4-positioning hole; 5-battery exchange upper frame; 6-guide block; 7-charging port; 8-cab; 9-right platform; 10-front of chassis; 11-high voltage system; 12-ATS electronic fan radiator; 13-water heating PTC; 14-air conditioning compressor; 15-steering pump; 16-filter; 17-accumulator; 18-main drive three-in-one controller; 19-auxiliary drive three-in-one controller; 20-motor single drive controller MCU; 21-high voltage wiring harness; 22-adapter box PDU; 23-high voltage bracket; 24-beam end bracket; 25-electric drive system; 26-drive shaft; 27-air pump; 28-battery frame; 29-air tank; 30-full hydraulic steering system; 31-crossbeam; 32-rear seat crossbeam; 33-oil and gas suspension hydraulic cylinder; 34-cargo box brim; 35-cargo box. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0041] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0042] It should be noted that in this embodiment, the directions or positional relationships indicated by "bottom", "top", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0043] It should also be noted that, in this embodiment, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] Embodiment 1

[0045] See also Figure 1 and Figure 3 A battery swap base includes a base body 1. The battery swap base is a carrier for carrying and fixing a battery swap upper frame, and has the function of docking with a wiring harness plug-in output by the battery swap upper frame. The base body 1 can be a rectangular frame welded together by a number of square steel profiles. A quick connector 2 is connected to the middle top of the base body 1, and a quick connector is also connected to the bottom of the battery swap upper frame 5. A wiring harness connector is arranged on the quick connector. The wiring harness connector on the quick connector of the base body 1 can be docked with the wiring harness connector output by the battery swap upper frame 5. The quick connector of the battery swap upper frame 5 is responsible for establishing a safe and reliable high-voltage power transmission path between the battery pack and the vehicle's power system (including a motor, a controller, etc.) through the base body 1. After successful docking, the battery swap upper frame 5 can provide power to the entire pure electric mining truck.

[0046] The bottom of the battery swap upper frame 5 is fixedly connected with a plurality of positioning pins in the vertical direction, and a plurality of positioning holes 4 are opened on the base body 1, and the positions of the plurality of positioning pins correspond to the plurality of positioning holes 4. After the battery swap upper frame 5 is placed on the base body 1, the positioning pins at the bottom of the battery swap upper frame 5 cooperate with the positioning holes 4 on the base body 1 to achieve the locking of the battery swap upper frame 5 in the horizontal direction; in addition, in order to meet the positioning requirements of the battery swap upper frame and the battery swap base when docking, a plurality of guide blocks 6 are connected to the top of the base body 1, and the top of the guide block 6 is an inclined surface inclined downward and outward. The guide block 6 is used to perform positioning when the battery swap upper frame and the battery swap base are docked, which improves the service life of both to a certain extent.

[0047] A fixed bracket 3 is connected to the bottom of the base body 1, and can be connected to the vehicle body through the fixed bracket 3; in addition, a charging port 7 is connected to the side wall of the base body 1, and the charging port can be electrically connected to the quick connector. In the absence of a battery swap station or when battery swapping is inconvenient, a charging pile can be used directly for charging, which increases the flexibility of vehicle operation and endurance guarantee.

[0048] The battery mounting layer is connected inside the battery swap upper frame 5. The battery mounting layer is a battery bracket composed of several square steel profiles welded together for placing batteries. The high-voltage box, BMS, thermal management system components, control box, water cooling unit and other parts are also arranged in the battery swap upper frame 5. The top of the battery swap upper frame 5 is connected with an anti-smashing cover plate. When the battery swap upper frame and the battery swap base are docked, the battery swap upper frame can be hoisted onto the battery swap base by top hoisting.

[0049] The battery swap base and the battery swap upper frame can meet the function of fast battery swap, and the battery swap time is ≤5min. The pure electric mining truck greatly reduces the energy replenishment time and improves the transportation efficiency of the mining truck.

[0050] Embodiment 2

[0051] A pure electric battery-swap wide-body mining truck integrated system comprises the battery-swap base in Example 1 and a vehicle body; the pure electric battery-swap wide-body mining truck integrated system integrates the battery-swap base in Example 1 at the platform 9 on the right side of the cab 8 on the basis of an existing pure electric mining truck.

[0052] The fixed bracket 3 at the bottom of the battery replacement base is connected to the right side platform 9 of the cab 8, see Figure 2 and Figure 3 The fixed bracket 3 includes two triangular frames, and the right side platform 9 of the cab 8 is located between the two triangular frames and is fixedly connected by bolts.

[0053] Secondly, the vehicle body includes: dual motor gearbox drive assembly, vehicle controller, motor controller, axle, wheels, cargo box, etc.; the cargo box cap brim 34 adopts a special-shaped structure, see Figure 6 It can be an L-shaped structure. The gap between the cargo box brim 34 and the battery-swap upper frame 5 is 150mm. The cargo box brim does not flip over when the battery-swap upper frame 5 is replaced, which avoids damage to the battery-swap device due to the incoordination between the brim flipping system and the battery-swap system, and avoids problems such as the oil cylinder falling back and the cover being unable to be completely opened due to strong winds, the weight of the cover, and damage to the battery-swap upper frame after the cargo box brim is flipped into place.

[0054] The pure electric battery-swap wide-body mining truck integrated system is integrated and matched with the vehicle control system, pure electric drive system, electric full hydraulic steering system and braking system to achieve pure electric drive, brake energy recovery and fast battery swap function.

[0055] See also Figure 7 and Figure 8 The front part 10 of the chassis integrates the cooling system, the full hydraulic steering system and the emergency steering system, the braking system, the high-pressure system, the frame (also called the beam), the front axle, etc. The front part of the frame adopts a disconnected type, which can increase the installation and maintenance space; the ATS electronic fan radiator 12 is installed at the front of the cabin to cool the electric drive system, and a shock-absorbing cushion is provided between the ATS electronic fan radiator 12 and the frame; the cabin is equipped with a high-pressure system 11 and a water heating PTC 13; the air-conditioning compressor 14, the steering pump 15, and the filter 16 are installed at the left front of the frame; the accumulator 17 is provided at the right front end of the frame to provide hydraulic energy for emergency steering.

[0056] The chassis high-voltage system consists of a main drive three-in-one controller 18, an auxiliary drive three-in-one controller 19, a motor single-drive controller MCU20, a high-voltage wire harness 21 and a transfer box PDU 22; the above components are fixed to a high-voltage bracket 23, and then fixed to the beam through four beam end brackets 24; the components are connected through a wire harness according to the high-voltage wiring scheme and wiring principles.

[0057] Secondly, the electric drive system 25, transmission shaft 26, air pump 27, battery frame 28 and air tank 29 are arranged in the middle of the chassis; the electric drive system consists of dual motors (parallel or series), a gearbox, and is arranged in the middle of the beam. The parallel motor has a rated power of 450KW, and the series motor has a rated power of 480KW. The electric drive system must ensure that the power line is about 4 degrees; the electric air pump 27 has a rated power of 4KW and is arranged on the left side of the middle of the beam; the battery frame 28 and the air tank 29 are arranged behind the electric air pump on the left side of the beam; the drive shaft can be selected into a two-stage type (including the front drive shaft and the intermediate drive shaft) and a three-stage type (including the support drive shaft, the front drive shaft and the intermediate drive shaft) according to the wheelbase.

[0058] Furthermore, the pure electric mining truck adopts a 6x4 structure, that is, three axles and rear four-wheel drive; the first number "6" means that the vehicle has a total of 6 wheels; the second number "4" means that 4 of the wheels are driving wheels, that is, responsible for providing driving force to propel the vehicle forward. In the 6x4 configuration, usually one or two of the two rear axles are equipped with a drive device, and each drive axle is usually equipped with two wheels, so there are 4 driving wheels in total.

[0059] In addition, the front suspension of the pure electric mining truck adopts oil-gas suspension, and the rear suspension adopts leaf spring balanced suspension; the front axle is equipped with two steering cylinders, and the steering system is full hydraulic steering; the full hydraulic steering system 30 is mainly composed of steering pump, steering valve, steering cylinder, steering pipeline and other components; when the driver turns the steering wheel, the steering valve adjusts the flow direction and pressure of the hydraulic oil according to the change of the steering angle, thereby pushing the piston in the steering cylinder to move, driving the steering rod and the wheel to rotate, and realizing the steering of the vehicle.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pure electric battery-swap wide-body mining truck integrated system, characterized in that: Including battery replacement base and vehicle body; The battery replacement base comprises: a base body (1); A quick connector (2) is connected to the top of the base body (1), and a wiring harness connector is connected to the quick connector (2) for docking with the wiring harness connector of the quick connector at the bottom of the battery replacement upper frame (5); A fixing bracket (3) connected to the bottom of the base body (1) and used for connecting to a vehicle body; A plurality of positioning holes (4) are provided on the base body (1) and connected to positioning pins at the bottom of the battery replacement upper frame (5); The battery replacement base is connected to the right side platform of the cab of the vehicle body via the fixing bracket (3).

2. The pure electric battery-swap wide-body mining truck integrated system according to claim 1 is characterized in that: The cargo box brim (8) of the vehicle body is an L-shaped structure, and the cargo box brim does not flip over when the battery-changing upper frame (5) is replaced.

3. The pure electric battery-swap wide-body mining truck integrated system according to claim 2 is characterized in that: The gap between the cargo box brim (8) and the battery exchange upper frame (5) is 150 mm.

4. The pure electric battery-swap wide-body mining truck integrated system according to claim 1 is characterized in that: The front suspension of the vehicle body adopts front oil-gas suspension, and the rear suspension adopts leaf spring balanced suspension.

5. The pure electric battery-swap wide-body mining truck integrated system according to claim 1 is characterized in that: The steering system of the vehicle body adopts a full hydraulic steering system.

6. The pure electric battery-swap wide-body mining truck integrated system according to claim 5 is characterized in that: The electric drive system, transmission shaft, air pump, battery frame and air tank are arranged in the middle of the chassis of the vehicle body; An ATS electronic fan radiator is installed at the front of the engine room of the whole vehicle body, and a shock-absorbing cushion is provided between the radiator and the frame; a high-pressure system and a water heating PTC are installed in the engine room of the whole vehicle body, an air-conditioning compressor, a steering pump, and a filter are installed at the left front part of the frame of the whole vehicle body, and an accumulator is provided at the right front end of the frame of the whole vehicle body to provide hydraulic energy for emergency steering.

7. The pure electric battery-swap wide-body mining truck integrated system according to claim 1 is characterized in that: The vehicle body drive adopts a 6x4 structure.

8. The pure electric battery-swap wide-body mining truck integrated system according to claim 1 is characterized in that: The battery exchange base further comprises: a plurality of guide blocks (6) connected to the top of the base body (1) and used for positioning the battery exchange upper frame (5) when docking with the base body (1).

9. The pure electric battery-swap wide-body mining truck integrated system according to claim 1 is characterized in that: The battery exchange base also includes: a charging port (7) connected to the side wall of the base body (1).

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