A pure electric commercial vehicle cabin modular arrangement method

Abstract

The present application relates to the technical field of pure electric commercial vehicle chassis, and particularly discloses a pure electric commercial vehicle cabin modular arrangement method, S1, defining a single-layer paving arrangement principle, installing chassis accessories on a vehicle chassis frame; S2, adopting a high-low voltage separation principle, defining a high-voltage interface and a low-voltage interface of a controller; S3, defining an interface standardization principle, integrating and managing low-voltage wire harnesses and brake pipe interfaces; S4, installing an overall cabin module split packaging scheme; the present application realizes high integration and modularization of cabin module accessories and interfaces, ensures that there is no obstruction above and below the controller and accessories, reduces the positioning of the cab assembly, increases the interior space of the cab, improves the modularization degree of the vehicle, reduces the variety of joints, improves the reliability of the whole vehicle, realizes offline split packaging of the cabin module, packs into a complete overall cabin module scheme, breaks the current process scheme of separate assembly of various components of new energy vehicles, and improves the vehicle assembly efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pure electric commercial vehicle chassis, in particular to a pure electric commercial vehicle cabin modular arrangement method. BACKGROUND

[0002] The pure electric vehicle chassis accessories mainly include: a multi-in-one integrated controller, an MCU, a BMS, an electric steering oil pump, an electric air compressor, an air treatment unit, an air cleaner, a low-voltage storage battery, and an air conditioner compressor.

[0003] 1. The cabin module is located at the bottom of the pure electric commercial vehicle cab, and is a power accessory module arranged by integrating a multi-in-one integrated controller, a low-voltage storage battery, an integrated auxiliary machine, an air treatment unit, an air conditioner compressor and the like.

[0004] 2. The multi-in-one integrated controller is a controller integrating functions of high-voltage power distribution, steering oil pump DC / AC, air pump DC / AC, DC / DC, main drive motor controller, and insulation detector, and has four-in-one, five-in-one, six-in-one and the like according to the number of integrated functions.

[0005] 3. The integrated auxiliary machine integrates an electric steering oil pump and an electric air compressor, and shares one motor for driving.

[0006] 4. The MCU is a motor controller.

[0007] 5. The BMS is a power battery management system.

[0008] In the prior art, there are mainly two arrangement schemes of up-down stacking and two sides of the frame longitudinal beam:

[0009] Scheme one: up-down stacking arrangement

[0010] The electric steering oil pump is arranged above the left longitudinal beam 1 of the frame, the air conditioner compressor is arranged above the right longitudinal beam 2 of the frame, the low-voltage storage battery is arranged outside the right longitudinal beam 2 behind the axle, and the air treatment unit is arranged inside the left longitudinal beam 1 of the chassis. The bottom of the cab is arranged in three layers, the multi-in-one integrated controller and the BMS are arranged from front to back on the uppermost layer, the MCU is arranged on the middle layer, and the electric air compressor and the air cleaner are arranged on the bottom layer. The specific arrangement is shown in FIG. 1 and FIG. 2. Figure 1 and FIG. 2. Figure 2 .

[0011] Disadvantages of scheme one:

[0012] 1. Poor maintainability: the multi-in-one integrated controller, the MCU and the electric air compressor are arranged in an up-down stacking manner, when the MCU is maintained, the multi-in-one integrated controller and its bracket, the high-low voltage wire harness and the cooling pipeline need to be removed at the same time. Among them, the current market demand for motor peak power is large, the diameter of the main drive direct current high voltage wire connected with the multi-in-one integrated controller and the MCU is relatively thick (150mm2 ), difficult to disassemble. The electric air compressor and air filter are arranged on the bottom layer, and the filter element is difficult to replace. The air compressor needs to be disassembled and repaired under the maintenance station trench.

[0013] 2. Poor appearance of wire harness arrangement: The existing MCU, all-in-one integrated controller and BMS interface are not defined according to the high and low voltage wire harness arrangement and trend demand, and the high and low voltage wire harness and cooling pipeline exist mutual intersection, and the wire harness appearance is poor.

[0014] 3. Poor reliability: The high and low voltage wire harness and cooling pipeline have no clear arrangement planning and trend area division, and after the layered arrangement of chassis accessories, the high and low voltage wire harness arrangement exists intersection, long connection path problem, and does not guarantee sufficient physical space isolation and protection, easy to appear signal interference, error frame message, abnormal drop high voltage and electromagnetic compatibility problem, and serious time will cause vehicle stop.

[0015] 4. Low assembly efficiency: The electric air compressor, MCU, all-in-one integrated controller, BMS and other chassis accessories need 8 kinds of installation supports for fixation and cannot be disassembled offline, and the chassis assembly process is poor.

[0016] Scheme two: arranging on both sides of the frame longitudinal beam

[0017] The electric steering oil pump is arranged above the left frame longitudinal beam 1, the air conditioner compressor is arranged above the right frame longitudinal beam 2, the low voltage storage battery is arranged outside the right longitudinal beam 2 behind the axle, the electric air compressor is arranged outside the left longitudinal beam 1 behind the axle, and the air treatment unit is arranged inside the left longitudinal beam 1 of the chassis. The all-in-one integrated controller, BMS and MCU are arranged at the bottom of the cab. The specific arrangement is shown in the attached Figure 3 and attached Figure 4 .

[0018] Disadvantages of scheme two

[0019] 1. Low space utilization: The chassis accessories are scattered and arranged on both sides of the frame longitudinal beam and the bottom of the cab, and the space utilization of the bottom of the cab is low.

[0020] 2. Low reliability: The electric air compressor is arranged outside the left frame longitudinal beam 1, the high and low voltage interfaces and wire harness connecting the all-in-one controller and the electric air compressor are exposed, the protection performance is poor, and it is easy to be damaged.

[0021] 3. Long vehicle pipeline: The chassis accessories are scattered and arranged, according to the arrangement principle of high and low voltage wire harness and pipeline, the wire harness and pipeline path is long, and a large number of fixing points need to be increased, the weight and cost rise.

[0022] Therefore, it is necessary to design a machine cabin module arrangement method which can improve the space utilization of the whole vehicle, high integration and convenient maintenance, in order to solve the problems of scattered arrangement of machine cabin module chassis accessories, poor maintainability, poor reliability, low space utilization and poor appearance. SUMMARY

[0023] In view of the problems in the prior art, the purpose of the present application is to provide a pure electric commercial vehicle engine compartment modular arrangement method.

[0024] The technical scheme adopted by the present application to solve its technical problems is: a pure electric commercial vehicle engine compartment modular arrangement method, comprising the following steps:

[0025] S1, define a single-layer flat arrangement principle, and install chassis accessories on the vehicle chassis frame;

[0026] S2, adopt a high-low voltage separation principle, and define the high-voltage interface and low-voltage interface of the controller;

[0027] S3, define an interface standardization principle, and integrate and manage the low-voltage wire harness and brake pipe interface;

[0028] S4, install an engine compartment module integral disassembly scheme.

[0029] Preferably, the chassis accessories in step S1 include but are not limited to a multi-in-one integrated controller, a low-voltage storage battery, an integrated auxiliary machine, an air handling unit, an air cleaner, and an air conditioner compressor.

[0030] Preferably, the single-layer flat arrangement principle in step S1 in a left-hand drive vehicle: the air conditioner compressor is arranged above the front end of the left longitudinal beam of the frame, the air cleaner is arranged outside the front end of the right longitudinal beam of the frame, the low-voltage storage battery and the air handling unit, the integrated auxiliary machine, the multi-in-one integrated controller and other accessories are arranged in a single-layer flat arrangement with the same height, and the low-voltage storage battery, the air handling unit, the integrated auxiliary machine and the multi-in-one integrated controller are arranged in sequence according to the high-voltage path flow direction from the opposite direction of vehicle travel, and the high-voltage wire harness path is arranged to be the shortest.

[0031] Preferably, the single-layer flat arrangement principle in step S1 in a right-hand drive vehicle: the arrangement positions of the air conditioner, the steering mechanism and the brake mechanism are changed, which adjusts the orientation of the engine compartment module low-voltage storage battery and the integrated auxiliary machine, or exchanges the positions of the low-voltage storage battery, the air cleaner and the air handling unit, or adjusts the front and rear positions of each component.

[0032] Preferably, the controller in step S2 is a multi-in-one integrated controller, the multi-in-one integrated controller defines the high-voltage interface position and direction according to the accessory main drive and auxiliary drive arrangement and the high-voltage flow direction, and controls the high-low voltage separation.

[0033] Preferably, the high-low voltage separation is to arrange the high-voltage wire on the left longitudinal beam, and arrange the low-voltage wire and pipe on the right longitudinal beam, or arrange the high-voltage wire harness on the right longitudinal beam, and arrange the low-voltage wire harness and pipe on the left longitudinal beam.

[0034] Preferably, the low-voltage wire harness and brake pipe interface integrated management in step S3 is integrated through an 18-pin low-voltage connector or an eight-pass-through-wall joint for standardized connection and modularization of the wire harness and the pipe.

[0035] Preferably, the cabin module integrated distribution scheme in step S4 is integrated at the bottom of the cab or arranged in the middle of the rear chassis of the cab.

[0036] Preferably, the different schemes of the all-in-one integrated controller include, but are not limited to, a four-in-one integrated controller, a five-in-one integrated controller, a six-in-one integrated controller, and an eight-in-one integrated controller.

[0037] A new energy vehicle adopting the pure electric commercial vehicle cabin modularization arrangement method of any one of claims 1-9.

[0038] The present application has the following beneficial effects:

[0039] The pure electric commercial vehicle cabin modularization arrangement method designed in the present application

[0040] 1. Maintenance convenience is improved: maintenance time is shortened by ≥50%, and a "flat arrangement" scheme is adopted, in which the four-in-one integrated controller, the integrated auxiliary machine, the 24V lithium battery, and the air handling unit are arranged on the same plane. When any component needs to be repaired, it does not affect other components, and the cab can be opened for repair, avoiding the problem that in the stacked arrangement scheme, the remaining components need to be removed when a faulty component needs to be repaired.

[0041] 2. Reliability is improved: the "high-low voltage separation" principle is defined, the high-voltage wire harness is arranged on the left longitudinal beam, and the low-voltage wire harness is arranged on the right longitudinal beam. The distance between the high-voltage wire harness and the low-voltage wire harness is >500mm, which avoids the electromagnetic interference problem of the high-voltage wire harness to the low-voltage wire harness from the source, and the high-low voltage wire harness and interface separation arrangement can improve the reliability of the high-voltage system and the whole vehicle network by ≥50%.

[0042] 3. Aesthetics is improved: according to the high-low voltage wire harness and pipe arrangement principle, the wire harness is arranged flatly, the wire harness arrangement is simplified and neat, and the high-voltage wire harness of a single vehicle is shortened by ≥5m. In the electric drive bridge technical route, the high-voltage main drive wire harness enters the inside of the left longitudinal beam of the vehicle frame in the shortest path, extends along the inside of the left longitudinal beam, and is connected with the electric drive bridge MCU. In the motor+AMT technical route, the main drive high-voltage three-phase wire is opposite to the three-phase wire interface of the drive motor, and is connected to the drive motor in the shortest path. The air conditioner compressor is arranged on the left side of the vehicle frame, and the auxiliary drive high-voltage wire harness of the all-in-one integrated controller enters the left longitudinal beam in the shortest path and is connected with the air conditioner compressor, the integrated auxiliary machine, and the PTC high-voltage components.

[0043] 4. Integration and light weight: The electric steering oil pump and electric air compressor are integrated, the battery is a lithium battery, the all-in-one integrated controller, integrated auxiliary machine, low-voltage battery and air treatment unit are arranged on the frame with damping effect, the separate fixing supports of each module are cancelled, the function and structure are highly integrated, and the weight is reduced by more than 140 kg.

[0044] 5. Modular arrangement: The space utilization rate of the whole vehicle is improved, the accessories on both sides of the chassis frame longitudinal beam are arranged in the cabin module, and the space of the cabin module is fully utilized. At the same time, the power battery expansion space on both sides of the chassis frame is increased, and the whole vehicle range expansion is improved. For large power demand, bottom battery replacement or side-mounted large-capacity power battery scheme can be used to reduce the gravity center of the whole vehicle.

[0045] 6. Interface standardization and generalization: The cabin module integrated arrangement is not limited by vehicle type, electric drive technology route and driving form, and can match all-in-one integrated controller (four-in-one, five-in-one, etc.), different power low-voltage battery, different power integrated auxiliary machine, etc., to ensure that the position and direction of each high-voltage wire harness interface are the same. At the same time, the fixed position and type of integrated low-voltage connector and brake pipe integrated joint are defined to ensure the universality and interchangeability between components.

[0046] 7. Indoor space improvement: The boundary size of the cabin module is unified for different vehicle types, and the positioning of the cab is reduced. The cab cancels the bulging structure at the engine compartment of the diesel vehicle, increases the indoor space of the cab, and improves the user driving comfort.

[0047] 8. Safety improvement: The high-voltage interface and high-voltage wire harness of the cabin module chassis accessories and controller are located at the bottom of the cab, which has good protection performance, avoids vehicle high-voltage system from being knocked during driving or being directly hit by water gun during washing, and improves the safety of the whole vehicle high-voltage system. BRIEF DESCRIPTION OF DRAWINGS

[0048] Figure 1 is a top view of the prior art cabin stacked arrangement.

[0049] Figure 2 is a side view of the prior art cabin stacked arrangement.

[0050] Figure 3 is a top view of the prior art cabin frame longitudinal beam arrangement.

[0051] Figure 4 is a side view of the prior art cabin frame longitudinal beam arrangement.

[0052] Figure 5 is a top view of the pure electric commercial vehicle cabin modular arrangement.

[0053] Figure 6This is a schematic diagram of an embodiment of the modular layout of the engine compartment in a pure electric commercial vehicle.

[0054] In the diagram: 1 - left longitudinal beam; 2 - right longitudinal beam. Detailed Implementation

[0055] The technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0056] like Figures 5-6 As shown, a modular layout method for the engine compartment of a pure electric commercial vehicle includes the following steps:

[0057] S1. Define a single-layer flat layout principle, and install chassis accessories on the vehicle chassis frame; chassis accessories include, but are not limited to, multi-integrated controller, low-voltage battery, integrated auxiliary equipment, air handling unit, air filter, and air conditioning compressor.

[0058] S2. Adopting the principle of high and low voltage separation, the high voltage interface and low voltage interface of the controller are defined; the controller is a multi-in-one integrated controller. The multi-in-one integrated controller defines the position and direction of the high voltage interface according to the arrangement of the main and auxiliary drives of the accessories and the high voltage flow direction, and controls the separation of high and low voltage.

[0059] S3. Define interface standardization principles to integrate and manage low-voltage wiring harnesses and brake piping interfaces; use highly integrated 18-pin low-voltage connectors or eight-way wall connectors for standardized connection and modular assembly of wiring harnesses and piping.

[0060] S4. The installation adopts an integrated modular assembly scheme for the engine compartment, which is either integrally located at the bottom of the cab or integrally arranged in the middle of the chassis behind the cab.

[0061] In left-hand drive vehicles, the single-layer flat layout principle is as follows: the air conditioning compressor is located above the front end of the left longitudinal beam 1 of the frame, the air filter is located on the outside of the front end of the right longitudinal beam of the frame, and the low-voltage battery, air handling unit, integrated auxiliary machine, multi-in-one integrated controller and other accessories are laid out in a single layer at the same height. According to the high voltage path flow, the low-voltage battery and air handling unit, integrated auxiliary machine and multi-in-one integrated controller are arranged in sequence from the opposite direction of vehicle travel, with the high voltage wiring harness arranged with the shortest path.

[0062] In right-hand drive vehicles, the single-layer flat layout principle causes changes in the arrangement of mechanisms such as air conditioning, steering, and braking. This may require adjustments to the orientation of the low-voltage battery and integrated auxiliary equipment in the engine compartment module, or swapping the positions of the low-voltage battery, air filter, and air handling unit, or adjusting the front-to-back positions of various components.

[0063] High and low voltage separation makes high voltage line left side beam 1 arrangement, low voltage line and pipeline right side beam 2 arrangement, or high voltage line bundle arrangement in right side beam 2, low voltage line bundle and pipeline arrangement in left side beam 1.

[0064] Different schemes of multi-in-one integrated controller include but are not limited to four-in-one integrated controller, five-in-one integrated controller, six-in-one integrated controller and eight-in-one integrated controller.

[0065] Low voltage battery, 24V lithium battery or 48V lithium battery, 24V lead-acid battery, 48V lead-acid battery and other low voltage energy storage devices with different voltages and different technical routes are arranged.

[0066] A new energy vehicle adopting the pure electric commercial vehicle cabin modular arrangement method of any one of claims 1-9.

[0067] All components and arrangement requirements of pure electric vehicle models arranged on the chassis are integrated by using a system integration scheme (integrating auxiliary machines, drive motors, MCUs, battery frames and BMSs), a single-layer flat arrangement scheme is followed, and the cabin module is newly planned according to the high and low voltage line bundle and pipeline arrangement principle. Meanwhile, based on the high and low voltage separation and pipeline separation principle of the whole vehicle, the high and low voltage interface position and direction of the chassis accessories (including multi-in-one integrated controller, integrated auxiliary machine, etc.) are newly defined, and the height integration and modularization of the chassis accessories and interfaces are realized.

[0068] 1. Arrangement principle: according to the function of the system and components arranged in the front section of the vehicle, the function and interface position of the cabin module are newly defined according to the principle of high and low voltage separation and single-layer flat arrangement, and the cabin module is designed and sub-assembled according to the modular scheme.

[0069] 2. Function and structure integration: integrated auxiliary machines, battery frame integrated BMS and drive motor integrated MCU scheme are adopted. Considering the integrated arrangement, the whole vehicle is divided into "cabin module", "energy storage module" and "drive module", the cabin module integrates multi-in-one integrated controller, low voltage battery, integrated auxiliary machine, air conditioner compressor, air treatment unit, air cleaner, etc., the accessory arrangement is highly integrated, and the space under the cab is fully utilized.

[0070] 3. Single-layer flat arrangement: considering the maintenance convenience, avoiding mutual interference or shielding of each accessory during maintenance, according to the arrangement space under the cab of the whole vehicle and the characteristics of new energy vehicle without engine, the "single-layer flat" arrangement idea is proposed, the limit boundary of the cabin module and the size of the chassis accessories are defined, all controllers and accessories are arranged on the same layer, and the accessories are arranged at the same height, which ensures that there is no shielding above and below the controller and accessories, and reduces the positioning of the cab assembly and increases the interior space of the cab.

[0071] 4. High and low voltage separation: considering electromagnetic compatibility, avoid low voltage in the process of work by high voltage system interference, put forward "high and low voltage separation" layout ideas, define high voltage wire harness left side rail 1 layout, low voltage wire harness right side rail 2 layout scheme, avoid electromagnetic interference from the root.

[0072] 5. Shortest path layout: considering high voltage wire harness, low voltage wire harness, cooling pipeline and brake pipeline layout, according to high and low voltage wire harness and pipeline layout principle, the cabin module layout is newly planned, "shortest path layout" principle is put forward, which realizes that high and low voltage wire harness and pipeline layout and trend are more reasonable and smooth, at the same time, the length of pipeline bundle is shortened, and the cost of whole vehicle is reduced.

[0073] 6. Integrated interface: the low voltage wire harness of cabin module adopts integrated scheme, the standardized interface of cabin module low voltage wire harness is newly defined, and a highly integrated low voltage connector is used to dock with the whole vehicle. Similarly, the brake pipeline of cabin module adopts highly integrated multi pass wall joint connection scheme, different vehicle models can be connected with cabin module accessories in fixed position by using the same connector, the modularization degree of vehicle is improved, the variety of joint is reduced, and the reliability of whole vehicle is improved.

[0074] 7. Cabin modular overall subassembly: based on the integrated arrangement of chassis accessories, the integrated connection scheme of wire harness and pipeline is realized, the cabin module is subassembled offline, and is packaged into a complete integral cabin module scheme, so that the current process scheme that each component of new energy vehicle model is assembled separately is broken, and the assembly efficiency of whole vehicle is improved.

[0075] Embodiment one:

[0076] The air conditioner compressor is arranged on the front end of the left side rail 1 of the vehicle frame, the air cleaner is arranged on the front end of the right side rail 2 of the vehicle frame, and the remaining components are arranged in the opposite direction of vehicle driving, in sequence, as the low voltage storage battery and air treatment unit, integrated auxiliary machine and multi-in-one integrated controller.

[0077] The positions and directions of high and low voltage and cooling interfaces of the multi-in-one integrated controller are defined, the main positive, main negative and main drive high voltage interfaces are horizontally backward, the auxiliary machine interface is horizontally left, and the low voltage wire harness and cooling water port are horizontally right. When the electric drive bridge technical route is adopted, the high voltage main drive wire harness enters the inside of the left side rail 1 of the vehicle frame in the shortest path, extends along the inside of the left side rail 1 and is connected with the electric drive bridge MCU. When the motor + AMT technical route is adopted, the main drive high voltage three-phase wire is opposite to the three-phase wire interface of the drive motor, and is connected to the drive motor in the shortest path. The air conditioner compressor is arranged on the left side of the vehicle frame, and the auxiliary drive high voltage wire harness of the multi-in-one integrated controller enters the left side rail 1 in the shortest path and is connected with the air conditioner compressor, integrated auxiliary machine and PTC and other high voltage components.

[0078] The low-voltage wire harness of the cabin module adopts an integrated scheme, considers different vehicle configuration changes and multi-in-one integrated controllers, integrated auxiliary machines, air conditioning compressors, air handling units and other functional expansion requirements, adopts a highly integrated 18Pin pin low-voltage connector for docking with the whole vehicle, is arranged at a right side position of the integrated auxiliary machine, and the wire harness between the connector and components is fixed firmly by using a support, so that assembly consistency of the whole cabin module is ensured.

[0079] Considering differences of the integrated auxiliary machine for different drive form vehicles and different configurations and compatibility of subsequent functional expansion, an eight-way integrated wall connector is selected, the connection between the wall connector and the integrated auxiliary machine and the air handling unit is fixed offline, the wall connector is arranged at a left front side of the low-voltage storage battery, and the whole vehicle brake air circuit is only docked with the wall connector fixed at the position.

[0080] The present application is not limited to the above-mentioned embodiments, and anyone should know that structural changes made under the inspiration of the present application fall within the protection scope of the present application.

[0081] The technical, shape and structure parts not described in detail in the present application are all known technologies.

Claims

1. A method of pure electric commercial vehicle engine compartment modularization arrangement, characterized in that, Comprise the following steps: S1, define the single-layer paving arrangement principle, install the chassis accessories on the vehicle chassis frame; S2, adopt the high-low voltage separation principle, define the high voltage interface and low voltage interface of the controller; S3, define the interface standardization principle, integrate and manage the low voltage wire harness and brake pipe interface; S4, install the whole cabin module integral disassembly scheme; The chassis accessories in step S1 include the all-in-one integrated controller, low voltage storage battery, integrated auxiliary machine, air treatment unit, air filter, air conditioner compressor; The single-layer paving arrangement principle in step S1 in the left-hand drive vehicle: the air conditioner compressor is arranged above the front end of the left longitudinal beam of the frame, the air filter is arranged outside the front end of the right longitudinal beam of the frame, the low voltage storage battery, air treatment unit, integrated auxiliary machine and all-in-one integrated controller accessories are arranged in a single layer and are arranged in a flat manner, and the low voltage storage battery, air treatment unit, integrated auxiliary machine and all-in-one integrated controller are arranged in sequence according to the high voltage path flow direction from the opposite direction of vehicle driving, and the high voltage wire harness path is arranged to be the shortest; The controller in step S2 is the all-in-one integrated controller, the all-in-one integrated controller defines the high voltage interface position and direction according to the accessory main drive and auxiliary drive arrangement and high voltage flow direction, and controls the high-low voltage separation; The low voltage wire harness and brake pipe interface integrated management in step S3 is realized through the 18Pin low voltage connector and eight through-wall joints, which are used for standardized connection and modular disassembly of the wire harness and pipe; The whole cabin module integral disassembly scheme in step S4 is integrated at the bottom of the cab or arranged in the middle part of the rear chassis of the cab.

2. The method of claim 1, wherein, The single-layer paving arrangement principle in step S1 in the right-hand drive vehicle: the arrangement positions of the air conditioner, steering and brake mechanisms are changed, which can adjust the direction of the cabin module low voltage storage battery and integrated auxiliary machine, or exchange the positions of the low voltage storage battery, air filter and air treatment unit, or adjust the front and rear positions of the components.

3. The method of claim 1, wherein, The high-low voltage separation is to arrange the high voltage wire on the left longitudinal beam, arrange the low voltage wire and pipe on the right longitudinal beam, or arrange the high voltage wire harness on the right longitudinal beam and arrange the low voltage wire harness and pipe on the left longitudinal beam.

4. The method of claim 1, wherein, The all-in-one integrated controller adopts the four-in-one integrated controller, five-in-one integrated controller, six-in-one integrated controller and eight-in-one integrated controller.

5. A new energy vehicle adopting the pure electric commercial vehicle cabin modular arrangement method according to any one of claims 1-4.

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