CN213340653U

CN213340653U - Stable busbar with bilateral insurance

Info

Publication number: CN213340653U
Application number: CN202021960447.0U
Authority: CN
Inventors: 陈阿文; 王维乐; 夏建平
Original assignee: Fujian Scud Power Technology Co Ltd
Current assignee: Fujian Scud Power Technology Co Ltd
Priority date: 2020-09-09
Filing date: 2020-09-09
Publication date: 2021-06-01
Anticipated expiration: 2030-09-09

Abstract

The utility model discloses a stable bus bar with bilateral insurance, which comprises a base and a plurality of pad holes evenly distributed on the base; a pad is arranged in the pad hole; the welding pad is connected with the base only through the lugs symmetrically arranged on two sides, and the rest parts of the periphery of the welding pad are spaced from the base by a certain distance through welding pad holes; a shunting groove is arranged on the bonding pad; the base is provided with a positioning hole. Through the utmost point ear structure that sets up special construction in pad bilateral symmetry for the busbar possesses the function of insurance fusing, and the structural design of utmost point ear can also improve the anti-seismic performance of busbar simultaneously, and it is stable to improve the welding process, takes bilateral insurance, and the low price, sexual valence relative altitude.

Description

Stable busbar with bilateral insurance

Technical Field

The utility model relates to a lithium cell technical field especially involves a stable busbar of taking bilateral insurance.

Background

Fuse modules are selected in the fields of the existing electric automobile, an energy storage power supply, a shared trip and the like, and the fuse is generally connected by using a fuse box, so that the structure is complex and the cost is high. It is difficult to cope with the abnormal state if the fuse module is not used. In the use process of the power battery in a sharing trip, the working condition is complex and the environment is very severe. These uncertain environments may cause many abnormal accidents, and internal short circuit, external needle stick, external extrusion, external impact, etc. may occur in the internal power battery. In this case, if the battery does not have a fuse module, the battery may burn, and the entire battery may be subjected to risks such as smoking, fire, and even explosion.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the weak point among the above-mentioned prior art and provide a stable busbar of taking bilateral insurance, with low costs, stability is high, takes dual fail-safe characteristic, can improve a stable busbar of taking bilateral insurance of the factor of safety of battery effectively.

The utility model discloses a realize through following mode:

the utility model provides a stable busbar of taking bilateral insurance which characterized in that: the device comprises a base and a plurality of pad holes uniformly distributed on the base; a pad is arranged in the pad hole; the welding pad is connected with the base only through the lugs symmetrically arranged on two sides, and the rest parts of the periphery of the welding pad are spaced from the base by a certain distance through welding pad holes; a shunting groove is arranged on the bonding pad; the base is provided with a positioning hole.

Further, the pad and the base are in the same plane.

Further, the pad is not coplanar with the base.

Further, the pad is circular or elliptical.

Furthermore, the width of the tab is 1-1.5 mm.

Further, the tab is arc-shaped.

Furthermore, the splitter box is in one of a straight shape, an I shape, an S shape and a Z shape.

The beneficial effects of the utility model reside in that: through the utmost point ear structure that sets up special construction in pad bilateral symmetry for the busbar possesses the function of insurance fusing, and the structural design of utmost point ear can also improve the anti-seismic performance of busbar simultaneously, and it is stable to improve the welding process, takes bilateral insurance, and the low price, sexual valence relative altitude.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic view of a nickel sheet structure of the present invention;

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" 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 device or element to which the reference is made 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" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

as shown in fig. 1, a stable bus bar with double-sided fuse is characterized in that: the device comprises a base 1 and a plurality of pad holes 2 uniformly distributed on the base 1; a bonding pad 3 is arranged in the bonding pad hole 2; the welding pad 3 is connected with the base 1 only through the lugs 4 symmetrically arranged on two sides, and the rest parts of the periphery of the welding pad 3 are spaced from the base 1 through the welding pad hole 2; a shunting groove 5 is arranged on the bonding pad 3; the base 1 is provided with a positioning hole 6.

Further, the pad 3 and the base 1 are in the same plane.

Further, the pad 3 is not coplanar with the base 1.

Further, the pad 3 is circular or elliptical.

Further, the width of the tab 4 is 1-1.5 mm.

Further, the tab 4 is arc-shaped.

Further, the splitter box 5 is one of a straight shape, an I-shape, an S-shape and a Z-shape.

The function of busbar is to realize the connection between the electricity core, collects to BMS board or other output through the busbar. When aging short circuit, external needling, external impact or external extrusion occur inside the battery cell, high-temperature gas can be ejected out of the positive electrode of the battery cell, current which is 3 times higher than rated current is generated, and the current can reach more than 90 Ah. The utility model discloses the busbar has bilateral utmost point ear, can guarantee to last 10 seconds internal fusing at 35 Ah. After the busbar is fused, the current can be isolated from continuously diffusing to peripheral electric cores, and high-temperature gas can be isolated from spreading to the periphery. Therefore, the function of a fuse can be achieved, and delay burning between the battery cores is prevented.

The base 1 is provided to ensure the flow and normal output of all the current. The bus bar is fixed in position by the positioning hole 6, and welding precision and position degree are guaranteed. The bonding pad 3 is oval or round, can be in the same plane with the base, also can be in different planes, can specifically adjust according to the application. Bilateral utmost point ear is equipped with between pad 3 and the base 1, and the width of utmost point ear is 1 ~ 1.5mm, ensures that the sectional area reaches fusing in 35Ah electric current 10 s. Because can use laser welding or resistance weld between busbar and the electric core, the utility model discloses a bilateral utmost point ear can ensure that welding process in plane degree is stable, and welding process in the electric current even, guarantees to weld DOE parameter stability.

The bonding pad 3 with the structure of the utility model is connected with the base 1 through the pole ear 4 with a special structure, thereby realizing multiple functional requirements and bringing better use experience; when the bonding pad 3 and the base 1 are on the same plane, the bonding pad is closer to a bus bar with a traditional structure, the application area and the universality are stronger, the narrow-line design form of the tab 4 can ensure that the tab can be quickly fused when a large current passes through the tab, the protection effect is achieved, and meanwhile, the design of the bonding pad hole 2 can ensure that heat can be quickly dissipated when a battery is short-circuited;

when the bonding pad 3 and the base 1 are on different planes, the tab 4 not only serves as a fuse, but also has an elastic damping function, so that the fracture when the bonding pad and the base fall off is avoided; the shock absorption effect can be further enhanced by changing the shape of the arc line of the tab 4; through the utmost point ear structure that sets up special construction in pad bilateral symmetry for the busbar possesses the function of insurance fusing, and the structural design of utmost point ear can also improve the anti-seismic performance of busbar simultaneously, and it is stable to improve the welding process, takes bilateral insurance, and the low price, sexual valence relative altitude.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a stable busbar of taking bilateral insurance which characterized in that: comprises a base (1) and a plurality of pad holes (2) which are uniformly distributed on the base (1); a pad (3) is arranged in the pad hole (2); the welding pad (3) is connected with the base (1) only through the lugs (4) symmetrically arranged on two sides, and the rest parts of the periphery of the welding pad (3) are spaced from the base (1) through the welding pad hole (2); a shunting groove (5) is arranged on the bonding pad (3); the base (1) is provided with a positioning hole (6).

2. A stable double-sided insurance bus bar as set forth in claim 1, wherein: the bonding pad (3) and the base (1) are in the same plane.

3. A stable double-sided insurance bus bar as set forth in claim 1, wherein: the pad (3) is not coplanar with the base (1).

4. A stable double-sided insurance bus bar as set forth in claim 1, wherein: the bonding pad (3) is circular or oval.

5. A stable double-sided insurance bus bar as set forth in claim 1, wherein: the width of the tab (4) is 1-1.5 mm.

6. A stable double-sided insurance bus bar as set forth in claim 1, wherein: the tab (4) is arc-shaped.

7. A stable double-sided insurance bus bar as set forth in claim 1, wherein: the splitter box (5) is in one of a straight shape, an I shape, an S shape and a Z shape.