Square aluminum shell energy storage solid-state lithium battery pole piece

Abstract

The utility model discloses a square aluminum shell energy storage solid-state lithium battery pole piece which comprises a pole piece body and a lap joint plate, a plurality of pole lugs are evenly arranged on the outer side of the pole piece body, through grooves are formed in the pole lugs to form a hollow structure, two inserting grooves are symmetrically formed in the lap joint plate, the pole piece body is connected with the inserting grooves in a matched and inserted mode, and the lap joint plate is connected with the pole piece body in a matched and inserted mode. Lap joint pieces are arranged at the two ends of the lap joint plate, the ends of the lap joint pieces are inserted into the through grooves in a matched mode and extend to the sides, away from the lap joint plate, of the through grooves, and bent parts are further formed at the ends of the lap joint pieces. By means of the structure, the lap joint plates are arranged to be used for connection work of the pole pieces, and splicing work between the pole pieces is facilitated. And the arrangement of the heat dissipation copper sheet, the heat dissipation plate, the through groove and the groove is beneficial for improving the heat dissipation efficiency of the pole piece, so that the charge-discharge performance and the heat dissipation performance of the battery are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage batteries, in particular to a square aluminum shell energy storage solid-state lithium battery pole piece. Background Art

[0002] Solid-state lithium batteries for energy storage have garnered widespread attention due to their high energy density, safety, and long cycle life. Compared to traditional liquid lithium batteries, solid-state lithium batteries utilize solid electrolytes, eliminating the risks of leakage and thermal runaway associated with liquid electrolytes, significantly improving battery safety. In solid-state lithium batteries, the electrode, a key component of these batteries, typically consists of an active material, a conductive agent, and a binder. Its structure directly impacts the battery's electrochemical performance.

[0003] In the production process of solid-state lithium batteries, the current cutting process makes it difficult to splice the pole pieces after completion to adjust the length according to specific needs. This limitation has an adverse impact on the flexibility and adaptability of the battery. In addition, when the solid-state lithium battery is working at high power, the pole piece area may generate high heat. Due to the relatively low thermal conductivity of the solid electrolyte, the heat accumulated in the pole piece is difficult to dissipate effectively, which can easily lead to an increase in battery temperature, affecting the cycle life of the battery and may also cause safety hazards. Therefore, the present invention provides a square aluminum shell energy storage solid-state lithium battery pole piece to solve the problems raised in the above background technology. Utility Model Content

[0004] The present invention aims to provide a square aluminum-cased solid-state lithium battery electrode for energy storage. A lap plate is provided for connecting the electrode plates, facilitating splicing between the electrode plates. Furthermore, the provision of a heat dissipation copper sheet, heat dissipation plate, through-slots, and grooves helps improve the heat dissipation efficiency of the electrode plates, thereby enhancing the battery's charge / discharge performance and heat dissipation performance.

[0005] To achieve the above-mentioned purpose, a square aluminum shell energy storage solid-state lithium battery pole piece is provided, including a pole piece body and a lap plate, a plurality of pole ears are evenly arranged on the outside of the pole piece body, and a through groove is opened inside the pole ears to form a hollow structure, and two slots are symmetrically opened inside the lap plate, and the pole piece body is plugged into the slot, and lap plates are provided at both ends of the lap plate, and the end of the lap plate is plugged into the through groove and extends to the side of the through groove away from the lap plate, and the ends of the lap plates are also formed with bent portions.

[0006] According to the square aluminum shell energy storage solid-state lithium battery pole piece, heat dissipation copper sheets are embedded in the interior of both sides of the lap plate, a heat dissipation plate is also installed on the side of the lap plate close to the heat dissipation copper sheet, and a wavy portion is provided on the side of the heat dissipation plate away from the lap plate.

[0007] According to the square aluminum shell energy storage solid-state lithium battery pole piece, the connecting piece is made of copper, and the pole ear is also made of copper.

[0008] According to the square aluminum shell energy storage solid-state lithium battery pole piece, the heat sink is made of aluminum.

[0009] According to the square aluminum shell energy storage solid-state lithium battery pole piece, the outer surface of the pole ear is provided with grooves to form a multi-groove structure.

[0010] According to the square aluminum shell energy storage solid-state lithium battery pole piece, the heat dissipation copper sheet is configured as a serpentine structure.

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

[0012] Compared to existing technologies, this square aluminum-shelled solid-state lithium battery electrode facilitates splicing of the electrodes by providing a connecting plate for the electrodes. Furthermore, the arrangement of the heat dissipation copper sheet, heat dissipation plate, through-slot, and groove helps improve the heat dissipation efficiency of the electrode, thereby enhancing the battery's charge-discharge and heat dissipation performance.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0015] Figure 1 This is a schematic diagram of the overall structure of a square aluminum shell energy storage solid-state lithium battery electrode of the utility model;

[0016] Figure 2 This utility model is a square aluminum shell energy storage solid-state lithium battery pole piece Figure 1 A in the middle is an enlarged structural diagram;

[0017] Figure 3 This is a schematic diagram of the explosion structure of a square aluminum shell energy storage solid-state lithium battery electrode in the utility model.

[0018] Legend:

[0019] 1. Pole body; 2. Pole ear; 3. Lap plate; 4. Through slot; 5. Lap plate; 6. Bend portion; 7. Groove; 8. Heat sink; 9. Wave portion; 10. Slot; 11. Heat dissipation copper sheet. DETAILED DESCRIPTION

[0020] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0021] Reference Figure 1-3 The embodiment of the utility model is a square aluminum shell energy storage solid-state lithium battery pole piece, which includes a pole piece body 1 and a lap plate 3. A plurality of pole ears 2 are evenly arranged on the outside of the pole piece body 1. The pole ears 2 are each provided with a through groove 4 inside to form a hollow structure. The outer surface of the pole ears 2 is provided with a groove 7 to form a multi-groove structure, which increases the surface area of ​​the pole ears 2 and helps to improve the heat dissipation performance of the pole piece. Two slots 10 are symmetrically provided inside the lap plate 3. The pole piece body 1 is plugged into the slots 10 to achieve a stable connection between the pole piece body 1 and the lap plate 3. Both ends of the lap plate 3 are provided with lap pieces 5. The ends of the lap pieces 5 are plugged into the through groove 4 and extend to the side of the through groove 4 away from the lap plate 3. The ends of the lap pieces 5 are also formed with a bent portion 6, which increases the contact area between the lap pieces 5 and the through groove 4 and improves the stability of the connection.

[0022] To further improve the heat dissipation performance of the electrode, heat dissipation copper sheets 11 are embedded in both sides of the connecting plate 3. These sheets are designed in a serpentine structure, increasing the contact area between them and the connecting plate 3, helping to more quickly conduct heat generated by the battery. Heat dissipation plates 8 are also installed on the side of the connecting plate 3 closest to the heat dissipation copper sheets 11. The side of the connecting plate 3 away from the connecting plate 3 is also equipped with a wavy portion 9. The design of the wavy portion 9 increases the surface area of ​​the heat dissipation plate 8, further improving the heat dissipation effect.

[0023] The strap 5 and the tab 2 are both made of copper, which has good electrical conductivity and thermal conductivity, and helps to improve the battery's charge and discharge performance and heat dissipation performance. The heat sink 8 is made of aluminum, which also has good thermal conductivity and is light in weight, and helps to reduce the overall weight of the pole piece, and at the same time makes the pole piece manufacturing more economical.

[0024] Working principle: When the pole piece body 1 is spliced, the pole piece body 1 is inserted into the slot 10 and connected to the lap plate 3. At this time, the end of the lap plate 5 is inserted into the through slot 4 and then bent, which increases the stability of the connection between the pole piece body 1 and the lap plate 3.

[0025] The outer sides of the lap plate 3 are provided with heat dissipation copper sheets 11 and heat dissipation plates 8, which help to conduct away the heat generated by the battery more quickly. At the same time, the through slots 4 and grooves 7 provided on the tabs 2 increase the surface area of ​​the tabs 2, helping to improve the heat dissipation efficiency of the tabs, thereby improving the battery's charge and discharge performance and heat dissipation performance.

[0026] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A square aluminum shell energy storage solid-state lithium battery pole piece, characterized in that: The invention comprises a pole piece body (1) and a lap plate (3), wherein a plurality of pole ears (2) are evenly arranged on the outside of the pole piece body (1), and a through slot (4) is provided inside the pole ears (2) to form a hollow structure, and two slots (10) are symmetrically provided inside the lap plate (3), and the pole piece body (1) is plugged into the slots (10), and lap plates (5) are provided at both ends of the lap plate (3), and the ends of the lap plates (5) are plugged into the through slots (4) and extend to the side of the through slots (4) away from the lap plate (3), and the ends of the lap plates (5) are also formed with bending portions (6).

2. A square aluminum shell energy storage solid-state lithium battery pole piece according to claim 1, characterized in that: Heat dissipation copper sheets (11) are embedded in the interior of both sides of the lap plate (3), a heat dissipation plate (8) is installed on the side of the lap plate (3) close to the heat dissipation copper sheet (11), and a wave portion (9) is provided on the side of the heat dissipation plate (8) away from the lap plate (3).

3. The square aluminum shell energy storage solid-state lithium battery pole piece according to claim 2, characterized in that: The connecting piece (5) is made of copper, and the tab (2) is also made of copper.

4. A square aluminum shell energy storage solid-state lithium battery pole piece according to claim 3, characterized in that: The heat dissipation plate (8) is made of aluminum.

5. A square aluminum shell energy storage solid-state lithium battery pole piece according to claim 4, characterized in that: The outer surface of the tab (2) is provided with a groove (7) to form a multi-groove structure.

6. The square aluminum shell energy storage solid-state lithium battery pole piece according to claim 5, characterized in that: The heat dissipation copper sheet (11) is configured as a serpentine structure.

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