CN216213795U - Fall-proof safety lithium ion battery and battery module - Google Patents

Abstract

The utility model provides a fall-proof safety lithium ion battery and a battery module, wherein the fall-proof safety lithium ion battery comprises: battery case and electric core structure connect first arc buffer board and second arc buffer board respectively through battery case's upper and lower internal surface, and first arc buffer board and second arc buffer board form inside hollow space respectively with battery case's upper and lower internal surface, are provided with a plurality of elastomeric support columns respectively in the space, and a plurality of elastomeric support column's height is decremented to both sides in proper order along respective space middle part position respectively. The utility model can enable the surface of the arc buffer plate, which is close to the battery shell, to be in contact with the elastic support columns, so that the surfaces of the arc buffer plate and the arc buffer plate are planes, and the utility model can not only provide enough expansion space for the anti-drop safety lithium ion battery, but also prevent the battery from being damaged by dropping. In addition, the battery module provided by the embodiment of the utility model prevents the explosion of the battery monomer by arranging the elastic fixing structure.

Description

Fall-proof safety lithium ion battery and battery module

Technical Field

The utility model belongs to the technical field of new energy automobiles, and particularly relates to a falling-proof safety lithium ion battery and a battery module.

Background

Lithium ion battery is comparatively clean and clean for traditional fossil energy, and consequently, lithium ion battery has also met development opportunity unprecedented, but, at present lithium ion battery all can appear explosion and cause such as fire in production and use, and the leading cause lies in production or use in-process lithium ion battery, in case fall or the inside gas emergence of lithium ion battery expands, current lithium ion battery design does not give the expanded space of lithium ion battery to the emergence explosion.

Based on the above, the utility model designs a fall-proof safe lithium ion battery and a battery module, so as to solve the existing problems.

SUMMERY OF THE UTILITY MODEL

In view of the above, an object of the embodiments of the present invention is to provide a drop-proof safety lithium ion battery and a battery module, so as to solve the problems in the background art.

To achieve the above object, in a first aspect, an embodiment of the present invention provides a fall-prevention safety lithium ion battery, including:

a battery case;

the battery cell structure is arranged inside the battery shell;

the first arc-shaped buffer plate is connected with the upper inner surface of the battery shell and forms a first space with a hollow interior with the upper inner surface of the battery shell;

a second arc buffer plate connected to the lower inner surface of the battery case and forming a second space with the lower inner surface of the battery case, the second space being hollow inside;

a plurality of elastomeric support columns disposed within the first and second spaces, respectively.

In some possible embodiments, the first arc buffer plate includes an arc portion and first flat plates disposed at both sides of the arc portion, and is connected to the battery case through the first flat plates at both sides; the second arc buffer board comprises an arc part and second flat plates arranged on two sides of the arc part, and the second flat plates on two sides are connected with the battery shell.

In some possible embodiments, a plurality of elastomeric support columns disposed in the first space are fixedly connected to the inner surface of the upper portion of the housing, and a plurality of elastomeric support columns disposed in the second space are fixedly connected to the inner surface of the lower portion of the housing; the elastic support columns are arranged at intervals and are respectively abutted against the first arc-shaped buffer plate and the second arc-shaped buffer plate;

the heights of the elastic support columns are gradually reduced towards two sides along the middle positions of the first space and the second space respectively.

In some possible embodiments, the first flat plates on both sides of the first arc-shaped buffer plate are connected with the battery shell in a welding, screwing or clamping manner; the second flat board of second arc buffer board both sides with battery case passes through the form of welding, spiro union or joint and connects.

In some possible embodiments, the first arc-shaped buffer plate and the second arc-shaped buffer plate are both of a spring plate structure; the first arc-shaped part of the first arc-shaped buffer plate and the first flat plates arranged on two sides of the first arc-shaped part form an integrated structure; the second arc-shaped part of the second arc-shaped buffer plate and the second flat plate arranged on two sides of the second arc-shaped part form an integrated structure; the first arc-shaped part and the second arc-shaped part are respectively provided with a plurality of first holes and a plurality of second holes, and the first flat plate and the second flat plate are respectively provided with a plurality of third holes and a plurality of fourth holes.

In a second aspect, the present invention provides a battery module, including: the anti-falling safety lithium ion battery comprises a frame structure and a plurality of anti-falling safety lithium ion batteries arranged in the frame structure according to any one of the above, wherein a plurality of elastic fixing structures are arranged between two adjacent anti-falling safety lithium ion batteries.

In some possible embodiments, the frame structure comprises: the first baffle and the second baffle are hinged to two ends of the first baffle in the length direction respectively, a first closing plate and a second closing plate are hinged to two ends of the second baffle in the length direction respectively, and when the first closing plate, the second closing plate, the third closing plate and the fourth closing plate are closed, the first closing plate, the second closing plate, the third closing plate and the fourth closing plate are enclosed to form the frame structure;

the first closing plate, the second closing plate, the third closing plate and the fourth closing plate are respectively provided with a threaded hole, and when the first closing plate, the second closing plate, the third closing plate and the fourth closing plate are closed, the first closing plate, the second closing plate, the third closing plate and the fourth closing plate are respectively fixed on the first baffle or the second baffle through screws.

In some possible embodiments, the first baffle and the second baffle are respectively connected with the plurality of elastic fixing structures in an array manner, the plurality of elastic fixing structures on the first baffle and the plurality of elastic fixing structures fixedly connected to the second baffle are kept consistent in the horizontal direction and the vertical direction, and the distance between two adjacent elastic fixing structures in the vertical direction is the width of the fall-prevention safety lithium ion battery, so that the fall-prevention safety lithium ion battery is limited and buffered.

In some possible embodiments, the elastic fixing structure is a cross structure, the cross structure includes a transverse connecting part and a longitudinal fixing part, the transverse connecting part is used for connecting with the first baffle or the second baffle, and the longitudinal fixing part is used for fixing the fall-prevention safety lithium ion battery, wherein the longitudinal fixing part includes: the soft core comprises an inner core structure and an outer layer structure, wherein the softness of the outer layer structure is greater than that of the inner core structure.

In some possible embodiments, the first baffle plate and the second baffle plate are provided with a plurality of fifth holes and a plurality of sixth holes, respectively; or the like, or, alternatively,

the first baffle and the second baffle are respectively provided with a first supporting plate and a second supporting plate which are used for supporting a plurality of anti-falling safety lithium ion batteries; or the like, or, alternatively,

a certain distance is reserved between the first baffle and the second baffle, so that the bottom of the frame body structure is of a semi-closed structure.

The technical scheme has the following beneficial effects:

according to the anti-falling safety lithium ion battery and the battery module, the upper inner surface and the lower inner surface of the battery shell are respectively connected with the first arc-shaped buffer plate and the second arc-shaped buffer plate, the first arc-shaped buffer plate and the second arc-shaped buffer plate respectively form a first space and a second space which are hollow inside with the upper inner surface and the lower inner surface of the battery shell, the first space and the second space are respectively provided with the plurality of elastic supporting columns, and the heights of the plurality of elastic supporting columns are sequentially decreased progressively towards two sides along the middle positions of the first space and the second space. The height of the elastic support columns through the middle positions of the hollow first space and the hollow second space is greater than the height of the elastic support columns located at the edges of the hollow first space and the hollow second space, so that when the cell structure extrudes the first arc-shaped buffer plate and the second arc-shaped buffer plate, the first arc-shaped buffer plate and the second arc-shaped buffer plate compress the inner surface of the battery shell, the first arc-shaped buffer plate and the second arc-shaped buffer plate lean against one surface in the battery shell to be in mutual contact with the elastic support columns, the surface of the first arc-shaped buffer plate and the surface of the second arc-shaped buffer plate are planar, a sufficient expansion space of a falling-proof safety lithium ion battery can be given, and the battery can be prevented from falling and being damaged. In addition, the battery module provided by the embodiment of the utility model can provide enough expansion space for a plurality of anti-falling safety lithium ion batteries by arranging the elastic fixing structure, so that the single batteries are prevented from exploding.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view of the overall structure of a battery cell according to an embodiment of the present invention;

fig. 2 is an overall schematic diagram of a cell structure according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of an arc-shaped buffer plate according to an embodiment of the present invention;

FIG. 4 is a schematic view of a plurality of resilient members according to an embodiment of the present invention;

fig. 5A is a plan view illustrating the overall structure of a battery module according to an embodiment of the present invention;

fig. 5B is a perspective view illustrating the overall structure of a battery module according to an embodiment of the present invention;

fig. 6 is a partial enlarged view of an elastic fixing structure disposed between two battery cells in the battery module according to the embodiment of the utility model;

FIG. 7 is a schematic view of an elastic fixing structure according to an embodiment of the present invention;

FIG. 8 is a structural view of a longitudinal fixing structure of an embodiment of the present invention;

FIG. 9 is a schematic view of a first baffle and a second baffle of an embodiment of the utility model;

fig. 10 is a schematic view of a closure panel provided by an embodiment of the present invention.

The reference numbers illustrate:

10. a falling-proof safety lithium ion battery comprises a falling-proof safety lithium ion battery body 1, a battery shell body 2, a battery cell structure 11, a first arc-shaped buffer plate 12, a second arc-shaped buffer plate 13, a first space 14, a second space 15, an elastic supporting column 111, a first arc-shaped part 112, a first flat plate 113, a first hole 123, a second hole 114, a third hole 124, a fourth hole 121, a first arc-shaped part 122, a second flat plate 30, a battery module 3, frame structure, 31, first baffle, 32, second baffle, 311, first closed board, 312, second closed board, 321, third closed board, 322, fourth closed board, 313, fifth hole, 323, sixth hole, 314, first backup pad, 324, second backup pad, 4, elastic fixing structure, 41, transverse connecting component, 42, vertical fixing component, 421, inner core structure, 422, outer layer structure.

Detailed Description

Features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention. In the drawings and the following description, at least some well-known structures and techniques have not been shown in detail in order to avoid unnecessarily obscuring the present invention; also, the dimensions of some of the structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Referring to fig. 1 to 4, an embodiment of the utility model provides a fall-prevention safety lithium ion battery 10, where the fall-prevention safety lithium ion battery 10 includes: battery case 1 and electric core structure 2, first arc buffer board 11 and second arc buffer board 12 are connected respectively to battery case 1's upper and lower internal surface, first arc buffer board 11 and second arc buffer board 12 form inside hollow first space 13 and inside hollow second space 14 with battery case 1's upper and lower internal surface respectively, be provided with a plurality of elastomeric support columns 15 respectively in first space 13 and second space 14 promptly in first space 13, elastomeric support columns 15's height is the biggest at the central line position of first arc buffer board 11, highly reduce in proper order towards the both sides of first arc buffer board 11 along the central line position, with the radian phase-match of first arc buffer board 11, elastomeric support columns 15's in the second space 14 setting mode is the same with first space 13. The height of the elastic support columns 15 in the middle positions of the hollow first space 13 and the hollow second space 14 is larger than the elastic support columns 15 at the edges of the hollow first space 13 and the hollow second space 14, so that when the cell structure 2 extrudes the first arc-shaped buffer plate 11 and the second arc-shaped buffer plate 12, the first arc-shaped buffer plate 11 and the second arc-shaped buffer plate 12 compress the inner surface of the battery shell, the first arc-shaped buffer plate 11 and the second arc-shaped buffer plate 12 are in mutual contact with the elastic support columns 15 by leaning against one surface in the battery shell 1, the surfaces of the first arc-shaped buffer plate 11 and the second arc-shaped buffer plate 12 are planes, a space for enough expansion of the falling-proof safety lithium ion battery 10 can be given, and the falling damage of the lithium ion 10 battery can be prevented.

In some embodiments, the first arc buffer plate 11 includes a first arc portion 111 and first flat plates 112 disposed at both sides of the first arc portion, and is connected to the battery case 1 through the first flat plates 112 at both sides; the second arc-shaped buffer plate 12 comprises a second arc-shaped part 121 and second flat plates 122 arranged on two sides of the second arc-shaped part, the second arc-shaped part is connected with the battery shell 1 through the second flat plates 122 on two sides, the first arc-shaped buffer plate 11 and the second arc-shaped buffer plate 12 are respectively provided with a first flat plate 112 and a second flat plate 122, the first arc-shaped buffer plate 112 and the second arc-shaped buffer plate 122 on two sides are connected with the inner surface of the battery shell 1 through the first flat plate 112 on two sides and the second flat plates 122 on two sides, the connection area is increased, the first arc-shaped buffer plate 11 and the second arc-shaped buffer plate 12 are more firmly connected with the upper inner surface and the lower inner surface of the battery shell 1, in addition, when the first arc-shaped part 111 and the second arc-shaped part 121 are pressed by the battery core structure 2, the first arc-shaped part 111 and the second arc-shaped part 121 are compressed towards the inner surface of the battery shell 1, so that the first arc-shaped part 111 and the second arc-shaped part 121 are contacted with the elastic supporting columns 15, so that the surfaces of the first arc-shaped buffer plate 11 and the second arc-shaped buffer plate 12 are flat surfaces, and a sufficient expansion space can be provided for the falling-prevention safety lithium ion battery 10.

In some embodiments, the plurality of elastic support columns 15 are distributed in the first space 13 and the second space 14 in an array manner, heights of the plurality of elastic support columns 15 decrease gradually towards two sides along middle positions of the first space 13 and the second space 14, respectively, and the plurality of elastic support columns 15 are fixedly connected with upper and lower inner surfaces of the battery case 1, so that the plurality of elastic support columns 15 are prevented from moving when the first arc-shaped buffer plate 11 and the second arc-shaped buffer plate 12 are compressed towards the inner surface of the battery case 1.

In some embodiments, the first flat plates 112 at both sides of the first arc-shaped buffer plate 11 are connected with the battery case 1 by welding, screwing or clamping; the second flat plate 122 at the two sides of the second arc-shaped buffer plate 12 is connected with the battery shell 1 in a welding, screwing or clamping manner, so that the first arc-shaped buffer plate 11 and the second arc-shaped buffer plate 12 are extruded to move when the cell structure 2 is prevented from expanding.

In some embodiments, the first arc-shaped buffer plate 11 and the second arc-shaped buffer plate 12 are both of a spring plate structure, and/or the first arc-shaped portion 111 and the second arc-shaped portion 121 of the first arc-shaped buffer plate 11 and the second arc-shaped buffer plate 12 are respectively provided with a plurality of first holes 113 and a plurality of second holes 123, or the first flat plate 112 and the second flat plate 122 are respectively provided with a plurality of third holes 114 and a plurality of fourth holes 124, wherein the plurality of first holes 113, the plurality of second holes 123, the plurality of third holes 114, and the plurality of fourth holes 124 may be circular or elongated, or have other shapes, which are not specifically limited herein; the spring piece structure can increase the elasticity of first arc buffer board 11 and second arc buffer board 12, through setting up a plurality of first holes 113, a plurality of second holes 123, a plurality of third holes 114 and a plurality of fourth holes 124, can improve the inside heat flow of dropproof safety lithium ion battery 10, improves heat dispersion.

Example two

As shown in fig. 5A, 5B and 6 to 10, the present invention provides a battery module 30, the battery module 30 including: frame structure 3 and set up a plurality of dropproof safe lithium ion battery 10 in frame structure 3, a plurality of dropproof safe lithium ion battery 10 are installed in frame structure 3, and is preferred, can also be provided with a plurality of elastic fixation structures 4 between two adjacent dropproof safe lithium ion battery 10, through setting up elastic fixation structure 4, can give a plurality of dropproof safe lithium ion battery 10 sufficient expansion spaces, prevent that the battery module from exploding.

In some embodiments, the frame structure 3 includes: the first baffle 31 and the second baffle 32 are respectively hinged with a first closing plate 311 and a second closing plate 312 at two ends of the first baffle 31 in the length direction, respectively hinged with a third closing plate 321 and a fourth closing plate 322 at two ends of the second baffle 32 in the length direction, and when the first closing plate 311, the second closing plate 312, the third closing plate 321 and the fourth closing plate 322 are all closed, the first closing plate 311, the second closing plate 312, the third closing plate 321 and the fourth closing plate 322 are enclosed to form a frame structure 3; the first closing plate 311, the second closing plate 312, the third closing plate 321 and the fourth closing plate 322 are respectively provided with a threaded hole, when the first closing plate 311, the second closing plate 312, the third closing plate 321 and the fourth closing plate 322 are closed, the first closing plate 311, the second closing plate 312, the third closing plate 321 and the fourth closing plate 322 are respectively fixed on the first baffle 31 or the second baffle 32 through screws, so that the firmness of the frame structure 3 is improved; in addition, by providing a plurality of closing plates, not only the weight of the battery module 20 is reduced, but also the heat dissipation performance of the battery module 20 is improved.

In some embodiments, a plurality of elastic fixing structures 4 are respectively connected to the first barrier 31 and the second barrier 32 in an array manner, the plurality of elastic fixing structures 4 on the first barrier 31 and the plurality of elastic fixing structures 4 fixedly connected to the second barrier 32 are kept consistent in the horizontal direction and the vertical direction, and a distance between two adjacent elastic fixing structures 4 in the vertical direction is a width of the fall-prevention safety lithium ion battery 10, so as to limit and cushion the plurality of fall-prevention safety lithium ion batteries 10.

In some embodiments, as shown in fig. 7, the elastic fixing structure 4 is a cross structure, the cross structure includes a transverse connecting part 41 and a longitudinal fixing part 42, the transverse connecting part 41 is used for connecting with the first baffle 11 or the second baffle 12, and the fixing part 42 is used for fixing the fall-prevention safety lithium ion battery 10, wherein, as shown in fig. 8, the fixing part 42 includes: an inner core structure 421 and an outer layer structure 422, the outer layer structure 422 having a softness greater than the softness of the inner core structure 421. The elastic fixing structure 4 can provide a sufficient expansion space for the plurality of fall-prevention safety lithium ion batteries 10, and the battery module 30 is prevented from exploding.

In some embodiments, the first barrier 31 and the second barrier 32 are provided with a plurality of fifth holes 313 and a plurality of sixth holes 323, respectively; further, as shown in fig. 10, the first baffle 31 and the second baffle 32 are respectively provided with a first supporting plate 314 and a second supporting plate 324 for supporting the plurality of fall protection safety lithium ion batteries 10; the first support plate 314 and the second support plate 324 are spaced apart such that the bottom of the frame structure 3 is a semi-enclosed structure. Since the first baffle plate 31 and the second baffle plate 32 are respectively provided with the fifth holes 313 and the sixth holes 323, and the bottom of the frame structure 3 does not adopt a totally-enclosed structure, a great heat dissipation effect is also exerted on the battery module 30.

The utility model provides a fall-proof safety lithium ion battery and a battery module, wherein the upper inner surface and the lower inner surface of a battery shell 1 are respectively connected with a first arc-shaped buffer plate 11 and a second arc-shaped buffer plate 12, the first arc-shaped buffer plate 11 and the second arc-shaped buffer plate 12 respectively form a first space 13 and a second space 14 which are hollow inside with the upper inner surface and the lower inner surface of the battery shell 1, a plurality of elastic support columns 15 are respectively arranged in the first space 13 and the second space 14, the elastic support columns 15 are distributed in the first space 13 and the second space 14 in an array manner, and the heights of the elastic support columns 15 are sequentially reduced from the middle position to two sides of the first space 13 or the second space 14 respectively. The height of the elastic support columns 15 in the middle positions of the hollow first space 13 and the hollow second space 14 is larger than the elastic support columns 15 at the edges of the hollow first space 13 and the hollow second space 14, so that when the cell structure 2 extrudes the first arc-shaped buffer plate 11 and the second arc-shaped buffer plate 12, the first arc-shaped buffer plate 11 and the second arc-shaped buffer plate 12 compress the inner surface of the battery shell, the first arc-shaped buffer plate 11 and the second arc-shaped buffer plate 12 are in mutual contact with the elastic support columns 15 by leaning against one surface in the battery shell 1, the surfaces of the first arc-shaped buffer plate 11 and the second arc-shaped buffer plate 12 are planes, a sufficient expansion space for the falling-prevention safety lithium ion battery 10 can be given, and the falling-prevention safety lithium ion battery 10 can be prevented from being damaged. In addition, the battery module 30 according to the embodiment of the present invention can provide sufficient expansion space for the plurality of fall-prevention safety lithium ion batteries 10 by providing the elastic fixing structure 4, so as to prevent the battery module 30 from exploding.

In the description of the present invention, it should be noted that the terms "upper, lower, inner and outer" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms first, second, or third are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The terms "mounted, connected and connected" in the present invention are to be understood broadly, unless otherwise explicitly specified or limited, for example: can be fixedly connected, detachably connected or integrally connected; they may be mechanically, electrically, or directly connected, or indirectly connected through intervening media, or may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

While the utility model has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the utility model not be limited to the particular embodiments disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims (10)

1. A fall protection safety lithium ion battery (10), characterized in that the fall protection safety lithium ion battery (10) comprises:

a battery case (1);

the battery core structure (2) is arranged inside the battery shell (1);

a first arc-shaped buffer plate (11) which is connected with the upper inner surface of the battery shell (1) and forms a first space (13) with a hollow interior with the upper inner surface of the battery shell (1);

a second arc-shaped buffer plate (12) connected to the lower inner surface of the battery case (1) and forming a second space (14) having a hollow interior with the lower inner surface of the battery case (1);

a plurality of elastomeric support columns (15) respectively disposed inside the first space (13) and the second space (14).

2. The fall arrest safe lithium ion battery (10) according to claim 1, characterized in that:

the first arc-shaped buffer plate (11) comprises a first arc-shaped part (111) and first flat plates (112) arranged on two sides of the first arc-shaped part (111), and the first flat plates (112) on two sides are connected with the battery shell (1);

the second arc-shaped buffer plate (12) comprises a second arc-shaped part (121) and second flat plates (122) arranged on two sides of the second arc-shaped part (121), and the second flat plates (122) on two sides are connected with the battery shell (1).

3. The fall arrest safe lithium ion battery (10) according to claim 1, characterized in that: a plurality of elastic supporting columns (15) arranged in the first space (13) are fixedly connected with the inner surface of the upper part of the shell (1), and a plurality of elastic supporting columns (15) arranged in the second space (14) are fixedly connected with the inner surface of the lower part of the shell (1);

the elastic support columns (15) are arranged at intervals and are respectively abutted against the first arc-shaped buffer plate (11) and the second arc-shaped buffer plate (12);

the heights of the elastic support columns (15) are gradually reduced towards two sides along the middle positions of the first space (13) and the second space (14) respectively.

4. The fall arrest safe lithium ion battery (10) according to claim 1, characterized in that:

the first flat plates (112) on two sides of the first arc-shaped buffer plate (11) are connected with the battery shell (1) in a welding, screw connection or clamping manner;

the second flat plates (122) on two sides of the second arc-shaped buffer plate (12) are connected with the battery shell (1) in a welding, screw connection or clamping mode.

5. The fall arrest safe lithium ion battery (10) according to claim 2, characterized in that: the first arc-shaped buffer plate (11) and the second arc-shaped buffer plate (12) are both of a spring piece structure;

the first arc-shaped part (111) and a first flat plate (112) arranged at two sides of the first arc-shaped part (111) form an integrated structure; the second arc-shaped part (121) and second flat plates (122) arranged on two sides of the arc-shaped part (121) form an integrated structure;

the first arc-shaped part (111) and the second arc-shaped part (121) are respectively provided with a plurality of first holes (113) and a plurality of second holes (123), and the first flat plate (112) and the second flat plate (122) are respectively provided with a plurality of third holes (114) and a plurality of fourth holes (124).

6. A battery module (30), characterized in that the battery module (30) comprises: frame structure (3), and a plurality of fall arrest safety lithium ion batteries (10) according to any one of claims 1-5 arranged in the frame structure (3), a plurality of elastic fixation structures (4) being arranged between two adjacent fall arrest safety lithium ion batteries (10).

7. The battery module (30) according to claim 6, wherein the frame structure (3) comprises: the frame structure comprises a first baffle plate (31) and a second baffle plate (32), wherein a first closing plate (311) and a second closing plate (312) are respectively hinged to two ends of the first baffle plate (31) in the length direction, a third closing plate (321) and a fourth closing plate (322) are respectively hinged to two ends of the second baffle plate (32) in the length direction, and when the first closing plate (311), the second closing plate (312), the third closing plate (321) and the fourth closing plate (322) are closed, the frame structure (3) is enclosed;

the first closing plate (311), the second closing plate (312), the third closing plate (321) and the fourth closing plate (322) are respectively provided with a threaded hole, and when the first closing plate (311), the second closing plate (312), the third closing plate (321) and the fourth closing plate (322) are closed, the first closing plate (311), the second closing plate (312), the third closing plate (321) and the fourth closing plate (322) are fixed on the first baffle plate (31) or the second baffle plate (32) respectively through screws.

8. The battery module (30) according to claim 7, wherein: first baffle (31) with on second baffle (32) respectively the array be connected with a plurality of elasticity fixed knot construct (4), a plurality of elasticity fixed knot construct (4) on first baffle (31) with on second baffle (32) a plurality of elasticity fixed knot construct (4) of fixed connection keep unanimous in the horizontal direction and/or vertical direction, and the distance between two adjacent elasticity fixed knot construct (4) in the vertical direction does the width of dropproof safety lithium ion battery (10) is used for a plurality of dropproof safety lithium ion battery (10) carry on spacingly and the buffering.

9. The battery module (30) according to claim 8, wherein: the elastic fixing structure (4) is a cross structure, the cross structure comprises a transverse connecting part (41) and a longitudinal fixing part (42), the transverse connecting part (41) is used for being connected with the first baffle (31) or the second baffle (32), the longitudinal fixing part (42) is used for fixing the fall-prevention safety lithium ion battery (10), wherein the longitudinal fixing part (42) comprises: an inner core structure (421) and an outer layer structure (422), the outer layer structure (422) having a softness greater than the softness of the inner core structure (421).

10. The battery module (30) according to claim 9, wherein: the first baffle plate (31) and the second baffle plate (32) are respectively provided with a plurality of fifth holes (313) and a plurality of sixth holes (323); alternatively, the first and second electrodes may be,

the first baffle (31) and the second baffle (32) are respectively provided with a first supporting plate (314) and a second supporting plate (324) for supporting a plurality of the fall-prevention safety lithium ion batteries (10); alternatively, the first and second electrodes may be,

the first baffle (31) and the second baffle (32) are spaced apart from each other to form a semi-enclosed structure at the bottom of the frame structure (3).

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