CN216213794U

CN216213794U - Safe lithium ion battery frame and battery module

Info

Publication number: CN216213794U
Application number: CN202122384398.1U
Authority: CN
Inventors: 臧世伟
Original assignee: Chongqing Jinmei New Material Technology Co Ltd
Current assignee: Chongqing Jinmei New Material Technology Co Ltd
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2022-04-05
Anticipated expiration: 2031-09-29

Abstract

The embodiment of the utility model provides a safe lithium ion battery frame and a battery module, which comprise a frame structure used for accommodating a plurality of battery monomers, an elastic fixing structure arranged between every two battery monomers and used for fixing the battery monomers in the frame structure, and the battery module comprises a frame structure and a plurality of battery monomers arranged in the frame structure. The utility model can provide enough expansion space for the lithium ion battery, prevent the lithium ion battery from falling and being damaged, and simultaneously greatly improve the heat dissipation effect of the single pole of the battery.

Description

Safe lithium ion battery frame and battery module

Technical Field

The utility model belongs to the field of power batteries, and particularly relates to a safe lithium ion battery frame and a battery module.

Background

Lithium ion batteries are relatively clean and clean compared to traditional fossil energy sources, and therefore lithium ion batteries have also met with unprecedented opportunities for development.

In the process of implementing the utility model, the utility model people find that at least the following problems exist in the prior art:

at present, explosion and fire can occur in the production and use processes of the lithium ion battery, the main reason is that in the production or use process, lithium ions fall off or the lithium ion battery expands due to gas generation, and the existing lithium ion battery design does not provide space for expansion of the lithium ion battery, so that the lithium ion battery is easier to explode.

SUMMERY OF THE UTILITY MODEL

In view of the above, an object of the embodiments of the present invention is to provide a battery that can expand enough to prevent explosion of the battery and prevent the battery from falling and being damaged.

In a first aspect, an embodiment of the present invention provides a safety lithium ion battery frame, where the battery frame includes:

the battery pack comprises a frame structure, a battery pack and a battery pack, wherein the frame structure is used for accommodating a plurality of battery units; and the number of the first and second groups,

and the elastic fixing structures are respectively arranged between two adjacent battery monomers.

Furthermore, the frame structure is formed by enclosing a first baffle, a second baffle, a third baffle and a fourth baffle;

the first baffle and the second baffle are oppositely arranged;

one ends of the first baffle and the second baffle, which are far away from the fourth baffle, are respectively hinged with a first closing plate and a second closing plate, and the first closing plate and the second closing plate are closed to form the third baffle;

the fourth baffle and the third baffle are oppositely arranged;

furthermore, the first baffle with on the second baffle respectively array be connected with a plurality of elasticity fixed knot construct, a plurality of elasticity fixed knot construct on the first baffle with a plurality of elasticity fixed knot construct of fixed connection keep unanimous in horizontal direction and vertical direction on the second baffle, and the distance between two adjacent elasticity fixed knot construct in the vertical direction is the free width of battery for fix a plurality of battery monomer.

Furthermore, the elastic fixing structure is a cross structure, the cross structure comprises a transverse connecting part and a longitudinal fixing part, the transverse connecting part is used for being connected with the first baffle or the second baffle, and the fixing part is used for fixing the single battery.

Further, the fixing member 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.

Further, the material of the outer layer structure includes: rubber, sponge or foam; the inner core structure is made of plastic.

Furthermore, support pieces are respectively arranged on the first baffle and the second baffle and used for supporting the battery monomer.

Furthermore, a certain distance is reserved between the first baffle and the second baffle, and the bottom of the frame structure is in a semi-closed structure by setting the certain distance.

Furthermore, a plurality of through holes are respectively formed in the first baffle and the second baffle and used for heat circulation inside the frame structure.

In a second aspect, an embodiment of the present invention provides a battery module, where the battery module includes a battery frame as described above, and a plurality of battery cells disposed in the battery frame;

the plurality of battery cells are arranged along a length direction of the battery frame.

The technical scheme has the following beneficial effects:

according to the frame structure provided by the utility model, the elastic fixing structure is arranged in the frame structure, so that not only can a single battery be fixed, but also the expansion space of the single battery can be provided, and the lithium ion battery is prevented from falling, damaging or exploding; in addition, the frame structure adopts a semi-closed structure, and through holes are formed in the first baffle and the second baffle, so that a great heat dissipation effect can be achieved on the single battery.

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 overall structure diagram of a frame structure according to an embodiment of the present invention;

fig. 2 is a partially enlarged schematic view of a frame structure according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a closure panel provided by an embodiment of the present invention;

FIG. 4 is a schematic view of an elastic fixing structure according to an embodiment of the present invention;

FIG. 5 is a structural view of a longitudinal fixing member of an elastic structure according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a first baffle and a second baffle according to an embodiment of the present invention;

fig. 7 is a schematic diagram of a battery module according to an embodiment of the utility model.

The reference numbers illustrate:

1. frame structure, 2, battery monomer, 3, elasticity fixed knot construct, 11, first baffle, 12, second baffle, 13, third baffle, 14, fourth baffle, 131, first closure plate, 132, second closure plate, 31, horizontal connecting component, 32, vertical fixed part, 321, interior core structure, 322, outer layer structure, 111, first support piece, 121, second support piece.

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.

As shown in fig. 1, the battery frame includes a frame structure 1, where the frame structure 1 is used to hold a plurality of battery cells 2, an elastic fixing structure 3 is arranged between every two battery cells 2, and the battery cells 2 are fixed in the frame structure 1 through the elastic fixing structure 3; the frame structure 1 comprises a first baffle plate 11, a second baffle plate 12, a third baffle plate 13 and a fourth baffle plate 14, wherein one ends of the first baffle plate 11 and the second baffle plate 12, which are far away from the fourth baffle plate 14, are respectively hinged with a first closing plate 131 and a second closing plate 132, when the first closing plate 131 and the second closing plate 132 are both closed, the third baffle plate 13 is formed, and the fourth baffle plate 14 and the third baffle plate 13 are oppositely arranged; the battery frame 1 is enclosed by a first baffle 11, a second baffle 12, a third baffle 13 and a fourth baffle 14. The frame structure 3 of the embodiment of the utility model is not only convenient for installing the single battery, but also can provide enough expansion space for the single battery through the elastic fixing structure 3, thereby preventing the single battery from exploding.

As shown in fig. 2 and 3, in some embodiments, the first barrier 11 and the second barrier 12 are respectively connected to a plurality of elastic fixing structures 3, the plurality of elastic fixing structures connected to the first barrier 11 and the second barrier 12 are distributed in an array, and the plurality of elastic fixing structures 3 fixedly connected to the first barrier 11 and the plurality of elastic fixing structures 3 fixedly connected to the second barrier 14 are consistent in a horizontal direction and/or a vertical direction, that is, an installation position of each elastic fixing structure 3 installed on the first barrier 11 is symmetrical to an installation position of each elastic fixing structure 3 installed on the second barrier 14, and a distance between two adjacent elastic fixing structures in the vertical direction of the first barrier 11 or the second barrier 12 is a width of a battery cell and is used for fixing the plurality of battery cells. The elastic fixing structure is arranged to provide enough expansion space for the battery monomer, so that the battery monomer is prevented from exploding.

As shown in fig. 3, 4 and 5, in the present embodiment, the elastic fixing structure 3 is a cross structure including a transverse connecting member 31 and a longitudinal fixing member 32, the transverse connecting member 31 is used for connecting with the first barrier 12 or the second barrier 13, and the fixing member 31 is used for fixing the battery cell 2. The fastening means 32 comprises an inner core structure 321 and an outer layer structure 322, wherein the softness of the outer layer structure 322 is greater than the softness of the inner core structure 321. As an illustration, the outer structure 322 may be rubber, sponge or foam, and the inner structure 321 may be plastic. Through the arrangement of the outer layer structure, a certain residual compression space is reserved while the elastic fixing structure applies a fixed force to the battery monomer 2.

As shown in fig. 6, in some embodiments, the bottom portions of the first barrier 11 and the second barrier 12 are respectively provided with a first supporting member 111 and a second supporting member 121, and the plurality of battery cells 2 are supported by the first supporting member 111 and the second supporting member 121, so as to improve the stability of the plurality of battery cells 2 in the frame structure 1.

As shown in fig. 6, in some embodiments, the first baffle 11 and the second baffle 12 are respectively provided with a plurality of through holes 111 and a plurality of through holes 121 for heat circulation inside the frame structure 1, so as to improve heat dissipation performance and prevent explosion.

Example two

The embodiment of the utility model provides a battery module, which comprises any one of the frame structures 1 and a plurality of battery monomers 2 arranged in the frame structure 1, wherein the plurality of battery monomers 2 are arranged along the length direction of the frame structure.

As shown in fig. 7, the battery frame includes a first baffle 11, a second baffle 12, a third baffle 13 and a fourth baffle 14, wherein one ends of the first baffle 11 and the second baffle 12, which are far away from the fourth baffle 14, are respectively hinged with a first closing plate 131 and a second closing plate 132, when the first closing plate 131 and the second closing plate 132 are both closed, the third baffle 13 is formed, and the fourth baffle 14 is arranged opposite to the third baffle 13; the battery frame 1 is formed by enclosing a first baffle 11, a second baffle 12, a third baffle 13 and a fourth baffle 14, the battery frame 1 is used for containing a plurality of battery monomers 2, an elastic fixing structure is arranged between every two battery monomers 2, and the battery monomers 2 are fixed in the frame structure 1 through the elastic fixing structure.

In some embodiments, the first barrier 11 and the second barrier 12 are respectively connected to a plurality of elastic fixing structures 3, the plurality of elastic fixing structures connected to the first barrier 11 and the second barrier 12 are distributed in an array manner, and the plurality of elastic fixing structures 3 fixedly connected to the first barrier 11 and the plurality of elastic fixing structures 3 fixedly connected to the second barrier 14 are consistent in a horizontal direction and/or a vertical direction, that is, each elastic fixing structure 3 mounted on the first barrier 11 is symmetrical to a mounting position of each elastic fixing structure 3 mounted on the second barrier 14, and a distance between two adjacent elastic fixing structures in the vertical direction of the first barrier 11 or the second barrier 12 is a width of a battery cell and is used for fixing the plurality of battery cells. The elastic fixing structure is arranged to provide enough expansion space for the battery monomer, so that the battery monomer is prevented from exploding.

In the present embodiment, the elastic fixing structure 3 is a cross structure including a lateral connecting member 31 and a longitudinal fixing member 32, the lateral connecting member 31 is used to connect with the first barrier 12 or the second barrier 13, and the fixing member 31 is used to fix the battery cell 1. The fastening means 32 comprises an inner core structure 321 and an outer layer structure 322, wherein the softness of the outer layer structure 322 is greater than the softness of the inner core structure 321. As an illustration, the outer structure 322 may be rubber, sponge or foam, and the inner structure 321 may be plastic.

In some embodiments, the bottom portions of the first barrier 11 and the second barrier 12 are respectively provided with a first supporting member 111 and a second supporting member 121, and the plurality of battery cells 2 are supported by the first supporting member 111 and the second supporting member 121, so that the stability of the plurality of battery cells 2 in the frame structure 1 is improved.

In some embodiments, the first baffle 11 and the second baffle 12 are respectively provided with a plurality of through holes for heat circulation inside the frame structure 1, so as to improve heat dissipation performance and prevent explosion.

According to the battery module provided by the utility model, the elastic fixing structure is arranged in the frame structure, so that a plurality of battery monomers are fixed, a large enough expansion space can be provided for the battery module, and the lithium ion battery is prevented from falling to be damaged or explode; in addition, the frame structure adopts a semi-closed structure, and through holes are formed in the first baffle and the second baffle, so that a great heat dissipation effect can be achieved on the single battery.

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

1. A safety lithium ion battery frame, comprising:

a frame structure (1) for accommodating a plurality of battery cells (2); and the number of the first and second groups,

and the elastic fixing structures (3) are respectively arranged between two adjacent battery single bodies (2).

2. The frame of the safety lithium ion battery according to claim 1, wherein the frame structure (1) is enclosed by a first baffle (11), a second baffle (12), a third baffle (13) and a fourth baffle (14);

the first baffle (11) and the second baffle (12) are arranged oppositely;

a first closing plate (131) and a second closing plate (132) are respectively hinged to one ends of the first baffle plate (11) and the second baffle plate (12) far away from the fourth baffle plate (14), and the first closing plate (131) and the second closing plate (132) form the third baffle plate (13) after being closed;

the fourth baffle (14) and the third baffle (13) are arranged oppositely.

3. The frame for a safety lithium ion battery according to claim 2, wherein the plurality of elastic fixing structures (3) are respectively connected to the first baffle (11) and the second baffle (12) in an array manner, the plurality of elastic fixing structures (3) on the first baffle (11) and the plurality of elastic fixing structures (3) fixedly connected to the second baffle (12) are consistent in a horizontal direction and a vertical direction, and a distance between two adjacent elastic fixing structures (3) in the vertical direction is a width of the battery cell (2) and is used for fixing the plurality of battery cells (2).

4. A safety lithium ion battery frame according to claim 3, characterized in that the elastic fixing structure (3) is a cross structure, the cross structure comprises a transverse connecting part (31) and a longitudinal fixing part (32), the transverse connecting part (31) is used for connecting with the first baffle (11) or the second baffle (12), and the fixing part (32) is used for fixing the battery cell (2).

5. A safety lithium ion battery frame according to claim 4, characterized in that the fixing part (32) comprises: an inner core structure (321) and an outer layer structure (322), the softness of the outer layer structure (322) being greater than the softness of the inner core structure (321).

6. The battery frame according to claim 5, wherein the outer layer structure (322) comprises: rubber, sponge or foam; the material of the inner core structure (321) is plastic.

7. The frame of claim 2, wherein the first baffle (11) and the second baffle (12) are respectively provided with a first supporting member (111) and a second supporting member (112) for supporting the battery cells (2).

8. The frame for a safety lithium ion battery according to claim 7, wherein a certain distance is provided between the first baffle (11) and the second baffle (12), and the bottom of the frame structure (1) is a semi-closed structure by setting the certain distance.

9. The frame for a safety lithium ion battery according to claim 7 or 8, wherein the first baffle (11) and the second baffle (12) are respectively provided with a plurality of through holes for heat circulation inside the frame structure (1).

10. A battery module, characterized in that it comprises a frame structure (1) according to any one of claims 1 to 9 and a plurality of battery cells (2) arranged inside the frame structure (1);

the plurality of battery cells (2) are arranged along the length direction of the frame structure (1).