CN217691467U

CN217691467U - Battery box connecting device for electric automobile

Info

Publication number: CN217691467U
Application number: CN202221422265.7U
Authority: CN
Inventors: 石立新
Original assignee: Henan Huanling Energy Technology Co ltd
Current assignee: Henan Huanling Energy Technology Co ltd
Priority date: 2022-06-08
Filing date: 2022-06-08
Publication date: 2022-10-28
Anticipated expiration: 2032-06-08

Abstract

The utility model provides a battery box connecting device for electric automobile, which comprises a main body, a locking nut component and a positioning pin, wherein the main body comprises a plurality of groups of first connecting supports and second connecting supports which are arranged oppositely in pairs, the bottom ends of the connecting supports are provided with baffle plates which are bent upwards, longitudinal reinforcing ribs are arranged at two sides of the connecting supports, the edge of the baffle plate is provided with transverse reinforcing ribs, and the transverse reinforcing ribs are connected with the longitudinal reinforcing ribs and form a semi-closed cavity with the bottom plane; the locking nut assembly comprises a floating nut and a nut cover, and a central threaded through hole is formed in the bottom of the floating nut; two ends of the bottom of the nut cover are fixedly connected with the bottom plane, and the floating nut is arranged between the nut cover and the bottom plane in a floating mode; the locating pin is fixed in on two first linking bridge that diagonal set up. The utility model has the advantages of reasonable design, the loading and unloading of being convenient for has effectively increased the area of contact of this device top and automobile body, but also can satisfy the vehicle and make the battery box more firm with being connected of automobile body under extreme road conditions.

Description

Battery box connecting device for electric automobile

Technical Field

The utility model belongs to the technical field of electric automobile trades the electricity, concretely relates to battery box connecting device for electric automobile.

Background

With the development of electric vehicles, the power compensation efficiency of electric vehicle batteries is a concern in the industry. For the compensation efficiency, the battery replacement mode has more advantages aiming at the public field with relatively uniform vehicle model specifications.

At present, the problems of complex locking action, high positioning requirement, low reliability and the like exist in the battery replacement process. Because of the need for frequent disassembly, the connecting device for the battery box and the vehicle body is often easily damaged, which affects the service life of the connecting device. In addition, when the vehicle jolts and collides in extreme road conditions, the connecting device of the battery box and the vehicle body is easy to loosen or slip, so that great potential safety hazards exist.

Therefore, the reliable fixed of battery box and automobile body needs constantly to be strengthened, designs one kind and can effectively solve the reliable fixed of battery box and automobile body, effectively solves under the complicated road conditions the reliability of battery box and automobile body and is connected to can adapt to the connecting device who frequently dismantles the operating mode requirement of using very necessary.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a battery box connecting device for electric automobile is connected with automobile body and battery box through multiunit linking bridge to set up many strengthening ribs on linking bridge, strengthened connecting device's support intensity, the atress that makes every fixed point is even, and satisfies minimum yield strength requirement, has optimized on overall structure, makes the utility model has the advantages of reasonable design, the loading and unloading of being convenient for have effectively increased the area of contact of this device top plane and automobile body girder moreover, and can also satisfy the vehicle jolt in extreme road conditions and make the battery box more firm with being connected of automobile body under the collision condition.

The utility model discloses a realize through following technical scheme:

a battery box connecting device for an electric automobile comprises a main body, a locking nut assembly and a positioning pin, wherein the main body comprises a first connecting support and a second connecting support, the first connecting support and the second connecting support are arranged in a pairwise opposite mode, and two groups of the second connecting supports are arranged between the two groups of the first connecting supports; the first connecting support is Z-shaped, the second connecting support is T-shaped, the bottom ends of the two connecting supports are respectively provided with an upward bent baffle, the edges of two sides of the first connecting support and the second connecting support are respectively provided with a longitudinal reinforcing rib, the edge of the top end of each baffle is provided with a transverse reinforcing rib, and the transverse reinforcing ribs are connected with the longitudinal reinforcing ribs on two sides and form a semi-closed cavity with the bottom plane of the connecting supports; the locking nut assembly is arranged in the semi-closed cavity of the first connecting piece and the semi-closed cavity of the second connecting piece, the locking nut assembly comprises a floating nut and a nut cover, the floating nut and the nut cover are both of a cubic structure, and the bottom of the floating nut is provided with a central threaded through hole; the nut cover is arranged on the floating nut, two ends of the bottom of the nut cover are fixedly connected with the bottom plane of the connecting support, and the floating nut is placed between the nut cover and the bottom plane of the connecting support in a floating mode; the positioning pins are fixed on the bottom planes of the two first connecting supports which are arranged diagonally.

Preferably, a plurality of bolt positioning holes are formed in the top plane of the first connecting support and are fixedly connected with the vehicle body by means of fixing bolts, and the bolt positioning holes with the same diameter are arranged in a nonlinear manner; a positioning pin mounting hole, a nut cover mounting hole, a locking bolt hole and a nut cover mounting hole are sequentially formed in the bottom plane of the first connecting support; the two sides of the second connecting support are provided with lugs, bolt positioning holes are formed in the lugs and are fixedly connected with the vehicle body through fixing bolts, the bolt positioning holes are symmetrically arranged, and positioning pin mounting holes, nut cover mounting holes, locking bolt holes and nut cover mounting holes are sequentially formed in the bottom of the second connecting support.

Preferably, the bottom of locating pin is conical structure, the middle part of locating pin is the cylinder, just the both sides of cylinder are provided with the breach that is parallel to each other, the upper end of locating pin with the bottom plane of first linking bridge is with the help of fixation nut threaded connection, be provided with spring washer and plain washer between fixation nut and the bottom plane.

Preferably, the locking bolt hole, the nut cover mounting hole, the positioning pin mounting hole and the central threaded through hole are all through holes, and the lower parts of the through holes are provided with chamfers.

Preferably, the nut cover is of a structure shaped like a Chinese character 'ji', connecting through holes are formed in two ends of the bottom of the nut cover, and fixing nuts are arranged at the connecting through holes; the two fixing nuts are respectively corresponding to the nut cover mounting holes on the first connecting bracket and the second connecting bracket and are in threaded connection with the fixing nuts by means of countersunk screws.

Preferably, the central threaded through hole of the floating nut corresponds to the position of the locking bolt hole.

Preferably, the conical structure of the positioning pin is matched with the positioning hole on the battery box.

Preferably, each set of the first connecting bracket, the second connecting bracket and the adjacent first connecting bracket and second connecting bracket are oppositely oriented.

Preferably, a back reinforcing rib is arranged at the middle position of the back surface of the first connecting bracket.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses a multiunit linking bridge is connected with the automobile body, and the gravity of dispersion battery box makes every fixed point atress even, and can satisfy minimum yield strength requirement.

2. The utility model discloses a linking bridge self light in weight can reduce whole car dead weight to can set up many strengthening ribs according to the weight of battery box, increase the bulk strength of this device.

3. The utility model discloses a die-casting of inhomogeneous thickness is adopted at linking bridge's top, has increased the thickness of bolt locating hole department, has increased the intensity of design to the place that stress is the biggest, can satisfy the vehicle jolt in extreme road conditions and connect more firmly under the condition of collision.

4. The utility model discloses the floating nut that sets up on every linking bridge can be convenient for be connected with the locking mechanism of battery box, and the floating space that floating nut reserved in the nut lid, and freely adjust in certain extent when the locking bolt of being convenient for is fixed with floating nut, has avoided because the angle is not to the condition that leads to connecting device to damage when screwing up because of the locking bolt.

5. The utility model discloses a locating pin setting has effectually carried out spacing fixed to the battery box from two positions on oblique diagonal angle sets up two first linking bridge for the battery box can not remove at vehicle operation in-process, thereby has avoided the condition that locking bolt and nut damaged because of receiving stress.

Drawings

Fig. 1 is an exploded view of a mounting structure of a first connecting bracket;

FIG. 2 is a front view of the first linking bracket;

FIG. 3 is a schematic view of a back structure of the first connecting bracket;

fig. 4 is a side view of a first linking bracket of the present invention;

fig. 5 is a sectional view of the connection of the positioning pin and the first connecting bracket of the present invention;

fig. 6 is a sectional view showing the installation of the lock nut and the nut cap according to the present invention;

FIG. 7 is a front view of the intermediate connecting bracket of the present invention;

fig. 8 is a schematic structural view of the back side of the second connecting bracket of the present invention;

fig. 9 is a side view of a second linking bracket of the present invention;

fig. 10 is a schematic structural view of the nut cover of the present invention;

fig. 11 is a schematic structural view of the positioning pin of the present invention;

fig. 12 is a perspective view of the entire coupling mechanism of the present invention.

The notation in the figure is:

the connecting device comprises a first connecting bracket 1, a bolt positioning hole 11, a baffle plate 12, a longitudinal reinforcing rib 13, a transverse reinforcing rib 14, a bottom plane 15 of the first connecting bracket, a positioning pin mounting hole 17, a nut cover mounting hole 18, a locking bolt hole 19, a second connecting bracket 2, a bolt positioning hole 21, a baffle plate 22, a longitudinal reinforcing rib 23, a transverse reinforcing rib 24, a bottom plane 25 of the second connecting bracket, a hanging lug 26, a nut cover mounting hole 28, a locking bolt hole 29, a floating nut 3, a central threaded through hole 31, a nut cover 4, a connecting through hole 41, a fixing nut 42, a countersunk head screw 43, a positioning pin 5, a conical structure 51, a cylinder 52, a notch 53, a fixing nut 54, a spring washer 55, a flat washer 56, a back reinforcing rib 6 and a vehicle body 7.

Detailed Description

Hereinafter, exemplary embodiments and features of the present invention will be described in detail with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. Although various aspects of the embodiments are illustrated in the drawings in which like reference numerals indicate functionally similar or analogous elements, the drawings are not necessarily drawn to scale unless otherwise specified.

The utility model discloses a battery box connecting device for electric automobile for realize that electric automobile trades the electricity operation, as shown in fig. 1 to fig. 12, it includes main part, locking nut subassembly and locating pin 5, main part and 7 fixed connection of automobile body, locking nut subassembly and the locking mechanism meshing on the battery box, the locking nut subassembly is fixed in the bottom of main part, and the locating pin is fixed in the bottom of main part, and with the locating hole phase-match on the battery box.

In the preferred embodiment, as shown in fig. 12, the main body may be a cast aluminum hanger, which includes four first connecting brackets 1 and four second connecting brackets 2 arranged in combination, the first connecting brackets 1 and the second connecting brackets 2 are arranged opposite to each other in pairs, and two sets of the second connecting brackets 2 are arranged between two sets of the first connecting brackets 1.

As shown in fig. 1-4, the first connecting bracket 1 is Z-shaped, so that reinforcing ribs can be conveniently additionally arranged on two sides. The bottom of first linking bridge 1 is provided with the baffle 12 of upwards bending, the both sides at the front and the back of first linking bridge 1 all are provided with vertical strengthening rib 13, the edge of baffle 12 is provided with a horizontal strengthening rib 14, horizontal strengthening rib 14 links to each other with the vertical strengthening rib 13 that is located first linking bridge 1 both sides, and form half closed cavity with the bottom plane 15 of first linking bridge 1, when the restriction lock nut assembly's home range, increase the holistic intensity of device. A back reinforcing rib 6 is arranged at the middle position of the back of the first connecting bracket 1 and is used for enhancing the supporting strength of the device.

In the preferred embodiment, the top plane of the first connecting bracket 1 is provided with three bolt positioning holes 11, and the bolt positioning holes 11 have the same diameter and are arranged in a nonlinear manner, so that the top of the first connecting bracket 1 is connected with the vehicle body 7 at the bolt positioning holes 11 through fixing bolts, the contact area between the top plane and the vehicle body girder can be effectively increased, and fatigue damage caused by local stress singularity is avoided. The top of the first connecting support 1 is die-cast with uneven thickness, the thickness of the three bolt positioning holes 11 is larger than that of other areas of the top plane, the thickness of the bolt positioning holes 11 is increased, the design strength is increased for the place with the largest stress, the conditions of jolt and collision of vehicles under extreme road conditions can be met, and the connection is firmer.

Four through holes are arranged on the bottom plane of the first connecting bracket 1, and the four through holes are sequentially arranged as follows: the positioning pin connecting structure comprises positioning pin mounting holes 17, nut cover mounting holes 18, locking bolt holes 19 and nut cover mounting holes 18, wherein the nut cover mounting holes 18 are positioned on two sides of the locking bolt holes 19, the positioning pin mounting holes 17 are positioned on one side of one of the nut cover mounting holes, and chamfers are arranged on the lower portions of the locking bolt holes 19, the nut cover mounting holes 18 and the positioning pin mounting holes 17, so that countersunk screws can be inserted conveniently when the locking bolt, the nut cover 4 and the positioning pin 5 are connected.

As shown in fig. 6 to 9, the second connecting bracket is T-shaped, the bottom end of the second connecting bracket 2 is provided with a baffle 22 which is bent upwards, the two sides of the front and back of the second connecting bracket are provided with longitudinal reinforcing ribs 23, the edge of the baffle 23 is provided with a transverse reinforcing rib 24, the transverse reinforcing rib 24 is connected with the longitudinal reinforcing ribs 23 at the two sides of the second connecting bracket 2, and forms a semi-closed cavity with the bottom plane 25 of the second connecting bracket 2, so that the whole strength of the device is increased while the moving range of the locking nut assembly is limited.

Two sides of the second connecting bracket 2 are respectively provided with a hanging lug 26, the hanging lugs 26 are provided with bolt positioning holes 21 and are connected with the vehicle body 7 through fixing bolts, and the two bolt positioning holes are symmetrically arranged, so that the problem that a fastening tool collides with the skirt edge of the vehicle is effectively solved, and the fastening of the fixing bolts is facilitated. The hangers are die-cast in uneven thickness, the thickness of the bolt positioning holes 21 is larger than that of the rest parts of the hangers, the thickness of the two fixing holes is increased, the design strength is increased for the place with the maximum stress, the conditions of jolt and collision of vehicles under extreme road conditions can be met, and the connection of the vehicles is firmer.

Four through holes are arranged on the bottom plane of the second connecting bracket, and the four through holes are sequentially arranged as follows: positioning pin mounting holes (not shown), nut cap mounting holes 28, locking bolt holes 29, and nut cap mounting holes 28, wherein the nut cap mounting holes 28 are located on both sides of the locking bolt holes 29, the positioning pin mounting holes are located on one side of one of the nut cap mounting holes 28, and lower portions of the locking bolt holes 29, the nut cap mounting holes 28, and the positioning pin mounting holes 24 are each provided with a chamfer, which facilitates insertion of a countersunk screw 43 when connecting the locking bolt, the nut cap 4, and the positioning pin 5.

The locking nut assembly is arranged in the semi-closed cavity of the first connecting support 1 and the second connecting support 2 and comprises a floating nut 3 and a nut cover 4, the floating nut 3 and the nut cover 4 are of a cubic structure, a central thread through hole 31 is formed in the bottom of the floating nut 3, namely, a large through hole is formed in the middle of the bottom of the central thread through hole, a chamfer is formed in the edge of the central thread through hole 31, the central thread through hole 31 of the floating nut 3 corresponds to the position of a locking bolt hole, and the locking bolt can be conveniently inserted into the locking bolt in threaded connection with the battery box.

The well upper portion of central thread through-hole is provided with the internal thread, with the screw thread phase-match of locking bolt, effectively reduces the locking bolt and the meshing degree of difficulty of floating nut 3. The floating nut 3 is not tightly combined with other parts, and the length, width and height of the floating nut 3 are all smaller than those of the nut cover 4, so that the floating nut is placed in a closed cavity formed between the nut cover 4 and the bottom plane of the connecting bracket in a floating mode to limit the moving range of the floating nut.

As shown in fig. 10, the nut cover 4 is a sheet metal part with a structure like a Chinese character 'ji', and is disposed on the floating nut 3, two ends of the bottom of the nut cover 4 are provided with connecting through holes 41, and fixing nuts 42 are welded at the connecting through holes 41, the positions of the two fixing nuts 42 respectively correspond to the nut cover mounting holes on the first connecting bracket 1 and the second connecting bracket 2, so that two ends of the bottom of the nut cover 4 are fixedly connected with the bottom plane of the connecting bracket by means of countersunk screws 43.

As shown in fig. 5 and 11, the positioning pins 5 are fixed on the bottom planes of the two first connecting supports 1 arranged diagonally, and the bottom ends of the positioning pins 5 are conical structures 51 matched with the positioning holes on the battery box. The middle part of the positioning pin 5 is a cylinder 52, two sides of the cylinder 52 are provided with mutually parallel notches 53, the upper end of the positioning pin 5 is a small cylinder and is in threaded connection with the bottom plane of the first connecting support 1 through a fixing nut 54 at the positioning pin mounting hole 17, a spring washer 55 and a flat washer 56 are arranged between the fixing nut 51 and the bottom plane, so that the easily worn part can be conveniently replaced, the notch 53 arranged in the middle part of the positioning pin can be clamped by a movable wrench, and the positioning pin 5 can be conveniently fixed when the nut is fastened.

And the orientation of each group of the first connecting bracket, the second connecting bracket and the adjacent first connecting bracket and second connecting bracket is opposite.

The following further describes embodiments of the present invention:

firstly, a single first connecting bracket 1 and a single second connecting bracket 2 are installed, a locking nut component is fixed on the connecting brackets, two sides of the bottom surface of a n-shaped nut cover 4 are provided with holes and welded with fixing nuts, and when the nut cover is fixed, a countersunk head screw penetrates through a nut cover mounting hole at the bottom of the connecting bracket and is meshed with the fixing nuts. And the positioning pins 5 are fixedly arranged at the bottoms of the two first connecting brackets 1 which are arranged diagonally.

Then, as shown in fig. 12, the first linking brackets 1 and the second linking brackets 2 are sequentially combined and arranged in the following order, and the sequential arrangement order and orientation of the first linking brackets 1 and the second linking brackets 2 are: the first group is a first connecting bracket 1 with opposite back surfaces, the second group is a second connecting bracket 2 with opposite front surfaces, the third group is a second connecting bracket 2 with opposite back surfaces, and the fourth group is a first connecting bracket 1 with opposite front surfaces. The total number of the eight connecting supports is eight, and the eight connecting supports are arranged oppositely in pairs, and the upper ends of the eight connecting supports are fixedly connected with the girder of the vehicle body at the bolt positioning holes 11 and 21 through fixing bolts and nuts. The support capacity of the connecting bracket is designed according to the weight of a common battery box, and the arrangement mode enables each fixing point to be stressed uniformly and meets the requirement of minimum yield strength. The weight of the connecting supports is light, the total weight of the eight connecting supports does not exceed 20 kilograms, and the dead weight of the whole vehicle can be reduced.

The locating pin of two diagonal angle installations just with the locating hole phase-match on the battery box for carry out spacing fixed to the battery box, the locking bolt on the battery box is corresponding with the floating nut on each linking bridge simultaneously, when floating nut 3 and locking bolt meshing, floating nut 3 is earlier by locking bolt jack-up, makes floating nut 3 and nut lid 4's top laminating, accomplishes the direction simultaneously, along with the screw-thread engagement fastening, floating nut 3 falls back and laminates with linking bridge's bottom. Eight locking bolts correspond 6 linking bridge, and locking one by one ensures that the battery box is fixed firm. When the battery box needs to be replaced, the locking bolt and the floating nut 3 are disengaged, so that the battery box can be easily disassembled, and the battery box is reasonable in structural design and convenient to disassemble and assemble.

The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.

Claims

1. A battery box connecting device for an electric automobile is characterized by comprising a main body, a locking nut component and a positioning pin,

the main body comprises a first connecting bracket and a second connecting bracket, the first connecting bracket and the second connecting bracket are oppositely arranged in pairs, and two groups of the second connecting brackets are arranged between the two groups of the first connecting brackets; the first connecting support is Z-shaped, the second connecting support is T-shaped, the bottom ends of the two connecting supports are respectively provided with an upward bent baffle, the edges of two sides of the first connecting support and the second connecting support are respectively provided with a longitudinal reinforcing rib, the edge of the top end of each baffle is provided with a transverse reinforcing rib, and the transverse reinforcing ribs are connected with the longitudinal reinforcing ribs on two sides and form a semi-closed cavity with the bottom plane of the connecting supports;

the locking nut assembly is arranged in the semi-closed cavity of the first connecting piece and the semi-closed cavity of the second connecting piece, the locking nut assembly comprises a floating nut and a nut cover, the floating nut and the nut cover are both of a cubic structure, and the bottom of the floating nut is provided with a central threaded through hole; the nut cover is arranged on the floating nut, two ends of the bottom of the nut cover are fixedly connected with the bottom plane of the connecting support, and the floating nut is placed between the nut cover and the bottom plane of the connecting support in a floating mode;

the positioning pins are fixed on the bottom planes of the two first connecting supports which are arranged diagonally.

2. The battery box connecting device for electric vehicles according to claim 1,

the top plane of the first connecting support is provided with a plurality of bolt positioning holes and is fixedly connected with the vehicle body by means of fixing bolts, and the bolt positioning holes with the same diameter are arranged in a nonlinear manner; a positioning pin mounting hole, a nut cover mounting hole, a locking bolt hole and a nut cover mounting hole are sequentially formed in the bottom plane of the first connecting support;

the two sides of the second connecting support are provided with lugs, bolt positioning holes are formed in the lugs and are fixedly connected with the vehicle body through fixing bolts, the bolt positioning holes are symmetrically arranged, and positioning pin mounting holes, nut cover mounting holes, locking bolt holes and nut cover mounting holes are sequentially formed in the bottom of the second connecting support.

3. The battery box connecting device for the electric vehicle as claimed in claim 1 or 2, wherein the bottom end of the positioning pin is of a conical structure, the middle part of the positioning pin is a cylinder, notches which are parallel to each other are arranged on two sides of the cylinder, the upper end of the positioning pin is in threaded connection with the bottom plane of the first connecting support through a fixing nut, and a spring washer and a flat washer are arranged between the fixing nut and the bottom plane.

4. The battery box connecting device for the electric vehicle as set forth in claim 2, wherein the lock bolt hole, the nut cap mounting hole, the positioning pin mounting hole and the central threaded through hole are all through holes, and lower portions thereof are all provided with chamfers.

5. The battery box connecting device for the electric vehicle according to claim 1 or 2, wherein the nut cover has a structure like a Chinese character 'ji', and the two ends of the bottom of the nut cover are provided with connecting through holes, and fixing nuts are arranged at the connecting through holes; the two fixing nuts are respectively corresponding to the nut cover mounting holes on the first connecting bracket and the second connecting bracket and are in threaded connection with the fixing nuts by means of countersunk screws.

6. The battery box connecting device for the electric vehicle as set forth in claim 2, wherein the central threaded through hole of the floating nut corresponds to the position of the lock bolt hole.

7. The battery box connecting device for the electric vehicle as claimed in claim 1, wherein the conical structure of the positioning pin matches with the positioning hole of the battery box.

8. The battery box connecting device for the electric vehicle as claimed in claim 1, wherein each set of the first connecting bracket, the second connecting bracket, and the adjacent first connecting bracket and second connecting bracket are oriented oppositely.

9. The battery box connecting device for the electric vehicle as set forth in claim 1, wherein a back reinforcing rib is provided at a middle position of a back surface of the first connecting bracket.