Novel grid structure

Abstract

The utility model discloses a novel grid structure, which belongs to the technical field of batteries and comprises a grid main body, the grid main body comprises a round rib assembly, the round rib assembly comprises a first round rib, a second round rib and a third round rib, and the second round rib is arranged on the periphery of the first round rib; the third round rib is arranged on the periphery of the second round rib; the grid main body further comprises a first vertical rib and a second vertical rib; the first vertical rib is connected with the second round rib and the third round rib from the first round rib; and the second vertical rib is connected with the third round rib from the second round rib. According to the scheme, the grid main body with the circular structure is adopted, the grid is of the circular structure, and due to the equipotential surface effect, current flows through each position of the grid from a tab, so that the potential consistency is greatly improved, the utilization rate of active substances borne on the grid is more uniform, and the corrosion of the grid and the argillization of the active substances are delayed.

Description

Technical Field

[0001] The utility model relates to a lead-acid battery structure, more specifically, it relates to a novel grid structure. Background Art

[0002] The plates of power lead-acid batteries are composed of grids and active materials. The structural characteristics of existing grids are: the current density is small at locations far from the pole lugs, the utilization rate of active materials is low, and the utilization rate of active materials on the entire grid is poorly consistent. At locations with high current density, grid corrosion progresses faster, and at locations with low current density, the utilization rate of active materials is low, and active materials are more likely to become muddy, which ultimately causes premature battery failure.

[0003] For example: Chinese patent application number CN201721101647.9, application date August 30, 2017, utility model name is a lead-acid battery grid, a plate and a lead-acid battery, the application discloses a battery grid structure, including frame ribs and transverse ribs and vertical ribs crisscrossing inside the frame ribs, the frame ribs are connected to the pole ears, and the side of the frame ribs away from the pole ears is an arc-shaped protrusion outward. In this scheme, the utilization rate of active materials and corrosion resistance are moderate, which can improve the service life of the battery and meet the use requirements of the battery. However, in this scheme, since the pole ears are arranged on the side of the frame ribs, the current conducted by the pole ears will be more biased to one side, making the current density inconsistent, affecting the performance of the current. Utility Model Content

[0004] The utility model overcomes the problem of poor current density consistency of battery grid structure and provides a new grid structure. The scheme adopts a circular grid to form an equipotential surface effect in the circular grid. The current flows from the pole ear through various positions of the grid, which greatly improves the potential consistency and the current density consistency.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a new type of grid structure, including a grid body, the grid body includes a round rib assembly, the round rib assembly includes a first round rib, a second round rib and a third round rib, the second round rib is arranged outside the first round rib; the third round rib is arranged outside the second round rib; the grid body also includes a first vertical rib and a second vertical rib, the first vertical rib connects the second round rib and the third round rib from the first round rib; the second vertical rib connects the third round rib from the second round rib. This solution adopts a grid body with a circular structure. The grid has a circular structure. Due to the equipotential surface effect, the current flows from the pole ear through each position of the grid, which greatly improves its potential consistency, makes the utilization rate of the active material carried on the grid more uniform, and delays the corrosion of the grid and the mudification of the active material. Among them, the first vertical rib directly connects the first circular rib, the second circular rib and the third circular rib, and the second vertical rib connects the third circular rib starting from the second circular rib. When the current flows from the first circular rib to the second circular rib, it will further flow to the second vertical rib, so that the current density on the second circular rib will not be too high, reducing the current density difference with other positions, thereby improving the current density consistency and increasing the service life of the grid.

[0006] Preferably, the third round rib is arranged concentrically with the first round rib and the second round rib. All round ribs in the round rib assembly are arranged concentrically, which improves the stability and uniformity of the structure and can also improve the consistency of current density to a certain extent.

[0007] Preferably, a pole ear is arranged on one side of the first circular rib close to the center of the circle. The pole ear is arranged on the inner side of the first circular rib, so that the pole ear is closer to the center of the grid. The grid is a circular structure. Due to the equipotential surface effect, the current flows from the pole ear through each position of the grid, greatly improving its potential consistency. The pole ear is perpendicular to the first circular rib, connecting the electric energy conversion of the active material and the load, so that the grid and the load can flow current, and the length is moderate, which is convenient for welding the current collector.

[0008] Preferably, the position of the pole lug corresponds to the position of the second vertical rib. The position of the pole lug needs to be staggered with the position of the first vertical rib, so that the current can reach each first vertical rib at the same time, improving the current consistency of each position of the grid structure.

[0009] Preferably, a notch is provided on one side of the first rib near the center of the circle, and the notch is symmetrical with the position of the tab about the grid body. The notch is provided on the opposite side of the tab so that the tab will not short-circuit with the innermost rib of the opposite polar plate.

[0010] Preferably, the first vertical ribs are symmetrically arranged on the grid body. The symmetrical arrangement of the first vertical ribs on the grid can improve the consistency of the current on the grid body.

[0011] Preferably, the second vertical ribs are symmetrically arranged on the grid body. The symmetrical arrangement of the second vertical ribs on the grid can also improve the consistency of the current on the grid body.

[0012] Preferably, the radial distance from the first round rib to the second round rib is smaller than the distance from the second round rib to the third round rib adjacent to the second round rib. Since the tab of the first round rib will be connected to the external current collector, the vertical ribs (first vertical rib and second vertical rib) on the second round rib need to strengthen the first round rib, so the distance from the second round rib to the first round rib should be closer.

[0013] Preferably, the number of the third round ribs is at least two layers. The number of the third round ribs can be designed according to actual needs, and generally a multi-layer structure is used.

[0014] Compared with the prior art, the beneficial effects of the utility model are: (1) the new grid structure can improve the consistency of the electric potential of the current at various positions of the grid structure, making the utilization rate of the active material carried on the grid more uniform, delaying grid corrosion and active material mudification; (2) the overall utilization rate of the grid is improved, the material consumption is reduced, and the service life is longer; (3) the structure is simple, easy to produce and process, and the production cost is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the front view of the utility model.

[0016] Figure 2 It is an axonometric drawing of the present utility model.

[0017] In the figure: 1. grid body, 2. first circular rib, 3. second circular rib, 4. third circular rib, 5. first vertical rib, 6. second vertical rib, 7. pole ear, 8. notch. DETAILED DESCRIPTION

[0018] The technical solution of the utility model is further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0019] Example 1: A new type of grid structure, such as Figure 1 and Figure 2As shown, it includes a grid body 1, which is cross-connected by a round rib assembly and a plurality of vertical ribs, the round rib assembly includes a first round rib 2 located at the innermost side, a second round rib 3 located at the outer circle of the first round rib 2, and a third round rib 4 located at the outer circle of the second round rib 3, wherein the first round rib 2, the second round rib 3 and the third round rib 4 are concentric ring structures; the vertical ribs on the grid body 1 include a first vertical rib 5 and a second vertical rib 6, the overall length of the first vertical rib 5 is greater than the length of the second vertical rib 6, and the first vertical rib 5 simultaneously connects the first round rib 2, the second round rib 3 and the third round rib 4, while the second vertical rib 6 only connects the second round rib 3 and the third round rib 4. This scheme adopts a circular grid body 1, and the grid is circular in structure. Due to the equipotential surface effect, the current flows from the pole ear 7 through various positions of the grid body 1, which greatly improves its potential consistency, makes the utilization rate of the active material carried on the grid body 1 more uniform, and delays the corrosion of the grid body 1 and the mudification of the active material. Since the second vertical rib 6 is connected from the second circular rib 3, when the current flows from the first circular rib 2 to the second circular rib 3, it will further flow to the second vertical rib 6, so that the current density on the second circular rib 3 will not be too high, reducing the current density difference with other positions, thereby improving the consistency of current density and increasing the service life of the grid. In addition, the third circular rib 4 on the periphery also plays a role in strengthening the structure of the entire grid body 1.

[0020] In this embodiment, the radius of the first circular rib 2 is 10 mm, and the rib width of the first circular rib 2 is greater than the width of the remaining circular ribs. Specifically, the rib width of the first circular rib 2 is 4 mm, while the rib widths of the second circular rib 3 and the third circular rib 4 are 3 mm; the interval between the second circular rib 3 and the first circular rib 2 is 6 mm, and the interval between the second circular rib 3 and the third circular rib 4 is 7 mm; since the first circular rib 2 needs to be connected to the pole ear 7, and the pole ear 7 is connected to the external current collector, the second vertical rib 6 on the second circular rib 3 needs to provide a certain degree of structural reinforcement for the first circular rib 2, so the second circular rib 3 is slightly closer to the first circular rib 2; and the distance between the third circular rib 4 and the second circular rib 3 can be specifically designed according to the actual size of the battery frame to adapt to the frame size.

[0021] The width of each circular rib on the circular rib assembly is greater than the width of the first vertical rib 5 and the second vertical rib 6. Specifically, the width of the first vertical rib 5 and the second vertical rib 6 is 0.8 to 1.0 mm. In this embodiment, the width of the first vertical rib 5 and the second vertical rib 6 is 1 mm. The vertical ribs are mainly used to conduct current. In the circular rib assembly, the first circular rib 2 and the second circular rib 3 not only play a structural supporting role for the entire grid body 1, but also play a certain role in conducting current. The third circular rib 4 structure mainly plays a structural supporting role for the entire grid body 1, and generally does not conduct current, because on the third circular rib 4, each position on the circular rib is in an equipotential state, and current is not transmitted.

[0022] A pole ear 7 is also provided on the first circular rib 2. The pole ear 7 is provided on one side of the circular position of the first circular rib 2, and the thickness of the pole ear 7 is the same as that of the grid body 1, both of which are 1.5 mm. On the one hand, the overall strength of the pole ear 7 structure is improved, and on the other hand, it is convenient for the active material to be filled on the surface of the grid body 1. The pole ear 7 is located in the radial direction of the first circular rib 2 and is perpendicular to the first circular rib 2. The pole ear 7 connects the active material and the load for electrical energy conversion, so that the grid body 1 and the load can flow current, and the pole ear 7 is of moderate length, which is convenient for welding the current collector.

[0023] The connection position between the pole ear 7 and the first circular rib 2 is staggered with the position of the first vertical rib 5 and corresponds to the second vertical rib 6 in the radial direction, so that the current can reach each first vertical rib 5 at the same time, improving the current consistency at each position of the grid structure.

[0024] Example 2: A new type of grid structure, such as Figure 1 and Figure 2 As shown, it includes a grid body 1, which is cross-connected by a circular rib assembly and a plurality of vertical ribs, the circular rib assembly includes a first circular rib 2 located at the innermost side, a second circular rib 3 located at the outer circle of the first circular rib 2, and a third circular rib 4 located at the outer circle of the second circular rib 3, wherein the first circular rib 2, the second circular rib 3 and the third circular rib 4 are a concentric ring structure; the vertical ribs on the grid body 1 include a first vertical rib 5 and a second vertical rib 6, the overall length of the first vertical rib 5 is greater than the length of the second vertical rib 6, and the first vertical rib 5 connects the first circular rib 2, the second circular rib 3 and the third circular rib 4 at the same time, while the second vertical rib 6 only connects the second circular rib 3 and the third circular rib 4.

[0025] There are eight first vertical ribs 5 and two second vertical ribs 6, the two second vertical ribs 6 are located in the diameter direction of the grid body 1 and are symmetrically arranged about the center of the grid body 1, while the eight first vertical ribs 5 are symmetrically distributed about the straight line formed by the two second vertical ribs 6, four first vertical ribs 5 are distributed on both sides of the second vertical rib 6, and the first vertical ribs 5 are evenly distributed on the grid body 1. The first vertical ribs 5 and the second vertical ribs 6 are symmetrically distributed on the grid body 1, which can also improve the consistency of the current density on the grid body 1.

[0026] This solution adopts a circular grid body 1. The grid is circular in structure. Due to the equipotential surface effect, the current flows from the pole ear 7 through various positions of the grid body 1, which greatly improves the consistency of its potential, makes the utilization rate of the active material carried on the grid body 1 more uniform, and delays the corrosion of the grid body 1 and the mudification of the active material. Since the second vertical rib 6 is connected from the second circular rib 3, when the current flows from the first circular rib 2 to the second circular rib 3, it will further flow to the second vertical rib 6, so that the current density on the second circular rib 3 will not be too high, reducing the current density difference with other positions, thereby improving the consistency of the current density and increasing the service life of the grid. In addition, the third circular rib 4 on the periphery also plays a role in strengthening the structure of the entire grid body 1.

[0027] In this embodiment, the radius of the first circular rib 2 is 10 mm, and the rib width of the first circular rib 2 is greater than the width of the remaining circular ribs. Specifically, the rib width of the first circular rib 2 is 4 mm, while the rib widths of the second circular rib 3 and the third circular rib 4 are 3 mm; the interval between the second circular rib 3 and the first circular rib 2 is 6 mm, and the interval between the second circular rib 3 and the third circular rib 4 is 7 mm; since the first circular rib 2 needs to be connected to the pole ear 7, and the pole ear 7 is connected to the external current collector, the second vertical rib 6 on the second circular rib 3 needs to provide a certain degree of structural reinforcement for the first circular rib 2, so the second circular rib 3 is slightly closer to the first circular rib 2; and the distance between the third circular rib 4 and the second circular rib 3 can be specifically designed according to the actual size of the battery frame to adapt to the frame size.

[0028] The width of each circular rib on the circular rib assembly is greater than the width of the first vertical rib 5 and the second vertical rib 6. Specifically, the width of the first vertical rib 5 and the second vertical rib 6 is 0.8 to 1.0 mm. In this embodiment, the width of the first vertical rib 5 and the second vertical rib 6 is 1 mm. The vertical ribs are mainly used to conduct current. In the circular rib assembly, the first circular rib 2 and the second circular rib 3 not only play a structural supporting role for the entire grid body 1, but also play a certain role in conducting current. The third circular rib 4 structure mainly plays a structural supporting role for the entire grid body 1, and generally does not conduct current, because on the third circular rib 4, each position on the circular rib is in an equipotential state, and current is not transmitted.

[0029] A pole ear 7 is also provided on the first circular rib 2. The pole ear 7 is provided on one side of the circular position of the first circular rib 2, and the thickness of the pole ear 7 is the same as that of the grid body 1, both of which are 1.5 mm. On the one hand, the overall strength of the pole ear 7 structure is improved, and on the other hand, it is convenient for the active material to be filled on the surface of the grid body 1. The pole ear 7 is located in the radial direction of the first circular rib 2 and is perpendicular to the first circular rib 2. The pole ear 7 connects the active material and the load for electrical energy conversion, so that the grid body 1 and the load can flow current, and the pole ear 7 is of moderate length, which is convenient for welding the current collector.

[0030] The connection position between the pole ear 7 and the first circular rib 2 is staggered with the position of the first vertical rib 5 and corresponds to the second vertical rib 6 in the radial direction, so that the current can reach each first vertical rib 5 at the same time, improving the current consistency at each position of the grid structure.

[0031] In addition, a notch 8 is provided on the first circular rib 2. The notch 8 is provided on the side of the first circular rib 2 close to the center of the circle, and the position of the notch 8 is opposite to the position of the pole ear 7. The notch 8 is mainly used to avoid the structure of the pole ear 7 so that the pole ear 7 will not contact and short-circuit with the innermost circular rib of the opposite pole plate.

[0032] Example 3: A new type of grid structure, such as Figure 1 and Figure 2 As shown, it includes a grid body 1, which is cross-connected by a circular rib assembly and a plurality of vertical ribs, the circular rib assembly includes a first circular rib 2 located at the innermost side, a second circular rib 3 located at the outer circle of the first circular rib 2, and a third circular rib 4 located at the outer circle of the second circular rib 3, wherein the first circular rib 2, the second circular rib 3 and the third circular rib 4 are a concentric ring structure; the vertical ribs on the grid body 1 include a first vertical rib 5 and a second vertical rib 6, the overall length of the first vertical rib 5 is greater than the length of the second vertical rib 6, and the first vertical rib 5 connects the first circular rib 2, the second circular rib 3 and the third circular rib 4 at the same time, while the second vertical rib 6 only connects the second circular rib 3 and the third circular rib 4.

[0033] There are eight first vertical ribs 5 and two second vertical ribs 6, the two second vertical ribs 6 are located in the diameter direction of the grid body 1 and are symmetrically arranged about the center of the grid body 1, while the eight first vertical ribs 5 are symmetrically distributed about the straight line formed by the two second vertical ribs 6, four first vertical ribs 5 are distributed on both sides of the second vertical rib 6, and the first vertical ribs 5 are evenly distributed on the grid body 1. The first vertical ribs 5 and the second vertical ribs 6 are symmetrically distributed on the grid body 1, which can also improve the consistency of the current density on the grid body 1.

[0034] This solution adopts a circular grid body 1. The grid is circular in structure. Due to the equipotential surface effect, the current flows from the pole ear 7 through various positions of the grid body 1, which greatly improves the consistency of its potential, makes the utilization rate of the active material carried on the grid body 1 more uniform, and delays the corrosion of the grid body 1 and the mudification of the active material. Since the second vertical rib 6 is connected from the second circular rib 3, when the current flows from the first circular rib 2 to the second circular rib 3, it will further flow to the second vertical rib 6, so that the current density on the second circular rib 3 will not be too high, reducing the current density difference with other positions, thereby improving the consistency of the current density and increasing the service life of the grid. In addition, the third circular rib 4 on the periphery also plays a role in strengthening the structure of the entire grid body 1.

[0035] In this embodiment, the radius of the first circular rib 2 is 10 mm, and the rib width of the first circular rib 2 is greater than the width of the remaining circular ribs. Specifically, the rib width of the first circular rib 2 is 4 mm, while the rib widths of the second circular rib 3 and the third circular rib 4 are 3 mm; the interval between the second circular rib 3 and the first circular rib 2 is 6 mm, and the interval between the second circular rib 3 and the third circular rib 4 is 7 mm; since the first circular rib 2 needs to be connected to the pole ear 7, and the pole ear 7 is connected to the external current collector, the second vertical rib 6 on the second circular rib 3 needs to provide a certain degree of structural reinforcement for the first circular rib 2, so the second circular rib 3 is slightly closer to the first circular rib 2; and the distance between the third circular rib 4 and the second circular rib 3 can be specifically designed according to the actual size of the battery frame to adapt to the frame size.

[0036] It should also be noted that, in this embodiment, the number of the third round rib 4 is not limited to only one. Figure 1 and Figure 2 As shown, the number of the third circular ribs 4 is two. In actual production needs, the number of the third circular ribs 4 needs to be specifically designed according to the size of the frame accommodating the grid body 1. The distance between the third circular ribs 4 is slightly larger than the distance between the first circular ribs 2 and the second circular ribs 3. It mainly provides structural support for the grid body 1, and the outermost third circular ribs 4 are used to adapt to the size of the frame.

[0037] The width of each circular rib on the circular rib assembly is greater than the width of the first vertical rib 5 and the second vertical rib 6. Specifically, the width of the first vertical rib 5 and the second vertical rib 6 is 0.8 to 1.0 mm. In this embodiment, the width of the first vertical rib 5 and the second vertical rib 6 is 1 mm. The vertical ribs are mainly used to conduct current. In the circular rib assembly, the first circular rib 2 and the second circular rib 3 not only play a structural supporting role for the entire grid body 1, but also play a certain role in conducting current. The third circular rib 4 structure mainly plays a structural supporting role for the entire grid body 1, and generally does not conduct current, because on the third circular rib 4, each position on the circular rib is in an equipotential state, and current is not transmitted.

[0038] A pole ear 7 is also provided on the first circular rib 2. The pole ear 7 is provided on one side of the circular position of the first circular rib 2, and the thickness of the pole ear 7 is the same as that of the grid body 1, both of which are 1.5 mm. On the one hand, the overall strength of the pole ear 7 structure is improved, and on the other hand, it is convenient for the active material to be filled on the surface of the grid body 1. The pole ear 7 is located in the radial direction of the first circular rib 2 and is perpendicular to the first circular rib 2. The pole ear 7 connects the active material and the load for electrical energy conversion, so that the grid body 1 and the load can flow current, and the pole ear 7 is of moderate length, which is convenient for welding the current collector.

[0039] The connection position between the pole ear 7 and the first circular rib 2 is staggered with the position of the first vertical rib 5 and corresponds to the second vertical rib 6 in the radial direction, so that the current can reach each first vertical rib 5 at the same time, improving the current consistency at each position of the grid structure.

[0040] In addition, a notch 8 is provided on the first circular rib 2. The notch 8 is provided on the side of the first circular rib 2 close to the center of the circle, and the position of the notch 8 is opposite to the position of the pole ear 7. The notch 8 is mainly used to avoid the structure of the pole ear 7 so that the pole ear 7 will not contact and short-circuit with the innermost circular rib of the opposite pole plate.

Claims

1. A new type of grid structure, characterized in that: It includes a grid body, the grid body includes a round rib assembly, the round rib assembly includes The first round rib, The second round rib is arranged outside the first round rib; The third circular rib is arranged outside the second circular rib; The grid body also includes The first vertical reinforcement starts from the first circular reinforcement and connects the second circular reinforcement and the third circular reinforcement; The second vertical reinforcement starts from the second circular reinforcement and connects to the third circular reinforcement.

2. A new type of grid structure according to claim 1, characterized in that: The third circular rib is arranged concentrically with the first circular rib and the second circular rib.

3. A new type of grid structure according to claim 2, characterized in that: A pole ear is arranged on one side of the first circular rib close to the center of the circle.

4. A new type of grid structure according to claim 3, characterized in that: The position of the pole lug corresponds to the position of the second vertical rib.

5. A new type of grid structure according to claim 4, characterized in that: A notch is further provided on one side of the first circular rib close to the center of the circle, and the position of the notch is symmetrical with the position of the pole lug with respect to the grid body.

6. A new type of grid structure according to claim 5, characterized in that: The first vertical ribs are symmetrically arranged on the grid body.

7. A new type of grid structure according to claim 6, characterized in that: The second vertical ribs are symmetrically arranged on the grid body.

8. A novel grid structure according to any one of claims 1 to 7, characterized in that: The radial distance from the first circular rib to the second circular rib is smaller than the distance from the second circular rib to a third circular rib adjacent to the second circular rib.

9. A novel grid structure according to any one of claims 1 to 7, characterized in that: The number of the third round ribs is at least two.

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