A battery-powered vehicle chassis structure and a vehicle

Abstract

The present invention relates to a bottom frame structure of a power battery box and a vehicle, which includes: a bottom frame for installing a power battery box thereon; a driving device installed on the bottom frame, a driving end of the driving device is connected with a first limiting part, and a second limiting part adapted to the first limiting part is arranged on the power battery box; the driving device is used for driving the first limiting part and the second limiting part to be assembled and matched to lock the power battery box on the bottom frame; or driving the first limiting part away from the second limiting part in the reverse direction to unlock the power battery box. The present invention realizes the stable fixation of the power battery box, so that there is no gap between the power battery box and the bottom frame, the connection of the power battery box is stable, the structure is simple, and the safety is high; at the same time, when the power battery box needs to be replaced, the driving device drives the first limiting part away from the second limiting part to release the assembly of the power battery box and realize the rapid unlocking of the power battery box.

Description

Technical Field

[0001] The present invention relates to the field of electric vehicles, and particularly to a bottom frame structure of a power battery box and a vehicle. Background Art

[0002] At present, the power battery quick replacement technology can replace the fully charged battery pack on the vehicle with the battery pack that needs to be replenished with electric energy in a relatively short time, thus breaking through the restriction of charging time. At present, most of the quick replacement solutions for the power battery box of electric vehicles set a bottom base for the power battery box on the vehicle frame to connect the power battery box and realize the quick replacement operation of the power battery box.

[0003] In the related art, the connection of the battery box is unstable. During the driving of the vehicle, if there is bumping, due to the existence of gaps, the battery box will shake, and even cause damage to the battery box, with low safety, it is difficult to ensure the reliable connection between the power battery box and the vehicle, and other problems will be caused. Summary of the Invention

[0004] Embodiments of the present invention provide a bottom frame structure of a power battery box and a vehicle to solve the problems in the related art that the connection of the battery box is unstable. During the driving of the vehicle, if there is bumping, due to the existence of gaps, the battery box will shake, and even cause damage to the battery box, with low safety, it is difficult to ensure the reliable connection between the power battery box and the vehicle, and other problems will be caused.

[0005] In a first aspect, a bottom frame structure of a power battery box is provided, which includes: a bottom frame for installing a power battery box thereon; a driving device installed on the bottom frame, a driving end of the driving device is connected with a first limiting part, and a second limiting part adapted to the first limiting part is arranged on the power battery box; the driving device is used to drive the first limiting part and the second limiting part to be assembled and matched to lock the power battery box on the bottom frame; or drive the first limiting part away from the second limiting part in the reverse direction to unlock the power battery box.

[0006] The beneficial effect of adopting the above further technical solution is that the power battery box is hoisted and placed on the top of the bottom frame, the driving device is started to work, driving the first limiting part to approach the second limiting part, so that the first limiting part and the second limiting part are assembled and matched, thereby limiting and fixing the power battery box on the bottom frame, or driving the driving device to work in the reverse direction, driving the first limiting part away from the second limiting part, unlocking the assembly between the first limiting part and the second limiting part, and thus unlocking the fixing work of the power battery box, realizing the unlocking work of the power battery box. The power battery box can be firmly fixed, there is no gap between the power battery box and the bottom frame, the connection of the power battery box is stable, the structure is simple, and the safety is high.

[0007] In some embodiments, the driving device includes: a fixed seat fixed on the chassis; a first double-acting cylinder fixed to the fixed seat; and a limiting rod connected to the first piston rod of the first double-acting cylinder, so that the first piston rod drives the limiting rod to lock the power battery box to the chassis or drive the limiting rod to unlock the power battery box.

[0008] The beneficial effect of adopting the above further technical solution is that the first double-acting cylinder is fixed on the inner side wall of the chassis. The bottom of the power battery box has a notch structure, and a limiting block adapted to the limiting rod is provided on the inner side wall of the notch. A limiting hole adapted to the limiting rod is formed in the limiting block. When the first piston rod of the first double-acting cylinder is started to extend, the limiting rod moves into the limiting hole, thereby limiting and fixing the power battery box on the top of the chassis, that is, the installation of the power battery box is realized by the assembly method of the bolt and the socket.

[0009] In some embodiments, the driving device further includes: a rotating rod, one end of the rotating rod is rotatably connected to the fixed seat, and the other end of the rotating rod is rotatably connected to the limiting rod; one end of the limiting rod is hinged to the first piston rod, and the other end of the limiting rod is bent.

[0010] The beneficial effect of adopting the above further technical solution is that the rotating rod restricts the movement track of the limiting rod. When the first piston rod is driven to extend, under the limitation of the rotating rod, the bent end of the limiting rod will be driven away from the power battery box to realize the unlocking of the power battery box. When the first piston rod is driven to contract, under the limitation of the rotating rod, the bent end of the limiting rod will be driven close to the inside of the power battery box, thereby pressing the power battery box against the top of the chassis.

[0011] In some embodiments, the driving device further includes: a second double-acting cylinder with a piston disposed therein. One of the inlets and outlets of the second double-acting cylinder is communicated with one of the inlets and outlets of the first double-acting cylinder through a channel, and the cavity of the communication is filled with hydraulic oil. When power is provided to the other inlet and outlet of the second double-acting cylinder to push the piston therein to move, the power is transmitted to the first double-acting cylinder through the hydraulic oil in the channel to push the first piston rod to contract, so that the limiting rod locks the power battery box; when it is necessary to unlock the power battery box, power is provided to the other inlet and outlet of the first double-acting cylinder to push the first piston rod to extend, and the power is transmitted to the second double-acting cylinder through the hydraulic oil in the channel to push the piston in the second double-acting cylinder to move in the reverse direction.

[0012] The beneficial effects of adopting the above further technical solution are as follows: Power is provided to the second double-acting cylinder to drive the piston in the second double-acting cylinder to move upward. The piston will squeeze the hydraulic oil to flow into the first double-acting cylinder through the channel, pushing the first piston rod in the first double-acting cylinder to move downward, realizing the locking work of the power battery box. Power is provided to the first double-acting cylinder to drive the first piston rod in the first double-acting cylinder to move upward. The first piston rod will squeeze the hydraulic oil to flow into the second double-acting cylinder through the channel, resetting the piston in the second double-acting cylinder and realizing the locking of the power battery box.

[0013] In some embodiments, the driving device further includes: a third double-acting cylinder, which is fixed on the second double-acting cylinder, and the third double-acting cylinder can drive the second piston rod therein to extend to block the channel; when the power battery box is locked, the second piston rod extends to block the channel, and when the power battery box needs to be unlocked, the second piston rod contracts to connect the channel.

[0014] The beneficial effects of adopting the above further technical solution are as follows: By blocking the channel connected by the third double-acting cylinder, the cavity on the side of the first double-acting cylinder is blocked, realizing the locking of the power battery box. In the case of damage to the second double-acting cylinder, the third double-acting cylinder can play a guarantee role to prevent the locking work of the power battery box from failing.

[0015] In some embodiments, a spring is arranged in the third double-acting cylinder, and the elastic force of the spring is used to push the second piston rod to extend to block the channel.

[0016] The beneficial effects of adopting the above further technical solution are as follows: Under the action of the elastic force of the spring, the first piston rod in the first double-acting cylinder remains in a contracted state, so as to realize the locked state of the power battery box assembly without the need to provide a power source. Its locking state can be maintained without power, with good reliability, energy saving and environmental protection.

[0017] In some embodiments, a first guiding rod is fixed on each of the opposite inner side walls of the chassis. In the height direction of the chassis, the two first guiding rods extend upward and are inclined inwardly towards the chassis, and the two first guiding rods form a group, and multiple groups are arranged at intervals on the opposite inner side walls of the chassis.

[0018] The beneficial effects of adopting the above further technical solution are as follows: When hoisting the power battery box, the inner wall of the bottom slot of the power battery box will slowly fall onto the top of the chassis under the limit guidance of multiple first guiding rods, guiding the front and rear sides of the power battery box to quickly correct the installation position and improving the installation efficiency of the power battery box.

[0019] In some embodiments, guide rods II are fixed on both of the other two opposite inner sidewalls of the chassis. In the height direction of the chassis, the two guide rods II extend upward and are inclined inwardly towards the chassis, and the two guide rods II form a group, and at least one group is provided on each of the other opposite inner sidewalls of the chassis.

[0020] The beneficial effect of adopting the above further technical solution is that under the limitation of the two guide rods II, the left and right sides of the power battery box can be quickly corrected to the installation position, so that the power battery box can accurately fall on the top of the chassis, and there is no need to manually move and adjust the position of the power battery box on the top of the chassis, greatly improving the installation efficiency of the power battery box.

[0021] In some embodiments, at least two positioning pins are fixed on the top of the chassis.

[0022] The beneficial effect of adopting the above further technical solution is that under the limiting and guiding of the guide rod I and the guide rod II, the power battery box correctly falls at the top position of the chassis. At the same time, two positioning holes adapted to the positioning pins are opened at the bottom of the power battery box to realize the preliminary limiting and fixing of the power battery box, and the positioning pins have sufficient strength to prevent the power battery box from moving or rotating on the top of the chassis.

[0023] In a second aspect, a vehicle is provided, including the power battery box chassis structure described above.

[0024] The beneficial effect of adopting the above technical solution is that the power battery box chassis structure is fixed on the vehicle frame, which facilitates the disassembly or installation of the power battery box on the vehicle. At the same time, when the power battery box is in the locked state, its locked state does not require power, has good reliability, and is energy-saving and environmentally friendly.

[0025] The beneficial effects brought by the technical solution provided by the present invention include: a second limiting portion is provided on the power battery box, and the driving device drives the first limiting portion to be assembled and cooperate with the second limiting portion to firmly fix the power battery box on the chassis, realizing the stable fixation of the power battery box, so that there is no gap between the power battery box and the chassis, the power battery box is stably connected, the structure is simple, and the safety is high; at the same time, when the power battery box needs to be replaced, the driving device drives the first limiting portion away from the second limiting portion to realize the disassembly relationship of the power battery box, thereby realizing the quick unlocking of the fixed state of the power battery box. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0027] Figure 1 Schematic three-dimensional structure diagram of the chassis provided by the embodiment of the present invention;

[0028] Figure 2 Schematic side internal structure diagram of the chassis provided by the embodiment of the present invention;

[0029] Figure 3 Schematic structure diagram of the locking state of the driving device provided by the embodiment of the present invention;

[0030] Figure 4 Schematic structure diagram of the unlocking state of the driving device provided by the embodiment of the present invention;

[0031] Figure 5 Schematic front view structure diagram of the chassis provided by the embodiment of the present invention;

[0032] Figure 6 Schematic side view structure diagram of the chassis provided by the embodiment of the present invention;

[0033] Figure 7 Schematic partial three-dimensional structure diagram of the power battery box assembled on the chassis provided by the embodiment of the present invention;

[0034] Figure 8 Schematic three-dimensional structure diagram of the limit seat provided by the embodiment of the present invention.

[0035] In the figure: 1, chassis; 2, power battery box; 21, limit seat; 3, driving device; 31, fixed seat; 32, first double-acting cylinder; 33, limit rod; 34, rotating rod; 35, second double-acting cylinder; 36, channel; 37, third double-acting cylinder; 38, spring; 4, first guide rod; 5, second guide rod; 6, positioning pin. Detailed implementation manners

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0037] An embodiment of the present invention provides a battery power box chassis structure and a vehicle, so as to solve the problems in the related art that the connection of the battery box is unstable. During the driving of the vehicle, if there is bumping, due to the existence of gaps, the battery box will shake, and even cause damage to the battery box, with low safety, it is difficult to ensure a reliable connection between the power battery box and the vehicle, and other problems will be caused.

[0038] See Figure 1 and 2 As shown, an embodiment of the present invention provides a battery power box chassis structure, which includes: a chassis 1 for installing a battery power box 2 thereon; a driving device 3 installed on the chassis 1, a driving end of the driving device 3 is connected with a first limiting part, and a second limiting part adapted to the first limiting part is arranged on the battery power box 2; the driving device 3 is used to drive the first limiting part and the second limiting part to be assembled and matched to lock the battery power box 2 on the chassis 1; or drive the first limiting part away from the second limiting part in the reverse direction to unlock the battery power box 2.

[0039] Among them, the battery power box 2 is hoisted and placed on the top of the chassis 1, the driving device 3 is started to work, driving the first limiting part to approach the second limiting part, so that the first limiting part and the second limiting part are assembled and matched, thereby limiting and fixing the battery power box 2 on the chassis 1, or driving the driving device 3 to work in the reverse direction, driving the first limiting part away from the second limiting part, unlocking the assembly between the first limiting part and the second limiting part, thereby unlocking the fixing work of the battery power box 2, and realizing the unlocking work of the battery power box 2. The stable fixation of the battery power box 2 is realized, there is no gap between the battery power box 2 and the chassis 1, the connection of the battery power box 2 is stable, the structure is simple, and the safety is high.

[0040] In some optional embodiments, the number of the driving devices 3, the first limiting parts and the second limiting parts can be set to be multiple. Each driving device 3 drives the assembly and matching between one first limiting part and one second limiting part, and the driving device 3 is fixedly installed on the inner side of the chassis 1, and the second limiting part is arranged on the inner side wall of the bottom slot of the battery power box. Among them, the multiple driving devices 3 are arranged at intervals along the length direction of the chassis 1, which can ensure the stable fixation of the battery power box 2 and ensure uniform force on the four sides of the battery power box 2.

[0041] In some optional embodiments, the driving device 3 can be installed on the outer side of the chassis 1, then the second limiting part is also correspondingly arranged on the outer wall of the battery power box 2, and the fixation work of the battery power box 2 can also be realized.

[0042] In some embodiments, such as Figure 2As shown, the driving device 3 may include: a fixed seat 31 fixed on the chassis 1; a first double-acting cylinder 32 fixed to the fixed seat 31; a limiting rod 33 connected to the first piston rod of the first double-acting cylinder 32, so that the first piston rod drives the limiting rod 33 to lock the power battery box 2 to the chassis 1, or drives the limiting rod 33 to unlock the power battery box 2. Among them, the first double-acting cylinder 32 is fixed on the inner side wall of the chassis 1. The bottom of the power battery box 2 is in a notch structure, and a limiting block adapted to the limiting rod 33 is provided on the inner side wall of the notch. A limiting hole adapted to the limiting rod 33 is opened on the limiting block. When the first piston rod of the first double-acting cylinder 32 is started to extend, the limiting rod 33 moves into the limiting hole, thereby limiting and fixing the power battery box 2 on the top of the chassis 1, that is, the installation of the power battery box 2 is realized by the assembly method of the plug and the jack.

[0043] Specifically, the telescopic direction of the first piston rod can be parallel or inclined to the length direction of the chassis 1, which can ensure restricting the movement of the power battery box 2 in the vertical direction. Or when the telescopic direction of the first piston rod is perpendicular to the length direction of the chassis 1, a plate body is detachably fixed to the end of the first piston rod, and the cross section of the plate body is larger than the limiting hole. Thus, when the first piston rod contracts and returns, the plate body will press against the limiting block to realize restricting the movement of the power battery box 2 in the vertical direction, or detach the plate body, and then drive the first piston rod to continue to contract and leave the limiting hole to realize the unlocking work of the power battery box 2.

[0044] In some embodiments, as Figure 3 and 4 shown, the driving device 3 may further include: a rotating rod 34, one end of the rotating rod 34 is rotatably connected to the fixed seat 31, and the other end of the rotating rod 34 is rotatably connected to the limiting rod 33; one end of the limiting rod 33 is hinged to the first piston rod, and the other end of the limiting rod 33 is bent. Among them, the rotating rod 34 restricts the movement track of the limiting rod 33. When the first piston rod is driven to extend, under the limitation of the rotating rod 34, the bent end of the limiting rod 33 will be driven away from the inside of the limiting seat 21 on the power battery box 2 to realize the unlocking work of the power battery box 2. When the first piston rod is driven to contract, under the limitation of the rotating rod 34, the bent end of the limiting rod 33 will be driven close to the inside of the limiting seat 21 on the power battery box 2, thereby pressing the power battery box 2 against the top of the chassis 1.

[0045] Among them, as Figure 7 and 8As shown, the limiting seat 21 is U-shaped, and the width of its U-shape is adapted to the width of the limiting rod 33. While pressing and fixing the power battery box 2, it also restricts the tendency of the power battery box 2 to translate on the chassis 1.

[0046] In some alternative embodiments, the number of the rotating rods 34 can be two. The two rotating rods 34 are arranged in parallel and are rotatably connected to the limiting rod 33 at the same time, forming a parallelogram mechanism. When the first rotating rod 34 is broken, the other rotating rod 34 can also play a limiting role to ensure the normal operation of the limiting rod 33, greatly improving the reliability and stability of the chassis.

[0047] In some embodiments, the driving device 3 may further include: a double-acting cylinder II 35. A piston is arranged in the double-acting cylinder II 35. One of the inlets and outlets of the double-acting cylinder II 35 is communicated with one of the inlets and outlets of the double-acting cylinder I 32 through a channel 36, and the cavity where they are communicated is filled with hydraulic oil. When power is provided to the other inlet and outlet of the double-acting cylinder II 35 to push the piston therein to move, the power is transmitted to the double-acting cylinder I 32 through the hydraulic oil in the channel 36 to push the first piston rod to contract, so that the limiting rod 33 locks the power battery box 2. When it is necessary to unlock the power battery box 2, power is provided to the other inlet and outlet of the double-acting cylinder I 32 to push the first piston rod to extend, and the power is transmitted to the double-acting cylinder II 35 through the hydraulic oil in the channel 36 to push the piston in the double-acting cylinder II 35 to move in the reverse direction. Among them, when power is provided to the double-acting cylinder II 35 to drive the piston in the double-acting cylinder II 35 to move upward, the piston will squeeze the hydraulic oil to flow into the double-acting cylinder I 32 through the channel 36, pushing the first piston rod in the double-acting cylinder I 32 to move downward, realizing driving the limiting rod 33 to rotate and approach the inside of the limiting seat 21 to lock the power battery box 2. When power is provided to the double-acting cylinder I 32 to drive the first piston rod in the double-acting cylinder I 32 to move upward, the first piston rod will squeeze the hydraulic oil to flow into the double-acting cylinder II 35 through the channel 36, resetting the piston in the double-acting cylinder II 35, realizing driving the limiting rod 33 to rotate away from the inside of the limiting seat 21. The inner diameter of the double-acting cylinder II 35 can be smaller than the inner diameter of the double-acting cylinder I 32. When the power battery box 2 is in the locked state, according to the principle of Pascal's law, the double-acting cylinder II 35 provides a smaller power to achieve a larger force for the double-acting cylinder I 32. Thus, when the power battery box 2 is in the locked state, only a smaller power source is needed to ensure the stable and reliable locked state of the power battery box 2, achieving the purpose of saving electric energy.

[0048] In some embodiments, the driving device 3 may further include: a double-acting cylinder three 37, which is fixed on the double-acting cylinder two 35, and the double-acting cylinder three 37 can drive the second piston rod therein to extend to block the passage 36; when locking the power battery box 2 is completed, the second piston rod extends to block the passage 36, and when unlocking the power battery box 2 is required, the second piston rod contracts to communicate the passage 36. When the power battery box 2 is in a locked state, the passage 36 communicated with the double-acting cylinder three 37 is blocked, so that the hydraulic oil in the cavity on the side of the double-acting cylinder one 32 is blocked, and the limiting rod 33 locks the limiting seat 21 and does not move. In the case of the failure of the double-acting cylinder two 35, the double-acting cylinder three 37 can play a safeguard role and keep the power battery box 2 in a locked state all the time.

[0049] In some alternative embodiments, the double-acting cylinder one 32, the double-acting cylinder two 35, and the double-acting cylinder three 37 are all driven by air cylinders or hydraulic cylinders.

[0050] In some embodiments, a spring 38 is arranged in the double-acting cylinder three 37, and the elastic force of the spring 38 is used to push the second piston rod to extend to block the passage 36. When the power battery box 2 is in a locked state, the double-acting cylinder three 37 does not need to continuously provide power to keep the second piston rod therein in an extended state to block the passage 36. Under the action of the elastic force of the spring 38, the first piston rod in the double-acting cylinder one 32 remains in a contracted state, so as to realize the locked state of the assembly between the limiting rod 33 and the limiting seat 21 without the need to provide a power source. The locked state is maintained without power, with good reliability, energy saving and environmental protection.

[0051] In some embodiments, such as Figure 6As shown, on the opposite inner side walls of the chassis 1, a first guiding rod 4 is fixedly installed on each. In the height direction of the chassis 1, the two first guiding rods 4 extend upward and are inclined inwardly towards the chassis 1. And the two first guiding rods 4 form a group, and multiple groups are arranged at intervals on the opposite inner side walls of the chassis 1. Among them, the upper connection line of the two relatively arranged first guiding rods 4, the lower connection line thereof, and the first guiding rods 4 themselves together form a trapezoidal shape. When hoisting the power battery box 2, the inner wall of the bottom notch of the power battery box 2 will slowly fall onto the top of the chassis 1 under the limit and guidance of multiple first guiding rods 4. When the power battery box 2 completely lands on the top of the chassis 1, there is a certain gap between the front and rear inner side walls of the notch of the power battery box 2 and the lower ends of the first guiding rods 4, which can ensure that the power battery box 2 can be smoothly lifted out, realizing the limiting function when the power battery box 2 is hoisted and dropped, and improving the installation efficiency of the power battery box 2. The first guiding rod 4 protrudes above the top of the chassis 1. The first guiding rod 4 first contacts the inner wall of the notch of the power battery box 2. The first guiding rod 4 can guide the front and rear sides of the power battery box 2 to quickly correct the installation position, but does not affect the positioning of the power battery box 2.

[0052] In some embodiments, as Figure 5 shown, on the opposite inner side walls of the other part of the chassis 1, a second guiding rod 5 is fixedly installed on each. In the height direction of the chassis 1, the two second guiding rods 5 extend upward and are inclined inwardly towards the chassis 1. And the two second guiding rods 5 form a group, and at least one group is arranged on the opposite inner side walls of the other part of the chassis 1. Among them, the upper connection line of the two relatively arranged second guiding rods 5, the lower connection line thereof, and the second guiding rods 5 themselves together form a trapezoidal shape. Under the limit of the two second guiding rods 5, it can guide the left and right sides of the power battery box 2 to quickly correct the installation position, so as to realize that the power battery box 2 can correctly land on the top of the chassis 1 without having to manually move and adjust the position of the power battery box 2 on the top of the chassis 1, greatly improving the installation efficiency of the power battery box 2. At the same time, there is a certain gap between the left and right inner side walls of the notch of the power battery box 2 and the lower ends of the second guiding rods 5, ensuring that there is a certain gap between the power battery box 2 and the second guiding rods 5 when the power battery box 2 lands on the top of the chassis 1, ensuring that the power battery box 2 can be smoothly lifted out subsequently.

[0053] In some embodiments, at least two positioning pins 6 are fixedly installed on the top of the chassis 1. Under the limit and guidance of the first guiding rod 4 and the second guiding rod 5, the power battery box 2 correctly lands at the top position of the chassis 1. At the same time, two positioning holes adapted to the positioning pins 6 are provided at the bottom of the power battery box 2, realizing the preliminary limit fixation of the power battery box 2. The positioning pins 6 have sufficient strength to prevent the power battery box 2 from moving or rotating on the top of the chassis 1, and at the same time facilitate the subsequent locking work of the driving device 3 on the power battery box 2.

[0054] In some alternative embodiments, one of the positioning holes of the power battery box 2 is elongated, and its width is adapted to the diameter of the positioning pin 6. When the power battery box 2 is hoisted and lowered, the elongated positioning hole is more convenient for assembling with the corresponding positioning pin 6. When assembling the other set of positioning pins 6 and positioning holes, the distance of the power battery box 2 moving in the left-right direction can be finely adjusted, so that the other set of positioning pins 6 and positioning holes can be assembled. After the assembly of this set of positioning pins 6 and positioning holes, the left-right movement of the power battery box 2 can be limited, making the installation of the power battery box 2 more convenient and improving the installation efficiency of the power battery box 2.

[0055] In some alternative embodiments, the number of the positioning pins 6 can be four. The four positioning pins 6 are distributed around the top of the chassis 1. Four positioning holes adapted to the positioning pins 6 are provided at the bottom of the power battery box 2, which can also realize the limiting and fixing of the power battery box 2.

[0056] Alternatively, two positioning holes at the same end of the bottom of the power battery box 2 can be set to be elongated, and its width is adapted to the diameter of the positioning pin 6, which is convenient for the limiting and fixing of the power battery box 2.

[0057] In some alternative embodiments, the number of the positioning pins 6 can be two, which are arranged diagonally at the top of the chassis 1. Two corresponding positioning holes are provided at the bottom of the power battery box 2. Among them, one positioning hole can be adapted to the positioning pin 6, and the other positioning hole can be set to be elongated, and its width is adapted to the diameter of the positioning pin 6.

[0058] In some embodiments, the embodiments of the present invention provide a vehicle, including the above-mentioned power battery box chassis structure. Fixing the power battery box chassis structure on the vehicle frame realizes the convenience of disassembling or installing the power battery box 2 on the vehicle. At the same time, when the power battery box 2 is in the locked state, its locked state does not require power, with good reliability, energy conservation and environmental protection.

[0059] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings. It is 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 orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Unless otherwise clearly defined and limited, the terms "installation", "connection" and "connection" 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 directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside 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 specific situations.

[0060] 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 actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0061] The above are only specific embodiments of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can 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 these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. A bottom frame structure of a power battery box, characterized in that, It includes: A chassis (1) for mounting a power battery box (2) thereon. A driving device (3) mounted on the chassis (1), with a first limiting portion connected to the driving end of the driving device (3), and a second limiting portion adapted to the first limiting portion is provided on the power battery box (2). The driving device (3) is used to drive the first limiting portion and the second limiting portion to be assembled and cooperate to lock the power battery box (2) on the chassis (1). Or drive the first limiting portion away from the second limiting portion in the reverse direction to unlock the power battery box (2). The driving device (3) includes: A fixed seat (31) fixed on the chassis (1). A first double-acting cylinder (32) fixed to the fixed seat (31). A limiting rod (33) connected to the first piston rod of the first double-acting cylinder (32), so that the first piston rod drives the limiting rod (33) to lock the power battery box (2) on the chassis (1), or drives the limiting rod (33) to unlock the power battery box (2). The driving device (3) further includes: A second double-acting cylinder (35) with a piston provided therein. One of the inlets and outlets of the second double-acting cylinder (35) is communicated with one of the inlets and outlets of the first double-acting cylinder (32) through a channel (36), and the cavity therein is filled with hydraulic oil. When power is provided to the other inlet and outlet of the second double-acting cylinder (35) to push the piston therein to move, the power is transmitted to the first double-acting cylinder (32) through the hydraulic oil in the channel (36) to push the first piston rod to contract, so that the limiting rod (33) locks the power battery box (2). When it is necessary to unlock the power battery box (2), power is provided to the other inlet and outlet of the first double-acting cylinder (32) to push the first piston rod to extend, and the power is transmitted to the second double-acting cylinder (35) through the hydraulic oil in the channel (36) to push the piston in the second double-acting cylinder (35) to move in the reverse direction.

2. The underframe structure of the power battery box according to claim 1, wherein: The driving device (3) further includes: A rotating rod (34) with one end rotatably connected to the fixed seat (31) and the other end rotatably connected to the limiting rod (33). One end of the limiting rod (33) is hinged to the first piston rod, and the other end of the limiting rod (33) is bent.

3. The underframe structure of the power battery box according to claim 1, wherein: The driving device (3) further includes: A third double-acting cylinder (37) fixed on the second double-acting cylinder (35), and the third double-acting cylinder (37) can drive the second piston rod therein to extend to block the channel (36). When the locking of the power battery box (2) is completed, the second piston rod extends to block the channel (36). When it is necessary to unlock the power battery box (2), the second piston rod contracts to communicate the channel (36).

4. The underframe structure of the power battery box according to claim 3, characterized in that: A spring (38) is arranged inside the double-acting cylinder three (37), and the elastic force of the spring (38) is used to push the second piston rod to extend out so as to block the channel (36).

5. The underframe structure of the power battery box according to claim 1, wherein: Guide rods one (4) are fixed on both opposite inner side walls of the chassis (1). In the height direction of the chassis (1), the two guide rods one (4) extend upward and are inclined inwardly with respect to the chassis (1), and the two guide rods one (4) form a group, and multiple groups are arranged at intervals on both opposite inner side walls of the chassis (1).

6. The underframe structure of the power battery box according to claim 1, wherein: Guide rods two (5) are fixed on both opposite inner side walls of the other part of the chassis (1). In the height direction of the chassis (1), the two guide rods two (5) extend upward and are inclined inwardly with respect to the chassis (1), and the two guide rods two (5) form a group, and at least one group is arranged on both opposite inner side walls of the other part of the chassis (1).

7. The underframe structure of the power battery box according to claim 1, characterized in that: At least two positioning pins (6) are fixed on the top of the chassis (1).

8. A vehicle, characterized in that: It includes the power battery box chassis structure according to any one of claims 1-7.

Images