Automobile chassis and electric vehicles

Abstract

The present invention relates to an automobile chassis and an electric vehicle. The automobile chassis includes a chassis having a battery cavity therein for mounting a power battery and a control system; an air inlet duct mounted on the chassis and located outside the battery cavity, with the air inlet of the duct facing the direction of travel of the vehicle; and a filter assembly mounted within the air inlet duct for blocking dust and removing moisture. The battery cavity also includes an opening extending through the chassis along its height and at least one side cavity wall disposed along its width or length, the side cavity wall being provided with an air outlet, the air inlet duct communicating with the air outlet and supplying air into the battery cavity through the air outlet. The automobile chassis and electric vehicle of the present invention can reduce the size of the battery cavity opening and reduce the likelihood of dust entering the battery cavity without affecting the heat dissipation effect of the power battery.

Description

Technical Field

[0001] The present application belongs to the technical field of electric vehicle chassis, and specifically relates to an automobile chassis and an electric vehicle. Background Art

[0002] Currently, electric vehicle chassis require an opening in the middle to form a battery cavity for mounting the power battery. To dissipate heat from the power battery, the area of ​​the chassis housing the power battery is typically opened wider, allowing for better utilization of wind energy during driving to dissipate heat. However, this cooling method can cause a significant amount of dust to enter the power battery, impacting its performance. Summary of the Invention

[0003] The object of the present invention is to provide an automobile chassis and an electric vehicle, which can reduce the opening size of the battery cavity and reduce the probability of dust entering the battery cavity without affecting the heat dissipation effect of the power battery.

[0004] The first aspect of the present invention discloses an automobile chassis, comprising: a chassis, wherein a battery cavity is provided in the chassis, and the battery cavity is used to install a power battery; an air inlet duct, wherein the air inlet duct is installed on the chassis and is located outside the battery cavity, and the air inlet of the air inlet duct faces the driving direction of the automobile; a filter assembly, wherein the filter assembly is installed in the air inlet duct and is used to block dust and dehumidify; the battery cavity also includes an opening passing through the chassis along the height direction of the chassis, and at least one side cavity wall provided along the width or length direction of the chassis, the side cavity wall is provided with an air outlet, the air inlet duct is connected to the air outlet, and air is supplied to the battery cavity through the air outlet.

[0005] In an exemplary embodiment of the present invention, a fan blade is further provided in the air inlet duct, and the fan blade is installed in the air inlet duct, and the fan blade can be driven by the airflow flowing through the air inlet duct; the automobile chassis also includes a conversion mechanism, and the conversion mechanism includes a transmission assembly and a power generation assembly electrically connected to the control system of the automobile; wherein the transmission assembly is connected to the fan blade, and the transmission assembly moves synchronously with the fan blade; the power generation assembly is connected to the transmission assembly, and is driven by the transmission assembly to generate electricity for powering the electrical equipment of the automobile.

[0006] In an exemplary embodiment of the present invention, the power generation component includes a power storage device and a power generation device connected to the control system; the power generation device is connected to the transmission component and is driven by the transmission component to generate electricity; the power generation device is electrically connected to the power storage device, and the power storage device is used to store the electrical energy generated by the power generation device and to supply power to the electrical equipment of the vehicle.

[0007] In an exemplary embodiment of the present invention, the conversion mechanism also includes a first movable connection member and a driving device electrically connected to the control system; the first movable connection member is movably connected to the wall of the air inlet duct; the driving device is electrically connected to the power storage device and is driven by the power storage device; the driving device and the power generation device are both connected to the first movable connection member, and the first movable connection member has a power generation position and a driving position; wherein, when the first movable connection member moves to the power generation position, the power generation device is connected to the transmission assembly, at which time, the transmission assembly moves under the drive of the fan blades and drives the power generation device to generate electricity; when the first movable connection member moves to the driving position, the driving device is connected to the transmission assembly and is powered by the power storage device to drive the transmission assembly to move, at which time, the transmission assembly drives the fan blades to rotate and generates airflow to supply air to the battery cavity.

[0008] In an exemplary embodiment of the present invention, the air inlet duct is further provided with a plurality of the fan blades; the transmission assembly includes a transmission chain, a driving gear and a plurality of driven gears; wherein the fan blades are respectively connected to the driven gears in a one-to-one transmission manner; each of the driven gears is meshed with the transmission chain; the driving gear is connected to the transmission chain in a transmission manner, and a first socket end and a second socket end are respectively provided on both sides of the driving gear, the first socket end is used to connect to the input end of the power generation device; the second socket end is used to connect to the output port of the driving device.

[0009] In an exemplary embodiment of the present invention, the automobile chassis further comprises a heat conducting member, an elastic component and a cover member, wherein the heat conducting member is connected to the side cavity wall and is at least partially located in the battery cavity for transferring heat in the battery cavity to the elastic component; the elastic component is installed between the inner wall of the chassis and the heat conducting member and deforms according to temperature changes in the battery cavity; the cover member is connected to the elastic component, one movable end of the cover member is connected to the chassis, and the other end of the cover member is located in the air outlet; wherein the cover member has an initial position for closing the air outlet and an open position for opening the air outlet; when the temperature in the battery cavity is lower than or equal to a first preset value, the elastic component does not deform and the cover member is in the initial position; when the temperature in the battery cavity gradually exceeds the first preset value, the elastic component gradually deforms and drives the cover member to move from the initial position to the open position until the cover member is in the open position.

[0010] In an exemplary embodiment of the present invention, the elastic component includes an airbag and a first elastic return member, the airbag is located between the heat conductor and the cover member, the airbag is in contact with the heat conductor and is expanded by the heat transferred by the heat conductor; one end of the first elastic return member is connected to the cover member, and the other end of the first elastic return member is connected to the inner wall of the chassis; wherein, in the process of the temperature in the battery cavity gradually increasing from the first preset value, the volume of the airbag gradually becomes greater than the second preset value, the cover member gradually moves from the initial position to the open position, and drives the first elastic return member to undergo elastic deformation until the cover member is located in the open position; in the process of the temperature in the battery cavity gradually recovering from higher than the first preset value to equal to the first preset value, the volume of the airbag gradually recovers from greater than the second preset value to equal to the second preset value, the first elastic return member gradually recovers the elastic deformation, and drives the cover member to gradually move from the open position to the initial position.

[0011] In an exemplary embodiment of the present invention, a heat preservation chamber is further provided in the chassis, the heat preservation chamber is spaced apart from the battery chamber, and the heat preservation chamber is connected to the battery chamber through an exhaust channel; the heat preservation chamber is provided with a first exhaust port and a second exhaust port, and the first exhaust port and the second exhaust port are both provided with a control valve for controlling their opening and closing; wherein, a heating component is further provided in the heat preservation chamber, the heating component is provided in the exhaust channel, the heating component is used to heat the airflow passing through the exhaust channel, and connect the airflow to the automobile air-conditioning duct through the first exhaust port; the heat preservation chamber can discharge the airflow therein to the battery chamber and the part outside the automobile air-conditioning duct through the second exhaust port.

[0012] In an exemplary embodiment of the present invention, the heating component includes: fan blades, a third movable connecting member, a friction member and a heating member, wherein the fan blades are located in the heat preservation chamber, and the fan blades are arranged relative to the vent of the exhaust channel; the third movable connecting member is connected to the fan blades and can move with the fan blades; the friction member and the heating member are located in the exhaust channel, the heating member is connected in the exhaust channel, the friction member is transmission-connected to the third movable connecting member, and the friction member is in contact with the heating member; the friction member can generate heat by friction with the heating member under the drive of the third movable connecting member.

[0013] A second aspect of the present invention discloses a vehicle cabin and the above-mentioned vehicle chassis, wherein the vehicle cabin is connected to the vehicle chassis.

[0014] This application has the following beneficial effects:

[0015] In an embodiment of the present invention, an air inlet duct is installed on the chassis of the automobile, and the air inlet of the air inlet duct is facing the direction of travel of the automobile. Therefore, it can utilize the airflow during the driving of the automobile to supply air into the battery cavity through the air outlet, so as to achieve heat dissipation of the power battery in the battery cavity.

[0016] Secondly, the air outlet is arranged on the side cavity wall of the battery cavity, and the air inlet pipe is located outside the battery cavity. That is to say, while the air inlet pipe supplies air into the battery cavity, it does not occupy the size of the battery cavity opening, so it does not affect the function of the opening for ventilation and heat dissipation, thereby increasing the overall air intake into the battery cavity and improving the heat dissipation effect of the power battery.

[0017] Furthermore, a filter assembly is installed within the air intake duct to prevent dust and other debris from entering the battery cavity through the duct. It also dehumidifies the air, removing moisture from the air and ensuring dry air for heat dissipation, thus protecting the power battery. Therefore, while increasing the air intake into the battery cavity, the chance of dust and other debris entering the cavity is minimized.

[0018] Based on this, the vehicle chassis can reduce the size of the battery cavity opening by adjusting the air intake volume of the air intake duct and increasing the number of air intake ducts and air inlets. Ultimately, it is possible to reduce the size of the battery cavity opening without affecting the heat dissipation of the power battery and reduce the chance of dust entering the battery cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are incorporated into and constitute a part of this specification, illustrate embodiments consistent with the present invention, and together with the description, serve to explain the principles of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and it is clear that those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0020] Figure 1 A schematic diagram of the three-dimensional structure of the automobile chassis according to an embodiment of the present invention is shown.

[0021] Figure 2 The present invention is shown Figure 1 A structural schematic diagram of the automobile chassis from another perspective is shown.

[0022] Figure 3 A schematic front view of the interior structure of a vehicle chassis according to an embodiment of the present invention is shown.

[0023] Figure 4 The present invention is shown Figure 3 The enlarged structural diagram of point A of the automobile chassis is shown.

[0024] Figure 5A schematic structural diagram of the connection between the first bevel gear, the second bevel gear and the half gear according to an embodiment of the present invention is shown.

[0025] Figure 6 A schematic structural diagram of the air inlet according to an embodiment of the present invention is shown.

[0026] Figure 7 A schematic diagram of the top structure of the air inlet duct according to an embodiment of the present invention is shown.

[0027] Figure 8 The present invention is shown Figure 7 The enlarged structural diagram of point B of the air inlet pipe is shown.

[0028] Figure 9 A schematic diagram of the top structure of a portion of the chassis described in an embodiment of the present invention is shown.

[0029] Figure 10 The present invention is shown Figure 9 A schematic diagram of the partial enlarged structure of position C of the chassis is shown.

[0030] Description of reference numerals:

[0031] 1. Chassis; 2. Battery cavity; 3. Heat dissipation assembly; 301. Air inlet pipe; 301a. Air inlet; 302. Air outlet; 303. Passageway; 304. Insulation cavity; 306. First air outlet; 305. Second air outlet; 4. Heating assembly; 401. Exhaust duct; 402. Fan blade; 403. Connecting shaft; 404. First bevel gear; 405. Second bevel gear; 406. Half gear; 407. Tooth wall plate; 408. Friction part; 409. Heating part; 5. Fan blade assembly; 501. Fan blade; 502. Filter element; 503. Suction Water parts; 504, transmission shaft; 505, driven gear; 506, transmission chain; 507, driving gear; 6, conversion mechanism; 601, power generation device; 602, first socket end; 603, second socket end; 604, driving device; 605, connecting rod; 606, slider; 607, slide groove; 608, electric push rod; 7, power storage device; 8, temperature control mechanism; 801, rotating plate; 802, rotating rod; 803, driving rack rod; 804, moving plate; 805, first elastic reset member; 806, airbag; 807, heat conducting member. DETAILED DESCRIPTION

[0032] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art.

[0033] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner.In the following description, many specific details are provided so as to provide a full understanding of the embodiments of the present application. However, it will be appreciated by those skilled in the art that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps etc. can be adopted. In other cases, known methods, devices, implementations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0034] The present application is further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limiting the present application.

[0035] Example 1

[0036] like Figures 1 to 10 As shown, the first embodiment of the present invention provides an automobile chassis. The automobile chassis is composed of four parts: a transmission system, a running system, a steering system, and a braking system. The chassis is used to form the overall shape of the automobile, withstand the engine power, and ensure the normal driving of the automobile.

[0037] In some embodiments, as Figure 1 As shown, the vehicle chassis includes a chassis 1, within which is a battery chamber 2 for mounting a power battery and a control system. The power battery can be used to generate at least the kinetic energy required to operate the vehicle, but it can also be used to power in-vehicle components such as the instrument panel, central control panel, and air conditioning.

[0038] It should be understood that when the power battery is only used for vehicle operation and does not provide power to the vehicle or reduces the power supply to the vehicle, the cruising range of the electric vehicle can be improved.

[0039] In some embodiments, as Figures 1 to 3 As shown, the automobile chassis further includes an air inlet duct 301 communicating with the battery cavity 2 . The air inlet duct 301 is mounted on the chassis 1 and is located outside the battery cavity 2 . An air inlet 301 a of the air inlet duct 301 faces the driving direction of the automobile.

[0040] For example, the air inlet duct 301 includes an air inlet section, a connecting section, and an air outlet section. The connecting section's two ends are connected to the air inlet section and the air outlet section, respectively, forming a "U"-shaped duct. The air inlet section is connected to the bottom of the chassis 1, and the air inlet 301a is located at one end of the air inlet section away from the air outlet section. The connecting section is located within the chassis 1 and extends along the height of the chassis 1. The air outlet section is also located within the chassis 1 and extends along the length or width of the vehicle.

[0041] For example, the air inlet duct 301 can also be completely set at the bottom of the chassis 1 and extend along the length of the chassis 1. In this case, an air duct connected to the air inlet duct 301 must be set inside the chassis 1 to guide the airflow during the vehicle's driving into the battery cavity 2.

[0042] It should be understood that, by providing the air inlet pipe 301 , the airflow during the driving of the vehicle can be collected into the air inlet pipe 301 and then accurately guided into the battery cavity 2 .

[0043] In some embodiments, as Figure 7 As shown, the automobile chassis further includes a filter assembly, which is installed in the air inlet pipe 301 for blocking dust and dehumidifying.

[0044] For example, the filter assembly includes a filter element 502 , which is installed in the air inlet pipe 301 to prevent dust and other garbage from entering the battery cavity 2 through the air inlet pipe 301 .

[0045] Optionally, the filter element 502 is a filter mesh, which is installed at the air inlet 301a of the air inlet pipe 301, thereby directly blocking dust from entering the interior of the air inlet pipe 301 from the source.

[0046] For example, the filter assembly further includes a water absorbing member 503 , which is disposed in the air inlet pipe 301 . The water absorbing member 503 is closer to the air outlet 302 than the filter member 502 .

[0047] Optionally, the water absorbent member 503 is water absorbent cotton.

[0048] It should be understood that the air entering through the air inlet pipe 301 will first be filtered of dust by the filter element 502, and then when the air passes through the water absorbent element 503, the moisture in the air will be absorbed, thereby ensuring the dryness of the heat dissipating air and playing a protective role for the power battery.

[0049] In some embodiments, the battery cavity 2 also includes an opening that passes through the chassis 1 along the height direction of the chassis 1, and at least one side cavity wall arranged along the width or length direction of the chassis 1, and the side cavity wall is provided with an air outlet 302, and the air inlet pipe 301 is connected to the air outlet 302, and air is supplied to the battery cavity 2 through the air outlet 302.

[0050] The width direction of the chassis 1 is the direction in which the cross beam of the car extends, the length direction of the chassis 1 is the direction in which the longitudinal beam of the car extends, and the height direction of the chassis 1 is the direction perpendicular to the cross beam and the longitudinal beam of the car.

[0051] For example, the battery cavity 2 has four side cavity walls, which enclose a rectangular battery cavity 2, and an air outlet 302 can be set on any side cavity wall of the four side cavity walls, and multiple air outlets 302 can be set on any side cavity wall, that is, multiple air outlets 302 can be set at intervals on one side cavity wall, and then can be combined with multiple air inlet pipes 301 to increase the air volume entering the battery cavity 2, so as to better dissipate heat for the power battery in the battery cavity 2.

[0052] In addition, when the car is driving, the opening of the battery cavity 2 can also be used for ventilation to fan the power battery in the battery cavity 2. Specifically, when the car is driving, the airflow enters the opening through the bottom of the chassis 1, and then enters the battery cavity 2 to dissipate heat from the power battery.

[0053] It should be understood that the larger the opening, the better the ventilation and heating effect on the battery cavity 2 . However, the larger the opening, the worse the strength of the chassis 1 and the dust-proof effect in the battery cavity 2 .

[0054] In some embodiments, a plurality of air outlets 302 are spaced apart on a side wall along the length direction of the chassis 1 .

[0055] For example, the orthographic projection of the chassis 1 on a horizontal plane is approximately rectangular. To comprehensively consider the heat dissipation and size of the power battery, the opening in the chassis 1 can be a square with a maximum area that meets the design size requirements. In this case, the width of the chassis 1 is relatively narrow compared to the length of the vehicle. Therefore, the air outlet 302 is located on a side wall of the chassis 1 in the longitudinal direction, which facilitates the installation of the air inlet duct 301 and other structures that work in conjunction with the air outlet 302.

[0056] In summary, in this embodiment, by installing the air inlet duct 301 on the chassis 1, the air inlet 301a of the air inlet duct 301 is facing the direction of travel of the car. Therefore, it can utilize the airflow during the driving of the car to supply air into the battery cavity 2 through the air outlet 302, so as to achieve heat dissipation of the power battery in the battery cavity 2.

[0057] Secondly, the air outlet 302 is arranged on the side cavity wall of the battery cavity 2, and the air inlet pipe 301 is located outside the battery cavity 2. That is to say, while the air inlet pipe 301 supplies air into the battery cavity 2, it does not occupy the size of the opening of the battery cavity 2, so it does not affect the function of the opening for ventilation and heat dissipation, thereby increasing the overall air intake into the battery cavity 2 and improving the heat dissipation effect of the power battery.

[0058] Furthermore, a filter assembly is installed within the air inlet duct 301 to prevent dust and other debris from entering the battery chamber 2 through the air inlet duct 301. It also dehumidifies the air, removing moisture from the air and ensuring dryness during heat dissipation, thus protecting the power battery. Thus, while increasing the air volume entering the battery chamber 2, the chance of dust and other debris entering the chamber 2 is minimized.

[0059] Based on this, the vehicle chassis can reduce the opening size of the battery cavity 2 by adjusting the air intake volume of the air intake duct 301 and increasing the number of air intake ducts 301 and air inlet ports 301a. Ultimately, the opening size of the battery cavity 2 can be reduced without affecting the heat dissipation of the power battery, thereby reducing the chance of dust entering the battery cavity 2.

[0060] In some embodiments, the automobile chassis includes multiple air inlet pipes 301 installed on the chassis 1 , each air inlet pipe 301 is provided with a filter 502 and a water absorber 503 , and correspondingly, multiple air outlets 302 are connected to the air inlet pipes 301 one by one.

[0061] In addition, to avoid repetitive description, the following example is described with one air inlet pipe 301 corresponding to one air outlet 302. It should be understood that each air inlet pipe 301 is provided with the same structure, position, size and connection relationship.

[0062] In some embodiments, as Figure 6 and Figure 7 As shown, a fan blade 501 is further provided in the air inlet pipe 301. The fan blade 501 is installed in the air inlet pipe 301 and is located between the filter element 502 and the water absorbing element 503. The fan blade 501 can be driven by the air flow flowing through the air inlet pipe 301.

[0063] In addition, the vehicle chassis also includes a conversion mechanism 6 connected to the control system and controlled by the control system. The conversion mechanism 6 is in driving connection with the fan blades 501 and can convert the mechanical energy generated by the rotation of the fan blades 501 into electrical energy, which is then used to supply the electrical equipment on the vehicle.

[0064] In some embodiments, as Figure 7 and Figure 8 As shown, the conversion mechanism 6 includes a transmission assembly and a power generation assembly electrically connected to and controlled by the control system. The transmission assembly is connected to the fan blades 501 and can move synchronously with the fan blades 501. The power generation assembly is connected to the transmission assembly and driven by the transmission assembly to generate electricity for powering the electrical devices on the vehicle.

[0065] For example, the power generation component includes a power storage device 7 and a power generation device 601, both of which are connected to the control system and controlled by the control system. The power generation device 601 is connected to the transmission component and is driven by the transmission component to generate electricity; the power generation device 601 is electrically connected to the power storage device 7, and the power storage device 7 is used to store the electric energy generated by the power generation device 601, and can be electrically connected to electrical equipment on the car to supply power thereto, thereby sharing the power supply pressure of the power battery and ultimately improving the car's cruising range.

[0066] The power generation device 601 is, for example, a small generator, and the power storage device 7 is, for example, a battery. The battery is installed inside the chassis 1.

[0067] For example, the power generation assembly may also only include the power generation device 601, and the power generation device 601 is used to electrically connect with the electrical equipment that needs to work when the car is driving.

[0068] In some embodiments, the conversion mechanism 6 further includes a driving device 604 connected to the control system and controlled by the control system. The driving device 604 can remain connected to the fan blades 501 at all times, or can be connected to the fan blades 501 only when the car is stationary.

[0069] For example, when the airflow generated by the car driving is insufficient to dissipate heat to the power battery (for example, when the car is stuck in traffic), the driving device 604 can operate under the control of the car's control system to drive the fan blades 501 to rotate, thereby generating airflow to dissipate heat to the power battery.

[0070] It should be understood that the driving energy of the driving device 604 can come from the power storage device 7 or other devices.

[0071] In some embodiments, as Figure 7 and Figure 8 As shown, the conversion mechanism 6 further includes a first movable connecting member connected to the control system and controlled by the control system; the first movable connecting member is movably connected to the pipe wall of the air inlet pipe 301.

[0072] For example, the driving device 604 is electrically connected to the power storage device 7 and is driven by the power storage device 7; the driving device 604 and the power generation device 601 are both connected to the first movable connection member.

[0073] For example, the first movable connection has a power generation position and a drive position. When the first movable connection moves to the power generation position, the power generation device 601 is connected to the transmission assembly. At this time, the transmission assembly moves under the drive of the fan blades 501 and drives the power generation device 601 to generate electricity, and the electricity generated by the power generation device 601 is stored by the power storage device 7. When the first movable connection moves to the drive position, the drive device 604 is connected to the transmission assembly and is powered by the power storage device 7 to drive the transmission assembly to move. At this time, the transmission assembly drives the fan blades 501 to rotate and generates airflow to supply air to the battery cavity 2.

[0074] It should be understood that the first movable connecting member can be controlled by the control system of the vehicle so that it is located in the power generation position when the vehicle is driving, and is located in the driving position when the vehicle is stationary or in a traffic jam.

[0075] In some embodiments, as Figure 6 、 Figure 7 and Figure 8 As shown, the air inlet duct 301 is further provided with a plurality of blades 501; the transmission assembly includes a transmission chain 506, a drive gear 507, and a plurality of driven gears 505. The blades 501 are respectively connected to the driven gears 505 in a one-to-one transmission manner; each driven gear 505 is meshed with the transmission chain 506; the drive gear 507 is connected to the transmission chain 506, and the drive gear 507 is provided with a first socket end 602 and a second socket end 603 on either side. The first socket end 602 is used to connect to the input end of the power generation device 601; the second socket end 603 is used to connect to the output port of the drive device 604.

[0076] It should be understood that a transmission shaft 504 extending inwardly along the axial direction of the fan blade 501 is fixed to the end surface thereof. The outer wall of the transmission shaft 504 is fixedly connected to the driven gear 505, and the outer side of the driven gear 505 is meshed with the transmission chain 506. The driving gear 507 is mounted on the inner side of the transmission chain 506 and is close to one end of the inner wall of the air inlet pipe 301. The plurality of fan blades 501, the filter element 502, the water absorbing element 503, the transmission shaft 504, the driven gear 505, the transmission chain 506, the driving gear 507, and the plurality of driven gears 505 together form a fan blade assembly 5. At least one fan blade assembly 5 is provided in each air inlet pipe 301.

[0077] When the air enters the air inlet pipe 301, the dust is first filtered by the filter element 502, and then the air flow drives the fan blades 501 to rotate and pass through the fan blades 501; when the air flow passes through the water absorbent element 503, the moisture in the air flow will be absorbed, thereby ensuring the dryness of the heat dissipation air flow and protecting the battery; and the rotating fan blades 501 will drive the transmission chain 506 to rotate, and the transmission chain 506 will in turn drive the drive gear 507 to rotate, and the drive gear 507 cooperates with the power generation device 601 to convert mechanical energy into electrical energy, which is stored in the power storage device 7.

[0078] In some embodiments, a sliding groove 607 is formed on the inner wall of the air inlet pipe 301; the first movable connecting member includes a slider 606, an electric push rod 608 and a connecting rod 605; wherein the slider 606 is installed in the sliding groove 607 and can slide along the groove wall of the sliding groove 607;

[0079] like Figure 8 As shown, the electric push rod 608 is connected to the slider 606, the electric push rod 608 is electrically connected to the power storage device 7, and is powered and driven by the power storage device 7; the two ends of the connecting rod 605 are respectively connected to the power generation device 601 and the driving device 604 one by one, and the connecting rod 605 is connected to the slider 606 and can move synchronously with the slider 606.

[0080] For example, the connecting rod 605 is in a U-shaped structure, with both ends of the connecting rod 605 connected to the outer walls of the driving device 604 and the power generation device 601, respectively. The outer wall of the connecting rod 605 is connected to the slider 606, and the bottom end of the slider 606 is located on the inner wall of the slide 607 and connected to the electric push rod 608. The electric push rod 608 can be electrically connected to the control system and the battery.

[0081] It should be understood that when the car is in a normal driving state, the driving gear 507 is in a state of being connected to the input end of the power generation device 601, thereby converting the mechanical energy of the fan blade 501 into electrical energy stored in the power storage device 7.

[0082] When the car is in a traffic jam, there is no wind energy input for heat dissipation, and the control system also monitors that the temperature inside the battery cavity 2 is in a slowly rising state. Therefore, the control system will control the storage device 7 through the single-chip microcomputer to power the drive device 604 and the electric push rod 608. At the same time, under the action of the control system, the drive gear 507 will be disconnected from the power generation device 601 through the electric push rod 608, and instead connected to the output port of the drive device 604, so that the drive device 604 drives the drive gear 507 to rotate. The rotation of the drive gear 507 will drive the transmission chain 506 to rotate. After the transmission chain 506 rotates, it drives the multiple fan blades 501 to rotate. After the multiple fan blades 501 rotate, airflow is generated into the battery cavity 2 to heat the power battery, thereby preventing the power battery from being at a high temperature and unable to dissipate heat during traffic jams, resulting in damage to the power battery.

[0083] When the car returns to normal driving state, the control system will cut off the power to the drive device 604, so that the electric push rod 608 pushes the slider 606 to reset, thereby reconnecting the drive gear 507 to the generator 601 for subsequent use.

[0084] In some embodiments, as Figure 3 and Figure 4 As shown, the chassis 1 also includes a heat preservation chamber 304, which is spaced apart from the battery chamber 2 and communicates with the battery chamber 2 via an exhaust duct 401. The heat preservation chamber 304 is provided with a first exhaust port 306 and a second exhaust port 305, each of which is equipped with a control valve to control its opening and closing. The heat preservation chamber 304 communicates with the vehicle's air conditioning duct via the first exhaust port 306; the heat preservation chamber 304 discharges its internal airflow to a portion outside the battery chamber 2 and the vehicle's air conditioning duct via the second exhaust port 305.

[0085] For example, the control valve is an electrically controlled valve that can be switched on and off by the control system of the vehicle.

[0086] It should be understood that when outside air enters the battery chamber 2 through the air inlet duct 301 and the air outlet 302, the temperature inside the battery chamber 2 is reduced. Furthermore, the high-temperature gas enters the heat-insulating chamber 304 through the channel opening 303 of the exhaust duct 401 and is stored for subsequent use. For example, by opening the control valve of the first exhaust vent 306, so that the heat-insulating chamber 304 is connected to the vehicle's air conditioning duct through the first exhaust vent 306, the high-temperature gas can be discharged into the cab through the vehicle's air conditioning duct and the air conditioning exhaust vent, thereby providing heating and maximizing resource utilization. In summer, the control valve of the second exhaust vent 305 can be kept open to allow all gas to be discharged.

[0087] In some embodiments, as Figure 3 and Figure 4 As shown, the vehicle chassis further includes a heating assembly 4, which is disposed in an exhaust duct 401 and is used to heat the airflow passing through the exhaust duct 401. The exhaust duct 401 and the air inlet 302 are disposed on two side walls of the battery cavity, opposite to each other. Similarly, the exhaust duct 401 can be a plurality of independent exhaust ducts 401 spaced apart on the side walls, and each exhaust duct 401 is provided with a heating assembly 4.

[0088] It should be understood that by providing the heating component 4 in the exhaust passage 401, the gas flowing through the exhaust passage 401 can be heated to provide heating in winter, thereby saving electricity and improving the vehicle's cruising range.

[0089] In some embodiments, as Figure 3 and Figure 4 As shown, the heating component 4 includes: fan blades 402, a third movable connecting member, a friction member and a heating member, wherein the fan blades 402 are located in the heat preservation chamber 304, and the fan blades 402 are arranged relative to the vent of the exhaust channel 401; the third movable connecting member is connected to the fan blades 402 and can move with the fan blades 402; the friction member and the heating member are located in the exhaust channel 401, the heating member is connected in the exhaust channel 401, the friction member is transmission-connected to the third movable connecting member, and the friction member is in contact with the heating member; wherein the friction member can generate heat by friction with the heating member under the drive of the third movable connecting member.

[0090] For example, the heating element may cover the entire interior of the exhaust passage 401 .

[0091] It should be understood that after the gas passes through the exhaust duct 401 and enters the heat-insulating chamber 304, it drives the fan blades 402 to rotate. The rotation of the fan blades 402 can drive the third movable connection member to move, and the third movable connection member drives the friction member to move. As long as the fan blades 402 are rotating, the friction member will continue to move, and then continuously rub against the heat-generating element inside the exhaust duct 401 to generate heat.

[0092] In some embodiments, as Figure 3 、 Figure 4 and Figure 5 As shown, the third movable connection member includes a gear set; the gear set includes a first bevel gear 405, a second bevel gear 406 and a half gear 406, the first bevel gear 405 is transmission-connected to the fan blade 402, the first bevel gear 405 is meshed with the second bevel gear 406, and the half gear 406 is coaxially connected to the second bevel gear 406; the heating assembly 4 also includes a second elastic return member, one end of the second elastic return member is connected to the friction member, and the other end of the second elastic return member is connected to the inner wall of the exhaust channel 401;

[0093] For example, along the radial direction of the half gear 406 , the half gear 406 includes four arcs of equal length, and only two of the four arcs disposed at intervals are provided with a plurality of gear teeth.

[0094] For example, the first bevel gear 405 and the second bevel gear 406 are also called bevel gears, and the movement direction of the first bevel gear 405 intersects with the movement direction of the second bevel gear 406 .

[0095] It should be understood that the friction member has a forward position and a rearward position; when the friction member is in the forward position, the friction member is engaged with the half gear 406, and the friction member is driven to move toward the rearward position through the half gear 406, and the second elastic return member is elastically deformed; when the friction member is in the rearward position, the friction member is separated from the gear teeth of the half gear 406, and the second elastic return member restores the elastic deformation to drive the friction member to move toward the forward position until the friction member is engaged with the half gear 406.

[0096] In some embodiments, as Figure 3 and Figure 4 As shown, the friction member includes a friction portion 408 and a tooth wall plate 407. The tooth wall plate 407 is provided with gear teeth for meshing with the half gear 406.

[0097] For example, the end face of the fan blade 402 is fixedly connected to the connecting shaft 403 through a coupling, and one end of the connecting shaft 403 is fixedly connected to the first bevel gear 404, the end face of the first bevel gear 404 is meshed with the second bevel gear, and the end face of the second bevel gear 405 is fixedly connected to the half gear 406 through the synchronization shaft, the bottom end of the half gear 406 is meshed with the tooth wall plate 407, and the bottom end of the tooth wall plate 407 is fixedly connected to the friction part 408, the outer walls of the tooth wall plate 407 and the friction part 408 are connected to the second elastic reset part (telescopic spring) installed on the outer wall of the battery cavity 2, the heating part 409 is located below the friction part 408 and on the inner wall of the exhaust channel 401, and the heating part 409 is in contact with the bottom end face of the friction part 408.

[0098] It should be understood that when the gas passes through the exhaust channel 401, the fan blades 402 will be driven to rotate when the gas enters the insulation chamber 304. After the fan blades 402 rotate, they will drive the first bevel gear 404 to rotate through the connecting shaft 403. After the first bevel gear 404 rotates, it drives the second bevel gear 405 to rotate through the meshing action. After the second bevel gear 405 rotates, it drives the half gear 406 to rotate through the synchronous shaft. When the teeth of the half gear 406 rotate to engage with the top of the tooth wall plate 407, it will drive the tooth wall plate 407 to move and squeeze the second elastic reset member. At this time, the tooth wall plate 407 will drive the friction part 408 to move on the end face of the heating part 409. When the teeth of the half gear 406 rotate to no longer engage with the top of the tooth wall plate 407, the second elastic reset member will push the tooth wall plate 407 and the friction part 408 to reset, and the cycle will repeat, so that the friction part 408 and the heating part 409 rub to generate heat.

[0099] Therefore, the gas passing through the exhaust channel 401 can take away the heat of the heating part 409 to achieve heating of the gas. If it is summer, the control valve that controls the opening and closing of the second exhaust port 305 is always open to allow all the gas to be discharged; if it is winter, the control valve that controls the opening and closing of the first exhaust port 306 is opened to allow the air flow to be discharged into the cab through the exhaust pipe of the air conditioner, thereby providing heating and maximizing the use of resources.

[0100] It should be understood that the air inlet pipe 301 (including its internal structure), the air outlet 302 , the exhaust channel 401 , the heat preservation chamber 304 , the first air outlet 306 , and the second air outlet 305 together form the heat dissipation component 3 .

[0101] In some embodiments, as Figure 9 and Figure 10 As shown, the vehicle chassis also includes a temperature control mechanism 8. This mechanism is mounted on the inner wall of the chassis 1 and located inside the air outlet 302. The mechanism 8 comprises an elastic component and a cover. The elastic component is mounted on the chassis 1 and deforms in response to temperature changes within the battery cavity 2. The cover is connected to the elastic component. One movable end of the cover is connected to the chassis 1, while the other end is located inside the air outlet 302.

[0102] It should be understood that the cover has an initial position for closing the air outlet 302 and an open position for opening the air outlet 302 .

[0103] When the temperature inside the battery cavity 2 is lower than or equal to the first preset value, the elastic component does not deform and the cover is in the initial position; when the temperature inside the battery cavity 2 gradually exceeds the first preset value, the elastic component gradually deforms and drives the cover to move gradually from the initial position toward the open position until the cover is in the open position.

[0104] Among them, when the car is just started, the temperature inside the battery cavity 2 is low, that is, lower than the first preset value. The elastic component cannot receive enough heat to deform, and cannot drive the cover member to move, and ultimately cannot drive the cover member to move from the initial position to the open position; therefore, the air outlet 302 is in a closed state. At this time, the outside air cannot enter the battery cavity 2 on a large scale, thereby playing a role in low-temperature protection of the power battery and accelerating the speed at which the power battery enters the optimal temperature.

[0105] When the temperature inside the battery chamber 2 exceeds a first preset value, the elastic component receives sufficient heat to deform, causing the cover to move, forcing it to move from its initial position toward the open position until the cover is in the open position as the temperature inside the battery chamber 2 gradually rises. At this point, the air outlet 302 opens, allowing a large amount of outside air to enter the battery chamber 2 for heat dissipation. Furthermore, the temperature inside the battery chamber 2 controls the degree of deformation of the elastic component, meaning that the opening and closing of the cover can be adjusted in real time by the temperature inside the battery chamber 2.

[0106] In some embodiments, as Figure 9 and Figure 10 As shown, the temperature control mechanism 8 also includes a heat conductor 807, which is at least partially located in the battery cavity 2. The heat conductor 807 is connected to the side cavity wall of the chassis 1, and the elastic component is in contact with the heat conductor 807. The heat in the battery cavity 2 is transferred to the elastic component through the heat conductor 807, and the elastic component forms or recovers deformation according to the amount of heat.

[0107] For example, the heat conducting member 807 is a heat conducting plate, which may be a part of the side wall of the battery cavity 2 .

[0108] It should be understood that, by disposing the heat conducting member 807 , the temperature can be transferred to the elastic component more accurately.

[0109] In some embodiments, as Figure 9 and Figure 10 As shown, the elastic component includes an airbag 806 and a first elastic return member 805; wherein, the airbag 806 is located between the heat-conducting member 807 and the cover member, the airbag 806 is in contact with the heat-conducting member 807, and is inflated by the heat transferred by the heat-conducting member 807; one end of the first elastic return member 805 is connected to the cover member, and the other end of the first elastic return member 805 is connected to the inner wall of the chassis 1, and the first elastic return member 805 is used to switch the cover member between the initial position and the open position.

[0110] It should be understood that, in the process of the temperature in the battery cavity 2 gradually increasing from the first preset value, the volume of the airbag 806 gradually becomes larger than the second preset value, the cover member gradually moves from the initial position to the open position, and drives the first elastic return member 805 to undergo elastic deformation until the cover member is in the open position; in the process of the temperature in the battery cavity 2 gradually recovering from higher than the first preset value to equal to the first preset value, the volume of the airbag 806 gradually recovers from greater than the second preset value to equal to the second preset value, the first elastic return member 805 gradually recovers the elastic deformation, and drives the cover member to gradually move from the open position to the initial position.

[0111] In some embodiments, as Figure 9 and Figure 10 As shown, the covering member includes a rotating plate 801 installed inside the air outlet 302, and the outer wall of the rotating plate 801 is fixedly connected to a rotating rod 802 extending to the inside of the chassis 1, the rotating rod 802 is rotatably connected to the inner wall of the chassis 1 through a bearing, and the outer wall of the rotating rod 802 is provided with a driven tooth wall, the outer side of the driven tooth wall is meshedly connected to the driving rack rod 803, and the top of the driving rack rod 803 is fixedly connected to a movable plate 804, the movable plate 804 is slidably connected to the inner wall of the chassis 1, and one side of the movable plate 804 is connected to a first elastic return member 805 (such as a spring) installed on the inner wall of the chassis 1, and the other side of the movable plate 804 is provided with an airbag 806, and the interior of the airbag 806 is filled with gas, the initial volume value of the gas is less than the second preset value, and one side of the airbag 806 is provided with a heat conductor 807 at the end of the outer wall of the chassis 1, and the inner end face of the heat conductor 807 is fixed to the outer wall end face of the airbag 806.

[0112] It should be understood that when the car is just started, the temperature inside the battery cavity 2 is low, and the heat conductor 807 cannot transfer enough heat to the airbag 806, resulting in the airbag 806 being unable to expand, and thus unable to drive the drive rack rod 803 to move, that is, the rotating plate 801 cannot be opened. At this time, outside air cannot enter the battery cavity 2 on a large scale, which has the effect of protecting the power battery from low temperatures and speeding up the battery to reach the optimal temperature.

[0113] When the temperature inside the battery cavity 2 rises, its heat will be transferred to the surrounding air, and the heat in the air will be absorbed by the heat conductor 807. At this time, the heat of the heat conductor 807 will be transferred to the airbag 806, causing the airbag 806 to expand until the volume is greater than or equal to the second preset value, thereby driving the driving rack rod 803 to move. The movement of the driving rack rod 803 will drive the driven gear wall to rotate, realizing the rotation of the rotating rod 802, and finally realizing the opening of the rotating plate 801, so that the flowing air can enter the battery cavity 2 to dissipate heat for the power battery.

[0114] Example 2

[0115] The second embodiment of the present invention provides an electric vehicle, comprising a vehicle cabin and the vehicle chassis of the first embodiment, wherein the vehicle cabin is connected to the vehicle chassis.

[0116] For example, the electric vehicle is a car, a tractor or a dump truck.

[0117] In this application, unless otherwise specified or limited, terms such as "assembly" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0118] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0119] In the description of this specification, the reference terms "some embodiments", "exemplarily", etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0120] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. Therefore, any changes or modifications made in accordance with the claims and description of the present application should fall within the scope of the patent covered by this application.

Claims

1. An automobile chassis, characterized in that: include: A chassis, wherein a battery cavity is provided in the chassis and is used to install a power battery; an air inlet duct, the air inlet duct being mounted on the chassis and located outside the battery cavity, with an air inlet of the air inlet duct facing the direction of travel of the vehicle; A filter assembly is installed in the air inlet duct to block dust and remove moisture; The battery cavity further includes an opening extending through the chassis in a height direction thereof, and at least one side cavity wall provided along a width or length direction thereof, the side cavity wall being provided with an air outlet, the air inlet pipe being in communication with the air outlet and supplying air into the battery cavity through the air outlet; wherein a fan blade is further provided in the air inlet pipe, the fan blade being installed in the air inlet pipe and being capable of being driven by the airflow flowing through the air inlet pipe; The automobile chassis also includes a conversion mechanism connected to a control system, the conversion mechanism is controlled by the control system, and the conversion mechanism is connected to the fan blades to convert the mechanical energy generated when the fan blades rotate into electrical energy.

2. The automobile chassis according to claim 1, characterized in that: The conversion mechanism includes a transmission component and a power generation component electrically connected to the control system; wherein, The transmission assembly is connected to the fan blade, and the transmission assembly and the fan blade move synchronously; The power generation component is connected to the transmission component and is driven by the transmission component to generate electricity for supplying power to the electrical equipment of the vehicle.

3. The automobile chassis according to claim 2, characterized in that: The power generation assembly includes a power storage device and a power generation device connected to the control system; The power generation device is connected to the transmission assembly and is driven by the transmission assembly to generate electricity; The power generation device is electrically connected to the power storage device, and the power storage device is used to store the electric energy generated by the power generation device and to supply power to the electrical equipment of the vehicle.

4. The automobile chassis according to claim 3, characterized in that: The conversion mechanism further includes a first movable connection member electrically connected to the control system and a driving device; the first movable connection member is movably connected to the wall of the air inlet duct; the driving device is electrically connected to the power storage device and is driven by the power storage device; The driving device and the power generation device are both connected to the first movable connecting member, and the first movable connecting member has a power generation position and a driving position; wherein, When the first movable connection member moves to the power generation position, the power generation device is connected to the transmission assembly. At this time, the transmission assembly moves under the drive of the wind blade and drives the power generation device to generate electricity; When the first movable connecting member moves to the driving position, the driving device is connected to the transmission assembly and is powered by the power storage device to drive the transmission assembly to move. At this time, the transmission assembly drives the fan blades to rotate and generates airflow to supply air to the battery cavity.

5. The automobile chassis according to claim 4, characterized in that: The air inlet pipe is further provided with a plurality of blades; the transmission assembly includes a transmission chain, a driving gear and a plurality of driven gears; wherein, The fan blades are respectively connected to the driven gears in a one-to-one transmission manner; Each of the driven gears is meshed and connected with the transmission chain; The driving gear is in transmission connection with the transmission chain, and a first socket end and a second socket end are respectively provided on both sides of the driving gear. The first socket end is used to connect with the input end of the power generation device; the second socket end is used to connect with the output port of the driving device.

6. The automobile chassis according to claim 1, characterized in that: The automobile chassis further includes a heat-conducting member, an elastic component, and a cover member. The heat-conducting member is connected to the side cavity wall and is at least partially located in the battery cavity for transferring heat in the battery cavity to the elastic component. The elastic component is installed between the inner wall of the chassis and the heat-conducting member and deforms due to temperature changes in the battery cavity. The cover member is connected to the elastic component, one movable end of the cover member is connected to the chassis, and the other end of the cover member is located in the air outlet. The cover member has an initial position for closing the air outlet and an open position for opening the air outlet; When the temperature in the battery cavity is lower than or equal to a first preset value, the elastic component does not deform, and the cover member is in the initial position; When the temperature in the battery cavity gradually becomes higher than the first preset value, the elastic component gradually deforms and drives the cover member to gradually move from the initial position toward the open position until the cover member is located at the open position.

7. The automobile chassis according to claim 6, characterized in that: The elastic component includes an airbag and a first elastic return member. The airbag is located between the heat-conducting member and the cover member. The airbag is in contact with the heat-conducting member and is expanded by the heat transferred by the heat-conducting member. One end of the first elastic return member is connected to the cover member, and the other end of the first elastic return member is connected to the inner wall of the chassis. As the temperature in the battery cavity gradually increases from the first preset value, the volume of the airbag gradually becomes larger than a second preset value, the cover member gradually moves from the initial position to the open position, and drives the first elastic return member to elastically deform until the cover member is located in the open position; During the process of the temperature in the battery cavity gradually recovering from higher than the first preset value to equal to the first preset value, the volume of the airbag gradually recovers from greater than the second preset value to equal to the second preset value, the first elastic return member gradually recovers its elastic deformation, and drives the cover member to gradually move from the open position to the initial position.

8. The automobile chassis according to claim 1, characterized in that: The chassis is further provided with a heat preservation chamber, which is spaced apart from the battery chamber and communicates with the battery chamber via an exhaust passage; the heat preservation chamber is provided with a first exhaust port and a second exhaust port, and the first exhaust port and the second exhaust port are both provided with a control valve for controlling their opening and closing; wherein, A heating component is further provided in the heat preservation cavity, and the heating component is provided in the exhaust passage, and the heating component is used to heat the airflow passing through the exhaust passage, and connect the airflow to the automobile air conditioning duct through the first exhaust port; The heat preservation cavity can discharge the airflow therein to the battery cavity and the portion outside the automobile air conditioning duct through the second air outlet.

9. The automobile chassis according to claim 8, characterized in that: The heating assembly includes: fan blades, a third movable connecting member, a friction member and a heating member, wherein: The fan blade is located in the heat preservation cavity, and the fan blade is arranged relative to the vent of the exhaust channel; The third movable connecting member is connected to the fan blade and can move along with the fan blade; The friction member and the heating member are located in the exhaust passage, the heating member is connected to the exhaust passage, the friction member is in transmission connection with the third movable connecting member, and the friction member is in contact with the heating member; The friction member can generate heat by friction with the heat generating member under the drive of the third movable connecting member.

10. An electric vehicle, characterized in that: The vehicle comprises a vehicle cabin and the vehicle chassis according to any one of claims 1 to 9, wherein the vehicle cabin is connected to the vehicle chassis.

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