Lithium battery of lithium-loaded graphene negative electrode material
By designing thermal conductive components and heat dissipation assemblies, the problem of heat accumulation in lithium batteries with lithium-loaded graphene anode materials under high energy density and high power density was solved, achieving rapid heat dissipation and improving battery safety and usable capacity.
Patent Information
- Application Number
- CN202423026810.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2034-12-09
AI Technical Summary
The heat generated during the charging and discharging process of lithium batteries with lithium-loaded graphene anode materials cannot be dissipated in time under high energy density and high power density, resulting in an increase in battery temperature and posing a safety hazard.
The design incorporates heat-conducting components and heat dissipation assemblies, including heat-conducting rods, heat sinks, cooling fans, and guide plates. It accelerates heat dissipation through both heat conduction and airflow, ensuring rapid heat dissipation from the battery casing.
It effectively reduces battery temperature, prevents lithium-ion insertion and extraction difficulties, and improves battery capacity and safety.
Smart Images
Figure CN223797390U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to lithium battery technical field especially relates to a lithium battery of lithium loaded graphene negative material. BACKGROUND
[0002] The lithium battery of lithium loaded graphene negative material is a new type of lithium ion battery, graphene has excellent electrical properties, its carrier mobility is extremely high, is thousands of times higher than carbon black, can greatly improve the charge and discharge speed of battery, reduces the polarization phenomenon of battery in the charge and discharge process, thereby improves the overall performance of battery, the large specific surface area can provide more active sites, is favorable to lithium ion adsorption and desorption, increases the reversible capacity of battery, and further enhances the energy density of battery, graphene is one of the materials with the highest mechanical properties, and also shows elastic hardening in lithium intercalation process, can effectively buffer the volume change of electrode material in the charge and discharge process, improves the stability and cycle life of electrode.
[0003] The lithium battery of lithium loaded graphene negative material has the characteristics of high energy density and high power density, in the charge and discharge process, especially in high rate charge and discharge, the chemical reaction in the battery is violent, a large amount of heat is generated, the generated heat cannot be discharged in time, and the heat is accumulated in the battery, which causes the temperature of the battery to rise and has certain danger. UTILITY MODEL CONTENTS
[0004] In order to solve the above problems, the utility model provides a lithium battery of lithium loaded graphene negative material, to more exactly solve the above-mentioned problems.
[0005] The utility model discloses the following technical scheme realizes:
[0006] The utility model discloses a lithium battery of lithium loaded graphene negative material, including base, the upper surface fixed connection lithium battery shell of base, the upper surface fixed connection of base is equipped with a plurality of heat conduction pieces between the heat dissipation frame and lithium battery shell, the inside of base is equipped with the mounting groove, and the heat dissipation assembly is arranged in the mounting groove.
[0007] In one example, the heat conduction piece includes a heat conduction rod, the heat conduction rod is fixedly connected with the heat dissipation frame, one end of the heat conduction rod is fixedly connected with a contact plate, and the contact plate is in contact with the lithium battery shell.
[0008] In one example, the base is provided with a ventilation groove, the ventilation groove is communicated with the mounting groove in the base, and the ventilation groove is located between the heat dissipation frame and the lithium battery shell.
[0009] In one example, the heat dissipation assembly comprises two vertical plates fixedly connected with the base, the upper surface of the vertical plate is fixedly connected with the mounting frame, the lower surface of the mounting frame is fixedly connected with a plurality of driving motors, and the main shaft of the driving motor is fixedly connected with the heat dissipation fan.
[0010] In one example, the side surface of the mounting frame is fixedly connected with a first conical ring, the first conical ring is fixedly connected with the base, the upper bottom surface of the mounting groove on the base is fixedly connected with a heat insulation pad, the four side surfaces of the heat insulation pad are fixedly connected with a second conical ring, and the ventilation groove and the heat dissipation fan are located between the first conical ring and the second conical ring.
[0011] In one example, the shape of the heat dissipation frame is annular, a plurality of through holes are arranged on the heat dissipation frame, a plurality of guide plates are fixedly connected with the four side surfaces of the heat dissipation frame, the guide plates are arranged in an inclined manner, a square through groove is arranged on the side wall of the base and the mounting frame, and a dustproof net is arranged in the square through groove.
[0012] In one example, the material of the guide plate, the heat dissipation frame, the contact plate and the heat conduction rod is copper.
[0013] The lithium battery with lithium-loaded graphene negative electrode material can bring the following beneficial effects:
[0014] Firstly, when the temperature of the shell is affected by the internal temperature, the heat is conducted to the lithium battery shell, is transmitted to the heat dissipation frame through the contact contact plate, and is transmitted to the outside through the heat dissipation frame. The parts of the lithium battery shell that are not in contact with the contact plate dissipate heat to the air, which is conducive to accelerating the heat dissipation speed of the lithium battery shell, meeting the heat dissipation requirement of the lithium battery with lithium-loaded graphene negative electrode material in use, avoiding continuous high temperature, and making the embedding and de-embedding of internal lithium ions difficult, thereby reducing the available capacity of the battery.
[0015] Secondly, by arranging the guide plate, the first conical ring and the second conical ring, the airflow blows to the ventilation groove through the gap between the first conical ring and the second conical ring, blows out from the ventilation groove, and under the inclined guiding action of the guide plate, part of the airflow is inclined to blow to the lithium battery shell, thereby accelerating the heat dissipation speed of the lithium battery shell. The guide plate is made of metal material and is fixedly connected with the heat dissipation frame, so as to increase the heat dissipation area of the heat dissipation frame, thereby accelerating the heat dissipation speed of the heat dissipation frame and reducing the airflow loss. BRIEF DESCRIPTION OF DRAWINGS
[0016] The drawings described herein are used to provide a further understanding of the present application, and form a part of the present application. The illustrative embodiments of the present application and their descriptions serve to explain the present application, and do not constitute an improper limitation on the present application.
[0017] In the drawings:
[0018] Figure 1 This is a schematic diagram of the structure of this utility model.
[0019] Figure 2 This is a cross-sectional structural diagram of the present invention.
[0020] Figure 3 This is a schematic diagram of the ventilation slot of this utility model.
[0021] Figure 4 This is a schematic diagram of the structure of the heat sink and guide plate of this utility model.
[0022] In the diagram: 1. Base; 2. Lithium battery casing; 3. Heat sink; 4. Heat-conducting component; 41. Heat-conducting rod; 42. Contact plate; 5. Heat dissipation assembly; 51. Vertical plate; 52. Mounting bracket; 53. Drive motor; 54. Cooling fan; 6. Ventilation slot; 7. First conical ring; 8. Heat insulation pad; 9. Second conical ring; 10. Guide plate; 11. Dustproof net. Detailed Implementation
[0023] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.
[0024] like Figures 1-4As shown, this utility model provides a lithium battery with a lithium-loaded graphene anode material. It is characterized by comprising a base 1, a lithium battery casing 2 fixedly connected to the upper surface of the base 1, a heat sink 3 fixedly connected to the upper surface of the base 1, a plurality of heat-conducting components 4 between the heat sink 3 and the lithium battery casing 2, an installation groove inside the base 1, and a heat dissipation assembly 5 disposed within the installation groove. Each heat-conducting component 4 includes a heat-conducting rod 41 fixedly connected to the heat sink 3, and one end of the heat-conducting rod 41 fixedly connected to a contact plate 42, which contacts the lithium battery casing 2. The lithium battery casing 2 contains a separator, electrolyte, and electrode leads, etc. The anode material is lithium-loaded graphene. This device is designed for use with lithium batteries using lithium-loaded graphene as the anode material. Lithium batteries using lithium-loaded graphene as the anode material exhibit high energy density and high power efficiency during use. Due to the high density characteristics, a large amount of heat is generated during use, causing the temperature of the lithium battery to rise. At this time, a large number of contact plates 42 are in contact with the outside of the lithium battery casing 2. When the casing temperature is affected by the internal temperature, the heat is conducted to the lithium battery casing 2, and then transferred to the heat conduction rods 41 through the contact plates 42. The heat is then transferred to the heat sink 3 through multiple heat conduction rods 41, and then transferred to the outside through the heat sink 3. The parts of the lithium battery casing 2 that are not in contact with the contact plates 42 dissipate heat to the air. Since the thermal conductivity of metal is greater than the static heat dissipation rate, it is beneficial to accelerate the heat dissipation rate of the lithium battery casing 2, so as to meet the heat dissipation requirements of lithium batteries with lithium graphene as the negative electrode material, and avoid continuous high temperature, which makes it difficult for internal lithium ion insertion and extraction, thereby reducing the usable capacity of the battery.
[0025] like Figure 2 As shown, the base 1 is provided with a ventilation slot 6, which is connected to the mounting slot inside the base 1. The ventilation slot 6 is located between the heat sink 3 and the lithium battery casing 2. The heat dissipation assembly 5 includes two vertical plates 51, which are fixedly connected to the base 1. The upper surface of the vertical plates 51 is fixedly connected to the mounting bracket 52, and the lower surface of the mounting bracket 52 is fixedly connected to multiple drive motors 53. The main shaft of the drive motor 53 is fixedly connected to the cooling fan 54. When the lithium battery is continuously at a high temperature and the heat dissipation speed of the heat sink 3 is no longer sufficient to reduce the temperature of the lithium battery, the cooling fan 54 under the base 1 can be turned on. All the cooling fans 54 start rotating and generate airflow. The airflow blows upward through the ventilation slot 6 and passes between the heat sink 3 and the lithium battery casing 2, accelerating the airflow and carrying away the heat from the heat conduction rod 41, the heat sink 3, and the lithium battery casing 2, thus accelerating the overall heat dissipation speed. At this time, the heat sink 3 and the airflow provide dual heat dissipation, accelerating the heat dissipation speed.
[0026] like Figure 2 , Figure 3 and Figure 4As shown, the first conical ring 7 is fixedly connected to the side of the mounting bracket 52. The first conical ring 7 is fixedly connected to the base 1. The heat insulation pad 8 is fixedly connected to the upper bottom surface of the mounting groove on the base 1. The four sides of the heat insulation pad 8 are all fixedly connected to the second conical ring 9. The ventilation slot 6 and the cooling fan 54 are located between the first conical ring 7 and the second conical ring 9. The heat sink 3 is ring-shaped and has multiple through holes. Multiple guide plates 10 are fixedly connected to the four sides of the heat sink 3. The guide plates 10 are inclined. The side wall of the base 1 and the mounting bracket 52 have square through slots. A dustproof net 11 is installed in the square through slots. The guide plates 10, heat sink 3, contact plate 42 and heat conduction rod 41 are all made of copper. When the driving electric current is applied... When the motor 53 is turned on, driving the cooling fan 54 to rotate and generate airflow, the airflow is blown through the gap between the first conical ring 7 and the second conical ring 9 and blown out of the ventilation slot 6. Under the inclined guidance of the guide plate 10, part of the airflow is tilted and blown towards the lithium battery casing 2, which accelerates the heat dissipation of the lithium battery casing 2. At the same time, the guide plate 10 is made of metal and is fixedly connected to the heat sink 3, which increases the heat dissipation area of the heat sink 3, thereby accelerating the heat dissipation of the heat sink 3 and reducing airflow loss. The heat insulation pad 8 can prevent the heat of the drive motor 53 from rising and affecting the lithium battery casing 2 above. The square slot facilitates the passage of airflow.
[0027] Working principle: A large number of contact plates 42 are in contact with the outside of the lithium battery casing 2. When the casing temperature is affected by the internal temperature, the heat is conducted to the lithium battery casing 2 and transferred to the heat conduction rods 41 through the contact plates 42. The heat is then transferred to the heat sink 3 through multiple heat conduction rods 41 and transferred to the outside through the heat sink 3. When the drive motor 53 is turned on, it drives the cooling fan 54 to rotate and generate airflow. At this time, through the action of the first conical ring 7 and the second conical ring 9, the airflow is blown into the ventilation groove 6 through the gap between the first conical ring 7 and the second conical ring 9 and blown out from the ventilation groove 6. Under the inclined guidance of the guide plate 10, part of the airflow is tilted and blown towards the lithium battery casing 2, which accelerates the heat dissipation speed of the lithium battery casing 2. At the same time, the guide plate 10 is made of metal and is fixedly connected to the heat sink 3, which increases the heat dissipation area of the heat sink 3 and thus accelerates the heat dissipation of the heat sink 3.
[0028] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.
[0029] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.
Claims
1. A lithium battery of a lithium-loaded graphene negative material, characterized in that, Including base (1), the upper surface of base (1) is fixedly connected with lithium battery shell (2), the upper surface of base (1) is fixedly connected with heat dissipation frame (3), a plurality of heat conducting pieces (4) are arranged between heat dissipation frame (3) and lithium battery shell (2), the inside of base (1) is provided with mounting groove, and heat dissipation assembly (5) is arranged in mounting groove.
2. A lithium battery with a lithium-loaded graphene anode material according to claim 1, characterized in that, The heat conducting piece (4) includes a heat conducting rod (41), the heat conducting rod (41) is fixedly connected with the heat dissipation frame (3), one end of the heat conducting rod (41) is fixedly connected with a contact plate (42), and the contact plate (42) is in contact with the lithium battery shell (2).
3. A lithium battery with a lithium-loaded graphene anode material according to claim 2, characterized in that, The base (1) is provided with a ventilation groove (6), the ventilation groove (6) is communicated with the mounting groove in the base (1), and the ventilation groove (6) is located between the heat dissipation frame (3) and the lithium battery shell (2).
4. The lithium battery of claim 3, wherein the lithium battery is a lithium-ion battery. The heat dissipation assembly (5) includes two vertical plates (51), the two vertical plates (51) are fixedly connected with the base (1), the upper surface of the vertical plate (51) is fixedly connected with a mounting bracket (52), and the lower surface of the mounting bracket (52) is fixedly connected with a plurality of drive motors (53), the main shaft of the drive motor (53) is fixedly connected with a heat dissipation fan (54).
5. The lithium battery of claim 4, wherein the lithium battery is a lithium-ion battery. The side surface of the mounting bracket (52) is fixedly connected with a first conical ring (7), the first conical ring (7) is fixedly connected with the base (1), the upper bottom surface of the mounting groove in the base (1) is fixedly connected with a heat insulation pad (8), the four side surfaces of the heat insulation pad (8) are fixedly connected with a second conical ring (9), and the ventilation groove (6) and the heat dissipation fan (54) are located between the first conical ring (7) and the second conical ring (9).
6. The lithium battery of claim 4, wherein the lithium battery is a lithium-ion battery. The shape of the heat dissipation frame (3) is annular, a plurality of through holes are arranged on the heat dissipation frame (3), the four side surfaces of the heat dissipation frame (3) are fixedly connected with a plurality of guide plates (10), the guide plates (10) are arranged obliquely, and square through grooves are arranged on the side wall of the base (1) and the mounting bracket (52), and a dustproof net (11) is arranged in the square through groove.
7. The lithium battery of claim 6, wherein the lithium battery is a lithium-ion battery. The material of the guide plate (10), the heat dissipation frame (3), the contact plate (42) and the heat conducting rod (41) is copper.