A maintenance-free lithium battery
By introducing heat dissipation components into lithium batteries, and utilizing a combination of arc-shaped plates, heat-conducting plates, and heat dissipation fins, the problem of heat conduction in lithium batteries under vacuum conditions is solved, achieving efficient heat dissipation and preventing overheating damage to lithium batteries.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONGSHAN DUOBEIJIA ELECTRONIC TECH CO LTD
- Filing Date
- 2025-07-10
- Publication Date
- 2026-07-03
AI Technical Summary
Existing maintenance-free lithium batteries have difficulty conducting heat in a vacuum state, leading to overheating and damage.
The heat dissipation components include an arc plate, a heat conduction plate, and heat dissipation fins. The internal heat is absorbed by the connecting plate and conducted to the arc plate through the heat conduction plate. Finally, the heat is dissipated to the outside through the heat dissipation fins, increasing the heat dissipation area and improving heat dissipation efficiency.
It effectively avoids overheating damage to lithium batteries, improves the heat dissipation efficiency of lithium batteries, and ensures that lithium batteries can still operate safely in a vacuum state.
Smart Images
Figure CN224458224U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lithium battery technology, specifically to a maintenance-free rechargeable lithium battery. Background Technology
[0002] Maintenance-free lithium batteries are lithium-ion battery products that achieve "long life, self-monitoring, and low failure" through material innovation, structural optimization, and intelligent system integration. Their core value lies in reducing manual maintenance costs and they are suitable for scenarios where maintenance is difficult or high reliability is required.
[0003] A search revealed that patent application number 201921213686.7 discloses a maintenance-free lithium battery, comprising a transparent cylinder, a bottom cover, a sleeve ring, an end cover, a vacuum connector, a first terminal, a second terminal, a U-shaped bracket, a first nut, a second nut, screws, and a battery assembly. The sleeve ring and the bottom cover are respectively disposed at the front and rear ends of the transparent cylinder. The end cover is detachably fixed to the outside of the sleeve ring by multiple screws. The vacuum connector and the first terminal are respectively fixed to the outside of the sleeve ring by the second nut and the first nut. The outside of the sleeve ring is also provided with a second terminal and a U-shaped bracket. The battery assembly is disposed inside the transparent cylinder and between the sleeve ring and the bottom cover.
[0004] Although this maintenance-free lithium-ion battery uses a vacuum pump to remove air from the transparent cylinder, bottom cover, sleeve ring, and end cap, preventing dust and moisture from contacting the battery components and effectively providing heat insulation, the traditional heat conduction and convection mechanisms completely fail due to the lack of a heat transfer medium after the vacuum pump removes the air from the transparent cylinder. Under these extreme conditions, the heat generated by internal chemical reactions and resistance during battery operation can only be dissipated through radiation. However, the heat dissipation efficiency of radiation is far lower than that of conduction and convection with a medium, causing heat to accumulate rapidly inside the battery. As the temperature continues to rise, the lithium-ion battery is highly susceptible to overheating and damage.
[0005] Therefore, we propose a maintenance-free rechargeable lithium battery. Utility Model Content
[0006] To address the shortcomings of existing technologies, this utility model provides a maintenance-free rechargeable lithium battery, which solves the problem that after existing devices remove the air from the inside of the transparent tube to create a vacuum, the heat generated inside the lithium battery is difficult to conduct to the outside, leading to the lithium battery being prone to overheating and damage.
[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a maintenance-free rechargeable lithium battery, comprising a transparent tube, a bottom cover, an end cover, and a maintenance-free lithium battery body. The bottom cover is fixedly connected to the rear end of the transparent tube, and an end cover is provided at the front end of the transparent tube. The maintenance-free lithium battery body is disposed inside the transparent tube, and a positive terminal and a negative terminal connected to the maintenance-free lithium battery body are provided on the front side of the end cover.
[0008] A heat dissipation assembly is provided on the side wall of the transparent cylinder. The heat dissipation assembly includes an arc-shaped plate, a heat-conducting plate, a connecting plate, and heat dissipation fins. A heat-conducting plate arranged in a ring array is fixedly installed on the inner arc surface of the arc-shaped plate. A connecting plate is fixedly installed on the end of the heat-conducting plate away from the arc-shaped plate. The connecting plate is fixedly installed on the side wall of the maintenance-free lithium battery body. A heat dissipation fin arranged in a ring array is fixedly installed on the outer arc surface of the arc-shaped plate. The arc-shaped plate is fixedly installed on the arc surface of the transparent cylinder. A clearance groove is opened on the side wall of the transparent cylinder, which corresponds to the position and matches the specifications of the heat-conducting plate. The heat-conducting plate is movably fitted inside the clearance groove.
[0009] Preferably, the arc-shaped plate, heat-conducting plate, connecting plate, and heat dissipation fins are all made of heat-conducting materials. A sealing gasket is provided between the inner side of the arc-shaped plate and the surface of the transparent cylinder. The heat generated inside the maintenance-free lithium battery body is conducted to the heat-conducting plate through the connecting plate, and then the heat in the heat-conducting plate is conducted to the arc-shaped plate. Finally, the heat is dissipated to the external environment through the arc-shaped plate and the heat dissipation fins. The heat dissipation fins can increase the heat dissipation area. The sealing gasket provided between the inner side of the arc-shaped plate and the surface of the transparent cylinder can prevent air leakage from the transparent cylinder, thereby increasing the sealing performance inside the transparent cylinder.
[0010] Preferably, a connecting ring is fixedly fitted on the outer surface of the front end of the transparent cylinder, and the end cap is fitted onto the front end of the transparent cylinder and connected to the connecting ring by bolts and nuts. An annular sealing ring is provided between the contact surfaces of the end cap and the connecting ring. The connecting ring facilitates the installation of the end cap, and the annular sealing ring can increase the sealing performance of the contact surfaces between the end cap and the connecting ring, thereby increasing the sealing effect on the transparent cylinder.
[0011] Preferably, the front side of the end cap is also provided with an air extraction connector that communicates with the inner cavity of the transparent cylinder. The air extraction connector is equipped with a sealing valve. By connecting a vacuum device to the air extraction connector, the air inside the transparent cylinder can be extracted, and then the sealing valve can be closed to prevent air leakage.
[0012] This invention provides a maintenance-free rechargeable lithium battery. It has the following advantages:
[0013] This maintenance-free lithium battery, through the design of its heat dissipation components, can absorb the heat generated inside the battery body using a connecting plate and conduct it to an arc-shaped plate via a heat-conducting plate. The heat is then dissipated to the outside air through the arc-shaped plate and heat dissipation fins. The heat dissipation fins increase the heat dissipation area, thereby improving the heat dissipation efficiency of the maintenance-free lithium battery body. This achieves the purpose of conducting the heat inside the maintenance-free lithium battery body to the outside, avoiding the overheating and damage of the maintenance-free lithium battery body. It solves the problem in existing devices where, after the air inside the transparent tube is evacuated to create a vacuum, the heat generated inside the lithium battery is difficult to conduct to the outside, leading to the lithium battery being prone to overheating and damage. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model;
[0015] Figure 2 This is a schematic diagram of the transparent cylinder and heat dissipation assembly structure of this utility model;
[0016] Figure 3 This is a schematic diagram of the transparent tube structure of this utility model;
[0017] Figure 4 This is a schematic diagram of the heat dissipation component structure of this utility model.
[0018] In the diagram: 1. Transparent cylinder; 11. Relief groove; 2. Bottom cover; 3. End cover; 4. Connecting ring; 5. Positive terminal; 6. Negative terminal; 7. Vacuum connector; 8. Sealing valve; 9. Heat dissipation assembly; 91. Arc plate; 92. Heat conduction plate; 93. Connecting plate; 94. Heat dissipation fins; 10. Maintenance-free lithium battery body. Detailed Implementation
[0019] 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.
[0020] Example 1:
[0021] like Figure 1-4 As shown: It includes a transparent tube 1, a bottom cover 2, an end cover 3 and a maintenance-free lithium battery body 10. The bottom cover 2 is fixedly connected to the rear end of the transparent tube 1, and the end cover 3 is provided at the front end of the transparent tube 1. The maintenance-free lithium battery body 10 is provided inside the transparent tube 1, and the positive terminal 5 and the negative terminal 6 connected to the maintenance-free lithium battery body 10 are provided on the front side of the end cover 3.
[0022] A heat dissipation assembly 9 is provided on the side wall of the transparent cylinder 1. The heat dissipation assembly 9 includes an arc plate 91, a heat conduction plate 92, a connecting plate 93, and heat dissipation fins 94. A heat conduction plate 92 arranged in a ring array is fixedly installed on the inner arc surface of the arc plate 91. A connecting plate 93 is fixedly installed on the end of the heat conduction plate 92 away from the arc plate 91. The connecting plate 93 is fixedly installed on the side wall of the maintenance-free lithium battery body 10. A heat dissipation fins 94 arranged in a ring array are fixedly installed on the outer arc surface of the arc plate 91. The arc plate 91 is fixedly installed on the arc surface of the transparent cylinder 1. A clearance groove 11 is opened on the side wall of the transparent cylinder 1, which corresponds to the position of the heat conduction plate 92 and matches its specifications. The heat conduction plate 92 is movably fitted inside the clearance groove 11.
[0023] The heat dissipation component 9 allows the connecting plate 93 to absorb the heat generated inside the maintenance-free lithium battery body 10 and conduct it to the arc-shaped plate 91 via the heat-conducting plate 92. The heat is then dissipated to the outside air through the arc-shaped plate 91 and the heat dissipation fins 94. The heat dissipation fins 94 increase the heat dissipation area, thereby improving the heat dissipation efficiency of the maintenance-free lithium battery body 10. This achieves the purpose of conducting the heat inside the maintenance-free lithium battery body 10 to the outside, avoiding overheating and damage to the maintenance-free lithium battery body 10. It also solves the problem that in existing devices, after the air inside the transparent tube is evacuated to create a vacuum, the heat generated inside the lithium battery is difficult to conduct to the outside, leading to easy overheating and damage to the lithium battery.
[0024] Furthermore, the arc-shaped plate 91, the heat-conducting plate 92, the connecting plate 93, and the heat dissipation fins 94 are all made of heat-conducting materials. A sealing gasket is provided between the inner side of the arc-shaped plate 91 and the surface of the transparent cylinder 1. The heat generated inside the maintenance-free lithium battery body 10 is conducted to the heat-conducting plate 92 through the connecting plate 93, and then the heat in the heat-conducting plate 92 is conducted to the arc-shaped plate 91. Finally, the heat is dissipated to the external environment through the arc-shaped plate 91 and the heat dissipation fins 94. The heat dissipation fins 94 can increase the heat dissipation area. The sealing gasket provided between the inner side of the arc-shaped plate 91 and the surface of the transparent cylinder 1 can prevent the transparent cylinder 1 from leaking air, thereby increasing the sealing performance inside the transparent cylinder 1.
[0025] Furthermore, a connecting ring 4 is fixedly fitted on the outer surface of the front end of the transparent cylinder 1. The end cap 3 is fitted onto the front end of the transparent cylinder 1 and connected to the connecting ring 4 by bolts and nuts. An annular sealing ring is provided between the contact surfaces of the end cap 3 and the connecting ring 4. The connecting ring 4 facilitates the installation of the end cap 3, and the annular sealing ring can increase the sealing performance of the contact surfaces of the end cap 3 and the connecting ring 4, thereby increasing the sealing effect of the transparent cylinder 1.
[0026] Furthermore, the front side of the end cap 3 is also provided with an air extraction connector 7 that communicates with the inner cavity of the transparent cylinder 1. A sealing valve 8 is installed on the air extraction connector 7. By connecting a vacuum device to the air extraction connector 7, the air inside the transparent cylinder 1 can be extracted, and then the sealing valve 8 can be closed to prevent air leakage.
[0027] The working principle and usage process of this utility model: When using this maintenance-free lithium battery, connect the vacuum device to the air extraction connector 7 to extract the air from the inside of the transparent cylinder 1, then close the sealing valve 8, and then insert the special connector into the positive terminal 5 to complete the positive terminal connection. Then connect the special caliper sleeve to the negative terminal 6 to complete the negative terminal connection. Power can then be supplied through the maintenance-free lithium battery body 10. During this process, the heat generated inside the maintenance-free lithium battery body 10 is absorbed by the connecting plate 93 and conducted to the arc plate 91 through the heat conduction plate 92. Then the heat is dissipated to the outside air through the arc plate 91 and the heat dissipation fins 94.
[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A maintenance-free lithium battery, comprising a transparent tube (1), a bottom cover (2), an end cover (3) and a maintenance-free lithium battery body (10), wherein the bottom cover (2) is fixedly connected to the rear end of the transparent tube (1), the end cover (3) is provided at the front end of the transparent tube (1), the maintenance-free lithium battery body (10) is provided inside the transparent tube (1), and the positive terminal (5) and the negative terminal (6) connected to the maintenance-free lithium battery body (10) are provided on the front side of the end cover (3). characterized in that A heat dissipation assembly (9) is provided on the side wall of the transparent cylinder (1). The heat dissipation assembly (9) includes an arc plate (91), a heat-conducting plate (92), a connecting plate (93), and heat dissipation fins (94). A heat-conducting plate (92) in a ring array is fixedly installed on the inner arc surface of the arc plate (91). A connecting plate (93) is fixedly installed on the end of the heat-conducting plate (92) away from the arc plate (91). The connecting plate (93) is fixedly installed on the side wall of the maintenance-free lithium battery body (10). A heat dissipation fins (94) in a ring array are fixedly installed on the outer arc surface of the arc plate (91). The arc plate (91) is fixedly installed on the arc surface of the transparent cylinder (1). A clearance groove (11) corresponding to the position and matching the specifications of the heat-conducting plate (92) is opened on the side wall of the transparent cylinder (1). The heat-conducting plate (92) is movably fitted inside the clearance groove (11).
2. The maintenance-free lithium battery according to claim 1, characterized in that: The arc plate (91), heat-conducting plate (92), connecting plate (93) and heat dissipation fins (94) are all heat-conducting materials, and a sealing gasket is provided between the inner side of the arc plate (91) and the surface of the transparent cylinder (1).
3. The maintenance-free lithium battery according to claim 1, wherein: A connecting ring (4) is fixedly fitted on the outer surface of the front end of the transparent cylinder (1). The end cap (3) is fitted on the front end of the transparent cylinder (1) and connected to the connecting ring (4) by bolts and nuts. An annular sealing ring is provided between the contact surfaces of the end cap (3) and the connecting ring (4).
4. The maintenance-free lithium battery according to claim 1, wherein: The front side of the end cap (3) is also provided with an air extraction connector (7) that communicates with the inner cavity of the transparent cylinder (1), and a sealing valve (8) is installed on the air extraction connector (7).