CN218548483U

CN218548483U - Storage battery grid and storage battery

Info

Publication number: CN218548483U
Application number: CN202222489357.3U
Authority: CN
Inventors: 徐寅洲; 张友; 李越南
Original assignee: Tianneng Battery Group Co Ltd
Current assignee: Tianneng Battery Group Co Ltd
Priority date: 2022-09-20
Filing date: 2022-09-20
Publication date: 2023-02-28
Anticipated expiration: 2032-09-20

Abstract

The utility model discloses a battery grid and battery wherein discloses a battery grid, including the grid main part and locate the utmost point ear of grid main part upside, the grid main part includes frame and a plurality of crisscross horizontal rib and the vertical rib that forms network structure of each other in the frame, horizontal rib is equipped with the through-hole that sets up along grid main part thickness direction with vertical rib handing-over department. The utility model also discloses a battery adopts aforementioned battery grid. The utility model discloses a grid can effectively increase the area of contact between grid and the lead plaster, reduces the contact internal resistance between grid and the lead plaster active material, consequently uses the capacity of the battery of this grid can obtain effectual promotion, can also improve the heavy current discharge capacity of battery simultaneously.

Description

Storage battery grid and storage battery

Technical Field

The utility model relates to a grid field, in particular to battery grid and battery.

Background

The grid is used as an important component of the storage battery, mainly used for supporting the active substance, is a carrier of the active substance, and is used as a conductor of the active substance, the main material is lead-based alloy, and the electric quantity stored by the active substance is converged and transmitted through the grid, so that the contact area between the active substance and the grid is increased, the utilization rate of the active substance can be effectively increased, and the service life and the performance of the battery are improved.

The main cause of grid failure is corrosion, and the corrosion generally starts from the joint of the grid ribs to be corroded outwards, so that the intergranular corrosion at the joint can be reduced, and the corrosion resistance of the grid can be improved.

The common lead-acid storage battery grid punching plate grid structure is formed by connecting a rib outer frame with reinforced periphery, a tab at the head and an internal thin rib, but the junction of a transverse rib and a vertical rib of the grid with the structure is generally a current gathering and concentrating region with relatively large current, the chamfer at the junction is small, the stress is concentrated, the crystal boundary is easy to break, and the intergranular corrosion is easy to occur; meanwhile, the contact area between the grid and the active material is small, the contact internal resistance is large, the conductivity is poor, the large-current discharge performance is poor, and the cycle life is short.

In the prior art, a novel lead storage battery grid disclosed in chinese patent publication No. CN202817100U also includes a grid frame, a tab is provided on the grid frame, a grid body is provided in the grid frame, a plurality of main transverse ribs and main oblique ribs are provided in the grid body, and a plurality of circular grids are provided in the grid body; the frame of the grid is rectangular, the length of the frame is 60-65mm, and the width of the frame is 40-45mm; the diameter of the circular grid is 6-8mm; and a circular hole for increasing the conductive performance is formed in the lug.

The lead storage battery grid disclosed in the patent also has the problems that the current in a confluence concentration area is relatively large, the stress is concentrated, the crystal boundary is easy to break, and intergranular corrosion is easy to occur.

SUMMERY OF THE UTILITY MODEL

For solving the problem that exists among the prior art, the utility model provides a battery grid and battery.

The utility model provides a storage battery grid, includes the grid main part and locates the utmost point ear of grid main part upside, the grid main part includes frame and a plurality of horizontal rib and the vertical rib that form network structure in the frame each other in the crisscross, horizontal rib and vertical rib handing-over department are equipped with the through-hole that sets up along grid main part thickness direction.

Specifically, the structure of the through hole is arranged at the intersection of the transverse ribs and the vertical ribs, so that overlarge current at the intersection of the transverse ribs and the vertical ribs can be effectively prevented, the current density at the intersection of the transverse ribs and the vertical ribs can be effectively dispersed, the intercrystalline stress and intercrystalline corrosion of a grid can be further reduced, the corrosion resistance of the grid can be improved, and the service life of a storage battery using the grid can be further prolonged;

the grid with the structure can effectively increase the contact area between the grid and the lead plaster and reduce the contact internal resistance between the grid and the lead plaster active substance, so the capacity of the storage battery using the grid can be effectively improved, and the large-current discharge capacity of the storage battery can be improved.

Preferably, the horizontal ribs and the vertical ribs are staggered to form a grid, and the horizontal ribs and the vertical ribs of the grid are connected through fillets.

The structure that the horizontal ribs and the vertical ribs of the grid are connected through the round corners enables the through holes to be evenly stressed all around, stress concentration is not prone to occurring, tensile strength between the horizontal ribs and the vertical ribs is effectively improved, tensile resistance of the grid is effectively improved, and strength of the grid is effectively improved.

Preferably, the thickness of the grid is 0.5-1.3mm.

Preferably, the width of the transverse ribs is 0.7-1.2mm, and the width of the vertical ribs is 0.7-1.2mm.

Specifically, the transverse ribs and the vertical ribs of the grid should have certain strength to maintain the shape of the grid and serve as adhesion of lead paste on one hand, and certain tensile property to improve the service life of the grid on the other hand, so that the transverse ribs and the vertical ribs should have sufficient width, but if the transverse ribs and the vertical ribs are too wide, the grid is too small, the performance of the grid is negatively affected by too small grid, and therefore, it is appropriate to limit the width of the transverse ribs and the vertical ribs to 0.7-1.2mm.

Preferably, the radius of the fillet is 2-5mm.

Specifically, in order to enable the periphery of the through hole to be stressed uniformly and not to generate stress concentration easily, the transverse ribs and the longitudinal ribs of the grid are connected by the fillets, however, if the fillets are too small, stress concentration is easily caused, if the fillets are too large, the size of the grid is too small, and if the size of the grid is too small, negative influence is generated on the performance of the grid; therefore, the fillet radius is limited to be between 2 and 5mm, and the fillet with the size is not easy to generate stress concentration on one hand and has small influence on the size of the mesh on the other hand.

Preferably, the through hole is a round hole with the diameter of 1-4mm.

Specifically, compared with through holes in other shapes such as a rectangle, a diamond shape and a triangle, the stress of the hole wall of the circular hole is uniform, stress concentration is not easy to generate, and the tensile strength of the transverse ribs and the vertical ribs can be improved to the maximum extent, so that the tensile resistance and the strength of the grid are improved to the maximum extent.

A battery employs a battery grid as described in any one of the above.

Compared with the prior art, the utility model discloses an useful part lies in:

(1) The structure that sets up the through-hole in the crossing department of horizontal rib and vertical rib can effectually prevent that the crossing department electric current of horizontal rib and vertical rib is too big, and the current density of the crossing department of horizontal rib and vertical rib effectively disperses, and then reduces intergranular stress and the intergranular corrosion of grid, improves the corrosion resistance of grid, and then improves the life-span of the battery that uses this grid.

(2) The structure that the horizontal rib and the vertical rib of net pass through the fillet and connect for the through-hole atress is even all around, and difficult production stress concentration effectively improves the tensile strength between horizontal rib and the vertical rib, and then effectively improves the tensile resistance performance of grid, and the slight of grid is effectively improved.

(3) The grid with the structure can effectively increase the contact area between the grid and the lead plaster and reduce the contact internal resistance between the grid and the lead plaster active substance, so the capacity of the storage battery using the grid can be effectively improved, and the large-current discharge capacity of the storage battery can be improved.

Drawings

Fig. 1 is a schematic plan view of a battery grid provided by the present invention;

fig. 2 is a schematic perspective view of a storage battery grid provided by the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 and 2, the battery grid includes a grid main body and a tab 11 disposed on an upper side of the grid main body, the grid main body includes a frame 10 and a plurality of transverse ribs 20 and vertical ribs 30 which are interlaced in the frame 10 to form a mesh structure, and through holes 50 disposed along a thickness direction of the grid main body are disposed at intersections of the transverse ribs 20 and the vertical ribs 30.

The transverse ribs 20 and the vertical ribs 30 are staggered to form a grid 40, and the transverse ribs 20 and the vertical ribs 30 of the grid 40 are connected through fillets 41.

The thickness of the grid is 0.5-1.3mm.

The width of the transverse ribs 20 is 0.7-1.2mm and the width of the vertical ribs 30 is 0.7-1.2mm.

The transverse ribs 20 and the vertical ribs 30 of the grid should have a certain strength to maintain the shape of the grid and to be adhered with lead paste, and a certain tensile property to prolong the service life of the grid, so that the transverse ribs 20 and the vertical ribs 30 should have a sufficient width, but if the transverse ribs 20 and the vertical ribs 30 are too wide, the grid 40 is too small, and the grid 40 is too small, which may negatively affect the performance of the grid, so that it is appropriate to limit the width of the transverse ribs 20 and the vertical ribs 30 to 0.7-1.2mm.

The radius of the fillet 41 is 2-5mm.

In order to ensure that the stress on the periphery of the through hole 50 is uniform and stress concentration is not easy to generate, the transverse ribs 20 and the longitudinal ribs 30 of the grid 40 are connected by the fillets 41, however, if the fillets 41 are too small, stress concentration is easy to cause, if the fillets 41 are too large, the size of the grid 40 is too small, and if the size of the grid 40 is too small, negative influence is generated on the performance of the grid; the radius of the fillet 41 is limited to 2-5mm, and the fillet 41 with the size is not easy to generate stress concentration on one hand, and has small influence on the size of the grid 40 on the other hand.

The through hole 50 is a circular hole with a diameter of 1-4mm.

Compared with the through holes 50 in other shapes such as rectangle, rhombus, triangle and the like, the hole wall of the circular hole is uniformly stressed, stress concentration is not easy to generate, and the tensile strength of the transverse ribs 20 and the vertical ribs 30 can be improved to the maximum extent, so that the tensile resistance and the strength of the grid are improved to the maximum extent.

A storage battery adopts the storage battery grid.

The structure that the through holes 50 are formed in the crossed positions of the transverse ribs 20 and the vertical ribs 30 can effectively prevent overlarge current at the crossed positions of the transverse ribs 20 and the vertical ribs 30, effectively disperse the current density at the crossed positions of the transverse ribs 20 and the vertical ribs 30, further reduce intercrystalline stress and intercrystalline corrosion of a grid, improve the corrosion resistance of the grid, and further prolong the service life of a storage battery using the grid.

The structure that horizontal rib 20 and vertical rib 30 of net 40 pass through fillet 41 and connect for through-hole 50 atress is even all around, is difficult for producing stress concentration, effectively improves the tensile strength between horizontal rib 20 and the vertical rib 30, and then effectively improves the tensile resistance performance of grid, and the intensity of grid is effectively improved.

Claims

1. The utility model provides a storage battery grid, includes the grid main part and locates the utmost point ear of grid main part upside, the grid main part includes frame and a plurality of horizontal rib and the vertical rib that form network structure in the frame each other in the crisscross, its characterized in that, horizontal rib and vertical rib handing-over department are equipped with the through-hole that sets up along grid main part thickness direction.

2. The battery grid of claim 1, wherein the transverse ribs and the vertical ribs are staggered to form a grid, and wherein the transverse ribs and the vertical ribs of the grid are connected by rounded corners.

3. The battery grid of claim 2, wherein the grid has a thickness of 0.5-1.3mm.

4. The battery grid of claim 3, wherein the transverse ribs have a width of 0.7-1.2mm and the vertical ribs have a width of 0.7-1.2mm.

5. The battery grid of claim 4, wherein the radius of the rounded corners is 2-5mm.

6. The battery grid of claim 5, wherein the through-holes are round holes having a diameter of 1-4mm.

7. An accumulator, characterized in that the accumulator grid according to any one of claims 1-6 is used.