CN210133232U

CN210133232U - Electric vehicle frame and electric vehicle

Info

Publication number: CN210133232U
Application number: CN201920830587.7U
Authority: CN
Inventors: 邱冬; 刘海成; 汪友; 蔡祖杭; 王静怡
Original assignee: Beijing Didi Infinity Technology and Development Co Ltd
Current assignee: Xiamen Qiwen Technology Co.,Ltd.
Priority date: 2019-06-03
Filing date: 2019-06-03
Publication date: 2020-03-10
Anticipated expiration: 2029-06-03

Abstract

The utility model relates to an electric motor car accessory field particularly, relates to an electric motor car frame and electric motor car. The electric vehicle frame comprises a main frame rod, a vehicle seat support rod, a rear wheel connecting fork, a connecting inclined strut and a pedal shaft barrel; one end of the main frame rod, one end of the saddle support rod and one end of the rear wheel connecting fork are all connected with the outer side wall of the pedal shaft barrel, one end of the connecting inclined strut and one end of the rear wheel connecting fork, which is far away from the pedal shaft barrel, are connected, and the other end of the connecting inclined strut is connected with one end of the saddle support rod, which is far away from the pedal shaft barrel; the saddle supporting rod, the rear wheel connecting fork and the connecting inclined strut form a triangular structure together; the rear wheel connecting fork is also provided with a positioning bottom plate. The electric vehicle comprises the electric vehicle frame. The utility model discloses a saddle bracing piece, rear wheel connect the fork and connect the triangle-shaped stable structure that the bracing constitutes jointly, with the battery case setting in this triangle-shaped stable structure, need not remove the saddle and can take off and install the battery, guaranteed the stability and the life of vehicle.

Description

Electric vehicle frame and electric vehicle

Technical Field

The utility model relates to an electric motor car accessory field particularly, relates to an electric motor car frame and electric motor car.

Background

In the existing electric vehicle, the battery is generally disposed at two places, namely, under the seat and under the pedal.

When the battery sets up in the saddle below, when taking off and installing the battery at every turn, all need remove the saddle, just can install or dismantle the battery, and then can require the saddle to be movable structure. The saddle with a movable structure increases the manufacturing cost of the saddle, and causes relatively poor stability of the saddle due to the mobility of the saddle.

When the battery is arranged below the pedal, the user needs to bend down to operate when the battery is mounted or dismounted, and the human body can be stressed harder relatively.

That is to say, how to realize being convenient for promptly to install and dismantle the battery, can guarantee the stability of vehicle again is the technical problem that prior art needs to solve.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electric vehicle frame, it can connect the triangle-shaped stable structure that fork and connection bracing constitute jointly through saddle bracing piece, rear wheel, and the position of this triangle-shaped stable structure in the below of saddle, with the battery case setting in this triangle-shaped stable structure, need not remove the saddle and can take off and install the battery, has both guaranteed the stability and the life of vehicle, can be convenient for again to the installation of battery.

Another object of the utility model is to provide an electric motor car, its installation and the dismantlement of realization battery that can be comparatively convenient have still guaranteed the stability of battery case on the frame and the stability of vehicle itself simultaneously.

The embodiment of the utility model is realized like this:

in a first aspect, the utility model provides an electric vehicle frame, which comprises a main frame rod, a saddle support rod, a rear wheel connecting fork, a connecting inclined strut and a pedal shaft barrel;

one end of the main frame rod, one end of the saddle support rod and one end of the rear wheel connecting fork are connected with the outer side wall of the pedal shaft barrel, one end of the connecting inclined strut and one end of the rear wheel connecting fork, which is far away from the pedal shaft barrel, are connected, and the other end of the connecting inclined strut is connected with one end of the saddle support rod, which is far away from the pedal shaft barrel;

the saddle supporting rod, the rear wheel connecting fork and the connecting inclined strut form a triangular structure together;

and the rear wheel connecting fork is also provided with a positioning bottom plate for mounting a battery box.

Based on the first aspect, the present invention provides a first possible implementation manner of the first aspect, wherein the positioning bottom plate is fixedly disposed on the rear wheel connecting fork through a fastener.

Based on the first aspect, the utility model provides a second possible implementation of the first aspect, wherein, be provided with location structure on the location bottom plate for fix a position the mounted position of battery case.

Based on the second possible implementation manner of the first aspect, the utility model provides a third possible implementation manner of the first aspect, wherein the positioning structure is a positioning strip.

Based on the second possible implementation manner of the first aspect, the present invention provides a fourth possible implementation manner of the first aspect, wherein the positioning structure is a bottom positioning hole.

Based on the fourth possible implementation manner of the first aspect, the utility model provides a fifth possible implementation manner of the first aspect, wherein, the bottom positioning hole is a bar-shaped hole.

Based on the first aspect, the present invention provides a sixth possible implementation manner of the first aspect, wherein a positioning side plate is provided on the seat support rod, the positioning side plate is provided on the seat support rod, and the seat support rod is close to one side of the rear wheel connection fork.

Based on the sixth possible implementation manner of the first aspect, the utility model provides a seventh possible implementation manner of the first aspect, wherein, be provided with the side locating hole on the location curb plate.

Based on the first aspect, the utility model provides an eighth possible implementation of the first aspect, wherein, electric motor car frame still includes the location roof, the one end of location roof with keeping away from of saddle bracing piece the one end of footboard beam barrel is connected, the other end of location roof with it keeps away from to connect the bracing the one end of rear wheel hookup fork is connected.

Based on the eighth possible implementation manner of the first aspect, the utility model provides a ninth possible implementation manner of the first aspect, wherein, the horizontal height of the positioning top plate and the one end that the saddle supporting rod is connected is higher than the horizontal height of the positioning top plate and the one end that the connecting inclined strut is connected.

Based on the ninth possible implementation of the first aspect, the utility model provides a tenth possible implementation of the first aspect, wherein, the location roof is close to the one end of connecting the bracing is provided with the side and keeps off, the side keeps off the setting and is in the location roof is close to one side of location bottom plate, just the side keep off with the location roof is perpendicular.

Based on the eighth possible implementation manner of the first aspect, the utility model provides an eleventh possible implementation manner of the first aspect, wherein, be provided with the battery locking hole on the positioning top plate for lock the battery box on the positioning top plate.

Based on the first aspect, the utility model provides a twelfth possible implementation of the first aspect, wherein, the rear wheel yoke includes head rod and second connecting rod, the one end of head rod with the one end of second connecting rod all sets up on the footboard beam barrel, the head rod with form V type or Y type structure between the second connecting rod.

Based on the twelfth possible implementation manner of the first aspect, the utility model provides a thirteenth possible implementation manner of the first aspect, wherein, the first connecting rod with be provided with the fender tile link between the second connecting rod.

Based on the thirteenth possible implementation of the first aspect, the utility model provides a fourteenth possible implementation of the first aspect, wherein, the fender tile link includes first locating piece, second locating piece and connection frame plate, first locating piece sets up on the head rod, the second locating piece sets up on the second connecting rod, connection frame plate's both ends respectively with first locating piece with second locating piece connection, be provided with first connecting hole on the connection frame plate.

Based on the thirteenth possible implementation manner of the first aspect, the utility model provides a fifteenth possible implementation manner of the first aspect, wherein, connect the bracing and include first bracing and second bracing, the one end of first bracing with the end connection of head rod, the other end of first bracing with the saddle bracing piece is connected, the one end of second bracing with the end connection of second connecting rod, the other end of second bracing with the saddle bracing piece is connected.

Based on the first aspect, the utility model provides a sixteenth possible implementation of the first aspect, wherein, the main hack lever is kept away from the one end of a footboard beam barrel is provided with the handlebar link.

In a second aspect, the present invention further provides an electric vehicle, which includes the electric vehicle frame of any one of the above embodiments.

The embodiment of the utility model provides a beneficial effect is:

and the position of this triangle-shaped stable structure is in the below of saddle, sets up the battery case in this triangle-shaped stable structure, need not remove the saddle and can take off and install the battery, has both guaranteed the stability and the life of vehicle, can be convenient for again to the installation of battery.

The utility model has the advantages of simple structure, convenient to use, it is with low costs, the generalizability is high.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a frame of an electric vehicle according to an embodiment of the present invention;

FIG. 2 is a left side view of FIG. 1;

FIG. 3 is a top view of FIG. 1;

FIG. 4 is a perspective view of FIG. 1;

fig. 5 is a schematic structural view of a mudguard tile connecting rack on a frame of an electric vehicle provided by the embodiment of the present invention;

FIG. 6 is a side view of FIG. 5;

fig. 7 is a perspective view of fig. 5.

In the figure:

1: connecting an inclined strut; 2: positioning a top plate; 3: a seat support bar; 4: a rear wheel connecting fork; 5: a pedal shaft cylinder; 6: a main frame; 7: a handlebar attachment frame; 8: positioning the side plate; 9: a first diagonal brace; 10: a positioning bar; 11: positioning the bottom plate; 12: a first connecting rod; 13: a mudguard tile connecting rack; 14: a second connecting rod; 15: a second diagonal brace; 16: side positioning holes; 17: a battery locking hole; 18: a bottom positioning hole; 19: a first connection hole; 20: a second connection hole; 21: and a third connecting hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the present invention will be described in detail below with reference to fig. 1-7. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

The utility model provides an electric vehicle frame, which comprises a main frame 6, a saddle support rod 3, a rear wheel connecting fork 4, a connecting inclined strut 1 and a pedal shaft cylinder 5; one end of a main frame 6 rod, one end of a saddle support rod 3 and one end of a rear wheel connecting fork 4 are all connected with the outer side wall of a pedal shaft barrel 5, one end of a connecting inclined strut 1 and one end of the rear wheel connecting fork 4 far away from the pedal shaft barrel 5 are connected, and the other end of the connecting inclined strut 1 is connected with one end of the saddle support rod 3 far away from the pedal shaft barrel 5; the saddle support rod 3, the rear wheel connecting fork 4 and the connecting inclined strut 1 form a triangular structure together.

When the bicycle is used, the battery box is arranged on the rear wheel connecting fork 4 and is abutted to the bicycle seat supporting rod 3, and after the battery box is pressed by the connecting inclined strut 1, the battery box is positioned and fixed on the bicycle frame.

The battery slides and sets up in the battery box, and battery case one side is provided with the opening for the battery can follow the opening part roll-off of battery case, the dismantlement and the installation of the battery of being convenient for.

When the battery case is installed on rear wheel clevis 4, carry on spacingly to its fore-and-aft direction and upper and lower direction through saddle bracing piece 3 and connection bracing 1, simultaneously because the battery case is not circular, through rear wheel clevis 4, the triangle-shaped structure that saddle bracing piece 3 and connection bracing 1 formed, can also carry on spacingly to the rotation of battery case, and then make the battery case realize in the saddle below, location on the rear wheel clevis 4, the stability of battery case has been guaranteed, and the battery case can be opened from side, install and dismantle the battery, avoided removing the saddle, the stability of vehicle has been guaranteed.

In order to ensure the stability of the battery box when the battery box is mounted on the rear wheel fork 4, in this embodiment, a positioning bottom plate 11 is further disposed on the rear wheel fork 4 for mounting the battery box.

The up end level of location bottom plate 11 sets up, and it is fixed to give you through the fastener on the rear wheel connect fork 4 what, and is specific, through fixed the setting on rear wheel connect fork 4 of bolted connection's mode, the left side or the right side of battery case are provided with the opening, or are provided with the door structure that can open for the battery can be comparatively convenient put into in the battery case.

It should be noted that, in the present embodiment, the positioning bottom plate 11 is fixed to the rear wheel yoke 4 by bolts, but it is not limited to the bolt fixing, and it may be fixed by other fixing methods, such as welding, riveting, etc., as long as the positioning bottom plate 11 can be fixed to the rear wheel yoke 4.

In the present embodiment, in order to achieve the accuracy of the position where the battery box is provided on the positioning base plate 11, a positioning structure for positioning the mounting position of the battery box is provided on the positioning base plate 11.

Through location structure's location, can make the battery case when the installation, the suitable position on location bottom plate 11 is installed to the accuracy, can enough avoid the mounted position inaccurate and lead to the instability of battery case on the frame, need not adjust the position repeatedly again, and then can make the installation more simple swift.

Specifically, the positioning structure may be arranged in a variety of ways, such as in the present embodiment, the positioning structure may be arranged as the positioning strip 10.

More specifically, when the battery box is arranged on the positioning bottom plate 11, the positioning grooves on the battery box are matched with the positioning strips 10 on the positioning bottom plate 11, so as to realize the position positioning of the battery box.

In this embodiment, the positioning structure may be disposed in the bottom positioning hole 18.

Namely, the positioning holes are arranged on the positioning bottom plate 11, and the corresponding hole structures or the corresponding protruding structures are arranged on the battery box, so that the battery box can be matched with the positioning holes, and the position of the battery box can be positioned.

Specifically, in the present embodiment, the bottom positioning holes 18 are bar-shaped holes.

The setting in bar hole can make the battery case lie in the location structure on other positions and fix a position the back, can go on corresponding adjustment in bottom locating hole 18 for the battery case can not receive torsion or shearing force, and then guarantees the life of battery case.

In order to increase the stability of the battery box on the vehicle frame, in the embodiment, a positioning side plate 8 is arranged on the seat support rod 3, and the positioning side plate 8 is arranged on one side of the seat support rod 3 close to the rear wheel connecting fork 4.

The lateral plate 8 is positioned and is abutted against the lateral wall of the battery box, so that the connection balance between the battery box and the seat support rod 3 is ensured, and the service life of the battery box is ensured.

Specifically, in the present embodiment, the included angle formed between the positioning side plate 8 and the horizontal plane is an acute angle.

Location curb plate 8 and saddle bracing piece 3 parallel arrangement, when location curb plate 8 is the acute angle with the horizontal plane contained angle, the battery case sets up in the below of saddle, can effectually save the space of frame, has improved the space utilization of frame.

In order to ensure the positioning accuracy between the battery case and the positioning side plate 8, in the present embodiment, a side positioning hole 16 is provided in the positioning side plate 8.

The side locating hole 16 can be set as a straight hole, namely, a bolt penetrates through the side locating hole 16 and then is connected with the battery box through a nut, and the side locating hole 16 can also be set as a threaded hole and directly matched with the threaded hole through the bolt to fix the battery box.

In the present embodiment, the number of the side positioning holes 16 is plural, and the number thereof is different according to the width of the side positioning portion and the width of the battery case, and the side positioning holes are arranged in different arrangement manners, such as a matrix arrangement in which two rows are arranged.

In this embodiment, a positioning top plate 2 is further disposed on the electric vehicle frame, one end of the positioning top plate 2 is connected to one end of the seat support rod 3 away from the pedal shaft tube 5, and the other end of the positioning top plate 2 is connected to one end of the connecting inclined strut 1 away from the rear wheel connecting fork 4.

Through connecting bracing 1, can form the location to the upper portion of battery case, avoid the battery case installation back, jolt from top to bottom in the production, and through the setting of location roof 2, can increase the area of contact with the battery case, and then reduce the battery case when jolting, the impact of production reduces the destroyed probability of battery, has increased the life of battery case.

In this embodiment, the one end of roof 2 is connected with the upper end of saddle bracing piece 3, and is concrete, and the one end of roof 2 is provided with the arc wall, and the radius of arc wall is the same with the external diameter of saddle bracing piece 3 for the arc wall of roof 2 can offset with the outer wall of saddle bracing piece 3, realizes being connected with the saddle bracing piece.

Specifically, in the present embodiment, the included angle formed between the positioning top plate 2 and the horizontal plane is an acute angle, and the horizontal height of the end of the positioning top plate 2 connected to the seat support rod 3 is higher than the horizontal height of the end of the positioning top plate 2 connected to the connecting inclined strut 1.

That is, the positioning top plate 2 can limit the degree of freedom in the vertical direction of the battery box, and also can limit the degree of freedom in the front-rear direction of the battery box, thereby ensuring the stability of the battery box on the vehicle frame.

Specifically, in this embodiment, one end of the positioning top plate 2 close to the connecting inclined strut 1 is provided with a side stop, the side stop is arranged on one side of the positioning top plate 2 close to the positioning bottom plate 11, and the side stop is perpendicular to the positioning top plate 2.

Through the setting of side fender, can increase the accuracy and the stability of battery case front and back location.

The positioning top plate 2 is provided with a battery locking hole 17 for locking the battery box on the positioning top plate 2.

Still be provided with battery locking hole on location roof 2, be connected with the battery case through battery locking hole, can further increase the stability of battery case on the frame.

In another embodiment of the present invention, the rear wheel yoke 4 comprises a first connecting rod 12 and a second connecting rod 14, one end of the first connecting rod 12 and one end of the second connecting rod 14 are both disposed on the pedal shaft tube 5, and a V-shaped or Y-shaped structure is formed between the first connecting rod 12 and the second connecting rod 14.

Specifically, the rear wheel yoke 4 is divided into two parts, namely a first connecting rod 12 and a second connecting rod 14, one end of the first connecting rod 12, which is far away from the pedal shaft cylinder 5, and one end of the second connecting rod 14, which is far away from the pedal shaft cylinder 5, are respectively arranged on two sides of the rear wheel, rotating holes are respectively arranged on the first connecting rod 12 and the second connecting rod 14, and the rear wheel is rotatably connected to the first connecting rod 12 and the second connecting rod 14 after the rotating shaft of the rear wheel passes through the transmission hole.

In this embodiment, in order to avoid that the rotation of the rear wheel drives the mud and the like on the ground to rotate along with the wheel during riding, and the mud splashes around under the action of centrifugal force, the mud-blocking tile connecting frame 13 is arranged between the first connecting rod 12 and the second connecting rod 14, and the mud-blocking tile is arranged between the first connecting rod 12 and the second connecting rod 14 through the mud-blocking tile connecting frame 13.

Specifically, in this embodiment, the connecting frame 13 includes a first positioning block, a second positioning block and a connecting frame plate, the first positioning block is disposed on the first connecting rod 12, the second positioning block is disposed on the second connecting rod 14, two ends of the connecting frame plate are respectively connected to the first positioning block and the second positioning block, and a first connecting hole 19 is disposed on the connecting frame plate.

More specifically, in the present embodiment, as shown in fig. 5-7, the connecting frame plate is an inverted T-shape, and the left and right ends of the connecting frame plate are respectively connected to the first positioning block and the second positioning block, and the upper end of the connecting frame plate is provided with a first connecting hole 19 for connecting with a mud-guard tile.

More specifically, in the present embodiment, the first connecting block is connected to the first connecting rod 12 by welding, and a first through hole is provided in the first connecting block, and the second connecting block is connected to the second connecting rod 14 by welding, and a second through hole is provided in the second connecting block; the left end and the right end of the connecting frame plate are respectively provided with a second connecting hole 20 and a third connecting hole 21, and the second connecting hole 20 corresponds to the first through hole and is connected through a bolt; the third connection hole 21 corresponds to the second through hole and is connected by a bolt, thereby realizing that the connection member is disposed between the first connection rod 12 and the second connection rod 14.

More specifically, in this embodiment, the connecting frame plate is L-shaped when viewed from the side, so that the axis of the second connecting hole 20 and the axis of the third connecting hole 21 are both vertically disposed, and are conveniently connected with the first through hole and the second through hole.

The utility model discloses in, connect bracing 1 and 4 phase-matchs of rear wheel connector fork, also divide into two parts, be first bracing 9 and second bracing 15 respectively, the one end of first bracing 9 and the end connection of head rod 12, the other end and the saddle bracing piece 3 of first bracing 9 are connected, the one end of second bracing 15 and the end connection of second connecting rod 14, the other end and the saddle bracing piece 3 of second bracing 15 are connected.

Specifically, one end of the first inclined strut 9 is connected with the end of the first connecting rod 12 through a bolt, and one end of the second inclined strut 15 is connected with the end of the second connecting rod 14 through a bolt; the other end of first bracing 9 and the one end fixed connection of location roof 2, the other end of second bracing 15 also with the one end fixed connection of location roof 2, specific fixed connection mode can have a great variety, if can be welding, also can be the riveting, or bolted connection etc. it as long as can be with first bracing 9, second bracing 15 fixed connection on location roof 2 can.

The utility model discloses in, the one end that footboard beam barrel 5 was kept away from to 6 poles of body frame is provided with handlebar link 7.

The handlebar, the front wheel support and other relevant accessories on the handlebar are connected through the handlebar connecting frame 7, and then the complete electric vehicle is formed.

Specifically, handlebar link 7 is the tubular structure, and the handlebar connecting rod rotates and sets up on handlebar link 7, and the upper end of handlebar connecting rod sets up the handlebar, constitutes T shape jointly with the handlebar connecting rod, and the lower extreme and the front wheel of handlebar connecting rod are connected.

The utility model also provides an electric vehicle, its electric vehicle frame that includes above-mentioned arbitrary item.

The embodiment of the utility model provides a beneficial effect is:

through the triangle-shaped stable structure that saddle bracing piece 3, rear wheel chain stay 4 and connection bracing 1 constitute jointly, set up the battery case in the saddle below, and leave the degree of freedom that can remove in the left and right directions of saddle below for battery in the battery case can take out and install in one side of saddle below, has both guaranteed the stability and the life of vehicle, can be convenient for again to the installation of battery.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An electric vehicle frame is characterized by comprising a main frame rod, a vehicle seat support rod, a rear wheel connecting fork, a connecting inclined strut and a pedal shaft barrel;

one end of the main frame rod, one end of the saddle support rod and one end of the rear wheel connecting fork are connected with the outer side wall of the pedal shaft barrel, one end of the connecting inclined strut is connected with one end, far away from the pedal shaft barrel, of the rear wheel connecting fork, and the other end of the connecting inclined strut is connected with one end, far away from the pedal shaft barrel, of the saddle support rod;

the saddle support rod, the rear wheel connecting fork and the connecting inclined strut form a triangular structure together, and are used for installing a battery box and positioning the battery box in the triangular structure;

2. The electric vehicle frame of claim 1, wherein the positioning base plate is fixedly disposed on the rear wheel clevis by a fastener.

3. The electric vehicle frame as claimed in claim 1, wherein the positioning bottom plate is provided with a positioning structure for positioning the mounting position of the battery box.

4. The electric vehicle frame of claim 3, wherein the locating structure is a locating bar.

5. The electric vehicle frame of claim 3, wherein the locating structure is a bottom locating hole.

6. The frame for an electric vehicle as claimed in claim 5, wherein the bottom positioning holes are strip-shaped holes.

7. The electric vehicle frame as claimed in claim 1, wherein a positioning side plate is provided on the seat support bar, the positioning side plate being provided on a side of the seat support bar near the rear wheel clevis.

8. The electric vehicle frame as claimed in claim 7, wherein the positioning side plate is provided with a side positioning hole.

9. The electric vehicle frame of claim 1, further comprising a positioning top plate, wherein one end of the positioning top plate is connected with one end of the seat support rod far away from the pedal shaft barrel, and the other end of the positioning top plate is connected with one end of the connecting inclined strut far away from the rear wheel connecting fork.

10. The electric vehicle frame as claimed in claim 9, wherein the horizontal height of the end of the positioning top plate connected to the seat support rod is higher than the horizontal height of the end of the positioning top plate connected to the connecting diagonal brace.

11. The electric vehicle frame as claimed in claim 10, wherein a side stop is provided at an end of the positioning top plate close to the connecting diagonal brace, the side stop is provided at a side of the positioning top plate close to the positioning bottom plate, and the side stop is perpendicular to the positioning top plate.

12. The electric vehicle frame as claimed in claim 9, wherein the locating top plate is provided with a battery locking hole for locking the battery box on the locating top plate.

13. The electric vehicle frame of claim 1, wherein the rear wheel yoke comprises a first connecting rod and a second connecting rod, one end of the first connecting rod and one end of the second connecting rod are both disposed on the pedal shaft barrel, and a V-shaped or Y-shaped structure is formed between the first connecting rod and the second connecting rod.

14. The electric vehicle frame of claim 13, wherein a fender tile attachment bracket is disposed between the first and second connecting rods.

15. The frame for electric vehicle according to claim 14, wherein the fender tile connecting bracket comprises a first positioning block, a second positioning block and a connecting frame plate, the first positioning block is disposed on the first connecting rod, the second positioning block is disposed on the second connecting rod, two ends of the connecting frame plate are respectively connected with the first positioning block and the second positioning block, and a first connecting hole is disposed on the connecting frame plate.

16. The electric vehicle frame of claim 13, wherein the connection brace comprises a first brace and a second brace, one end of the first brace being connected to an end of the first connecting rod, the other end of the first brace being connected to the seat support rod, one end of the second brace being connected to an end of the second connecting rod, the other end of the second brace being connected to the seat support rod.

17. The electric vehicle frame as claimed in claim 1, wherein a handlebar connecting frame is provided at an end of the main frame rod remote from the pedal axle cylinder for connecting a handlebar.

18. An electric vehicle comprising an electric vehicle frame as claimed in any one of claims 1 to 17.