High-stability zinc ion battery positive electrode sheet

Abstract

The utility model relates to zinc ion battery technical field, and disclose a kind of high stability zinc ion battery positive pole piece, including shell, the top of the shell is provided with cover, the inside of the shell is separated into several pole piece cavities by partition, the inside of the pole piece cavity is uniformly provided with several positive pole pieces, the side of the positive pole piece is evenly provided with negative pole piece, the opposite side of the positive pole piece and negative pole piece is fixedly connected with tab, the opposite angle of the cover is embedded with pole, the bottom of the pole is fixedly connected with conducting connection plate, the outside of the tab is provided with connecting mechanism, the sealing mechanism is provided in the cover close to pole, not only can be connected into pole piece module by the way of snaping fast the positive pole piece and negative pole piece, simplify the work flow of user assembly battery, also can be damaged while the local pole piece unit inside pole piece mould, it is convenient for user to replace damaged pole piece unit, improve practicality.

Description

Technical Field

[0001] This utility model relates to the field of zinc-ion battery technology, specifically to a high-stability zinc-ion battery positive electrode sheet. Background Technology

[0002] Zinc-ion batteries are secondary batteries that use zinc ions as charge carriers. They have core advantages such as high safety, low cost, and abundant resources. They use zinc anodes, metal oxide cathodes, and solid polymer electrolytes and are produced through screen printing technology. This overcomes the charging problem caused by dendrites in traditional zinc batteries. They are characterized by being ultra-thin, flexible, highly safe, and low in toxicity. They are mainly used in wearable devices and medical implants.

[0003] However, existing high-stability zinc-ion battery positive electrode plates are usually connected by welding to form electrode modules on the positive and negative electrodes. But when there is a partial failure in the module, users need to use a cutting machine to cut the welded joint to replace the damaged electrode unit. The replacement process is relatively complicated and not very practical. Utility Model Content

[0004] This invention provides a highly stable zinc-ion battery positive electrode sheet, which not only facilitates the assembly of the battery internal modules but also enables the rapid replacement of damaged electrode units when some electrode units are damaged, thus solving the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a high-stability zinc-ion battery positive electrode sheet, including a shell, a cover plate on the top of the shell, the interior of the shell being divided into several electrode cavities by a partition, several positive electrode sheets being uniformly arranged inside the electrode cavities, a negative electrode sheet being arranged on one side of each positive electrode sheet, and tabs being fixedly connected to the opposite sides of each positive and negative electrode sheet, a pole post being embedded diagonally on the cover plate, a conductive connecting plate being fixedly connected to the bottom end of each pole post, a connecting mechanism being arranged on the outside of the tabs, and a sealing mechanism being arranged on the cover plate near the pole post.

[0006] Preferably, the connecting mechanism includes a connecting sleeve fitted onto the outer surface of the electrode tab, the connecting sleeve being fixedly connected to the conductive connecting plate, elastic plates being provided on both sides of the connecting sleeve, the elastic plates being connected to the connecting sleeve through limiting members, and buckles being fixedly connected to the bottom of each elastic plate. The electrode tab is provided with a plurality of slots evenly distributed near the buckles, and pressing plates are provided on both sides of the connecting sleeve. Push rods are rotatably connected to both sides of the pressing plates, and the ends of the push rods away from the pressing plates are rotatably connected to the elastic plates.

[0007] Preferably, the limiting component includes two limiting rods slidably installed inside the elastic plate. One end of each limiting rod is fixedly connected to a limiting plate, and one end of the limiting plate is fixedly connected to the connecting sleeve. Two springs are provided between the connecting sleeve and the elastic plate, and the springs are respectively sleeved on the outer surface of the limiting rod.

[0008] Preferably, the sealing mechanism includes two sealing rings disposed on the outside of the pole post, the sealing rings being fixedly connected to the cover plate, and a fixing ring coupled to the bottom outer surface of each sealing ring, the two fixing rings being fixedly connected to the conductive connecting plate respectively.

[0009] Preferably, both sides of the positive electrode are coated with an electrode layer, and an isolation plate is provided between the electrode layer and the negative electrode. The isolation plate has through holes arranged in a matrix inside.

[0010] Preferably, each cover plate is threaded with a sealing cap near the electrode cavity, and a sealing ring is provided between the sealing cap and the cover plate. The sealing ring is respectively sleeved on the outside of the sealing cap, and a sealing gasket is provided between the cover plate and the housing.

[0011] This utility model has the following beneficial effects:

[0012] 1. Through the combined action of the shell, cover plate, electrode cavity, positive electrode, negative electrode, electrode tab, electrode post, conductive connecting plate and connecting mechanism, the positive and negative electrode can be quickly connected into an electrode module by snap-fit, simplifying the user's battery assembly process. It can also facilitate the replacement of damaged electrode units when local electrode units inside the electrode mold are damaged, thus improving practicality.

[0013] 2. Through the combined action of the shell, cover plate, electrode cavity, positive electrode, negative electrode, electrode tab, electrode post, conductive connection plate, connection mechanism and sealing mechanism, the overall sealing effect of the battery is improved, avoiding leakage at the connection points of battery parts when users frequently disassemble and assemble the battery. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the positive electrode structure of this utility model.

[0016] Figure 3 This is a schematic diagram of the connection mechanism of this utility model.

[0017] Figure 4 This is a schematic diagram of the sealing mechanism of this utility model.

[0018] Figure 5 For the present utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0019] Figure 6 This is a schematic diagram of the partition and shell structure of this utility model.

[0020] Figure 7 For the present utility model Figure 6 Enlarged structural diagram at point B.

[0021] In the diagram: 1. Shell; 2. Cover plate; 3. Electrode cavity; 4. Positive electrode; 5. Negative electrode; 6. Electrode tab; 7. Electrode post; 8. Conductive connecting plate; 9. Connecting mechanism; 91. Connecting sleeve; 92. Elastic plate; 93. Limiting component; 931. Limiting rod; 932. Limiting plate; 933. Spring; 94. Buckle; 95. Slot; 96. Pressing plate; 97. Push rod; 10. Sealing mechanism; 101. Sealing ring; 102. Fixing ring; 11. Electrode layer; 12. Isolation plate; 13. Through hole; 14. Sealing cover; 15. Sealing ring; 16. Sealing gasket. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1

[0024] This embodiment aims to facilitate the replacement of damaged electrode units by users. Please refer to [link / reference]. Figures 1-3 A high-stability zinc-ion battery positive electrode includes a housing 1, with a cover plate 2 on the top of the housing 1. The interior of the housing 1 is divided into several electrode cavities 3 by a partition. The electrode cavities 3 are used to store electrode modules and contain electrolyte. Several positive electrodes 4 are evenly arranged inside the electrode cavities 3. A negative electrode 5 is arranged on one side of each positive electrode 4. A tab 6 is fixedly connected to the opposite side of each positive electrode 4 and negative electrode 5. A pole post 7 is embedded diagonally on the cover plate 2. A conductive connecting plate 8 is fixedly connected to the bottom of each pole post 7. The conductive connecting plate 8 can connect the positive electrode 4 and the negative electrode 5 to form an electrode module. A connecting mechanism 9 is provided on the outside of the tab 6 to facilitate the replacement of damaged electrode units by the user. A sealing mechanism 10 is provided on the cover plate 2 near the pole post 7. The sealing mechanism 10 improves the overall sealing performance of the battery and prevents leakage.

[0025] The connecting mechanism 9 includes a connecting sleeve 91 sleeved on the outer surface of the tab 6. The connecting sleeve 91 is fixedly connected to the conductive connecting plate 8. The conductive connecting plate 8 and the connecting sleeve 91 can connect the positive electrode 4 and the negative electrode 5 into an electrode module through the tab 6. Both sides of the connecting sleeve 91 are provided with elastic plates 92. The elastic plates 92 are connected to the connecting sleeve 91 through limiting members 93. The limiting members 93 can apply a certain pushing force to the elastic plates 92. The bottom of the elastic plates 92 is fixedly connected with buckles 94. The tab 6 is provided with several slots 95 evenly distributed near the buckles 94, which can stably engage and fix the connecting sleeve 91 on the outside of the tab 6. Both sides of the connecting sleeve 91 are provided with pressing plates 96. Both sides of the pressing plates 96 are rotatably connected with push rods 97. The end of the push rod 97 away from the pressing plate 96 is rotatably connected to the elastic plate 92.

[0026] The limiting component 93 includes two limiting rods 931 that are slidably installed inside the elastic plate 92. One end of the limiting rod 931 is fixedly connected to the limiting plate 932. It can not only limit the elastic plate 92 so that the elastic plate 92 can slide flexibly, but also limit the movement stroke of the elastic plate 92. One end of the limiting plate 932 is fixedly connected to the connecting sleeve 91. Two springs 933 are provided between the connecting sleeve 91 and the elastic plate 92. The springs 933 are respectively sleeved on the outer surface of the limiting rod 931. The springs 933 can apply a certain pushing force to the elastic plate 92 so that the buckle 94 and the slot 95 always remain in the engaged state.

[0027] In this embodiment: The user inserts the tabs 6 into the connecting sleeve 91. At the same time, the tabs 6 push the buckles 94 to move to both sides through the inclined surface of the buckles 94. When the tabs 6 enter the top of the connecting sleeve 91, the spring 933 elastically restores and pushes the elastic plate 92 to slide towards the tabs 6. As the elastic plate 92 slides, it drives the buckles 94, so that the buckles 94 engage with the slots 95 on both sides of the tabs 6. When the electrode unit is damaged, the user presses the pressing plates 96 on both sides of the connecting sleeve 91. The pressing plates 96 squeeze the two ends of the push rod 97, so that the other two ends of the push rod 97 push the elastic plate 92 respectively, so that the elastic plate 92 drives the buckles 94 to separate from the slots 95 on the tabs 6, and the damaged electrode unit can be replaced.

[0028] Example 2

[0029] This embodiment aims to help solve the problem of battery leakage caused by frequent battery disassembly and reassembly. This embodiment is an improvement on Embodiment 1. For details, please refer to [link to Embodiment 1]. Figures 1-7The sealing mechanism 10 includes two sealing rings 101 disposed on the outside of the pole post 7. The sealing rings 101 are fixedly connected to the cover plate 2. The outer surface of the sealing rings 101 is set as a slope, and the diameter of the top is larger than that of the bottom. The bottom outer surface of the sealing rings 101 is coupled with a fixing ring 102. The fixing ring 102 is in contact with the outer surface of the sealing rings 101, so that the connection between the pole post 7 and the cover plate 2 is sealed. The two fixing rings 102 are fixedly connected to the conductive connection plate 8 respectively.

[0030] Both sides of the positive electrode 4 are coated with an electrode layer 11. An isolation plate 12 is provided between the electrode layer 11 and the negative electrode 5. The isolation plate 12 has through holes 13 arranged in a matrix inside. The through holes 13 can ensure that the electrolyte flows normally between the positive electrode 4 and the negative electrode 5, thereby ensuring the efficient migration of zinc ions and preventing short circuits.

[0031] The cover plate 2 is threaded with a sealing cap 14 near the electrode cavity 3. A sealing ring 15 is provided between the sealing cap 14 and the cover plate 2. This not only makes it convenient for users to add electrolyte to the inside of the electrode cavity 3, but also prevents leakage. The sealing ring 15 is respectively sleeved on the outside of the sealing cap 14. A sealing gasket 16 is provided between the cover plate 2 and the housing 1, which improves the sealing performance between the cover plate 2 and the housing 1.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A high-stability zinc-ion battery positive electrode, comprising a housing (1), characterized in that: The top of the housing (1) is provided with a cover plate (2). The interior of the housing (1) is divided into several electrode cavities (3) by a partition. Several positive electrode plates (4) are uniformly arranged inside the electrode cavity (3). A negative electrode plate (5) is provided on one side of each positive electrode plate (4). A tab (6) is fixedly connected to the opposite side of each positive electrode plate (4) and negative electrode plate (5). A pole post (7) is embedded in the diagonal of the cover plate (2). A conductive connecting plate (8) is fixedly connected to the bottom of each pole post (7). A connecting mechanism (9) is provided on the outside of the tab (6). A sealing mechanism (10) is provided on the cover plate (2) near the pole post (7).

2. The high-stability zinc-ion battery positive electrode sheet according to claim 1, characterized in that: The connecting mechanism (9) includes a connecting sleeve (91) sleeved on the outer surface of the tab (6). The connecting sleeve (91) is fixedly connected to the conductive connecting plate (8). Both sides of the connecting sleeve (91) are provided with elastic plates (92). The elastic plates (92) are connected to the connecting sleeve (91) through limiting members (93). The bottom of the elastic plates (92) is fixedly connected with buckles (94). The tab (6) is provided with several slots (95) evenly near the buckles (94). Both sides of the connecting sleeve (91) are provided with pressing plates (96). Both sides of the pressing plates (96) are rotatably connected with push rods (97). The end of the push rod (97) away from the pressing plate (96) is rotatably connected to the elastic plate (92).

3. The high-stability zinc-ion battery positive electrode sheet according to claim 2, characterized in that: The limiting member (93) includes two limiting rods (931) that are slidably installed inside the elastic plate (92). One end of the limiting rod (931) is fixedly connected to the limiting plate (932), and one end of the limiting plate (932) is fixedly connected to the connecting sleeve (91). Two springs (933) are provided between the connecting sleeve (91) and the elastic plate (92), and the springs (933) are respectively sleeved on the outer surface of the limiting rod (931).

4. The high-stability zinc-ion battery positive electrode sheet according to claim 1, characterized in that: The sealing mechanism (10) includes two sealing rings (101) disposed on the outside of the pole post (7). The sealing rings (101) are fixedly connected to the cover plate (2). The bottom outer surface of the sealing rings (101) is coupled with fixing rings (102). The two fixing rings (102) are fixedly connected to the conductive connecting plate (8) respectively.

5. The high-stability zinc-ion battery positive electrode sheet according to claim 1, characterized in that: Both sides of the positive electrode (4) are coated with an electrode layer (11), and an isolation plate (12) is provided between the electrode layer (11) and the negative electrode (5). The isolation plate (12) has through holes (13) arranged in a matrix inside.

6. The high-stability zinc-ion battery positive electrode sheet according to claim 1, characterized in that: Each cover plate (2) is threaded with a sealing cap (14) near the electrode cavity (3). A sealing ring (15) is provided between the sealing cap (14) and the cover plate (2). The sealing ring (15) is respectively sleeved on the outside of the sealing cap (14). A sealing gasket (16) is provided between the cover plate (2) and the housing (1).

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