A battery group structure with multiple fixed cells

Abstract

The present invention discloses a battery group structure for fixing battery cells in multiple sections, including battery cells arranged inside a bracket and end caps arranged at both ends of the bracket; a nickel sheet is connected to the end cap; an insulating plate is arranged outside the nickel sheet; the bracket comprises at least one bracket body; a battery cell accommodating cavity is arranged inside the bracket body; the bracket body comprises a battery cell matching section located in the middle and end cap matching sections at both ends; the diameter of the battery cell matching section is smaller than the diameter of the end cap matching section; the battery cell matching section has an interference fit with the battery cell; the length of the battery cell matching section is greater than or equal to one third of the length of the battery cell. The present invention effectively ensures the stability and reliability of battery cell fixation by arranging an interference fit battery cell matching section on the bracket, and at the same time, the design that is free from demolding is more convenient for processing, and the contact area between the inner wall of the bracket and the battery cell is increased. The stability of battery cell installation is ensured by the interference fit between the end caps at both ends and the battery cell heads.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium batteries, and in particular to a battery group structure with multiple fixed battery cells. Background Art

[0002] With the progress and development of society, the intelligence of warehousing, home, travel and other aspects, and the diversification of mobile consumer electronic products, batteries, as a provider of clean energy, are increasingly sought after and favored by consumers and have become an indispensable part of electronic products.

[0003] During the application process, the reliability of battery grouping and electrical connection. In order to improve the reliability of the overall battery environment, to provide users with more peace of mind during use and to improve user recognition, it has become a very meaningful research topic. The cylindrical battery is fixed with two end faces of the bracket, and the bracket is tightened with screws to complete the fixation of the battery cell. This method is a hard connection, and there is a secondary correction of vibration coordination during use, which has a certain risk of uncertainty; Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art and to provide a battery group structure with multiple sections of fixed cells which has a reliable structure, a high safety factor, is simple to produce and is convenient to install.

[0005] The present invention is achieved by the following methods:

[0006] A battery grouping structure with multiple sections of fixed cells, comprising a cell 2 arranged inside a bracket 1 and end covers 3 arranged at both ends of the bracket 1; a nickel sheet 4 is connected to the end cover 3; an insulating plate 5 is arranged outside the nickel sheet 4, characterized in that: the bracket 1 includes at least one bracket body 11; a cell accommodating cavity is arranged inside the bracket body 11; the bracket body 11 includes a cell mating section 12 located in the middle and end cover mating sections 13 at both ends; the diameter of the cell mating section 12 is smaller than the diameter of the end cover mating section 13; the cell mating section 12 is interference fit with the cell 2; the length of the cell mating section 12 is greater than or equal to one third of the length of the cell 2.

[0007] Furthermore, a cell head fixing block 31 is provided at the bottom of the end cover 3, and a nickel sheet welding opening 32 is provided at the top; a plurality of buckles 33 are provided around the cell head fixing block 31; the buckles 33 cooperate with a plurality of slots 16 provided at the end of the end cover matching section 13.

[0008] Furthermore, the number of the buckles 33 and the slots 13 is at least four.

[0009] Furthermore, the cell head fixing block 31 is interference fit with the inner wall of the end cover fitting section 13 .

[0010] Furthermore, a guide transition section 15 is provided between the battery cell fitting section 12 and the end cover fitting section 13 ; the battery cell fitting section 12 , the end cover fitting section 13 , and the guide transition section 15 have the same wall thickness.

[0011] Furthermore, the bracket 1 is integrally formed by an injection molding process, and the battery cell accommodating cavity inside the bracket 1 has no draft surface.

[0012] Furthermore, a positioning column 14 is provided on the bracket body 11 ; the positioning column 14 matches with a positioning hole 41 provided on the nickel sheet 4 .

[0013] Furthermore, the bracket 1 includes five bracket bodies 11 connected in sequence.

[0014] The beneficial effects of the present invention are as follows: by providing an interference fit cell fitting section on the bracket, the stability and reliability of the cell fixing are effectively guaranteed, and the design free from mold draft is more convenient for processing, and the contact area between the inner wall of the bracket and the cell is increased. The stability of the cell installation is guaranteed by the interference fit between the end caps at both ends and the cell head. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 An exploded view of the grouped structure of the present invention;

[0017] Figure 2 A schematic diagram of the support structure of the present invention;

[0018] Figure 3 Schematic diagram of the end cover structure of the present invention; DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] Example:

[0023] like Figure 1-3 As shown, a battery grouping structure with multiple sections of fixed cells includes a cell 2 arranged inside a bracket 1 and end covers 3 arranged at both ends of the bracket 1; a nickel sheet 4 is connected to the end cover 3; an insulating plate 5 is arranged outside the nickel sheet 4, characterized in that: the bracket 1 includes at least one bracket body 11; a cell accommodating cavity is arranged inside the bracket body 11; the bracket body 11 includes a cell mating section 12 located in the middle and end cover mating sections 13 at both ends; the diameter of the cell mating section 12 is smaller than the diameter of the end cover mating section 13; the cell mating section 12 is interference fit with the cell 2; the length of the cell mating section 12 is greater than or equal to one third of the length of the cell 2.

[0024] In one embodiment of the present invention, a cell head fixing block 31 is provided at the bottom of the end cover 3, and a nickel sheet welding opening 32 is provided at the top; a plurality of clips 33 are provided in the circumference of the cell head fixing block 31; the clips 33 cooperate with a plurality of slots 16 provided at the end of the end cover mating section 13.

[0025] In one embodiment of the present invention, the number of the buckles 33 and the slots 13 is at least four.

[0026] In one embodiment of the present invention, the cell head fixing block 31 is interference fit with the inner wall of the end cover fitting section 13 .

[0027] In one embodiment of the present invention, a guide transition section 15 is provided between the cell fitting section 12 and the end cover fitting section 13 ; the cell fitting section 12 , the end cover fitting section 13 , and the guide transition section 15 have the same wall thickness.

[0028] In one embodiment of the present invention, the bracket 1 is integrally formed by an injection molding process, and the battery cell accommodating cavity inside the bracket 1 has no draft surface.

[0029] In one embodiment of the present invention, a positioning column 14 is disposed on the bracket body 11 ; the positioning column 14 matches with a positioning hole 41 disposed on the nickel sheet 4 .

[0030] In one embodiment of the present invention, the bracket 1 includes five bracket bodies 11 connected in sequence.

[0031] The bracket 1 of the present invention can be used in any combination according to the needs. Due to its unique internal design, it can be conveniently and quickly injection molded without the need for a mold draft design, which greatly improves the contact stability between the battery cell and the bracket.

[0032] The present invention effectively ensures the stability and reliability of the battery cell fixation by arranging an interference fit battery cell fitting section on the bracket, and at the same time, the design is free from mold draft, which is more convenient for processing and increases the contact area between the inner wall of the bracket and the battery cell. The stability of the battery cell installation is ensured by the interference fit between the end caps at both ends and the battery cell head.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A battery group structure with multiple fixed cells, comprising a cell (2) arranged inside a bracket (1) and end covers (3) arranged at both ends of the bracket (1); a nickel sheet (4) is connected to the end cover (3); an insulating plate (5) is arranged outside the nickel sheet (4), characterized in that: The support (1) comprises at least one support body (11); a battery cell accommodating cavity is provided in the support body (11); the support body (11) comprises a battery cell matching section (12) located in the middle and end cover matching sections (13) at both ends; the diameter of the battery cell matching section (12) is smaller than the diameter of the end cover matching section (13); the battery cell matching section (12) and the battery cell (2) are interference fit; the length of the battery cell matching section (12) is greater than or equal to one third of the length of the battery cell (2); The bottom of the end cover (3) is provided with a cell head fixing block (31), and the top is provided with a nickel sheet welding opening (32); a plurality of buckles (33) are provided in the circumferential direction of the cell head fixing block (31); the buckles (33) are matched with a plurality of slots (16) provided at the end of the end cover matching section (13); the cell head fixing block (31) is interference-fitted with the inner wall of the end cover matching section (13); and a guide transition section (15) is provided between the cell matching section (12) and the end cover matching section (13).

2. A battery group structure with multiple fixed cells according to claim 1, characterized in that: The number of the buckles (33) and the slots (16) is at least four.

3. The battery group structure with multiple fixed cells according to claim 1, characterized in that: The battery core matching section (12), the end cover matching section (13), and the guide transition section (15) have the same wall thickness.

4. The battery group structure with multiple fixed cells according to claim 1, characterized in that: The bracket (1) is integrally formed by an injection molding process, and the battery cell accommodating cavity inside the bracket (1) has no draft surface.

5. The battery group structure with multiple fixed cells according to claim 1, characterized in that: The bracket body (11) is provided with a positioning column (14); the positioning column (14) matches with a positioning hole (41) provided on the nickel sheet (4).

6. The battery group structure with multiple fixed cells according to claim 1, characterized in that: The support (1) comprises five support bodies (11) connected in sequence.

Images