Battery electrode grid, battery electrode and battery

Abstract

The utility model relates to a storage battery electrode grid, a storage battery electrode and a storage battery. The storage battery electrode grid comprises a grid conductor, the grid conductor comprises a conductive tab, a bus bar and a plurality of conductive ribs, the conductive tab and the plurality of conductive ribs are respectively located at two sides of the bus bar, and the extension direction of the bus bar is vertical to the extension direction of the conductive ribs; the plastic supporting grid comprises an opening frame and a plurality of supporting ribs, the two ends of each supporting rib are fixed to the inner side of the opening frame, and each supporting rib is provided with a plurality of first mounting grooves for the conductive ribs to penetrate through. According to the technical scheme, the storage battery electrode grid is simple in structure, the grid electric conductor and the plastic supporting grid are spliced to achieve the function of the grid, the grid electric conductor plays a role in transmitting current, and the plastic supporting grid plays a role in supporting a framework. And the plastic supporting grid is light in weight, so that the total weight of the grid can be reduced, the purpose of reducing the lead consumption is achieved, and finally the cost of the storage battery is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of storage batteries, in particular to a storage battery electrode grid, a storage battery electrode and a storage battery. Background Art

[0002] Lead-acid batteries are widely used due to their low cost, mature technology, stable quality, high reliability, good applicability, and recycling rate of more than 95%. With the increasingly fierce market competition, quality improvement and cost reduction are the basis for the survival and development of manufacturing enterprises. Lead-acid batteries are mainly composed of positive plates, negative plates, separators and electrolytes. The positive plates and negative plates are composed of active materials and grids. The grids have two important functions: on the one hand, they serve as the "skeleton" of the positive and negative active materials, playing a mechanical support role; on the other hand, they serve as the "blood system" of the plates, playing the role of outputting / outputting current to various parts of the plates. Usually, the grid accounts for 40% to 50% of the total weight of the plate, which leads to the heavy weight of the traditional grids and high raw material costs, which is not conducive to widespread application. Utility Model Content

[0003] Based on this, it is necessary to provide a battery electrode grid, a battery electrode and a battery with a simple structure in order to reduce the weight of the grid.

[0004] A battery electrode grid, the battery electrode grid comprising:

[0005] A grid conductor, comprising a conductor lug, a bus rib and a plurality of conductive ribs, wherein the conductor lug and the plurality of conductive ribs are respectively located on both sides of the bus rib, and an extension direction of the bus rib is perpendicular to an extension direction of the conductive rib; and

[0006] The plastic support grid comprises an opening frame and a plurality of support ribs, wherein two ends of the support ribs are fixed to the inner side of the opening frame, and the support ribs have a plurality of first installation grooves for the conductive ribs to pass through.

[0007] The battery electrode grid structure of the utility model is simple. The grid conductor and the plastic support grid are spliced ​​to realize the function of the grid, wherein the grid conductor plays the role of transmitting current, and the plastic support grid plays the role of supporting the frame. Since the plastic support grid is light in weight, the total weight of the grid can be reduced, and the purpose of reducing lead consumption can be achieved at the same time, and finally the cost of the battery can be reduced, which is conducive to wide application.

[0008] In a feasible implementation, the opening frame includes a first sub-frame, a second sub-frame and a third sub-frame which are connected end to end in sequence, the extension direction of the first sub-frame and the third sub-frame are perpendicular to the extension direction of the second sub-frame, and the second sub-frame has a second mounting groove for fixing the conductive rib on the side facing the grid conductor.

[0009] In a feasible implementation, along a direction perpendicular to the extension direction of the second sub-frame, the distances between two adjacent supporting ribs are equal.

[0010] In a feasible implementation, the sizes of the first mounting groove and the second mounting groove are both adapted to the sizes of the conductive ribs.

[0011] In a feasible implementation, the melting point of the plastic support grid is greater than or equal to 200° C.; or

[0012] The plastic support grid is a polyphenylene sulfide support grid, a liquid crystal polymer support grid or a nylon support grid.

[0013] In a feasible implementation, along a direction parallel to the extension direction of the bus ribs, the distance between two adjacent conductive ribs is equal.

[0014] In a feasible implementation, the conductive electrode ear, the bus rib and the plurality of conductive ribs are integrally formed; or

[0015] The opening frame and the plurality of supporting ribs are integrally formed.

[0016] A battery electrode comprises any one of the above battery electrode grids.

[0017] The battery electrode of the utility model technical solution includes the battery electrode grid, which has a simple structure. The grid conductor and the plastic support grid are spliced ​​to realize the function of the grid, wherein the grid conductor plays the role of transmitting current, and the plastic support grid plays the role of supporting the skeleton. Since the plastic support grid is light in weight, the total weight of the grid can be reduced, and the purpose of reducing lead consumption can be achieved at the same time, and finally the cost of the battery can be reduced, which is conducive to wide application.

[0018] In a feasible implementation, the battery electrode is a positive electrode or a negative electrode.

[0019] A storage battery comprises the above-mentioned storage battery electrode.

[0020] The battery of the utility model technical solution includes the battery electrode, the battery electrode grid structure of the battery electrode is simple, the grid conductor and the plastic support grid are spliced ​​to realize the function of the grid, wherein the grid conductor plays the role of transmitting current, and the plastic support grid plays the role of supporting the frame. Since the plastic support grid is light in weight, the total weight of the grid can be reduced, and the purpose of reducing lead consumption is achieved at the same time, and finally the cost of the battery is reduced, which is conducive to wide application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of a battery electrode grid according to an embodiment of the utility model;

[0022] Figure 2 A schematic diagram of a grid conductor according to an embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of a plastic support grid according to an embodiment of the present utility model;

[0024] Figure 4 This is a schematic diagram of a plastic support grid precursor with process hanging ears according to an embodiment of the utility model;

[0025] Figure 5 It is a schematic diagram of a battery electrode grid with process hanging ears according to one embodiment of the utility model. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0029] See also Figure 1 to Figure 3 A battery electrode grid 100 according to an embodiment of the present invention includes a grid conductor 110 and a plastic support grid 120 .

[0030] The grid conductor 110 includes a conductive electrode ear 111, a bus rib 112 and a plurality of conductive ribs 113. The conductive electrode ear 111 and the plurality of conductive ribs 113 are respectively located on both sides of the bus rib 112, and the extension direction of the bus rib 112 is perpendicular to the extension direction of the conductive rib 113. The grid conductor 110 plays the role of transmitting current. The current is transmitted along the plurality of conductive ribs 113 and collected at the bus rib 112, and then led out through the conductive electrode ear 111 to generate a loop. The number of conductive ribs 113 is not limited.

[0031] The plastic support grid 120 includes an opening frame 121 and a plurality of support ribs 122. The two ends of the support ribs 122 are fixed to the inner side of the opening frame 121. The support ribs 122 have a plurality of first mounting grooves 123 for the conductive ribs 113 to pass through. The plastic support grid 120 is made of plastic and plays a supporting role as a skeleton. The opening end of the opening frame 121 faces the grid conductor 110. The number of the support ribs 122 is not limited.

[0032] The battery electrode grid 100 of this embodiment has a simple structure. The plurality of conductive ribs 113 of the grid conductor 110 respectively pass through the plurality of first mounting grooves 123 on the support ribs 122 to achieve the splicing of the grid conductor 110 and the plastic support grid 120. After the two are spliced, the function of the grid is realized as a whole. Since the plastic support grid is light in weight, the total weight of the grid can be reduced, and the purpose of reducing lead consumption is achieved at the same time, and finally the cost of the battery is reduced, which is conducive to wide application.

[0033] Based on the aforementioned embodiment, the opening frame 121 includes a first sub-frame 124, a second sub-frame 125 and a third sub-frame 126 which are connected end to end in sequence, and the extension direction of the first sub-frame 124 and the third sub-frame 126 are perpendicular to the extension direction of the second sub-frame 125. The second sub-frame 125 has a second mounting groove 127 for fixing the conductive rib 113 on the side facing the grid conductor 110.

[0034] The opening frame 121 of this embodiment is U-shaped as a whole, and the first sub-frame 124, the second sub-frame 125 and the third sub-frame 126 connected end to end in sequence form the three sides of the U. One end of the support rib 122 is fixed to the inner side of the first sub-frame 124, and the other end of the support rib 122 is fixed to the inner side of the third sub-frame 126, and the extension direction of the support rib 122 is the same as the extension direction of the second sub-frame 125. Further, the conductive rib 113 is inserted into the second mounting groove 127, so that the conductive rib 113 can be fixed.

[0035] On the basis of the above-mentioned implementation, the distance between two adjacent support ribs 122 is equal along the direction perpendicular to the extension direction of the second sub-frame 125. The support ribs 122 in this implementation are evenly distributed, which is conducive to achieving a better support effect.

[0036] On the basis of the above-mentioned embodiment, the sizes of the first mounting groove 123 and the second mounting groove 127 are both adapted to the sizes of the conductive rib 113. Among them, the size of the first mounting groove 123 is adapted to the size of the contact position of the accommodated conductive rib 113, and the size of the second mounting groove 127 is adapted to the end size of the conductive rib 113, which is conducive to the effective fixation of the conductive rib 113. It should be noted that in the battery electrode grid of the utility model, along the extension direction of the conductive rib 113, the radial size of the conductive rib 113 is not limited, for example, it can be the same along the extension direction of the conductive rib 113, or different along the extension direction of the conductive rib 113. When the radial size of the conductive rib 113 changes along the extension direction of the conductive rib 113, it can gradually increase or decrease. At this time, the size of the first mounting groove 123 and the second mounting groove 127 changes with the size of the conductive rib 113 to achieve adaptation with the conductive rib 113 and better fix the conductive rib 113.

[0037] On the basis of the above-mentioned embodiment, the melting point of the plastic support grid 120 is greater than or equal to 200°C. At this time, the melting point of the plastic support grid 120 is relatively high, which can avoid the influence of temperature during the manufacturing process of the battery electrode and play a better supporting role. Further, the melting point of the plastic support grid 120 can be, but is not limited to, 200°C, 210°C, 220°C, 230°C, 240°C, 250°C, 260°C, 270°C, 280°C, 290°C, 300°C, 350°C, 400°C or 450°C, etc.

[0038] On the basis of the above-mentioned embodiments, the plastic support grid 120 is a polyphenylene sulfide (PPS) support grid, a liquid crystal polymer (LCP) support grid or a nylon support grid. In other words, the material of the plastic support grid 120 is polyphenylene sulfide, liquid crystal or nylon. The plastic support grid 120 of these materials is resistant to high temperatures and can avoid the influence of temperature during the manufacturing process of the battery electrode. It should be noted that the plastic support grid 120 of the utility model is not limited to this, and can also be other high-temperature resistant plastic support grids with a supporting function.

[0039] On the basis of the above-mentioned embodiment, the distance between two adjacent conductive ribs 113 is equal in the direction parallel to the extension direction of the bus rib 112. The conductive ribs 113 play the role of conducting current and supporting active substances. The equal distance between two adjacent conductive ribs 113 makes the conductive ribs 113 evenly distributed, which is not only conducive to uniform current distribution, but also plays a uniform supporting role for the active substances.

[0040] On the basis of the above-mentioned embodiment, the conductive electrode ear 111, the bus rib 112 and the plurality of conductive ribs 113 are integrally formed, which is convenient for manufacturing, for example, by casting or die-casting.

[0041] On the basis of the above-mentioned embodiment, the opening frame 121 and the plurality of supporting ribs 122 are integrally formed, which is convenient for manufacturing.

[0042] Please combine Figure 4 and Figure 5 The process of making the battery electrode grid of the utility model is as follows:

[0043] S10, firstly make the grid conductor 110 and the plastic support grid precursor 130 respectively, wherein the plastic support grid precursor 130 includes an opening frame 121 and a plurality of support ribs 122, the two ends of the support ribs 122 are fixed to the inner side of the opening frame 121, and the support ribs 122 have a plurality of first mounting grooves 123 for the conductive ribs 113 to pass through. Specifically, the opening frame 121 includes a first sub-frame 124, a second sub-frame 125 and a third sub-frame 126 connected end to end in sequence, the extension direction of the first sub-frame 124 and the third sub-frame 126 are both perpendicular to the extension direction of the second sub-frame 125, and the second sub-frame 125 has a second mounting groove 127 for fixing the conductive ribs 113 on the side facing the grid conductor 110. In addition, the plastic support grid precursor 130 also includes two process hanging ears 131, and the two process hanging ears 131 are respectively located on the outer side of the ends of the first sub-frame 124 and the third sub-frame 126 away from the second sub-frame 125. The process hanging ears 131 are used for hanging support during the drying process.

[0044] In step S10, the grid conductor 110 and the plastic support grid precursor 130 can be manufactured in an integrated manner, and the manufacturing order is not limited. That is, the grid conductor 110 can be manufactured first, and then the plastic support grid precursor 130; the plastic support grid precursor 130 can also be manufactured first, and then the grid conductor 110; the grid conductor 110 and the plastic support grid precursor 130 can also be manufactured at the same time.

[0045] S20, splicing the grid conductor 110 and the plastic support grid precursor 130 into one body to obtain a battery electrode grid with process hanging ears. Figure 5 shown.

[0046] S30, coating and curing are performed, and after curing, the process ears 131 of the plastic support grid precursor 130 are removed to obtain the battery electrode grid 100 of the above embodiment. The coating and curing can be performed by the coating and curing methods commonly used in the art.

[0047] The battery electrode grid structure of the utility model is simple. The grid conductor and the plastic support grid are spliced ​​to realize the function of the grid, wherein the grid conductor plays the role of transmitting current, and the plastic support grid plays the role of supporting the frame. Since the plastic support grid is light in weight, the total weight of the grid can be reduced, and the purpose of reducing lead consumption can be achieved at the same time, and finally the cost of the battery can be reduced, which is conducive to wide application.

[0048] A battery electrode according to one embodiment includes any of the above-mentioned battery electrode grids.

[0049] On the basis of the above-mentioned embodiment, the battery electrode is a positive electrode or a negative electrode. That is to say, the positive electrode or the negative electrode of the battery electrode can adopt any of the above-mentioned battery electrode grids.

[0050] The battery electrode of the utility model technical solution includes the battery electrode grid, which has a simple structure. The grid conductor and the plastic support grid are spliced ​​to realize the function of the grid, wherein the grid conductor plays the role of transmitting current, and the plastic support grid plays the role of supporting the skeleton. Since the plastic support grid is light in weight, the total weight of the grid can be reduced, and the purpose of reducing lead consumption can be achieved at the same time, and finally the cost of the battery can be reduced, which is conducive to wide application.

[0051] A storage battery according to one embodiment includes the above-mentioned storage battery electrode.

[0052] The battery of the utility model technical solution includes the battery electrode, the battery electrode grid structure of the battery electrode is simple, the grid conductor and the plastic support grid are spliced ​​to realize the function of the grid, wherein the grid conductor plays the role of transmitting current, and the plastic support grid plays the role of supporting the frame. Since the plastic support grid is light in weight, the total weight of the grid can be reduced, and the purpose of reducing lead consumption is achieved at the same time, and finally the cost of the battery is reduced, which is conducive to wide application.

[0053] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A battery electrode grid, characterized in that: The battery electrode grid comprises: A grid conductor, comprising a conductor lug, a bus rib and a plurality of conductive ribs, wherein the conductor lug and the plurality of conductive ribs are respectively located on both sides of the bus rib, and an extension direction of the bus rib is perpendicular to an extension direction of the conductive rib; and The plastic support grid comprises an opening frame and a plurality of support ribs, wherein two ends of the support ribs are fixed to the inner side of the opening frame, and the support ribs have a plurality of first installation grooves for the conductive ribs to pass through.

2. The battery electrode grid according to claim 1, characterized in that: The opening frame includes a first sub-frame, a second sub-frame and a third sub-frame which are connected end to end in sequence, the extension direction of the first sub-frame and the third sub-frame are perpendicular to the extension direction of the second sub-frame, and the second sub-frame has a second mounting groove for fixing the conductive rib on the side facing the grid conductor.

3. The battery electrode grid according to claim 2, characterized in that: Along a direction perpendicular to the extending direction of the second sub-frame, the distances between two adjacent supporting ribs are equal.

4. The battery electrode grid according to claim 2, characterized in that: The sizes of the first mounting groove and the second mounting groove are both adapted to the sizes of the conductive ribs.

5. The battery electrode grid according to claim 1, characterized in that: The melting point of the plastic support grid is greater than or equal to 200° C.; or The plastic support grid is a polyphenylene sulfide support grid, a liquid crystal polymer support grid or a nylon support grid.

6. The battery electrode grid according to claim 1, characterized in that: Along a direction parallel to the extending direction of the bus ribs, the distance between two adjacent conductive ribs is equal.

7. The battery electrode grid according to claim 1, characterized in that: The conductive electrode ear, the bus rib and the plurality of conductive ribs are integrally formed; or The opening frame and the plurality of supporting ribs are integrally formed.

8. A battery electrode, characterized in that: The invention comprises the battery electrode grid according to any one of claims 1 to 7.

9. The battery electrode according to claim 8, characterized in that The battery electrode is a positive electrode or a negative electrode.

10. A storage battery, characterized in that: Comprising the battery electrode as claimed in claim 8 or 9.

Images