Elastic component, limiting component, limiting guide device and electric automobile comprising limiting guide device

Abstract

The invention discloses an elastic component, a limiting component, a limiting guide device and an electric vehicle comprising the limiting guide device. The limiting and guiding device comprises an elastic component and a limiting component which are matched with each other. The elastic component is fixed to the inner side wall of a quick-change support of the electric automobile or the outer side wall of a quick-change battery box of the electric automobile, and the elastic component is used for elastically limiting movement of the quick-change battery box in the quick-change support. The elastic component can elastically limit the movement of the quick-change battery box in the quick-change bracket, so that the battery box is prevented from being damaged.

Description

[0001] This application is a divisional of a Chinese invention patent with an application date of August 10, 2020, application number 202010795071.0, and name “Elastic component, limiting component, limiting guide device and electric vehicle comprising the same”. Technical Field

[0002] The present invention relates to the field of electric vehicles, and in particular to an elastic component, a limiting component, a limiting guide device and an electric vehicle comprising the same. Background Art

[0003] At present, automobile exhaust emissions are still an important factor in environmental pollution. In order to control automobile exhaust, people have developed natural cars, hydrogen fuel cars, solar cars and electric cars to replace fuel-powered cars. Among them, electric cars have the most promising application prospects. At present, electric cars mainly include direct charging and quick-change types.

[0004] Quick-swap electric vehicles do not need to spend a long time charging. After the battery is exhausted, the electric vehicle can continue to drive by quickly replacing the battery pack, which is more suitable for use in public transportation.

[0005] There are currently two commonly used methods for replacing batteries in quick-change electric vehicles. One is to insert the quick-change battery box into the quick-change bracket of the electric vehicle from the side of the electric vehicle for installation, and the other is to push the quick-change battery box from the bottom to the top into the quick-change bracket from the bottom of the electric vehicle and fix it with the quick-change bracket. For the latter installation method, the quick-change battery box needs to be accurately positioned when assembling it with the quick-change bracket from bottom to top to avoid installation failure. However, even if the quick-change battery box and the quick-change bracket are accurately positioned, a small amount of deviation is still unavoidable during the actual installation process when the quick-change battery box is inserted. Therefore, the quick-change battery box may still collide with the side wall of the quick-change bracket during the installation process, causing damage to the quick-change battery box.

[0006] In addition, although sensors are used to position the quick-change battery box and the quick-change bracket when they are installed, a positioning guide device is still required to mechanically guide the quick-change battery box into the quick-change bracket when the quick-change battery box is installed into the quick-change bracket. Summary of the invention

[0007] The technical problem to be solved by the present invention is to overcome the above-mentioned defects of the prior art and to provide an elastic component, a limiting component, a limiting guide device and an electric vehicle comprising the same.

[0008] The present invention solves the above technical problems through the following technical solutions:

[0009] An elastic member, the elastic member is fixed to the inner wall of the quick-change bracket of the electric vehicle or the outer wall of the quick-change battery box of the electric vehicle, and the elastic member is used to elastically limit the movement of the quick-change battery box in the quick-change bracket;

[0010] The elastic member includes a mounting portion and a protrusion portion, wherein the mounting portion is used to mount the elastic member on the inner side wall of the quick-change bracket or the outer side wall of the quick-change battery box, and the protrusion portion extends and protrudes relative to the mounting portion in a direction away from the inner side wall of the quick-change bracket or the outer side wall of the quick-change battery box;

[0011] The elastic member includes at least two protrusions distributed along the vertical direction.

[0012] The technical effect of this solution is: the elastic component can elastically limit the movement of the quick-change battery box in the quick-change bracket, thereby avoiding damage to the battery box; the elastic component realizes its elastic buffering function through the protrusion, and the buffering is more reliable; by setting multiple protrusions, its elasticity can be better guaranteed.

[0013] Preferably, the protrusion has an upper inclined surface and a lower inclined surface which are arranged opposite to each other and are inclined from the protrusion end of the protrusion toward the mounting portion.

[0014] The technical effect of this further solution is that better elasticity and guidance are achieved through the inclined surface.

[0015] Preferably, the protrusion has a left inclined surface and a right inclined surface which are arranged opposite to each other and are inclined from the protrusion end of the protrusion toward the mounting portion.

[0016] The technical effect of this further solution is that better elasticity and guidance are achieved through the inclined surface.

[0017] Preferably, the mounting portion is disposed between two adjacent protrusions.

[0018] The technical effect of this further solution is that by arranging the mounting portion between the protrusions, the structure is simplified and the installation is easy.

[0019] Preferably, at least one of the upper end and the lower end of the elastic member is a free end.

[0020] The technical effect of this further solution is to avoid over-positioning of the elastic member.

[0021] Preferably, the elastic member further comprises a snap-fitting portion, which is arranged at the top or bottom of the elastic member and is used to snap-fit ​​with the inner wall of the quick-change bracket or the outer wall of the quick-change battery box of the electric vehicle.

[0022] The technical effect of this further solution is that the installation and positioning of the elastic component is facilitated by the snap-fitting portion.

[0023] Preferably, the engaging portion is formed to be bent toward an inner side wall of the quick-change bracket of the electric vehicle or an outer side wall of the quick-change battery box of the electric vehicle.

[0024] The technical effect of this further solution is to provide a better engagement form.

[0025] Preferably, the elastic member is fixed to the inner wall of the quick-change bracket or the outer wall of the quick-change battery box of the electric vehicle through a threaded member.

[0026] The technical effect of this further solution is that it is convenient to fix the elastic component.

[0027] A limiting member is used to cooperate with the elastic member as described above, the elastic member is arranged on one of the inner wall of the quick-change bracket and the outer wall of the quick-change battery box, and the limiting member is arranged on the other of the inner wall of the quick-change bracket and the outer wall of the quick-change battery box.

[0028] The technical effect of this solution is: elastically limiting the movement of the quick-change battery box in the quick-change bracket, thereby avoiding damage to the battery box.

[0029] Preferably, the limiting member comprises a positioning surface and a guiding surface, the positioning surface is used to abut against the elastic member, and the guiding surface protrudes outwardly from the positioning surface.

[0030] The technical effect of this further solution is that the elastic component can be conveniently guided by the guide surface.

[0031] Preferably, the limiting member includes at least two guide surfaces, which are respectively arranged on both sides of the positioning surface and extend in a vertical direction, and a sliding channel for the elastic member to slide into is formed between the guide surface and the positioning surface.

[0032] The technical effect of this further solution is that the elastic component can be further guided conveniently by the guide surface.

[0033] Preferably, a connecting surface is provided between the guide surface and the positioning surface, and the connecting surface is an arc-shaped surface.

[0034] The technical effect of this further solution is: easy manufacturing.

[0035] A position limiting guide device comprises the elastic component as described above and the position limiting component as described above.

[0036] The technical effect of this solution is: elastically limiting and guiding the movement of the quick-change battery box in the quick-change bracket, thereby avoiding damage to the battery box.

[0037] A quick-change bracket, the inner side wall of which is provided with one or more elastic components or limiting components as described above.

[0038] A quick-change battery box, the outer side wall of which is provided with one or more elastic components or limiting components as described above.

[0039] An electric vehicle comprises the quick-change bracket and the quick-change battery box as described above, when the elastic member is arranged at one of the quick-change bracket and the battery box, the limiting member is arranged at the other of the quick-change bracket and the battery box.

[0040] Preferably, when the quick-change battery box is installed in the quick-change bracket, the elastic component is squeezed by the limiting component to generate deformation.

[0041] The technical effect of this further solution is: elastic limitation between the quick-change battery box and the quick-change bracket is achieved through deformation of the elastic component.

[0042] Preferably, the pre-compression dimension of the elastic component is e, the thickness of the elastic component is c, and the groove depth of the limiting component is d, wherein c=d+e.

[0043] Wherein, the pre-compression size is the compression size of the elastic component when the quick-change battery box is installed in the quick-change bracket.

[0044] Preferably, the distance between the side of the elastic component and the guide surface is a reserved gap t, the width of the elastic component is a, the horizontal battery replacement stroke of the quick-change battery box is s, and the distance between the guide surfaces is b, b=a+2t+s.

[0045] The technical effect of this further solution is: b=a+2t+s can prevent the elastic member 201 from colliding or interfering with the side wall portion 107 of the limiting member 101 when the quick-change battery box 100 is installed on the quick-change bracket 200 and locked horizontally.

[0046] Preferably, when the quick-change battery box is installed in the quick-change bracket, the gap between the outer wall of the quick-change battery box and the inner wall of the quick-change bracket is K, the thickness of the limiting member is F, and KF is greater than 0 and less than 2.

[0047] The technical effect of this further solution is to reserve a gap between the quick-change battery box and the limiting component to avoid collision and interference.

[0048] Preferably, a locking shaft is provided on the battery box, a locking seat is provided on the quick-change bracket, a locking groove for engaging with the locking shaft is provided in the locking seat, the locking groove includes a rising section and a locking section, the locking section extends horizontally from the rising section toward the locking direction, and when the locking shaft is located in the rising section, the distance between the elastic member and the guide surface of the limiting member facing the locking direction is greater than the distance the locking shaft moves from the rising section to the locking position in the locking section.

[0049] The technical effect of this further solution is to prevent the elastic component from colliding or interfering with the side wall of the limiting component when the quick-change battery box is installed on the quick-change bracket and locked horizontally.

[0050] The positive and progressive effects of the present invention are: the elastic member can elastically limit the movement of the quick-change battery box in the quick-change bracket, thereby avoiding damage to the battery box; the elastic member realizes its elastic buffering function through the protrusion, and the buffering is more reliable; by providing multiple protrusions, its elasticity can be better guaranteed. The limiting member, limiting guide device, quick-change bracket, quick-change battery box and electric vehicle have the same effects as above. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 The figure is a schematic diagram of the assembly structure of a quick-change battery box and a quick-change bracket according to an embodiment of the present invention.

[0052] Figure 2 Schematic diagram of the three-dimensional structure of a quick-change battery box according to an embodiment of the present invention.

[0053] Figure 3 FIG. 4 is a schematic diagram of the three-dimensional structure of a quick-change bracket according to an embodiment of the present invention.

[0054] Figure 4 FIG. 1 is a schematic diagram of a three-dimensional structure of an elastic component according to an embodiment of the present invention when viewed from the front.

[0055] Figure 5 FIG. 1 is a schematic diagram of a three-dimensional structure of an elastic component according to an embodiment of the present invention when viewed from the rear.

[0056] Figure 6 Schematic diagram of the front structure of an elastic component according to an embodiment of the present invention.

[0057] Figure 7 Schematic diagram of the rear structure of an elastic component according to an embodiment of the present invention.

[0058] Figure 8 FIG. 4 is a schematic side structural diagram of an elastic component according to an embodiment of the present invention.

[0059] Fig. 9Schematic diagram of the three-dimensional structure of a limiting component according to an embodiment of the present invention.

[0060] Fig.10 It is a schematic front structural diagram of a limiting component according to an embodiment of the present invention.

[0061] Fig.11 1 is a schematic diagram of the rear structural view of a limiting component according to an embodiment of the present invention.

[0062] Fig.12 The figure is a schematic top view of the structure of a limiting component according to an embodiment of the present invention.

[0063] Fig.13 The figure is a schematic top view of the structure of an elastic component and a limiting component in abutment state according to an embodiment of the present invention.

[0064] Fig.14 Schematic diagram of the cross-sectional structure of an elastic component and a limiting component in abutment state according to an embodiment of the present invention.

[0065] Fig.15 Schematic diagram of the structure of a lock slot according to an embodiment of the present invention.

[0066] Fig.16 It is a first schematic diagram showing the relative changes in the matching relationship between the elastic component and the limiting component and the matching relationship between the lock seat and the lock shaft according to an embodiment of the present invention.

[0067] Fig.17 It is a second schematic diagram showing the relative changes in the matching relationship between the elastic component and the limiting component and the matching relationship between the lock seat and the lock shaft according to an embodiment of the present invention.

[0068] Fig.18 The third schematic diagram is a diagram showing the relative changes in the matching relationship between the elastic component and the limiting component and the matching relationship between the lock seat and the lock shaft according to an embodiment of the present invention.

[0069] Fig.19 The fourth schematic diagram is a diagram showing the relative changes in the matching relationship between the elastic component and the limiting component and the matching relationship between the lock seat and the lock shaft according to an embodiment of the present invention.

[0070] Explanation of the accompanying drawings: quick-change battery box 100; limiting member 101; positioning surface 103; guiding surface 104; connecting surface 105; bottom wall portion 106; side wall portion 107; sliding channel 108; locking shaft 111; quick-change bracket 200; elastic member 201; mounting portion 203; mounting hole 204; protrusion 211; upper inclined surface 212; lower inclined surface 213; left inclined surface 214; right inclined surface 215; free end 218; engaging portion 219; lock seat 230; locking groove 231; rising section 233; locking section 234; locking position 236; arc surface 238; lower arc surface 241; upper arc surface 242; arc guide surface 243; gap 245. DETAILED DESCRIPTION

[0071] The present invention is further described below by way of embodiments in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the embodiments.

[0072] The present embodiment provides an electric vehicle, which achieves battery life by removing an old battery that has been used up (the battery is exhausted or the battery has been consumed to a certain extent) and installing a new battery that is fully charged or partially charged (has been charged to a usable extent) on the electric vehicle.

[0073] The electric vehicle includes Figure 2 The quick-change battery box 100 and Figure 3 The quick-change bracket 200 shown in FIG. Figure 1 As shown, the quick-change battery box 100 is mounted on the quick-change bracket 200. By attaching and detaching the quick-change battery box 100 relative to the quick-change bracket 200, the replacement of the old and new batteries as described above is achieved.

[0074] Figure 2 and 3 According to this embodiment, a quick-change battery box 100 and a quick-change bracket 200 are illustrated, but it does not mean that the present invention is only applicable to Figure 2 and 3 The quick-change battery box 100 and the quick-change bracket 200 are of the shapes or structures shown. In other embodiments, the quick-change battery box 100 and the quick-change bracket 200 may also be of other shapes or structures without departing from the subject matter of the present invention.

[0075] The quick-change battery box 100 in the present application refers to a replaceable battery formed in the form of a battery pack, rather than necessarily being a box-type structure.

[0076] The quick-change battery box 100 and the quick-change bracket 200 are limited and guided in the X, Y, and Z directions through a limiting and guiding device.

[0077] The limiting guide device includes an elastic component 201 and a limiting component 101 .

[0078] like Figure 2 and 3 As shown, in this embodiment, the limiting member 101 is disposed on the outer side wall of the quick-change battery box 100 , and the elastic member 201 is disposed on the inner side wall of the quick-change bracket 200 .

[0079] In other embodiments, it may also be configured as follows: the limiting member 101 is disposed on the inner wall of the quick-change bracket 200 , and the elastic member 201 is disposed on the outer wall of the quick-change battery box 100 .

[0080] like Figure 4-8 As shown, the elastic member 201 is used to elastically limit the movement of the quick-change battery box 100 in the quick-change bracket 200 to avoid damage to the quick-change battery box 100 .

[0081] The elastic member 201 includes a mounting portion 203 and a protrusion 211. The mounting portion 203 is used to mount the elastic member 201 on the inner side wall of the quick-change bracket 200. The protrusion 211 extends and protrudes relative to the mounting portion 203 in a direction away from the inner side wall of the quick-change bracket 200. A groove is formed on one side of the protrusion 211 facing the quick-change bracket 200. When the elastic member 201 is mounted on the quick-change bracket 200, a gap defined by the groove is formed between the protrusion 211 and the inner side surface of the quick-change bracket 200. When the battery box is mounted in the quick-change bracket, the protrusion is deformed toward the inner side wall of the quick-change bracket.

[0082] The protrusion 211 has an upper inclined surface 212 and a lower inclined surface 213 which are oppositely disposed and are inclined from the protrusion end of the protrusion 211 toward the mounting portion 203 .

[0083] The protrusion 211 further has a left inclined surface 214 and a right inclined surface 215 which are oppositely arranged and inclined from the protrusion end of the protrusion 211 toward the mounting portion 203 .

[0084] These inclined surfaces make the protrusion 211 have better elasticity and better guidance. The direction of these inclined surfaces only refers to their relative direction, not that they must be placed on the left or right or up or down of the viewer. By providing the upper and lower inclined surfaces and the left and right inclined surfaces on the protrusion 211, when the battery box is installed on the quick-change bracket, the contact guidance between the elastic component and the limiting component is facilitated, the resistance during the relative movement between the two is reduced, and the efficiency of loading and unloading the battery box is improved.

[0085] In this embodiment, the elastic member 201 includes two protrusions 211 distributed along the vertical direction (Z direction). The mounting portion 203 is disposed between two adjacent protrusions 211 .

[0086] By providing a plurality of protrusions 211 , the elasticity thereof can be better ensured.

[0087] However, the present invention is not limited thereto, and the number of the protrusions 211 can be set according to actual needs, and can be set to one or more than three. The number of the protrusions 211 does not affect the realization of its functions.

[0088] In this embodiment, the upper end of the elastic member 201 is a free end 218, and the free end 218 is connected to one side of the upper inclined surface of the protrusion. The free end 218 can be a plate-like structure that fits the inner side of the quick-change bracket, or the free end 218 can be a plate-like structure with a certain gap between the quick-change bracket and the free end 218. The lower end of the elastic member 201 is provided with a clamping portion 219, which is used to clamp with the inner side wall of the quick-change bracket 200.

[0089] like Figure 6 As shown, the engaging portion 219 is formed to be bent toward the inner side wall of the quick-change bracket 200 of the electric vehicle. Optionally, the engaging portion 219 can be formed into a hook shape, which hooks the lower surface of the inner side wall of the quick-change bracket 200, thereby facilitating the positioning and installation of the elastic member 201 relative to the quick-change bracket 200, and further restricting the movement of the elastic member 201 relative to the quick-change bracket 200. The connection between the engaging portion 219 and the protrusion 211 is an arc surface 238. When the limiting member 101 is inserted from below the elastic member 201, the arc surface 238 facilitates the insertion of the limiting member 101, and prevents the bottom structure of the elastic member 201 from interfering with the upward movement of the limiting member 101.

[0090] In other embodiments, the engaging portion 219 may also be formed in other shapes that can engage with the inner wall of the quick-change bracket 200. Optionally, a corresponding groove or the like may be provided on the inner wall of the quick-change bracket 200 to engage with the engaging portion 219.

[0091] In another embodiment, the engaging portion 219 may be disposed at the upper end of the elastic member 201 , and the lower end of the elastic member 201 is the free end 218 .

[0092] In another embodiment, the engaging portions 219 may be disposed at both the upper and lower ends of the elastic member 201 .

[0093] Alternatively, the engaging portion 219 may not be provided, so that both the upper and lower ends of the elastic member 201 are free ends 218 .

[0094] The mounting portion 203 is provided with a mounting hole 204, and the elastic member 201 is fixed to the inner wall of the quick-change bracket 200 through a threaded member. Alternatively, the mounting portion 203 and the quick-change bracket 200 may be fixed in other ways.

[0095] like Figure 8-11 As shown, the limiting member 101 is used to cooperate with the elastic member 201 as mentioned above.

[0096] The limiting member 101 includes a positioning surface 103 and a guiding surface 104 . The positioning surface 103 is used to abut against the elastic member 201 , and the guiding surface 104 protrudes outwardly from the positioning surface 103 .

[0097] In this embodiment, the limiting member 101 includes two guide surfaces 104 , which are respectively arranged on both sides of the positioning surface 103 and extend in the vertical direction. A sliding channel 108 is formed between the guide surfaces 104 and the positioning surface 103 for the elastic member 201 to slide into.

[0098] Optionally, the limiting member 101 may further include three or more guiding surfaces 104 to facilitate guiding the elastic member 201 .

[0099] A connecting surface 105 is provided between the guide surface 104 and the positioning surface 103 . The connecting surface 105 is an arc-shaped surface to facilitate machining and to allow the guide surface 104 to smoothly extend to the positioning surface 103 .

[0100] The limiting member 101 includes a bottom wall portion 106 and side walls 107 provided on both sides of the bottom wall portion 106. The guide surfaces 104 are two opposite surfaces of the side walls 107. The two side walls 107 and the bottom wall portion 106 enclose a sliding channel 108 extending in the Z direction.

[0101] The side wall portion 107 has a lower arc surface 241 and an upper arc surface 242 at the bottom and top along the vertical direction (eg Figure 8 As shown), it is used to guide the limiting member 101 and the elastic member 201 on the quick-change bracket 200 to abut against each other for limiting, so as to facilitate the limiting member 101 to enter the gap between the battery box 100 and the quick-change bracket 200.

[0102] The bottom and top of the bottom wall portion 106 are provided with arc-shaped guide surfaces 243 , which facilitate contact with the elastic component 201 and guide it to abut against the positioning surface 103 .

[0103] The lower arc surface 241 not only forms Figure 8 The arc extending along the Y direction also forms an arc extending along the X direction. The same is true for the upper arc surface 242. By setting the edges or angles of the limiting member 101, namely the side wall portion 107 and the bottom wall portion 106, as an arc surface structure, on the one hand, it is convenient for the contact guidance between the limiting member 101 and the elastic member 201 to reduce the wear between the two. On the other hand, it is convenient for the limiting member 101 to enter the narrow space between the battery box 100 and the quick-change bracket 200, avoiding the battery box 100 and the quick-change bracket 200. The gap between the quick-change bracket 200 and the battery box 100 is prevented from being entered by the limiting member 101 due to a slight position deviation, thereby resulting in low installation efficiency of the battery box 100.

[0104] like Fig. 9As shown, the side wall portion 107 faces one side of the bottom wall portion 106, while the other side of the bottom wall portion 106 is hollowed out to reduce the weight of the limiting member 101. A gap 245 is formed between the side portion of the bottom wall portion facing the outer side wall of the battery box and the outer side wall (see Fig.13 ).

[0105] like Figure 11-13 As shown, when the quick-change battery box 100 is installed in the quick-change bracket 200 , the elastic member 201 is squeezed by the limiting member 101 and deformed.

[0106] During the movement of the limiting member 101 in the vertical direction (Z direction), the upper and lower inclined surfaces of the protrusion 211 of the elastic member 201 are used to guide the limiting member 101 and the protrusion 211 of the elastic member 201 to squeeze and limit, thereby reducing the friction and wear on the protrusion 211 during the upward and downward movement of the limiting member 101, allowing the limiting member 101 to move up and down smoothly. The engaging portion of the elastic member 201 is bent toward the direction of the quick-change bracket, which is beneficial to the upward movement of the limiting member 101 and the squeezing and limiting of the protrusion 211 of the elastic member 201, avoiding interference with the upward movement of the limiting member 101.

[0107] The left and right inclined surfaces of the elastic member 201 cooperate with the side wall portion 107 of the limiting member 101, which facilitates the elastic member to enter the limiting member.

[0108] The pre-compression dimension of the elastic member 201 is e (not shown in the figure), and the thickness of the elastic member 201 (the original thickness before deformation) is c (see Figure 7 ), the depth of the groove of the limiting member 101 is d (see Fig.11 ), where c=d+e.

[0109] The pre-compression dimension e is the compression dimension of the elastic member 201 when the quick-change battery box 100 is installed in the quick-change bracket 200 .

[0110] The value range of e is 0.4-1 mm. When e is within this range, the elastic component 201 can effectively improve the driving effect of the vehicle without affecting the battery replacement efficiency, and prevent the battery box from shaking in the Y direction relative to the quick-change bracket.

[0111] When the quick-change battery box 100 is installed in the quick-change bracket 200, the gap between the outer wall of the quick-change battery box 100 and the inner wall of the quick-change bracket 200 is K, the thickness of the limiting member 101 is F, KF is greater than 0 and less than 2, and preferably KF is equal to 1. KF within this range is convenient for controlling costs and providing installation reliability and durability. When KF is less than 1, the precision control requirements of each mating surface of the limiting member 101 and the elastic member 201 are high, and the cost is relatively high. If KF is greater than 1, the battery pack is prone to shaking when the vehicle is driving, which has an adverse effect on the reliability of installation and the durability of the battery pack.

[0112] like Fig.11 As shown, in the initial state, that is, the elastic member 201 is inserted into the limiting member 101, but no movement in the X direction occurs, the distance between the outermost edge of the side of the elastic member 201 and the guide surface 104 closest to it is the reserved gap t, the width of the elastic member 201 is a, the horizontal battery replacement stroke of the quick-change battery box 100 is s, the distance between the guide surfaces 104 is b, and b=a+2t+s.

[0113] b=a+2t+s can prevent the elastic member 201 from colliding or interfering with the side wall portion 107 of the limiting member 101 when the quick-change battery box 100 is installed on the quick-change bracket 200 and moved horizontally to the locking position.

[0114] like Fig.12 As shown, the battery box is provided with a lock shaft 111 (see Figure 2 ), a lock seat 230 is provided on the quick-change bracket 200 (see Figure 3 ), a locking groove 231 for engaging with the locking shaft 111 is defined in the lock seat 230.

[0115] like Fig.15 As shown, the locking groove 231 includes a rising section 233 and a locking section 234 , and the locking section 234 extends horizontally from the rising section 233 toward the locking direction.

[0116] The lock shaft 111 is fixed to the quick-change battery box 100. As the quick-change battery box 100 moves vertically, the lock shaft 111 moves vertically upward from the opening below the lock slot 231 into the rising section 233 of the lock slot 231, and rises vertically along the rising section 233. After the lock shaft 111 rises to a position flush with the locking section 234, the lock shaft 111 moves horizontally toward the locking position in the locking section 234 along the locking section 234 as the quick-change battery box 100 moves horizontally, until the lock shaft 111 moves to the locking position, and the lock shaft 111 is locked in the locking position of the lock slot 231, so that the quick-change battery box 100 is locked to the quick-change bracket 200. The horizontal movement distance of the lock shaft 111 from the rising section 233 to the locking position is the horizontal battery replacement stroke. Fig.14In the figure, the locking position 236 is represented by a dotted circle. In the locked state, the locking shaft 111 is at the position of the dotted circle.

[0117] When the locking shaft 111 is located in the rising section 233, the distance c between the elastic member 201 and the guide surface 104 of the limiting member 101 facing the locking direction is greater than the distance s of the locking shaft 111 moving from the rising section 233 to the locking position in the locking section 234, thereby avoiding the elastic member 201 and the side wall portion 107 of the limiting member 101 from colliding or interfering with each other due to the locking action of the quick-change battery box 100.

[0118] Below, according to Figure 16-19 The following describes how the matching relationship between the elastic member 201 and the limiting member 101 changes with the matching relationship between the lock shaft 111 and the lock seat 230 .

[0119] Figure 16-19 Four representative states from when the battery pack 100 is loaded into the quick-change bracket 200 until it is locked are sequentially illustrated.

[0120] like Fig.16 As shown, when the battery pack 100 is loaded into the quick-change bracket 200 from bottom to top, the elastic member 201 on the quick-change bracket 200 is about to be inserted into the limiting member 101 on the battery pack 100, and the lock shaft 111 has not yet been inserted into the lock groove 231 of the lock seat 230. At this time, the horizontal relative position of the limiting member 101 and the elastic member 201, that is, the relative position in the X direction, satisfies the relationship b=a+2t+s.

[0121] like Fig.17 As shown, when the battery pack 100 is relative to Fig.16 When the movement continues upward, the elastic member 201 on the quick-change bracket 200 is inserted into the limiting member 101 on the battery pack 100, and the lock shaft 111 is inserted into the rising section 233 of the lock slot 231 of the lock seat 230. At this time, the horizontal relative position of the limiting member 101 and the elastic member 201, that is, the relative position in the X direction, still satisfies the relationship b=a+2t+s.

[0122] However, in the Y direction, the elastic member 201 is compressed, and it is in a state as shown in FIG. Fig.14 In the extrusion state shown, the deformation of the elastic member 201 satisfies the formula: c=d+e. The gap between the limiting member 101 and the inner wall of the quick-change bracket 200 satisfies the relationship KF greater than 0 and less than 2. Preferably, KF is equal to 1.

[0123] like Fig.18 As shown, at this time, the battery pack 100 is relative to Fig.17 Having moved to the highest point in the vertical direction (Z direction), the lock shaft 111 reaches the highest position of the rising section 233 of the lock slot 231 , and the lock shaft 111 stops moving in the vertical direction.

[0124] The horizontal relative position of the limiting member 101 and the elastic member 201, i.e., the relative position in the X direction, still satisfies the relationship b=a+2t+s. The deformation of the elastic member 201 satisfies the formula: c=d+e. The gap between the limiting member 101 and the inner wall of the quick-change bracket 200 satisfies the relationship KF greater than 0 and less than 2, preferably, KF is equal to 1.

[0125] like Fig.19 As shown, the battery pack 100 is relatively Fig.18 The lock shaft 111 is relative to Fig.18 In the X direction, the elastic member 201 moves a distance s in the locking section 234 of the locking groove 231 and stops at the locking position 236. At the same time, the limiting member 101 moves a distance s along the X direction as the battery pack 100 moves in the X direction. Since the distances between the two side edges of the elastic member 201 and the guide surface 104 of the limiting member 101 are t and t+s respectively, and the distance t+s is set at Fig.19 The X1 direction side of the elastic member 201 in the locking shaft 111 is shortened by s as the limiting member 101 moves toward the X2 direction, so that Fig.19 In the figure, the gap on the X2 direction side of the elastic member 201 becomes t+s, and the gap on the X1 direction side becomes t, which ensures that the distance between the two side edges of the elastic member 201 and the guide surface 104 of the limiting member 101 is always greater than t during the process of installing the battery pack 100 to the quick-change bracket 200, ensuring that the elastic member 201 and the limiting member 101 will not collide or get stuck with each other, thereby hindering the mutual cooperation between the lock shaft 111 and the lock seat 230.

[0126] The X, Y, and Z directions in the figures are for the convenience of illustrating the orientations of components in different figures and therefore should not be construed as limitations on the present invention.

[0127] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship of the device or element in actual use, 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 orientation, be constructed and operated in a specific orientation at all times, and therefore cannot be understood as a limitation of the present invention in this regard.

[0128] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. An elastic member, characterized in that: The elastic member is fixed to the inner side wall of the quick-change bracket of the electric vehicle or the outer side wall of the quick-change battery box of the electric vehicle, and the elastic member is used to elastically limit the movement of the quick-change battery box in the quick-change bracket; The elastic member includes a mounting portion and a protrusion portion, wherein the mounting portion is used to mount the elastic member on the inner side wall of the quick-change bracket or the outer side wall of the quick-change battery box, and the protrusion portion extends and protrudes relative to the mounting portion in a direction away from the inner side wall of the quick-change bracket or the outer side wall of the quick-change battery box; The elastic member includes at least two protrusions distributed along the vertical direction.

2. The elastic member according to claim 1, characterized in that The protrusion has an upper inclined surface and a lower inclined surface which are arranged opposite to each other and are inclined from the protrusion end of the protrusion toward the mounting portion; or, The protrusion has a left inclined surface and a right inclined surface which are arranged opposite to each other and are inclined from the protrusion end of the protrusion toward the mounting portion. or, The mounting portion is disposed between two adjacent protrusions; or, At least one of the upper end and the lower end of the elastic member is a free end; or, The elastic member further comprises a clamping portion, which is disposed at the top or bottom of the elastic member, and the clamping portion is formed to be bent toward the inner wall of the quick-change bracket of the electric vehicle or the outer wall of the quick-change battery box of the electric vehicle; or, The elastic member is fixed to the inner side wall of the quick-change bracket or the outer side wall of the quick-change battery box of the electric vehicle through a threaded member.

3. A limiting component, characterized in that: The limiting member is used to cooperate with the elastic member according to claim 1 or 2, the elastic member is arranged on one of the inner side wall of the quick-change bracket and the outer side wall of the quick-change battery box, and the limiting member is arranged on the other of the inner side wall of the quick-change bracket and the outer side wall of the quick-change battery box; Preferably, the limiting member comprises a positioning surface and a guiding surface, the positioning surface is used to abut against the elastic member, and the guiding surface protrudes outwardly from the positioning surface; Preferably, the limiting member comprises at least two guide surfaces, which are respectively arranged on both sides of the positioning surface and extend in the vertical direction, and a sliding channel for the elastic member to slide into is formed between the guide surface and the positioning surface; Preferably, a connecting surface is provided between the guide surface and the positioning surface, and the connecting surface is an arc-shaped surface.

4. A limiting guide device, characterized in that: It comprises the elastic component according to claim 1 or 2 and the limiting component according to claim 3.

5. A quick-change bracket, characterized in that: The inner side wall of the quick-change bracket is provided with one or more elastic components as claimed in claim 1 or 2 or the limiting components as claimed in claim 3.

6. A quick-change battery box, characterized in that: The outer side wall of the quick-change battery box is provided with one or more elastic components as described in claim 1 or 2 or the limiting components as described in claim 3.

7. An electric vehicle, characterized in that: It comprises the quick-change bracket as claimed in claim 5 and the quick-change battery box as claimed in claim 6, when the elastic member is arranged in one of the quick-change bracket and the battery box, the limiting member is arranged in the other one of the quick-change bracket and the battery box.

8. The electric vehicle according to claim 7, characterized in that: When the quick-change battery box is installed in the quick-change bracket, the elastic member is squeezed by the limiting member to generate deformation; or, The pre-compression dimension of the elastic member is e, the thickness of the elastic member is c, and the depth of the limiting member groove is d, wherein c=d+e; Wherein, the pre-compression size is the compression size of the elastic component when the quick-change battery box is installed in the quick-change bracket.

9. The electric vehicle according to claim 7, characterized in that: The limiting member comprises a positioning surface and a guiding surface, wherein the positioning surface is used to abut against the elastic member, and the guiding surface protrudes outwardly from the positioning surface; The limiting member comprises at least two guide surfaces, which are respectively arranged on both sides of the positioning surface and extend in the vertical direction, and a sliding channel for the elastic member to slide into is formed between the guide surface and the positioning surface; The distance between the side of the elastic member and the guide surface is a reserved gap t, the width of the elastic member is a, the horizontal battery replacement stroke of the quick-change battery box is s, and the distance between the guide surfaces is b, b=a+2t+s; or, When the quick-change battery box is installed in the quick-change bracket, the gap between the outer wall of the quick-change battery box and the inner wall of the quick-change bracket is K, the thickness of the limiting member is F, and KF is greater than 0 and less than 2.

10. The electric vehicle according to claim 7, characterized in that: The limiting member comprises a positioning surface and a guiding surface, wherein the positioning surface is used to abut against the elastic member, and the guiding surface protrudes outwardly from the positioning surface; The limiting member comprises at least two guide surfaces, which are respectively arranged on both sides of the positioning surface and extend in the vertical direction, and a sliding channel for the elastic member to slide into is formed between the guide surface and the positioning surface; The battery box is provided with a locking shaft, the quick-change bracket is provided with a locking seat, the locking seat is provided with a locking groove for engaging with the locking shaft, the locking groove includes a rising section and a locking section, the locking section extends horizontally from the rising section toward the locking direction, when the locking shaft is located in the rising section, the distance between the elastic member and the guide surface of the limiting member facing the locking direction is greater than the distance the locking shaft moves from the rising section to the locking position in the locking section.

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