Anti-bulging type punching net plate grid

Abstract

The utility model discloses an anti-bulging type punching net plate grid. The part, located between a vertical frame rib and an adjacent vertical rib, of a transverse rib is bifurcated into two ribs from the vertical rib side, and the two ribs are connected with the vertical frame rib. According to the anti-bulging type punching net plate grid, the part, located between the vertical frame rib and the adjacent vertical rib, of the transverse rib is bifurcated into two parts from the vertical rib side to be connected with the vertical frame rib, so that two contact points are formed between the transverse rib and the vertical frame ribs on the two sides, namely, stress points are increased; the deformation of the grid at the joint of the transverse ribs and the vertical frame ribs in the use process of the lead storage battery can be reduced, and the strength of the grid is improved. Meanwhile, when the lead plaster is attached to the edge of the grid, due to the existence of the transverse rib forking structure, the contact area of the lead plaster and the grid is increased, the contact surface is tighter, the lead plaster and the grid are combined more firmly, the internal resistance of the grid is reduced, and the service life of the battery is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of lead-acid batteries, and particularly relates to an anti-bulging punched grid plate. Background Art

[0002] The common structure of the punched grid plate of a lead-acid battery is composed of a ribbed outer frame strengthened around the perimeter, lugs at the head, and internal thin rib strips. Its main functions are to support the active material, serve as the carrier of the active material, and act as the conductor of the active material. The main material is a lead-based alloy, which collects and transmits the electric charge stored in the active material through the grid plate. Since the lead paste is very tightly connected to the grid plate, and the molar volume of lead sulfate and lead differs by 1.6 times during the charge and discharge process of the lead paste. While the grid plate, as the supporting carrier, has a basically unchanged volume. Since the positive side of the electrode plate is under pressure inside the battery, the volume expansion direction is mostly towards the side of the electrode plate. Due to the expansion of the lead paste, the grid plate is pulled by the extrusion force, resulting in the expansion of the negative grid plate, and even the grid partition being broken, leading to an accelerated battery failure.

[0003] As Figure 1 shown, a grid plate of an existing lead-acid battery mainly consists of an upper frame rib, a lower frame rib, and two vertical frame ribs on both sides that form a frame. The upper frame rib is provided with lugs, and horizontal ribs and vertical ribs are arranged inside the frame.

[0004] The negative electrode plate of the battery mainly consists of an active material, a grid plate, and certain additives. The negative active material is porous (sponge-like) Pb, which is coated on the surface of the negative grid plate and adhered to the grid plate through curing. The grid plate serves as the carrier and current collector of the active material and does not participate in chemical reactions. Since the lead paste is very tightly connected to the grid plate, and the molar volume of lead sulfate and lead differs by 1.6 times during the charge and discharge process of the lead paste. While the grid plate, as the supporting carrier, has a basically unchanged volume. Since the positive side of the electrode plate is under pressure inside the battery, the volume expansion direction is mostly towards the side of the electrode plate. Due to the expansion of the lead paste, the grid plate is pulled by the extrusion force, and the negative grid plate expands under the force of stretching towards the vertical frame rib. When the expansion is too large and exceeds the yield length of the lead plate, the intersection of the horizontal rib and the vertical frame rib will be broken, leading to an accelerated battery failure. Summary of the Utility Model

[0005] In view of the above deficiencies in the prior art, the utility model provides an anti-bulging punched grid plate.

[0006] An anti-bulging punched grid plate includes a frame surrounded by an upper frame rib, a lower frame rib, and two vertical frame ribs on both sides. The upper frame rib is provided with lugs, and horizontal ribs and vertical ribs are arranged inside the frame. The part of the horizontal rib between the vertical frame rib and an adjacent vertical rib bifurcates into two branches from the side of the vertical rib to connect the vertical frame ribs.

[0007] Preferably, the thickness of each of the two branches of the horizontal rib is the same as that of the remaining non-branched part.

[0008] Preferably, the distance between the two branches of the horizontal rib at the connection ends with the vertical frame ribs is 1 / 4 to 3 / 4 of the distance between the non-branched parts of adjacent horizontal ribs.

[0009] Preferably, the angles between the two branches of the horizontal rib and the non-branched part are equal.

[0010] Preferably, at least part of the vertical ribs located between the upper frame rib and an adjacent horizontal rib bifurcate from the horizontal rib into two to connect the upper frame rib.

[0011] More preferably, among the vertical ribs, except for the two adjacent to the vertical frame ribs on both sides, the parts of the remaining vertical ribs located between the upper frame rib and an adjacent horizontal rib bifurcate from the horizontal rib into two to connect the upper frame rib.

[0012] Further preferably, the thickness of each of the two branches of the vertical rib is the same as that of the remaining non-branched part.

[0013] Further preferably, the angles between the two branches of the vertical rib and the non-branched part are equal.

[0014] In the anti-bulging punching grid plate of the present utility model, the part of the horizontal rib located between the vertical frame rib and an adjacent vertical rib bifurcates from the side of the vertical rib into two to connect the vertical frame rib. Thus, there are two contact points between the horizontal rib and the vertical frame ribs on both sides, that is, the stress points are increased, which can reduce the deformation amount of the grid at the connection between the horizontal rib and the vertical frame rib during the use of the lead-acid battery and improve the grid strength. At the same time, when the lead paste adheres to the edge of the grid, due to the existence of the bifurcated structure of the horizontal rib, the contact area between the lead paste and the grid increases, the contact surface is tighter, the combination of the lead paste and the grid is more firm, the internal resistance of the grid is reduced, and the battery life is improved. Description of the Drawings

[0015] Figure 1 Schematic diagram of the structure of a commonly used grid in the prior art.

[0016] Figure 2 Schematic diagram of the structure of the anti-bulging punching grid plate of the present utility model.

[0017] Reference numerals: upper frame rib 1, lower frame rib 2, vertical frame rib 3, ear 4, horizontal rib 5, vertical rib 6. Detailed Embodiments

[0018] As Figure 2As shown in the figure, an anti-bulging punching grid plate includes a frame surrounded by an upper frame rib 1, a lower frame rib 2, and two vertical frame ribs 3 on both sides. An ear 4 is provided on the upper frame rib 1, and a horizontal rib 5 and a vertical rib 6 are provided inside the frame.

[0019] Each horizontal rib 5 is evenly spaced. The part of the horizontal rib 5 between the vertical frame rib 3 and an adjacent vertical rib 6 bifurcates into two from the side of the vertical rib 6 to connect the vertical frame rib 3.

[0020] In a preferred embodiment, the thickness of each of the two bifurcated parts of the horizontal rib 5 is the same as that of the remaining non-bifurcated part. The distance between the connection ends of the two bifurcated parts of the horizontal rib 5 and the vertical frame rib 3 is 1 / 4 to 3 / 4 of the distance between the non-bifurcated parts of two adjacent horizontal ribs 5. The angles between the two bifurcated parts of the horizontal rib 5 and the non-bifurcated part are equal. That is to say, the distance between the contact points of the two ends of the horizontal rib 5 after bifurcation and the two vertical frame ribs 3 on both sides is equal, which can make the force on the vertical frame rib 3 more uniform during use.

[0021] The part of the horizontal rib 5 between the vertical frame rib 3 and an adjacent vertical rib 6 bifurcates into two from the side of the vertical rib 6 to connect the vertical frame rib 3. Thus, there are two contact points between the horizontal rib 5 and the vertical frame ribs 3 on both sides, that is, the number of force points is increased, which can reduce the deformation amount of the grid plate at the connection between the horizontal rib 5 and the vertical frame rib 3 during the use of the lead-acid battery and improve the grid plate strength. At the same time, when the lead paste adheres to the edge of the grid plate, due to the existence of the bifurcated structure of the horizontal rib 5, the contact area between the lead paste and the grid plate increases, the contact surface is tighter, the combination of the lead paste and the grid plate is more firm, the internal resistance of the grid plate is reduced, and the battery life is improved.

[0022] In a preferred embodiment, at least part of the vertical rib 6 between the upper frame rib 1 and an adjacent horizontal rib 5 bifurcates into two from the horizontal rib 5 to connect the upper frame rib 1. Based on the same principle as the bifurcation of the horizontal rib 5, bifurcating the vertical rib 6 can also reduce the deformation amount at the corresponding position during the use of the grid plate and improve the grid plate strength.

[0023] However, during the use of the lead-acid battery, the grid plate is supported on the bottom of the battery case at the bottom surface and is not easily deformed. Therefore, no bifurcation is provided at the connection between the bottom end of the vertical rib 6 and the lower frame rib 2 because the effect of bifurcating the bottom end of the vertical rib 6 is relatively small.

[0024] Moreover, the corners at the joints of the two ends of the upper frame rib 1 and the vertical frame ribs 3 on both sides provide sufficient strength by themselves, so the two vertical ribs 6 close to the vertical frame ribs 3 on both sides do not bifurcate at the joints with the upper frame rib 1. That is, among the vertical ribs 6, except for the two close to the vertical frame ribs 3 on both sides, the part of the remaining vertical ribs 6 between the upper frame rib 1 and an adjacent horizontal rib 5 bifurcates from the horizontal rib 5 into two to connect the upper frame rib 1.

[0025] In a preferred embodiment, the thickness of each of the two bifurcated vertical ribs 6 is the same as that of the remaining non-bifurcated part. The angles between the two bifurcated vertical ribs 6 and the non-bifurcated part are equal.

Claims

1. An anti-bulging type punching grid, comprising a frame surrounded by an upper frame rib, a lower frame rib and two vertical frame ribs on both sides, wherein the upper frame rib is provided with a pole ear, and the frame is provided with transverse ribs and vertical ribs, characterized in that: The portion of the transverse rib located between the vertical frame rib and an adjacent vertical rib is bifurcated from the vertical rib side into two ribs connected to the vertical frame rib.

2. The anti-bulging type punched mesh grid according to claim 1, characterized in that: The thickness of each of the two bifurcated transverse ribs is consistent with the thickness of the remaining unbifurcated portion.

3. The anti-bulging type punched mesh grid according to claim 1, characterized in that: The distance between the two bifurcated ends of the transverse ribs and the connection ends with the vertical frame ribs is 1 / 4 to 3 / 4 of the distance between the unbifurcated parts of two adjacent transverse ribs.

4. The anti-bulging type punched mesh grid according to claim 1, characterized in that: The angles between the two bifurcated transverse ribs and the unbifurcated portion are equal.

5. The anti-bulging type punched mesh grid according to claim 1, characterized in that: At least part of the vertical ribs located between the upper frame rib and an adjacent transverse rib is bifurcated from the transverse rib into two ribs connected to the upper frame rib.

6. The anti-bulging type punched mesh grid according to claim 5, characterized in that: Among the vertical ribs, except for the two vertical ribs close to the two side vertical frame ribs, the remaining vertical ribs located between the upper frame rib and an adjacent transverse rib are bifurcated from the transverse rib into two connecting the upper frame ribs.

7. The anti-bulging type punched mesh grid according to claim 6, characterized in that: The thickness of each of the two forked vertical ribs is consistent with the thickness of the remaining unforked portion.

8. The anti-bulging type punched mesh grid according to claim 6, characterized in that: The angles between the two bifurcated vertical ribs and the unbifurcated portion are equal.

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