CN214083939U - Guide block of vehicle-mounted battery unlocking frame - Google Patents

Abstract

The utility model relates to a guide block of on-vehicle battery unlocking frame belongs to equipment protection technical field. The guide block comprises an anti-impact pad, and a protective cover is arranged on the collision surface of the anti-impact pad; a first hole is formed in the middle of the protective cover; the middle material of the impact-proof pad protrudes out of the first hole and extends to the outside of the protective cover to form an impact-proof block; the edge of the upper end of the collision avoidance block, which is far away from the first hole, is provided with an inclined surface structure, and the inclined surface structure is used as a guide surface, so that the external equipment is smoothly guided into the space surrounded by the guide block. The utility model discloses an install the collision avoidance piece of the elastic material preparation of battery assembly lateral part, alleviate the collision between battery assembly and the unblock frame, the inclined plane structure on the piece of colliding avoidance simultaneously can also play the guide effect, and help battery assembly installs smoothly, reduces the collision and strikes.

Description

Guide block of vehicle-mounted battery unlocking frame

Technical Field

The utility model relates to a mechanical lock equipment technical field, specifically speaking relates to a guide block of on-vehicle battery unlocking frame.

Background

Pure electric vehicles are gradually popularized, but the use experience of drivers is seriously influenced by the problem of overlong charging time. In order to solve the problem, many new energy automobile enterprises adopt a quick battery replacement technology, namely a battery assembly convenient to detach is mounted on a locomotive, and the requirement of continuous driving of a user is met by replacing an electrified battery at a specific battery replacement station. In the quick power change process, the newly changed battery assembly is pushed to a preset position in the automobile chassis by the lifting equipment for reliable power plug-in.

In practical use, most of the electricity replacement technologies are used for frequently operating pure electric vehicles, and in the frequency of replacing electricity almost once a day or even replacing electricity many times a day, the battery assembly needs to be subjected to assembly impact of high frequency, which affects the mechanical performance of the battery assembly and the mounting structure on the automobile chassis and affects the safety of the vehicle.

There is therefore a need for a device or apparatus that can be reliably used in this use scenario, protecting the battery assembly from as slight an impact as possible during installation.

Disclosure of Invention

1. Problems to be solved

The battery assembly to among the prior art collides easily in the assembling process, influences the problem of equipment dimensional stability and mechanical properties, the utility model provides a guide block of on-vehicle battery unlocking frame plays the protective apparatus purpose with the help of the nimble action buffering collision effect of guide block.

2. Technical scheme

In order to solve the above problems, the utility model adopts the following technical proposal.

A guide block of a vehicle-mounted battery unlocking frame comprises an impact-proof pad, wherein a protective cover is arranged on the collision surface of the impact-proof pad; a first hole is formed in the middle of the protective cover; the middle material of the impact-proof pad protrudes out of the first hole and extends to the outside of the protective cover to form an impact-proof block;

and an inclined surface structure is formed on the edge of the upper end of the collision avoidance block, which is far away from the first hole, and the inclined surface structure is used as a guide surface, so that the external equipment is smoothly guided into the space surrounded by the guide block.

Preferably, the impact pad is mounted on the protective mounting plate;

the first bolt group penetrates through the protective cover, the impact-proof pad and the protective mounting plate in sequence to fix the protective cover, the impact-proof pad and the protective mounting plate mutually;

a plurality of bolts in the bolt group are sleeved with coil springs, and the coil springs are embedded in the impact-proof pads and used for achieving buffering of the impact-proof pads relative to the bolt group.

Preferably, a through hole for passing through a first bolt is formed in the impact-proof pad; and the impact-proof pad is also provided with a coil spring groove coaxial with the through hole, the coil spring is arranged in the coil spring groove, and the first bolt penetrates through the center of the coil spring and the through hole.

Preferably, the shape of the first hole is matched with that of the collision avoidance block, and the radial dimension of the first hole is 1-3mm larger than that of the collision avoidance block.

Preferably, the collision avoidance block is made of rubber.

Preferably, the collision avoidance block protrudes 1-2mm beyond the shield.

Preferably, there are 4 bolts in the first bolt group, and the bolts are uniformly located on both sides of the collision avoidance block.

Preferably, the protective cover is made of metal, and the upper edge and the lower edge of the protective cover are in arc transition.

Preferably, the collision avoidance block is fixedly arranged on the impact pad in a detachable mode; the impact pad is made of metal.

3. Advantageous effects

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

(1) the utility model discloses an install the collision avoidance piece of the elastic material preparation of battery assembly lateral part, alleviate the collision between battery assembly and the unblock frame, the inclined plane structure on the piece of colliding avoidance simultaneously can also play the guide effect, and help battery assembly installs smoothly, reduces the collision and strikes. Furthermore, the coil spring is adopted to buffer the lateral movement of the collision avoidance block, so that the side impact caused by radial component force generated when the inclined surface structure contacts the unlocking frame can be protected.

(2) The utility model discloses an inlay the activity hasp structure of establishing on main back of the body roof beam in to occupy under the horizontal space prerequisite as little as possible, all structures have been integrated ingeniously. By adopting the scheme of reducing the transverse size of the equipment, the space can be reserved for the battery assembly as much as possible in the reserved space fixed by the automobile chassis so as to improve the electric storage capacity and meet the actual market demand of long-term endurance of the automobile, which is one of the cores of the sale and sale points of pure electric automobiles.

(3) The utility model discloses an auxiliary hook encircles the cooperation structure of cover on solid main back of the body roof beam for hook type frame can be generally regarded as hook type auxiliary frame, has improved the part commonality.

Drawings

FIG. 1 is a schematic diagram of a battery assembly at a front upper right view;

FIG. 2 is a schematic diagram of a battery assembly at a rear, upper left side view;

FIG. 3 is a schematic view of a battery assembly at a rear left lower viewing angle;

FIG. 4 is a structural diagram of the unlocking frame at the upper right view of the front part;

FIG. 5 is a structural diagram of the unlocking frame at the left lower side view of the rear part;

FIG. 6 is a schematic view of the front portion of the unlocking frame at an upper right view angle in cooperation with the battery assembly;

FIG. 7 is a schematic view of the rear left lower side view of the release bracket in cooperation with the battery assembly;

FIG. 8 is a schematic view of a locking frame according to an embodiment;

FIG. 9 is a schematic view showing the locking bracket of an embodiment with the hook type bracket removed;

FIG. 10 is a schematic view of a first perspective of a hook frame in one embodiment;

FIG. 11 is a second perspective view of an embodiment of a hook frame;

FIG. 12 is a schematic view of a third perspective of a hook frame in one embodiment;

FIG. 13 is a schematic view of a first perspective of the shock post/adjuster bolt;

FIG. 14 is a second perspective view of the shock post/adjuster bolt;

FIG. 15 is a schematic view of the sensor and hook-type auxiliary frame;

FIG. 16 is a schematic view of a sensor holder;

FIG. 17 is a schematic view of a protective mounting plate construction;

FIG. 18 is a schematic view of an impact pad configuration;

FIG. 19 is a schematic view of the shield structure;

FIG. 20 is a schematic view of the overall structure of the guide block;

FIG. 21 is a schematic view of a first perspective of the positioning sleeve fixedly connected to the inverted V-shaped guide frame;

FIG. 22 is a schematic view of a second perspective of the positioning sleeve fixedly connected to the inverted V-shaped guide frame;

FIG. 23 is a schematic view of a 6-degree-of-freedom full constraint applied to a fixing seat of an unlocking frame;

FIG. 24 is a view of modal data and characterization for the unlocking frame of order 1 under the constraint of FIG. 23;

FIG. 25 is a 2 nd order modal data and characterization plot of the unlocking frame under the constraint of FIG. 23;

FIG. 26 is a graph of modal data and characterization for the unlocking frame 3 order under the constraint of FIG. 23;

FIG. 27 is a graph of modal data and characterization for the 4 th order unlocking frame under the constraint of FIG. 23;

FIG. 28 is a representation of modal data of 5 th order of the unlocking frame under the constraint of FIG. 23;

FIG. 29 is a representation of modal data for the unlocking frame of order 6 under the constraint of FIG. 23;

fig. 30 is a schematic view of the locking frame and the hook-type auxiliary frame under the load of 5250N on the battery assembly;

FIG. 31 is an enlarged 50 times deformation effect diagram of the unlocking frame in FIG. 30;

FIG. 32 is a force-bearing effect diagram of the unlocking frame in FIG. 30;

FIG. 33 is an enlarged view of a portion A of the maximum force portion in FIG. 32;

FIG. 34 is a schematic view of the bolt hole constraint in the locking bracket and 1000N force applied to the secondary hook;

FIG. 35 is a force-receiving effect diagram of the locking bracket of FIG. 34;

FIG. 36 is an enlarged view of portion B (rear leg pivot support sleeve) of FIG. 35;

FIG. 37 is a schematic view of the displacement of the locking bracket of FIG. 34;

FIG. 38 is a simplified diagram of a guide block digital model;

FIG. 39 is a schematic view of the guide block 1000N load application;

FIG. 40 is a force effect diagram of the guide block under the force condition of FIG. 39;

FIG. 41 is a graph showing the effect of guide block displacement under the force applied in FIG. 39;

FIG. 42 is a graph illustrating the effect of the force applied to the bolt in the force applying condition of FIG. 39;

FIG. 43 is a graph showing the effect of bolt displacement under the force applied in FIG. 39.

In the figure:

1. an unlocking frame;

2. a left stringer; 21. triangular plates; 22. lightening holes; 23. a fixed seat;

3. a right stringer;

4. a front beam; 41. a lower wing plate;

5. a rear beam;

6. a battery assembly; 61. a support pillar; 62. a positioning column;

7. a locking frame; 71. a hook-shaped frame; 72. a primary back beam; 73. a strut bearing groove; 74. a vertical slot; 75. f, locking; 76. a main hook; 77. an auxiliary hook; 77a, a front leg; 77b, posterior lateral legs; 78. a base station; 79. a pressure spring; 710. cushion blocks; 711. a shock-absorbing through hole; 712. a shock-absorbing post; 713. adjusting the bolt;

8. a hook-type auxiliary frame;

9. a sensor; 91. a probe rod; 92. a sensor mount; 93. a front end plate; 94. a rear end plate; 95. a sensor return spring; 96. an end hole; 97. an inner shell sleeve; 98. an adjusting sleeve; 99. a sliding plate;

10. a guide block; 101. a protective mounting plate; 102. an impact-resistant pad; 103. a collision avoidance block; 104. a protective cover; 105. a first bolt; 106. a coil spring; 107. a first hole; 108. a through hole; 109. a spring coiling groove;

11. inserting an electrical interface assembly;

12. a positioning sleeve; 121. an inverted V-shaped guide frame.

Detailed Description

In order to make the utility model realize that the technical means, the creation characteristics, the achievement purpose and the efficacy are easy to be understood, the utility model is further explained by combining the embodiment.

As shown in fig. 1 to 7, a guide block of an unlocking bracket for a vehicle-mounted battery includes an unlocking bracket 1. The unlocking frame 1 comprises a left longitudinal beam 2 and a right longitudinal beam 3 which are parallel to each other. The front and rear ends of the left longitudinal beam 2 and the right longitudinal beam 3 are respectively connected and fixed by a front beam 4 and a rear beam 5, so that a quadrilateral frame structure is integrally formed. In use, the battery assembly 6 is mounted within the quadrilateral frame structure, whereby the quadrilateral frame structure is utilized to surround and secure the battery assembly 6.

Since the frame structure is formed to fittingly surround the battery assembly 6, in some embodiments, one end of the battery assembly 6 is narrowed relative to the rest, but the thickness is increased to accommodate system structures other than the battery in the battery assembly 6, so that in this embodiment, in order to enhance the support of this portion, the rear end portions of the left and right side members 2, 3 are bent inward to form an inward-contracting structure fitting the shape of the battery assembly 6, and a hook-type auxiliary frame 8 is additionally provided on the inner side of this portion, and the support of this portion is done in cooperation with a locking mechanism.

The locking mechanism for supporting the battery assembly 6 in this embodiment is a plurality of locking brackets 7 mounted on the inner side surfaces of the left longitudinal beam 2 and the right longitudinal beam 3. The quantity and the position of locking frame 7 set up according to battery assembly 6's specific model and size, and in this embodiment, battery assembly 6 is compact car adaptation model, therefore only need three locking frame 7 to lock on every side. Besides the hook-shaped auxiliary frames 8 arranged at the rear end parts of the left longitudinal beam 2 and the right longitudinal beam 3, two hook-shaped auxiliary frames 8 are also arranged at the inner side surfaces of the front ends of the left longitudinal beam 2 and the right longitudinal beam 3, so that the two sides of the battery assembly 6 are uniformly and completely supported.

As shown in fig. 7 to 14, the specific structure of the locking frame 7 is as follows:

the locking frame 7 comprises a hook frame 71, and the main body structure of the hook frame 71 is a main back beam 72. The front end of the primary back beam 72 is bent downward a distance and then bent in the opposite direction a distance. The other end of the main back beam 72 is also bent downward to form the other side wall of the support post receiving groove 73, and finally, an L-shaped support post receiving groove 73 is formed below the main back beam 72 for receiving and supporting the support post 61 at the side of the battery assembly 6.

The main back beam 72 is provided with a vertical slot 74. An F-lock 75 is hinged in the vertical slot 74. Specifically, the F-lock 75 includes a main L-shaped hook 76 fastened above the hook frame 71, and a secondary hook 77 located in the middle of the F-lock 75 and extending downward, in this embodiment, the lower end of the secondary hook 77 extends to the front and rear sides to form a front leg 77a and a rear leg 77 b. The front leg 77a extends through the vertical slot 74 into the support post receiving slot 73 to form a movable catch for blocking the support post receiving slot 73, thereby locking the support post 61 at the side of the battery assembly 6 in the support post receiving slot 73. The forward-inclined configuration of the lower end of the front leg 77a prevents the support post 61 from being pushed out of the gap between the post bearing groove 73 and the lower end of the front leg 77a, improving the locking reliability of the front leg 77 a. The rear side leg 77b is hinged in the vertical slot 74 of the main back beam 72. In order to reset the front end of the main hook 76, in the present embodiment, the rear end of the main back beam 72 extends backward out of the base 78, the rear end of the main hook 76 also extends above the base 78, and a space for accommodating the compression spring 79 is formed between the base 78 and the rear end of the main back beam.

When the device is used, the rear end of the main hook 76 is lifted by the pressure spring 79, the front end of the main hook 76 is pressed and buckled on the main back beam 72 by taking the hinge pivot as a rotation center, the auxiliary hook 77 is pressed into the vertical groove 74, and the normally closed blocking of the auxiliary hook 77 on the strut bearing groove 73 is realized. When it is necessary to quickly mount the battery assembly 6 in the lock frame 7, the support post 61 is moved up to the front side branch 77a along the post bearing groove 73 and the front side branch 77a is lifted up, at which time the compression spring 79 is compressed. After the front leg 77a moves up to the corner position of the support bearing groove 73, the front leg 77a moves forward and enters the foremost end of the support bearing groove 73, at this time, the support post 61 has released the jacking of the front leg 77a, the front leg 77a returns under the action of the compression spring 79, and the exit path of the support post 61 is blocked, so that the support post 61 and the battery assembly 6 are locked. When the locking frame 7 needs to be unlocked, the main hook 76 is jacked up by utilizing a jacking mechanism on the battery lifting platform, so that the auxiliary hook 77 is pushed out from the support bearing groove 73, the battery assembly 6 is pushed backwards, the support column 61 can be moved to the corner of the support bearing groove 73, and then the battery assembly 6 can be dismounted by downwards picking up the battery assembly 6.

In the above embodiment, since the movable latch structure embedded in the main back beam 72 is adopted, all the structures are skillfully integrated on the premise of occupying as small a lateral space as possible. By adopting the scheme of reducing the transverse size of the equipment, the space can be reserved for the battery assembly 6 as much as possible in the reserved space fixed by the automobile chassis so as to improve the electric storage capacity and meet the actual market demand of long-term endurance of the automobile, which is one of the cores of the sale and sale points of pure electric automobiles.

Further, in order to better realize the complete support of the battery assembly 6 by the unlocking frame 1, the following supplementary technical scheme is also needed.

In order to realize the movement of moving the support post 61 upward to the uppermost part of the post receiving groove 73 forward or retreating backward when unlocked, in the present embodiment, a U-shaped catch is provided on the battery lifting platform, and the hook-shaped auxiliary frame 8 is configured to match the U-shaped catch. During the use, the U type card holds in the palm and follows the battery lift platform and shift up to the card is in the hook type auxiliary frame 8 outside, and support column 61 moves up from pillar bearing groove 73 opening part this moment, then the U type card holds in the palm and drives support column 61 and remove to foremost from pillar bearing groove 73 corner, and the secondary hook 77 that is lifted this moment restores to the throne the shutoff. When unlocking, the U-shaped clamp support moves towards the hook-shaped auxiliary frame 8 to realize clamping, and at the moment, the jacking mechanism on the battery lifting platform moves to the position of the main hook 76 to jack up the main hook 76. When the U-shaped bracket completely engages the hook-shaped auxiliary frame 8, the auxiliary hook 77 is just completely withdrawn from the supporting column bearing groove 73, a backward moving path of the supporting column 61 is reserved, then the U-shaped bracket drives the hook-shaped auxiliary frame 8 and the whole battery assembly 6 to move backward, then the U-shaped bracket moves downward, the supporting column 61 moves backward to the corner of the supporting column bearing groove 73, and then the U-shaped bracket moves downward to separate from the supporting column bearing groove 73. In this process, the jack mechanism always supports the main hook 76 until the support post 61 moves below the auxiliary hook 77.

In order to realize that the jacking mechanism always supports the main hook 76 in the backward movement process of the battery assembly 6, in the embodiment, the forward extension of the main hook 76 relative to the main back beam 72 is set to be greater than the transverse movement distance of the support column 61 in the support column bearing groove 73, so that the jacking mechanism can still always support the main hook 76 even if the jacking mechanism and the U-shaped clamping support move backward under the support of the same fixed platform.

A cushion block 710 is fixed at the foremost end inside the strut bearing groove 73, and a shock absorption through hole 711 extending to the front part of the main back beam 72 is arranged in the cushion block 710. And a damping column 712 is installed in the damping through hole 711 and used for limiting and damping the movement of the supporting column 61. The shock absorbing posts 712 extend slightly beyond the pad 710 to provide shock absorption. The limit of movement of the support post 61 can be adjusted simply and efficiently by replacing a different type of spacer 710.

In another possible embodiment, the damping columns 712 are replaced by adjusting bolts 713 and are installed in the front end downward bending portions of the cushion blocks 710 and the main back beam 72 in a threaded manner, one end of each adjusting bolt 713 extends out of the front end downward bending portion of the main back beam 72 and is provided with a cross groove, and the position of the cushion blocks 710 in the column bearing grooves 73 can be adjusted by rotating the adjusting bolts 713, so that the moving limit of the supporting columns 61 can also be adjusted.

In order to facilitate the battery assembly 6 to better enter the unlocking frame 1 from the lower part and avoid the rigid impact between the locking frame 7 and the battery assembly 6, in the embodiment, a chamfer avoiding structure is arranged on the edge of the lower end of the locking frame 7 close to the inner side surface.

In another possible embodiment, a tension spring is provided below the main hook 76 at a position on the front side of the sub-hook 77. One end of the tension spring is connected with the main hook 76, and the other end of the tension spring is connected with the main back beam 72, so that the front end of the main hook 76 is pulled downwards, and the auxiliary hook 77 is pulled into the strut bearing groove 73 under the normal state.

In another possible embodiment, the front end of the main hook 76 may be hinged to the main back beam 72, and the rear end of the main hook 76 extends a distance relative to the main back beam 72 for engaging with a jacking mechanism to jack up the rear end of the main hook 76, so as to achieve the purpose of flexibly withdrawing the auxiliary hook 77 from the pillar carrying groove 73. Accordingly, a return tension spring is provided between the middle rear portion of the main hook 76 and the main back beam 72, and the tension spring pulls the sub-hook 77 into the stay bearing groove 73 in a natural state.

In another possible embodiment, the rear end of the main hook 76 is hinged to the main back beam 72, and a return tension spring is provided between the front or middle portion of the main hook 76 and the main back beam 72, and naturally pulls the auxiliary hook 77 into the strut receiving groove 73.

In another possible embodiment, the secondary hook 77 extends into the pillar carrying groove 73 by looping around one side of the main back beam 72, and in order to avoid the secondary hook 77 moving up to the limit position to block the exit path of the supporting pillar 61, in this embodiment, an avoiding groove is formed upward at a corner of the pillar carrying groove 73. In use, when the F-lock 75 is pushed upward by a force, the auxiliary hook 77 is lifted back into the escape groove, which is the maximum position where the auxiliary hook 77 is lifted, and then the support post 61 can be smoothly withdrawn along the post bearing groove 73. Although the transverse size of the locking frame 7 needs to be slightly sacrificed due to the arrangement of the structure, the structural strength of the main back beam 72 can be ensured, and the locking frame 7 formed by assembling the solid main back beam 72 and other parts can reduce the processing difficulty and save the material cost.

With respect to the foregoing embodiment, it should be further explained that the overall structure of the hook type auxiliary frame 8 used in cooperation with the locking frame 7 is substantially the same as that of the main back beam 72, except that the F-lock 75 is omitted, and the matching structural design for assembling the F-lock 75 is adopted. Because the hook-type auxiliary frame 8 does not need to be matched with the F lock 75, the hook-type auxiliary frame does not need to be processed into a hollow structure, and the processing cost can be obviously saved. In the above, in the case of such a demand, the solid main back beam 72 in this embodiment can be used as the hook-type auxiliary frame 8 in general, and the versatility of parts is further improved.

In another possible embodiment, there is a relative translational movement between the F-lock 75 and the hook-shaped frame 71. The main hook 76 of the F-lock 75 is connected to the main back beam 72 by a tension spring, the main hook 76 is attached to the main back beam 72 in a normal state, and the auxiliary hook 77 is located in the strut bearing groove 73. The main hook 76 protrudes with respect to the hook frame 71 by a length for cooperating with the lifting operation of the unlocking mechanism. When the lifting device is used, the lifting mechanism lifts the main hook 76, the auxiliary hook 77 stably moves upwards along a guide structure such as the vertical groove 74 and the like, and retreats from the support bearing groove 73 so as to release the locking of the support post 61.

Referring to fig. 15 and 16, in order to sense whether the movement of the supporting post 61 reaches the target position, in the present embodiment, the shock absorbing post 712 or the adjusting bolt in the shock absorbing through hole 711 of one of the hook type auxiliary frames 8 is removed to accommodate the probe 91 of the position sensor 9. In this embodiment, in order to facilitate the lead-out of the sensor 9, it is preferable that the hook-shaped auxiliary frame 8 at the forefront is used as a structure for cooperating with the sensor 9. Specifically, a sensor holder 92 is mounted on the front end of the hook type sub-frame 8, and the sensor holder 92 includes a front end plate 93 and a rear end plate 94. A sensor return spring 95 is mounted on the rear end surface of the front end plate 93. The rear end plate 94 is provided with an end hole 96 for the probe 91 to pass through, and an inner casing 97 is fixedly installed in the end hole 96. The rear end of the inner shell sleeve 97 is in threaded fit with an adjusting sleeve 98, and the outer surface of the adjusting sleeve 98 is provided with anti-skid threads. The rear end plate 94 is fixedly connected to a slide plate 99. The sliding plate 99 is provided with a dovetail groove, and the sliding plate 99 is slidably fitted to the dovetail rails on the inner side surfaces of the left longitudinal beam 2 and the right longitudinal beam 3 based on the dovetail groove. The front end plate 93 is fixedly mounted on the left and right longitudinal beams 2, 3 and fixed relative to the dovetail rail.

When the device is used, the other end of the adjusting sleeve 98 is abutted against the hook-shaped auxiliary frame 8, the sensor 9 is arranged between the front end plate 93 and the rear end plate 94, and the probe 91 of the sensor sequentially penetrates through the end hole 96, the inner shell sleeve 97, the adjusting sleeve 98 and the damping through hole 711. Based on the difference to the detection demand, need to change the length that probe 91 stretches through shock attenuation through-hole 711, at this moment, through rotation regulation cover 98, can push back end plate 94 forward with the help of inner housing 97, and then drive sliding plate 99, sensor 9 and probe 91 and move a section distance forward, and utilize sensor reset spring 95 to support and reset, with this change that realizes probe 91 extension length, the horizontal size of adaptation pillar bearing groove 73, also be convenient for realize carrying out hardware compensation to different model sensor 9 service errors. In addition, the elastic coefficient of the sensor return spring 95 is smaller than that of the elastic member for supporting the probe 91 by contraction, so that the influence of the contraction of the sensor return spring 95 on the reading of the sensor 9 during the normal use of the probe 91 is avoided.

In this embodiment, in order to avoid hard impact between the battery assembly 6 and the unlocking frame 1 due to the non-corresponding matching position when the battery assembly 6 is lifted into the unlocking frame 1, besides the chamfer avoiding structure provided at the lower end of the inner side surface of the locking frame 7, the guide block 10 is further provided on the battery assembly 6, as shown in fig. 17 to 20. Guide block 10 is including being used for installing protection mounting panel 101 on the battery assembly 6 support body, install protecting against shock pad 102 on the protection mounting panel 101, protecting against shock pad 102's the outside protrusion in middle part forms and avoids bumping block 103. The impact-proof pad 102 is covered with a protective cover 104, the middle of the protective cover 104 is provided with a hole structure for protruding the impact-proof block 103, and the protective cover 104 can cover the bolt head and other structures for fixing the impact-proof pad 102, so that the bolt head or the bolt head and other structures are prevented from being scraped with parts in the unlocking frame 1. The upper inner edge of the collision avoidance block 103 is set to be a large inclined plane for guiding the battery assembly 6 into the unlocking frame 1 more smoothly.

In another possible embodiment, bumper 103 is made of a rubber material. Further, in order to increase the shock absorbing performance of the impact block 103 at the time of impact, a coil spring 106 is fitted around the outside of the first bolt 105 to which the impact block 103 is attached, and the coil spring 106 is fitted in a bolt hole provided in the impact block 103. During the use, when avoiding colliding piece 103 collision unblock frame 1, avoid colliding piece 103 itself and adopt wear-resisting rubber material, have the shock attenuation concurrently, can provide fine side protection for battery assembly 6 in the actual service environment who frequently changes battery assembly 6. Meanwhile, a coil spring 106 is arranged between the collision avoidance block 103 and a first bolt 105 screwed on the battery assembly 6 at an interval, and the collision avoidance block 103 can have certain displacement and deformation relative to the battery assembly 6 by utilizing the buffering action of the coil spring 106, so that the heavy battery assembly 6 can be better and safely guided into the unlocking frame 1. Accordingly, a gap of less than 3mm may be left between the hole structure in the middle of the shield 104 and the protruding portion in the middle of the bump stop 103, so that the bump stop 103 is displaced appropriately.

In this embodiment, the middle of the front beam 4 is provided with the electrical plug interface assembly 11, and during assembly, in order to quickly and accurately match the plug socket of the battery assembly 6 with the electrical plug interface assembly 11 in the middle of the front beam 4, the front beam 4 needs to be provided with the positioning sleeve 12 matched with the hole shaft of the battery assembly 6. The outer end of the positioning sleeve 12 is provided with a chamfer for receiving the positioning column 62, and the positioning column 62 is fixedly arranged on the front end surface of the battery assembly 6. In practical use, the right longitudinal beam 3 and the locking frame 7 on the inner side surface of the left longitudinal beam 2 always block and limit the upward moving limit of the supporting column 61, so that the battery assembly 6 usually has no movement error in the vertical direction, but in the transverse direction, the battery assembly 6 may have assembly errors, because a certain gap is reserved between the right longitudinal beam 3 and the left longitudinal beam 2 for the battery assembly 6 to be smoothly placed into the unlocking frame 1, on the other hand, the volume of the battery assembly 6 needs to be considered in the use process, and due to the expansion and contraction effect and other factors, the change to a certain degree occurs. Due to the above-mentioned clearance, the battery assembly 6 may be more biased to the left or right at the beginning of the installation, so that the positioning post 62 on the battery assembly 6 cannot enter the chamfer of the positioning sleeve 12 at the initial position, which will cause the positioning sleeve 12 to become an obstacle during the forward installation of the battery assembly 6 and not play a role in positioning. In order to solve the above problem, in the present embodiment, an inverted V-shaped guide frame 121 is attached to an end portion of the positioning sleeve 12. When in use, the two side arms of the inverted V-shaped guide frame 121 extend downwards and are gradually opened. The positioning column 62 completely falls into the two side arms of the inverted-V-shaped guide frame 121 in the upward moving process and is gradually guided to the position opposite to the positioning sleeve 12, then the battery assembly 6 is pushed by the U-shaped clamping support to move forward, the positioning sleeve 12 is accurately guided with the positioning column 62, the socket on the battery assembly 6 is accurately matched with the plug-in interface assembly 11 in the middle of the front beam 4, and the rapid and safe loading of the battery assembly 6 is realized.

In this embodiment, the left longitudinal beam 2 and the right longitudinal beam 3 are both stamped into an L shape by using steel plates, and a plurality of sets of triangular plates 21 are welded at corners to be used as reinforcing rib plates. The locking frame 7, the hook-shaped auxiliary frame 8, the sensor fixing frame 92 and the like are all arranged on the vertical plates of the L-shaped left longitudinal beam 2 and the L-shaped right longitudinal beam 3. In order to reduce the weight of the unlocking frame 1, lightening holes 22 are formed in the horizontal plate, and the lightening holes 22 are positioned between the reinforcing rib plates at intervals.

Further, since the back beam 5 only plays a role of connection and is not a bearing member, the cross-sectional size of the back beam 5 is smaller than that of the left longitudinal beam 2 and the right longitudinal beam 3, and meanwhile, in order to ensure the structural strength of the back beam 5, the back beam 5 adopts an i-shaped cross section. Similarly, the front beam 4 has an i-shaped cross section. Furthermore, because the middle part of the front beam 4 needs to be provided with the plug-in interface assembly, the area of the middle part is large, and the plug-in interface assembly is easily deformed by the pressure of the battery assembly 6 during use, so that the matching of the connectors in the plug-in interface is influenced. Therefore, the lower wing plate 41 of the front beam 4 is a square tube, so as to further enhance the structural strength of the front beam 4, avoid the deformation of the front beam 4 and ensure the accurate assembly of the plug-in connector of the battery assembly 6.

In the first embodiment, a finite element analysis software is further adopted to perform modal analysis and static analysis on the data model structure of the unlocking frame 1, as shown in table 1:

materials: HC420 Unit System: mm is

TABLE 1 HC420 Material Performance parameters

The left longitudinal beam 2, the right longitudinal beam 3, the front beam 4 and the rear beam 5 of the unlocking frame 1 are made of the materials with the mechanical properties.

And the left longitudinal beam 2 and the right longitudinal beam 3 are 1400mm long, 140mm wide, 60mm high and 2.5mm thick according to the actual use condition. The back beam is 777mm long, 60mm high, and the plate thickness is 16 mm. The length of the front beam is 1045mm, the thickness of the plate is 16mm, the highest position of the middle part is 110mm, and the two sides are gradually reduced to 60 mm.

In order to comprehensively consider the accuracy of the model and save the calculation cost, the model is simplified by a small amount: a process round hole with a smaller diameter and a transition fillet are deleted, so that stress concentration is prevented; while important wells were retained for further analysis.

The whole model adopts hexahedron grids and tetrahedral grids. With the mesh sizes being 3mm and 5mm respectively.

1. Modal analysis

Boundary conditions: a plurality of fixing seats 23 fixedly mounted with the vehicle body are arranged above the left longitudinal beam 2 and the right longitudinal beam 3, two fixing seats 23 are also arranged on the front beam 4, and 6-degree-of-freedom full constraint is arranged on the fixing seats 23.

The first 6 modal data and characterization are shown in fig. 24-29.

When the vehicle runs, the excitation frequency from the road surface is generally 0-20Hz, and the main vibration excitation frequency is generally less than 30Hz in consideration of other excitation effects, such as vibration of a transmission system, a vehicle body and an axle. In practice, the low order modes are easily excited by the outside world, so that the excitation frequency is prevented from being close to or coincident with the low order natural frequency. The first 6 order modal results were selected in this example. Meanwhile, to ensure that the mechanical parts have resonance, the following conditions are generally ensured:

0.85f＞f_p

in the formula, f: the natural frequency of the part; f. of_p: the frequency of the excitation source.

TABLE 2 relationship between the natural frequency of the parts and the displacement of the unlocking frame under different constraint orders

The experimental data in table 2 were substituted into the formula: 0.85 × 51.183 ═ 43.5 > 30. No resonance occurs. Meanwhile, as shown in fig. 24 to 29, in the first 6 th-order mode, the displacement is about 1mm, so that the stability of the entire unlocking frame 1 is better.

2. Static analysis

The battery mass is 350kg in general, and the battery finally takes 1.5 times of load, namely the actual load is 5250N in consideration of certain safety. In this embodiment, there are three locking frames 7 on each side, five hook-shaped auxiliary frames 8, two hook-shaped auxiliary frames 8 are located on the front side of the left longitudinal beam 2 or the right longitudinal beam 3, two hook-shaped auxiliary frames 8 are located on the rear side of the left longitudinal beam 2 or the right longitudinal beam 3, and the remaining one configuration auxiliary frame is located on the corresponding side of the front beam 4. The load of 5250N is evenly distributed by a total of 16 frames on the two sides. While giving full restraint with 6 degrees of freedom to the fixed seats 23 above the left and right longitudinal beams 2, 3. Specifically, as shown in fig. 30, the final displacement and force results are shown in fig. 30 to 32. As shown in the figure, the maximum stress of the unlocking frame 1 is 286.3MPa, which is far less than the yield strength of HC420 steel; meanwhile, the maximum deformation of the locking frame is only 2.781mm, and the deformation amount is small. Therefore, the stability and strength of the locking frame can be satisfied.

Second, stress analysis of the locking frame 7

Unit system: mm is

Steel material parameters of Table 345

The locking frame 7 adopts the materials in the table 3, and in order to comprehensively consider the accuracy of the model and save the calculation cost, the model is simplified by a small amount: parts that do not have a large impact on model stress are eliminated while preserving vital components for analysis.

The thickness of the main back beam of the hook-shaped frame is 15mm, the downward bending height of two ends of the main back beam is 50mm, and the length of the main part of the main back beam is 75 mm. The width of the strut bearing groove is 15mm, the length of the horizontal part is 40mm, and the vertical length is 30 mm. The pivot aperture for hinging the secondary hook, which is opened on the main back beam, is 10mm, and keeps a proper distance with the boundary of the main body. The vertical groove is 55mm long and 8mm wide.

The whole model adopts tetrahedral mesh. The mesh size is 2 mm.

Boundary conditions: and 6-degree-of-freedom full constraint is carried out on the bolt hole for fixing the locking frame 7.

Loading: a concentrated force of 1000N is applied to the locking frame 7, pointing inwards. The specific location is shown in fig. 34.

The resulting stress and deformation is shown in fig. 35 and 37.

As shown in the figure, the maximum stress of the locking frame 7 is 178.8MPa, which is smaller than the yield strength of HC 420; meanwhile, the maximum deformation is about 0.243mm, and the deformation is small. The strength requirement of the locking frame 7 can be met.

Thirdly, analyzing the stress of the guide block 10

HC420LA was used. The height of the protective cover 104 and the protective mounting plate 101 is 70mm, the width of the protective cover is 80mm, the material thickness of the protective cover is 2mm, and the hole for accommodating the collision avoidance block 103 in the middle is 35 mm multiplied by 45 mm. 4 sets of M4 bolts were used.

Model simplification and grid setting: since the bolt of the guide block 10 plays a role in moving and positioning, it is necessary to prevent the bolt from being broken by shearing force, so that the stress of the bolt is mainly analyzed.

1. In order to comprehensively consider the accuracy of the model and save the calculation cost, the model is simplified by a small amount: the part which can not generate larger influence on the stress of the model is deleted, the model is simplified, and meanwhile, the locking frame is simplified into a plate.

2. The whole model adopts tetrahedral mesh. The grid density of the bolts is 0.8mm, and the grid density of other parts is 4 mm. As shown in detail in fig. 38.

Boundary conditions: a full 6 degree of freedom constraint is imposed on the back of the guide block 10.

Loading: firstly, 1000N of leftward concentrated force is given to the guide block 10; then 1000N of concentrated force is given to the transmission member to the right. Specifically, as shown in fig. 39, the final force and displacement are shown in fig. 40 and 41.

From the above figure, the maximum stress of the entire guide shoe 10 is 9.576MPa, and the maximum displacement is less than 0.1 mm. Can realize that the damage does not occur in the process of bearing the force.

Meanwhile, based on the bolt stress on the guide block 10 and the displacement cloud pictures 42 and 43, the maximum stress of the bolt is 2.883MPa, the maximum displacement is less than 0.1mm, and the stability and the strength of the guide block 10 can be ensured.

In another possible embodiment, in order to reduce the total weight of the unlocking frame 1, realize lightweight support and meet the energy-saving and emission-reduction requirements of operating vehicles, the left longitudinal beam 2, the right longitudinal beam 3 and the front beam 4 are all replaced by rectangular tube structures, the embodiment is subjected to the similar experiments, the obtained experimental data verifies that the material thickness in the original embodiment is uniformly reduced, the left longitudinal beam and the right longitudinal beam of 2.5mm are changed into square tubes with the material thickness of 2mm, the rear beam and the front beam of 16mm are changed into square tubes with the material thickness of 2mm, and lightening holes are still formed, so that the total weight of the equipment is smaller than the weight of the unlocking frame 1 in the original embodiment, and the mechanical property can still meet the use requirements.

In the description of this patent, it is to be understood that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "front", "back", and the like, are used in the orientations and positional relationships indicated in the drawings, which are based on the orientations and positional relationships indicated in the drawings, and are used for convenience in describing the invention and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the patent.

In this patent, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, but rather that the principles of the invention are described in the above embodiments and the description, and that various changes and modifications may be made without departing from the spirit and scope of the invention, and these changes and modifications are intended to be included within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (9)

1. A guide block of a vehicle-mounted battery unlocking frame comprises an impact-proof pad (102), wherein a protective cover (104) is installed on a collision surface of the impact-proof pad (102); the method is characterized in that:

a first hole (107) is formed in the middle of the protective cover (104); the middle material of the impact-proof pad (102) protrudes out of the first hole (107) and extends to the outside of the protective cover (104) to form an impact-proof block (103);

an inclined plane structure is formed on the edge of the upper end of the collision avoidance block (103) far away from the first hole (107), and the inclined plane structure is used as a guide surface, so that external equipment is smoothly guided into a space surrounded by the guide block.

2. The guide block of an on-vehicle battery release bracket according to claim 1, characterized in that:

the impact-proof pad (102) is arranged on the protective mounting plate (101);

a first bolt (105) group penetrates through the protective cover (104), the impact-resistant pad (102) and the protective mounting plate (101) in sequence to fix the protective cover, the impact-resistant pad and the protective mounting plate with one another;

a plurality of bolts (105) in the first bolt (105) group are sleeved with coil springs (106), and the coil springs (106) are embedded in the impact-proof pad (102) and used for buffering the impact-proof pad (102) relative to the first bolt (105) group.

3. The guide block of an on-vehicle battery release bracket according to claim 2, characterized in that:

the impact-proof pad (102) is provided with a through hole (108) for a first bolt (105) to pass through; the impact-proof pad (102) is further provided with a coil spring groove (109) coaxial with the through hole (108), the coil spring (106) is installed in the coil spring groove (109), and the first bolt (105) penetrates through the center of the coil spring (106) and the through hole (108).

4. The guide block of an on-vehicle battery release bracket according to claim 1, characterized in that:

the shape of the first hole (107) is matched with that of the collision avoidance block (103), and the radial dimension of the first hole (107) is 1-3mm larger than that of the collision avoidance block (103).

5. The guide block of an on-vehicle battery release bracket according to claim 1, characterized in that:

the collision avoidance block (103) is made of rubber.

6. The guide block of an on-vehicle battery release bracket according to claim 2, characterized in that:

the collision avoidance block (103) protrudes out of the protective cover (104) by 1-2 mm.

7. The guide block of an on-vehicle battery release bracket according to claim 2, characterized in that:

the number one bolt (105) group has 4 bolts in total, and the bolts are uniformly positioned on two sides of the collision avoidance block (103).

8. The guide block of an on-vehicle battery release bracket according to claim 1, characterized in that:

the protective cover (104) is made of metal, and the upper edge and the lower edge of the protective cover (104) are in arc transition.

9. The guide block of the vehicle-mounted battery release bracket according to any one of claims 1 to 8, characterized in that:

the collision avoidance block (103) is fixedly arranged on the impact prevention pad (102) in a detachable mode; the impact pad (102) is made of metal.

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