A new energy commercial vehicle

Abstract

The utility model relates to a new energy commercial vehicle, including car body, support frame, power battery box and drive motor: car body is fixedly connected with support frame, power battery box quantity is two and is tightly connected with support frame, and power battery box inside is integrated with complete charge and discharge management system, including power battery unit, vehicle power management unit and high pressure charge and discharge unit, drive motor is transmission connection with the rear wheel of car body, and drive motor is connected through high pressure wiring harness with two power battery boxes. The utility model discloses through every power battery box inside integrated complete charge and discharge management system, two power battery boxes are alternately powered for drive motor, solved the traditional new energy commercial vehicle with its battery capacity promotion its and battery related component complexity also along with promotion, the insufficient range of endurance and the whole car must stop the operation and carry out the technical problem of the repair of battery failure.

Description

Technical Field

[0001] This utility model relates to the field of new energy commercial vehicle technology, and more specifically to a new energy commercial vehicle. Background Technology

[0002] The development of new energy pure electric commercial vehicles has always followed the principle that the battery provides power to the motor through the electronic control system and battery management system to enable vehicle operation.

[0003] Existing new energy pure electric commercial vehicles consist of a charging and discharging system, including an electronic control system, a battery management system, a battery, and a charging system, which together form a charging and discharging system. These components are physically distributed in the space remaining after the engine oil tank is removed from the original vehicle.

[0004] The battery powers the entire vehicle, and if any individual battery has a voltage difference or malfunction during long-term operation, the entire vehicle must be taken out of service for maintenance.

[0005] Commercial vehicles with low battery configurations not only have short driving range, but also require multiple charging during long-distance transportation. This process involves repeatedly searching for charging stations, taking detours, and dealing with high electricity prices and long waiting times for charging.

[0006] To increase driving range, the only solution is to increase the number of battery packs. However, connecting battery packs in series or parallel increases the system management voltage and current, making the system more complex. Furthermore, high-rate batteries cannot achieve the same driving range as high-rate batteries.

[0007] Therefore, how to provide a new type of new energy commercial vehicle that has a long driving range without increasing the complexity of related components is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0008] In view of this, the present invention provides a new energy commercial vehicle, which aims to solve the technical problem that the complexity of related components in traditional new energy commercial vehicles increases with the increase of battery capacity.

[0009] A new energy commercial vehicle, comprising:

[0010] The vehicle body has a support frame fixedly connected to it, and a wiring harness connection port that connects to the control panel inside the cab is located at the rear of the cab.

[0011] The power battery box consists of two units, both of which are securely connected to the support frame. The power battery box integrates a complete charging and discharging management system, which includes: a power battery unit, a vehicle power management unit, and a high-voltage charging and discharging unit. The power battery unit is connected to the vehicle power management unit and the high-voltage charging and discharging unit via signal lines and high-voltage wiring harnesses. The vehicle power management unit and the high-voltage charging and discharging unit are connected via signal lines. The vehicle power management unit is also connected to the wiring harness connection port via signal lines.

[0012] The drive motor is installed at the rear wheel position of the vehicle body and is connected to the rear wheel drive. The drive motor is connected to the high-voltage charging and discharging unit corresponding to the two power battery boxes through high-voltage wiring harnesses.

[0013] Through the above technical solution, this utility model integrates a complete charging and discharging management system in each power battery box. This allows for the improvement of the range of new energy commercial vehicles by increasing the number of power battery boxes, without having to improve the performance of other related components. Each battery box is independent, so even if one power battery box fails, the other power battery box can still work, thus improving the reliability and range of the vehicle.

[0014] Preferably, the power battery unit includes a battery pack and a battery management system (BMS). The battery pack and the BMS are connected via signal lines. The BMS is used to detect the voltage, current, and temperature parameters of each cell in the battery pack.

[0015] Preferably, the vehicle power management unit includes an energy management system (EMS) and a vehicle controller (VCU). The EMS and VCU are connected via signal lines, and the VCU and BMS are connected via signal lines.

[0016] Preferably, the high-voltage charging and discharging unit includes a high-voltage power distribution box (PDU) and an on-board charger (OBC). The high-voltage power distribution box (PDU) is connected to the battery pack via a high-voltage wiring harness and is also connected to the vehicle controller (VCU) via a signal line. The on-board charger (OBC) is connected to the high-voltage power distribution box (PDU) via a high-voltage wiring harness.

[0017] Preferably, it also includes a motor controller MCU, which is connected to the drive motor and the high-voltage distribution box PDU via a high-voltage wiring harness, and is connected to the battery management system (BMS), energy management system (EMS), and vehicle controller (VCU) via electrical signals.

[0018] Preferably, the on-board charger (OBC) is electrically connected to the vehicle control unit (VCU) to receive charging control commands.

[0019] Preferably, the vehicle control unit (VCU) acts as the central hub, coordinating the operation of various components.

[0020] Preferably, the two power battery packs alternately supply power to the drive motor. When one power battery pack fails, the other power battery pack can seamlessly take over the power supply to ensure the continuous operation of the vehicle.

[0021] Preferably, the power supply of the two power battery boxes can be manually switched.

[0022] As can be seen from the above technical solution, compared with the prior art, this utility model discloses a new energy commercial vehicle with the following beneficial effects: Traditional new energy commercial vehicles typically require complex battery pack connections when increasing battery capacity, which leads to increased voltage and current in system management and consequently increased system complexity. This utility model, through an independent power battery box design, with each battery box having its own independent management system, avoids the complexity caused by the battery pack connection method and reduces the overall complexity of the system. Attached Figure Description

[0023] Figure 1 A top view of a new energy commercial vehicle (with power battery boxes on both sides of the vehicle body) provided by this utility model;

[0024] Figure 2 A side view of a new energy commercial vehicle (with power battery boxes on both sides of the vehicle body) provided by this utility model;

[0025] Figure 3 A top view of a new energy commercial vehicle (with the power battery box located behind the driver's cab) provided by this utility model;

[0026] Figure 4 A side view of a new energy commercial vehicle (with the power battery box located behind the driver's cab) provided by this utility model;

[0027] Figure 5 A simplified diagram showing the connection of functional components for a new energy commercial vehicle provided by this utility model.

[0028] The components are as follows: 1-Vehicle body; 2-Support frame; 3-Power battery box; 4-Wiring harness connection port; 5-Drive motor; 6-Motor controller MCU; 31-Power battery unit; 32-Vehicle power management unit; 33-High voltage charging and discharging unit; 311-Battery pack; 312-Battery management system (BMS); 321-Energy management system (EMS); 322-Vehicle controller (VCU); 331-High voltage distribution box (PDU); 332-On-board charger (OBC). Detailed Implementation

[0029] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0030] See appendix Figure 1-5 This utility model discloses a new energy commercial vehicle, including: a vehicle body 1, a power battery box 3, and a drive motor 5;

[0031] A support frame 2 is fixedly connected to the vehicle body 1, and a wiring harness connection port 4 connected to the control panel inside the driver's cab is provided at the rear of the cab.

[0032] There are two power battery boxes 3, both of which are securely connected to the support frame 2. The power battery box 3 integrates a complete charging and discharging management system, which includes: a power battery unit 31, a vehicle power management unit 32, and a high-voltage charging and discharging unit 33. The power battery unit 31 is connected to the vehicle power management unit 32 and the high-voltage charging and discharging unit 33 through signal lines and high-voltage wiring harnesses. The vehicle power management unit 32 and the high-voltage charging and discharging unit 33 are connected through signal lines. The vehicle power management unit 32 is connected to the wiring harness connection port 4 through signal lines.

[0033] The drive motor 5 is installed at the rear wheel position of the vehicle body 1 and is connected to the rear wheel of the vehicle body 1 for transmission. The drive motor 5 is connected to the high-voltage charging and discharging unit 33 corresponding to the two power battery boxes 3 through high-voltage wiring harnesses.

[0034] In some embodiments, support frames 2 are fastened to both sides of the vehicle body 1, and there are two power battery boxes 3, which are respectively fixedly connected to the support frames 2 located on both sides of the vehicle body 1.

[0035] In other embodiments, the vehicle body 1 is rigidly connected to a support frame 2 behind its cab, and two power battery boxes 3 are arranged along the height direction and are both fixedly connected to the support frame 2.

[0036] In one embodiment, the power battery unit 31 includes a battery pack 311 and a battery management system (BMS) 312. The battery pack 311 and the BMS 312 are connected via signal lines. The BMS 312 is used to detect the voltage, current, and temperature parameters of each cell in the battery pack 311. This design ensures accurate monitoring of the battery pack 311's state, helps prevent problems such as overcharging, over-discharging, and overheating, extends battery life, and improves battery safety and reliability.

[0037] In this embodiment, the vehicle power management unit 32 includes an energy management system (EMS) 321 and a vehicle controller (VCU) 322. The EMS 321 and VCU 322 are connected via signal lines, and the VCU 322 is connected to the battery management system (BMS) 312 via signal lines. This design achieves efficient management of vehicle energy, optimizes the distribution and use of electrical energy, and improves the vehicle's energy efficiency. Simultaneously, the connection between the VCU 322 and BMS 312 allows the vehicle to adjust power output according to battery status, enhancing overall performance.

[0038] In this embodiment, the high-voltage charging and discharging unit 33 includes a high-voltage distribution box (PDU) 331 and an on-board charger (OBC) 332. The PDU 331 is connected to the battery pack 311 via a high-voltage wiring harness and is also electrically connected to the vehicle controller (VCU) 322 via a signal line. The OBC 332 is connected to the PDU 331 via the high-voltage wiring harness. This simplifies the charging and discharging control process, improves charging efficiency and safety, and also facilitates centralized management and protection of the high-voltage circuit, reducing potential fault risks.

[0039] In some specific embodiments, a motor controller MCU 6 is also included. The motor controller MCU 6 is connected to the drive motor 5 and the high-voltage distribution box PDU 331 via high-voltage wiring harnesses. The motor controller MCU 6 is also connected to the battery management system BMS 312, the energy management system EMS 321, and the vehicle controller VCU 322 via electrical signals.

[0040] In some specific embodiments, the on-board charger 332 is electrically connected to the vehicle controller 322 to receive charging control commands.

[0041] In this embodiment, the vehicle controller VCU 322 acts as a central hub, coordinating the operation of various components.

[0042] In other embodiments, the two power battery packs 3 alternately supply power to the drive motor 5. When one power battery pack 3 fails, the other power battery pack 3 can seamlessly take over the power supply, ensuring continuous vehicle operation. This improves vehicle reliability and safety, ensuring continued operation even in the event of battery failure and reducing downtime caused by battery problems. It is particularly suitable for applications requiring high reliability, such as long-distance transportation.

[0043] In some other embodiments, the power supply to the two battery packs 3 can be manually switched. This provides the driver with additional control, allowing for manual intervention in special circumstances (such as automatic switching failure), enhancing the vehicle's flexibility and ability to respond to emergencies, and improving driving safety and convenience.

[0044] The specific principle and usage method of a new energy commercial vehicle provided in this embodiment are as follows:

[0045] Each power battery box 3 integrates a complete charging and discharging management system, including a power battery unit 31, a vehicle power management unit 32, and a high-voltage charging and discharging unit 33. The power battery unit 31 includes a battery pack 311 and a battery management system (BMS) 312, which is responsible for monitoring the battery status; the vehicle power management unit 32 includes an energy management system (EMS) 321 and a vehicle control unit (VCU) 322, which is responsible for energy distribution and vehicle control; the high-voltage charging and discharging unit 33 includes a high-voltage distribution box (PDU) 331 and an on-board charger (OBC) 332, which is responsible for power transmission and charging management.

[0046] The dual battery packs 3 are connected to the drive motor 5 via the motor controller MCU 6, alternately supplying power to the vehicle. When one battery pack 3 fails, the other seamlessly takes over the power supply, ensuring continuous vehicle operation. This design not only improves the vehicle's driving range but also enhances the system's reliability and safety. Furthermore, the power supply from the two battery packs 3 can be manually switched, providing the driver with additional control and enhancing the vehicle's flexibility and ability to respond to emergencies.

[0047] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A new energy commercial vehicle, characterized in that, include: The vehicle body (1) is fixedly connected to a support frame (2), and a wiring harness connection port (4) connected to the control panel in the cab is provided at the rear of the cab. The power battery box (3) consists of two units, both of which are securely connected to the support frame (2). The power battery box (3) integrates a complete charging and discharging management system. The charging and discharging management system includes a power battery unit (31), a vehicle power management unit (32), and a high-voltage charging and discharging unit (33). The power battery unit (31) is connected to the vehicle power management unit (32) and the high-voltage charging and discharging unit (33) via signal lines and high-voltage wiring harnesses. The vehicle power management unit (32) and the high-voltage charging and discharging unit (33) are connected via signal lines. The vehicle power management unit (32) is connected to the wiring harness connection port (4) via signal lines. The drive motor (5) is installed at the rear wheel position of the vehicle body (1) and is connected to the rear wheel of the vehicle body (1) via a transmission. The drive motor (5) is connected to the high-voltage charging and discharging unit (33) corresponding to the two power battery boxes (3) via a high-voltage wiring harness.

2. The new energy commercial vehicle according to claim 1, characterized in that, The power battery unit (31) includes a battery pack (311) and a battery management system (BMS) (312). The battery pack (311) and the battery management system (BMS) (312) are connected via signal lines. The battery management system (BMS) (312) is used to detect the voltage, current and temperature parameters of each cell in the battery pack (311).

3. The new energy commercial vehicle according to claim 2, characterized in that, The vehicle power management unit (32) includes an energy management system (EMS) (321) and a vehicle controller (VCU) (322). The energy management system (EMS) (321) and the vehicle controller (VCU) (322) are connected via signal lines. The vehicle controller (VCU) (322) and the battery management system (BMS) (312) are connected via signal lines.

4. A new energy commercial vehicle according to claim 3, characterized in that, The high-voltage charging and discharging unit (33) includes a high-voltage power distribution box (PDU) (331) and an on-board charger (OBC) (332). The high-voltage power distribution box (PDU) (331) is connected to the battery pack (311) through a high-voltage wiring harness and is electrically connected to the vehicle controller (VCU) (322) through a signal line. The on-board charger (OBC) (332) is connected to the high-voltage power distribution box (PDU) (331) through a high-voltage wiring harness.

5. A new energy commercial vehicle according to claim 4, characterized in that, It also includes a motor controller MCU (6), which is connected to the drive motor (5) and the high-voltage distribution box PDU (331) via a high-voltage wiring harness. The motor controller MCU (6) is also connected to the battery management system BMS (312), the energy management system EMS (321), and the vehicle controller VCU (322) via electrical signals.

6. A new energy commercial vehicle according to claim 4, characterized in that, The on-board charger (OBC) (332) is electrically connected to the vehicle controller (VCU) (322) to receive charging control commands.

7. A new energy commercial vehicle according to claim 1, characterized in that, The vehicle control unit (VCU) (322) plays a central role in coordinating the operation of various components.

8. A new energy commercial vehicle according to claim 1, characterized in that, The two power battery boxes (3) alternately supply power to the drive motor (5). When one power battery box (3) fails, the other power battery box (3) can seamlessly take over the power supply to ensure the continuous operation of the vehicle.

9. A new energy commercial vehicle according to claim 8, characterized in that, The power supply of the two power battery boxes (3) can be switched manually.

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