Electric concrete mixing truck

Abstract

The utility model provides an electric concrete mixing truck which comprises a chassis, a power supply system, an electric drive bridge system, a cab and a concrete mixing tank, and the concrete mixing tank and the cab are arranged on the chassis; the power supply system is connected with the electric drive axle system and used for supplying power to the electric drive axle system, and the electric drive axle system is used for driving the axle to rotate; the power supply system comprises a power battery pack, and the power battery pack is connected with the chassis and used for providing power; and the cooling system is connected with the chassis and is used for cooling the power battery pack. The power supply system is arranged to provide power for the whole vehicle, underground waste gas production and pollution are reduced, and noise caused by operation of the internal combustion engine is avoided; the cooling system can cool the power battery pack to prevent the power battery pack from being damaged or influencing the working efficiency due to over-high temperature; due to the arrangement of the electric drive axle system, a gearbox is omitted, and the transmission efficiency of equipment is improved.

Description

Technical Field

[0001] The present application relates to the technical field of electric concrete mixer trucks, and in particular to an electric concrete mixer truck. Background Art

[0002] An underground concrete mixer truck is a concrete mixing and transporting vehicle specially designed for use in underground mines or tunnels, and can carry out concrete transport operations in complex underground environments. Underground mines and other environments are relatively complex, with characteristics such as small space and poor ventilation. Traditional internal combustion concrete mixer trucks produce certain exhaust emissions during operation, including harmful substances such as particulate matter and nitrogen oxides. These substances have adverse effects on the health of mine workers in closed or poorly ventilated mines. In addition, the internal combustion engine is noisy, posing a threat to the hearing health of workers and is not conducive to the development of underground mine work. Moreover, as the country's carbon emission requirements become increasingly stringent, the development of a pure battery concrete mixer truck that can be used in underground mining environments has become an urgent need for OEMs.

[0003] Therefore, the concrete mixer truck in the prior art has further room for improvement. Utility Model Content

[0004] In view of this, in order to address the technical problems that the concrete mixer trucks in the above-mentioned prior art are fuel-powered, will produce exhaust gas pollutants during underground transportation and the internal combustion engine will make a lot of noise, the present application provides an electric concrete mixer truck, which uses a battery to power the mixer truck. During underground transportation, it will not produce fuel exhaust gas pollutants and the noise is greatly reduced.

[0005] The present application provides an electric concrete mixer truck, comprising a chassis, a power supply system, an electric drive axle system, a cab, and a concrete mixing tank. The concrete mixing tank and the cab are arranged on the chassis; the power supply system is connected to the electric drive axle system, and the power supply system is used to supply power to the electric drive axle system, and the electric drive axle system is used to drive the vehicle axle to rotate;

[0006] The power supply system includes a power battery pack, which is connected to the chassis and is used to provide power;

[0007] It also includes a cooling system, which is connected to the chassis and is used to cool the power battery pack.

[0008] Compared with the prior art, the electric concrete mixer truck of the present application is provided with a power supply system, which includes a power battery pack for providing power to the entire vehicle and driving the truck to move, so that when the concrete mixer truck is running underground, it is powered by electricity and does not need to use diesel, reducing the production and pollution of exhaust gas underground, and will not generate noise due to the operation of the internal combustion engine, greatly improving the environmental friendliness of the underground environment; at the same time, the present application is also provided with a cooling system, which can cool the power battery pack to avoid damage to the power battery pack due to excessive temperature or affecting work efficiency, so as to improve work safety and stability; in addition, the present application is also provided with an electric drive axle system, and the setting of the electric drive axle system eliminates the presence of a gearbox and improves the transmission efficiency of the equipment.

[0009] Preferably, the cooling system includes a battery pack thermal management system, and the battery pack thermal management system is used to cool the power battery pack;

[0010] and / or,

[0011] The cooling system includes an electric motor electronically controlled cooling system, and the electric motor electronically controlled cooling system is used to cool the electric drive axle system.

[0012] Preferably, the battery pack thermal management system includes a cooling mode, a self-circulation mode and a standby mode;

[0013] When the power battery pack temperature is greater than T1 and the water inlet temperature Tmax of the battery pack thermal management system is greater than 30°C, the battery pack thermal management system enters the "cooling mode";

[0014] When the power battery pack temperature is greater than T2 and the water inlet temperature of the thermal management unit is less than or equal to 15°C, the battery pack thermal management system enters the "self-circulation mode";

[0015] When the power battery pack temperature is greater than T2 and 15°C < the water inlet temperature of the thermal management unit Tmax ≤ 25°C, maintain the previous state;

[0016] When the power battery pack temperature is ≤ T2, it enters "standby mode";

[0017] Among them, 30℃≤T2 <T1。

[0018] Preferably, the cooling system further comprises an air conditioning system, and the air conditioning system comprises a condenser, an evaporation box, a drying bottle and an electric drive compressor;

[0019] The condenser is arranged at the hinged front part of the front end of the vehicle, the evaporator is arranged at the rear part of the cab, and the drying bottle and the electric drive compressor are arranged below the power battery pack.

[0020] Preferably, the motor electronically controlled cooling system includes a water pump, a motor electronically controlled radiator and a second expansion water tank;

[0021] The motor electronically controlled radiator is arranged at the front end of the vehicle;

[0022] The water pump is arranged on the outside of the motor electronically controlled radiator, the second expansion water tank is connected to the chassis, and the second expansion water tank is located on the side of the battery pack thermal management unit.

[0023] Preferably, the electric drive axle system includes a front drive assembly and a rear drive assembly;

[0024] The front drive assembly is connected to the front axle, and the front drive assembly is used to drive the front axle;

[0025] The rear drive assembly is connected to the rear axle, and the rear drive assembly is used to drive the rear axle.

[0026] Preferably, the rear drive assembly includes a rear drive motor, a rear drive axle, and a rear motor controller;

[0027] The rear motor controller is connected to the rear drive motor via a second bracket, and the rear drive motor is connected to the chassis via a second bracket;

[0028] The rear drive motor is connected to the rear drive axle via a coupling;

[0029] and / or,

[0030] The front drive assembly includes a front drive motor, a front drive axle, a front motor controller and a swing frame;

[0031] The front motor controller is connected to the front drive motor via a first bracket;

[0032] The front drive motor is connected to the front drive axle via a coupling, and the front drive motor is connected to the swing frame;

[0033] The front drive axle is connected to the swing frame to achieve a left and right swing angle β of the vehicle;

[0034] Among them, 6°≤β≤8°.

[0035] Preferably, the power supply system further comprises a battery pack frame, the battery pack frame is a layered structure, and the battery pack frame comprises at least two battery compartments, and the battery compartments are used to place batteries;

[0036] A shock-absorbing foot is provided at the bottom of the battery pack frame, and the battery pack frame is connected to the chassis via the shock-absorbing foot.

[0037] Preferably, the power supply system further includes a high-voltage distribution box, a battery, a charger and a socket;

[0038] The high-voltage distribution box is connected to the chassis;

[0039] The charger is located above the power battery pack;

[0040] The charger is connected to the power battery pack, and the socket is arranged on the side of the chassis.

[0041] Preferably, it further comprises a hydraulic system, wherein the hydraulic system is connected to the chassis;

[0042] The hydraulic system includes a hydraulic drive motor, a hydraulic motor controller, a hydraulic oil tank and a steering brake system;

[0043] The hydraulic drive motor is located above the hydraulic oil tank;

[0044] The hydraulic oil tank is arranged on the left side of the front vehicle chassis, behind the left front wheel;

[0045] The hydraulic motor controller is connected to the chassis via a third bracket;

[0046] The steering brake system is used to control steering brakes.

[0047] The electric concrete mixer truck of the present application has at least the following technical effects:

[0048] 1. By setting up a power supply system, which includes a power battery pack to provide power to the entire vehicle and drive the transport vehicle to move, the concrete mixer truck can be powered by electricity when running underground, without the need for diesel, reducing the production and pollution of exhaust gas underground, and without the noise generated by the operation of the internal combustion engine, which greatly improves the environmental friendliness of the underground environment;

[0049] 2. By setting up an electric drive axle system to drive the axle to rotate, the existence of the gearbox is eliminated, and the transmission efficiency of the equipment is improved;

[0050] 3. By setting up a cooling system to cool the power battery pack and electric drive axle system, it can effectively prevent the electrical appliances from overheating, thereby ensuring operational effectiveness and safety;

[0051] 4. By setting up a hydraulic system to assist the electric drive axle system, the rotation of the transport vehicle can be better realized, which is energy-saving and efficient, making the rotation of the transport vehicle more stable and faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 This is a schematic diagram of the three-dimensional structure of an electric concrete mixer truck provided in one embodiment of the present application. Figure 1 ;

[0053] Figure 2This is a schematic diagram of the three-dimensional structure of an electric concrete mixer truck provided in one embodiment of the present application. Figure 2 ;

[0054] Figure 3 This is a schematic diagram of the three-dimensional structure of the power supply system provided in one embodiment of the present application. Figure 1 ;

[0055] Figure 4 This is a schematic diagram of the three-dimensional structure of the power supply system provided in one embodiment of the present application. Figure 2 ;

[0056] Figure 5 This is a schematic diagram of the three-dimensional structure of the electric drive bridge system provided in one embodiment of the present application. Figure 1 ;

[0057] Figure 6 This is a schematic diagram of the three-dimensional structure of the electric drive bridge system provided in one embodiment of the present application. Figure 2 ;

[0058] Figure 7 This is a schematic diagram of the three-dimensional structure of a cooling system provided in one embodiment of the present application;

[0059] Figure 8 This is a schematic diagram of the three-dimensional structure of a hydraulic system provided in one embodiment of the present application;

[0060] Figure 9 This is a schematic diagram of the three-dimensional structure of a cab provided in one embodiment of the present application;

[0061] Figure 10 This is a schematic diagram of the three-dimensional structure of the concrete mixing tank and chassis installation provided in one embodiment of the present application.

[0062] Reference numerals:

[0063] 1. Chassis; 2. Power supply system; 3. Electric drive axle system; 4. Cooling system; 5. Hydraulic system; 6. Cab; 7. Concrete mixing tank;

[0064] 21. Power battery pack; 22. High-voltage distribution box; 23. Fast charging socket; 24. Slow charging charger; 25. Slow charging socket; 26. Battery; 27. Battery pack frame; 2701. Shock-absorbing feet;

[0065] 31. Front drive motor; 32. Front drive axle; 33. Front motor controller; 34. Swing frame; 35. First bracket; 36. Rear drive motor; 37. Rear drive axle; 38. Rear motor controller; 39. Second bracket;

[0066] 41. Battery pack thermal management system; 42. Motor electronically controlled cooling system; 43. Air conditioning system; 4101. Thermal management unit; 4102. First expansion tank; 4103. First support; 4201. Water pump; 4202. Motor electronically controlled radiator; 4203. Second expansion tank; 4301. Condenser; 4302. Evaporator; 4303. Drying flask; 4304. Electric drive compressor;

[0067] 51. Hydraulic motor controller; 52. Hydraulic drive motor; 53. Hydraulic oil tank; 54. Steering brake system; 5401. Brake valve; 5402. Priority valve; 5403. Steering gear; 5404. Steering cylinder; 5405. Filling valve; 5406. Accumulator;

[0068] 71. Mixing tank; 72. Reducer; 73. Mixing tank drive motor; 74. Mixing tank motor controller; 75. Mixing tank support wheel; 76. Guardrails on both sides; 77. Second support. DETAILED DESCRIPTION

[0069] In order to enable those skilled in the art to better understand the technical solutions of the present disclosure, the present disclosure is described in detail, clearly, and completely in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure and are not intended to limit the present disclosure.

[0070] In the description of this application, if there is a description of first or second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0071] Those skilled in the art should understand that, in the disclosure of this application, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, which are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms cannot be understood as limiting this application.

[0072] The present application will be described in further detail below with reference to the accompanying drawings. Figures 1 to 10 illustrate.

[0073] The present application provides an electric concrete mixer truck (hereinafter referred to as the truck), such as Figures 1 to 2 As shown, the transport vehicle includes a chassis 1, a power supply system 2, an electric drive axle system 3, a cab 6 and a concrete mixing tank 7. The concrete mixing tank 7 and the cab 6 are arranged on the chassis 1. Figure 1 As shown, the chassis 1 is an articulated structure, and the chassis 1 is divided into a first part and a second part, which are hinged to each other through an articulated seat, and a rotating mechanism is provided at the lower ends of the first part and the second part for driving the chassis 1 to rotate; wherein, the cab 6 and the power supply system 2 are arranged on the first part, and the concrete mixing tank 7 is arranged on the first part, and the power supply system 2 is located between the cab 6 and the concrete mixing tank 7; the power supply system 2 is used to supply power to the entire vehicle, and the power supply system 2 is connected to the electric drive axle system 3, and the electric drive axle system 3 is connected to the axle of the transport vehicle for driving the axle to rotate; wherein, it also includes a cooling system 4, the cooling system 4 is connected to the chassis 1, and the cooling system 4 is used to cool the power supply system 2 and the electric drive axle system 3, which can effectively ensure that the electrical appliances will not overheat, thereby ensuring the effectiveness and safety of operation.

[0074] Specifically, such as Figure 3 、 Figure 4 As shown, the power supply system 2 includes a power battery pack 21, a high-voltage distribution box 22, a socket, a charger, and a battery 26. The power battery pack 21 is connected to the chassis 1 and adopts a layered design. The power battery pack 21 is fixed to the chassis 1 by multiple shock-absorbing feet 2701. The power battery pack 21 is used to provide power. The high-voltage distribution box 22 is fixed to the chassis 1 near the power battery pack 21. The high-voltage distribution box 22 is spaced apart from the power battery pack 21 and is located to the side of the power battery pack 21. The charger is a slow-charging charger, and the sockets are divided into a fast-charging socket 23 and a slow-charging socket 25. The slow-charging charger 24 is placed on the upper side of the power battery pack 21, and the fast-charging socket 23 and the slow-charging socket 25 are placed on both sides of the power battery pack 21. The battery 26 is 24V and is placed at the front of the chassis 1, near the hinge position, and to the side of the high-voltage distribution box 22.

[0075] Further, such as Figure 3 As shown, the power supply system 2 also includes a battery pack frame 27. The battery pack frame 27 is a layered structure, which is provided with at least two battery compartments for placing the power battery pack 21. In this embodiment, the battery pack frame 27 is provided with 4 battery compartments, and each layer of battery compartments is connected by bolts. Shock-absorbing feet 2701 are provided at the bottom of the battery pack frame 27, and the battery pack frame 27 is connected to the chassis 1 through the shock-absorbing feet 2701.

[0076] like Figure 5 、 Figure 6 As shown, the electric drive axle system 3 includes a front drive assembly and a rear drive assembly. The front drive assembly is connected to the front axle and is used to drive the front axle; the rear drive assembly is connected to the rear axle and is used to drive the rear axle. Specifically, Figure 5As shown, the front-drive assembly includes a front-drive motor 31, a front drive axle 32, a front motor controller 33, and a first bracket 35; the front drive axle 32 integrates a swing frame 34 to achieve the left-right swing angle β of the vehicle; one end of the front-drive motor 31 is connected to the swing frame 34, and the other end is connected to the front motor controller 33; wherein, the front-drive motor 31 is connected to the input flange of the front drive axle 32 via a coupling, so that the front-drive motor 31 swings left and right with the swing frame 34; the first bracket 35 is connected to the end of the front-drive motor 31 away from the swing frame 34, and the front motor controller 33 is connected to the first bracket 35, so that the front motor controller 33 is connected to the front-drive motor 31 via the first bracket 35. In this embodiment, the left-right swing angle β of the vehicle ranges from 6° to 8°;

[0077] Further, such as Figure 6 As shown, the rear-drive assembly includes a rear-drive motor 36, a rear drive axle 37, and a rear motor controller 38; one end of the rear-drive motor 36 is connected to the input flange of the rear drive axle 37 through a coupling, and the other end is connected to the second bracket 39; the rear motor controller 38 is arranged at the upper end of the second bracket 39, so that the rear motor controller 38 is connected to the rear-drive motor 36 through the second bracket 39, and the rear-drive motor 36 is connected to the chassis 1 through the second bracket 39.

[0078] In this embodiment, an electric drive axle system 3 is provided to drive the axle, eliminating the need for a gearbox and improving the device's transmission efficiency. The power supply system 2 distributes electrical energy to the controllers for the front and rear drive motors 31 and 36, respectively, through the high-voltage distribution box 22. The controllers for the front and rear drive motors 31 and 36 drive the front and rear drive motors 31 and 36, respectively, transmitting power through the drive axle to the front and rear wheels, enabling vehicle movement. The battery 26 drives the device's 24V DC loads.

[0079] like Figure 7 、 Figure 8As shown, the cooling system 4 includes a battery pack thermal management system 41, which is used to cool the power battery pack 21. The battery pack management system is arranged above the high-voltage distribution box 22 and is fixed to the chassis 1 through the first support 4103; the battery thermal management system includes a thermal management unit 4101 and a first expansion water tank 4102, the first expansion water tank 4102 is placed on the side of the thermal management unit 4101, and the first expansion water tank 4102 is fixed to the vehicle cover beam; wherein, the battery pack thermal management system 41 includes a cooling mode, a self-circulation mode and a standby mode; when the power battery When the temperature of the battery pack 21 is greater than T1 and the water inlet temperature Tmax of the battery pack thermal management system 41 is greater than 30°C, the battery pack thermal management system 41 enters the "cooling mode"; when the temperature of the power battery pack 21 is greater than T2 and the water inlet temperature Tmax of the thermal management unit 4101 is less than or equal to 15°C, the battery pack thermal management system 41 enters the "self-circulation mode"; when the temperature of the power battery pack 21 is greater than T2 and 15°C < the water inlet temperature Tmax of the thermal management unit 4101 is less than or equal to 25°C, the previous state is maintained; when the temperature of the power battery pack 21 is less than or equal to T2, the battery pack enters the "standby mode"; where 30°C is less than or equal to T2 <T1。

[0080] In this embodiment, T1 = 35° C., T2 = 30° C. In this embodiment, the battery pack thermal management system is set to multiple modes according to the temperature of the battery pack management system, which can be controlled for different temperatures respectively, achieving effective resource conservation while accurately controlling the temperature.

[0081] Further, such as Figure 7 As shown, the cooling system 4 also includes a motor electronic control cooling system 42, which is used to cool the electric drive axle system 3; the motor electronic control cooling system 42 is arranged on the side of the battery thermal management system, and the motor electronic control cooling system 42 cools the front drive motor 31, the front motor controller 33, the rear drive motor 36 and the rear motor controller 38; the motor electronic control system includes a water pump 4201, a motor electronic control radiator 4202 and a second expansion water tank 4203, the motor electronic control radiator 4202 is arranged at the front end of the vehicle and on both sides of the battery pack, the water pump 4201 is arranged on the outside of the motor electronic control radiator 4202, and the second expansion water tank 4203 is arranged on the left side of the thermal management unit 4101.

[0082] Further, such as Figure 7 As shown, the cooling system 4 also includes an air conditioning system 43, which includes a condenser 4301, an evaporation box 4302, a drying bottle 4303 and an electric drive compressor 4304; the condenser 4301 is arranged at the hinged front part of the front end of the vehicle and is located at the rear and lower part of the high-voltage distribution box 22, as shown in FIG. Figure 9 As shown, the evaporation box 4302 is arranged at the rear of the cab 6, and the drying bottle 4303 and the electric drive compressor 4304 are arranged below the high-voltage distribution box 22.

[0083] On the basis of any of the above embodiments, the electric concrete mixer truck of the present application is further improved; Figure 8 、 Figure 9 As shown, in this embodiment, the electric mixer truck also includes a hydraulic system 5, which is connected to the chassis 1. By setting up the hydraulic system 5, the electric drive axle system 3 is assisted to better realize the rotation of the truck, which is energy-saving and efficient, and makes the rotation of the truck more stable and faster.

[0084] Specifically, such as Figure 8 As shown, the hydraulic system 5 includes a hydraulic drive motor 52, a hydraulic motor controller 51, a hydraulic oil tank 53 and a steering brake system 54; wherein, the hydraulic drive motor 52 is located above the hydraulic oil tank 53 and is installed upright; the hydraulic oil tank 53 is arranged on the left side of the front vehicle chassis 1, behind the left front wheel; the hydraulic motor controller 51 is connected to the chassis 1 through a third bracket, and the hydraulic motor controller 51 is arranged above the hydraulic motor; the steering brake system 54 is used to control steering braking.

[0085] Further, such as Figure 8 、 Figure 9 As shown, the steering brake system 54 includes a hydraulic pump, a priority valve 5402, a steering gear 5403 and a steering cylinder 5404, a charging valve 5405, an accumulator 5406, a brake valve 5401, a service brake and a parking brake; the hydraulic pump is connected to the hydraulic drive motor 52 through a coupling; the steering gear 5403 is placed in the cab 6, in front of the driver's seat in the cab 6; Figure 2 As shown, two steering cylinders 5404 are provided, which are distributed on both sides of the hinge position. The cylinder hinge point is connected to the rear chassis 1, and the piston rod hinge point is connected to the front chassis 1; the priority valve 5402, the filling valve 5405, and the accumulator 5406 are placed in the front of the chassis 1, on the right side of the hinge position, and are connected to the chassis 1; the service brake and the parking brake are integrated in the front drive axle 32 and the rear drive axle 37; the brake valve 5401 is placed in the cab 6, below the steering gear 5403, for easy operation by the driver's feet.

[0086] like Figure 10 As shown, the concrete mixing tank 7 is fixed to the chassis 1 at the rear of the vehicle. The concrete mixing tank 7 includes a mixing tank 71, a reducer 72, a mixing tank drive motor 73, a mixing tank motor controller 74, mixing tank supporting wheels 75 and guardrails 76 on both sides. One end of the mixing tank 71 is supported on two mixing tank supporting wheels 75 fixed to the chassis 1, the upper end is connected to the rear end of the base through a second support 77, and the other end is connected to the reducer 72 fixed to the chassis 1; the mixing tank drive motor 73 is directly inserted into the mounting port of the reducer 72; and the mixing tank motor controller 74 is connected to the mixing tank drive motor 73 through the second support 77.

[0087] It should be noted that in the present application, the motor electronically controlled cooling system 42 adopts parallel cooling of the front motor controller 33, the rear motor controller 38, the hydraulic motor controller 51 and the mixing tank motor controller 74, and then cools them in series with the motors driven by each of them; the radiator is cooled by an axial flow fan with a temperature sensor.

[0088] At the same time, the electric concrete mixer truck of the present application also includes a control system, which includes a vehicle controller. The vehicle controller communicates with each device via CAN2.0.

[0089] The electric concrete mixer truck of the present application has two states, namely, traction state and braking state; wherein, in the vehicle traction state, the motor controller in the electric drive axle system 3 inverts the DC power provided by the power battery pack 21 into AC power for use by each drive motor; in the braking state, each motor controller in the electric drive axle system 3 rectifies the AC power generated by each drive motor into DC power and transmits it to the power battery pack 21. In this state, each drive motor in the electric drive axle system 3 acts as a generator to convert the braking energy of the entire vehicle into electrical energy, providing braking force for the entire vehicle and slowing down the vehicle.

[0090] It should be noted that the various embodiments of the present application can be arbitrarily combined into new embodiments if the solutions do not conflict and the technical solutions can coexist.

[0091] The present application has been described in detail above. Specific examples have been used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is intended only to facilitate understanding of the present application and its core concepts. It should be noted that, without departing from the principles of the present application, a number of improvements and modifications may be made to the present application by a person skilled in the art, and such improvements and modifications shall fall within the scope of protection of the claims of the present application.

Claims

1. An electric concrete mixer truck, characterized in that: The vehicle comprises a chassis (1), a power supply system (2), an electric drive axle system (3), a cab (6), and a concrete mixing tank (7), wherein the concrete mixing tank (7) and the cab (6) are arranged on the chassis (1); the power supply system (2) is connected to the electric drive axle system (3), the power supply system (2) is used to supply power to the electric drive axle system (3), and the electric drive axle system (3) is used to drive the vehicle axle to rotate; The power supply system (2) includes a power battery pack (21), the power battery pack (21) is connected to the chassis (1), and the power battery pack (21) is used to provide power; It also includes a cooling system (4), which is connected to the chassis (1) and is used to cool the power battery pack (21).

2. The electric concrete mixer truck according to claim 1, characterized in that: The cooling system (4) includes a battery pack thermal management system (41), and the battery pack thermal management system (41) is used to cool the power battery pack (21); and / or, The cooling system (4) includes a motor electronically controlled cooling system (42), and the motor electronically controlled cooling system (42) is used to cool the electric drive axle system (3).

3. The electric concrete mixer truck according to claim 1, characterized in that: The battery pack thermal management system (41) includes a cooling mode, a self-circulation mode and a standby mode; When the temperature of the power battery pack (21) is greater than T1 and the water inlet temperature Tmax of the battery pack thermal management system (41) is greater than 30°C, the battery pack thermal management system (41) enters the "cooling mode"; When the temperature of the power battery pack (21) is greater than T2, and the water inlet temperature Tmax of the thermal management unit (4101) is less than or equal to 15°C, the battery pack thermal management system (41) enters the "self-circulation mode"; When the temperature of the power battery pack (21) is greater than T2, and the water inlet temperature of the thermal management unit (4101) is less than Tmax and less than 25°C, the previous state is maintained; When the temperature of the power battery pack (21) is less than or equal to T2, the system enters the "standby mode"; Among them, 30℃≤T2 <T1。 4. The electric concrete mixer truck according to claim 1, characterized in that: The cooling system (4) further includes an air conditioning system (43), wherein the air conditioning system (43) includes a condenser (4301), an evaporation box (4302), a drying bottle (4303) and an electric drive compressor (4304); The condenser (4301) is arranged at the hinged front part of the front end of the vehicle, the evaporator (4302) is arranged at the rear of the cab (6), and the drying bottle (4303) and the electric drive compressor (4304) are arranged below the power battery pack (21).

5. The electric concrete mixer truck according to claim 2, characterized in that: The motor electronically controlled cooling system (42) comprises a water pump (4201), a motor electronically controlled radiator (4202) and a second expansion water tank (4203); The motor electronically controlled radiator (4202) is arranged at the front end of the vehicle; The water pump (4201) is arranged outside the motor electronically controlled radiator (4202), the second expansion water tank (4203) is connected to the chassis (1), and the second expansion water tank (4203) is located on the side of the battery pack thermal management unit (4101).

6. The electric concrete mixer truck according to claim 1, characterized in that: The electric drive axle system (3) includes a front drive component and a rear drive component; The front drive assembly is connected to the front axle, and the front drive assembly is used to drive the front axle; The rear drive assembly is connected to the rear axle, and the rear drive assembly is used to drive the rear axle.

7. The electric concrete mixer truck according to claim 6, characterized in that: The rear drive assembly includes a rear drive motor (36), a rear drive axle (37), and a rear motor controller (38); The rear motor controller (38) is connected to the rear drive motor (36) via a second bracket (39), and the rear drive motor (36) is connected to the chassis (1) via the second bracket (39); The rear drive motor (36) is connected to the rear drive axle (37) via a coupling; and / or, The front drive assembly includes a front drive motor (31), a front drive axle (32), a front motor controller (33) and a swing frame (34); The front motor controller (33) is connected to the front drive motor (31) via a first bracket (35); The front drive motor (31) is connected to the front drive axle (32) via a coupling, and the front drive motor (31) is connected to the swing frame (34); The front drive axle (32) is connected to the swing frame (34) to achieve a left-right swing angle β of the vehicle; Among them, 6°≤β≤8°.

8. The electric concrete mixer truck according to claim 1, characterized in that: The power supply system (2) further comprises a battery pack frame (27), wherein the battery pack frame (27) is a layered structure and comprises at least two battery compartments, wherein the battery compartments are used to place batteries; A shock-absorbing support foot (2701) is provided at the bottom of the battery pack frame (27), and the battery pack frame (27) is connected to the chassis (1) via the shock-absorbing support foot (2701).

9. The electric concrete mixer truck according to claim 1, characterized in that: The power supply system (2) further includes a high-voltage distribution box (22), a battery (26), a charger, and a socket; The high-voltage distribution box (22) is connected to the chassis (1); The charger is located above the power battery pack (21); The charger is connected to a power battery pack (21), and the socket is arranged on the side of the chassis (1).

10. The electric concrete mixer truck according to claim 1, characterized in that: It also includes a hydraulic system (5), wherein the hydraulic system (5) is connected to the chassis (1); The hydraulic system (5) includes a hydraulic drive motor (52), a hydraulic motor controller (51), a hydraulic oil tank (53) and a steering brake system (54); The hydraulic drive motor (52) is located above the hydraulic oil tank (53); The hydraulic oil tank (53) is arranged on the left side of the front vehicle chassis (1), and is located behind the left front wheel; The hydraulic motor controller (51) is connected to the chassis (1) via a third bracket; The steering brake system (54) is used to control steering brakes.

Images