Large cylindrical lithium battery structure with steel shell

Abstract

The utility model relates to the technical field of lithium batteries, and provides a steel shell large cylindrical lithium battery structure which comprises a center pin and a storage heat dissipation mechanism. According to the utility model, the steel shell with the grooves on the surface is used, the grooves on the surface of the steel shell can increase the surface area of the battery, the heat dissipation speed is easy to increase, the temperature in the battery is quickly reduced, the battery is kept at a proper working temperature, the service life is prolonged, and the heat dissipation space can be increased by arranging the plurality of layers of electrode plates; according to the invention, the internal temperature of the battery is reduced, the influence on the service life of the battery due to too high internal temperature is avoided, the heat dissipation pipe directly dissipates heat in the center of the battery, the heat conduction distance is reduced, and the heat dissipation efficiency is improved, and the aluminum oxide ceramic coating is arranged, has very high heat conductivity, is stable in chemical property and is not easy to react with other substances; according to the utility model, the damping ring is arranged and can help to fix the battery at the mounting position, so that the battery is prevented from shifting in the vibration process.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, in particular to a steel shell large cylindrical lithium battery structure. Background Technique

[0002] The frequency converter communication device is a bridge connecting the frequency converter and external devices (such as PLC, industrial computer, etc.). Through specific communication protocols, it realizes the interaction of data transmission and control instructions. It enables the frequency converter to receive instructions from the upper computer, adjust parameters such as motor speed and operating status in real time, and at the same time feedback the operating data of the frequency converter to the upper computer for easy monitoring and management. The application of the communication device improves the flexibility and stability of the automatic control system and brings an efficient and energy-saving optimization scheme for industrial production. Whether it is remote monitoring, centralized control, or multi-frequency converter collaborative work, the frequency converter communication device plays an indispensable role.

[0003] According to the search, the Chinese utility model publication number: CN220692149U discloses a steel shell large cylindrical lithium battery structure. The steel shell large cylindrical lithium battery structure obtained by the above design of the utility model. In this steel shell large cylindrical lithium battery structure, by setting injection-molded PP glue, the shell and the current collector plate are solidified and compounded together by nano-injection molding. The solidified injection-molded PP glue wraps the current collector plate to ensure that the positive electrode ear end of the bare battery cell after assembly does not contact the shell, avoiding short circuit. A convex groove tube is arranged at the center of the current collector plate, and the convex surface of the convex groove tube fits with the central hole arranged at the center of the bare battery cell, playing a role in limiting and fixing the bare battery cell, and increasing the heat dissipation effect of the bare battery cell and ensuring that the central electrode plate of the bare battery cell will not collapse. This steel shell large cylindrical lithium battery structure adopts a minimalist process, reduces the proportion of the battery space occupied by the cover plate, and correspondingly realizes a higher battery capacity. And the positive end uses laser penetration welding technology to avoid dust generation, improve the yield rate, and has a larger current collector plate welding area to achieve greater overcurrent and better heat dissipation effect.

[0004] However, when implementing the above technical solutions, there are some problems that need to be considered: First, the battery generates heat during use, and the large cylindrical shape of the battery results in poor heat dissipation performance, reducing the battery life. Second, the connection stability of the battery during use is poor, and it is easily loosened under the influence of vibration during use. Content of the Utility Model

[0005] The purpose of the content of the utility model is to provide a steel shell large cylindrical lithium battery structure to solve the problems raised in the above background technique.

[0006] To achieve the above object, the present utility model provides the following technical solutions: A steel shell large cylindrical lithium battery structure, including a center pin and a storage and heat dissipation mechanism. The storage and heat dissipation mechanism is arranged outside the center pin. An electrode sheet is arranged outside the center pin. A steel outer shell is arranged outside the electrode sheet. Heat dissipation tubes are arranged between the electrode sheets.

[0007] Preferably, a bottom plate is arranged below the center pin, and a top plate is arranged above the center pin. The bottom plate and the top plate are of matching dimensions.

[0008] Preferably, multiple layers of electrode sheets are provided. One end of the electrode sheet is connected to the bottom plate, and the other end of the electrode sheet is connected to the top plate.

[0009] Preferably, the steel outer shell is fixedly connected to the bottom plate and the top plate. Grooves are arranged on the surface of the steel outer shell. The steel outer shell is of matching dimensions with the bottom plate and the top plate.

[0010] Preferably, a coating is applied to the inner surface of the steel outer shell. The coating is a ceramic coating, and the coating is closely attached to the steel outer shell.

[0011] Preferably, the heat dissipation tubes are fixedly connected to the bottom plate and the top plate. The heat dissipation tubes are evenly distributed inside the steel outer shell, and multiple groups of heat dissipation tubes are provided.

[0012] Preferably, shock-absorbing rings are arranged on both sides of the steel outer shell. The shock-absorbing rings are adhered to the bottom plate and the top plate. The shock-absorbing rings are made of silica gel.

[0013] Preferably, an electrode head is arranged above the top plate. A connecting piece is arranged outside the electrode head. A fixing bolt is threadedly connected to the top of the connecting piece.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] By using a steel outer shell with grooves on its surface, the grooves on the surface of the steel outer shell can increase its surface area, which is conducive to improving the heat dissipation speed, quickly cooling the inside of the battery, keeping the battery at a suitable working temperature, and extending the service life. By arranging multiple layers of electrode sheets, the arrangement of multiple layers of electrode sheets can increase the heat dissipation space, avoiding the influence of too high internal temperature on the battery life. By arranging heat dissipation tubes, the heat dissipation tubes directly dissipate the heat in the center of the battery, reducing the heat conduction distance and improving the heat dissipation efficiency. By arranging an alumina ceramic coating, the alumina ceramic coating has a high thermal conductivity and stable chemical properties, and is not easy to react with other substances;

[0016] The utility model fixes the battery in the installation position by setting a shock-absorbing ring. The shock-absorbing ring can prevent the battery from shifting during vibration, ensuring the stability and safety of the battery assembly, and protecting the internal structure of the battery from damage. By setting a connecting piece and a fixing bolt, the wire is inserted into the space between the electrode head and the connecting piece, and then fixed firmly with the fixing bolt to improve the stability of the connection. Brief Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the external structure of the utility model.

[0018] Figure 2 It is a schematic diagram of the internal structure of the utility model seen from above.

[0019] Figure 3 It is a schematic diagram of the internal structure of the utility model seen from the side.

[0020] Figure 4 For the utility model Figure 3 Enlarged view of part A.

[0021] In the figure: 1, central pin; 2, storage and heat dissipation mechanism; 201, bottom plate; 202, top plate; 203, electrode plate; 204, steel shell; 205, coating; 206, heat dissipation pipe; 207, shock-absorbing ring; 208, electrode head; 209, connecting piece; 210, fixing bolt. Detailed Embodiment

[0022] In order to make the technical means, creative features, achieved purposes and functions of the utility model easy to understand, the following further elaborates the utility model in combination with specific embodiments.

[0023] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "provided with", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0026] Please refer to Figures 1-4 , an embodiment provided by the present utility model: a steel shell large cylindrical lithium battery structure, including a center pin 1 and a storage and heat dissipation mechanism 2. The storage and heat dissipation mechanism 2 is arranged outside the center pin 1. An electrode sheet 203 is arranged outside the center pin 1, a steel outer shell 204 is arranged outside the electrode sheet 203, and a heat dissipation tube 206 is arranged between the electrode sheets 203.

[0027] Specifically, a bottom plate 201 is arranged below the center pin 1, a top plate 202 is arranged above the center pin 1. The bottom plate 201 and the top plate 202 are of matching sizes, and the bottom plate 201 and the top plate 202 cooperate to seal the battery.

[0028] Specifically, multiple layers of electrode sheets 203 are arranged. One end of the electrode sheet 203 is connected to the bottom plate 201, and the other end of the electrode sheet 203 is connected to the top plate 202. The arrangement of multiple layers of electrode sheets 203 can increase the heat dissipation space and avoid the internal temperature being too high and affecting the battery life.

[0029] Specifically, the steel outer shell 204 is fixedly connected to the bottom plate 201 and the top plate 202. Grooves are arranged on the surface of the steel outer shell 204. The steel outer shell 204 and the bottom plate 201 and the top plate 202 are of matching sizes. The grooves on the surface of the steel outer shell 204 can increase its surface area, which is conducive to increasing the heat dissipation speed, quickly cooling the inside of the battery, keeping the battery at a suitable working temperature, and increasing the service life.

[0030] Specifically, a coating 205 is coated on the inner surface of the steel outer shell 204. The coating 205 is a ceramic coating 205. The coating 205 is closely attached to the steel outer shell 204. The alumina ceramic coating 205 has a very high thermal conductivity and stable chemical properties and is not easy to react with other substances.

[0031] Specifically, the heat dissipation tube 206 is fixedly connected to the bottom plate 201 and the top plate 202. The heat dissipation tubes 206 are evenly distributed inside the steel shell 204. Multiple groups of heat dissipation tubes 206 are provided. The heat dissipation tubes 206 directly dissipate the heat at the center of the battery, reducing the heat conduction distance and improving the heat dissipation efficiency.

[0032] Specifically, shock-absorbing rings 207 are provided on both sides of the steel shell 204. The shock-absorbing rings 207 are adhered to the bottom plate 201 and the top plate 202. The shock-absorbing rings 207 are made of silica gel. The shock-absorbing rings 207 can help fix the battery in the installation position, prevent the battery from shifting during vibration, ensure the stability and safety of the battery assembly, and at the same time protect the internal structure of the battery from damage.

[0033] Specifically, an electrode head 208 is provided above the top plate 202. A connecting piece 209 is provided outside the electrode head 208. A fixing bolt 210 is threadedly connected to the top of the connecting piece 209. Insert the wire into the space between the electrode head 208 and the connecting piece 209, and then fix it firmly with the fixing bolt 210 to improve the connection stability.

[0034] Working principle: First, insert the wire into the space between the electrode head 208 and the connecting piece 209, and then fix it firmly with the fixing bolt 210 to improve the connection stability. At the same time, the shock-absorbing rings 207 can help fix the battery in the installation position, prevent the battery from shifting during vibration, ensure the stability and safety of the battery assembly, and at the same time protect the internal structure of the battery from damage. During use, the setting of multiple layers of electrode plates 203 can increase the heat dissipation space, avoid the internal temperature being too high and affecting the battery life. The heat dissipation tubes 206 directly dissipate the heat at the center of the battery, reducing the heat conduction distance and improving the heat dissipation efficiency. At the same time, the grooves on the surface of the steel shell 204 can increase its surface area, which is conducive to increasing the heat dissipation speed, quickly cooling the inside of the battery, keeping the battery at a suitable working temperature, and improving the service life.

[0035] The above are only the embodiments of the present invention. Specific structures and common knowledge such as characteristics known in the solution are not described in detail here. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A steel shell large cylindrical lithium battery structure, comprising a center pin (1) and a storage and heat dissipation mechanism (2), characterized in that: A storage and heat dissipation mechanism (2) is arranged on the outside of the center pin (1), an electrode sheet (203) is arranged on the outside of the center pin (1), a steel shell (204) is arranged on the outside of the electrode sheet (203), and a heat dissipation pipe (206) is arranged between the electrode sheets (203).

2. A steel shell large cylindrical lithium battery structure according to claim 1, characterized in that: A bottom plate (201) is arranged below the center pin (1), and a top plate (202) is arranged above the center pin (1), and the bottom plate (201) and the top plate (202) are matched in size.

3. A steel shell large cylindrical lithium battery structure according to claim 1, characterized in that: The electrode sheet (203) is provided with multiple layers, one end of the electrode sheet (203) is connected to the bottom plate (201), and the other end of the electrode sheet (203) is connected to the top plate (202).

4. A steel shell large cylindrical lithium battery structure according to claim 1, characterized in that: The steel shell (204) is fixedly connected to the bottom plate (201) and the top plate (202); a groove is provided on the surface of the steel shell (204); and the sizes of the steel shell (204) and the bottom plate (201) and the top plate (202) match.

5. The steel shell large cylindrical lithium battery structure according to claim 1, characterized in that: The inner surface of the steel shell (204) is coated with a coating (205), and the coating (205) is a ceramic coating (205). The coating (205) is tightly fitted to the steel shell (204).

6. A steel shell large cylindrical lithium battery structure according to claim 1, characterized in that: The heat dissipation pipes (206) are fixedly connected to the bottom plate (201) and the top plate (202); the heat dissipation pipes (206) are evenly distributed inside the steel shell (204); and a plurality of groups of heat dissipation pipes (206) are provided.

7. A steel shell large cylindrical lithium battery structure according to claim 1, characterized in that: Shock-absorbing rings (207) are arranged on both sides of the steel shell (204); the shock-absorbing rings (207) are bonded to the bottom plate (201) and the top plate (202); and the shock-absorbing rings (207) are made of silicone.

8. The steel shell large cylindrical lithium battery structure according to claim 2, characterized in that: An electrode head (208) is arranged above the top plate (202), a connecting piece (209) is arranged on the outer side of the electrode head (208), and a fixing bolt (210) is threadedly connected to the top of the connecting piece (209).

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