Battery positive plate with button structure

Abstract

The battery positive plate comprises a positive plate body and a positive shell, an annular clamping seat is fixedly arranged at the top of the surface of the positive plate body, an annular clamping groove is formed in the middle of the bottom end of the annular clamping seat, an annular clamping block is arranged in the annular clamping groove in a clamped mode, and the bottom end of the annular clamping block is fixedly connected with the positive shell. According to the battery positive plate with the button type structure, the plurality of connecting clamping blocks are respectively matched with the plurality of connecting clamping grooves, so that the positive plate body can be preliminarily limited; the positive plate body can be further limited through the limiting clamping of the annular clamping groove and the annular clamping block and the limiting clamping of the plurality of limiting elastic sheets and the plurality of limiting grooves, so that the conductive bulge at the bottom of the positive plate body is in close contact with the positive shell, and good contact between the positive plate body and the positive shell is ensured; and the discharge performance of the battery is ensured.

Description

Technical Field

[0001] The utility model relates to the field of batteries, in particular to a battery positive electrode sheet with a button structure. Background Art

[0002] A positive electrode sheet usually refers to an electrode sheet with a high potential that contains active substances that undergo a reduction reaction during discharge. The positive electrode sheet is composed of a current collector and active substances, a binder, a conductive agent, etc. It contacts the positive electrode shell through the end face or a conductive protrusion in the battery. However, many existing batteries will expand due to heat during use, resulting in the positive electrode sheet being unable to maintain good contact with the positive electrode shell, thereby affecting the discharge performance of the battery.

[0003] In order to solve the above problems, a battery positive electrode sheet with a button structure is proposed. Utility Model Content

[0004] The utility model aims to provide a battery positive electrode sheet with a button structure to solve the problem in the above background technology that many existing batteries expand due to heat when in use, resulting in the positive electrode sheet being unable to maintain good contact with the positive electrode shell, thereby affecting the discharge performance of the battery.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a battery positive electrode sheet with a button structure, comprising a positive electrode sheet body and a positive electrode shell, an annular holder is fixedly arranged on the top of the surface of the positive electrode sheet body, an annular slot is provided in the middle of the bottom end of the annular holder, an annular block is provided inside the annular slot, the bottom end of the annular block is fixedly connected to the positive electrode shell, a plurality of limiting slots are provided at the connection between the annular block and the annular slot, a plurality of placement slots are provided at the connection between the annular slot and the annular block, and a plurality of limiting spring sheets are fixedly arranged inside the plurality of placement slots, a plurality of connection blocks are fixedly arranged on the outer side of the bottom end of the positive electrode sheet body, and a plurality of connection slots are provided at the top end of the positive electrode shell.

[0006] The positive electrode sheet body is initially limited by the cooperation of several connecting clamps with several connecting clamping slots respectively, and the positive electrode sheet body is further limited by the limiting engagement of the annular clamping slot with the annular clamping block and the limiting engagement of several limiting spring sheets with several limiting slots respectively, so that the conductive protrusion at the bottom of the positive electrode sheet body is in close contact with the positive electrode shell, thereby ensuring good contact between the positive electrode sheet body and the positive electrode shell, and further ensuring the discharge performance of the battery, and the positive electrode sheet body is pulled upward with a large force, so that the several limiting spring sheets are separated from the several limiting slots, thereby facilitating the disassembly and replacement of the positive electrode sheet body.

[0007] Preferably, a plurality of the connection card blocks are respectively engaged and connected with a plurality of connection card slots, and the initial positioning of the positive electrode sheet body is facilitated by the matching arrangement of the plurality of connection card blocks and the plurality of connection card slots.

[0008] Preferably, several of the limiting spring sheets are respectively engaged with several limiting grooves, and the positive electrode body is further limited by the limiting engagement of the annular groove with the annular clamping block and the limiting engagement of several limiting spring sheets with several limiting grooves.

[0009] Preferably, an annular sealing ring is fixedly arranged at the bottom of the inner side of the annular clamping block, and the annular sealing ring is arranged corresponding to the positive electrode sheet body, and a sealing effect can be achieved through the arrangement of the annular sealing ring.

[0010] Preferably, a current collecting net is fixedly provided in the middle of the bottom end of the positive electrode sheet body, and a plurality of evenly distributed conductive protrusions are fixedly provided at the bottom end of the current collecting net, and the plurality of conductive protrusions are arranged corresponding to the positive electrode shell. The arrangement of the plurality of conductive protrusions can ensure good contact between the positive electrode sheet body and the positive electrode shell, thereby ensuring the discharge performance of the battery.

[0011] Preferably, the positive electrode sheet body includes a current collector, a first active layer is provided at the top end and the bottom end of the current collector, and a second active layer is provided on the side of the two first active layers away from the current collector. By providing two active layers on the surface of the current collector, the overall energy density can be improved.

[0012] Preferably, the current collector is made of carbon-coated aluminum foil material.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The positive electrode sheet body is initially limited by the cooperation of several connecting clamps with several connecting clamping slots respectively, and the positive electrode sheet body is further limited by the limiting engagement of the annular clamping slot with the annular clamping block and the limiting engagement of several limiting spring sheets with several limiting slots respectively, so that the conductive protrusion at the bottom of the positive electrode sheet body is in close contact with the positive electrode shell, thereby ensuring good contact between the positive electrode sheet body and the positive electrode shell, and further ensuring the discharge performance of the battery, and the positive electrode sheet body is pulled upward with a large force, so that the several limiting spring sheets are separated from the several limiting slots, thereby facilitating the disassembly and replacement of the positive electrode sheet body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 It is a front cross-sectional view of the utility model;

[0017] Figure 3 It is an enlarged view of part A of the utility model;

[0018] Figure 4 It is a cross-sectional view of the positive electrode sheet body of the utility model.

[0019] In the figure: 1. positive electrode body; 101. current collector; 102. first active layer; 103. second active layer; 2. current collecting net; 3. conductive protrusion; 4. positive electrode shell; 5. annular holder; 6. annular slot; 7. annular block; 8. placement groove; 9. limiting spring; 10. limiting slot; 11. annular sealing ring; 12. connecting block; 13. connecting slot. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] See also Figure 1-4 The utility model provides a battery positive electrode sheet with a button structure, including a positive electrode sheet body 1 and a positive electrode shell 4, a ring-shaped card seat 5 is fixedly arranged on the top of the surface of the positive electrode sheet body 1, a ring-shaped card slot 6 is provided in the middle of the bottom end of the ring-shaped card seat 5, a ring-shaped card block 7 is provided in the inner part of the ring-shaped card slot 6, the bottom end of the ring-shaped card block 7 is fixedly connected with the positive electrode shell 4, a plurality of limiting grooves 10 are provided at the connection between the ring-shaped card block 7 and the ring-shaped card slot 6, a plurality of placement grooves 8 are provided at the connection between the ring-shaped card slot 6 and the ring-shaped card block 7, and a plurality of limiting spring sheets 9 are fixedly arranged inside the plurality of placement grooves 8, a plurality of connection card blocks 12 are fixedly arranged on the outer side of the bottom end of the positive electrode sheet body 1, and a plurality of connection card blocks 12 are provided on the top of the positive electrode shell 4. The connecting card slot 13 is convenient for preliminary limiting of the positive electrode body 1 by the cooperation of several connecting card blocks 12 and several connecting card slots 13 respectively. The positive electrode body 1 is convenient for further limiting through the limiting engagement of the annular card slot 6 and the annular card block 7 and the limiting engagement of several limiting spring pieces 9 and several limiting grooves 10 respectively, so that the conductive protrusion 3 at the bottom of the positive electrode body 1 is in close contact with the positive electrode shell 4, thereby ensuring good contact between the positive electrode body 1 and the positive electrode shell 4, and then ensuring the discharge performance of the battery. By using a large force to pull the positive electrode body 1 upward, the several limiting spring pieces 9 are separated from the several limiting grooves 10, so as to facilitate the disassembly and replacement of the positive electrode body 1.

[0022] A plurality of connection blocks 12 are respectively engaged with a plurality of connection slots 13, a plurality of limit springs 9 are respectively engaged with a plurality of limit slots 10, and an annular sealing ring 11 is fixedly disposed at the bottom of the inner side of the annular block 7, and the annular sealing ring 11 is disposed correspondingly to the positive electrode sheet body 1;

[0023] When in use, the positive electrode body 1 is initially limited by the cooperation of the plurality of connection blocks 12 and the plurality of connection slots 13, and the positive electrode body 1 is further limited by the limited engagement of the annular slot 6 and the annular block 7 and the limited engagement of the plurality of limiting spring sheets 9 and the plurality of limiting slots 10, and the annular sealing ring 11 can play a sealing role;

[0024] A current collecting net 2 is fixedly arranged in the middle of the bottom end of the positive electrode sheet body 1, and a plurality of evenly distributed conductive protrusions 3 are fixedly arranged at the bottom end of the current collecting net 2, and the plurality of conductive protrusions 3 are arranged corresponding to the positive electrode shell 4. The positive electrode sheet body 1 includes a current collector 101, and a first active layer 102 is arranged at the top end and the bottom end of the current collector 101, and a second active layer 103 is arranged on the side of the two first active layers 102 away from the current collector 101, and the current collector 101 is made of carbon-coated aluminum foil material;

[0025] When in use, the arrangement of several conductive protrusions 3 can ensure good contact between the positive electrode sheet body 1 and the positive electrode shell 4, thereby ensuring the discharge performance of the battery. By arranging two active layers on the surface of the current collector 101, the overall energy density can be improved.

[0026] When the embodiment of the present application is in use: the positive electrode body 1 is initially limited by the cooperation of the plurality of connecting blocks 12 and the plurality of connecting slots 13, and the positive electrode body 1 is further limited by the limiting engagement of the annular slot 6 and the annular block 7 and the limiting engagement of the plurality of limiting spring sheets 9 and the plurality of limiting slots 10, so that the conductive protrusion 3 at the bottom of the positive electrode body 1 is in close contact with the positive electrode shell 4, thereby ensuring good contact between the positive electrode body 1 and the positive electrode shell 4, thereby ensuring the discharge performance of the battery, and when the positive electrode body 1 needs to be replaced, the positive electrode body 1 is pulled upward by using a large force, so that the plurality of limiting spring sheets 9 are separated from the plurality of limiting slots 10, thereby facilitating the disassembly and replacement of the positive electrode body 1.

[0027] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A battery positive electrode sheet with a button structure, comprising a positive electrode sheet body (1) and a positive electrode shell (4), characterized in that: An annular clamping seat (5) is fixedly arranged on the top of the surface of the positive electrode sheet body (1), an annular clamping groove (6) is provided in the middle of the bottom end of the annular clamping seat (5), an annular clamping block (7) is provided in engagement with the inside of the annular clamping groove (6), the bottom end of the annular clamping block (7) is fixedly connected to the positive electrode shell (4), a plurality of limiting grooves (10) are provided at the connection between the annular clamping block (7) and the annular clamping groove (6), a plurality of placement grooves (8) are provided at the connection between the annular clamping groove (6) and the annular clamping block (7), and a plurality of limiting spring sheets (9) are fixedly arranged inside the plurality of placement grooves (8), a plurality of connection clamping blocks (12) are fixedly arranged on the outside of the bottom end of the positive electrode sheet body (1), and a plurality of connection clamping grooves (13) are provided at the top end of the positive electrode shell (4).

2. The battery positive electrode sheet with a button structure according to claim 1, characterized in that: A plurality of the connection card blocks (12) are respectively engaged and connected with a plurality of the connection card slots (13).

3. The battery positive electrode sheet with a button structure according to claim 1, characterized in that: A plurality of the limiting spring pieces (9) are respectively engaged and connected with a plurality of the limiting grooves (10).

4. The battery positive electrode sheet with a button structure according to claim 1, characterized in that: An annular sealing ring (11) is fixedly arranged at the bottom of the inner side of the annular clamping block (7), and the annular sealing ring (11) is arranged corresponding to the positive electrode sheet body (1).

5. The battery positive electrode sheet with a button structure according to claim 1, characterized in that: A current collecting net (2) is fixedly arranged in the middle of the bottom end of the positive electrode sheet body (1), and a plurality of evenly distributed conductive protrusions (3) are fixedly arranged at the bottom end of the current collecting net (2), and the plurality of conductive protrusions (3) are all arranged corresponding to the positive electrode shell (4).

6. The battery positive electrode sheet with a button structure according to claim 1, characterized in that: The positive electrode sheet body (1) comprises a current collector (101), the top end of the current collector (101) and the bottom end of the current collector (101) are both provided with a first active layer (102), and the sides of the two first active layers (102) away from the current collector (101) are both provided with a second active layer (103).

7. The battery positive electrode sheet with a button structure according to claim 6, characterized in that: The current collector (101) is made of carbon-coated aluminum foil material.

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