Patent Application
20230294548
The invention relates to the field of electric vehicles, in particular to an elastic member, a limiting member, a limiting guide device and an electric vehicle comprising the same.
At present, the emission of vehicle exhaust is still an important factor in environmental pollution. In order to control vehicle exhaust, people have developed natural vehicles, hydrogen fuel vehicles, solar vehicles and electric vehicles to replace fuel vehicles.
One of the most promising applications is electric vehicles.
Current electric vehicles mainly include two types: direct charge type and quick change type.
Quick-change electric vehicles do not need to be charged for a long time. After the battery is exhausted, the electric vehicle can continue driving by quickly replacing the battery pack, which is more suitable for public transportation.
There are currently two commonly used ways to replace the battery of a quick-change electric vehicle, 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 install it from the bottom of the electric vehicle. Push the quick-change battery box into the quick-change bracket from bottom to top, and fix it with the quick-change bracket.
For the latter installation method, when the quick-change battery box is assembled with the quick-change bracket from bottom to top, precise positioning is required to avoid installation failure. However, even if the quick-change battery box and the quick-change bracket are precisely positioned Positioning, in the actual installation process, a small amount of deviation cannot be avoided 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 loading process, resulting in quick-change battery box damage.
In addition, although the quick-change battery box and the quick-change bracket are installed, the quick-change battery box and the quick-change bracket will be positioned using sensors, but when the quick-change battery box is installed in the quick-change bracket, positioning is still required. The guide mechanically guides the insertion of the quick-change battery box into the quick-change bracket.
The technical problem to be solved by the present invention is to provide an elastic member, a limiting member, a limiting guide device and an electric vehicle including the same in order to overcome the above-mentioned defects of the prior art.
The present invention solves the above technical problems through the following technical solutions:
An elastic member, the elastic member is fixed on 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 for elastically limiting the movement of the quick-change battery box in the quick-change bracket move.
The technical effect of the solution is that 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.
Preferably, the elastic member includes a mounting portion and a protrusion, 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 is opposite to the The installation portion protrudes toward 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 technical effect of this further proposal is that the elastic member realizes its elastic cushioning function through the protrusion, and the cushioning is more reliable.
Preferably, the protruding portion has an upper inclined surface and a lower inclined surface that are arranged obliquely from the protruding end of the protruding portion toward the mounting portion.
The technical effect of this further development is that better elasticity and guidance are achieved by the inclined surface.
Preferably, the protruding part has a left inclined surface and a right inclined surface which are arranged obliquely from the protruding end of the protruding part toward the installation part.
The technical effect of this further development is that better elasticity and guidance are achieved by the inclined surface.
Preferably, the elastic member includes at least two of the protrusions distributed along the vertical direction.
The technical effect of this further solution is that by providing a plurality of protrusions, the elasticity thereof can be better ensured.
Preferably, the mounting portion is disposed between two adjacent protrusions.
The technical effect of this further solution is that the structure is simplified and the installation is easy by arranging the installation part between the protrusions.
Preferably, at least one of the upper end and the lower end of the elastic member is a free end.
The technical effect of this further solution is that overpositioning of the elastic member is avoided.
Preferably, the elastic member further includes an engaging portion, the engaging portion is provided on the top or bottom of the elastic member, and the engaging portion is used for connecting with the inner side wall of the quick-change bracket or the quick-change battery of the electric vehicle. The outer side walls of the box are snapped together.
The technical effect of this further solution is: the installation and positioning of the elastic member is facilitated by the engaging portion.
Preferably, the engaging portion is formed to bend toward 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.
The technical effect of this further solution is to provide a better snap-fit form.
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.
The technical effect of this further solution is: it is convenient to fix the elastic member.
A limiting member, the limiting member is used to cooperate with the above-mentioned elastic member, 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, the limiting The component is disposed on the other of the inner side wall of the quick change bracket and the outer side wall of the quick change battery box.
The technical effect of the solution is: elastically restricting the movement of the quick-change battery box in the quick-change bracket, thereby avoiding damage to the battery box.
Preferably, the limiting member includes a positioning surface and a guiding surface, the positioning surface is used to abut against the elastic member, and the guiding surface extends outward from the positioning surface.
The technical effect of this further solution is that the elastic member is facilitated to be guided via the guide surface.
Preferably, the limiting member includes at least two guiding surfaces, the two guiding surfaces are respectively arranged opposite to the two sides of the positioning surface, and extend along the vertical direction, between the guiding surface and the positioning surface A sliding passage for the elastic member to slide into is formed between them.
The technical effect of this further solution is that it is further convenient to guide the elastic member through the guide surface.
Preferably, a connection surface is provided between the guide surface and the positioning surface, and the connection surface is an arc-shaped surface.
The technical effect of this further solution is: easy manufacture.
A position-limiting guide device, which includes the above-mentioned elastic member and the above-mentioned position-limiting member.
The technical effect of the solution is: elastically limit and guide the movement of the quick-change battery box in the quick-change bracket, thereby avoiding damage to the battery box.
A quick-change bracket, the inner wall of the quick-change bracket is provided with one or more elastic members or limiting members as described above.
A quick-change battery box, the outer wall of the quick-change battery box is provided with one or more elastic members as described above or the limiting member as described above.
An electric vehicle, which includes the above-mentioned quick-change bracket and the above-mentioned quick-change battery box, when the elastic member is arranged on one of the quick-change bracket and the battery box, the position-limiting A component is provided on the other of the quick change bracket and the battery box.
Preferably, when the quick-change battery box is loaded into the quick-change bracket, the elastic member is compressed by the limiting member to deform.
The technical effect of this further solution is: the elastic limitation between the quick-change battery box and the quick-change bracket is realized through the deformation of the elastic member.
Preferably, the pre-compressed dimension of the elastic member is e, the thickness of the elastic member is c, and the groove depth of the limiting member is d, wherein c=d+e.
Wherein, the pre-compressed size is the compressed size of the elastic member when the quick-change battery box is loaded into the quick-change bracket.
Preferably, 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 replacement stroke of the quick-change battery box is s, and the The distance between the guide surfaces is b, where b=a+2t+s.
The technical effect of this further solution is: b=a+2t+s can prevent the quick-change battery box 100 from being installed on the quick-change bracket 200 and locked horizontally, the elastic member 201 and the side wall portion 107 of the limiting member 101 collision or interference.
Preferably, when the quick-change battery box is loaded into the quick-change bracket, the gap between the outer sidewall of the quick-change battery box and the inner sidewall of the quick-change bracket is K, and the limit member Thickness is F, K−F is greater than 0 and less than 2.
The technical effect of this further solution is to reserve a gap between the quick-change battery box and the limiting member to avoid collision and interference.
Preferably, the battery box is provided with a lock shaft, the quick-change bracket is provided with a lock seat, and the lock seat is provided with a lock groove for engaging with the lock shaft, and the lock groove includes a rising section and a A locking section, the locking section extends horizontally from the ascending section toward the locking direction, when the lock shaft is located in the ascending section, the elastic member and the limiting member face the locking direction The distance of the guide surface is greater than the distance that the lock shaft moves from the ascending section to the locked position in the locking section.
The technical effect of this further solution is to prevent the elastic member from colliding or interfering with the side wall of the limiting member when the quick-change battery box is mounted on the quick-change bracket and locked horizontally.
The positive progressive effect of the present invention is that the elastic member can elastically limit the movement of the battery box in the quick-change bracket, thereby avoiding damage to the battery box.
The limiting member, the limiting guide, the quick-change bracket, the quick-change battery box and the electric vehicle have the same effect as above.
Explanation of reference signs:
The present invention will be further described by means of embodiments below in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the embodiments.
This embodiment provides a kind of electric vehicle, and this electric vehicle removes the old battery that has been used up on it (power exhausted or power consumption to a certain extent), and fully charged or partially charged (has been charged to can be used) The degree) of the new battery is installed on the electric vehicle, and realizes battery life.
The electric vehicle includes a quick-change battery box 100 shown in
As shown in
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 above is realized.
The quick-change battery box 100 in this application refers to a replaceable battery formed in the form of a battery pack, not necessarily a box-type structure.
The quick-change battery box 100 and the quick-change bracket 200 are limited and guided in X, Y, and Z directions by means of a position-limiting guide device.
The limiting guide device includes an elastic member 201 and a limiting member 101.
As shown in
In other embodiments, it can also be set as follows: the limiting member 101 is arranged on the inner wall of the quick-change bracket 200, and the elastic member 201 is arranged on the outer wall of the quick-change battery box 100.
As shown in
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 faces away from the inner side wall of the quick change bracket 200 relative to the mounting portion 203. Extend the bump.
A groove is formed on the side of the protrusion 211 facing the quick change bracket 200. When the elastic member 201 is mounted on the quick change bracket 200, there is a gap defined by the groove between the protrusion 211 and the inner side of the quick change bracket 200.
When the battery box is installed in the quick-change bracket, the protrusion deforms toward the inner side wall of the quick-change bracket.
The protruding part 211 has an upper inclined surface 212 and a lower inclined surface 213 which are oppositely disposed from the protruding end of the protruding part 211 to the installation part 203.
The protruding portion 211 also has a left inclined surface 214 and a right inclined surface 215 oppositely disposed from the protruding end of the protruding portion 211 toward the installation portion 203.
These inclined surfaces make the protruding portion 211 have better elasticity and better guiding.
The directions of these inclined surfaces only refer to their relative directions, not that they must be placed on the left, right or up and down of the viewer.
By setting up and down inclined surfaces and left and right inclined surfaces on the protruding part 211, when the battery box is installed on the quick-change bracket, the contact and guidance between the elastic member and the limiting member are facilitated, and the friction during the relative movement between the two is reduced. Resistance, improve the efficiency of battery box loading and unloading.
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 protruding portions 211.
By providing a plurality of protrusions 211, the elasticity thereof can be better ensured.
However, the present invention is not limited thereto. The number of protrusions 211 can be set according to actual needs, one or more than three, and the number of protrusions 211 does not affect the realization of its functions.
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 may be a plate-shaped structure that is attached to the inner surface of the quick-change bracket, or the free end 218 may be a plate-shaped structure that has a certain gap with the quick-change bracket.
The lower end of the elastic member 201 is provided with an engaging portion 219 for engaging with an inner side wall of the quick change bracket 200.
As shown in
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 relative movement of the elastic member 201. Movement of the quick change bracket 200.
The joint between the engaging portion 219 and the protruding portion 211 is an arc surface 238. When the position limiting member 101 snaps in from below the elastic member 201, the arc surface 238 facilitates the locking of the position limiting member 101 and prevents the bottom structure of the elastic member 201 from Interference with the upward movement of the stop member 10.
In other embodiments, the engaging portion 219 may also form other shapes capable of engaging with the inner sidewall of the quick change bracket 200.
Optionally, a corresponding groove or the like may be provided on the inner sidewall of the quick change bracket 200 to engage with the engaging portion 219.
In another embodiment, the engaging portion 219 may be disposed on the upper end of the elastic member 201, and the lower end of the elastic member 201 is the free end 218.
In yet another embodiment, the upper and lower ends of the elastic member 201 can be provided with engaging portions 219.
Optionally, the engaging portion 219 may not be provided, so that the upper and lower ends of the elastic member 201 are both free ends 218.
The mounting portion 203 is provided with a mounting hole 204, and the elastic member 201 is fixed to the inner side wall of the quick change bracket 200 through a threaded member.
Optionally, other ways can also be used to fix the installation part 203 and the quick change bracket 200.
As shown in
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.
In this embodiment, the limiting member 101 includes two guide surfaces 104, the two guide surfaces 104 are respectively arranged opposite to the two sides of the positioning surface 103, and extend along the vertical direction. The sliding channel 108 for the elastic member 201 to slide into.
Optionally, the limiting member 101 may also include more than three guiding surfaces 104 to facilitate the guiding of the elastic member 201.
A connecting surface 105 is provided between the guiding surface 104 and the positioning surface 103. The connecting surface 105 is an arc-shaped surface to facilitate processing and make the guiding surface 104 extend to the positioning surface 103 smoothly.
The limiting member 101 includes a bottom wall portion 106 and side wall portions 107 disposed on two sides of the bottom wall portion 106, and the guide surfaces 104 are two opposite surfaces of the side wall portion 107.
The two side wall portions 107 and the bottom wall portion 106 enclose a slide channel 108 extending in the Z direction.
The bottom and top of the side wall portion 107 along the vertical direction are provided with a lower arc surface 241 and an upper arc surface 242 (as shown in
The bottom and the top of the bottom wall portion 106 are provided with arc-shaped guiding surfaces 243 to facilitate mutual contact with the elastic member 201 and guide it to abut against the positioning surface 103.
The lower arc surface 241 not only forms an arc extending along the Y direction in
The same is true for the upper arc 242.
By setting each edge or angle of the limiting member 101, that is, the side wall portion 107 and the bottom wall portion 106, as an arc structure, on the one hand, it facilitates the contact and guidance between the limiting member 101 and the elastic member 201, and reduces the gap between the two. On the other hand, it is convenient for the limit member 101 to enter the narrow space between the battery box 100 and the quick change bracket 200, so as to prevent the limit member 101 from being unable to enter the quick change bracket 200 due to a small position deviation. Change the gap between the bracket 200 and the battery box 100, resulting in low installation efficiency of the battery box 100.
As shown in
A gap 245 is formed between a portion of the bottom wall facing the outer wall of the battery box and the outer wall (see
As shown in
During the movement of the limiting member 101 in the vertical direction (Z direction), the upper and lower slopes 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 anti limit, reducing the limit. The friction and wear of the protrusion 211 during the up and down movement of the position member 101 makes the position limit member 101 move up and down smoothly, and the engaging part of the elastic member 201 is bent toward the direction of the quick change bracket, which facilitates the upward movement of the position limit member 101 and the elastic member 201 The protruding portion 211 squeezes the limit to avoid interfering with the upward movement of the limit member 101.
The left and right inclined surfaces of the elastic member 201 cooperate with the side wall portion 107 of the limiting member 101 to facilitate the elastic member to enter into the limiting member.
The pre-compressed size of the elastic member 201 is e (not shown in the figure), the thickness of the elastic member 201 (original thickness before deformation) is c (see
The pre-compressed dimension e is the compressed dimension of the elastic member 201 when the quick-change battery box 100 is loaded into the quick-change bracket 200.
The value range of e is 0.4-1 mm.
When e is within this range, the elastic member 201 can effectively improve the driving effect of the vehicle without affecting the efficiency of the battery exchange, and avoid Y-direction shaking of the battery box relative to the quick-change bracket.
When the quick-change battery box 100 is loaded into the quick-change bracket 200, the gap between the outer sidewall of the quick-change battery box 100 and the inner sidewall of the quick-change bracket 200 is K, the thickness of the limiting member 101 is F, and K−F is greater than 0 and Less than 2, preferably K−F is equal to 1.
K−F in this range facilitates cost control as well as providing reliability and durability of installation.
When K−F is less than 1, the precision control requirements of each mating surface of the limiting member 101 and the elastic member 201 are relatively high, and the cost is high. If K−F is greater than 1, the battery pack is likely to shake when the vehicle is running, which affects the reliability of installation. And the durability of the battery pack is adversely affected.
As shown in
b=a+2t+s can prevent the elastic member 201 from colliding or interfering with the side wall 107 of the limiting member 101 when the quick-change battery box 100 is mounted on the quick-change bracket 200 and moved horizontally to the locking position.
As shown in
As shown in
The lock shaft 111 is fixed to the quick-change battery box 100. With the vertical movement of the quick-change battery box 100, the lock shaft 111 enters the rising section 233 of the lock groove 231 vertically from the opening below the lock groove 231, and moves 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 along the locking section 234 with the horizontal movement of the quick-change battery box 100 toward the The locking position moves until the locking shaft 111 moves to the locking position, and the locking shaft 111 is locked in the locking position of the locking groove 231, so that the quick-change battery box 100 is locked on the quick-change bracket 200.
The horizontal movement distance of the lock shaft 111 from the ascending section 233 to the locking position is the horizontal power exchange stroke.
In
When the lock shaft 111 is located in the ascending 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 time when the lock shaft 111 moves from the ascending section 233 to the locking position in the locking section 234. distance s, so as to avoid collision or interference between the elastic member 201 and the side wall portion 107 of the limiting member 101 due to the locking action of the quick-change battery box 100.
Hereinafter, according to
16-19 sequentially illustrate four representative states from when the battery pack 100 is loaded into the quick-change bracket 200 until it is locked.
As shown in
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.
As shown in
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.
But in the Y direction, the elastic member 201 is extruded, and it is in the extruded state as shown in
The gap between the limiting member 101 and the inner sidewall of the quick change bracket 200 satisfies the relationship K−F greater than 0 and less than 2, preferably, K−F is equal to 1.
As shown in
The horizontal relative position of the limiting member 101 and the elastic member 201 is, the relative position in the X direction still satisfies the relationship b=a+2t+s.
The deformation amount of the elastic member 201 satisfies the formula: c=d+e,
The gap between the limiting member 101 and the inner sidewall of the quick change bracket 200 satisfies the relationship K−F greater than 0 and less than 2, preferably, K−F is equal to 1.
As shown in
The locking shaft 111 moves a distance s in the locking section 234 of the locking groove 231 in the X direction relative to
At the same time, the limiting member 101 moves a distance s along the X direction along with the displacement of the battery pack 100 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 respectively t and t+s, and the distance t+s is set on the X1 direction side of the elastic member 201 in FIG. In
The X, Y, and Z directions in the figure are for the convenience of illustrating the orientation of components in different figures, and therefore, should not be construed as limiting the present invention.
In describing the present invention, it is to be understood that the terms “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”. The orientation or positional relationship indicated by “bottom”, “inner” and “outer” are based on the orientation or positional 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 Any device or element must at all times have a specific orientation, be constructed and operate in a specific orientation and therefore should not be construed as limiting the invention in this respect.
Although the specific implementation of the present invention has been described above, those skilled in the art should understand that this is only an example, and the protection scope of the present invention is defined by the appended claims.
Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202010795071.0 | Aug 2020 | CN | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2021/110497 | 8/4/2021 | WO |
