Mounting device and battery module with same

Abstract

The utility model provides a mounting device and a battery module with the same, the mounting device is used for mounting a first to-be-protected piece and a second to-be-protected piece, the mounting device comprises: a frame body, the frame body is provided with a first mounting cavity and a second mounting cavity, the first to-be-protected piece is arranged in the first mounting cavity, and the second to-be-protected piece is arranged in the second mounting cavity; wherein at least one of the bottom end and the top end of the frame body is provided with two oppositely-arranged supporting foot stools, the upper surfaces of the two supporting foot stools are opposite to the end, located in the second installation cavity, of the second to-be-protected piece, a plurality of first buffering concave cavities are formed in the supporting foot stools, and at least part of the frame body is made of elastic materials. The anti-collision battery module effectively solves the problem that the anti-collision performance of the battery module in the prior art is not comprehensive enough.

Description

TECHNICAL FIELD

[0001] The utility model relates to power battery module technical field, specifically, relate to a mounting device and have its battery module. BACKGROUND

[0002] At present, with the use of new energy walking tools such as electric bicycle, shared bicycle and scooter more and more widely, the safety performance problem of battery pack as its power source is also valued. In the design process of battery pack, while meeting the performance requirements such as extrusion, vibration, impact and drop of the whole pack of relevant regulations, it is also necessary to meet the economic performance such as lightweight and high utilization of battery pack in limited space.

[0003] In the prior art, when designing the battery pack, the way of setting the collision energy-absorbing device outside the battery pack is usually adopted to improve the drop resistance performance of the battery pack.

[0004] However, the collision energy-absorbing device set outside the battery pack usually only protects the battery module, and ignores the protection of the PCB board, and the damage of the PCB board will cause the problems such as damage of related components, short circuit, open circuit and loss of function of the battery pack, and even cause safety problems in serious cases. At the same time, setting the collision energy-absorbing device outside the battery pack can easily lead to the reduction of battery module space and the reduction of battery pack energy density, and also increase the material cost of battery pack and the working time of workers. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to provide a mounting device and a battery module with the same, so as to solve the problem of insufficient comprehensive anti-collision performance of the battery module in the prior art.

[0006] In order to achieve the above purpose, according to one aspect of the utility model, a mounting device is provided for mounting a first to-be-protected member and a second to-be-protected member, the mounting device comprising: a frame body having a first mounting cavity and a second mounting cavity, the first to-be-protected member being arranged in the first mounting cavity, and the second to-be-protected member being arranged in the second mounting cavity; wherein at least one end of the bottom end and the top end of the frame body is provided with two oppositely arranged support legs, the upper surfaces of the two support legs are arranged opposite to the end of the second to-be-protected member arranged in the second mounting cavity, a plurality of first buffer cavities are arranged on the support legs, and at least part of the frame body is made of elastic material.

[0007] Further, the mounting device further comprises a first buffer structure, the first buffer structure is arranged on the upper surface of the support foot, wherein the first buffer structure has an initial position, when the first buffer structure is in the initial position, the first buffer structure has a preset gap with the second to-be-protected member, when the support foot collides with the support base, the support foot is deformed under the action of the first buffer cavity to make the first buffer structure contact with the second to-be-protected member.

[0008] Further, the first buffer structure is in a plate shape, a plurality of protrusions are arranged on the side of the first buffer structure away from the support foot, and the plurality of protrusions are arranged in the length direction or the width direction of the first buffer structure.

[0009] Further, the mounting device further comprises a second buffer structure, the second buffer structure is arranged on the bottom of the frame body, so that the bottom of the frame body contacts with the support base through the second buffer structure.

[0010] Further, the second buffer structure comprises: a first buffer member, a plurality of through holes are arranged on the first buffer member, the plurality of through holes are divided into a plurality of groups, each group of through holes comprises a plurality of through holes, the plurality of groups of through holes are distributed in the length direction of the bottom of the frame body, and the plurality of through holes in each group of through holes are distributed in the width direction of the bottom of the frame body. A second buffer member is arranged around the first buffer member, wherein the relationship between the height H1 of the first buffer member and the height H2 of the second buffer member satisfies: H1 < H2.

[0011] Further, the second buffer member comprises a first buffer segment and a second buffer segment, the first buffer segment is arranged around the first buffer member, and the second buffer segment has a preset distance from the first buffer member.

[0012] Further, the bottom of the frame body is provided with a communication hole, and the communication hole is in communication with the through hole.

[0013] Further, the mounting device further comprises a second buffer cavity, the second buffer cavity is arranged on the frame body, and a plurality of second buffer cavities are arranged in the length direction or the width direction of the frame body.

[0014] Further, the first to-be-protected member comprises a plurality of battery cells, the first mounting cavity comprises a plurality of mounting portions, the plurality of mounting portions are arranged one by one corresponding to the plurality of battery cells, and the battery cells are arranged in the corresponding mounting portions.

[0015] According to another aspect of the present application, a battery module is provided, comprising the above-mentioned mounting device and battery elements, the battery elements comprising busbars and wire harnesses, and the busbars and wire harnesses are mounted on the mounting device.

[0016] The technical scheme of the utility model is used for installing the first and second to-be-protected members, the frame body of the installation device has a first installation cavity and a second installation cavity, the first to-be-protected member is arranged in the first installation cavity, and the second to-be-protected member is arranged in the second installation cavity. At least one of the bottom end and the top end of the frame body is provided with two oppositely arranged support legs, the upper surfaces of the two support legs are arranged opposite to the end of the second to-be-protected member arranged in the second installation cavity, a plurality of first buffer cavities are arranged on the support legs, and at least part of the frame body is made of elastic material. In this way, when the installation device falls to the supporting base surface, if the end of the installation device collides with the base surface, the arrangement mode of the frame body can buffer the impact force between the supporting base surface and the installation device, thereby protecting the first and second to-be-protected members. Meanwhile, if the installation device collides with the base surface at a certain angle, the arrangement mode of the first buffer cavity can absorb the collision energy between the supporting base surface and the installation device, further buffers the impact force between the supporting base surface and the installation device, avoids damage to the second to-be-protected member, realizes further protection of the second to-be-protected member, prolongs the service life of the second to-be-protected member, improves the safety of the second to-be-protected member, thereby improving the anti-collision performance of the installation device, and further solves the problem that the anti-collision performance of the battery module in the prior art is not comprehensive. Meanwhile, the above arrangement reduces the weight of the installation device, improves the space utilization rate of the installation device, thereby improving the energy density of the battery, reduces the production cost, improves the work efficiency of the workers, and further improves the economy of the installation device. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings accompanying the specification of this application form a part thereof, serve to provide further understanding of the present application, and together with the description of the exemplary embodiments of the present application, serve to explain the present application. In the drawings:

[0018] Figure 1 An overall structure schematic view of an embodiment of a battery module according to the utility model is shown;

[0019] Figure 2 An enlarged schematic view of A in Figure 1

[0020] Figure 3 An overall structure front view of a second buffer structure of an installation device according to the utility model is shown;

[0021] Figure 4 An overall structure explosion schematic view of an embodiment of a battery module according to the utility model is shown.

[0022] In the above drawings, the following reference signs are used:

[0023] ​1, first to be protected; 101, the cell; 2, the second to be protected; 3, support base surface; 4, busbar; 5, wiring harness;

[0024] 10, frame body; 11, first mounting cavity; 111, mounting portion; 12, second mounting cavity; 13, mounting opening;

[0025] 20, support foot; 21, first buffer cavity;

[0026] 30, first buffer structure; 31, protrusion;

[0027] 40, second buffer structure; 41, first buffer; 411, through hole; 42, second buffer; 421, first buffer section; 422, second buffer section;

[0028] 50, communication hole;

[0029] 60, second buffer cavity. DETAILED DESCRIPTION

[0030] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as generally understood by those skilled in the art to which the present application belongs.

[0032] In the present application, unless otherwise stated, the orientation words such as "up, down" are generally directed to the direction shown in the drawings, or to the vertical, perpendicular or gravity direction; similarly, for the convenience of understanding and description, "left, right" is generally directed to the left and right shown in the drawings; "inner, outer" refers to the inner and outer relative to the contour of each component, but the above orientation words are not used to limit the present application.

[0033] In order to solve the problem of insufficient comprehensive performance of battery module anti-collision performance in the prior art, the present application provides a mounting device and a battery module with the same.

[0034] As Figure 1 and Figure 4As shown, the mounting device is used for mounting the first and second to-be-protected members 1 and 2, and the mounting device comprises a frame body 10. The frame body 10 has a first mounting cavity 11 and a second mounting cavity 12, the first to-be-protected member 1 is arranged in the first mounting cavity 11, and the second to-be-protected member 2 is arranged in the second mounting cavity 12. At least one of the bottom end and the top end of the frame body 10 is provided with two oppositely arranged support legs 20, the upper surfaces of the two support legs 20 are arranged opposite to the end of the second to-be-protected member 2 located in the second mounting cavity 12, a plurality of first buffer cavities 21 are arranged on the support legs 20, and at least part of the frame body 10 is made of elastic material.

[0035] The technical scheme of the embodiment is applied to the mounting device used for mounting the first and second to-be-protected members 1 and 2, and the frame body 10 of the mounting device has the first mounting cavity 11 and the second mounting cavity 12, the first to-be-protected member 1 is arranged in the first mounting cavity 11, and the second to-be-protected member 2 is arranged in the second mounting cavity 12. At least one of the bottom end and the top end of the frame body 10 is provided with two oppositely arranged support legs 20, the upper surfaces of the two support legs 20 are arranged opposite to the end of the second to-be-protected member 2 located in the second mounting cavity 12, a plurality of first buffer cavities 21 are arranged on the support legs 20, and at least part of the frame body 10 is made of elastic material. In this way, when the mounting device falls to the supporting base surface 3, if one end of the mounting device collides with the base surface, the arrangement mode of the frame body 10 can buffer the impact force between the supporting base surface 3 and the mounting device, thereby protecting the first and second to-be-protected members 1 and 2. Meanwhile, if the mounting device collides with the base surface at a certain angle, the arrangement mode of the first buffer cavities 21 can absorb the collision energy between the supporting base surface 3 and the mounting device, thereby further buffering the impact force between the supporting base surface 3 and the mounting device, avoiding damage to the second to-be-protected member 2, achieving further protection of the second to-be-protected member 2, prolonging the service life of the second to-be-protected member 2, and improving the safety of the second to-be-protected member 2, thereby improving the anti-collision performance of the mounting device, and further solving the problem that the anti-collision performance of the battery module is not comprehensive in the prior art. Meanwhile, the above arrangement can reduce the weight of the mounting device, improve the space utilization of the mounting device, thereby improving the energy density of the battery, and on the other hand, can reduce the production cost, improve the work efficiency of the workers, and further improve the economy of the mounting device.

[0036] In the embodiment, the first to-be-protected member 1 is a battery.

[0037] In the embodiment, the second to-be-protected member 2 is a PCB.

[0038] In the embodiment, the second to-be-protected member 2 is connected to the frame body 10 through a plurality of connecting members.

[0039] Specifically, the connecting pieces are bolts, and the number of the connecting pieces is six.

[0040] It should be noted that the number of the connecting pieces is not limited to this, and can be adjusted according to specific working conditions and use requirements. Alternatively, the number of the connecting pieces is two, or three, or five, or eight, or nine, or more.

[0041] In this embodiment, the first buffer cavities 21 are arranged through the support feet 20, so as to further reduce the weight of the mounting device.

[0042] Specifically, the shape of the first buffer cavities 21 is one of a triangle, a quadrilateral, and a polygon.

[0043] In this embodiment, the number of the first buffer cavities 21 is three. Among them, two first buffer cavities 21 are arranged in a quadrilateral shape, and one first buffer cavity 21 is arranged in a triangular shape, and the first buffer cavity 21 arranged in a triangular shape is located between the two first buffer cavities 21 arranged in a quadrilateral shape. In this way, the above arrangement improves the buffering performance of the first buffer cavities 21, improves the absorption efficiency of the collision energy between the support base surface 3 and the mounting device by the first buffer cavities 21, and further improves the anti-collision performance of the mounting device.

[0044] Specifically, the angle A of the triangle is in the range of 50°≤A≤70°.

[0045] Specifically, the distance L1 between the three buffer cavities is in the range of 0.8mm≤L1≤1.2mm.

[0046] It should be noted that the number of the first buffer cavities 21 is not limited to this, and can be adjusted according to specific working conditions and use requirements. Alternatively, the number of the first buffer cavities 21 is two, or four, or five, or eight, or nine, or more.

[0047] In this embodiment, the edges of the frame body 10 are chamfered, and the edges of the frame body 10 are weakened. In this way, when the mounting device falls at a certain angle, the above arrangement improves the buffering efficiency of the frame body 10 and improves the buffering performance of the frame body 10.

[0048] In this embodiment, the frame body 10 is made of an elastic material.

[0049] Specifically, the frame body 10 is made of ABS engineering plastic alloy to improve the impact resistance of the frame body 10.

[0050] As shown in FIG. 1, the mounting device comprises a support base surface 3 and a frame body 10. Figure 1 and Figure 2As shown, the mounting device further comprises a first buffer structure 30 arranged on the upper surface of the support foot 20, wherein the first buffer structure 30 has an initial position, when the first buffer structure 30 is in the initial position, the first buffer structure 30 has a preset gap with the second object to be protected 2, when the support foot 20 collides with the support surface 3, the support foot 20 is deformed under the action of the first buffer cavity 21 to make the first buffer structure 30 contact the second object to be protected 2. In this way, the above arrangement makes the first buffer structure 30 further buffers the impact force between the support surface 3 and the second object to be protected 2, absorbs the impact energy between the support surface 3 and the second object to be protected 2, improves the safety of the second object to be protected 2, and further improves the anti-collision performance of the mounting device.

[0051] In the embodiment, the first buffer structure 30 is foam. In this way, the above arrangement improves the buffering efficiency of the first buffer structure 30 on the one hand, and improves the protection of the second object to be protected 2; on the other hand, reduces the weight of the mounting device, improves the space utilization of the mounting device and the energy density of the battery. At the same time, the above arrangement also reduces the production cost and improves the economy of the mounting device.

[0052] Specifically, the first buffer structure 30 is provided with a back glue on the side close to the support foot 20, and the first buffer structure 30 is adhered to the upper surface of the support foot 20 by the back glue.

[0053] Optionally, the first buffer structure 30 is adhered to the upper surface of the support foot 20 by glue.

[0054] As shown in the figure, Figure 2 The first buffer structure 30 is plate-shaped, and the side of the first buffer structure 30 away from the support foot 20 is provided with a plurality of protrusions 31, and the plurality of protrusions 31 are arranged in the length direction or the width direction of the first buffer structure 30. In this way, the above arrangement makes the first buffer structure 30 contact the second object to be protected 2 through the plurality of protrusions 31, disperses the impact force between the support surface 3 and the second object to be protected 2, further improves the buffering performance of the first buffer structure 30, and further ensures the safety of the second object to be protected 2.

[0055] In the embodiment, the number of protrusions 31 is eleven.

[0056] It should be noted that the number of protrusions 31 is not limited to this, and can be adjusted according to the working conditions and use requirements. Optionally, the protrusions 31 are two, or three, or five, or eight, or twelve, or thirteen, or more.

[0057] Specifically, the thickness T of the protrusion 31 is in the range of 0.3mm≤T≤0.5mm, the height H of the protrusion 31 is in the range of 0.5mm≤H≤0.7mm, and the distance L2 between the two adjacent protrusions 31 is in the range of 0.5mm≤L1≤0.7mm. In this way, the above setting makes the setting of the protrusion 31 more reasonable, which is beneficial to the protrusion 31 to further absorb the impact energy, and ensures the safety of the second to-be-protected member 2.

[0058] As shown in Figure 1 and Figure 2 , the mounting device further comprises a second buffer structure 40, which is arranged at the bottom of the frame body 10, so that the bottom of the frame body 10 is in contact with the support base surface 3 through the second buffer structure 40. In this way, when the bottom of the mounting device directly collides with the support base surface 3, the above setting absorbs the collision energy between the support base surface 3 and the frame body 10, and buffers the impact force between the support base surface 3 and the frame body 10, thereby achieving protection of the frame body 10, and further achieving protection of the first to-be-protected member 1 and the second to-be-protected member 2.

[0059] In the embodiment, the second buffer structure 40 is centrally symmetrically arranged to improve the aesthetics of the mounting device.

[0060] As shown in Figure 3 , the second buffer structure 40 comprises a first buffer member 41 and a second buffer member 42. The first buffer member 41 is provided with a plurality of through holes 411, and the plurality of through holes 411 are divided into a plurality of groups, each group of through holes 411 comprises a plurality of through holes 411, the plurality of groups of through holes 411 are distributed along the length direction of the bottom of the frame body 10, and the plurality of through holes 411 in each group of through holes 411 are distributed along the width direction of the bottom of the frame body 10. The second buffer member 42 is arranged around the first buffer member 41. Among them, the relationship between the height H1 of the first buffer member 41 and the height H2 of the second buffer member 42 satisfies: H1<H2. In this way, the setting mode of the through hole 411 realizes the resistance of the first buffer member 41 to the collision energy between the support base surface 3 and the frame body 10, and improves the buffering performance of the first buffer member 41. At the same time, the setting mode of the second buffer member 42 absorbs the collision energy between the support base surface 3 and the frame body 10, reduces the impact force between the support base surface 3 and the frame body 10, which is beneficial to the buffering of the first buffer member 41 to the impact force between the support base surface 3 and the frame body 10, and further improves the anti-collision performance of the mounting device.

[0061] In the embodiment, the through hole 411 is arranged in a regular hexagonal shape, and the plurality of through holes 411 are arranged in a honeycomb shape. In this way, the above setting improves the rigidity of the first buffer member 41, and further improves the resistance of the first buffer member 41 to the collision energy.

[0062] Specifically, the distance L3 between the plurality of through holes 411 ranges from 1.0 mm to 1.5 mm.

[0063] As shown in Figure 3 , the second buffer 42 comprises a first buffer segment 421 and a second buffer segment 422. The first buffer segment 421 is arranged around the first buffer 41, and the second buffer segment 422 has a preset distance from the first buffer 41. In this way, the above arrangement achieves, on the one hand, the buffering of the impact force between the support base surface 3 and the rack 10 by the second buffer 42, thereby improving the buffering performance of the second buffer 42. On the other hand, it avoids stress concentration caused by the collision between the bottom of the rack 10 and the support base surface 3, thereby preventing damage to the rack 10 and prolonging the service life of the rack 10, and further improving the safety of the mounting device.

[0064] In this embodiment, the bottom of the rack 10 is arranged in a plate shape, and the second buffer segment 422 is arranged at the edge of the bottom of the rack 10 to buffer the edge of the rack 10, thereby further improving the safety of the rack 10.

[0065] Specifically, the second buffer segment 422 is arranged in an L shape, and a chamfer is arranged at the edge of the second buffer segment 422. The radius R of the chamfer is 2 mm.

[0066] As shown in Figure 3 , the bottom of the rack 10 is provided with a communication hole 50, and the communication hole 50 is in communication with the through hole 411. In this way, the above arrangement achieves heat dissipation at the bottom of the rack 10, thereby achieving heat dissipation of the first object to be protected 1, and further improving the operation stability of the first object to be protected 1.

[0067] As shown in Figures 1 to 4 , the mounting device further comprises a second buffer cavity 60. The second buffer cavity 60 is arranged on the rack 10, and the second buffer cavity 60 is a plurality of second buffer cavities 60 arranged at intervals along the length or width direction of the rack 10. In this way, the above arrangement, on the one hand, reduces the weight of the rack 10, improves the space utilization of the mounting device and the energy density of the battery, reduces the production cost, and improves the economy of the mounting device; on the other hand, it improves the impact resistance of the rack 10, further improves the buffering performance of the rack 10, and improves the safety of the mounting device.

[0068] Optionally, the shape of the second buffer cavity 60 is one of a rectangle, a circle, a quadrilateral, and a polygon.

[0069] In this embodiment, the shape of the second buffer cavity 60 is rectangular.

[0070] As shown in Figure 1 and Figure 4As shown, the first to be protected piece 1 includes a plurality of battery cells 101, the first mounting cavity 11 includes a plurality of mounting portions 111, the plurality of mounting portions 111 are arranged one by one with the plurality of battery cells 101, and the battery cell 101 is arranged in the corresponding mounting portion 111. In this way, the above arrangement realizes the mounting of the first to be protected piece 1 through the mounting portion 111, and improves the mounting stability of the first to be protected piece 1.

[0071] In the embodiment, the battery cell 101 is arranged in a cylindrical shape, and the battery cell 101 is bonded with the mounting portion 111 through glue.

[0072] The application also provides a battery module, which comprises the mounting device and the battery element, and the battery element comprises the busbar 4 and the wire harness 5, and the busbar 4 and the wire harness 5 are mounted on the mounting device.

[0073] In the embodiment, the frame body 10 is provided with a mounting opening 13 at the bottom, the mounting opening 13 is communicated with the second mounting cavity 12, and the wire harness 5 is connected with the busbar 4 through the mounting opening 13.

[0074] In the embodiment, the busbar 4 is connected with the battery module and the PCB board through welding.

[0075] From the above description, it can be seen that the above-mentioned embodiments of the utility model realize the following technical effects:

[0076] The mounting device is used for mounting a first to-be-protected member and a second to-be-protected member, and a frame body of the mounting device has a first mounting cavity and a second mounting cavity, the first to-be-protected member is arranged in the first mounting cavity, and the second to-be-protected member is arranged in the second mounting cavity. At least one of the bottom end and the top end of the frame body is provided with two oppositely arranged support legs, the upper surfaces of the two support legs are arranged opposite to the end of the second to-be-protected member arranged in the second mounting cavity, a plurality of first buffer cavities are arranged on the support legs, and at least part of the frame body is made of an elastic material. In this way, when the mounting device falls to a supporting base, if the end of the mounting device collides with the base, the arrangement of the frame body can buffer the impact force between the supporting base and the mounting device, thereby protecting the first to-be-protected member and the second to-be-protected member. Meanwhile, if the mounting device collides with the base at a certain angle, the arrangement of the first buffer cavities can absorb the collision energy between the supporting base and the mounting device, thereby further buffering the impact force between the supporting base and the mounting device, avoiding damage to the second to-be-protected member, further protecting the second to-be-protected member, prolonging the service life of the second to-be-protected member, and improving the safety of the second to-be-protected member, thereby improving the anti-collision performance of the mounting device, and further solving the problem that the anti-collision performance of the battery module is not comprehensive in the prior art. Meanwhile, the above arrangement can reduce the weight of the mounting device, improve the space utilization of the mounting device, thereby improving the energy density of the battery, and on the other hand, can reduce the production cost, improve the work efficiency of the workers, and further improve the economy of the mounting device.

[0077] Obviously, the above-described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the present application.

[0078] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should be understood that, when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, work, device, component and / or combination thereof.

[0079] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0080] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A mounting device for mounting a first piece (1) to be protected and a second piece (2) to be protected, characterized in that The mounting device comprises: a frame body (10) having a first mounting cavity (11) and a second mounting cavity (12), the first to-be-protected member (1) being arranged in the first mounting cavity (11), and the second to-be-protected member (2) being arranged in the second mounting cavity (12); wherein at least one of the bottom end and the top end of the frame body (10) is provided with two oppositely arranged support legs (20), the upper surfaces of the two support legs (20) are oppositely arranged relative to the end of the second to-be-protected member (2) located in the second mounting cavity (12), a plurality of first buffer cavities (21) are arranged on the support legs (20), and at least part of the frame body (10) is made of an elastic material.

2. The mounting device of claim 1, wherein The mounting device further comprises a first buffer structure (30), the first buffer structure (30) is arranged on the upper surface of the support leg (20), wherein the first buffer structure (30) has an initial position, when the first buffer structure (30) is in the initial position, there is a preset gap between the first buffer structure (30) and the second to-be-protected member (2), and when the support leg (20) collides with the supporting base surface (3), the support leg (20) is deformed under the action of the first buffer cavity (21) to make the first buffer structure (30) contact the second to-be-protected member (2).

3. The mounting device of claim 2, wherein, The first buffer structure (30) is plate-shaped, a plurality of protrusions (31) are arranged on the side of the first buffer structure (30) away from the support leg (20), and the plurality of protrusions (31) are arranged at intervals along the length direction or the width direction of the first buffer structure (30).

4. The mounting device of claim 1, wherein The mounting device further comprises a second buffer structure (40), the second buffer structure (40) is arranged at the bottom of the frame body (10) to make the bottom of the frame body (10) contact the supporting base surface (3) through the second buffer structure (40).

5. The mounting device of claim 4, wherein, The second buffer structure (40) comprises: a first buffer member (41) having a plurality of through holes (411) arranged thereon, the plurality of through holes (411) are divided into a plurality of groups, each group of through holes (411) comprises a plurality of through holes (411), the plurality of groups of through holes (411) are arranged at intervals along the length direction of the bottom of the frame body (10), and the plurality of through holes (411) in each group of through holes (411) are arranged at intervals along the width direction of the bottom of the frame body (10); a second buffer member (42) arranged around the first buffer member (41); wherein the relationship between the height H1 of the first buffer member (41) and the height H2 of the second buffer member (42) satisfies: H1 < H2.

6. The mounting device of claim 5, wherein, The second buffer member (42) comprises a first buffer section (421) and a second buffer section (422), the first buffer section (421) is arranged around the first buffer member (41), and the second buffer section (422) has a preset distance from the first buffer member (41).

7. The mounting device of claim 5, wherein The bottom of the frame body (10) is provided with a communication hole (50) which is in communication with the through hole (411).

8. The mounting device of claim 1, wherein, The mounting device further comprises second buffer cavities (60) which are arranged on the frame body (10), and the second buffer cavities (60) are multiple and are arranged along the length direction or the width direction of the frame body (10).

9. The mounting device of claim 1, wherein, The first protection member (1) comprises a plurality of battery cells (101), and the first mounting cavity (11) comprises a plurality of mounting portions (111), the plurality of mounting portions (111) are arranged one by one in correspondence with the plurality of battery cells (101), and the battery cells (101) are arranged in the corresponding mounting portions (111).

10. A battery module, characterized by The mounting device and the battery element according to any one of claims 1 to 9, wherein the battery element comprises a busbar (4) and a wire harness (5), and the busbar (4) and the wire harness (5) are mounted on the mounting device.

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