CN218677449U - Battery cell module with limiting structure - Google Patents

Abstract

The utility model provides an electric core module with a limit structure, a first electric core assembly, which comprises a first electric core and a first electric core shell, wherein the first electric core is wrapped by the first electric core shell, the first surface of the first electric core shell is provided with at least one first limit structure, and the second surface of the first electric core shell, which is opposite to the first surface, is provided with at least one second limit structure; and the second battery core assembly comprises a second battery core and a second battery core shell, the second battery core is wrapped by the second battery core shell, the first surface of the second battery core shell is provided with at least one first limiting structure, and the second surface, opposite to the first surface, of the second battery core shell is provided with at least one second limiting structure. After the battery cell module is assembled, the second limiting structure on the first battery cell shell is matched and connected with the first limiting structure on the second battery cell shell, so that the positioning and the limiting between the first battery cell shell and the second battery cell shell are realized, the battery cell connecting sheet is protected from being dragged, and the power supply of the battery cell can be continuously and effectively output.

Description

Battery cell module with limiting structure

Technical Field

The utility model relates to an electricity core module especially relates to an electricity core module with limit structure.

Background

With the vigorous popularization and support of the country on the new energy field, the development of the electric automobile is more and more rapid. The battery pack is used as a core part of the electric automobile, the light weight and the simplification of the power battery pack are particularly important, and the battery pack has positive effects on the endurance mileage, the safety, the reliability and the like of the electric automobile.

The lithium ion battery pack is a major energy form of the electric automobile, and is a hot spot of the controversial investment of numerous production and research and development units, and the performance of the lithium ion battery pack directly affects the overall performance of the electric automobile. Structurally, the lithium ion battery pack is formed by arranging a plurality of modules side by side, each module is formed by arranging a plurality of modules side by side, and each module is formed by arranging a plurality of battery cores arranged in an array side by side. In addition, because the electric core in the existing battery pack structure often has no cooling structure, when each electric core can generate more heat when the battery pack discharges at a large multiplying power under certain special working states, the heat can not be dissipated in time, so that the battery pack not only has great influence on the performance of the battery, but also has great potential safety hazards such as battery explosion and the like, and is poor in safety and reliability.

SUMMERY OF THE UTILITY MODEL

In view of the above prior art's shortcoming, the utility model aims to provide an electricity core module with limit structure for through the fixed mode of rubber coating between the electric core casing among the solution prior art, at electric core charge-discharge respiration in-process, there is the ageing inefficacy risk that comes unstuck, and electric core casing structural strength is relatively poor, warp easily and be difficult for radiating problem.

In order to realize above-mentioned purpose and other relevant purpose, the utility model provides an electricity core module with limit structure, include:

the battery comprises a first battery core assembly and a second battery core assembly, wherein the first battery core assembly comprises a first battery core and a first battery core shell, at least one first limiting structure is arranged on a first surface of the first battery core shell, which wraps the first battery core, and at least one second limiting structure is arranged on a second surface, opposite to the first surface, of the first battery core shell;

the second battery core assembly comprises a second battery cell and a second battery cell shell, wherein at least one first limiting structure is arranged on a first surface, wrapping the second battery cell, of the second battery cell shell, and at least one second limiting structure is arranged on a second surface, opposite to the first surface, of the second battery cell shell;

when the cell module is assembled, the second surface of the first cell shell and the first surface of the second cell shell are arranged close to each other, and the second limiting structure on the first cell shell and the first limiting structure on the second cell shell are matched with each other, so that the first cell shell and the second cell shell are positioned and limited.

In an embodiment of the present invention, the first limiting structure is a double-convex structure, and includes an upper convex body and a lower convex body arranged at an interval, and the upper convex body and the lower convex body are parallel to each other.

In an embodiment of the present invention, the second limit structure is a single convex body structure, the second cell casing distance between the double convex body structures and the first cell casing width of the single convex body structure match, so that the second limit structure the single convex body structure is embedded in the first limit structure between the upper convex body and the lower convex body.

In an embodiment of the present invention, the convex structures of the first and second limiting structures are rectangular structures or other shapes.

In an embodiment of the present invention, the first limiting structure is a U-shaped column structure or a semi-cylindrical structure.

In an embodiment of the present invention, the second limit structure is a single convex structure, the first limit structure is the U-shaped structure or the width of the opening of the semi-cylindrical structure and the second limit structure are matched with the maximum width of the single convex structure, so that the single convex structure is embedded in the U-shaped cylindrical structure or the semi-cylindrical structure.

In an embodiment of the present invention, the first limiting structure of the second cell casing and the second limiting structure of the first cell casing are mutually positioned by a clamping manner, so that a heat dissipation gap exists between the second surface of the first cell casing and the first surface of the second cell casing.

In an embodiment of the present invention, the first cell casing and the second cell casing are formed by bending metal sheets to form openings at both ends thereof, and the openings are provided with top covers and welded and sealed with the top covers.

In an embodiment of the present invention, the first limiting structure and the second limiting structure are formed by the cell casing being formed by an integral direct punch forming of a die.

In an embodiment of the present invention, the first cell assembly and the second cell assembly have the same structure, and a plurality of the first cell assembly or the second cell assembly are mounted in the cell module housing side by side.

As above, the utility model discloses an electricity core module with limit structure has following beneficial effect:

the convex body structure is added on the surface of the electric core shell, so that the structural strength of the shell can be effectively enhanced, and the shell is not easy to deform; and the mode that the second limit structure is matched with the first limit structure is adopted, so that the convex body is positioned and limited, and the assembly is easier. After the battery core is assembled, the first limiting structure limits the back-and-forth movement of the second limiting structure, so that the limiting effect is achieved, the battery core connecting sheet is protected from being pulled, and the power supply of the battery core can be continuously and effectively output. After a plurality of battery cores are assembled, the up-down movement of other battery cores can be limited through the second limiting structure. When a plurality of electric cores form wholly, spacing messenger's electric core through the convex body can not remove alone, the reliability of connection between the guarantee electric core. Meanwhile, a convex body height gap exists between the cell shells, so that the heat dissipation problem in the cell charging and discharging process can be effectively guaranteed, and the problem of degumming and aging between the cell shells is reduced.

Drawings

Fig. 1 (a) shows a schematic side view of the assembled electrical core module with a position-limiting structure of the present invention, and (b) shows a front view of a second surface of the electrical core housing.

Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1 (a).

Fig. 3 is a schematic diagram of the first surface, the second surface and the side surface of the battery cell module with the limiting structure according to a preferred embodiment of the present invention.

Fig. 4 is a schematic side view of a battery cell module with a limiting structure according to another preferred embodiment of the present invention.

Fig. 5 is a schematic view of a battery cell module with a position-limiting structure according to another preferred embodiment of the present invention.

Fig. 6 is a schematic view of a second surface of a battery cell module with a limiting structure according to another preferred embodiment of the present invention.

Fig. 7 is an assembly diagram of a battery cell module with a position limiting structure according to another preferred embodiment of the present invention.

Fig. 8 is a schematic top view of an assembled battery cell module with a limiting structure according to a preferred embodiment of the present invention.

Description of the element reference numerals

A first cell casing 1, a first face 11 of the first cell casing, and a second face 12 of the first cell casing;

the second cell casing 2, the first face 21 of the second cell casing, and the second face 22 of the second cell casing;

a third cell casing 3, a first face 31 of the third cell casing, and a second face 32 of the third cell casing;

a first limit structure 4, a first limit structure 41 of a first cell casing, a first limit structure 42 of a second cell casing, an upper protrusion 421, a lower protrusion 422, a first limit structure 43 of a third cell casing, and a first limit structure 44 of a fourth cell casing;

a second limit structure 5, a second limit structure 51 of the first cell casing, a second limit structure 52 of the second cell casing, a second limit structure 53 of the third cell casing, and a second limit structure 54 of the fourth cell casing;

an insulating layer 6, a first insulating layer 61, a second insulating layer 62, and a third insulating layer 63;

a fourth cell casing 7, a fourth cell casing first face 71, and a fourth cell casing second face 72;

cell module casing 8.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. It is also to be understood that the terminology used in the examples of the present invention is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the present invention. Test methods in which specific conditions are not specified in the following examples are generally carried out under conventional conditions or under conditions recommended by the respective manufacturers.

Please refer to fig. 1 to 8. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope covered by the technical content disclosed in the present invention without affecting the function and the achievable purpose of the present invention. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.

The utility model provides an electricity core module with limit structure, wherein, first electricity core subassembly includes first electric core and first electric core casing 1, is equipped with at least one first limit structure 4 on the first face 11 of first electric core casing 1, is equipped with at least one second limit structure 5 on the second face 12 relative with first face 11 on first electric core casing 1. The second cell assembly includes a second cell and a second cell casing 2, at least one first limiting structure 4 is disposed on a first surface 21 of the second cell casing 2, and at least one second limiting structure 5 is disposed on a second surface 22 of the second cell casing 2 opposite to the first surface 21. When the battery cell module is assembled, the second surface 12 of the first battery cell casing 1 and the first surface 22 of the second battery cell casing 2 are arranged close to each other, and the second limiting structure 5 on the first battery cell casing 1 and the first limiting structure 4 on the second battery cell casing 2 are matched with each other, so that the positioning and the limiting are realized between the first battery cell casing 1 and the second battery cell casing 2.

Referring to fig. 1 and fig. 2, in an embodiment of the present invention, the battery cell module includes a first battery cell assembly, a second battery cell assembly, and a third battery cell assembly having the same structure, and the number of the battery cell assemblies may be determined according to actual situations. The first cell assembly comprises a first cell (not shown) and a first cell casing 1, the second cell assembly comprises a second cell (not shown) and a second cell casing 2, and the third cell assembly comprises a third cell (not shown) and a third cell casing 3. The battery core shell is formed by bending a metal sheet, and the openings at the two ends of the battery core shell are provided with top covers which are welded and sealed with the top covers; the battery cell casing wraps up the battery cell in the battery cell casing. First limit structure 4 and second limit structure 5 utilize integrative direct stamping forming of mould before bending by electric core shell, and electric core shell can be the aluminum alloy material, also can be other suitable materials. The first surface 11 of the first cell shell 1 of the first cell assembly is provided with at least one first limiting structure 4, and the second surface 12 opposite to the first surface 11 is also provided with at least one second limiting structure 5. The first surface 21 of the second cell casing 2 of the second cell assembly is provided with at least one first limiting structure 4, and the second surface 22 opposite to the first surface 21 is also provided with at least one second limiting structure 5. The number of the first limiting structures 4 and the second limiting structures 5 can be increased or decreased according to design requirements, but the structural forms of the first limiting structures and the second limiting structures correspond to each other one by one. When the battery cell module is assembled, and in the assembled stage, the second surface 12 of the first battery cell casing 1 and the first surface 21 of the second battery cell casing 1 are arranged close to each other, so that the second limiting structure 5 on the first battery cell casing 1 and the first limiting structure 4 on the second battery cell casing 2 are mutually matched, and the positioning and the limiting between the first battery cell casing 1 and the second battery cell casing 2 are realized. Meanwhile, the third cell casing 3 has the same structure as the first cell casing 1 and the second cell casing 2, so that the third cell casing 3 and the second cell casing 2 are connected in the same limiting mode.

With reference to fig. 2 and 3, in a preferred embodiment of the present invention, a first limiting structure 4 is disposed on the first surface of the battery cell casing, wherein the first limiting structure 4 is a double-convex structure, and includes an upper convex body and a lower convex body disposed at an interval, and the upper convex body and the lower convex body are parallel to each other or not parallel to each other. A second limiting structure is arranged on the second surface of the cell shell, the second limiting structure 5 is a single convex body structure, and the distance between the double convex body structures of the second cell shell 2 is matched with the width of the single convex body structure of the first cell shell 1, so that the single convex body structure of the second limiting structure 5 is embedded between the upper convex body and the lower convex body of the first limiting structure 4. The first limiting structure 42 of the second cell casing 2 includes an upper convex body 421 and a lower convex body 422, and the first limiting structures 51 of the first cell casing 1 may be mutually matched, so that a positioning relationship exists between the first cell casing 1 and the second cell casing 2. Similarly, the second limiting mechanism 52 on the second cell casing 2 may cooperate with the first limiting mechanism 43 on the third cell casing 3. In this embodiment, the convex structures of the first limiting structure 4 and the second limiting structure 5 may be rectangular solids, or may be other types of convex structures. And a first insulating layer 61, a second insulating layer 62 and a third insulating layer 63 are respectively arranged on the outer sides of the first cell shell 1, the second cell shell 2 and the third cell shell 3, so as to insulate the first cell assembly, the second cell assembly and the third cell assembly. The insulating layer 6 may be made of PET polyester sheet, or may be made of other suitable materials.

Referring to fig. 4 to fig. 7, in another preferred embodiment of the present invention, the first limiting structures 4 are symmetrically disposed on the first surface of the cell casing, and the first limiting structures 4 may be U-shaped column structures or semi-cylindrical structures. Second limit structure 5 is symmetrically arranged on the second surface of the battery cell shell, and the second limit structure 5 is of a single convex body structure, so that the opening width of the U-shaped or semi-cylindrical structure of the first limit structure 4 is matched with the maximum width of the single convex body structure of the second limit structure 5, and the single convex body structure is embedded in the U-shaped or semi-cylindrical structure. After the battery cell is assembled, the first limit structure 4 of the fourth battery cell casing 7 and the second limit structure 5 of the fourth battery cell casing 7 may be directly positioned by being clamped. After the positioning is completed, glue can be injected between the cell shells, so that the positioning structure is more stable. Meanwhile, the battery cell shells are connected in a convex body mode, so that space exists between the battery cell shells, and the problem of heat dissipation of battery cell charging and discharging is solved.

In conjunction with fig. 8, the utility model also provides an electricity core module with limit structure, wherein, first electricity core subassembly and second electricity core subassembly have identical structure to the first electricity core subassembly of a plurality of or second electricity core subassembly are installed in side by side in electricity core module casing 8. The structure of the battery cell casing may be the fourth cell casing 7, or may be the first cell casing 1, the second cell casing 2, or the third cell casing 3. Be equipped with first limit structure 4 and second limit structure 5 in the bilateral symmetry of electricity core module, can be used to the electric core subassembly of fixed both sides. Meanwhile, the effect of clamping and positioning can be realized through the matching of the first limiting component 4 and the second limiting component 5 between the cell shells. First limit structure 4 and second limit structure 5 can be the outstanding convex body structure of any shape, first limit structure 4's upper portion and lower part can be the convex body that is parallel to each other, also can be for the convex body structure of nonparallel. Only the second limit structure 5 needs to be embedded into the middle space between the upper part and the lower part of the first limit structure 4, and the positioning effect is achieved. And an insulating layer 6 is also arranged outside the first cell shell 1 and the second cell shell 2 for insulating the cell components.

To sum up, the utility model provides a be used for lithium cell module assembles the battery package with the battery module after, the first limit structure of second electricity core casing has restricted the back-and-forth movement of the second limit structure of first electricity core casing, plays limiting displacement through the joint mode for first electricity core casing the second face with second electricity core casing there is the heat dissipation clearance between the first face, and each module of being convenient for comes unstuck ageing inefficacy risk etc. in charging process. Meanwhile, the first cell shell and the second cell shell are formed by bending metal sheets, and top covers are arranged at openings at two ends of the first cell shell and welded and sealed with the first cell shell and the second cell shell. And first limit structure and second limit structure 5 utilize integrative stamping forming of mould by the electric core casing, can improve electric core casing structural strength. Adopt the utility model discloses a lithium battery module, in the assembling process, first electric core subassembly and second electric core subassembly have the identical structure to the first electric core subassembly of a plurality of or second electric core subassembly are installed in electric core module casing side by side, make its process comparatively simple, the assembly requirement is lower, can reduce the technology difficulty of making the battery package, thereby can promote the assembly efficiency of battery package. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. It will be apparent to those skilled in the art that modifications and variations can be made to the above-described embodiments without departing from the spirit and scope of the invention, and it is intended that all equivalent modifications and variations be covered by the appended claims without departing from the spirit and scope of the invention.

Claims (10)

1. The utility model provides a battery cell module with limit structure which characterized in that includes:

the battery comprises a first battery core assembly and a second battery core assembly, wherein the first battery core assembly comprises a first battery core and a first battery core shell (1), the first battery core is wrapped by the first battery core shell (1), at least one first limiting structure (4) is arranged on a first surface (11) of the first battery core shell (1), and at least one second limiting structure (5) is arranged on a second surface (12) opposite to the first surface (11) of the first battery core shell (1);

the second battery core assembly comprises a second battery core and a second battery core shell (2), the second battery core is wrapped by the second battery core shell (2), at least one first limiting structure (4) is arranged on a first surface (21) of the second battery core shell (2), and at least one second limiting structure (5) is arranged on a second surface (22) opposite to the first surface (21) of the second battery core shell (2);

when the battery cell module is assembled, the second surface (12) of the first battery cell shell (1) and the first surface (22) of the second battery cell shell (2) are arranged close to each other, and the second limiting structure (5) on the first battery cell shell (1) and the first limiting structure (4) on the second battery cell shell (2) are matched with each other, so that the first battery cell shell (1) and the second battery cell shell (2) are positioned and limited.

2. The battery cell module with the limiting structure of claim 1, wherein: first limit structure (4) are biconvex body structure, including last convex body and the lower convex body that the interval set up, go up the convex body with be parallel to each other between the convex body down.

3. The battery cell module with the limiting structure of claim 2, wherein: the second limiting structure (5) is of a single convex body structure, the distance between the double convex body structures of the second battery cell shell (2) is matched with the width of the single convex body structure of the first battery cell shell (1), so that the single convex body structure of the second limiting structure (5) is embedded between the upper convex body and the lower convex body of the first limiting structure (4).

4. The battery cell module with the limiting structure of claim 3, wherein: the convex body structures of the first limiting structure (4) and the second limiting structure (5) are cuboids.

5. The battery cell module with the limiting structure of claim 1, wherein: the first limiting structure (4) is of a U-shaped column structure or a semi-cylindrical structure.

6. The battery cell module with the limiting structure of claim 5, wherein: the second limiting structure (5) is a single convex body structure, and the width of the opening of the U-shaped column structure or the semi-cylindrical structure of the first limiting structure (4) is matched with the maximum width of the single convex body structure of the second limiting structure (5), so that the single convex body structure is embedded in the U-shaped column structure or the semi-cylindrical structure.

7. The battery cell module with the limiting structure according to claim 4 or 6, wherein: the first limiting structure (4) of the second cell casing (2) and the second limiting structure (5) of the first cell casing (1) are mutually positioned in a clamping manner, so that a heat dissipation gap exists between the second surface (12) of the first cell casing (1) and the first surface (21) of the second cell casing (2).

8. The battery cell module with the limiting structure of claim 1, wherein: the first battery cell shell (1) and the second battery cell shell (2) are formed by bending metal sheets, and top covers are arranged at openings of two ends of the first battery cell shell and are welded and sealed with the first battery cell shell.

9. The battery cell module with the limiting structure of claim 8, wherein: the first limiting structure (4) and the second limiting structure (5) are formed by the battery cell shell through integral direct stamping of a die.

10. The battery cell module with the limiting structure of claim 1, wherein: the first cell assembly and the second cell assembly have the same structure, and a plurality of the first cell assembly or the second cell assembly are arranged in the cell module shell (8) in parallel.

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