Reinforced punching net plate grid

Abstract

The utility model discloses a reinforced punching net plate grid which comprises a frame defined by an upper frame rib, a lower frame rib and two vertical frame ribs on the two sides, and the middle portions of the two vertical frame ribs on the two sides are punched towards the same side to form pressing edges protruding out of the plane where the frame is located. The middle parts of the vertical frame ribs in the frame are punched towards the same side to form the pressing edges protruding out of the plane where the frame is located, the frame, subjected to edge pressing, of the punched mesh grid and the plane of the grid body are not located on the same plane, equivalently, the frame serves as a reinforcing rib, the strength of the grid is improved, and the service life of the grid is prolonged. And the deformation quantity of the grid in the use process can be reduced. When the lead paste is attached to the edge of the grid, the contact area of the lead paste and the grid is increased, the contact surface is tighter, the lead paste and the grid are combined more tightly, 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 in particular relates to a reinforced punched mesh grid. Background Art

[0002] The lead-acid battery plate includes a grid and an active material coated on the grid. The grid includes a frame formed by an upper frame rib, a lower frame rib and two vertical frame ribs on both sides. The frame has staggered vertical and horizontal ribs inside, and a pole ear is also provided on the upper frame rib.

[0003] The main function of the grid is to support the active material, to be the carrier of the active material, and to serve as the conductor of the active material. The main material is lead-based alloy, which converges and transmits the electricity stored in the active material through the grid. Since the lead paste is very tightly connected to the grid, and the molar volume of lead sulfate and lead in the lead paste differs by 1.6 times during the charge and discharge process, the grid, as a supporting carrier, has a basically unchanged volume. Since the plate is under pressure on the front side of the battery, most of the volume expansion direction is toward the side of the plate. Due to the expansion of the lead paste, the grid is pulled by the extrusion force, causing the grid to expand, and even the grid partition ribs are broken, causing the battery to fail faster.

[0004] For example, the utility model with publication number CN2452143Y discloses a valve-regulated sealed lead-acid battery grid, which is composed of a grid ear, a frame, and ribs. The cross-section of the ribs is circular or elliptical, and the intersection of the ribs is an arc transition of R1 to 2 mm; the distribution density of the longitudinal ribs gradually decreases from the bottom of the pole ear to both sides, and the distribution density of the transverse ribs gradually decreases from near to far from the pole ear; the width of the left and right frames is smaller than the width of the upper and lower frames.

[0005] In the prior art, the grid frame is on the same plane as the internal horizontal and vertical ribs, and the frame width is wider than the horizontal and vertical ribs. When the lead paste is attached to the grid frame, the plane adhesion is small, and the lead paste is not easy to stick, resulting in the separation of the board paste, increasing the internal resistance of the battery, and reducing the battery life. The grid frame is a uniform plane. When the lead paste expands, the side frame of the grid is stretched and expanded. When the expansion is too large and exceeds the yield length of the lead plate, the intersection of the horizontal ribs, vertical ribs and side frames will be easily broken, resulting in accelerated battery failure. Utility Model Content

[0006] The utility model aims at the above-mentioned technical problems existing in the prior art and provides a reinforced punched mesh grid.

[0007] A reinforced punched mesh grid comprises a frame formed by an upper frame rib, a lower frame rib and two vertical frame ribs on both sides, wherein parts of the two vertical frame ribs on both sides are punched toward the same side to form a pressed edge protruding from the plane where the frame is located.

[0008] Preferably, the pressed edge is formed by stamping the outer portion of the vertical frame rib.

[0009] Preferably, the width of the pressed edge is 50% to 70% of the width of the vertical frame rib.

[0010] Preferably, the pressed edge is a continuous section or at least two sections distributed in sections in the length direction.

[0011] More preferably, the total length of the edge pressing on the same vertical frame rib is 50% to 95% of the length of the vertical frame rib.

[0012] Preferably, the height of the edge pressing protruding from the plane where the frame is located is 0.5 to 1.5 times the thickness of the vertical frame ribs.

[0013] Preferably, the upper frame ribs are provided with pole ears, and the frame is provided with crisscrossing horizontal ribs and vertical ribs.

[0014] The reinforced punched mesh grid of the utility model is formed by punching part of the vertical frame ribs in the frame to the same side to form a pressing edge protruding from the plane where the frame is located. The punched mesh grid frame and the plane of the grid body are not on the same plane after the pressing edge, which is equivalent to a reinforcing rib on the frame. The strength of the grid is increased and the deformation of the grid during use can be reduced. When the lead paste is attached to the edge of the grid, the contact area between the lead paste and the grid is increased, the contact surface is closer, the lead paste and the grid are more closely combined, the internal resistance of the grid is reduced, and the battery life is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the reinforced punched mesh grid of the utility model.

[0016] Figure 2 for Figure 1 A is a partial enlarged view.

[0017] Figure numerals: upper frame rib 1, lower frame rib 2, vertical frame rib 3, pole ear 4, horizontal rib 5, vertical rib 6, pressing edge 7. DETAILED DESCRIPTION

[0018] like Figure 1 and 2 As shown, a reinforced punching grid includes a frame surrounded by an upper frame rib 1, a lower frame rib 2 and two vertical frame ribs 3 on both sides. A pole ear 4 is provided on the upper frame rib 1, and a crisscrossing horizontal rib 5 and vertical rib 6 are provided in the frame. The grid in the present application is manufactured by a punching process, and the grid manufactured by the punching process has high strength and is simple to manufacture. The pole ears, horizontal ribs and vertical ribs in the grid of the present application can use conventionally designed structures in the prior art.

[0019] In the frame of the reinforced punched mesh grid of the present application, parts of the two vertical frame ribs 3 on both sides are punched toward the same side to form a pressed edge 7 protruding from the plane where the frame is located.

[0020] Since the inner side of the vertical frame rib 3 is connected to the transverse rib 5, it is preferred that the edge pressing 7 is formed by punching the outer part of the vertical frame rib 3, so as not to affect the connection with the transverse rib 5. Of course, if the edge pressing is formed by punching the middle part of the width direction of the vertical frame rib, it is equivalent to forming a slender strip-shaped groove, which can also achieve the purpose, but in this way, the width of the edge pressing may only be designed to be smaller, otherwise the remaining part of the vertical frame rib that is not punched to form the edge pressing will be thinner, which will affect the strength. Therefore, the optimal design method is the structure shown in 1 and 2, and the edge pressing 7 is formed by punching the outer part of the vertical frame rib 3.

[0021] The width of the edge 7 should not be too small or too large. If the width of the edge 7 is too small, the strength of the edge 7 itself may be insufficient; and if the width of the edge 7 is too large, the width of the remaining part of the vertical frame rib 3 that does not form the edge 7 will inevitably be too small and the strength will be insufficient. Therefore, it is preferred that the width of the edge 7 is 50% to 70% of the width of the vertical frame rib 3.

[0022] The edge pressing 7 is a continuous section or at least two sections distributed in a segmented manner in the length direction. That is to say, the edge pressing 7 can be a non-segmented design or a segmented design in the length direction. For the segmented design, it can generally be divided into 2 to 4 sections. The length requirement of the edge pressing 7 is relatively low. Of course, if the length is too low, the effect of the edge pressing 7 may be relatively small. Therefore, it is preferred that the total length of the edge pressing 7 located on the same vertical frame rib 3 is 50% to 95% of the length of the vertical frame rib 3.

[0023] The height of the edge pressing 7 protruding from the plane where the frame is located is 0.5 to 1.5 times the thickness of the vertical frame rib 3 .

[0024] The reinforced punched mesh grid of the utility model is formed by punching part of the vertical frame ribs in the frame to the same side to form a pressing edge protruding from the plane where the frame is located. The punched mesh grid frame and the plane of the grid body are not on the same plane after the pressing edge, which is equivalent to a reinforcing rib on the frame. The strength of the grid is increased and the deformation of the grid during use can be reduced. When the lead paste is attached to the edge of the grid, the contact area between the lead paste and the grid is increased, the contact surface is closer, the lead paste and the grid are more closely combined, the internal resistance of the grid is reduced, and the battery life is improved.

Claims

1. A reinforced punched mesh grid, comprising a frame formed by an upper frame rib, a lower frame rib and two vertical frame ribs on both sides, characterized in that: Parts of the two vertical frame ribs on both sides are punched toward the same side to form pressed edges protruding from the plane where the frame is located.

2. The reinforced punched mesh grid according to claim 1, characterized in that: The edge pressing is formed by punching the outer side portion of the vertical frame rib.

3. The reinforced punched mesh grid according to claim 1, characterized in that: The width of the edge pressing is 50% to 70% of the width of the vertical frame ribs.

4. The reinforced punched mesh grid according to claim 1, characterized in that: The pressing edge is a continuous section or at least two sections distributed in sections in the length direction.

5. The reinforced punched mesh grid according to claim 4, characterized in that: The total length of the edge pressing on the same vertical frame rib is 50% to 95% of the length of the vertical frame rib.

6. The reinforced punched mesh grid according to claim 1, characterized in that: The height of the edge pressing protruding from the plane where the frame is located is 0.5 to 1.5 times the thickness of the vertical frame ribs.

7. The reinforced punched mesh grid according to claim 1, characterized in that: The upper frame ribs are provided with pole ears, and the frame is provided with crisscrossing horizontal ribs and vertical ribs.

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