Frame chassis and vehicle

Abstract

The present invention relates to a frame chassis and a vehicle, which comprises: two frame longitudinal beams arranged in parallel; a battery box, wherein the battery box is arranged at the bottom of the frame longitudinal beams, and two parallel grooves are opened on the top of the battery box in the length direction of the frame longitudinal beams, and the two grooves are respectively used to accommodate a frame longitudinal beam, and the battery box is at least partially located between the inner sides of the two frame longitudinal beams, and at least partially located on the outer sides of the two frame longitudinal beams; a connecting mechanism, wherein the connecting mechanism fixes the frame longitudinal beam to the battery box. The present invention improves the space utilization rate below the frame chassis, thereby providing all the space above the frame chassis as a cargo loading area, increasing the cargo capacity of the whole vehicle; at the same time, it can reduce the center of gravity of the whole vehicle, which is beneficial to improving the stability of the whole vehicle's control and the safety of the whole vehicle; it also increases the number of battery modules installed in the battery box, thereby increasing the overall power, which is beneficial to meeting the long-range requirements.

Description

Technical Field

[0001] The present invention relates to the field of vehicle engineering, and in particular to a frame chassis and a vehicle. Background Art

[0002] Energy saving, environmental protection and safety have always been the main themes of automobile development, and electrification, intelligence, networking and sharing are the means to achieve them. However, due to the short driving range of electric vehicles and the small number of charging piles, this has affected the promotion and application of electric vehicles to a certain extent.

[0003] In the relevant technology, most of the frame longitudinal beams of pure electric heavy-duty trucks on the market are installed in two ways. On the one hand, the rear frame longitudinal beam is arranged above the frame longitudinal beam as a whole, which causes the center of gravity of the whole vehicle to be too high, which has an adverse effect on the handling stability of the whole vehicle; the rear frame longitudinal beam is arranged above the frame longitudinal beam, and the front and rear dimensions of the main body are about 900mm, which squeezes the loading space of the whole vehicle and reduces the transportation efficiency of the whole vehicle; on the other hand, the left and right side frame longitudinal beams are distributed on both sides of the frame longitudinal beam, the wiring is scattered, and the overall battery space is limited by the wheelbase of the whole vehicle. Generally, the power is low, and it is difficult to meet the long-range requirements. Summary of the invention

[0004] The embodiments of the present invention provide a frame chassis and a vehicle to solve the problems in the related art that the rear battery box is arranged as a whole above the frame, resulting in a high center of gravity of the whole vehicle, which has an adverse effect on the handling stability of the whole vehicle, and the battery boxes are distributed on both sides of the frame, the wiring is dispersed, and the overall battery space is limited by the wheelbase of the whole vehicle, the power is generally low, and it is difficult to meet the long-range demand.

[0005] In a first aspect, an embodiment of the present invention provides a frame chassis, which includes: two parallel frame beams; a battery box, wherein the battery box is arranged at the bottom of the frame beams, and two parallel grooves are provided on the top of the battery box in the length direction of the frame beams, and the two grooves are respectively used to accommodate a frame beam, and the battery box is at least partially located between the inner sides of the two frame beams and at least partially located on the outer sides of the two frame beams; a connecting mechanism, which fixes the frame beams and the battery box.

[0006] The beneficial effect of adopting the above technical solution is that the volume of the battery box is constrained at the bottom of the frame chassis, and at the inner side of the two frame longitudinal beams and the outer side of the two frame longitudinal beams, thereby improving the space utilization rate below the frame chassis, so that all the space above the frame chassis is provided as a cargo loading area, thereby increasing the cargo volume of the whole vehicle and improving the loading and transportation efficiency of the vehicle; at the same time, constraining the battery box at the bottom of the frame chassis can lower the center of gravity of the whole vehicle, which is beneficial to improving the stability of the vehicle's handling and the safety of the whole vehicle; secondly, it also increases the number of battery modules installed in the battery box, thereby increasing the overall power, which is beneficial to meeting the long-range requirements; thirdly, it reduces the space occupied by the battery box in the length direction of the whole vehicle, which is beneficial to controlling the wheelbase of the whole vehicle and reducing the turning radius of the vehicle.

[0007] In some embodiments, the top surface of the battery box is not higher than the top surface of the frame rail.

[0008] The beneficial effect of adopting the above-mentioned further technical solution is that the battery box does not exceed the frame chassis in height direction, and all the space above the frame chassis is provided for cargo loading, which is beneficial to increase the cargo volume of the whole vehicle and further improve the loading and transportation efficiency of the vehicle.

[0009] In some embodiments, the number of the connecting mechanisms is at least two, the two connecting mechanisms correspond one-to-one to the two grooves of the battery box and are located in the corresponding grooves, and each of the connecting mechanisms includes: a mounting seat, the mounting seat is fixed in the groove of the battery box; a mounting ear plate, the mounting ear plate is fixed to the frame longitudinal beam in the groove; and a pin shaft, the pin shaft passes through the mounting seat and the mounting ear plate in sequence to fix the battery box on the two frame longitudinal beams.

[0010] The beneficial effect of adopting the above-mentioned further technical solution is that the connecting mechanism is arranged in the two grooves of the battery box, which can further fully utilize the space in the frame chassis, further increase the battery capacity of the battery box, and reduce the space occupancy rate of the connecting mechanism.

[0011] In some embodiments, the upper half of the cross section of the pin shaft is trapezoidal.

[0012] The beneficial effect of adopting the above-mentioned further technical solution is that the three planes of the pin shaft are all subjected to the force of the battery box weight, which solves the problem of stress concentration on the same axis of the traditional circular pin shaft.

[0013] In some embodiments, the connecting mechanism includes: a cross bar; two connecting brackets, the two connecting brackets correspond one-to-one to the opposite ends of the cross bar and are fixed on the corresponding end of the cross bar, and the other ends of the two connecting brackets are fixed to one of the frame longitudinal beams, so that the connecting brackets and the cross bar form a receiving space for receiving the battery box.

[0014] The beneficial effect of adopting the above-mentioned further technical solution is that a receiving space is formed by using a cross bar and two connecting brackets to install the battery box, so that the battery box can be firmly fixed on the two frame longitudinal beams, and its structure is simple and the design is reasonable.

[0015] In some embodiments, each of the connecting brackets is L-shaped, and the vertical section and the bent section of each of the connecting brackets are detachably connected.

[0016] The beneficial effect of adopting the above-mentioned further technical solution is that the connecting bracket can be assembled with two rods, so that when the connecting mechanism faces battery boxes of different sizes, it only needs to replace its vertical section or bending section accordingly to meet the changes in the height or width of the battery box.

[0017] In some embodiments, the cross bar and the two connecting brackets form a set of fixed components one. In the length direction of the frame longitudinal beam, the connecting mechanism includes multiple groups of fixed components one arranged at intervals, and multiple longitudinal bars arranged at intervals are fixed between the multiple groups of fixed components one.

[0018] The beneficial effect of adopting the above-mentioned further technical solution is that the connecting mechanism includes multiple groups of fixing components, which can improve the firmness of the battery box during installation. At the same time, multiple longitudinal rods are fixed to the multiple groups of fixing components, making the connection between the multiple groups of fixing components more firm, thereby ensuring the reliability of the connecting mechanism.

[0019] In some embodiments, two frame cross beams are fixedly arranged between the frame longitudinal beams, and the battery box is at least partially located between the two frame cross beams; the connecting mechanism includes: two connecting frames, which are spaced apart on opposite sides of the battery box in the length direction of the frame longitudinal beams, and one end of the two connecting frames is respectively fixed to one of the cross bars, and the other end thereof is respectively fixed to one of the frame cross beams.

[0020] The beneficial effect of adopting the above-mentioned further technical solution is that the bent section of the connecting frame is fixed to the bottom of the cross bar, and its vertical section is fixed to the bottom of the frame crossbeam, so that the connecting mechanism is also connected and installed between the frame crossbeam, thereby further improving the stability of the battery box installation.

[0021] In some embodiments, the two connecting skeletons form a group of fixed components 2. In the length direction of the frame crossbeam, the connecting mechanism includes multiple groups of fixed components 2 arranged at intervals, and a connecting rod is fixed between any two adjacent groups of fixed components 2.

[0022] The beneficial effect of adopting the above further technical solution is that two adjacent connection frames are connected by a connecting rod, thereby improving the stability of the support connection between the two connection frames.

[0023] In a second aspect, an embodiment of the present invention provides a vehicle, comprising the frame chassis as described above.

[0024] The beneficial effect of adopting the above technical solution is to improve the space utilization rate under the frame chassis of the vehicle, so that all the space above the frame chassis is provided as the cargo loading area, thereby increasing the cargo volume of the whole vehicle and improving the loading and transportation efficiency of the vehicle; at the same time, constraining the battery box at the bottom of the frame chassis can lower the center of gravity of the whole vehicle, which is beneficial to improve the stability of the whole vehicle's control and the safety of the whole vehicle; secondly, it also increases the number of battery modules installed in the battery box, thereby increasing the overall power, which is beneficial to meet the long-range requirements; thirdly, it reduces the space occupied by the battery box in the length direction of the whole vehicle, which is beneficial to control the wheelbase of the whole vehicle and reduce the turning radius of the vehicle.

[0025] The beneficial effects brought about by the technical solution provided by the present invention include: constraining the volume of the battery box to the bottom of the frame chassis, and to the inner side of the two frame longitudinal beams and the outer side of the two frame longitudinal beams, thereby improving the space utilization rate below the frame chassis, so that all the space above the frame chassis is provided as a cargo loading area, thereby increasing the cargo volume of the whole vehicle and improving the loading and transportation efficiency of the vehicle; at the same time, constraining the battery box to the bottom of the frame chassis can lower the center of gravity of the whole vehicle, which is beneficial to improving the stability of the whole vehicle's control and the safety of the whole vehicle; secondly, it also increases the number of battery modules installed in the battery box, thereby increasing the overall power, which is beneficial to meeting the long-range requirements; thirdly, reducing the space occupied by the battery box in the length direction of the whole vehicle, which is beneficial to controlling the wheelbase of the whole vehicle and reducing the turning radius of the vehicle; finally, the connection structure can realize fast and convenient battery replacement operations on the battery box. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 A schematic diagram of the three-dimensional structure of a first electric truck provided by an embodiment of the present invention;

[0028] Figure 2 for Figure 1 A schematic diagram of a top view structure;

[0029] Figure 3 for Figure 2 A schematic diagram of a top view of the structure of the connection mechanism and the frame longitudinal beam assembly;

[0030] Figure 4A schematic diagram of a three-dimensional structure of an assembly of a mounting base and a mounting ear plate provided in an embodiment of the present invention;

[0031] Figure 5 A front view structural schematic diagram of the assembly of the mounting seat and the mounting ear plate provided in an embodiment of the present invention;

[0032] Figure 6 A schematic diagram of a top view of a second electric truck provided by an embodiment of the present invention;

[0033] Figure 7 A schematic diagram of a top view of a third electric truck provided in an embodiment of the present invention;

[0034] Figure 8 for Figure 7 A schematic diagram of the three-dimensional structure of the connecting mechanism and the frame chassis assembly;

[0035] Fig. 9 A schematic diagram of a top view of a fourth electric truck provided by an embodiment of the present invention;

[0036] Fig.10 A schematic diagram of the internal structure of a battery box provided in an embodiment of the present invention.

[0037] In the figure: 1. chassis; 11. longitudinal beam of the frame; 12. cross beam of the frame; 2. battery box; 3. connecting mechanism; 31. mounting seat; 32. mounting ear plate; 33. pin shaft; 34. cross bar; 35. connecting bracket; 36. longitudinal bar; 37. connecting frame; 38. connecting rod; 4. parts under the cab; 5. electric drive system; 6. internal parts of the battery system; 61. battery module; 62. charging interface. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] The embodiments of the present invention provide a frame chassis and a vehicle to solve the problems in the related art that the rear battery box is arranged as a whole above the frame, resulting in a high center of gravity of the whole vehicle, which has an adverse effect on the handling stability of the whole vehicle, and the battery boxes are distributed on both sides of the frame, the wiring is dispersed, and the overall battery space is limited by the wheelbase of the whole vehicle, the power is generally low, and it is difficult to meet the long-range demand.

[0040] like Figure 1 and 2As shown, an embodiment of the present invention provides a frame chassis, which may include: two frame longitudinal beams 11 arranged in parallel; a battery box 2, wherein the battery box 2 is arranged at the bottom of the frame longitudinal beam 11, and two parallel grooves are opened on the top of the battery box 2 in the length direction of the frame longitudinal beam 11, and the two grooves are respectively used to accommodate one frame longitudinal beam 11 (that is, the grooves are arranged in a one-to-one correspondence with the frame longitudinal beam 11, and each frame longitudinal beam 11 is at least partially accommodated in the corresponding groove), so that the battery box 2 is at least partially located below the frame longitudinal beam 11, and the space below the frame longitudinal beam 11 is fully utilized; The battery box 2 is at least partially located between the inner sides of the two frame longitudinal beams 11, and at least partially located on the outer sides of the two frame longitudinal beams 11; the outer sides here should be understood as the left and right sides of the two frame longitudinal beams 11, that is, the left side of the frame longitudinal beam 11 on the left side of the vehicle is partially provided with the battery box 2, or the right side of the frame longitudinal beam 11 on the right side of the vehicle is partially provided with the battery box 2, or the left side of the left frame longitudinal beam 11 and the right side of the right frame longitudinal beam 11 are partially provided with the battery box 2; the connecting mechanism 3 fixes the frame longitudinal beam 11 and the battery box 2. Among them, the battery box 2 has sealing and waterproof functions.

[0041] Specifically, the volume of the battery box 2 is constrained at the bottom of the frame chassis 1, and at the inner side of the two frame longitudinal beams 11 and the outer side of the two frame longitudinal beams 11, so as to improve the space utilization rate below the frame chassis 1, so that the space above the frame chassis 1 is completely provided as a cargo loading area, thereby increasing the cargo volume of the whole vehicle and improving the loading and transportation efficiency of the vehicle; at the same time, constraining the battery box 2 at the bottom of the frame chassis 1 can lower the center of gravity of the whole vehicle, which is beneficial to improving the stability of the whole vehicle's control and the safety of the whole vehicle; secondly, it also increases the number of battery modules installed in the battery box 2, thereby increasing the overall power, which is beneficial to meeting the long-range requirements; thirdly, it reduces the space occupied by the battery box 2 in the length direction of the whole vehicle, which is beneficial to controlling the wheelbase of the whole vehicle and reducing the turning radius of the vehicle.

[0042] Among them, the cross-sectional height dimension of the battery box 2 can be set to the maximum according to the height of the vehicle from the ground, and the front and rear span dimensions can be set to the minimum according to the power requirements of the vehicle and the space requirements of the frame chassis 1.

[0043] In some embodiments, the top surface of the battery box 2 is not higher than the top surface of the frame longitudinal beam 11. The battery box 2 does not exceed the frame chassis 1 in height, and the space above the frame chassis 1 is fully provided for cargo loading, which is beneficial to increase the cargo capacity of the whole vehicle.

[0044] In some optional embodiments, the portion of the battery box 2 located outside the two frame longitudinal beams 11 may be higher than the height of the frame chassis 1 , thereby occupying part of the space on the frame chassis 1 to increase the battery capacity of the battery box 2 .

[0045] In some optional embodiments, the battery box 2 located on the inner side of the two frame longitudinal beams 11 may also be higher than the height of the frame longitudinal beams 11 and remain level with the height of the battery box 2 on both outer sides of the frame longitudinal beams 11, thereby reducing the loading space above the frame chassis 1 and increasing the battery capacity of the battery box 2 on the frame chassis 1.

[0046] In some embodiments, Figure 3 As shown, the number of the connecting mechanisms 3 is at least two, and the two connecting mechanisms 3 correspond to the two grooves of the battery box 2 one by one and are located in the corresponding grooves. Each of the connecting mechanisms 3 includes: a mounting seat 31, the mounting seat 31 is fixed in the groove of the battery box 2; a mounting ear plate 32, the mounting ear plate 32 is fixed to the frame longitudinal beam 11 in the groove; and a pin shaft 33, the pin shaft 33 passes through the mounting seat 31 and the mounting ear plate 32 in sequence to fix the battery box 2 on the two frame longitudinal beams 11. Specifically, when the jacking assembly is performed, the mounting seat 31 on the battery box 2 is slowly moved up. When the mounting ear plate 32 is located inside the mounting seat 31, and the pin hole of the mounting ear plate is coaxial with the pin hole of the mounting seat 31, the pin shaft 33 is inserted at this time to lock and complete the assembly, so that the battery box 2 can be quickly replaced to replace the new battery box 2, which solves the problem that the traditional method can only charge the battery box 2 slowly, which wastes a lot of waiting time and cannot achieve a fast replacement operation.

[0047] Among them, setting the connecting mechanism 3 in the two grooves of the battery box 2 can further fully utilize the space in the frame chassis 1, further increase the battery capacity of the battery box 2, and reduce the space occupancy rate of the connecting mechanism 3.

[0048] When installing the battery box 2, the battery box 2 is moved to the bottom of the frame chassis 1 by an external transporter, and the battery box 2 is slowly lifted up by the lifting device on the transporter, so that the mounting seat on the battery box 2 is positioned with the mounting ear plate 32 on the frame longitudinal beam 11, and then the installation of the battery box 2 is completed by the pin shaft 33, which solves the problem that the traditional device is installed on the top of the frame chassis 1 or on both sides of the frame chassis 1 by hoisting, and there is a collision between the battery box 2 and the frame chassis 1 during hoisting, causing damage to the battery box 2 or the frame chassis 1. The installation operation is convenient and safe. Among them, the installation and maintenance process of the battery box 2 adopts a vertical path to achieve overall installation and disassembly maintenance below the frame chassis 1.

[0049] In some optional embodiments, the connection mechanisms 3 in each groove can be arranged in four to eight groups to improve the stability of the battery box 2 installed on the two frame longitudinal beams 11. Specifically, there is no specific limit on the number of connection mechanisms 3, and the number of connection mechanisms 3 is actually determined according to the length of the battery box 2.

[0050] In some embodiments, Figure 4 and Figure 5 As shown, the upper half of the cross section of the pin 33 is a trapezoid. The upper half of the cross section of the pin 33 refers to the height direction of the vehicle body. Specifically, the cross section of the pin 33 is an isosceles trapezoid, and the narrow end of the isosceles trapezoid faces upward, so that the three planes of the pin 33 are all subjected to force on the weight of the battery box 2, and its inclined surface is subjected to force, which increases the force area and the force direction, ensuring the left-right centering of the battery box 2, and can constrain its freedom of rotation on the horizontal plane to achieve the left-right centering of the battery box 2, parallel to the frame longitudinal beam 11; solve the problem that the stress of the traditional circular axle pin is concentrated in the vertical direction and the force is tangent to the line contact, and avoid the problems of excessive stress on the axle pin and easy wear of the contact line under force.

[0051] In some optional embodiments, the lower half of the cross-section of the pin 33 may also be a trapezoid, so that the overall cross-section of the pin 33 is roughly diamond-shaped, but the top and bottom of the pin 33 are both flat (that is, the cross-section of the pin 33 is two inverted trapezoids). Similarly, the two inclined surfaces and the top surface of the upper and lower halves of the pin 33 are subjected to force, which increases the force-bearing area and the force direction, ensures the left-right centering of the battery box 2, and can constrain its freedom of rotation in the horizontal plane, so as to achieve the left-right centering of the battery box 2 and be parallel to the frame longitudinal beam 11, thereby ensuring the reliability of the connection of the connecting mechanism 3.

[0052] In some optional embodiments, the cross-sectional corners of the pin shaft 33 are rounded to facilitate the limiting and guiding of the pin shaft 33 and the pin holes on the mounting seat 31 and the mounting ear plate 32 .

[0053] In some optional embodiments, the upper half of the cross-section of the pin shaft 33 is a right-angled trapezoid, and the inclined surfaces of the pin shaft 33 in the two grooves are in opposite directions, with the inclined surface of one pin shaft 33 facing the left and the inclined surface of the other pin shaft 33 facing the right. When the battery box 2 is fixed to the mounting seat 31 and the mounting ear plate 32 by the pin shaft 33, the problem that the stress of the traditional circular pin shaft is concentrated on the same axis and the circular pin shaft is easily damaged due to excessive force is solved.

[0054] In some embodiments, Figure 5 and 6As shown, the connection mechanism 3 may include: a cross bar 34; two connection brackets 35, the two connection brackets 35 correspond to the opposite ends of the cross bar 34 one by one, and are fixed to the corresponding end of the cross bar 34, and the other ends of the two connection brackets 35 are fixed to one of the frame longitudinal beams 11, so that the connection brackets 35 and the cross bar 34 enclose a receiving space for receiving the battery box 2. Among them, a cross bar 34 and two connection brackets 35 are used to form a receiving space for installing the battery box 2, so that the battery box 2 can be firmly fixed on the two frame longitudinal beams 11, and its structure is simple and the design is reasonable.

[0055] In some embodiments, such as Figure 6 As shown, each of the connecting brackets 35 is L-shaped, and the vertical section and the bent section of each of the connecting brackets 35 are detachably connected. The connecting bracket 35 can be assembled with two rods, so that when the connecting mechanism 3 faces battery boxes 2 of different sizes, it only needs to replace its vertical section or bent section accordingly to meet the changes in the height or width of the battery box 2.

[0056] In some embodiments, such as Figure 6 As shown, the cross bar 34 and the two connecting brackets 35 form a set of fixed components 1. In the length direction of the frame longitudinal beam 11, the connecting mechanism 3 includes multiple groups of fixed components 1 arranged at intervals, and multiple groups of fixed components 1 are fixed with multiple longitudinal bars 36 arranged at intervals. Specifically, the longitudinal bars 36 are embedded in the top of the cross bar 34 that fixes each fixed component 1. The connecting mechanism 3 includes multiple groups of fixed components 1, which can improve the firmness of the battery box 2 during installation. At the same time, multiple longitudinal bars 36 are fixed to multiple groups of fixed components 1, so that the connection between multiple groups of fixed components 1 is more firm, ensuring the reliability of the connecting mechanism 3.

[0057] In some optional embodiments, the side walls of the connecting bracket 35 of the multiple sets of fixing components can also be fixedly connected by a rod, so as to further improve the structural strength of the connecting mechanism 3. When the battery box 2 collides, the connecting mechanism 3 can provide good protection for the battery box 2 therein.

[0058] In some optional embodiments, in the length direction of the frame longitudinal beam 11, the positions of the two sets of fixing components located at the front end and the rear end slightly exceed the front and rear boundaries of the battery box 2, thereby reducing the space occupied by the connecting mechanism 3 on both sides of the frame.

[0059] In some embodiments, such as Figure 6As shown, two frame cross beams 12 are fixedly arranged between the frame longitudinal beams 11, and the battery box 2 is at least partially located between the two frame cross beams 12; the connecting mechanism 3 includes: two connecting skeletons 37, in the length direction of the frame longitudinal beam 11, the two connecting skeletons 37 are spaced apart on the opposite sides of the battery box 2, one end of the two connecting skeletons 37 is respectively fixed to one of the cross bars 34, and the other end thereof is respectively fixed to one of the frame cross beams 12. The connecting skeleton 37 is L-shaped, the bending section of the connecting skeleton 37 is fixed to the bottom of the cross bar 34, and the vertical section thereof is fixed to the frame cross beam 12, so that the connecting mechanism 3 is also connected and installed with the frame cross beam 12, and the stability of the installation of the battery box 2 is further improved.

[0060] In some optional embodiments, in the length direction of the vehicle body, the front connecting skeleton 37 and the rear connecting skeleton 37 fix the bottom of the corresponding frame cross beam 12, reducing the occupation of the internal space of the frame chassis 1 by the connecting mechanism 3, and further reducing the occupation of the internal space of the frame chassis 1 by the connecting mechanism 3.

[0061] In some optional embodiments, the connecting frame 37 may also be fixed to the side wall of the frame crossbeam 12 .

[0062] In some embodiments, the two connecting skeletons 37 are a set of fixed components 2. In the length direction of the frame crossbeam 12, the connecting mechanism 3 includes multiple sets of fixed components 2 arranged at intervals, and a connecting rod 38 is fixed between any two adjacent sets of fixed components 2. The connecting rod 38 connects the two adjacent connecting skeletons 37 to improve the stability of the supporting connection of the two connecting skeletons 37.

[0063] In some optional embodiments, the cross bar 34, the connecting bracket 35, the longitudinal bar 36, the connecting frame 37 and the connecting rod 38 constitute a connecting mechanism 3, and a layer of protective cloth can be wrapped and installed on the outer wall of the connecting mechanism 3 to protect the battery box 2 in the connecting mechanism 3. The protective cloth is made of fireproof material.

[0064] Furthermore, the cross bar 34, connecting bracket 35, longitudinal bar 36, connecting frame 37 and connecting rod 38 are all arranged with a hollow structure, so that the connecting mechanism 3 can collapse and absorb energy when facing a collision, absorb and buffer part of the impact energy, ensure that the battery box 2 is subjected to less impact energy, prevent the battery pack in the battery box 2 from colliding and catching fire, and greatly improve the safety of the battery box 2.

[0065] In some embodiments, such as Figure 1 and 2As shown, a cab lower component 4 is installed at the front of the chassis 1 and below the cab, wherein the cab lower component 4 includes an electric control power distribution system and a front cooling system. An electric drive system 5 is installed at the rear of the chassis 1, wherein the electric drive system 5 may include an electric drive axle module, a wheel hub motor axle module or a motor gearbox traditional axle module. The chassis 1 is in the form of an electric drive axle module, and is installed with the first connection mechanism 3, i.e., the first electric truck provided in the embodiment of the present invention.

[0066] In some embodiments, Figure 4 As shown, the frame chassis 1 is in the form of a conventional motor-gearbox bridge module, and is installed with a second type of connecting mechanism 3, i.e., the second type of electric truck provided in the embodiment of the present invention.

[0067] In some embodiments, Figure 5 As shown, the embodiment of the present invention provides a third type of electric truck, which is equipped with the second type of connecting mechanism 3, and its electric drive system 5 is in the form of an electric drive axle module.

[0068] In some embodiments, Figure 6 As shown, the embodiment of the present invention provides a fourth type of electric truck, which is equipped with the second type of connecting mechanism 3, and its electric drive system 5 is a traditional bridge module of the motor gearbox.

[0069] In the above-mentioned embodiments, Figure 8 As shown, the battery box 2 is provided with internal battery system components 6, which include a battery module 61, a charging interface 62, and an MSD (manual maintenance switch), etc. The battery module 61 is a plurality of modular battery packs installed in the battery box 2, and the components that need to be operated, such as the charging interface 62 and the MSD (manual maintenance switch), are arranged outside the battery box 2 or other positions on the chassis.

[0070] In the above-mentioned embodiment, the frame chassis 1 may further include chassis accessories, which are installed at the rear half of the frame chassis 1 and include modules such as brakes, steering, suspension, and tires.

[0071] In some embodiments, the embodiments of the present invention provide a vehicle, including the frame chassis 1 described in some of the above embodiments. Among them, the battery box 2 is constrained to occupy the space of the frame chassis 1, and the first connection mechanism 3 can be used to constrain it in the groove of the battery box 2, thereby reducing the space occupied by the connection mechanism 3, further increasing the battery capacity of the battery box 2, and reducing the space occupancy rate of the connection mechanism 3; or the second frame-type connection mechanism 3 is used to fix the battery box 2 on the frame longitudinal beam 11, which is convenient to install, facilitates the overall installation, disassembly and maintenance of the battery box 2, reduces the complexity of the installation process, and solves the problem that the battery box 2 is arranged on the left and right sides of the frame chassis 1 in the related technology, and the battery box 2 needs to be installed and connected separately, the wiring is scattered, and the installation process is complicated. Among them, whether the first connection mechanism 3 or the second frame-type connection mechanism 3 is used, when the battery box 2 is installed, it is installed by jacking, and its installation is safe and reliable, solving the problem that the traditional hoisting battery box 2 is easy to shake and collide with the frame chassis 1.

[0072] Therefore, the vehicle realizes that all the space above the frame chassis 1 is provided as a cargo loading area, thereby increasing the cargo capacity of the entire vehicle, thereby improving the loading and transportation efficiency of the vehicle; then, the center of gravity of the entire vehicle can be lowered, which is beneficial to the handling stability of the entire vehicle and improves the safety of the entire vehicle; secondly, the space located at the bottom of the frame chassis 1 is fully utilized, the space utilization rate of the frame chassis 1 is expanded, the number of installed battery modules is increased, and the overall power is increased, which is conducive to meeting the long-range requirements.

[0073] In the description of the present invention, it should be noted that the terms "upper", "lower", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0074] It should be noted that, in the present invention, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0075] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A frame chassis, It is characterized in that It includes: Two frame longitudinal beams (11) arranged in parallel; A battery box (2), the battery box (2) being arranged at the bottom of the frame longitudinal beam (11), and having two parallel grooves formed on the top of the battery box (2) in the length direction of the frame longitudinal beam (11), the two grooves being respectively used to accommodate one frame longitudinal beam (11), and the battery box (2) being at least partially located between the inner sides of the two frame longitudinal beams (11), and at least partially located on the outer sides of the two frame longitudinal beams (11); A connecting mechanism (3), wherein the connecting mechanism (3) fixes the frame longitudinal beam (11) and the battery box (2); The number of the connecting mechanisms (3) is at least two, the two connecting mechanisms (3) correspond to the two grooves of the battery box (2) one by one, and are located in the corresponding grooves, and each connecting mechanism (3) comprises: A mounting seat (31), wherein the mounting seat (31) is fixed in a groove of the battery box (2); A mounting lug (32) fixed to the frame longitudinal beam (11) in the groove; A pin shaft (33), the pin shaft (33) sequentially passing through the mounting seat (31) and the mounting ear plate (32) to fix the battery box (2) on the two frame longitudinal beams (11); The upper half of the cross section of the pin shaft (33) is an isosceles trapezoid, and its narrow end faces upward.

2. The frame chassis as claimed in claim 1, Features: The top surface of the battery box (2) is not higher than the top surface of the frame longitudinal beam (11).

3. The frame chassis as claimed in claim 1, Features: The connecting mechanism (3) comprises: Crossbar (34); Two connecting brackets (35), the two connecting brackets (35) correspond to opposite ends of the cross bar (34) one by one and are fixed to the corresponding end of the cross bar (34), and the other ends of the two connecting brackets (35) are fixed to one of the frame longitudinal beams (11), so that the connecting brackets (35) and the cross bar (34) enclose a receiving space for receiving the battery box (2).

4. The frame chassis as claimed in claim 3, Features: Each of the connecting brackets (35) is L-shaped, and the vertical section and the bent section of each of the connecting brackets (35) are detachably connected.

5. The frame chassis as claimed in claim 3, Features: The cross bar (34) and the two connecting brackets (35) form a set of fixed components one. In the length direction of the frame longitudinal beam (11), the connecting mechanism (3) includes a plurality of sets of fixed components one arranged at intervals, and a plurality of longitudinal bars (36) arranged at intervals are fixed between the plurality of sets of fixed components one.

6. The frame chassis according to claim 3 or 4, Features: Two frame cross beams (12) are fixedly arranged at intervals between the frame longitudinal beams (11), and the battery box (2) is at least partially located between the two frame cross beams (12); The connecting mechanism (3) comprises: Two connecting frames (37) are spaced apart and distributed on opposite sides of the battery box (2) in the length direction of the frame longitudinal beam (11); one end of the two connecting frames (37) is respectively fixed to one of the cross bars (34), and the other end thereof is respectively fixed to one of the frame cross beams (12).

7. The frame chassis as claimed in claim 6, Features: The two connecting frames (37) form a set of fixed components 2. In the length direction of the frame crossbeam (12), the connecting mechanism (3) includes a plurality of sets of fixed components 2 arranged at intervals, and a connecting rod (38) is fixed between any two adjacent sets of fixed components 2.

8. A vehicle, It is characterized in that It comprises a frame chassis as described in any one of claims 1-7.

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