CN116130858A - Shock absorbing parts, bottom bracket frame, power battery box assembly and battery replacement vehicle - Google Patents

Abstract

The invention relates to a damping part, a collet frame, a power battery box assembly and a battery replacing vehicle. The damping piece comprises a platy metal substrate layer, an elastic layer formed on the metal substrate layer and a wear-resistant layer formed on the elastic layer, wherein the area of the metal substrate layer is larger than that of the elastic layer, the metal substrate layer is provided with two or more through mounting holes, and the elastic layer and the wear-resistant layer avoid the mounting holes. The shock absorbing member forms a multi-layer structure, realizes the functional independence of each layer, can be organically and tightly combined into a whole, and has high bonding strength. The mounting area of metal stratum basale is big, and the bolster adopts the metal stratum basale to install fixedly, avoids fastener and elastic layer direct extrusion contact, and the structural strength of metal stratum basale is high, and the fastener locking is firm, avoids appearing the fastener extrusion elastic layer, leads to elastic layer deformation unevenness scheduling problem.

Description

Shock absorbing parts, bottom bracket frame, power battery box assembly and battery replacement vehicle

technical field

The invention relates to the field of automobiles, in particular to a shock absorber, a bottom bracket frame, a power battery box assembly and a battery exchange vehicle.

Background technique

The battery-swapping heavy truck is an important component of new energy vehicles, especially when the battery-swapping set truck is used for short-term coal, ore, port, steel mill, sand and gravel, special line transportation, regional short-term, and port It has obvious advantages in application scenarios such as pouring and in-site transportation. The replaceable battery box structure is used to replace the heavy-duty truck to achieve the effect of strong continuous working ability of the vehicle and zero emission of pollutants, and reduce the cost of using the vehicle.

The battery replacement process of the heavy truck is as follows: the battery replacement robot grabs the battery box on the bottom bracket of the heavy truck, and drives the battery box away from the main body of the vehicle to enter the battery replacement station; the battery replacement robot then grabs the fully charged battery box and assembles it to the bottom of the heavy truck to allow the new battery box to power the vehicle. Wherein, a plurality of rubber pads are installed on the bottom support, and the rubber pads support the frame of the battery box to form a buffer and support structure.

However, the weight of the battery box is more than two tons. Every time the battery box is hoisted by the battery replacement robot, it will impact the rubber pad on the bottom support. Cracks or even breaks, especially the position where the bolt locks the rubber pad is easily broken, resulting in the technical problem that the company needs to frequently replace the rubber pad. The replacement of the rubber pad not only increases the cost of materials and maintenance, but also greatly affects the continuous use time of the battery replacement heavy truck, and increases the overall operating cost and other related issues, so it needs to be improved.

Contents of the invention

In order to solve the problem that the rubber pad is easily damaged, the present invention provides a shock absorber, a bottom support frame, a power battery box assembly and a battery exchange vehicle.

In a first aspect, the present invention provides a shock absorber, the shock absorber includes a plate-shaped metal base layer, an elastic layer formed on the metal base layer, and a wear-resistant layer formed on the elastic layer, the The area of the metal base layer is larger than the area of the elastic layer, and the metal base layer is provided with two or more installation holes through which the elastic layer and the wear-resistant layer avoid the installation holes.

In some embodiments, the shock absorber includes at least one deformation groove that is recessed from the surface of the wear-resistant layer toward the side of the elastic layer, and the deformation groove separates the wear-resistant layer to form at least two wear-resistant layers. grinding area.

In some embodiments, the shock absorbing member is provided with two or more deformation grooves distributed in a staggered manner.

In some embodiments, the groove bottom of the deformation groove is configured as an arc-shaped curved surface, the sum of the thicknesses of the elastic layer and the wear-resistant layer is greater than the depth of the deformation groove, and the depth of the deformation groove is greater than the wear-resistant layer. layer thickness.

In some embodiments, the elastic layer is arranged eccentrically with respect to the side centerline of the metal base layer, wherein the side centerline is the centerline of the metal base layer with respect to the two long sides.

In some embodiments, the thickness of the elastic layer is greater than the thickness of the wear-resistant layer, and the thickness of the elastic layer is greater than the thickness of the metal base layer.

In some embodiments, the shock-absorbing element is long; or, the shock-absorbing element is at least partly bent, and the elastic layer and the wear-resistant layer are arranged along with the bending of the metal base layer.

In a second aspect, the present invention provides a bottom bracket frame for carrying a battery box frame, the bottom bracket frame includes a frame body, at least two reinforcing plates protruding from the frame body at intervals, and the above-mentioned shock absorber part, the metal base layer is locked to the frame main body by a fastener, the height of the shock absorber is greater than the height of the reinforcing plate protruding from the frame main body, and the top pressure bearing surface of the reinforcing plate It is located within the elastic deformation range of the shock absorber.

In some embodiments, the height of the shock-absorbing element beyond the reinforcing plate is in a range of 2 mm to 10 mm.

In some embodiments, at least one shock absorber is distributed on both sides of the reinforcing plate.

In some embodiments, the reinforcing plate is located in the extension direction of the upright column, wherein the upright column is a columnar structural member perpendicular to the plane of the frame main body of the battery box frame.

In some embodiments, the shock absorber is provided at a corner of the frame body.

In a third aspect, the present invention provides a power battery box assembly, including a battery box frame and the above-mentioned bottom bracket frame, where the battery box frame is erected on the reinforcement plate and abuts against the shock absorber.

In a fourth aspect, the present invention provides a battery swapping vehicle, including a vehicle body and the power battery box assembly as described above, and the bottom bracket frame is fixed to the vehicle body.

In order to solve the problem that the rubber pad is easily damaged, the present invention has the following advantages: the shock absorber forms a multi-layer structure, realizes the independent function of each layer, and can be organically and tightly combined into a whole with high bonding strength. The installation area of the metal base layer is large, and the shock absorbing parts are installed and fixed by the metal base layer to avoid direct extrusion contact between the fastener and the elastic layer, and the structural strength of the metal base layer is high, and the fasteners are locked firmly to avoid fastening Parts squeeze the elastic layer, resulting in uneven deformation of the elastic layer and other problems. The wear-resistant layer is arranged on the top of the elastic layer, which has good wear-resistant performance and is not easy to be damaged, so as to improve the shock-resistant performance of the shock-absorbing parts and prolong the service life. The elastic layer has a good elastic deformation energy absorption effect, and is the main structure constituting the elastic deformation of the shock absorber.

Description of drawings

FIG. 1 shows a schematic perspective view of a shock absorber in some embodiments;

Fig. 2 shows a schematic cross-sectional structural view of a shock absorber in some embodiments;

Figure 3 shows a schematic top view of a shock absorber in some embodiments;

Figure 4 shows a schematic diagram of a curved structure shock absorber of some embodiments;

Figure 5 shows a schematic view of the bottom bracket frame of some embodiments;

Figure 6 shows a schematic diagram of the assembly of the battery box frame to the bottom bracket frame in some embodiments;

Fig. 7 shows a schematic front view of the assembly of the battery box frame to the bottom bracket frame in some embodiments.

In the figure, 10, metal base layer; 11, installation hole; 20, elastic layer; 21, first side; 22, second side; 23, avoidance groove; 30, wear-resistant layer; 31, deformation groove; 311, Transverse groove; 312, longitudinal groove; 32, wear-resistant area; 33, first leg edge; 34, second leg edge; 35, rectangular support area; 40, bottom support frame; 41, reinforcing plate; 42, frame main body; 50. Battery box frame; 51. Column; 100. Shock absorber; 101. Fastener.

Detailed ways

The subject matter of the invention will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those of ordinary skill in the art to better understand and thus implement the content of the present invention, and do not imply any limitation on the scope of the present invention.

As used herein, the term "comprising" and variations thereof are to be read as open-ended terms meaning "including but not limited to". The term "based on" is to be read as "based at least in part on". The terms "one embodiment" and "an embodiment" are to be read as "at least one embodiment". The term "another embodiment" is to be read as "at least one other embodiment".

As shown in FIGS. 1 to 5 , the present invention proposes a shock absorber 100 . The shock absorber 100 includes a plate-shaped metal base layer 10 , an elastic layer 20 formed on the metal base layer 10 , and laminated and formed on the elastic layer 20 . wear-resistant layer 30. The metal base layer 10 is made of a metal plate, for example, the metal base layer 10 is made of a metal plate such as carbon steel or stainless steel. The elastic layer 20 and the wear-resistant layer 30 are formed on the surface of the metal base layer 10 by a molding process, the overall bonding tightness is high, the connection strength is high, and the problem of delamination due to impact is not easy to occur.

The shock absorber 100 is locked to the bottom bracket frame 40 through the metal base layer 10, wherein the area of the metal base layer 10 is larger than the area of the elastic layer 20, so that the fastener 101 avoids the elastic layer 20, thereby locking the shock absorber 100 . Specifically, the area of the elastic layer 20 is smaller than that of the metal base layer 10 , and a space-avoiding area is formed between the elastic layer 20 and the metal base layer 10 . The metal base layer 10 is provided with two or more installation holes 11 penetrating through, and the installation holes 11 are used to cooperate with the fasteners 101 to fix the shock absorber 100 . The installation hole 11 is located in the avoidance area of the metal base layer 10 , and the elastic layer 20 and the wear-resistant layer 30 avoid the installation hole 11 . Wherein, the screws pass through the mounting holes 11 and are locked to the bottom bracket frame 40 to fix the shock absorber 100 to the bottom bracket frame 40 .

During the installation process of the shock absorber 100 , the bolt heads of the fasteners 101 avoid the elastic layer 20 , so as to prevent the stress of the bolt heads from being transmitted to the elastic layer 20 during the extrusion process, and reduce the factors of damage to the elastic layer 20 . The fastener 101 directly fixes the metal base layer 10 and the bottom bracket frame 40. When the battery box impacts the shock absorber 100, the elastic layer 20 and the wear-resistant layer 30 only bear pressure, and the elastic layer 20 absorbs energy through elastic deformation, thereby The service life of the shock absorber 100 is greatly improved.

Preferably, the bolt head of the fastener 101 is lower than the sum of the heights of the elastic layer 20 and the wear-resistant layer 30, so that the connection between the fastener 101 and the metal base layer 10 will not affect the elastic deformation range of the shock absorber 100, It can also have reliable connectivity.

The elastic layer 20 is combined with the metal base layer 10. The elastic layer 20 has a good elastic deformation energy absorption effect, and is the main structure constituting the elastic deformation of the shock absorber 100. Optionally, the elastic layer 20 is configured to be made of rubber material. Optionally, the thickness of the wear-resistant layer 30 is smaller than that of the elastic layer 20 , so as to keep the elastic layer 20 with good elastic deformation ability and sufficient deformation space, and reduce the amount of material used for the wear-resistant layer 30 . The wear-resistant layer 30 is disposed on the top of the elastic layer 20 , has good wear-resistant performance and is not easy to be damaged, so as to improve the impact resistance of the shock absorber 100 and prolong the service life.

As shown in FIGS. 1 to 4 , the wear-resistant layer 30 is disposed on the top surface of the elastic layer 20 , wherein the area of the wear-resistant layer 30 is smaller than or equal to the area of the top of the elastic layer 20 . For example, the wear-resistant layer 30 can be configured as a plane, a non-slip surface with concave-convex patterns, or a multi-face structure with separation grooves.

In some embodiments, the wear-resistant layer 30 can be arranged as a whole plane to form a plane support structure. Wherein, the elastic layer 20 deforms under the action of pressure and protrudes toward the periphery of the elastic layer 20 . In this embodiment, the deformation of the elastic layer 20 after being compressed is mainly concentrated in the outer periphery in the deployment direction, and the deformation in the middle is less.

In a preferred embodiment, the shock absorber 100 includes at least one deformation groove 31 that is recessed from the surface of the wear-resistant layer 30 toward the side of the elastic layer 20, and the deformation groove 31 separates the wear-resistant layer 30 to form at least two wear-resistant regions. 32. The deformation grooves 31 are distributed on the top of the shock absorber 100 to separate the wear-resistant layer 30 and part of the elastic layer 20 . The deformation groove 31 extends to the elastic layer 20. When the shock absorber 100 is compressed, the elastic layer 20 undergoes elastic deformation, wherein a part of the elastic layer 20 is deformed and protrudes toward the outer peripheral wall, and the other part is deformed toward the inside of the deformation groove 31. deformation. The deformation groove 31 absorbs part of the elastic deformation when the elastic layer 20 is elastically deformed, and the multiple wear-resistant regions 32 maintain a balanced force, and can support the bottom bracket frame 40 at the same time, so as to maintain the structural stability and stability of the wear-resistant layer 30 and the elastic layer 20. service life. In this embodiment, the arrangement of the deformation groove 31 can expand the release direction of the deformation of the elastic layer 20, further improve the balance of deformation, and avoid the concentration of internal elastic force. Preferably, the transverse section of the elastic layer 20 is approximately trapezoidal, so as to form a pressure-bearing structure that gradually increases from top to bottom.

The deformation grooves 31 are distributed on the top of the shock absorber 100 , and their distribution positions can be flexibly adjusted according to the shape of the shock absorber 100 and the pressure-bearing parts. Optionally, the shock absorber 100 is in the shape of a strip. The shock absorber 100 is a straight strip structure, and the shock absorber 100 can be spaced apart along the length direction of the bottom bracket frame 40 . Optionally, one deformation groove 31 is provided and divides the wear-resistant layer 30 into two wear-resistant regions 32 symmetrically. For example, the deformation groove 31 is arranged perpendicular to the length direction of the wear-resistant layer 30 . Optionally, multiple deformation grooves 31 are provided, and the multiple deformation grooves 31 form an intersecting structure. Optionally, the deformation groove 31 includes at least one transverse groove 311 and at least one longitudinal groove 312 distributed alternately, and the transverse groove 311 and the longitudinal groove 312 are cross-connected, so as to construct different deformation release directions of the elastic layer 20 . For example, the transverse grooves 311 and the longitudinal grooves 312 intersect to form a cross structure, a grid structure, a font structure and other interlaced structures.

Preferably, the sum of the thicknesses of the elastic layer 20 and the wear-resistant layer 30 is greater than the depth of the deformation groove 31 , and the depth of the deformation groove 31 is greater than the thickness of the wear-resistant layer 30 . The deformation groove 31 isolates the wear-resistant layer 30 and separates part of the elastic layer 20, so that the deformation of the shock absorber 100 is mainly concentrated in the deformation groove 31 and the outer periphery of the elastic layer 20, and the deformation area is highly controllable. 40 has a high degree of support and fit.

Preferably, the groove bottom of the deformation groove 31 is configured as an arc-shaped curved surface, and the bottom of the deformation groove 31 is arranged in an arc shape, which can realize the conventional effects of convenient demoulding and avoiding stress concentration. In this embodiment, setting the deformation groove 31 as an arc-shaped curved surface can further improve the controllability of the release direction of the deformation of the elastic layer 20 . Wherein, the elastic layer 20 of the shock absorber 100 deforms under the action of the plane pressure of the battery box, wherein the two inner side walls of the deformation groove 31 bulge into the groove, and the circular arc at the bottom expands the deformation, thereby lowering the middle part of the deformation groove 31. relative size.

As shown in Fig. 3 to Fig. 5, the shock absorber 100 is installed on the straight beam of the bottom bracket frame 40, further, the corner position of the bottom bracket frame 40 is installed with the shock absorber 100, and the bottom bracket frame 40 adopts a shock absorber at the corner position. The shock element 100 provides support and shock absorption for the battery box. In some embodiments, the shock absorber 100 is at least partially bent, and the bent structure can be adjusted according to the use layout of the bottom bracket frame 40. For example, the shock absorber 100 is arranged in an "L"-shaped structure with different angles, such as the shock absorber 100 is configured as a right-angle structure, an obtuse-angle structure or an acute-angle structure. Wherein, the elastic layer 20 and the wear-resistant layer 30 are bent along with the metal base layer 10 to cover most of the surface of the metal base layer 10 .

In some embodiments, the shock absorber 100 includes intersecting first legs 33 and second legs 34 , and both the metal base layer 10 and the elastic layer 20 form a bent structure. The deformation groove 31 includes at least partially intersecting transverse grooves 311 and longitudinal grooves 312, the transverse grooves 311 are perpendicular to the long side direction of the first leg side 33 and the long side direction of the second leg side 34, and the longitudinal grooves 312 are parallel to the first leg side 33 and the longitudinal direction of the second leg side 34. Preferably, the transverse groove 311 of the first leg edge 33 is flush with the edge of the second leg edge 34, and the transverse groove 311 of the second leg edge 34 is flush with the edge of the first leg edge 33, so that the shock absorber 100 The corner positions form a rectangular support area 35 . When the battery box frame 50 is crimped on the bottom bracket frame 40, the corner of the battery box frame 50 is crimped on the shock absorber 100, the rectangular support area 35 supports the corner position of the battery box frame 50, the first leg edge 33 and the second The two foot plates respectively support two intersecting frame structural members of the battery box frame 50 . Optionally, the transverse groove 311 of the first leg edge 33 and/or the transverse groove 311 of the second leg edge 34 are provided with a counterbore. The groove 23 forms a counterbore. One of the counterbores is locked to the bottom bracket frame 40 by a screw, and the other counterbore is not locked to avoid the welding seam on the bottom bracket frame 40 . Preferably, both the first leg side 33 and the second leg side 34 are provided with counterbore holes, so as to improve the uniformity of the product.

As shown in FIGS. 3 to 5 , the elastic layer 20 is molded on the metal base layer 10 , and the two form an integrated structure. In some embodiments, the center of the elastic layer 20 is arranged corresponding to the center of the metal base layer 10 , and the elastic layer 20 and the metal base layer 10 have an axisymmetric structure, which improves the force balance of the shock absorber 100 . Optionally, the elastic layer 20 is located in the middle of the metal base layer 10 , and the installation holes 11 are distributed on both sides of the elastic layer 20 . And/or, the installation hole 11 is located in the surrounding area of the elastic layer 20 , and the elastic layer 20 is provided with a space around the installation hole 11 . The centerline of the mounting hole 11 coincides with the centerline of the elastic layer 20 to form a centrally symmetrical structure in both the transverse and longitudinal directions.

In a preferred embodiment, the elastic layer 20 is arranged eccentrically with respect to the side centerline of the metal base layer 10 , wherein the side centerline is the centerline of the metal base layer 10 opposite to the two long sides. The metal base layer 10 has a strip structure or a right-angle bending structure, and correspondingly, the elastic layer 20 extends along the length direction of the metal base layer 10 . The side centerline is the symmetrical centerline in the long side direction of the metal base layer 10 , which changes along the length or angle of the metal base layer 10 . Specifically, the distance between the first side 21 of the elastic layer 20 and the first side 21 of the metal base layer 10 is set to a first value, and the distance between the second side 22 of the elastic layer 20 and the second side 22 of the metal base layer 10 is set to is a second value, the first value is less than the second value. Wherein the first value is greater than or equal to zero. As preferably, the first value is equal to zero, then the first side 21 of the elastic layer 20 intersects with the edge of the first side 21 of the metal base layer 10, and the second side 22 of the elastic layer 20 is spaced from the edge of the second side 22 of the metal base layer 10 set to form an eccentric structure. When the shock absorber 100 is assembled to the bottom bracket frame 40 , the edge of the first side 21 of the elastic layer 20 is close to or flush with the outer edge of the bottom bracket frame 40 .

In some embodiments, the thickness of the elastic layer 20 is greater than that of the wear-resistant layer 30 , and the wear-resistant layer 30 is made of wear-resistant material, which is compounded on the top of the elastic layer 20 . The main function of the wear-resistant layer 30 is to improve the surface wear-resistant durability and the stability of the top surface of the shock absorber 100. The wear-resistant layer 30 has a small thickness, so that the main elastic deformation areas can be concentrated on the elastic layer 20, thereby achieving surface resistance. The thickness of the elastic layer 20 is increased on the basis of abrasiveness requirements, and the elastic deformation range is expanded within the limited total height of the shock absorber 100 .

Further, the thickness of the elastic layer 20 is greater than the thickness of the metal base layer 10. The main function of the metal base layer 10 is to reliably connect the shock absorber 100 to the bottom bracket frame 40. The connection between the shock absorber 100 and the bottom bracket frame 40 has both metal The strength of the connection also has a good damping effect of the elastic layer 20 . The thickness of the metal base layer 10 is small, so that the overall elastic deformation space of the elastic layer 20 is sufficient.

As shown in FIGS. 3 to 7 , in some embodiments, the shock absorber 100 disclosed in the above embodiments is applied to the bottom bracket frame 40 , and the bottom bracket frame 40 is used to carry the battery box frame 50 . The battery box is an energy storage unit, including a battery box frame 50 and battery packs stacked layer by layer along the height direction of the battery box frame 50. There are two or more battery packs, and each battery pack is provided with two battery units. The battery box frame 50 includes uprights 51 distributed at intervals, multiple sets of crosspieces and longitudinal pieces connecting the uprights 51 , and the crosspieces and longitudinal pieces form the battery box frame 50 into a multi-layer structure.

Wherein, the bottom bracket frame 40 includes a frame body 42, at least two reinforcing plates 41 protruding from the frame body 42 at intervals, and shock absorbers 100 as disclosed in the above embodiments, and the shock absorbers 100 are distributed on the frame body 42 for carrying batteries. The installation surface of the box frame 50 is the surface of the frame body 42 for carrying and supporting the battery box frame 50 .

Wherein, the metal base layer 10 of the shock absorber 100 is locked to the frame main body 42 through fasteners 101 , wherein the metal base layer 10 can be locked together by two or more fasteners 101 , and the locking effect is good. The shock absorber 100 is installed on the installation surface. The height of the shock absorber 100 is greater than the height of the reinforced plate 41 protruding from the frame body 42 . The top bearing surface of the reinforced plate 41 is located within the elastic deformation range of the shock absorber 100 .

The reinforcing plate 41 is fixed on the frame main body 42, and the reinforcing plate 41 is a boss structure protruding from the frame main body 42, wherein the reinforcing plate 41 is used to support the rigid support part of the battery box frame 50, and the shock absorber 100 is matched with the reinforcing plate 41 An auxiliary portion of the battery box frame 50 is supported. In the unpressurized state, the height of the shock absorber 100 is greater than the height of the reinforcing plate 41. When the battery box frame 50 is assembled to the bottom support frame 40, the battery box frame 50 is first crimped on the wear-resistant layer 30 of the shock absorber 100, And drive the elastic layer 20 to elastically deform. The shock absorber 100 continues to deform until the battery box frame 50 abuts against the reinforcement plate 41, then there is elastic preload between the battery box frame 50 and the shock absorber 100, and the battery box frame 50 is supported by the reinforcement plate 41, thereby maintaining stable mounting position.

In some embodiments, the height of the shock absorbing member 100 beyond the reinforcing plate 41 is within 2 mm to 10 mm, so as to meet the preliminary shock absorption of the shock absorbing member 100 on the battery box frame 50 and maintain good shape stability. Preferably, the height of the shock absorber 100 beyond the reinforcing plate 41 is set to 2mm, 3mm, 5mm, 8mm, 10mm, etc.

Preferably, at least one shock absorber 100 is distributed on both sides of the reinforcement board 41 to maintain a balanced force on both sides of the reinforcement board 41 and achieve a good shock absorption effect. Optionally, the bottom bracket frame 40 has a rectangular frame structure, and the reinforcing plate 41 is fixed on the rectangular side of the bottom bracket frame 40 . Preferably, two reinforcing plates 41 are arranged at intervals on the long side of the bottom bracket frame 40 , and at least one shock absorber 100 is distributed on both sides of each reinforcing plate 41 . The shock absorber 100 is spaced apart from the reinforcing plate 41 to expand the supporting area of the bottom bracket frame 40 to the battery box frame 50 .

Preferably, the reinforcing plate 41 is located in the extension direction of the upright column 51 , wherein the upright column 51 is a columnar structural member perpendicular to the plane of the frame main body 42 of the battery box frame 50 . The column 51 is the part where the battery box frame 50 mainly transmits pressure. In particular, the multi-layer battery packs of the battery box frame 50 are crimped on the reinforcing plate 41 through the column 51 to form a stable support structure. Further, shock absorbers 100 are provided at the corners of the frame body 42 to keep all angles of the battery box frame 50 supported.

In an optional embodiment, two reinforcing plates 41 are installed on each rectangular long side of the frame body 42, and the reinforcing plates 41 correspond to the two columns 51 in the middle of the battery box frame 50, and each rectangular long side Three shock absorbers 100 are installed, and the shock absorbers 100 space apart the two reinforcement plates 41 and maintain a balanced distribution. The shock absorbers 100 are arranged at the corners of the frame main body 42 , and the shock absorbers 100 at the corners and the shock absorbers 100 on the long sides of the rectangle jointly build a buffer matrix to jointly absorb shock and buffer the battery box frame 50 .

The bottom bracket frame 40 disclosed in the above embodiment is applied to the power battery box assembly, wherein the power battery box assembly includes the battery box frame 50 and the bottom bracket frame 40 disclosed in the above embodiment, and the battery box frame 50 is erected on the reinforcement plate 41 And abut against the shock absorber 100 .

The present invention also discloses a battery exchange vehicle, which includes a vehicle body and the power battery box assembly disclosed in the above embodiments, and the bottom bracket frame 40 is fixed to the vehicle body.

The foregoing description of an implementation of the disclosure has been presented for purposes of illustration and description. The foregoing description is not intended to be exhaustive or to limit the disclosure to the precise form disclosed, and variations and modifications are possible in light of the above teachings or may be acquired from practice of the disclosure. The embodiments were chosen and described in order to illustrate the principles of the disclosure and its practical application, to enable others skilled in the art to utilize the disclosure in various embodiments and with various modifications as are suited to the particular use contemplated.

Claims (14)

1. The utility model provides a shock attenuation piece, its characterized in that, shock attenuation piece includes platelike metal substrate layer, shaping in the elastic layer of metal substrate layer and shaping in the wearing layer of elastic layer, the area of metal substrate layer is greater than the area of elastic layer, the metal substrate layer sets up two or more mounting holes that run through, elastic layer and wearing layer evade the mounting hole.

2. The cushioning member according to claim 1, wherein the cushioning member comprises at least one deformation groove recessed from the surface of the wear layer toward the side of the elastic layer, the deformation groove separating the wear layer to form at least two wear areas.

3. The shock absorbing member of claim 2, wherein the shock absorbing member is provided with two or more deformation grooves distributed alternately.

4. The cushioning member according to claim 2, wherein the groove bottom of the deformation groove is configured as an arc-shaped curved surface, the sum of the thicknesses of the elastic layer and the wear-resistant layer is larger than the depth of the deformation groove, and the depth of the deformation groove is larger than the thickness of the wear-resistant layer.

5. The cushioning member according to claim 1, wherein the elastic layer is disposed eccentrically with respect to a side centerline of the metal base layer, wherein the side centerline is a centerline of the metal base layer opposite the two long sides.

6. The cushioning member of claim 1, wherein the elastomeric layer has a thickness greater than the wear layer thickness and the elastomeric layer has a thickness greater than the metal base layer thickness.

7. The shock absorbing member of claim 6, wherein the shock absorbing member is elongated; or, the damping element is at least partially bent, and the elastic layer and the wear-resistant layer are arranged along with the bending of the metal substrate layer.

8. The utility model provides a collet frame for bear battery box frame, its characterized in that, collet frame includes the frame main part, separates two piece at least reinforcing plates of protruding locating the frame main part and the shock attenuation piece of any one of claims 1-7, the metal stratum basale passes through the fastener lock solid in the frame main part, the height of shock attenuation piece is greater than the reinforcing plate protrusion the height of frame main part, the top pressure-bearing face of reinforcing plate is located the elastic deformation scope of shock attenuation piece.

9. The shoe frame of claim 8, wherein the shock absorbing member is located at a height range of 2mm to 10mm beyond the reinforcing plate.

10. The shoe frame of claim 8 wherein at least one of said shock absorbing members is disposed on each side of said reinforcing plate.

11. The shoe frame of claim 8, wherein the reinforcement plate is positioned in an extension direction of a pillar, wherein the pillar is a columnar structure of the battery box frame perpendicular to a plane of the frame body.

12. The shoe frame of claim 8, wherein the shock absorbing members are provided at corners of the frame body.

13. A power battery box assembly comprising a battery box frame and a shoe frame according to any one of claims 8-12, the battery box frame being mounted to the stiffener and abutting the shock absorber.

14. A battery exchange vehicle comprising a vehicle body and the power cell box assembly of claim 13, the shoe frame being secured to the vehicle body.

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