Vehicle bottom frame of battery-replacing electric vehicle and battery-replacing electric vehicle

Abstract

The utility model provides a vehicle bottom frame of a battery-changing electric vehicle and the battery-changing electric vehicle, the vehicle bottom frame of the battery-changing electric vehicle defines a battery compartment accommodating space, and a battery compartment inlet and outlet is formed in the bottom of the vehicle bottom frame; and a plurality of first clamping parts are formed on two opposite first side walls of the vehicle bottom frame and are used for being correspondingly clamped with second clamping parts on two opposite second side walls of the battery compartment. The vehicle bottom frame is an independent structural component and can be separated from the battery bin, so that the vehicle bottom frame can be conveniently and independently maintained and repaired; the vehicle bottom frame is provided with the annular circumferential side wall, and the battery bin inlet and outlet is formed in the bottom, so that the battery bin enters and exits the battery bin containing space from the bottom of the vehicle bottom frame, an electric bin door does not need to be arranged, the structure of the vehicle bottom frame is simplified, and the vehicle manufacturing cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the electric automobile battery swap technical field, specifically a kind of bottom frame of battery swap electric automobile and the battery swap electric automobile with the bottom frame of this vehicle. BACKGROUND

[0002] In the related art, the battery swap electric vehicle is usually provided with a bottom frame and a battery compartment at the bottom of the vehicle, the battery compartment is fixedly arranged in the bottom frame, the battery is arranged in the battery compartment, and a locking and unlocking device is arranged on the battery compartment to lock and unlock the battery.

[0003] The side surface of the battery compartment is formed with a battery inlet and outlet, and the battery enters and exits the battery compartment from the side surface of the battery compartment. Correspondingly, the corresponding side surface of the bottom frame must also be designed with an opening to avoid hindering the battery from entering and exiting the battery compartment. At the same time, an electric compartment door is arranged at the opening side of the bottom frame to open and close the battery inlet and outlet. When the battery does not need to be replaced, the electric compartment door remains closed to protect the battery in the compartment and make the outside of the vehicle neat and beautiful.

[0004] The above structure results in a complex structure of the bottom frame of the battery swap electric vehicle, high manufacturing cost, and great difficulty in maintenance and repair of the related structures of the bottom frame and the battery compartment due to the limited space at the bottom of the vehicle.

[0005] Therefore, it is urgent to improve the bottom frame of the battery swap electric vehicle in the related art to simplify its structure as much as possible, reduce the manufacturing cost of the vehicle, and facilitate maintenance and repair. SUMMARY

[0006] The utility model provides a kind of bottom frame of battery swap electric vehicle and battery swap electric vehicle, can solve the problem of complex structure of bottom frame in the related art, high manufacturing cost of vehicle, inconvenient maintenance.

[0007] To achieve the above technical effects, the bottom frame of the battery swap electric vehicle provided by the utility model is a bottom frame of a battery swap electric vehicle, which surrounds a battery compartment accommodation space, and the bottom of the bottom frame is formed with a battery compartment inlet and outlet communicating with the battery compartment accommodation space.

[0008] The bottom frame includes an annular circumferential side wall, and the circumferential side wall includes two opposite first side walls. The first side wall is formed with a plurality of first clamping portions corresponding to the second clamping portions on the two opposite second side walls of the battery compartment.

[0009] In the technical scheme of the utility model, the following additional technical features are also included:

[0010] The first side wall comprises an outer shell and a reinforcing framework in the shell, the outer shell comprises an outer side plate and an inner side plate, and the inner side plate is provided with an inner side through portion; the reinforcing framework is provided with a clamping block at a position corresponding to the inner side through portion, the outer side of the clamping block abuts against the outer side plate, the inner side of the clamping block is provided with a first protruding portion, the first protruding portion is embedded in the inner side through portion and abuts against the bottom wall of the inner side through portion, and the first protruding portion is provided with a guide inclined surface, the guide inclined surface is away from the top wall of the inner side through portion to form the first clamping portion.

[0011] The reinforcing framework comprises a plurality of vertical beams arranged at intervals along the length direction of the first side wall, the inner and outer sides of the vertical beams are provided with second protruding portions, the outer side plate and the inner side plate are provided with through holes corresponding to the second protruding portions, and the second protruding portions are embedded in the through holes.

[0012] The clamping block is located between two adjacent vertical beams, the two adjacent vertical beams are connected by a horizontal beam, and the clamping block is fixedly arranged on the horizontal beam.

[0013] The first side wall further comprises a bottom reinforcing beam fixedly connected to the bottom of the outer shell, the bottom reinforcing beam extends from one end of the outer shell to the other end, and the inner side of the bottom reinforcing beam is provided with a guide inclined surface facilitating the battery compartment to enter the battery compartment containing space.

[0014] The vehicle bottom frame further comprises two opposite third side walls connected perpendicularly to the two first side walls, the inner side of the third side wall is provided with an end reinforcing beam, and the inner side of the end reinforcing beam is provided with a guide inclined surface facilitating the battery compartment to enter the battery compartment containing space.

[0015] A sensing component is arranged at a diagonal position of the top of the vehicle bottom frame, and is used for sensing whether the battery compartment is in place.

[0016] The utility model also provides a battery swap electric vehicle, and the battery swap electric vehicle comprises:

[0017] A vehicle bottom frame is arranged at the bottom of the battery swap electric vehicle.

[0018] A battery compartment is arranged in the battery compartment containing space of the vehicle bottom frame, and the two opposite second side walls of the battery compartment are provided with a plurality of second clamping portions.

[0019] Compared with the prior art, the utility model has the following advantages and positive effects:

[0020] The utility model discloses an electric vehicle's car bottom frame, its enclosure has the battery compartment containing space, and the bottom of car bottom frame forms the battery compartment import and export that communicates with battery compartment containing space, the two opposite first side wall in the annular circumferential side wall of car bottom frame forms a plurality of first clamping parts, is used for corresponding clamping with the second clamping part on the two opposite second side wall of battery compartment, then the car bottom frame in the utility model is a independent structural component, can separate with battery compartment, is convenient for maintaining, repairing to car bottom frame alone,

[0021] The car bottom frame has annular circumferential side wall, and the bottom forms the battery compartment import and export, realizes the battery compartment from the car bottom frame bottom import and export battery compartment containing space, when battery compartment and battery enter car bottom frame, the circumferential side wall of car bottom frame can wrap the side of battery compartment and battery in the battery, guarantees the safe use of battery, need not set up electric door again, is favorable to simplifying the structure of car bottom frame, reduces the manufacturing cost of vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, below will to the drawing needed to use in the embodiment or prior art description a simple introduction, obviously, the drawing in the following description is some embodiments of the utility model, for those skilled in the art, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0023] Figure 1 It is the perspective view of the car bottom frame in some embodiments of the utility model from one angle;

[0024] Figure 2 It is the perspective view of the car bottom frame in some embodiments of the utility model from another angle;

[0025] Figure 3 It is the partial exploded structural schematic view of the car bottom frame in some embodiments of the utility model;

[0026] Figure 4 It is the partial exploded structural schematic view of the first side wall of the car bottom frame in some embodiments of the utility model;

[0027] Figure 5 It is the perspective view of the battery compartment in some embodiments of the utility model from one angle;

[0028] Figure 6 It is the perspective view of the battery compartment in some embodiments of the utility model from another angle;

[0029] Figure 7 It is the perspective view of the battery compartment in some embodiments of the utility model from another angle;

[0030] Figure 8Structure schematic view of the battery compartment in some embodiments of the utility model for omitting the outer cover body;

[0031] Figure 9 Three-dimensional view of the unlocking mechanism of the battery compartment in some embodiments of the utility model from one perspective;

[0032] Figure 10 Three-dimensional view of the unlocking mechanism of the battery compartment in some embodiments of the utility model from another perspective;

[0033] Figure 11 Bottom perspective three-dimensional view of the sliding piece of the unlocking mechanism of the battery compartment in some embodiments of the utility model;

[0034] Figure 12 Assembly structure schematic view of the battery compartment and the bottom frame in some embodiments of the utility model;

[0035] Figure 13 Side view of Figure 12 ;

[0036] Figure 14 A-A sectional view of Figure 13 ;

[0037] Figure 15 B part enlarged view of Figure 14 .

[0038] Reference signs:

[0039] 100, bottom frame; 110, battery compartment containing space; 120, battery compartment inlet and outlet; 130, first side wall; 131, outer side plate; 132, inner side plate; 133, inner side through part; 134, clamping block; 135, first protruding part; 136, guide inclined surface; 137, vertical beam; 138, second protruding part; 139, through hole; 1310, cross beam; 1311, bottom reinforcing beam; 1312, wedge-shaped guide block; 1313, end reinforcing beam; 1314, positioning hole; 140, first clamping part; 150, third side wall; 160, horizontal baffle;

[0040] 200, battery compartment; 210, battery containing space; 220, battery inlet and outlet; 230, second clamping part; 231, first rotating shaft; 232, second rotating shaft; 240, second side wall; 250, first torsional spring; 260, sliding piece; 261, actuating cooperation part; 262, extension part; 270, bottom through part; 280, sliding guide part; 290, first connecting rod; 2100, second connecting rod; 2110, third rotating shaft; 2120, guide limiting strip; 2130, cushion block; 2140, outer cover body; 2150, framework structure. DETAILED DESCRIPTION

[0041] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the terms "mount", "connect", "connection" should be understood in broad sense, for example, it can be fixed connection, also can be detachable connection, or integrally connected, it can be direct connection, also can be indirect connection through intermediate medium, it can be the communication inside two elements, the above-mentioned terms in the utility model can be understood according to specific circumstances by the ordinary skill in the art.

[0042] In addition, the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as there is no conflict.

[0043] In some embodiments of the application, a battery swap electric vehicle is provided, comprising a bottom frame 100 and a battery compartment 200.

[0044] Referring to Figures 1 to 4 The bottom frame 100 encloses a battery compartment containing space 110 for containing the battery compartment 200, and the bottom of the bottom frame 100 is open to form a battery compartment entrance and exit 120, which communicates with the battery compartment containing space 110, realizing the entry and exit of the battery compartment 200 from the bottom of the bottom frame 100 to the battery compartment containing space 110.

[0045] The bottom frame 100 comprises an annular circumferential side wall, which comprises two opposite first side walls 130, and a plurality of first clamping portions 140 are formed on the first side wall 130. The first clamping portion 140 is used for one-to-one clamping with a plurality of second clamping portions 230 on the second side wall 240 of the battery compartment 200 corresponding to the two opposite first side walls 130 of the bottom frame 100.

[0046] Then the bottom frame 100 in the embodiment of the application is an independent structural component, which can be separated from the battery compartment 200, and the bottom frame 100 is convenient for maintenance and repair; the bottom frame 100 has an annular circumferential side wall, and the bottom of the bottom frame 100 is formed with a battery compartment entrance and exit 120, so that the battery compartment 200 enters and exits the battery compartment containing space 110 from the bottom of the bottom frame 100, and when the battery compartment 200 and the battery enter the bottom frame, the circumferential side wall of the bottom frame 100 can wrap the side surface of the battery compartment 200 and the battery in the battery compartment, ensuring the safety of the battery in use, without the need to set an electric compartment door, which is conducive to simplifying the structure of the bottom frame 100 and reducing the manufacturing cost of the vehicle.

[0047] In some embodiments of the application, the battery profile is approximately rectangular, and the profiles of the battery compartment 200 and the bottom frame 100 are approximately rectangular. Then for the bottom frame 100, in addition to the two opposite first side walls 130, the circumferential side wall further comprises two opposite third side walls 150 connected perpendicularly to the two first side walls 130, so as to enclose the circumferential side wall of the rectangular bottom frame 100.

[0048] In some embodiments of the present application, the first side wall 130 is a lengthwise side wall of the rectangular underbody frame 100, and the first clamping portion 140 can be provided in plurality along the lengthwise direction of the first side wall 130.

[0049] The circumferential side wall of the rectangular underbody frame 100 is provided with horizontal baffles 160 at the top four corners, so as to limit and stop the upward movement of the battery compartment 200 into the battery compartment accommodating space 110. Meanwhile, the underbody frame 100 can be fixedly connected to the underbody beam of the battery swap electric vehicle through the horizontal baffles 160.

[0050] In some embodiments of the present application, a set of inductive components (not shown) are arranged at the top corners of the underbody frame 100 respectively, such as being arranged on the bottom surface of the two horizontal baffles 160 at the opposite corners, for sensing whether the battery compartment 200 is in place. The inductive components can be proximity sensors or pressure sensors, etc., which are not limited here.

[0051] In order to increase the structural strength of the underbody frame 100 as much as possible on the basis of reducing the weight of the underbody frame 100 as much as possible, in some embodiments of the present application, as shown in Figure 4 The first side wall 130 of the underbody frame 100 comprises an outer shell and a reinforcing framework in the shell.

[0052] Specifically, the outer shell comprises an outer side plate 131 and an inner side plate 132, and the inner side plate 132 is formed with an inner side through portion 133; the reinforcing framework is provided with a clamping block 134 at a position corresponding to the inner side through portion 133, the outer side of the clamping block 134 is fixedly connected to the outer side plate 131, the inner side of the clamping block 134 is formed with a first protruding portion 135, the first protruding portion 135 is embedded in the inner side through portion 133 and abuts against the bottom wall of the inner side through portion 133, the first protruding portion 135 has a guide inclined surface 136, the guide inclined surface 136 is at a distance from the top wall of the inner side through portion 133, so that the guide inclined surface 136 and the inner side through portion 133 form a first clamping portion 140 in the shape of a groove, i.e. the first clamping portion 140 is a clamping groove.

[0053] The clamping block 134 is integrally connected with the outer side plate 131, and is embedded in the inner side through portion 133 and abuts against the bottom wall of the inner side through portion 133. The clamping block 134 can be further fixed on the bottom wall of the inner side through portion 133, so that the first clamping portion 140 in the form of a clamping groove has sufficient depth and structural strength, and can cooperate with the second clamping portion 230 on the battery compartment 200 to support the battery compartment 200 and the battery in the battery compartment. If the first clamping portion 140 is formed on a whole side plate, in order to ensure the depth and structural strength of the first clamping portion 140, the thickness of the side plate must be large, which increases the weight and manufacturing cost of the whole first side wall 130 and even the vehicle bottom frame 100, and accordingly increases the manufacturing cost of the battery swap vehicle.

[0054] In some embodiments of the present application, the inner side plate 132, the outer side plate 131, the reinforcing framework and the clamping block 134 can be integrally connected by welding.

[0055] In some embodiments of the present application, as shown in Figures 1 to 4 The outer side plate 131 is provided with a positioning hole 1314 at a position corresponding to the clamping block 134, and the outer side of the clamping block 134 is provided with a positioning protrusion (not shown due to viewing angle), which is embedded in the positioning hole 1314. On the one hand, the positioning protrusion can position the clamping block 134, and on the other hand, the positioning protrusion can increase the contact area between the clamping block 134 and the outer side plate 131, thereby improving the connection reliability.

[0056] Further, the reinforcing framework includes a plurality of vertical beams 137 arranged at intervals along the length direction of the first side wall 130. The inner and outer sides of the vertical beams 137 are formed with second protruding portions 138, and the outer side plate 131 and the inner side plate 132 are correspondingly formed with through holes 139. The second protruding portions 138 are embedded in the through holes 139. The plurality of second protruding portions 138 of the plurality of vertical beams 137 are connected with the inner side plate 132 and the outer side plate 131 respectively, which can increase the contact area between the reinforcing framework and the outer side plate 131 and the inner side plate 132, thereby further increasing the connection strength of the reinforcing framework and the structural strength of the whole first side wall 130 and even the vehicle bottom frame 100.

[0057] In some embodiments of the present application, the shell further includes a top plate, a bottom plate, a front end plate and a rear end plate, which form a closed hollow shell structure with the inner side plate 132 and the outer side plate 131. The top plate and the bottom plate can be integrally bent structures with the outer side plate 131 or the inner side plate 132, so that Figure 4As shown, the top plate and the bottom plate are in an integral bending structure with the outer side plate 131, and are welded to the top edge and the bottom edge of the inner side plate 132. The top plate and the bottom plate are also provided with a plurality of protruding structures along the length direction. The top edge and the bottom edge of the inner side plate 132 are provided with corresponding recessed structures. The protruding structures and the recessed structures are matched one by one, thereby improving the welding reliability.

[0058] Similarly, the connection parts of the front end plate and the outer side plate 131, the connection parts of the front end plate and the inner side plate 132, the connection parts of the rear end plate and the outer side plate 131, and the connection parts of the rear end plate and the inner side plate 132 are also provided with matching concave-convex structures, thereby further improving the welding reliability and the structural strength of the entire first side wall 130.

[0059] As shown, Figure 4 The clamping block 134 is located between two adjacent vertical beams 137 connected by the cross beam 1310. The clamping block 134 is fixedly arranged on the cross beam 1310. The clamping block 134, the vertical beam 137, and the cross beam 1310 are integrally connected by welding, thereby further improving the structural strength.

[0060] In some embodiments of the present application, as shown, Figures 1 to 3 The first side wall 130 further includes a bottom reinforcing beam 1311 fixedly connected to the bottom of the shell. The bottom reinforcing beam 1311 extends from one end of the shell to the other end. The inner side surface of the bottom reinforcing beam 1311 is provided with a guide inclined surface for guiding the battery compartment 200 to enter the battery compartment containing space 110.

[0061] Specifically, the bottom reinforcing beam 1311 and the shell can be fixedly connected by welding or screw connection, which is not limited herein. The guide inclined surface can be formed by a wedge-shaped guide block 1312 fixedly arranged on the inner side surface of the bottom reinforcing beam 1311. On the one hand, the bottom reinforcing beam 1311 can further improve the structural strength of the entire vehicle bottom frame 100. On the other hand, the guide inclined surface for guiding the battery compartment 200 can be conveniently arranged without increasing the complexity of the shell structure as much as possible.

[0062] In some embodiments of the present application, the inner side surfaces of two opposite third side walls 150 of the vehicle bottom frame 100 are provided with end reinforcing beams 1313 to enhance the structural strength of the third side wall 150. The inner side surfaces of the end reinforcing beams 1313 are also provided with guide inclined surfaces for guiding the battery compartment 200 to enter the battery compartment containing space 110.

[0063] For the battery compartment 200, referring to Figures 5 to 11, the battery compartment 200 is arranged in the battery compartment accommodating space 110 and detachably connected with the underframe 100; the battery compartment 200 encloses a battery accommodating space 210 for accommodating the battery, and a battery inlet and outlet 220 is formed on one side wall of the battery compartment 200, i.e. the battery enters and exits the battery compartment 200 from the side of the battery compartment 200; a plurality of second clamping portions 230 are formed on a second side wall 240 of the battery compartment 200 corresponding to the two opposite first side walls 130 of the underframe 100, and the second clamping portions 230 are correspondingly clamped and matched with the first clamping portions 140 to lock the battery compartment 200 in the battery compartment accommodating space 110.

[0064] When the first side wall 130 is the length direction side wall of the rectangular underframe 100, correspondingly, the second side wall 240 of the battery compartment 200 is the length direction side wall of the rectangular battery compartment 200, the second clamping portions 230 are arranged along the length direction of the second side wall 240 and correspondingly arranged with the plurality of first clamping portions 140 to improve the locking reliability of the battery compartment 200 in the underframe 100.

[0065] For the second clamping portion 230 of the battery compartment 200, as shown in Figures 5 to 11 , the second clamping portion 230 is a clamping jaw, one end of which has a first rotating shaft 231, the first rotating shaft 231 is fixedly connected on the second side wall 240, the top end of the second clamping portion 230 is rotationally connected on the first rotating shaft 231 and further rotationally connected on the second side wall 240 of the battery compartment 200, and the bottom surface of the second clamping portion 230 serves as a clamping surface for abutting and matching with the first clamping portion 140; a first torsional spring 250 is sleeved on the first rotating shaft 231, and the restoring force of the first torsional spring 250 drives the second clamping portion 230 to tightly match with the first clamping portion 140, i.e. the second clamping portion 230 is clamped in the first clamping portion 140 under the elastic restoring force of the first torsional spring 250.

[0066] In the process that the battery compartment 200 and the battery in the battery compartment move upward through the battery compartment inlet and outlet 120 at the bottom of the underframe 100 to enter the battery compartment accommodating space 110, the second clamping portion 230 of the battery compartment 200 is always pressed to deform and store energy of the first torsional spring 250 under the extrusion of the first side wall 130 of the underframe 100, and the second clamping portion 230 is equivalent to being in a compressed state, when the second clamping portion 230 reaches the position of the first clamping portion 140, the second clamping portion 230 is clamped in the first clamping portion 140 under the restoring force of the first torsional spring 250, thereby locking and positioning the battery compartment 200 in the underframe 100, as shown in Figures 12 to 15 .

[0067] Under the gravity of the battery compartment 200 and the battery in the battery compartment, the second clamping portion 230 is stably clamped in the first clamping portion 140.

[0068] To realize the disengagement of the battery compartment 200 and the vehicle bottom frame 100, in some embodiments of the present application, an unlocking mechanism is arranged on the battery compartment 200, which drives the second clamping part 230 to disengage from the first clamping part 140 when in action to unlock the battery compartment 200 and the battery in the compartment.

[0069] For the unlocking mechanism of the battery compartment 200, as shown in Figures 8 to 11 , it includes a sliding piece 260 and a conversion assembly, the sliding piece 260 is arranged on the battery compartment 200 and slides in the first direction, and the conversion assembly is arranged between the sliding piece 260 and the second clamping part 230 to connect the sliding piece 260 and the second clamping part 230. The conversion assembly is configured to convert the reciprocating sliding of the sliding piece 260 into the rotation of the second clamping part 230, so that the second clamping part 230 can rotate and disengage from the first clamping part 140, and the first torsional spring 250 is deformed and stores energy during the rotation of the second clamping part 230 and the disengagement from the first clamping part 140.

[0070] Therefore, when the battery compartment 200 and the battery in the compartment need to be unlocked, the sliding piece 260 slides in the first direction, and then the second clamping part 230 is driven to rotate and disengage from the first clamping part 140 through the conversion assembly. During the rotation of the second clamping part 230 and the disengagement from the first clamping part 140, the second clamping part 230 extrudes the first torsional spring 250 to deform and store energy.

[0071] In some embodiments of the present application, the sliding piece 260 is arranged on the bottom plate of the battery compartment 200, and a push cooperation part 261 is formed on the bottom surface of the sliding piece 260. A bottom through part 270 is formed on the bottom plate of the battery compartment 200 corresponding to the push cooperation part 261, so as to facilitate the operation of the push cooperation part 261 from the bottom of the battery compartment 200 to make the sliding piece 260 slide. For example, a driving part such as an electric push rod is arranged on the transfer trolley of the battery swap station to cooperate with the push cooperation part 261 to push the sliding piece 260 to slide in the first direction.

[0072] Since the second clamping part 230 is arranged on the second side wall 240 of the battery compartment 200, that is, on the length direction side wall of the battery compartment 200, the first direction is the horizontal direction perpendicular to the second side wall 240, that is, the width direction of the battery compartment 200.

[0073] In some embodiments of the present application, as shown in Figure 7 and Figure 11 , the push cooperation part 261 is a plurality of strip-shaped recessed parts arranged in the first direction in sequence to facilitate pushing.

[0074] As shown in Figures 8 to 10As shown, the bottom surface of the battery compartment 200 is formed with a sliding guide 280, which is in sliding guide cooperation with the sliding member 260 to guide the sliding of the sliding member 260, ensure smooth operation, and further ensure smooth and reliable rotation operation of the second clamping part 230.

[0075] Specifically, the sliding guide 280 can be a slide or a chute, which is not specifically limited here. To reduce the height direction space occupation, the sliding member 260 is a horizontal plate with a large area to ensure structural strength.

[0076] For the conversion assembly, in some embodiments of the present application, it is a linkage assembly, as shown in Figure 9 and Figure 10 As shown, it includes a first linkage 290 and a second linkage 2100, one end of the first linkage 290 is hinged to the sliding member 260, the other end is hinged to one end of the second linkage 2100, the other end of the second linkage 2100 is hinged to the second pivot shaft 232 of the second clamping part 230 (the second pivot shaft 232 is located at the lower part of the second clamping part 230 and is integrally connected with the second clamping part 230), the second linkage 2100 is hinged to the second side wall 240 of the battery compartment 200 through a third pivot shaft 2110 (the third pivot shaft 2110 is fixedly arranged on the second side wall 240 of the battery compartment 200), the first pivot shaft 231, the second pivot shaft 232 and the third pivot shaft 2110 are arranged in parallel and perpendicular to the first direction.

[0077] Then, when the sliding member 260 slides along the first direction, the second clamping part 230 is driven to rotate and disengage from the first clamping part 140 through the transmission of the first linkage 290 and the second linkage 2100.

[0078] The linkage assembly is simple in structure and mechanically driven, without the need for electricity, low in manufacturing cost and low in failure rate.

[0079] In some embodiments of the present application, the same sliding member 260 connects two groups of conversion assemblies, and the two groups of conversion assemblies are respectively connected to two second clamping parts 230 on the opposite second side walls 240, i.e., the two second clamping parts 230 on the opposite second side walls 240 are respectively connected to the same sliding member 260 through a group of conversion assemblies, and the two second clamping parts 230 are synchronously driven to rotate by the same sliding member 260, so as to simplify the structure as much as possible and synchronize the unlocking actions of the multiple second clamping parts 230, so that the battery compartment 200 can be smoothly unlocked.

[0080] Specifically, as shown in Figures 8 to 10As shown, the opposite sides of the sliding member 260 respectively extend outward to form extensions 262, and the extensions 262 on the two sides are respectively connected to the corresponding conversion assemblies. The two sets of conversion assemblies are structurally the same, and only the shape of the first connecting rod 290 is slightly different, so that when the sliding member 260 slides in the first direction, the two sets of conversion assemblies can synchronously drive the second clamping portions 230 on the two sides to be synchronously separated from the corresponding first clamping portions 140.

[0081] For the cooperation between the battery and the battery compartment 200, in some embodiments of the present application, as shown in Figure 5 and Figure 8 As shown, the inner walls of the two inner side walls adjacent to the battery inlet and outlet 220 of the battery compartment 200, i.e., the inner walls of the second side walls 240, are respectively provided with guide limiting strips 2120; the guide limiting strips 2120 are matched with the sliding grooves on the side walls of the battery.

[0082] Specifically, the battery inlet and outlet 220 is arranged on the side surface of the battery compartment 200, and the battery does not need to be taken in and out from the bottom of the battery compartment 200, but is taken in and out from the side surface of the battery compartment 200. The sliding groove on the side surface of the battery cooperates with the guide limiting strip 2120 to guide the movement of the battery and fix the battery, so as to ensure the smooth movement of the battery when the battery enters or moves out of the inside of the battery compartment 200, and prevent the battery from tilting.

[0083] Further, one end of the guide limiting strip 2120 close to the battery inlet and outlet 220 is a tapered structure, so that the guide limiting strip 2120 is more easily inserted into the sliding groove on the side surface of the battery.

[0084] The bottom surface of the battery compartment 200 is provided with a plurality of pads 2130 to lift the battery, prevent the battery from interfering with the sliding of the sliding member 260, and the guide limiting strip 2120 is also staggered with the conversion assembly and the second clamping portion 230 to prevent interference.

[0085] Although the battery inlet and outlet 220 of the battery compartment 200 exposes one side surface of the battery when the battery is in the battery compartment 200, when the battery compartment 200 and the battery enter the circumferential side wall of the underframe 100, the circumferential side wall of the underframe 100 can completely wrap the side surface of the battery compartment 200 and the battery, as shown in Figure 12 to ensure the safety of the battery in use.

[0086] In some embodiments of the present application, as shown in Figures 5 to 8 The battery compartment 200 includes an outer cover 2140 made of metal and an internal skeleton structure 2150 to ensure the structural strength and sealing performance of the battery compartment 200 as much as possible. The second clamping portion 230 is rotatably connected to the side wall of the skeleton structure 2150, and the sliding member 260 is slidably arranged on the bottom wall of the skeleton structure 2150.

[0087] Finally, it should be noted that: the above examples are used to illustrate the technical solutions of the present application, but not limited to; although the present application is described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still be modified to the technical solutions recorded in the foregoing examples, or part of the technical features are replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A chassis frame for a battery-swapping electric vehicle, characterized in that, The vehicle underframe encloses a battery compartment housing space, and the bottom of the vehicle underframe forms a battery compartment inlet / outlet that communicates with the battery compartment housing space. The vehicle underframe includes an annular circumferential sidewall, which includes two opposing first sidewalls; a plurality of first snap-fit ​​portions are formed on the first sidewalls for corresponding snap-fit ​​portions on the two opposing second sidewalls of the battery compartment.

2. The chassis frame of the battery-swapping electric vehicle according to claim 1, characterized in that, The first sidewall includes an outer shell and a reinforcing frame fixedly connected together. The outer shell includes an outer side plate and an inner side plate. An inner through portion is formed on the inner side plate. A locking block is provided on the reinforcing frame at a position corresponding to the inner through portion. The outer side of the locking block abuts against the outer side plate, and a first protrusion is formed on its inner side. The first protrusion is embedded in the inner through portion and abuts against the bottom wall of the inner through portion. The first protrusion has a guide slope. The guide slope is a certain distance away from the top wall of the inner through portion to form the first locking portion.

3. The chassis frame of the battery-swapping electric vehicle according to claim 2, characterized in that, The reinforcing frame includes multiple vertical beams spaced apart along the length of the first sidewall. The inner and outer sides of the vertical beams have second protrusions. The outer and inner side plates have corresponding through holes, and the second protrusions are embedded in the through holes.

4. The chassis frame of the battery-swapping electric vehicle according to claim 3, characterized in that, The locking block is located between two adjacent vertical beams, which are connected by a horizontal beam, and the locking block is fixed on the horizontal beam.

5. The chassis frame of the battery-swapping electric vehicle according to claim 2, characterized in that, The first sidewall also includes a bottom reinforcing beam fixed to the bottom of the outer shell, the bottom reinforcing beam extending from one end of the outer shell to the other end, and a guide slope is formed on the bottom inner side of the bottom reinforcing beam to facilitate the entry of the battery compartment into the battery compartment receiving space.

6. The chassis frame of the battery-swapping electric vehicle according to claim 2, characterized in that, The vehicle underframe also includes two opposing third sidewalls that are perpendicularly connected to the two first sidewalls. The inner sidewalls of the third sidewalls are provided with end reinforcing beams, and the inner sidewalls of the end reinforcing beams form guide slopes that facilitate the entry of the battery compartment into the battery compartment accommodating space.

7. The chassis frame of the battery-swapping electric vehicle according to claim 6, characterized in that, The top of the vehicle's underframe is equipped with sensors at a set of diagonal points to detect whether the battery compartment is in place.

8. A battery-swapping electric vehicle, characterized in that, include: The vehicle underframe is the vehicle underframe according to any one of claims 1 to 7, wherein the top of the vehicle underframe is fixedly connected to the bottom of the battery swapping electric vehicle; The battery compartment has multiple second snap-fit ​​portions formed on its two opposite second sidewalls. The second snap-fit ​​portions snap into the first snap-fit ​​portions to detachably install the battery compartment within the battery compartment receiving space.

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