KR20200063396A - Integrated Flatform Chassis Where Battery, Motor and Frame are Integrated Into One - Google Patents

Abstract

The purpose of the present invention is to provide a flatform chassis, which is a three-in-one frame in which a battery, that is an energy source, and a motor, that is a power source, are accommodated and mounted inside an automobile chassis frame, thereby solving a problem with a technique for a chassis structure, which is a conventional structure frame of an electric vehicle. The flatform chassis has a large-capacity battery and a motor accommodated therein to remove a separate battery and motor installation space, thereby optimizing a power train installation space, and can be reduced in the weight, thereby increasing fuel efficiency and further ensuring the degree of freedom of vehicle design. In addition, the flatform chassis has the large-capacity battery stacked in a floor pan portion of a vehicle and can increase the thermal stress of a chassis structure through a combination of air-cooling and water-cooling systems or a phase change cooling system using an empty space between fine tubes, thereby improving the cooling efficiency of the battery and the motor.

Description

Integrated Flatform Chassis Where Battery, Motor and Frame are Integrated Into One

The present invention is an electric vehicle battery (battery) and the power source of the motor (motor) and the vehicle's structural frame (frame), the chassis (chassis) three parts are integrated into one trinity (三位一体) integrated or integrated chassis (chassis) , Chassis, 車臺) It is related to the structure of a flatform chassis (hereinafter referred to as “trinity” flat type chassis is used in the same sense as “integrated” flat type chassis).

The flat undercarriage consists of two thin outer layers of relatively high strength material (steel plate, aluminum plate, etc.) on both sides of the thick core layer of a bundle tube (tube) that is multi-focused on a light and low strength hollow tube. It is a sandwich beam shape panel of a triple layer structure that overlaps the outer layer + middle layer + outer layer with padding to express high-strength and high-rigidity material properties.

The flat core, which is a tri-integrated chassis where the energy source, power source, and frame are integrated into one by storing a large-capacity battery in the hollow core of the middle layer (core) and placing a positive sine hollow tube on the center axis of the chassis (chassis) to store the serial motor. The chassis (flatform chassis) can increase the inertia moment and the shear stress of tension, torsion, bending, compression, etc., and reduce material cost and ensure freedom of vehicle design.

The car is a structure that can withstand vehicle weight and external loads, and the initial car was a simple structure in which a cabin for loading people and objects and a drive shaft equipped with springs and wheels hung on a ladder-type structural frame below.

In the early automobiles, the roles and distinctions between the body (body) and the frame-in chassis (Chassis) were clear, but as the automobile manufacturing technology evolves and improves day by day, the distinction between the body and the chassis of the chassis is blurring. Chassis structures of type and type are known and manufactured.

Chassis, which is a frame for automobile structures, has a sub-frame to increase warpage rigidity, or attaches various accessories to the body woven in various materials and shapes for weight reduction, and the structure of the chassis is changing and developing. The main parts including the power train, steering system, suspension, and drive shaft, and the frame for supporting it, are the general parts except the body).

Chassis or frame must be secured with strength and rigidity that can withstand bending, torsion, and vibration caused by road shocks or vehicle loads while driving, and it is necessary to secure safety. And manufacturing productivity should be high.

Chassis, which is a structural frame of a car developed from an existing internal combustion engine, comes in several types depending on the car type, application, driving and suspension method, and is generally H-shaped frame, X-shaped frame, back-born frame, and platform. There are a type frame, a trust type frame, and the like.

In general, in today's automobile structure, the chassis (car chassis) and the body (car body) are formed as an integral structure, and the'monocoque' method, in which the external panel itself acts as a brace, and the frame structure constituting a separate skeleton serve as a stand. Is divided into'Body on frame'.

The monocoque type, which has a rigid external structure like crustaceans, forms an integral structure of a chassis and a body, dispersing the impact well, so that it has less noise and vibration, and has good riding comfort.It is used first in aircraft chassis before being applied to automobiles. The frame structure removes the frame's skeleton, and instead, the outer body is entangled with a solid structure to maintain rigidity.

Monocoque, also known as ``Unibody,'' refers to an integrated chassis made of a single piece from the roof to the floor of the vehicle, and the production method is relatively simple. It has good characteristics of riding comfort by reducing noise and vibration by dispersing shock well.

On the other hand, some sport utility vehicles (SUVs) and vehicles such as buses and trucks use a'frame chassis' in which the lower frame can handle most of the impact and load by using a body-on-frame method in which the body is mounted on the chassis. Excellent stiffness and good durability.

All of the above structures are structures developed according to the characteristics of an internal combustion engine, and are based on fossil fuel energy sources and power trains such as engines, reducers and clutches, which are power sources, but chassis for electric vehicles represented by batteries and motors. (Undercarriage) requires a new shape chassis optimized for electric vehicles that exhibit light weight, high-strength, and high-rigidity characteristics to improve fuel efficiency.

On the other hand, the in-wheel motor in which the electric motor that generates the driving force is located in the hub of the tire wheel has a high degree of freedom in design, and it has the advantage of removing the motor installation space from the chassis and removing the drive shaft and differential gear. , Because the motor is located under the suspension and moves up and down like a car wheel, the load holding is deteriorated due to the increase in the inertia force, and the wheel weight increases and the vibration transmitted to the vehicle body through the spring decreases riding comfort.

In particular, the in-wheel motor is equipped with a motor in a location where the vibration is the most severe due to road impact, and in addition to durability problems, the motor is mounted in a narrow space inside the wheel, resulting in heat dissipation, light weight, and moisture resistance. High efficiency, high performance, and durability are secured by acting as a very unfavorable factor for cooling the motor, such as heat loss due to loss of hysteresis and loss of hysteresis of rotor permanent magnets and rotor permanent magnets due to winding resistance of stator coils and air-cooled closed structure due to difficulty in cooling water piping. It is difficult, and commercialization is delayed.

Republic of Korea Registered Patent 10-1127736, In-wheel motor wheel structure (applied on December 08, 2010)

The object of the present invention is to solve the problems of a conventional electric vehicle chassis structure, a battery that is an energy source and a motor that is a power source is a trinity-type frame that is stored and stored inside a chassis that is a structural frame of a vehicle or a “flat vehicle (扁平型車臺, flatform chassis).

In addition, by devising a method for storing and storing batteries and motors optimized for a tri-integrated platform, it is a means to improve the shape structure and improve productivity of current electric vehicles in which the battery and motor parts are mounted and assembled separately at different locations on the frame or chassis. It is to improve the performance of automobiles, reduce cost and improve safety by providing.

In order to achieve the above object, the present invention is basically a chassis frame which is a structural frame that is a chassis for a basic structure of a vehicle, a frame that constitutes a chassis; A positive sine wave hollow tube penetrating the chassis portion vertically and storing a motor portion; And a plurality of bead portions for transverse reinforcement; It is composed of, the frame is a hollow (hollow) tube (hollow) tube (center) horizontally, three or more multi-stage, and hexagonal lattice-shaped member focused on the middle layer (core), and of the intermediate layer On both sides, two thin plates made of a high-strength material (such as a steel plate or an aluminum plate) form an outer layer on both sides, and a core of the fine tube is a filler supporting the plate, which is the outer layer ( As a filler), it stabilizes the outer layer against wrinkles or buckling, and assists the ultra-fine tube in the empty space between the hollow mesial tube as the intermediate layer and between the mesial tube and the outer layers on both sides. An integrated flat-type undercarriage characterized by being formed of a triple layer structure of the intermediate layer composed of a double-sided outer layer of the plate, the focusing-type deep-seated pipe, and an auxiliary filling pipe by filling the empty space more tightly by inserting a filling pipe.臺, flatform chassis).

As another aspect of the present invention, the positive sine wave hollow tube, which is a hollow corrugated pipe for storing the motor part, has 36 circumferentially shaped pleats in the circumferential direction, and corrugated floors and valleys are longitudinally oriented in the frame. Placed in the vertical direction on the central axis of the central portion of the frame to face toward, and the reinforcing bead portion has a cross section of an arch shape, and a plurality of pieces in the horizontal direction of the frame are perpendicular to the upper and lower surfaces of the mesial tube To form an intermediate layer together with the mesial tube, a rim beam is added to the edge of the frame, and the rim beam is a structural member of a WF beam cross-sectional shape, joined to both outer layers of the frame to provide axial external force or It supports the load and increases shear stress such as tensile, torsion, bending, compression, etc., and the outer layer is formed by assembling according to the shape of the reinforcing bead portion of the intermediate layer, and the outer layer is formed by joining the intermediate layer. It is characterized by forming a sandwich panel (sandwich panel) shaped structure.

As another aspect of the present invention, in the plurality of fine tubes forming the intermediate layer of the frame, a cylindrical standard battery is stored in series to form an energy unit for driving a motor and an electric device, and the amount on the central axis of the frame in the vertical axis direction. The sinusoidal hollow tube has a diameter equal to or more than twice the thickness of the core of the mesial tube, and stores a serial motor as a driving source of the vehicle inside the hollow tube, and the space between the mesial tubes fills the auxiliary filling tube to flow air. As a passage (channel), the remaining empty space between the centripetal tube and the auxiliary filling tube is filled with cooling water or a phase change material, and the auxiliary filling tube is used as a cooling air flow tube that releases heat to the outside atmosphere. By forming a cooling system of heat exchange with the heat sink function, the motor part as a driving source stored in the positive sine wave hollow tube, a battery part as an energy source accommodated inside the mesial tube, the mesial tube and the auxiliary filling tube, and It characterized in that the frame with the heat-radiating plate on both sides of the outer layer is integrated into one chassis.

Another aspect of the present invention, with respect to the reinforcing bead portion, the reinforcing bead portion having a cross section of the arch orthogonal to the mesial pipe, which is an intermediate layer, reinforces the intermediate layer (core) and distributes external force to the mesial pipe It has a function to function and a function as a place to install pins or bolts when a vehicle accessory is mounted on a chassis, and has four cylindrical cylinders and a plurality of bead nuts in three rows of cross-sections inside the reinforcing bead having the cross section of the arch. By providing a part, a hollow cylinder beam is inserted into the cylindrical cylinder to secure a support point, and the reinforcing bead is fastened with a bolt and a nut to join a vehicle body (body) and an accessory device, such as pins or bolts. Integrated flat type, characterized in that the fastening device does not penetrate the mesial tube to distribute stress concentration and local stress generated in holes or notches, etc. to the entire surface of the frame via the outer layer on both sides and the bead for reinforcement. Provide a chassis.

Another aspect of the present invention, with respect to the border beams at the edge of the frame, insert the outer layer on both sides of the frame on one side of the inner side of both sides of the border beam, overlap the flange of the border beam and the boundary surface of the frame or The edges are joined by fillet welding. On the other side of the rim, the steering and suspension arrangements on the wheel drive shaft, fender and body support, bonnet and front bumper installation, trunk and rear bumper installation, etc. It is joined to the body by means of rivets, bolts, welding, etc., and the empty space between the upper and lower flanges and the web outside the rim, the duct of the harness cable and the battery wiring cable, and the duct of the battery and the motor cooling pipe. To receive, and add a U-shaped channel beam (channel beam) to isolate the empty space from the outer surface, the flange and web of the frame beam, the flange and the web of the channel beam is combined to form a box beam (box beam) Characterized by forming the assembly beam.

As another aspect of the present invention, the battery mounted on the thin tube is stored in series in a battery socket provided with a lead wire of a negative (-) electrode, accommodated in the thin tube, and the fine core with a positive (+) electrode terminal at the end. Forming a battery module for tube storage, the battery module is a battery outlet connected to the power circuit, plus (+) terminal and minus (-) terminal is fastened in a concave-convex (凹凸) type, formed with a power management system (star) ) Is connected to the power supply, and the battery part of the car frame is divided into a battery storage space on the center side and a battery storage space on the side side, based on the positive sine wave hollow tube, which is the central axis. For base power, the center side center tube module is used for intermediate or peak power, but the center side center tube module is equipped with a detachable lead-in part equipped with a locking device on the frame so that it can be easily detached. It is characterized by enabling the addition and replacement of the battery.

As another aspect of the present invention, each battery module is connected to a main distribution & switching system (MDSS), and the main distribution & switching system (MDSS) has N inputs and M output lines as switches. Connected, it is composed of N×M switch elements, which are power semiconductor devices (PSDs) with bidirectional power switching (Matrix Switching) function of the matrix converter circuit function. Temperature, overcurrent, overvoltage, etc.), battery discharge and charging ordering, regenerative braking battery module designation, etc. are separated and assigned to each module to reduce the number of charge/discharge cycles of the battery cell, thereby extending the life and charging time. It provides an integrated flat-type undercarriage characterized in that to shorten.

In another aspect of the present invention, the series motor, which is a power source stored in the positive sine wave hollow tube, has a concave groove having a diameter of 10 mm circumscribed to the circumferential surface of the motor housing, and the positive sine wave. It is equipped with 36 concave concave grooves that are formed by the concave grooves of the sinusoidal wave inside the hollow pipe, and is used as a space for storing the cooling piping, coil wiring, and pads for shock insulation, but with six water cooling cooling system piping pipes. Six air-cooled cooling system air pipes, twelve motor coil guide parts and twelve shock insulation pads are housed, but the elastic rubber shock absorbing pads for vibration and shock absorption purposes are √2 times the storage groove diameter of 10mm. (1.4142) With the thickness, the elastic compression capacity is secured, pulled and inserted into the uneven groove, and then the motor is fixed in such a way as to restore elasticity, without bolts or wedges causing stress concentration. It provides an integrated flat chassis, characterized in that the motor part is stored, and the rotational vibration of the motor and the rolling vibration of the wheel are isolated from each other, thereby reducing fatigue of the motor and the frame structure.

In another aspect of the present invention, the series motor, which is a power source stored in the sine wave hollow tube, drills the outer layer of the frame and the sine wave hollow tube where the motor axis of rotation intersects the wheel axis in an orthogonal direction. ), equipped with a drive gear take-out on the front wheel, rear wheel, front and rear wheels, double helical gear (double helical) to combine the front wheel, rear wheel or four-wheel drive with one serial motor, to remove the axial load on the drive shaft of the serial motor unit gear) as a driving gear part of the power system (power train), and between the drive gear part and the differential gear part of the serial motor part, a matching gear part consisting of a double helical gear and an auxiliary shaft (Aux. shaft) An integrated type characterized by separating the series motor part and the wheel part by placing a gear), raising the origin (O) of the motor drive shaft, pulling down the constant ratio, and matching the load impedance (Z). Provide a flat undercarriage.

Further, another aspect of the present invention, in order to maximize the conduction and convection, which is the process of heat transfer of the battery, the battery is distributedly stored in the entire tube to increase the heat dissipation area, the space between the tube, and the tube and the tube By filling the auxiliary filling pipe in the space between the outer layers, the heat conduction and convection area of the battery is enlarged to expand the heat dissipation area of 1.62π (5.08) times the radius of the mesial tube (R), and the outer layers of both sides contacting the external atmosphere ( Face) is used as a heat sink, and the space between the mesial tube and the auxiliary filling tube is connected to an air flow tube (tube) having an intake port and an exhaust port, and an axial flow blower is added to blow gas in the axial direction of the flow tube. Provided is an integrated flat chassis that features air-cooled cooling of a battery cooling system that heats by driving with external energy when the temperature rises.

In addition, another aspect of the present invention, in addition to the air-cooled cooling method of the battery cooling system, a water-cooled cooling method for introducing water as a coolant into the empty space between the meticulous tube and the auxiliary filling tube for storing the battery, In order to further improve the heat exchange effect of heat storage and heat dissipation, a phase change material cooling method for injecting phase change materials such as paraffin and ionic compounds, and forcibly blowing the auxiliary fill tube with an axial flow blower, the meticulous tube and the By using the auxiliary fill tube as a heat sink for heat exchange, it is based on an air-cooled cooling method that releases heat to the outside atmosphere, but in combination with a water-cooled or phase-change material cooling method, a combination of air-cooled and water-cooled, or air-cooled and phase-change material cooling It provides an integrated flat chassis, characterized in that the cooling efficiency is improved by a hybrid cooling method of a combination of methods.

Another aspect of the present invention does not contain the serial motor, which is a vehicle driving source, inside the sine wave hollow tube on the central axis in the longitudinal axis direction, and the three, four, five, and four mesial tubes 100 are horizontally disposed. A stack of dogs, three, and concentrating a plurality of auxiliary filling pipes in a hexagonal lattice shape, add 19 of the above battery modules, and a radial motor (radial motoor) as an electric vehicle power source in the bonnet on the front side of the chassis frame and the trunk on the rear side of the chassis frame. ) Or an in-wheel motor is installed inside the wheel as an external chassis frame, but the power train of the radial motor is a dashboard seat and seat seat, and a reinforcement bead and a rim on the wheel drive shaft. A support system of an in-wheel motor equipped with a power system fixing part having a beam as a support point, a motor part, a wheel drive shaft, a differential gear part, a steering device, a suspension device, and the like, and installed inside the wheel, the steering and suspension of the chassis frame The hollow part is inserted into eight cylindrical cylinders inside the reinforcement bead part of the device enclosing part to secure a support point, and bolted to the bead nut part arranged in three rows on the upper and lower sides to support the motor, steering and suspension, An in-wheel motor is provided with a driving power line and an inlet and an outlet of a cooling system, and a battery part that is an energy source stored inside the mesial tube, the mesial tube and the auxiliary filling tube, and the outer layers on both sides It provides an integrated flat chassis, characterized in that the frame using the heat sink is integrated into one chassis, and the motor unit, which is a power source, is installed as an external chassis.

Another aspect of the present invention is the position and the unevenness (형성) of the longitudinal positive sine wave hollow tube formed in the bottom pan (Floor Pan) of the flat undercarriage and the reinforcing bead portion and the edge beam formed in the horizontal direction A receiving pad or a CarPad, which is a wireless charging current collector for a vehicle, is placed in the yaw space of the elder brother, and the car pad is arranged in a hexagonal lattice shape with a circular secondary current collecting coil inside to charge the ground charging pad. B. Forming an electromagnetic circuit with the primary feeding coil of the power supply line on the road, charging the battery cell by receiving electric energy as electromagnetic waves or providing a wireless power transfer circuit for driving the motor. The thickness is equal to or less than the protruding height of the cross section of the arch shape of the positive sinusoidal hollow tube and the reinforcing bead portion 106, and the fixing of the car pad is fastened with a plurality of bolts to the bead nut portion arranged in three rows in the reinforcing bead portion And, the wiring cable of the car pad is accommodated inside the cylindrical cylinder of the reinforcing bead, and drawn out into the outer space of the rim beam around the outside of the chassis to connect the wireless power transmission system to the charging circuit and the main distribution exchange system. It provides an integrated flat-type chassis characterized in that provided.

Another aspect of the present invention is to change the arrangement direction of the mesial tube forming a vehicle chassis frame from a standard longitudinal direction to a horizontal direction, but bead reinforcement orthogonal to the mesial tube direction is arranged in the vertical direction, and the positive sine wave Provided is an integrated flat type undercarriage characterized by separating the hollow tube into a front wheel drive shaft and a rear wheel drive shaft, and driving the motor in three combinations: front wheel drive, rear wheel drive, and front and rear wheel drive.

Another aspect of the present invention is a hydrogen fuel cell vehicle that converts the thin tube forming a vehicle chassis frame into a hydrogen fuel storage tank and mounts a fuel cell, or A turbine engine vehicle that converts the fine pipe into a tank for storing gas or liquid fossil fuel, and mounts a small-diameter gas turbine on the positive sine wave hollow pipe, or an internal combustion engine vehicle equipped with an internal combustion engine engine on the bonnet, or Converting the mesial tube into a space for storing fossil fuels and batteries, and using the serial motor of the positive sine wave hollow tube and a gas turbine or an internal combustion engine in combination with a hybrid vehicle (HEV) or plug-in hybrid vehicle (PHEV) It provides an integrated flat-type chassis characterized in that.

In yet another aspect of the present invention, the ultra-compact fuel tank stored inside the mesial tube has a cylindrical body having an outer diameter (D) of 23 mm and a hemispherical shell convex portion of a radius (R) of 11.5 mm at both ends. , As a pressure vessel of a closed structure with a circular cross section, the circumferential stress of the cylindrical body (σ 실린더) is applied to the fuel tank, the meticulous tube, the auxiliary filling tube and the body of the quadruple material of the outer layer on both sides in a geometric shape. Dispersing, the axial stress (σ₂) of the hemispherical shell convex portion, in addition to the hemispherical shell convex portion which is an ideal form to withstand internal pressure, provides an integrated flat undercarriage characterized by dispersing into the web of the rim beam.

The “flatform chassis” of the present invention is a chassis that is a structural frame of an automobile, and stores and stores a large-capacity battery and a motor inside the chassis to remove a separate battery and motor installation space, thereby eliminating the powertrain installation space. By optimizing and reducing weight, it is possible to secure the technical characteristics of improving the rigidity of the chassis by realizing a geometric shape capable of further improving fuel efficiency and securing freedom of vehicle design.

In addition, a large-capacity battery is widely loaded on the floor pan part of the vehicle, and an air-cooled and water-cooled or phase-change cooling system that utilizes the empty space between the centers and the heat exchange system that uses the floor part of the vehicle in contact with outside air as a heat sink By suppressing the thermal strain caused by the thermal stress of the chassis structure, the battery cooling efficiency is improved and the material and weight center of the chassis can be placed below the origin of the wheel axis of rotation to improve vehicle stability. I can do it.

1 is a cross-sectional coefficient (S) and the relative efficiency of the various beam shapes.
2 is an enlarged cross-sectional view of a three-layered chassis.
3 is a plan view of a trinity-type flat chassis.
4 is a side view and a cross-sectional shape view of the flat undercarriage.
Fig. 5 is a sectional view (line A) of the flat undercarriage.
6 is a cross-sectional shape and side view (C line) of the flat beam frame beam.
7 is a cross-sectional view of the bead for reinforcement of the flat undercarriage.
8 is a cross-sectional view of the flat undercarriage motor unit.
9 is a shape diagram of the battery unit.
10 is a shape diagram of a battery socket and an outlet.
11 is a block diagram of a main distribution switch system.
12 is a view showing the mounting of the serial motor unit.
13 is a shape diagram of a matching gear portion and a differential gear portion.
14 is a system diagram of a battery cooling system.
15 is a shape diagram for each cooling method.
16 is a cross-sectional view of the battery module of the chassis external motor flat chassis.
Fig. 17 is a sectional view and a cross-sectional view of the wireless charging car pad.
18 is a shape view of a horizontal chassis.
19 is a diagram of a micro fuel tank.

Hereinafter, specific aspects of the present invention will be described in more detail. First, as a form of the most basic invention, one side of the present invention is a basic structure of a vehicle, the chassis portion being a structural frame that is a chassis, a frame that constitutes a chassis portion; A positive sine wave hollow tube penetrating the chassis portion vertically and storing a motor portion; And a plurality of bead portions for transverse reinforcement; It is configured to include. The frame is composed of a hollow tube (tube), a three-tiered multi-level, and a hexagonal lattice-shaped member composed of a core, and both sides of the intermediate layer are made of high-strength material. As two thin plates (steel plate or aluminum plate, etc.), an outer layer is formed on both sides. The core of the mesial tube acts as a filler supporting the plate, which is the outer layer, stabilizing the outer layer against wrinkles or buckling, and the middle layer is hollow The empty space between the centripetal tubes and between the centripetal tubes and the outer layers of both sides is filled with an auxiliary filling tube of the ultra-fine centrifugal tube to fill the empty space more tightly, and the outer layers of both sides of the plate material, the concentrating centripetal tube, and the auxiliary filling tube It is formed of a three-layer structure of the intermediate layer consisting of.

The positive sine wave hollow tube, which is a hollow corrugated tube for storing the motor part, has 36 circumferentially shaped corrugations in the outer diameter direction, and the central part of the frame so that the corrugated floors and valleys face the longitudinal direction of the frame. It is placed vertically on the central axis.

In addition, the reinforcing bead portion has a cross section of an arch shape, and a plurality of pieces in the horizontal direction of the frame are added to the upper and lower surfaces of the mesial tube to be orthogonal to the mesial tube to form an intermediate layer together with the mesial tube.

A rim beam is added to the edge of the frame, and the rim beam is a structural member of a WF beam cross-section, bonded to both outer layers of the frame to support axial external forces or loads, such as tensile, torsion, bending, compression, etc. To increase the shear stress, the outer layer of the plate material is molded to be assembled in accordance with the shape of the reinforcing bead portion of the intermediate layer, so that the outer layer of the plate material is formed by joining the intermediate layer to form a sandwich panel (sandwich panel) shaped structure. do.

In addition, the plurality of fine-tubes forming the middle layer of the frame, the cylindrical standard battery is stored in series to form an energy unit for driving a motor and an electric device, and the positive sine wave hollow tube on the central axis of the frame in the vertical axis direction is the It has a diameter of at least twice the thickness of the core of the mesial tube, and stores a series motor as a driving source of the vehicle inside the hollow tube. And the space between the meticulous pipes fills the auxiliary fill pipe to make an air flow path (channel), and the remaining empty spaces between the meticulous pipes and the auxiliary fill pipes are filled with cooling water or phase change material, and the auxiliary fill pipes are filled. By utilizing it as a cooling air flow pipe that emits heat to the outside atmosphere, a cooling system of heat exchange is formed together with a heat sink function of the outer layer, so that the motor part, which is a driving source stored in the positive sine wave hollow tube, and the inside of the mesial tube are accommodated. An energy source battery part, the fine tube, the auxiliary filling tube, and the frame having the outer layers of both sides as a heat sink are integrated into one chassis.

In addition, with respect to the reinforcing bead portion, the reinforcing bead portion having a cross section of the arch orthogonal to the mesial pipe, which is an intermediate layer, reinforces the intermediate layer and disperses external force into the mesial pipe, and a vehicle accessory device When mounted on the chassis, it has a function as a place for installing pins or bolts, and has four cylindrical cylinders inside the reinforcing bead and a plurality of bead nut parts in three rows in the cross-section direction, and the hollow cylinder is provided with hollow cylinders ( A hollow cylinder beam is inserted to secure a support point, and the reinforcement bead is fastened with a bolt and a nut to join the vehicle body (body) and an accessory device so that fastening devices such as pins and bolts do not penetrate the mesial tube. In order to disperse the stress concentration and local stress generated in the notch or the like to the entire surface of the frame via the outer layer on both sides and the bead for reinforcement.

With respect to the border beams at the edge of the frame, the outer layers of both sides of the frame are inserted into one inner side of both sides of the border beams, and the edges of the flanges of the border beams and the borders of the frame are joined by overlapping joints or fillet welding. On the other side of the outer edge of the rim, steering and suspension arrangement on the wheel drive shaft, fender and body support, bonnet and front bumper inside, trunk and rear bumper inside, such as rivets, bolts, welding, etc. It is joined to the body by the method, and the empty space between the upper and lower flanges and the web outside the rim beam accommodates the duct of the harness cable and the battery wiring cable, the duct of the battery and the motor cooling pipe, and has a U-shape. By adding a channel beam to isolate the empty space from the outer surface, the flange and web of the rim beam and the flange and web of the channel beam are combined to form an assembled beam of a box beam.

In addition, the battery mounted on the mesial tube is stored in the mesial tube in series in a battery socket having a lead wire of a negative (-) electrode and is stored in the mesial tube, and a battery for storing the mesial tube with a positive (+) electrode terminal at the end. Form a module. In the battery module, a battery outlet connected to a power circuit, a plus (+) terminal, and a minus (-) terminal are fastened in a concave-convex shape, and connected to a power source by a power management system and a star method. The battery part of the car frame is divided into a battery storage space on the center side and a battery storage space on the side side, based on the positive sine wave hollow tube, which is the central axis, but the battery modules on both side side depth tubes are for base power and the center side tube The module is used for the intermediate power or the peak power, but the center-side center tube module is equipped with a detachable inlet part equipped with a locking device on the rim, so that it can be easily detached. Do it.

Each of the battery modules is connected to a main distribution & switching system (MDSS), and in the main distribution switch system (MDSS), N inputs and M output lines are connected by a switch, and N×M It is composed of a power semiconductor device (PSD) having a bidirectional power switching (Matrix Switching) function of a matrix converter circuit function as a switch device. At this time, charging and discharging, circuit blocking, sensor signal (temperature, overcurrent, overvoltage, etc.) detection, battery discharge and charging ordering, regenerative braking battery module designation, etc. are separated for each module and assigned in order to charge the battery cell. Reduce the number of discharges to extend the life and shorten the charging time.

And, the series motor, which is a power source stored in the positive sine wave hollow tube, has a concave groove having a diameter of 10 mm circumscribed to the circumferential surface of the motor housing and 36 concave recesses formed by a negative sine wave recess inside the positive sine hollow tube. (凹) It is equipped with a groove to be used as a space for storing cooling pipes, coil wiring, and pads for shock insulation. At this time, 6 water-cooled cooling system piping pipes, 6 air-cooled cooling system air oil pipes, 12 motor coil guide parts, and 12 shock insulation pads are housed, but an elastic rubber shock pad for vibration and shock absorption purposes Is, √2 times (1.4142) diameter of the receiving groove diameter of 10mm, secure the elastic compression capacity, pull it into the uneven groove by pulling it, and then loosen it to fix the motor by fixing the motor , Storing the motor part without bolts or wedges causing stress concentration, and isolating the rotational vibration of the motor and the rolling vibration of the wheel to reduce the fatigue of the motor and the frame structure.

The serial motor, which is a power source stored in the positive sine wave hollow tube, drills the outer layer of the frame and the positive sine wave hollow tube, where the motor axis of rotation intersects the wheel axis in a direction orthogonal to the front wheel of the drive gear outlet. , It is provided on the rear wheel and the front and rear wheels, and combines the front wheel, rear wheel, or four-wheel drive with one serial motor, and the drive shaft of the serial motor unit is equipped with a double helical gear to remove the axial load. Powertrain). Further, in the middle of the drive gear portion and the differential gear portion of the serial motor portion, a matching gear portion composed of a double helical gear and an auxiliary shaft is placed to separate the serial motor portion and the wheel portion to separate the motor drive shaft. Raise the origin of (O), match the deceleration effect of a certain ratio and the load impedance (Z).

In addition, in order to maximize conduction and convection, which are heat transfer processes of the battery, the battery is distributedly stored in the entirety of the mesial tube to increase the heat dissipation area, and to the space between the mesial tube and the space between the mesial tube and the outer layer, the By expanding the heat conduction and convection area of the battery by filling the auxiliary fill tube, the heat dissipation area of 1.62π (5.08) times larger than the radius of the mesial tube (R) is expanded, and the outer surface of both surfaces in contact with the outside atmosphere is utilized as a heat sink do. Then, the space between the meticulous pipe and the auxiliary filling pipe are connected to an air flow pipe (tube) having an intake port and an exhaust port, and an axial flow blower for blowing gas in the axial direction of the flow pipe is added to operate with external energy when the temperature rises. Therefore, the air cooling type of the battery cooling system to heat exchange is adopted as the basic cooling method.

Furthermore, in addition to the air-cooled cooling method of the battery cooling system, a water-cooled cooling method in which water is added as a coolant to an empty space between the centrifugal tube and the auxiliary filling tube that accommodates the battery, and heat exchange between heat storage and heat dissipation In order to further improve the effect, a phase change material cooling method for injecting phase change materials such as paraffin and ionic compounds, and forcibly blowing the auxiliary fill tube with an axial flow blower, thereby exchanging the centripetal tube and the auxiliary fill tube It is a hybrid of air-cooling and phase-changing material cooling method, combining air-cooling and water-cooling type, or a combination of air-cooling and phase-changing material cooling method, based on the air-cooling method of dissipating heat to the outside atmosphere. As a cooling method, cooling efficiency can be improved.

In addition, three, four, five, four, and three laminations of the mesial tube 100 are horizontally stored without storing the serial motor, which is a vehicle driving source, inside the sine wave hollow tube on the central axis in the vertical axis direction. Then, a number of auxiliary filling pipes are focused in a hexagonal lattice shape to add 19 battery modules, and the chassis frame front wheel side bonnet and rear wheel side trunk part are used as electric vehicle power sources. An in-wheel motor can be installed as an external chassis frame. At this time, the power system of the radial motor (power train) is provided with a power system fixing part having a dashboard seat and a seat rest, a reinforcement bead on the wheel drive shaft and a rim beam as a support point, a motor part, a wheel drive shaft, Differential gear, steering and suspension, etc. are installed, and the support of the in-wheel motor installed inside the wheel is inserted into a hollow cylinder with eight cylindrical cylinders inside the bead for reinforcement of the steering and suspension of the chassis frame. To secure the support point, and fasten it with bolts to the bead nut section arranged in three rows on the upper and lower sides to support the motor, steering and suspension, and provide in-wheel motors (in-wheel) with driving power lines and cooling system inlets and outlets. a motor, a battery part that is an energy source accommodated inside the mesial tube, a frame having the mesial tube and the auxiliary filling tube, and the outer layer of both sides as a heat sink are integrated into one chassis, and the motor part that is the power source is a chassis. It can be installed externally.

In addition, the position and the concave and convex (요) type formed by the lateral sine wave hollow tube formed in the bottom pan of the flat undercarriage (Floor Pan) and the reinforcing bead portion and the rim beam in the transverse direction A receiving pad or a car pad (CarPad), which is a wireless charging current collector for a vehicle, is placed in a space, and the car pad is arranged in a hexagonal lattice shape with a circular secondary current collecting coil inside, so that the charging pad on the ground or the power supply line on the road 1 By forming an electromagnetic circuit with the primary power supply coil, it is possible to charge a battery cell by receiving electric energy as electromagnetic waves or provide a wireless power transfer circuit that drives a motor. At this time, the thickness of the car pad is equal to or less than the protruding height of the spheroidal cross section of the positive sinusoidal hollow tube and the reinforcing bead portion, and the fixing of the car pad is a plurality of bead nut portions arranged in three rows in the reinforcing bead portion. Connected with a bolt, the wiring cable of the car pad is stored in the cylindrical cylinder of the reinforcing bead, and drawn out to the outer space of the frame beam around the outside of the chassis to connect to the charging circuit and the main distribution exchange system. It can be provided with a transmission system.

In addition, in the present invention, the arrangement direction of the mesial tube forming the vehicle chassis frame is changed from a standard longitudinal direction to a horizontal direction, but bead reinforcement orthogonal to the mesial tube direction is arranged in the vertical direction, and the positive sine wave By separating the conduit into a front wheel drive shaft and a rear wheel drive shaft, the motor can be used in three combinations: front wheel drive, rear wheel drive, and front and rear wheel drive.

Then, the tube is converted into a hydrogen fuel storage tank that forms the car chassis frame, and converts the tube into a gas or liquid fossil fuel storage tank. A turbine engine vehicle equipped with a small-diameter gas turbine in a hollow pipe, an internal combustion engine vehicle equipped with an internal combustion engine engine in a bonnet portion, or the above-mentioned fine pipe is converted into a space for storing fossil fuels and batteries, and the positive sine wave hollow pipe It can be used as a hybrid vehicle (HEV) or plug-in hybrid vehicle (PHEV), which uses a combination of a serial motor and a gas turbine or an internal combustion engine.

The ultra-small fuel tank stored inside the mesial tube has a cylindrical body having an outer diameter (D) of 23 mm and a hemispherical shell convex portion of a radius (R) of 11.5 mm at both ends. As a pressure vessel, the circumferential stress (σ₁) of the cylindrical body is distributed in a geometric shape to the body of a quadruple material of a fuel tank, a meticulous tube, an auxiliary filling tube, and a double-sided outer layer, and a hemispherical shell The axial stress (σ₂) of the convex portion can be distributed to the web of the rim beam in addition to the hemispherical shell convex portion which is an ideal form to withstand the internal pressure.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

Theoretical background

Vehicle weight has a decisive effect on performance, mileage, and cost, and rolling resistance (Frr = μrrmg, μrr: rolling resistance coefficient, m: mass, g: gravitational acceleration-9.8m/sec²) It is independent of the speed of and is proportional to the weight of the car (m).

In addition, since the slope climbing force (Fhc, hill climbing force, Fhc=mgsinθ, θ: climbing angle/inclination angle) and acceleration (Fla, linnear acceleration, Fla=ma, a: acceleration) are both proportional to the weight (m), minimizing the weight of the vehicle Automotive structures, especially frame and chassis designs, must be optimized for material dynamics, taking into account conflicting requirements such as cost, strength, stiffness or performance and energy efficiency.

The present invention adopts an ultra-light core tube as a material and shape of a core in consideration of material dynamics characteristics, and utilizes it as a frame constituting an automobile chassis, saving material and reducing weight while high-strength and high-strength. While expressing the characteristics of high-rigidity, the energy source battery 120 is housed in a wide-distributed mesial tube 100 to minimize the risk of heat generation and explosion of the battery and to provide a structural shape that does not require a separate battery installation space. It is in the vision.

In order for a member or a mechanical element of a structure to economically exhibit a desired function, an internal force, which is a force resisting an external force or load acting on an object/material, and It should have strength and stiffness corresponding to the strain, and strength is related to the material's intrinsic properties and rigidity depends on the material's properties and geometry.

When the chassis or frame of a car is divided into small sections, it has the same characteristics as a beam, a horizontal member that has four supports and receives vertical loads. Its main characteristic is that its axial dimension is very large compared to that of the section. , Should be supported or combined so that rigid body displacement does not occur.

In addition, it receives mainly static load, which is the axial and vertical external forces (loads) at rest and dynamic loads when it is moving, and tension, compression, bending and shearing, Structural member with torsional and warping action. Ultimately, the rigidity, stiffness of a given material depends on the geometrical condition of the material.

First of all, the established theory of material dynamics related to beams can be resisted as the given amount of material is farther from the neutral axis and the section modulus (S) becomes larger and the section modulus (S) increases. Shear force (V) and bending moment (M), which are the stresses (stress, σ, σ=P/A, P=σA, P; the sum of stresses, A; cross-sectional area), are increased.

The formula of the physical quantity related to the main shape of the material forming the beam and the chassis that is the frame for the automobile structure is as follows.

<Shear formular related to the main beam>

<S, section modulus and relative efficiency>

Figure 1 is a cross-sectional shape of the ideal beam (ideal beam) at a given cross-sectional area (A) and height (h) given as an example of the cross-section coefficient and relative efficiency of various beam shapes utilized in the present invention 2 on the neutral axis It is a shape placed at /h, and the moment of inertia (I) I=Ah²/4 and section modulus (S) S=0.5Ah are given, but such a beam is not physically feasible.

1, the detailed cross section of the chassis 10 illustrates the cross section of the entire chassis 10, the standard WF cross section beam 106, the hollow hollow cross section cross section tube 100 and the auxiliary filling tube 101, and the open cross section channel beam 109. The chassis 10 is formed of a member to be utilized, and a geometrical shape that can specify a material and a use and improve strength and rigidity in consideration of a given section modulus (S), a moment of inertia (I), and the shape and characteristics of a beam Need to find an improvement.

Based on the above formula and the shape of the main beam, the major design element that can be derived to obtain high strength and shear stress τ when designing the chassis is the most important cross-sectional shape, and the thickness (t) of the intermediate layer is wrinkled and buckled. Shape design and design of the chassis 10 by thinning within the range where (buckling) does not occur and by placing the neutral axis of the material 107 at the farthest from the origin O to obtain a geometric shape that can obtain the maximum bending stress. Should be reflected in.

The most efficient beam mainly depends on the shape of the cross section and the shape that is farthest from the neutral axis 107 of the material is essential, and as the amount of material given is farther from the neutral axis, the section modulus (S, section modulus, S=I) /c, c: distance) increases, and as the cross-section coefficient increases, the stress resultant, which is the combined force of the shear force (V) and bending moment (M), which are stresses distributed across the cross-section, increases.

The present invention is made of a sandwich beam or panel of a three-layer structure (outer layer + middle layer + outer layer) so that the chassis 10, which is a structural frame of a vehicle, forms a beam that is close to the ideal beam, but the outer layer 103 is a high-strength steel sheet , As a plate material such as an aluminum plate, the intermediate layer 102 has a hollow circular shape in which a bending stress acting on the cross section occurs at the farthest from the neutral axis and the shear stress supporting the torsional load is near the outer boundary of the cross section. The pipe, which is a pipe, is adopted as the middle layer (core) 102.

The three-layer structure (outer layer + middle layer + outer layer) shape of the sandwich beam frame or the outer layer 103 of the chassis 10 has a much higher modulus of elasticity (E) than the material of the middle layer (core) 102. The bending stress is located on the surface that is the most distant from the neutral axis 107 of the material, and the shear force is widely distributed to the surface of the mesial tube 100, which is a thick intermediate layer (core) 102, so a sandwich beam having high rigidity and high strength beam) function is expressed.

The middle layer 102 and the double-sided outer layer 103 of the mesial tube 100 having the double-symmetrical cross-section are formed of an outer layer + an intermediate layer + an outer layer of two linear elastic materials. Since it is smaller than the height (Hcore), the outer layer 103 supports the entire bending stress in the longitudinal direction, and the intermediate layer 102 approaches the ideal beam supporting most of the shear stress.

Sandwich beams approaching the ideal beam save material and reduce weight with a composite beam in which one or more materials are joined, while maintaining high-strength and material properties and geometric shapes associated with the material's unique properties. Because of its high-rigidity characteristics, it is widely used in daily products such as skiing, doors, wall panels, and cardboard boxes in the aerospace and aerospace industries and in everyday life.

The sandwich beam is not rusted and is separated by two thin outer layers (103) made of relatively high-strength material and thick core (102) made of lightweight and low-strength material. Plastics and foams are commonly used in the intermediate layer 102.

In view of the material mechanical properties described above, the present invention adopts the ultra-light-weight core tube 100 as the material and shape of the core 102 to save material and reduce weight while exhibiting high strength and high rigidity properties. On the other hand, by storing the battery 120 as an energy source in the widely distributed mesial tube 100, it minimizes the risk of heat generation and explosion of the battery and realizes a structural shape that does not require a separate battery 120 installation space.

At this time, by inserting the auxiliary filling pipe 101 into the empty space between the mesial tube 100 and the space between the mesial tube 100 and the double-sided outer layer 103, flat dispersion of shear stress τ, torsion and bending strength enhancement, wrinkles ) And the buckling, which is an axial displacement, minimizes the space to express high rigidity, while the space between the fine pipe 100 and the auxiliary filling pipe 101 is an air flow path of the battery cooling system 14 It is used as a cooling air oil pipe (140).

The calculation of the shape dimension of the auxiliary filling pipe 101 is made of three circles (a,b,c,: radius of inscribed circle) of osculating circles (or "kissing" circles) or Soddy circles (radius x). When the solution of the Descartes' equation for calculating the size is obtained, the radius x of the auxiliary filling pipe 101 can be obtained, and detailed numerical values are described in the Examples.

The mesial tube 100 and the auxiliary filling tube 101, which are the intermediate layer 102 formed of the bundle-shaped tube, serve as a support area for stabilizing the outer surface 103 with wrinkles or buckling with a filler. Geometrically, the cross section coefficient (S) of the mesial tube 100 and the auxiliary filling tube 102 is larger than the WF beam (0.35 Ah) by physically increasing π times the height (h) of the standard WF beam. As a result, it has 0.4614 Ah, which is close to 0.5 Ah, which is the cross-section coefficient (S) of the ideal beam.

As an example of a specific numerical value, the section coefficient S of the standard WF beam is about 0.35 and the section coefficient S of the ideal beam is given as 0.5, so that the ratio becomes 0.7 (0.35/0.5), and the present invention The mesial tube, the core of, increases geometrically by π times the web of a standard WF beam. Finding the increased cross section coefficient (Sx) of the mesial tube is 0.1114 [π*Sx/0.5=0.7, Sx=(0.5*0.7)/π = 0.1114], so the cross section coefficient of the flatform chassis ( Sx) has a value between at least 0.35 (when t is thick) and up to 0.4614 (0.35+0.1114) depending on the geometrical shape (center tube thickness, joining method, etc.), so it is 0 to 31.8 [%] compared to the standard WF beam. You will have an improved section modulus.

The frame for the trinity vehicle structure is referred to as a “flatform chassis” (10). If the battery 120, a large-capacity energy source, is stored in the centripetal tube 100, it is unnecessary to secure a separate installation space. Lower the material and weight center of the chassis 10 below the origin (O) of the wheel drive shaft 108 to secure stability while increasing the inertia moment (I) versus volume and shear stress such as tension, torsion, bending, compression, etc. The savings and freedom of vehicle design can be secured.

Example 1, “Standard” flat-shape chassis shape

The first aspect of the present invention relates to a standard cross-sectional shape of a chassis that is a frame for a vehicle structure. FIG. 2 is an enlarged cross-sectional view of a three-ply structured chassis, FIG. 3 is a plan view of an integrated or trinity flat chassis, and FIG. 4 is a side view of the flat chassis And cross-sectional shape, FIG. 5 is a sectional view (A line) of a flat chassis and a vertical rim beam, FIG. 6 is a sectional view (B line) of a horizontal rim beam, and FIG. 7 is a sectional view of a bead portion for reinforcing a flat chassis, FIG. Illustrates a cross-sectional view of the flat undercarriage motor section.

In the following terms, the flat chassis 10 collectively refers to the integrated chassis 10 in which the battery part 12, the motor part 13, and the structural frame of the vehicle are integrated, and the frame is a centripetal tube 100 in which the battery is stored. In the absence of a core 102 of the auxiliary filling pipe 101, a positive sine wave hollow pipe 106 in which the motor portion is stored, a reinforcement bead portion 105, a double-sided outer layer 103, and a frame beam 106 It means the basic skeleton or frame for the trinity structure to be formed.

That is, the flat chassis refers to an integrated chassis (car chassis) in which power train batteries and motors are stored and stored, and the frame is a substructure of the chassis and is a simple basic skeleton (frame) without a power train. Refers to a structure formed of an auxiliary filling pipe, a positive sine wave hollow pipe, a reinforcing bead portion, a double-sided outer layer, and a member of a border beam.

The vehicle structure such as the chassis 10 withstands the bending stress, which is the combined force of the compressive force of the upper part of the vehicle and the tensile force of the lower part of the vehicle, as well as factors such as the shape of the vehicle structure, materials used, supported loads, environmental conditions and cost, etc. In order to minimize weight and save material, it is desirable to have a minimum cross-sectional area, so the geometry of the cross-section is most important in designing the chassis.

Typically, the chassis (chassis) is the rest of the body (body), and includes the main accessories including the power train, steering system, suspension, and drive shaft, and the frame designed to support them. Strength and rigidity that can sufficiently withstand bending, torsion, and vibration caused by it are required, and to improve fuel efficiency, it is lightweight, the material cost is low, and the production productivity must be high.

The vehicle chassis 10 is a material mechanically functioning as a beam, so that the beam cannot break the pressure, resulting in a shear force, bending moment, bending moment, stress, strain, and deflection ( Deflection) is idealized modeling to obtain the optimal frame shape (solar) and manufacturing methods to provide the means to be used in the actual industry.

The shape of the basic frame of the present invention focuses on the hollow mesial tube 100 in three or more multi-step hexagonal lattices on a horizontal plane, and further reinforces the space between the mesial tubes 100 with an auxiliary filling tube 101 It forms a bundle of thick interlayers (core) 102, the material mechanical cross-section coefficient (S) is approximately 0.4614Ah, higher than 0.35Ah of the standard WF beam and high strength close to 0.5Ah of the ideal beam A sandwich beam expressing high-stiffness characteristics can be exhibited.

The hollow mesial tube 100 forming the thick intermediate layer 102 is lightweight and relatively low-strength aluminum with a thickness of 1 t (t=1 mm) or less, stainless steel as a rust-resistant steel, plastic or carbon fiber, etc. It is possible to use tubes that are made of materials and are widely used in industrial sites.

The intermediate layer 102 is formed by using a method such as a bonding agent, soldering, welding, or the like when the three-stage or multi-stage focusing of the mesial tube 100 in a hexagonal lattice pattern is used to form the intermediate layer 102. By manufacturing and making it the intermediate layer 102 of the chassis 10, which is a frame for automobile structures, the same characteristics as the filler of the sandwich beam are expressed, thereby stabilizing the outer layer 102 on both sides from wrinkles or buckling.

A further improved mass production method is a basic frame manufacturing process of a double symmetrical cross section (y, z axis) including a positive sine wave hollow tube 104 for storing the serial motor part 130 of Example 3 to form molten aluminum into a mold ( The die-casting, extrusion, or injection molding with engineering plastics, which are pressure-injected into dies, is a manufacturing method that can mass-produce an intermediate layer of a whole shape, an intermediate layer 102 It is more preferable in terms of productivity because it improves the geometrical shape of the chassis, thereby increasing the rigidity of the chassis and eliminating the joining process.

On the other hand, the surface of the chassis 10 is a high-strength material, and a stainless steel sheet that is not rusted is 2 mm or more, and an aluminum alloy plate or an engineering plastic plate is formed of a double-sided outer layer 103 with a plate material of 4 mm or more, and the material is furthest from the neutral axis. Since it is located at a distance, the bending stress is maximized, and the shear force flows to the surface of the multi-focused centripetal tube 100, which is a thick intermediate layer (core) 102, so that the function of a sandwich beam is expressed.

In the above structure, the double-sided outer layer 103 is located at the farthest distance from the neutral axis 107 of the material and has the function of the outer beam of an ideal beam where the bending stress is maximized and the hollow ( The hollow mesial tube 100 acts as a filler, which is an intermediate layer 102, in the shape of a sandwich beam that serves as a support layer that suppresses wrinkles or buckling of the face 103. The frame or platform is configured to accommodate a number of standard cylindrical batteries 120.

In addition, a positive sinusoidal hollow cylinder 104, which is a hollow corrugated cylinder, is placed on the longitudinal central center axis of the chassis 10 to power the motor. By storing the part 13 inside the frame, the battery part 12 as an energy source, the motor part 13 as a power source, and the chassis part 10 as a structural frame of a vehicle are integrated into a single unitary integrated flat chassis 10. Provides

The sine wave hollow tube 104 is a full wave in which a graph is repeated when the value of x is changed from 0 to π in the graph of the sinusoidal, which is a trigonometric waveform, that is, y=sin(x). By adopting a corrugated pipe with a rectifier shape, material mechanically further improves torsion or bending strength, prevents wrinkles and buckling with a cross section that extends π times more than a flat tube compared to the same volume, improves tensile and torsion, The bending and compressive strength can be improved, and the details are detailed in Example 3.

At this time, a positive (+)-shaped bead is padded with a reinforcing bead portion 105 in the transverse direction orthogonal to the vertical direction, which is the arrangement direction of the positive sine wave hollow tube 104 and the intermediate layer 102, the mesial tube 100. When forming a portion, the compression of the upper portion of the chassis 10 and the tensile strength of the lower portion are increased to increase the flexural rigidity that resists bending stress in the transverse direction (z-axis), thereby acting on the vehicle. The rigidity of the chassis 10 supporting external loads and loads can be further reinforced, and the positions thereof are disposed on the front wheel drive shaft 108, the rear wheel drive shaft 108, the front and rear seat rest portions 117, and the like. .

The reinforcing bead portion 105 has four cylindrical cylinders in the longitudinal direction inside a member having a circular segment cross-section, which is a figure consisting of a line connecting two points on a circle and an arc connecting the two points. Provides a structure of three rows of four holes in three rows of three rows of bead nut sections and three or more bead nut sections. The hollow cylinder beam is inserted into the cylindrical cylinder 105a at the place to secure a support point, and the bead nut section 105b arranged in six rows of upper and lower parts is fastened with a plurality of bolts to be joined.

In the six-row bead nut section 105b fastening and a double three-row four-hole fastening method for securing a support point in eight cylindrical cylinders 105a, a fastening device such as a pin or a bolt penetrates through the fine pipe 100 Improvement to disperse the stress concentration and local stress generated from holes or notches, etc., to the entire surface of the chassis portion 10 via the double-sided outer layer 103 and the reinforcement bead portion 105 in the shape of an arch. It is preferred to place the wheel drive shaft 108, the front wheel 113, the rear wheel 114, the steering and suspension device 115, the dashboard rest portion 116, etc. in which the load and the bending stress are concentrated in the prescribed manner.

The reinforcing bead portion 105 reinforces the intermediate layer 102 of the longitudinal mesial tube 100 in the transverse direction, thereby enhancing the load and bending stress on both sides of the outer layer 103, the reinforcing bead portion 105, and the mesial pipe 100 Chassis part, which is a frame for automobile structures that expresses the characteristics of sandwich beams of the outer layer + middle layer + outer layer when the entire intermediate layer 102 is joined on both sides by flexibly processing the plate material, which is the outer layer 103, to support it. (10) is formed.

The double-sided outer layer 103, the plate material, corresponds to the shape of the positive wave hollow tube 106 and the reinforcing bead portion 105 to further increase the rigidity of a material or plate structure that can maintain high rigidity while maintaining light weight. To increase the strength of the structure by increasing the tensile or compressive stress, bending stress, and shear stress by putting a bead, the higher strength (combined with the intermediate layer (core) 102 formed by a number of fine-tubes 100 of the present invention ( It forms a high-strength and high-rigidity sandwich beam.

In addition, the edges of the front, rear, left, and right sides of the chassis portion 10 have a flange that resists bending stress and a web that resists shear stress in a wide flange beam (WF) shape with a cross-section coefficient (S) of 0.35 Ah ), but the vertical double-sided outer layer 103 of the left and right sides of the frame is inserted into one side of the vertical border beam 106A, and the flange of the edge beam 106 and the outer layer of both sides of the frame ( The interface of 103) is joined by welding 158, but the edges of the chassis 10 are reinforced by finishing with fillet welding, plug welding, lap weld joint, and the like.

The other side of the vertical frame beam 106A into which the frame is not inserted is a rivet without residual deformation of the wheel drive shaft 108, the steering and suspension mounting portion 115, the fender portion and the body support portion 11, etc. ) Or bolts (157), welding (158), such as by joining the vehicle body (body), but using a bead for the reinforcement bead (105) with three rows of bead nut (105b) and four cylinder cylinder (105a) By inserting the hollow cone into the cylinder cylinder 105a at the upper and lower parts of the upper part to secure a support point, and double bolts are joined by joining a plurality of bolts to the bead nut part 105b arranged in the upper and lower rows of 6 rows. It is desirable to widely distribute loads and bending stresses by joining the attachment and the body (body) by fastening and joining.

The outer empty space 106x between the flange of the vertical frame beam 106A and the web has a shape circumferentially forming the chassis portion 10, so that various electric devices 126 of the vehicle body (body) and charging sockets, etc. It is used as a necessary wiring or piping space, and has a U-shaped open cross section beam or profile sectionns. When the channel beam 109 is reinforced to finish, the vertical left and right side portions of the chassis 10, which is a structural frame of the electric vehicle, can be completed.

On the other hand, the horizontal edge beam 106B before and after the frame at which the centripetal tube 100 is terminated includes a bonnet and a front bumper inner portion 118, a trunk and rear bumper inner portion 118, a battery portion 12 and a module outlet 124. ), a space constituting the wiring and piping network of the cooling air pipe 140, the air intake 141 and the air exhaust 142 of the cooling system 14, by extending the flange portion of one side of the rim beam 106 The support is secured by joining the outer side layer 103 of the frame, and the inner space 106z between the flange of the horizontal rim beam 106B and the web is provided with an air intake 141 or an air exhaust 142 of the cooling air pipe 140. Branch, and focus the +/- terminals output from the battery socket 122, the battery module 121, and the battery outlet 123 to connect to the main power distribution exchange system 125 or the electric device 126, and connect the power circuit. By configuring, so that wiring or piping does not protrude outside the chassis.

The outer space 106y of the horizontal rim beam 106B has a shape circumferentially outside the chassis 10 together with the outer space 106x of the vertical rim beam 106A, so that it is a charging socket, a lighting device, a lighting device, and a gauge. , Used as a space to place wiring (harness cables) or piping (ducts) driving electric devices such as horns, sensors, wipers, and air-conditioning devices. After placing the cables and pipes in the outer space (106x) between the flange and the web When the U-shaped channel beam 109 is added, a build-up beam in which two or more materials are combined is formed.

In the assembly beam, the flange and web of the rim beam 106 and the flange and web of the channel beam 109 are joined by bolts 157, welding 158, or rivets to form a box beam, so that the shear flow It is more preferable to disperse the rim beams 106 and channel beams 109 into all cross-sections to resist bending stress and shear stress and to prevent cables and pipes from being exposed to the external environment.

Reinforcement of the members of the rim beam 106 and the channel beam 109 of the WF beam shape and the reinforcing bead section 105 orthogonal to the transverse direction is transmitted through pins or bolts when the vehicle attachment is mounted to the chassis. Fatigue failure or progressive failure by dispersing the local stress of the stress concentration generated in the notch (notch, keyway, stepped portion, etc.) and hole to the entire surface of the chassis 10 It is a useful means to prevent fractures and provide a joint point to secure the chassis (body).

The behavior of a vehicle structure depends on the properties of the material and the properties of the load, and it acts gradually for a long time and slowly changes, and a load that is suddenly applied or removed and an impact load that is applied or removed for a long period of time. There is a dynamic load of a repeated load, which is a load that changes in strength and acts repeatedly for several cycles.

An impact load is a load generated when a vehicle hits a stationary structure or impacts between vehicles. During impact, energy generates heat, causes local plastic deformation, and holes and grooves that cause stress concentration. Structures of the same shape are very vulnerable to impact, and when subjected to constant loads and constant cyclic loads, the material itself may rupture with minor impacts even if it is ductile.

Referring to Figures 2, 5, 6, 7, 8, when calculating the shape dimensions of the flattened chassis 10 based on the 21700 standard cylindrical battery cell 120, the meticulous tube 100 in which the battery is stored has an outer diameter of 25mm (R= 12.5mm), inner diameter-23mm, thickness-1mm, the height of the middle layer 102 of the mesial tube 100, which is integrated into three layers, is the height of two hexagonal grids (R*1-[(√3-1)]) The 6.6987mm (3.3493mm*2) phosphorus is the height of the middle layer (hcore) minus 68.3012mm (75mm-6.6987mm) minus 75mm (25mm*3) of the three-tiered mesial tube, and the requirements of the chassis, the frame for automobile structures Depending on the level, it can be focused in 4 or 5 or more stages, but this example is based on a 3-stage stacking.

의 데카르트 방정식의 해x를 구하면, 세심관(100)과 세심관 사이의 보조 채움관(101)은 외경 3.86mm, 세심관과 바깥층(직선: 곡률 0) 사이의 보조 채움관은 외경 6.25mm, 세심관(100)과 테두리 비드부(106)의 웨브에 연접하는 보조 채움관(101)은 외경 12.5mm를 표준 형상치수로 삼는다.Meanwhile, in the case of the auxiliary filling pipe 101

When the solution of the Cartesian equation of x is obtained, the auxiliary fill tube 101 between the mesial tube 100 and the mesial tube is 3.86 mm in outer diameter, and the auxiliary fill tube between the mesial tube and the outer layer (straight line: curvature 0) is 6.25 mm in outer diameter. The auxiliary filling pipe 101 that connects to the web of the centripetal pipe 100 and the rim bead portion 106 has an outer diameter of 12.5 mm as a standard shape dimension.

The positive sine wave hollow tube 104 storing the power source motor part 13 has an outer radius radius (60 mm) and impact of the serial motor 130 with a dimension equal to or greater than twice the height of the middle layer (core) 102 and 68.3012 mm (hcore). The hollow spacer serial motor 130 is placed by placing the positive sine wave hollow tube 106, which is a hollow corrugated pipe having 36 wrinkles, with an outer diameter of 72mm, adding the insertion space (10mm) of the insulating pad 139 and the thickness (2mm) of the corrugated pipe 130 ).

The shape dimension of the reinforcing bead portion 105, which is a member having a circular segment cross-section, is 37.8494 mm, which is the distance between the outer diameter radius of the hollow tube (72 mm) and the intermediate layer 102 relative to the central axis 107 of the material. If you have a protrusion height of (72mm-34.1506mm) and substitute into the formula to find a circular segment, chord length (a=2√R²-r²)-126.77mm, arc length (S= Rθ)-155.03mm, angle-123.37 ° has a dimension and reinforces the chassis portion 10 in a direction orthogonal to the intermediate layer (core) (102).

And the plate material of the double-sided outer layer 103, which is the surface of the intermediate layer 102, has a value of 2 mm or more when the material is stainless, and an aluminum alloy plate or engineering plastic plate having a value of 4 mm or more. The base chassis panel is formed by forming or pressing a bent shape corresponding to the shape of the reinforcing bead portion 105 and joining the thick intermediate layer 102 by welding or the like.

The WF beam-shaped rim beam 106 located at the edge of the flat undercarriage 10 has a flange that resists bending stress and a web web that resists shear stress to be 5 mm or more but 5 mm when the material is stainless steel. Above, 10mm or more for aluminum, the width of the flange should be 100mm or more, but 100mm or more for stainless steel, 150mm or more for aluminum, and the height of the web is 72.3012mm or more for stainless, 76.3012mm or more for aluminum It is desirable to have dimensions.

Summarizing the preferred embodiment of the flat undercarriage 10, the hollow core 1 core of the multi-center tube (102) [H: 68.3012mm] and the auxiliary filling pipe 101, a positive sine wave hollow pipe 104 storing a series motor 130 as a power source on the vertical central axis (D: 144mm), orthogonal to the hollow pipe and fine pipe 100 +) forming a sandwich panel in which the plate material of the double-sided outer layer 103 becomes a surface of the bead portion 105 for lateral reinforcement.

Then, the edge portion of the panel is finished with a WF beam-shaped rim beam 106 to complete the standard chassis portion 10. At this time, the height (thickness) of the sandwich panel portion is 72.3012 mm or more, and the height of the motor portion and the reinforcement bead portion (Thickness) is more than 148mm (144mm+2mm+2mm), and the height of the arch part protruding from the panel becomes 37.8494mm, providing a joint point that resists the upper and lower compressive stress of the chassis and fixes the body (body). do.

Example 2. Battery module mounting method and main distribution switch system (MDSS)

Example 2 is an example of the assembly and mounting method of the battery module 121, which is an energy source mounted on the centrifugal tube 100 of the basic type sandwich beam of Example 1, and distribution and the like of the battery part of FIG. 9, FIG. 10 The shape of the socket and the outlet of the battery part of FIG. is listed with reference to the block diagram of the main power distribution exchange system (MDSS) of FIG.

The present invention is a battery of a type in which the 21700 standard cylindrical battery cell (21mm*70mm) 120 having high cost competitiveness and high capacity characteristics in mass production is serially stored in the mesial tube 100 which is the intermediate layer 102 of the chassis 10 The module 121 is constituted, and at this time, the battery socket 122 is provided to mount the individual battery cells 120 to the battery socket 122 and adopt a safe storage method for storing the socket in the centripetal tube 100.

Secondary batteries, which exceed about 40% of the cost of electric vehicles, determine the main performance such as mileage and output, monitor the battery status, manage the charging and discharging function, balancing function, and function to judge and protect the occurrence of abnormal conditions to protect the battery The system (BMS, Battery Management System) 129 is a technology that improves efficiency and secures functional stability through optimization of battery status, and is very important in the field of electric vehicles and power storage (ESS).

In addition, in order to improve the performance and safety of the vehicle system, the vehicle system is more compactly configured, and redundancy in unit battery cells and module units in order to alleviate the limit of use such as voltage, current, temperature, etc. It is necessary to secure longevity and safety.

The mounting method of the battery module 121 specified by the present invention takes into account charging, replacement, or additional installation, and the side-side battery storage space 112 is utilized as a base power module, which is a basic storage space. In addition, the center side battery storage space 111 is used as a module for intermediate power or peak power, which can be detached from time to time.

The diameter of the mesial tube 100 for storing the battery cell 120 is an outer diameter of 25mm (inner diameter 23mm), an aluminum, stainless steel or plastic tube having a thickness of 1mm, and the battery socket 122 has an outer diameter of 22.5mm (inner diameter 21.5mm), A method of forming the socket lead wire 159 by forming a socket lead wire 159 in the form of a minus (-) terminal strip on the inner diameter surface of a non-combustible plastic material having a thickness of 1 mm or by applying a copper thin film between two thin tubes is preferred. , Configures a battery module 121 circuit connected to the main distribution exchange system 125 through the battery outlet 123.

The configuration of the battery module 121 is different from the axial length of the chassis, as shown in FIG. 3, so that the center side battery storage space 111 and the side battery storage space 112 are separated to form a battery module, and the battery module 121 The method of storing the sash 10 in the mesial tube 100, which is the middle layer of the chassis 10, is a front and rear horizontal frame beam without disassembling or dismantling the chassis (car chassis) or the body (car chassis) for charging and discharging of batteries for replacement and inspection. Only the (106B) and the channel beam 109 are disassembled to have a progression that can be easily performed.

In particular, the battery module 121 of the center side battery storage space 111, which is used as a module for peak power, can be detached more easily, and the front and rear edge bead portions 106B and the channel beam ( 109) Equipped with a detachable inlet part equipped with a locking device as an option to enhance the convenience of adding and replacing batteries and providing post-service after leaving the vehicle. Let's introduce a business model.

At this time, the battery module 121 detachable lead-in portion of the front and rear edge bead portion 106B, the web module 156 of the same size as the diameter of the battery module 121, the module outlet 124 and the module stopper 128 of the web If it is made of a nut and bolt type with the same thickness, and has a screw-type fastening structure, the battery module 121 is stored, and then the stopper portion 128 is filled in the web with the module outlet 124 of the web. Improves the concentration of stress.

The battery module 121 is a positive (+) terminal and a negative (-) terminal of the battery socket 122 and the battery outlet 123 are fastened in a concave-convex shape to form a power management system 125 and a star. It is connected to the power in a manner, and the individual outlets 123 are connected to the main distribution & switching system (MDSS) 125 of the power supply unit to manage the battery management system (BMS) 129 and the central processing unit (CPU). It is desirable to control charging and discharging, circuit blocking, and sensing of sensor signals (temperature, overcurrent, overvoltage, etc.) for each module.

When the battery module 121 of the present invention is calculated based on a standard medium-sized passenger car and a 21700 standard cylindrical battery (21mm*70mm, 3.7V, 4.5 Ah), the battery module 121 of the center-side battery storage space 111 is 102 The output voltage is 155.4V (42*3.7V) with serial connection of 42 cells (300Cm/7=42 cells) for each module with 34 modules*3 layers, 102*42 cells = 4,284 cells. The battery module 121 of the side-side battery storage space 112 is 72 modules (12 modules*3 layers* 1 each on the left and right, 72*26=1,872 cells), and 26 cells per module (182Cm/7=26 cells) ), the output voltage is 96.2 V (26 cells * 3.7V), and the power supply is composed of a total of 174 (102+72) modules and 6,156 (center-4,284 + peripheral-1,872) unit cells. Since it has a maximum capacity of 102.497 kWh (6,156 units*3.7V*4.5Ah), it has a driving distance of 512km when driving 5km per kWh, and 820km when driving 8km.

The main distribution switch system (MDSS) 125 has N input and M output lines connected to a switch to perform a bi-directional power switching (Matrix Switching) function of matrix converter circuits, which are N×M switch elements. It is desirable to consist of Power Semiconductor Devices (PSD), and to increase the switching speed and to simplify the high output and control circuit by driving high voltage and high current.

The main power distribution exchange system (MDSS) 125 opens and closes a switch element with control commands of the vehicle's battery management system (BMS) and central processing unit (CPU) to configure charging and discharging of individual battery modules, and parallel and parallel circuits. It is a key element that composes the motor driving power, regenerative braking function, and power supply circuits of various electric devices. In parallel, two (A/B) dual duplex systems are operated for safe operation of the vehicle. It is more preferable to operate with a tandem-type fault tolerant system.

The actual industrial application of the main power distribution exchange system (MDSS) 125 includes a battery module 121, a charging circuit unit 127, a motor unit 13, an inverter and a converter, a smart car infotainment, steering device, and braking device. , Power supply and interconnection of all electric devices 126 such as accelerators, lighting devices, dashboards, autonomous driving systems, battery management systems (BMS), and vehicle central processing units (CPUs), and It functions as a distribution box that provides switching connection and maintenance access point of the power circuit, and controls individual battery modules 121 through data communication with control systems such as CPU and BMS.

In consideration of the long life of the autonomous and charging and discharging at any time during the life cycle of the battery, the mounting of each module of the battery is physically separated and operated by modules (for example, the order of discharge for each module, the designation of the battery module for regenerative braking) The well-designed main power distribution exchange system (MDSS) 125 is an important element technology that can extend the life of expensive batteries by reducing the number of charges and discharges of the battery cells 120. It can be used as a tool to reduce the cost of ownership (TCO).

For example, if the driving of the motor 13 and the power supply of the electric device 126 are sequentially serially allocated to a discharge circuit such as a motor and an electric circuit for each module, the number of battery discharges is greatly reduced and over-discharge and over-charge are controlled for each battery module 121. Since it can be protected, the life cycle of the battery cell 120 can be significantly extended compared to the parallel allocation method.

In addition, only the modules that are discharged during charging are connected to the charging circuit unit 127 to greatly reduce the number of repetitive charges, thereby prolonging the life of the battery cells 120 of individual modules, thereby prolonging operating expenditure (OPEX) costs and car ownership. While reducing the total cost of ownership (TCO) of the period, the time required for rapid and slow charging can be shortened to improve driver discomfort and convenience.

Currently, the average mileage of 82% drivers per day is 64 km, and 51% is within 30 km. Considering the capacity of the battery and the speed of technological development, it can be predicted that the diffusion of BEV or PHEV will be accelerated if only the charging infrastructure is equipped. The module 121 and the mounting method may combine the expensive battery cell 120 into ultra-short, short-distance, medium-distance, long-distance, and ultra-long distances according to the driver's demand.

In addition, the distribution channel separating the car from the battery (battery) dramatically lowers the initial purchase price of the car, reducing the cost burden by purchasing or renting additional batteries if necessary, or at service stores such as battery charging stations, parking lots, and convenience stores. The battery module mounting method, which can be detached by renting or replacing a charged battery, can employ various business models such as dramatically shortening the charging standby time.

Example 3. "Motor power source" (serial) motor part mounting method

Embodiment 3 relates to a motor part 13 stored on the central axis of the “flatform chassis” of Example 1 10. FIG. 8 is a sectional view of the motor part, and FIG. 12 is a series. The motor part mounting shape diagram, FIG. 13 illustrates the shape of the matching gear portion and the differential gear portion.

The motor that can make the most of the advantages of the present invention is not a conventional radial type motor, but a hollow shaft in a long axis shape with a relatively small diameter that alters between the rotor and the stator along the central axis. The motor 130 is preferable, and a specific example thereof is "patent application number 10-2017-0104227, a positive sine wave hollow shaft-type series electromagnetic rotating body".

The patented invention is a method that can solve the problems of the conventional electromagnetic rotor technology, the rotor (Ro) and the stator (St) alternately perpendicular to the hollow shaft (中空軸, hollow shaft) or air core shaft (交互) A series electromagnetic rotating body is provided.

In particular, by adopting a hollow shaft as a rotating shaft, a progressive shaft having a shape of a virtual shaft in which a physical shaft is removed and an open cooling system through a hollow shaft are provided, and the inertia moment (I) of the rotating body is increased. This is to improve the mechanical torque of the motor (induction machine) and the electrical energy output of the generator (synchronous machine) while increasing the economical efficiency by removing the high cost and heavy rotating shaft.

Hollow shaft rotating body has an inertia moment (I) in the unit area (A) and mass (M) of 11.11-25% increase compared to a solid solid shaft, and a magnetic closed circuit This bidirectional coiled structure has 22.22 to 50% increase in output efficiency, and the embodiments are listed on the basis of the hollow shaft serial motor 130 with a 6-pole outer diameter of 60 mm.

In order to utilize the hollow shaft in series motor 130 as a power source, the storage space of the motor part 13 uses the positive sine wave hollow tube 104 described in the "standard type" flat chassis shape of Example 1 When placed on the central axis of the chassis 10, the cross-sectional area extending π times larger than the flat tube of the same volume and the parabolic folds in the circumferential direction of the tube have a shape that continuously repeats to allow the maximum allowable bending stress (σ _x , bending stress), the function of a fully stressed beam is expressed to prevent wrinkles and buckling, and to improve tensile, torsion, bending, and compressive strength.

The effective design dimension of the positive sinusoidal hollow tube 104 can be easily set to the size of the wrinkles in radians by simply determining the radius and number of wrinkles of the tube, and the application example of the present invention is the minimum value of the perfect number, which is a positive integer. It is calculated based on the integer multiple of '6' (6*N), but the number of wrinkles is based on a 6-pole motor, taking an N value of 6, and the positive sine wave hollow tube 104 having 36 teeth is motor part. (13) is used as a storage space.

The 36 teeth formed in the hollow tube are sine wave yaw grooves, 12 shock-insulating pads (139), 12 motor coil guides, 6 water-cooled cooling systems (148), 6 pipes, and air-cooled cooling. Utilizing the space for accommodating the six air vents 142 of the system 147, the motor part 13 is fastened, and the wiring of the coil of the motor part and the piping for the cooling system are both sinusoidal grooves inside the hollow tube. Remove the separate fasteners and wiring and piping parts.

If the diameter of the inner groove is 10 mm, the midline radius value of the origin of the inner groove is 65 mm, the radius of 65 mm, and the length of one square that circumscribes the circumferential surface becomes 11.3446 mm (2π*65 mm/36), and the diameter of the inner groove ( D-10mm), the difference between 1.3446mm and the width of the jaw, which is the gap between the corrugations, is formed on the outer circumferential surface of the motor part 13 to form an uneven groove with 36 teeth to form a fastening part and wiring. Piping space can be secured.

When 36 teeth are formed in the circumferential length (2πR) direction to form impact-insulating pads, motor coil guides, water-cooled pipes, and air-cooled air exhausts, the height of the teeth (grooves) is 5 mm. It is more preferable to make the motor insertion process and the vibration allowable space of the chassis including the motor and the wheel by securing a 2 mm gap between the motor part and the hollow pipe teeth by removing the 1 mm from the 4 mm height.

When the series motor 130 is stored in the positive sinusoidal hollow tube 104, it is a viscoelastic material that absorbs vibration and shock with excellent damping action. It is a vibration or shock in the shape of a cylindrical rubber band made of synthetic rubber or natural rubber. It is equipped with an insulation pad (isollator) 139, and is inserted into the space between the motor 13, the yaw groove 138 and the positive sine wave hollow tube 104 inside the negative sine wave yaw groove, and the motor portion ( 13) to be stored, but the number of pads secures a total of 12 shock absorbers and supports, one for each of the left and right pipes of the motor unit 13, the water cooling type cooling system 148, and the like.

At this time, the thickness of the shock-insulating pad 139 is a method to secure the elastic compression capacity, provided with a cylindrical pad having a diameter of √2 times (1.4142) diameter of 10mm (1Cm) in diameter, so that the motor part 13 is required. (凹) Insert the motor part 13 into the positive sine wave hollow tube 104 by inserting it into the groove 138 and the negative sine wave groove of the positive sine wave hollow tube 104, and fix it to the chassis 10 to absorb vibration and shock. And attenuated.

The method of fixing the pad is a method of fixing the one end of the pad and pulling it in the longitudinal direction to reduce the thickness of the pad. It is a method of restoring elasticity by inserting it into the yaw groove and then relaxing it. When the position of the part 13 is fixed, the motor part 13 can be easily fixed without parts such as bolts or wedges causing stress concentration and shear, and the rotational vibration of the motor and the rolling vibration of the wheel are mutually insulated ( isolation) to reduce the fatigue of the motor and chassis structures due to vibration.

In addition, in order to form a power train of a vehicle, when connecting a rotating shaft of a motor orthogonal to the wheel shaft, deceleration of the high rotational speed of the motor and transmission of high-efficiency driving force and vibration, torsion, bending of the wheel and the motor driving shaft are performed. Appropriate gear parts and bearing parts should be provided.

The present invention uses a differential gear unit 136, which is proven to be reliable and capable of mass production, as a power transmission device that connects the drive shaft 137 and the wheel drive shaft 108 of the motor unit, and improves the efficiency of power transmission. Matching gear (132) consisting of a double helical gear (133) and an auxiliary rotation shaft (Aux. shaft) 134 for the purpose of isolating and alleviating vibration and external force of the wheel drive shaft 108 ).

The matching gear part 132 transmits power to a drive pinion (D) 135 that transmits power to a ring gear (G) of the differential gear part 136, and the twist angle directions are opposite to each other. Composed of a pair of phosphorous helical gears, which consists of a double helical gear (133) that removes axial loads and external forces, and an auxiliary shaft (Aux. shaft) 134, which is a gear shaft. , 114) by separating the origin O of the motor drive shaft 137, the deceleration effect of a certain ratio, and matching the load impedance (Z) to increase the efficiency of driving the gear, reduce noise and vibration Improve the quietness of.

The differential gear part 136 interlocked with the matching gear part 132 is a power distribution device that varies the number of revolutions of the left and right wheels when the vehicle is turning or when road conditions are poor. The details of the present invention are omitted, and according to the present invention, the drive gear outlet 131 is positioned at a position where the serial motor 130 and the wheel drive shaft 108 are orthogonal to the front wheel side, the rear wheel side, or the front and rear wheel sides. Equipped and placed one or two mating gear portion 132 and differential gear portion 136, it has the expandability and simplicity to combine front-wheel drive, rear-wheel drive, and four-wheel drive with one motor.

Other important elements that make up the chassis and body are the accessories (eg, wheels 113, 114), suspension, steering, bumpers, doors, fenders, seats, lights and lights mounted on the chassis 10, which is a frame for automobile structures. Other embodiments of manufacturing or assembly methods that are actually available in the industry are required, but this is beyond the scope of the present invention and bolts to the reinforcement bead portion 105 of the flat chassis 10 and the frame beam 106 of the WF beam shape. , Since it can be easily installed by riveting or welding, it is omitted.

Example 4. Battery cooling system solution

Example 4 relates to the battery cooling system of the present invention, Figure 14 is a battery cooling system system diagram, Figure 15 illustrates the air cooling type and water cooling type and phase change cooling type.

The battery cell 120 of the electric vehicle is the most expensive part of the vehicle parts, and the battery performance is directly related to the life of the vehicle and prevents vehicle performance, fuel efficiency improvement, reduced function, shortened lifespan, and deterioration of quality while overheating the battery due to overheating. In order to prevent the occurrence of (Thermal Runaway) and lead to an explosion and combustion accident, natural cooling or passive cooling, active cooling, or an additional cooling method and a thermal control management system are usually required.

Currently, lithium-ion batteries for electric vehicles have high energy density, and the voltage per cell is three times higher than that of nickel-based batteries, but due to the characteristics of using liquid or gel-type electrolytes, there is a risk of ignition and explosion, and low impact resistance. In order to secure safety, a protection circuit for preventing overcharge, overvoltage, and overcurrent is provided, while in the case of a vehicle where safety is emphasized, a mechanical supplement and an efficient cooling solution are essential.

The temperature of the battery is one of the most important factors affecting performance and life. Increasing the cell density of a large-capacity power source or a lithium ion battery pack is a major factor in the heat generation problem due to overload. An effective, simple and low-cost cooling solution is essential for electric vehicles because it needs to be controlled.

The general heat transfer process is a path function indicating the movement of heat, and the heat conduction process, which is a heat transfer process in a solid interior (free electrons, lattice shaking, etc.) is applied by Fourier's law, and is caused by fluid (liquid, gas) flow. Newton's Law is used for convection, which is a heat transfer process, and Stefan-Boltzmann' law is applied for heat radiation, which is a heat transfer process by light or electromagnetic waves.

The convection, which is a complex effect of conduction and fluid flow, which is a heat transfer process inside the solid, is a meticulous tube 100, an auxiliary filling tube 101, and a double-sided outer layer (face), which are the intermediate layer (core) 102 of the present invention. )(103) is the main path function related to the material and shape of the plate material, and the related Fourier law of heat conduction is as follows.

As given in the above law, the present invention is the battery cell 120, the heat conduction area (A) of the battery unit 120 is evenly distributed over the entire surface of the chassis portion 10, the individual battery module 121 is a meticulous tube ( Since it is individually stored in 100), it is possible to use the middle core (core), the centripetal tube (100), the auxiliary filling tube (101), and the double-sided outer layer (face) (103) as a heat sink, so that the battery is in a narrow place. It can be seen that it is clearly differentiated from the conventional pouch-type battery pack or assembly-type battery pack construction method.

In addition, in order to increase the amount of heat (Qcd) moving by conduction, the auxiliary filling pipe 101 is inserted into the space between the triangular empty space 145 and the double-sided outer layer 103 between the centripetal tube 100 and the centripetal tube for storing the battery. By adopting a method of further expanding the heat conduction and tropical flow area, the material of the meticulous tube 100 and the auxiliary filling tube 101 having an outer diameter of 25 mm for storing the battery is an aluminum alloy having a high thermal conductivity coefficient (k) (k=237W) /m·k) is more preferred.

Looking at the area of the heat sink 144 on a cross-section basis, the circumference of the triangular empty space between the centripetal tube 100 and the centripetal tube is P=αR1+βR2+γR3, and its value is π. The circumference of the empty space of 100) is 39.26 (12.5π)mm, the circumferential circumference (2πR) of the auxiliary filling pipe 101 is 12.12 (2π*1.93)mm, and the heat dissipation area of both sides is secured to be 24.25mm. By expanding to mm, the heat dissipation area of about 1.62π (5.08) times compared to the radius of the mesial tube 100 (R: 12.5mm) is secured, and if necessary, the shape of the auxiliary filling tube 101 is adopted as the profile section, the heat dissipation area ( A) can be expanded further.

In addition, as a ventilation measure to increase the conduction heat transfer rate (Qcd), a triangular empty space is provided between the outside of the centripetal tube 100, which is the battery storage space, and the auxiliary filling tube 101 and the external large-scale “heat exchange path”. Forced ventilation to generate heat by using natural ventilation using the difference between the temperature (△Tinner) and the outside air temperature (△Touter) and air flow according to the driving of the vehicle, and heat exchange through external power supply if necessary. The air cooling system 147 of the method is adopted as a basic cooling method.

The air-cooled cooling system 147 is provided with a heat exchange tube having an air intake 141 and an air exhaust 142, which are heat exchange channels (paths), and constitutes a heat exchange circuit with the auxiliary filling pipe 101, which is a cooling air flow pipe 140. However, an impeller is installed in the tube to configure the air-cooled system that adds a tube axial fan (143) to the air inlet (141) and air exhaust (142) to blow gas in the axial direction. The cooling efficiency is increased by the forced ventilation method that receives the signal from the sensor and exhausts it with external energy.

The water-cooled cooling method or the phase change material (PCM) cooling method, which further improves the efficiency of the air-cooled cooling system 147, takes care of storing the battery with the auxiliary filling pipe 101 as the cooling air oil pipe 140. Phase change material such as water cooling cooling system 148 or paraffin, ionic compound injecting water into the triangular empty space between the tube 100 and the auxiliary filling tube 101 with cooling water 145 ( 146) is a hybrid cooling method of the phase change material cooling system 148 that further improves the effect of heat storage and heat dissipation by injecting.

The characteristic of the above method is that water having a high specific heat (1cal/g°C) as a cooling water 145 or a phase change material (PCM) 146 such as paraffin does not flow between cooling channels, but has a small heat capacity and low heat conductivity. (0.31kcal/Nm³℃) is flowed to the auxiliary filling pipe 101 to cool the air oil pipe 140, and the cooled air oil pipe heats the battery cell 120 and the cooling water 145 or the phase change material 146. The absorption heat is absorbed to form a cooling method, and at this time, the waste heat of the heat exchanged battery cell 120 is discharged to the outside atmosphere or recycled in an automotive air conditioning (Heating, Ventilation, Air Conditioning, HVAC) system to improve cooling efficiency. .

In parallel with the basic air-cooled cooling system 147, the auxiliary filling pipe 101 is used as a cooling air oil pipe 14, and a triangular empty space between the auxiliary filling pipe 101 and the meticulous pipe 100 is water or a phase change material 146. The hybrid cooling-type latent heat storage system that injects heat is an effective method of thermal energy storage.It has high energy storage density and storage as a heat sink that absorbs and releases a large amount of heat generated by the battery due to the high latent heat possessed by water and PCM. It has the advantage of having an isothermal storage process that releases energy.

When the cooling system 14 of the present invention is arranged, the flat chassis 10 significantly distributes the battery cells 120 over the entire surface of the chassis, significantly lowering the heat concentration compared to conventional pouch-type batteries or aggregate-type battery packs in which batteries are concentrated. , By separately storing the battery cells in the center tube 100, the center tube 102, the center tube 102, the auxiliary filling tube 101, and the both-side outer layer (face) 103 are used together as a heat sink 144, the center tube (100) A heat dissipation area of about 1.62πR (5.08) times or more is secured compared to the radius (R), and thus the entire area of the chassis is utilized as a heat sink 144 that diffuses heat conduction and convection according to heat generation of the battery.

In addition, based on the air-cooled cooling (147) of the external atmospheric flow, the water-cooled cooling (148) for injecting the cooling water (145) into the refrigerant and the phase-change cooling (149) using the phase change material (146) using paraffin, etc. By providing a hybrid cooling method of ternary cooling that combines natural convection and forced air-cooled air-cooled, water-cooled, and phase-change material cooling methods, it has improvements such as reduced thermal stress, increased discharge time, and extended cycle life of expensive batteries.

Example 5. Flat chassis of an external chassis motor

The fifth aspect of the present invention relates to placing a motor portion, which is a power source of a vehicle, in a standard cross-sectional shape of a vehicle chassis frame of Example 1 without being stored in a positive sinusoidal hollow tube and placed outside the chassis. It is an embodiment suitable for a large-diameter or large-sized radial motor or an in-wheel motor in which the motor is located inside the wheel, rather than a caliber series motor.

Conventionally, in a conventional radial motor, the rotor and the stator are arranged parallel to the rotational axis, so the magnetic flux generated in the permanent magnet or electromagnet is linked to the coil in only one direction. Because of the relatively small size and the small diameter, it is difficult for the radial motor to have the shape of a large-diameter housing and a single shaft. When applied to an electric vehicle, the wheel drive shaft on the front wheel 113 or rear wheel 114 side ( 108) The motor is placed on the top, and for the four-wheel drive, the two-motor method, in which each motor is installed on the front and rear wheels, is common. In the case of the in-wheel motor, four motors are placed on each of the four-wheel wheels.

In order to place the traditional radial motor mass-produced and the in-wheel motor directly driving the wheel on the flat chassis 10 of the present invention, the motor must be mounted outside the frame of the chassis 10 with the above-described characteristics, and the external motor mounting method And a preferred embodiment of the mounting method of the additional battery module 121 is illustrated with reference to the cross-sectional view of the battery module of the chassis external motor flat chassis.

In order to enclose the radial motor, which is the power source of the vehicle, as the chassis external type, the front wheel drive must be secured to the bonnet and the front bumper seat 118, and the rear wheel drive must be secured to the trunk and rear bumper seat 119 to secure the radial motor mounting space. The motor secures the support point by inserting hollow cones into eight cylindrical cylinders inside the reinforcing bead portion of the steering/suspension unit 115 of the chassis frame, and bolts the bead nut portion arranged in three rows on the upper and lower sides. By fastening to support the motor, steering and suspension, the in-wheel motor can be installed relatively easily if the drive power line and the cooling system inlet and outlet are provided.

However, the place where the radial motor is mounted is a reinforcement bead 105 on the wheel drive shaft 108 of the front wheel 113 and rear wheel 114, an edge beam 106 of the chassis edge, and a dashboard rest 116 and a seat inside. A power train is installed by providing a power system (power train) fixing part having the teeth 117 as a support point, and placing the motor part 13, the wheel drive shaft 108, the differential gear part 136, the steering/suspension device, and the like. It is preferable to disperse the stress concentration and local stress generated by the entire surface of the chassis 10 and prevent fasteners such as pins and bolts from penetrating the fine pipe 100.

At this time, the positive motor 100 and the auxiliary filling pipe 101 are inserted into the positive sine wave hollow pipe 104 storing the serial motor 130 of Examples 1 and 3 to add a battery module 121 storage space. It is preferable to further increase the capacity of the battery unit 12 by securing the furnace, and if the 3, 4, 5, 4, and 3 meticules 100 are focused in a horizontal direction inside the hollow tube, the 19 batteries are focused. A bundle type battery module 121A capable of accommodating the mother module 121 may be added.

If the capacity of the battery module 121 is calculated based on the example of Example 2, 798 standard (19 modules*42 cells) standard cylindrical battery cells 120 are stored, and a maximum of 13.286 kWh (798*3.7V*) By securing the battery capacity of 4.5 Ah, it is possible to secure an incremental mileage of 66 km when driving 5 km per kWh, and 106 km when driving 8 km, and when combined with the capacity of the battery unit 12 of the standard flat chassis 10, a total of 6,954 (6,156) A total of 115.784 kWh (6,954*3.7V*4.5Ah) capacity is formed by constructing a power supply unit with +798 units of unit cells, so it is possible to secure a combined mileage of approximately 578km when driving 5km per kWh, and 926km when driving 8km.

On the one hand, the positive sine wave hollow tube 104 of the flat undercarriage 10 is removed, and the bead part for reinforcement on the central axis of the chassis 10 and the interlayer type intermediate layer 102A which arranges the meticulous tube 100 in its position. 105), the flat chassis 10A of the chassis-external motor that adds and forms the double-sided outer layer 103 has the same external shape as the standard flat chassis 10 of Example 1, and a battery module 121 that can be stored. The number of standard cylindrical battery cells 120 is approximately the same as that of the bundled battery module 121A in which 3, 4, 5, 4, and 3 of the above-mentioned mesial tubes are concentrated in a hexagonal shape inside the positive sine hollow tube 104. , By applying the example of Example 1, it can be relatively easily implemented.

Example 6. Wireless power transmission current collector Flat undercarriage

In the sixth aspect of the present invention, in the standard cross-sectional shape of the vehicle chassis frame of Example 1, a current collector for wireless power transmission is added to a floor pan of the chassis 10 to drive a road, rest area, garage, and parking. Regarding the wireless power transmission system 15 for wirelessly charging the battery cell 120 in a place such as a space, a plan view of the trinity type flat chassis of FIG. 3, a cross-sectional view of the bead for reinforcement of the flat chassis, and a wireless charging pad of FIG. It is exemplified with reference to the rest position and cross-sectional view.

In general, the spread of electric vehicles is a low total cost of ownership (TCO) and simple and convenient charging is an important criterion for consumers' purchase decision.To reduce the time and hassle of charging, wireless power transmission without connecting a charging cable to the vehicle body ( 'Wireless charging' is required to charge the battery with wireless power transfer), and it is installed on the primary power supply coil 152 of the electric power supply line or ground charging pad 151 embedded in the road, rest area, garage, parking space, etc. and at the bottom of the electric vehicle. The electric energy is converted into electromagnetic energy through a car pad 150, which is a current collecting device of the secondary side current collecting coil 153, to drive the motor of the vehicle or charge the battery cell 120.

Wireless power transmission is a transmission technology that converts electrical energy into a form capable of wireless transmission, such as a magnetic field or electromagnetic waves, and transmits it to a load. Currently, the biggest application field of wireless power transmission technology is wireless, which loads batteries that receive power. It is a charging system, and practical short-range wireless power transmission is divided into an ultra-short magnetic induction method and a short-range magnetic resonance method according to the energy transmission method and transmission distance.

The magnetic induction method is a method that is used in most wireless chargers that are currently commercialized due to the high standardization of technology, but it is difficult to expand the electric vehicle market due to the limitation of application because it can be used only in a very short distance within 10cm. The resonance) method can be charged in a short distance (around 1m to a few meters) and has the advantage of simultaneous charging of multiple devices and improved charging freedom, but it has low transmission efficiency, lack of technology standardization, safety verification, and secured price competitiveness. It has become a condition of popularization of transmission.

The spatial power generation prospect of wireless power transmission technology in the vehicle sector is evolving in three stages, so it is possible to recharge when stopped in a specific section such as static charging where charging is performed while parking is parked and waiting for intersection signals. -Dynamic charging), which can be classified as a dynamic charging method that can be charged while driving by incorporating a charging facility on the road. Simple and convenient wireless electric vehicle charging (WEVC) technology has high power transmission efficiency. In the end, it is expected that the wireless charging system will become the standard charging means for electric vehicles.

In order to provide the wireless charging service, the present invention provides a vertical sine wave hollow tube 104, a rim beam 106A, a rim beam 106B, and a wheel in the horizontal direction of the flat undercarriage 10 and the bottom pan. Secondary current collector coil (153) as a current collector for a vehicle in an uneven position and space formed by a drive shaft (108), a dashboard rest (116), and a seat bead (117) reinforcement bead (105) Secondary power supply consisting of a built-in Car Pad (150), a charging circuit unit (127) of the second embodiment, a main power distribution exchange system (MDSS) (125), and a battery management system (129). Constructing a system, wireless power to form an electromagnetic circuit and a ground-based charging pad (151) composed of a primary side power supply coil (152) such as a road, rest area, garage, parking space, and a control system A transmission system 15 is provided.

At this time, the thickness of the car pad 150 is equal to or less than 37.8494 mm, which is the protruding height of the arch shape of the positive sinusoidal hollow tube 104 and the reinforcing bead portion 106, and is the lowest ground height that is the height from the lowest portion of the vehicle to the ground plane. It is preferable to prevent air scratches and ground scratches on the lower surface of the vehicle caused by protrusion without eroding (ground clearance), and the circular secondary current collecting coil 153 embedded in the car pad 150 is the most dense circle. A regular hexagonal arrangement is preferred, with a hexagonal grid arrangement that occupies 90.7% of the area of the plane (rectangular -78.5%) to maximize space and material savings and current collection efficiency, and the fixing of the carpet 150 is a reinforcement bead ( Fastened with a plurality of bolts to the bead nut portion 105b arranged in three rows of 105, the cable is accommodated inside the cylindrical cylinder 105a, and the outer space 106x of the rim beam 106 circumferentially outside the chassis 10 ) To connect the charging circuit unit 127 to the main power distribution exchange system (MDSS) 125 so that the wiring cable is not exposed outside the chassis 10.

The car pad 150 placed on the bottom pan of the flat undercarriage 10 adds a plurality of uneven spaces between the positive sine hollow tube 104 and the reinforcing bead portion 105. Since the wireless charging system 15 can be standardized and appropriately adjusted according to market conditions, the number of the car pads 150 can be adjusted as necessary, or the car pads 150 can be mounted relatively easily as a post service after the vehicle is shipped. It has the characteristics of being easily adaptable to the evolution of road infrastructure such as smart roads because it can secure redundancy.

Example 7. Horizontal flat chassis shape

The seventh aspect of the present invention relates to a change in the horizontal direction of an arrangement of a mesial tube that is a core for storing a battery in a standard cross-sectional shape of an automobile chassis frame of Example 1 in the horizontal direction. It is suitable for a special vehicle for driving a separate vehicle with a short axle distance or a front wheel and a rear wheel, and is illustrated with reference to the shape diagram of the horizontal chassis portion of FIG. 18.

When the arrangement of the mesial tube 100 is changed in the horizontal direction, the bead portion 105 for reinforcing should be arranged in the longitudinal direction of the positive sinusoidal hollow tube 104 of Example 1, and the amount of the motor 13 accommodated. The sine wave hollow tube 104 is located on the wheel drive shaft 108 on the reinforcing bead section 105, and the technical idea other than the fact that it is located separately from the front wheel drive shaft and the rear wheel drive shaft is roughly the same as in Example 1, and thus detailed description is omitted.

However, the motor unit 13, which is divided into the front wheel 113 and the rear wheel 114, can be used in industry in three combinations of front wheel driving, rear wheel driving, and front and rear wheel driving as required, except for the front and rear wheel 4 wheel driving system. In the case of the two-wheel drive of the front wheel 113 driving and the rear wheel 114 driving, the capacity of the battery cell 120 is further expanded by adding a centripetal tube 100 to the positive sine wave hollow tube 104 that does not contain a motor. can do.

Since the horizontal flat-type undercarriage 10 is vulnerable to the impact load in the full-length direction, which is the direction in which the vehicle travels, a longitudinal reinforcement bead 105 is added to the center axis of the chassis to add strength and strength in the longitudinal direction. To strengthen the impact, the vehicle's bonnet and front bumper set-up portion 118 and the trunk and rear bumper set-up portion 119 are multi-bonded to the rim beam 106 and the reinforcement bead portion 105 to impact the vehicle in the direction of travel. The method of absorbing the load to the entire chassis portion 10 is more preferable.

Example 8, internal combustion engine, HEV, PHEV, gas turbine, hydrogen fuel cell vehicle

In the future, it is highly likely that various types of vehicles will coexist. Traditional internal combustion engine vehicles, hybrid vehicles, electric vehicles, or hydrogen fuel cell vehicles will be used for a considerable period of time depending on the purpose and economics. Will depend on.

Example 8 relates to a hybrid vehicle (HEV), a plug-in hybrid vehicle (PHEV) and a hydrogen fuel cell vehicle (FCV), which are evolutionary forms of an internal combustion engine vehicle and an internal combustion engine as another application example of the present invention. A multi-bundle type fuel tank in consideration of the material mechanical properties related to stress acting on a wall surface of a structure in which internal pressure due to compressed gas or liquid is generated will be exemplified with reference to the shape diagram of the micro fuel tank in FIG. 19.

It is necessary to provide a separate fuel tank by utilizing the centripetal tube 100 of Example 1 as a micro tank for storing fossil fuels such as hydrogen fuel, gasoline, diesel, natural gas (LNG), and liquefied petroleum gas (LPG). No, high-pressure and flammable fuels are widely distributed and stored in the entire lower part of the undercarriage, thereby minimizing the risk of fuel explosion and increasing the degree of freedom in vehicle design.

The micro fuel tank 16 stored in the unit centripetal tube 100 has a cylindrical body 160 in which circumferential stress (σ₁, circumferential stress) and axial stress (σ₂) of 23mm are applied. ) And a hemispherical shell convex portion 161 having a radius of 11.5 mm acting in a tangential direction to the curved surface of the shell surface at both ends and a membrane stress (σ, membraine stress), a closed structure having a circular cross section Phosphorus pressure vessels have the same characteristics as compressed air tanks.

The micro fuel tank 16, which is a pressure vessel, has circumferential stress σ₁=pr/t (p: internal pressure, r: radius, t: wall thickness) and axial stress σ₂=pr/2t, and circumferential stress 162 is axial. It becomes twice (σ₁=2σ₂) of the directional stress 163, and the meticulous tube 100, the auxiliary filling tube 101, and the double-sided outer layer according to the operating conditions in which the internal pressure of the fuel tank 16 exceeds the air pressure of the external atmosphere. The circumferential stress σ₁ (162) is evenly distributed in a geometric shape with a quadruple material body that forms (103), and both ends have an hemispherical shell convex portion 161 and an edge beam that are ideal forms to withstand internal pressure. The axial stress σ₂(163) is dispersed into the web (166).

The compact fuel tank 16 composed of the cylindrical body 160 and the hemispherical shell convex portions 161 at both ends has hydrogen fuel and gasoline, diesel, natural gas (LNG), liquefied petroleum without a separate installation space. Fossil fuels such as gas (LPG) can be widely distributed and loaded on the entire cross-section of the chassis 10 to solve fire and explosion problems caused by high integration of large-sized tank-type pressure vessels that require separate loading space and to reduce the load on the chassis. (10) Spreading and dispersing over the entire cross-section, the center of gravity can be lowered below the origin O of the wheel drive shaft 108 to further improve the stability of the driving of the vehicle.

Since the volume V of the micro fuel tank 16 stored in the unit centrifuge tube 100 is given by the width of the circle (S = πR² or πD²/4)*length (L), the total fuel storage volume can be easily obtained, and a medium-sized vehicle When calculated as a standard, when the inner diameter of the cylindrical body 160 is 21 mm, a volume of about 150 liters can be secured inside the centripetal tube 100, so that the fuel storage space is more than twice that of a conventional medium-sized vehicle of about 70 liters. Can be designed without a separate large fuel tank, improving the freedom of vehicle design.

In addition, the method of distributed storage in hundreds (medium-sized vehicles-174) of the centripetal tubes 100 than one large storage tank that is widely used has several advantages in terms of safety, such as explosion or fire of hydrogen, gas, and fossil fuels. It is obvious that the combination of the cooling method using the auxiliary filling pipe 101 between the centripetal tubes 100 makes it possible to more safely store cryogenic/high-pressure hydrogen fuel or high-pressure gas and liquid fuel.

In the case of a conventional internal combustion engine vehicle, an engine is mounted on the flat-body undercarriage bonnet 118 of the present invention and supplied with fuel from the micro fuel tank 16 and a fuel pump to drive a power system (power train) and water jacket of the engine. When the cooling water 145 is filled and circulated in a part of the plurality of fine tubes 100, which are the intermediate layer 102 of the chassis 10, the water cooling type cooling system can be easily configured without a separate evaporator (radiator), and the engine exhaust system uses an exhaust pipe. When piping with the Yangjeong-Hyun hollow tube 104 or the fine-seated tube 100, both the evaporator and the exhaust system can be integrated into the chassis, simplifying vehicle structural design, reducing drag resistance of aerodynamics, and improving design freedom.

In the case of a hybrid vehicle (HEV) or a plug-in hybrid vehicle (PHEV), a small internal combustion engine is placed in the bonnet portion 118 of the vehicle and fossil fuel stored in the micro fuel tank 16 of the centripetal tube 100 is supplied. As a method, a method of utilizing as a parallel-parallel hybrid vehicle may be combined, and at this time, the drive shaft 137 of the motor unit 13 stored in the positive wave hollow tube 104 of the chassis 10 is used as a propeller shaft. And the matching gear part 132 and the differential gear part 136 can be used as a power system to demonstrate a hybrid vehicle for both an internal combustion engine and a motor.

The gas turbine car is supplied with natural gas (LNG) and liquefied petroleum gas (LPG) stored in the centrifuge tube 100 by adding a long-sized ultra-small gas turbine section to the Yangjeong-Hyunpa hollow tube 104, or used as a dedicated gas turbine car. The front wheel 113 of the sinusoidal hollow tube 104 can be combined with a method of using a hybrid vehicle in which the motor unit 13 is placed and the rear wheel 114 is mounted with an ultra-small gas turbine.

The hydrogen fuel cell vehicle (FCV) is provided with a fuel cell stack in the bonnet 118 and receives oxygen and electricity by receiving hydrogen fuel stored in the micro fuel tank 16 of the centripetal tube 100. After generating electrical energy through a chemical reaction, the motor unit 13 stored in the positive sine wave hollow tube 104 of Example 3 is driven, and at this time, the auxiliary battery cell 120 for driving the motor is a center battery storage space It is preferable to facilitate the addition and replacement of the battery cell 120 by installing in (111).

10: flatform chassis (flatform chassis) / chassis
100: Sesimwan
101: auxiliary filling pipe
102: middle layer
103: double-sided outer layer
104: Yang Jung-Hyeon Hollow Hall
105: bead for reinforcement
106: Border beam (A/B)
107: neutral axis of the chassis material
108: wheel drive shaft
109: channel show
11: body support
110: Wheel shaft rotation origin (O)
111: center side battery storage space
112: side side battery storage space
113: front wheel
114: rear wheel
115: Steering/suspension suspension
116: dashboard inside
117: seat rest
118: bonnet and front bumper inside
119: trunk and rear bumper rest
12: battery unit
120: standard cylindrical battery cell
121: battery module
122: battery socket
123: battery outlet
124: module outlet
125: main distribution switch system (MDSS)
126: electric equipment
127: charging circuit
128: battery module stopper
129: battery management system
13: motor unit
130: serial motor
131: drive gear outlet
132: matching gear
133: double helical gear (double helical gear)
134: auxiliary shaft (Aux. shaft)
135: drive pinion (D)
136: differential gear unit
137: drive shaft of the motor unit
138: Uneven groove
139: shock insulation pad
14: cooling system
140: cooling air oil pipe
141: air intake
142: air vent
143: axial flow blower
144: heat sink
145: coolant (water)
146: phase change material
147: air cooling system
148: water cooling system
149: phase change cooling system
15: wireless power transmission system
150: Car Pad
151: ground charging pad
152: primary feeding coil
153: Secondary feed coil
16: Micro fuel tank/other
160: cylindrical body
161: hemispherical shell convex portion
162: circumferential stress
163: axial stress
164: fuel inlet
165: fuel outlet
166: Border beam web
167: bolt
168: welding
169: socket lead wire

Claims (16)

As the basic structure of the vehicle, the chassis is a structural frame that is a chassis,
A frame that constitutes a chassis portion;
A positive sine wave hollow tube penetrating the chassis portion vertically and storing a motor portion; And
A plurality of beads for transverse reinforcement;
It comprises,
The frame is a hollow tube (hollow) tube (center) horizontally, three or more multi-stage, and hexagonal lattice-shaped member focused on the middle layer (core),
On both sides of the intermediate layer, two thin plate materials (steel plate or aluminum plate, etc.) made of a high-strength material form an outer layer on both sides,
The core of the mesial tube serves as a filler supporting the plate, which is the outer layer,
Stabilizing the outer layer against wrinkles or buckling,
Filling the empty space more closely by inserting an auxiliary filling tube of the ultra-fine deep tube in the empty space between the hollow mesial tube which is the intermediate layer and between the mesial tube and the outer layers of both sides,
An integrated flat-type chassis, characterized in that it is formed of a three-layer structure of the intermediate layer consisting of the outer layer on both sides of the plate, the focusing-type center tube, and the auxiliary filling tube. According to claim 1,
The positive sine wave hollow tube, which is a hollow corrugated tube for storing the motor part,
36 in the circumferential direction of the wrinkles of the convex shape in the outer diameter direction, and placed vertically on the central axis of the center of the frame so that the ridges and valleys of the wrinkles are directed in the longitudinal direction of the frame,
The reinforcing bead portion has a cross section of an arch shape, and a plurality of pieces in the horizontal direction of the frame are added to the upper and lower surfaces of the mesial tube to be orthogonal to the mesial tube to form an intermediate layer together with the mesial tube,
An edge beam is added to the edge of the frame,
The rim beam is a structural member of a WF beam cross-sectional shape, bonded to both outer layers of the frame to support an axial external force or load, increase shear stress such as tensile, torsion, bending, compression, etc.,
The outer layer plate is molded to be assembled according to the shape of the reinforcement bead portion of the intermediate layer, so that the outer layer plate material is formed by joining with the intermediate layer to form a sandwich panel (sandwich panel) shaped flat integrated type Chassis (扁平型車臺, flatform chassis). The method according to any one of claims 1 to 2,
An energy unit for driving a motor, an electric device, and the like by forming a cylindrical standard battery in series is formed in the plurality of mesial tubes forming the intermediate layer of the frame,
The sine wave hollow tube on the central axis of the frame in the vertical axis direction has a diameter of at least twice the thickness of the core of the mesial tube, and stores a serial motor as a driving source of the vehicle inside the hollow tube.
The space between the meticulous pipes fills the auxiliary filling pipes to make an air flow path (channel),
The remaining empty space between the meticulous tube and the auxiliary filling tube is filled with cooling water or a phase change material,
By utilizing the auxiliary filling pipe as a cooling air flow pipe that emits heat to the outside atmosphere, a cooling system of heat exchange with the heat sink function of the outer layer is formed, so that the motor part as a driving source stored in the positive sine wave hollow pipe and the attentiveness An integrated flat-type chassis, characterized in that a battery part that is an energy source stored inside the tube, the meticulous tube, the auxiliary filling tube, and the frame using the outer layers of both sides as a heat sink are integrated into one chassis. chassis). According to claim 2,
A reinforcement bead portion having a cross section of the arch orthogonal to the mesial tube, which is an intermediate layer, has a function of reinforcing the intermediate layer and distributing external force to the mesial tube, and pins or bolts when attaching a vehicle accessory to the chassis. It has a function as a place of installation,
Four cylindrical cylinders and a plurality of bead nut parts in three rows in the cross-section direction are provided inside the reinforcing bead part, inserting a hollow cylinder beam into the cylindrical cylinder to secure a support point, and the reinforcing bead part By fastening bolts and nuts to join the vehicle body (body) and attachments, pins or bolts do not penetrate fasteners such as pins or bolts, so that stress concentration and local stresses generated in holes or notches are in the shape of an arch. An integrated flat-type chassis, characterized in that it is dispersed to the entire surface of the frame via the double-sided outer layer and the reinforcement bead. According to claim 2,
The border of the frame edge,
Insert the outer layer on both sides of the frame on one side of the inner side of both sides of the frame,
The edge of the flange and the frame of the frame beam are joined by overlapping joints or fillet welding.
On the other side of the outer side of the rim beam, steering and suspension arrangement on the wheel drive shaft, fender and body support, bonnet and front bumper inside, trunk and rear bumper inside, etc. are riveted, bolted, welded, etc. With the body,
The empty space between the upper and lower flanges and the web outside the rim beam, the duct of the harness cable and the battery wiring cable, and the duct of the battery and the motor cooling pipe, are added to the U-shaped channel beam. By separating the space from the outer side,
An integrated flat flat chassis, characterized in that the flange and web of the rim beam and the flange and web of the channel beam are combined to form an assembled beam of a box beam. The method according to any one of claims 1 to 3,
The battery mounted on the mesial tube is stored in series in a battery socket provided with a negative (-) electrode lead wire, is accommodated in the mesial tube, and includes a positive (+) electrode terminal at the end, and a battery module for storing the mesial tube. To form,
In the battery module, a battery outlet connected to a power circuit, a plus (+) terminal, and a minus (-) terminal are fastened in a concave-convex shape, and connected to a power source by a power management system and a star method. The battery part of the center axis, based on the positive sine wave hollow tube, is divided into a center side battery storage space and a side side battery storage space, but the battery modules of both side side deep-seated pipes are for base power, and the center side deep-pipe module is It is used for intermediate power or peak power, but the center-side center tube module is equipped with a detachable inlet part equipped with a locking device as an option so that it can be easily detached. Integrated flat-type chassis, characterized in that (扁平型車臺, flatform chassis). The method of claim 6,
Each battery module is connected to a main distribution & switching system (MDSS),
The main power distribution switching system (MDSS) has N inputs and M output lines connected to a switch, and is a semiconductor device for power having a bidirectional power switching (Matrix Switching) function of a matrix converter circuit function of N×M switch elements ( Power Semiconductor Devices, PSD),
The number of charge/discharge cycles of the battery cells by allocating the order by separating each module by charging and discharging, circuit blocking, sensor signal (temperature, overcurrent, overvoltage, etc.) detection, battery discharge and charging sequence designation, and regenerative braking battery module assignment. Integrated flat type chassis, characterized by shortening the lifespan and reducing the charging time. The method according to any one of claims 1 to 3,
The series motor, which is a power source stored in the positive sinusoidal hollow tube, has a concave groove having a diameter of 10 mm circumscribed to the circumferential surface of the motor housing and 36 concave recesses formed by a negative sinusoidal concave groove inside the positive sinusoidal hollow tube. )Used as a space for storing cooling pipes, coil wiring, and pads for shock insulation by providing grooves,
6 water-cooled cooling system piping pipes, 6 air-cooled cooling system air oil pipes, 12 motor coil guide parts and 12 shock-insulating pads are housed, but the elastic rubber-made shock insulation pads for vibration and shock absorption purposes, √2 times (1.4142) diameter of the receiving groove 10 mm in diameter, secures the elastic compression capacity, pulls it into the concave-convex groove, and then loosens it to fix the motor to fix the elasticity. An integrated flat undercarriage characterized by storing the motor part without bolts or wedges causing concentration, and reducing the fatigue of the motor and the frame structure by isolating the rotational vibration of the motor and the rolling vibration of the wheel to each other. (扁平型車臺, flatform chassis). The method of claim 8,
The serial motor, which is a power source stored in the positive sine wave hollow tube, drills the outer layer of the frame and the positive sine wave hollow tube, where the motor axis of rotation intersects the wheel axis in a direction orthogonal to the front wheel of the drive gear outlet. , Provided on the rear and front and rear wheels, combines the front, rear or four-wheel drive with one serial motor,
A double helical gear that removes an axial load by combining a pair of helical gears with opposite torsion angles is mounted on the drive shaft of the serial motor part as a drive gear part of a power system (power train). , In the middle of the drive gear portion and the differential gear portion of the serial motor portion, the matching gear portion consisting of a double helical gear and an auxiliary shaft (Aux. shaft) is placed to separate the serial motor portion and the wheel portion to separate the motor drive shaft. An integrated flat-type chassis, characterized by raising the origin (O), matching the deceleration effect at a constant rate, and the load impedance (Z). The method according to any one of claims 1 to 6,
In order to maximize conduction and convection, which is a process of heat transfer of the battery, the battery is distributedly stored in the entirety of the mesial tube to increase the heat dissipation area, the space between the mesial tube and the space between the mesial tube and the outer layer, the auxiliary filling By expanding the heat conduction and convective area of the battery by filling the tube, the heat dissipation area of 1.62π (5.08) times larger than the radius of the mesial tube (R) is expanded, and the outer surfaces of both surfaces in contact with the outside atmosphere are utilized as a heat sink,
By connecting the space between the fine pipes and the auxiliary filling pipe to an air flow pipe (tube) having an intake port and an exhaust port, and adding an axial flow blower to blow gas in the axial direction of the flow pipe, to drive with external energy when the temperature rises An integrated flatform chassis, characterized by air-cooled cooling of the battery cooling system that heats to the outside atmosphere. The method of claim 10,
In addition to the air-cooled cooling method of the battery cooling system, a water-cooled cooling method in which water is added as a coolant to the empty space between the center tube and the auxiliary filling pipe housing the battery, and heat exchange effects of heat storage and heat dissipation In order to further improve the phase change material cooling method for injecting phase change materials such as paraffin and ionic compounds, and forcibly blowing the auxiliary filling pipe with an axial flow blower, discharge the waste heat of the battery cell to the outside atmosphere or Recycling to automotive air conditioning system,
Based on an air-cooled cooling method that discharges heat from the battery cell to the outside, but in combination with a water-cooled or phase-change material cooling method, a combination of air-cooling and water-cooling, or a combination of air-cooling and phase-changing material cooling methods, hybrid cooling Integrated flat-type chassis, characterized by improving the cooling efficiency in a manner. The method according to any one of claims 1 to 11,
Without storing the in-line motor as the driving source of the car inside the sine wave hollow tube on the central axis in the longitudinal axis direction,
Three, four, five, four, and three stacked fine pipes 100 are horizontally stacked, and a plurality of auxiliary filling pipes are focused in a hexagonal shape to add 19 battery modules,
Chassis frame Install a radial motoor or an in-wheel motor inside the wheel as an electric vehicle power source in the bonnet on the front wheel side and the trunk portion on the rear wheel side.
The power train of the radial motor includes a dashboard inner seat and seat seat, a reinforcement bead on the wheel drive shaft, and a power system fixing part having a rim beam as a support point, such as a motor part, a wheel drive shaft, and a differential gear part. , Steering and suspension devices,
The support part of the in-wheel motor installed inside the wheel secures a support point by inserting a hollow cone into eight cylindrical cylinders inside the bead for reinforcement of the steering and suspension of the chassis frame.
Bolted to the bead nut section arranged in three rows on the upper and lower sides to support the motor, steering and suspension,
An in-wheel motor is installed with a driving power line and a cooling system inlet and outlet.
The battery part, which is an energy source stored inside the mesial tube, and the frame that uses the mesial tube, the auxiliary filling tube, and the outer layer of both sides as a heat sink are integrated into one chassis, and the motor part, which is the power source, is installed as a chassis exterior type. Integrated flat-form chassis. The method according to any one of claims 1 to 12,
Positions formed by the vertical sine wave hollow pipes formed in the bottom pan of the flat undercarriage and the reinforcing bead portions and the rim beams in the horizontal direction and the concavo-convex spaces Place the receiving pad or car pad (CarPad), which is a wireless charging current collector for a vehicle,
The car pad has a circular secondary current collector coil arranged in a hexagonal lattice shape inside, forming an electromagnetic circuit with a primary charging coil of a ground charging pad or a feeder on the road, and receiving electric energy as electromagnetic waves to receive battery cells. To provide a wireless power transfer (wireless power transfer) circuit for charging or driving the motor,
The thickness of the car pad is less than the protruding height of the arch shape of the positive sine wave hollow tube and the reinforcing bead portion 106,
The fixing of the car pad is fastened with a plurality of bolts to the bead nut portion arranged in three rows in the reinforcing bead portion,
The wiring cable of the car pad is provided with a wireless power transmission system that is received inside the cylindrical cylinder of the reinforcing bead, and is drawn out to the outer space of the rim beam around the chassis, and connected to the charging circuit and the main distribution exchange system. Integrated flat-type chassis, characterized in that (扁平型車臺, flatform chassis). The method according to any one of claims 1 to 13,
The arrangement direction of the mesial tube forming the vehicle chassis frame is changed from a standard vertical direction to a horizontal direction, but the bead reinforcement orthogonal to the mesial tube direction is arranged in the vertical direction, and the sine wave hollow tube is arranged in the front wheel drive shaft and the rear wheel. Separated by a drive shaft, the integrated flat wheel chassis (대平型 있는), characterized in that the drive of the motor can be used in three combinations of front-wheel drive, rear-wheel drive and front-wheel drive. The method according to any one of claims 1 to 14,
A hydrogen fuel cell vehicle that converts the fine tube forming a vehicle chassis frame into a hydrogen fuel storage tank and mounts a fuel cell, or
A turbine engine vehicle that converts the fine pipe into a tank for storing gas or liquid fossil fuel, and mounts a small-diameter gas turbine on the positive sine wave hollow pipe, or
An internal combustion engine vehicle equipped with an internal combustion engine engine on the bonnet, or
Converting the mesial tube into a space for storing fossil fuels and batteries, and using it as a hybrid vehicle (HEV) or a plug-in hybrid vehicle (PHEV), which uses a serial motor and a gas turbine or an internal combustion engine of the positive sine wave hollow tube. Integrated flat-type chassis, characterized in that (扁平型車臺, flatform chassis).
The method of claim 15,
The ultra-small fuel tank stored inside the meticulous tube,
A pressure vessel of a closed structure having a circular cross-section, having a cylindrical body having an outer diameter (D) of 23 mm and a hemispherical shell convex portion of a radius (R) of 11.5 mm at both ends. The stress (σ₁) is distributed in a geometric shape to the fuel tank, the meticulous tube, the auxiliary filling tube, and the body of the quadruple material of the double-sided outer layer.
The axial stress (σ₂) of the hemispherical shell convex portion is in addition to the hemispherical shell convex portion which is an ideal form to withstand the internal pressure, and is integrated flat flat chassis, characterized in that it is dispersed into the web of the rim beam. ).

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