A lithium battery and a battery assembly thereof

Abstract

The application provides a lithium battery and a battery assembly thereof, and relates to the technical field of lithium batteries, which comprises a top sleeve installed on a water cooling jacket, not less than twelve groups of coarse pipes and fine pipes with the same length are installed in the top sleeve, a sealing disc is coaxially installed at the joint of the coarse pipe and the fine pipe, a matching block corresponding to the coarse pipe is slidingly installed in the top sleeve, a pressurizing groove is formed in the matching block, the sealing disc is slidingly connected in the pressurizing groove, a circulation hole is formed in the matching block, and the circulation hole is respectively connected to the two ends of the pressurizing groove. The unique pressure adjusting structure is designed by the different diameters of the coarse pipe and the fine pipe, the sealing disc is accurately positioned, additional fixing pressure is automatically generated in the circulating process of the heat dissipation liquid, the fixing force can be increased with the increase of the heat generation of the battery, the stability of installation is ensured, and the use safety is improved.

Description

Technical Field

[0001] This invention relates to the field of lithium battery technology, and more specifically, to a lithium battery and its battery components. Background Technology

[0002] In today's rapidly developing field of electronic devices, cylindrical lithium batteries are widely used in various portable electronic devices, power tools, and new energy vehicles due to their advantages such as high energy density and long cycle life. However, these batteries face two key technical challenges in practical applications: first, a stable and reliable fixing mechanism is needed to ensure the battery's positional stability during device operation and prevent poor contact caused by vibration or impact; second, an efficient heat dissipation system is needed to maintain the battery's normal operating temperature and avoid performance degradation and safety hazards caused by overheating. These requirements place strict demands on the design of the battery mounting structure.

[0003] Currently, most cylindrical lithium battery mounting devices on the market suffer from inadequate design. Traditional mounting methods often employ single-function structures such as screw fastening or spring clamping, which not only makes the installation process cumbersome and time-consuming but also fails to simultaneously meet the dual requirements of fixing and heat dissipation. This is especially problematic in applications requiring frequent battery replacements, where the complex installation steps severely impact maintenance efficiency. Furthermore, the separate design of the heat dissipation and fixing structures results in a bulky overall structure with low space utilization. These issues significantly reduce the convenience of battery installation and negatively affect the overall user experience of the device. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] In view of the problems existing in the prior art, the present invention provides a lithium battery and its battery assembly to solve the technical problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a lithium battery and its battery assembly, comprising multiple water-cooling jackets fixedly installed; further comprising a fixing mechanism, the fixing mechanism comprising a top sleeve installed on the water-cooling jacket, the top sleeve having at least twelve sets of thick and thin tubes of the same length installed inside, and a sealing disc coaxially installed at the connection between the thick and thin tubes; a fitting block corresponding to the thick tube is slidably installed inside the top sleeve, the fitting block having a pressure groove, the sealing disc being slidably connected inside the pressure groove, and a circulation hole being opened inside the fitting block, the circulation hole being respectively connected to both ends of the pressure groove; further comprising a heat dissipation mechanism, the heat dissipation mechanism comprising a circulation groove opened inside the water-cooling jacket, the circulation groove having multiple spiral blades installed inside.

[0008] Preferably, the fixing mechanism further includes multiple upper holes on the thicker tube and multiple lower holes on the thinner tube, with the upper and lower holes respectively attached to both sides of the sealing disc, and both the upper and lower holes communicating within the pressure groove. This design, through the arrangement of the upper and lower holes and the isolation effect of the sealing disc, forms a unique pressure difference system, realizing the effective utilization of the heat dissipation fluid pressure and providing a basis for automatic adjustment of the fixing force.

[0009] Preferably, each of the plurality of thick tubes is fitted with a push spring, and the plurality of push springs abut against the upper end surface of the bonding block. Follower plates are installed on both sides of the bonding block. A plurality of shrinkage grooves are symmetrically opened at equal intervals inside the top sleeve. The follower plates are slidably connected in the shrinkage grooves. The push springs provide initial preload. Combined with the guiding effect of the follower plates and shrinkage grooves, the smoothness and reliability of the bonding block movement are ensured, and the stability of the fixing mechanism is improved.

[0010] Preferably, the top sleeve has an annular groove and multiple water inlet holes that communicate with the thick pipe, and the multiple water inlet holes are respectively connected in the annular groove. A water inlet pipe is installed on the upper end of the top sleeve, one end of the water inlet pipe is connected in the annular groove, and the other end of the water inlet pipe is connected to an external water supply device. This annularly distributed water inlet system design ensures the uniform distribution of cooling hydraulic pressure and improves the stability of system operation and cooling effect.

[0011] Preferably, multiple guide tubes are installed at equal intervals on the inner wall of the top sleeve, and a pull rope is installed on the upper end face of each of the bonding blocks. The multiple pull ropes are slidably connected inside the guide tubes and connected to the pull sleeve. The pull sleeve is slidably connected to the water inlet pipe, and the diameter of the pull sleeve is larger than that of the top sleeve. Through the cooperative design of the guide tubes and pull ropes, the synchronous control of the bonding blocks is realized, making the installation and disassembly operations more convenient and reliable.

[0012] Preferably, the battery body is slidably installed inside the top sleeve, and multiple bonding blocks are respectively bonded to the battery body. Each bonding block is equipped with a pressure plate, and the multiple pressure plates press on the battery body. This fixing design ensures the uniformity and stability of the battery body fixing through the combined action of the bonding blocks and pressure plates.

[0013] Preferably, the heat dissipation mechanism further includes multiple discharge holes formed on the top sleeve. One end of each discharge hole is connected to a thin tube, and the other end of each discharge hole is connected to a circulation tank. The design of multiple discharge holes achieves uniform distribution and rapid circulation of the heat dissipation fluid, thereby improving heat dissipation efficiency.

[0014] Preferably, multiple water outlet pipes are installed on the lower end face of the water cooling jacket, and the multiple water outlet pipes are respectively connected to the lower end of the circulation tank and connected to an external water supply device. This water outlet system design ensures the rapid discharge and circulation of the heat dissipation fluid, and improves the working efficiency of the heat dissipation system.

[0015] Preferably, the battery body is electrically connected to an external device. Through a reliable electrical connection design, a stable power supply is ensured during use, thereby improving the reliability of the entire system.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, the present invention provides a lithium battery and its battery assembly, which has the following beneficial effects:

[0018] This lithium battery and its battery components achieve effective technical results through innovative structural design: the combination of top sleeve and bonding block, and the linkage mechanism of pull sleeve and pull rope, enables quick installation and removal of the battery; the unique pressure adjustment structure, through the differential diameter design of thick and thin tubes, combined with the precise positioning of the sealing plate, automatically generates additional fixing pressure during the circulation of the coolant, so that the fixing force can be increased by the heat generated by the battery, which not only ensures the stability of the installation, but also improves the safety of use.

[0019] The spiral blade design inside the water-cooling jacket significantly increases the contact time and area between the coolant and the battery surface, improving heat dissipation efficiency. The circulation tank design ensures uniform distribution of the coolant, avoiding localized overheating. The water inlet system uses an annular groove combined with multiple inlet holes to ensure uniform distribution of hydraulic pressure. The drainage system, through the arrangement of multiple outlet pipes, achieves rapid circulation of the coolant. The innovation of the entire device lies in combining the fixing mechanism and the heat dissipation mechanism, using hydraulic principles to adjust the fixing force, while resolving the contradiction between installation convenience and heat dissipation effect in traditional battery fixing devices. This design not only improves battery life and safety but also effectively enhances installation and maintenance efficiency, providing a more reliable and efficient solution for lithium battery applications. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a lithium battery and its battery assembly according to the present invention;

[0021] Figure 2 This is a cross-sectional view of a lithium battery and its battery assembly according to the present invention.

[0022] Figure 3 This is a cross-sectional view of the top sleeve and the pull sleeve in this invention;

[0023] Figure 4 This is a cross-sectional view of the top sleeve and the bonding block in this invention.

[0024] Figure 5 This is a cross-sectional view of the top sleeve in this invention;

[0025] Figure 6 This is a cross-sectional view of the bonding block in this invention;

[0026] Figure 7 This is a schematic diagram of the top sleeve and water inlet pipe in this invention;

[0027] Figure 8 This is a schematic diagram of the structure of the pull sleeve, pull rope, and bonding block in this invention.

[0028] In the diagram: 11. Water cooling jacket; 21. Top sleeve; 22. Thick tube; 23. Thin tube; 24. Sealing disc; 25. Adhesive block; 26. Pressurization groove; 27. Circulation hole; 28. Upper hole; 29. ​​Lower hole; 31. Circulation groove; 32. Spiral blade; 33. Discharge hole; 34. Water outlet pipe; 210. Push spring; 211. Follower plate; 212. Contraction groove; 213. Annular groove; 214. Water inlet hole; 215. Water inlet pipe; 216. Guide tube; 217. Pull rope; 218. Pull sleeve; 219. Battery body; 220. Pressure plate. Detailed Implementation

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0031] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0032] Please see Figures 1 to 8A lithium battery and its battery assembly include multiple water-cooling jackets 11 fixedly installed; and a fixing mechanism, the fixing mechanism including a top sleeve 21 installed on the water-cooling jackets 11, the top sleeve 21 having at least twelve sets of thick tubes 22 and thin tubes 23 of the same length installed inside, and a sealing disc 24 coaxially installed at the connection between the thick tubes 22 and the thin tubes 23; a fitting block 25 corresponding to the thick tubes 22 is slidably installed inside the top sleeve 21, the fitting block 25 having a pressure groove 26, the sealing disc 24 being slidably connected in the pressure groove 26, and the fitting block 25 having a pressure groove 26. The circulation holes 27 are respectively connected to both ends of the pressure groove 26. The fixing mechanism also includes multiple upper holes 28 opened on the thick tube 22 and multiple lower holes 29 opened on the thin tube 23. The multiple upper holes 28 and multiple lower holes 29 are respectively attached to both sides of the sealing plate 24, and the multiple upper holes 28 and multiple lower holes 29 are all connected to the pressure groove 26. Push springs 210 are respectively sleeved in the multiple thick tubes 22, and the multiple push springs 210 respectively abut against the upper end surface of the bonding block 25. The bonding block 25 is equipped with a sliding door on both sides. The movable plate 211 has multiple symmetrically spaced contraction grooves 212 inside the top sleeve 21, which slide along the movable plate 211. The top sleeve 21 has an annular groove 213 and multiple water inlet holes 214 communicating with the thick pipe 22, and the multiple water inlet holes 214 are respectively connected to the annular groove 213. A water inlet pipe 215 is installed at the upper end of the top sleeve 21, one end of the water inlet pipe 215 is connected to the annular groove 213, and the other end of the water inlet pipe 215 is connected to an external water supply device. Multiple guide pipes 21 are installed at equal intervals on the inner wall of the top sleeve 21. 6. Each bonding block 25 has a pull rope 217 installed on its upper end face. Multiple pull ropes 217 are slidably connected to the guide tube 216. Multiple pull ropes 217 are connected to the pull sleeve 218. The pull sleeve 218 is slidably connected to the water inlet pipe 215. The diameter of the pull sleeve 218 is larger than that of the top sleeve 21. The battery body 219 is slidably installed in the top sleeve 21. Multiple bonding blocks 25 are bonded to the battery body 219. Each bonding block 25 has a pressure plate 220 installed on it. Multiple pressure plates 220 press on the battery body 219.

[0033] Before securing the corresponding battery body 219, please refer to Figure 3First, pull the sleeve 218 upwards. Since the sleeve 218 is slidably connected to the water inlet pipe 215, it will slide vertically upwards. Multiple pull ropes 217 are connected to multiple bonding blocks 25 respectively, which will drive the follower plate 211 on the bonding block 25 to slide along the shrinkage groove 212. At this time, multiple push springs 210 are compressed, and multiple bonding blocks 25 and pressure plates 220 expand along the axis. Therefore, the distance between multiple pressure plates 220 becomes larger and larger. Then, insert the corresponding battery body 219 into the top sleeve 21 and move it downwards so that the battery body 219 is electrically connected to the external device. Then, release the sleeve 218. Under the action of the push spring 210, multiple bonding blocks 25 will shrink and move downwards. Then, multiple pressure plates 220 will shrink to the upper end of the battery body 219 and press on the battery body 219, thus applying corresponding pressure to the battery body 219 and ensuring the pre-fixation process.

[0034] After the battery body 219 is pre-fixed, when the battery body 219 needs to dissipate heat during use, pressurized coolant is first introduced into the inlet pipe 215 through an external device. Then, the coolant flows through the inlet pipe 215 into the annular groove 213. Since multiple inlet holes 214 are connected to the annular groove 213 and the thick pipes 22 respectively, the pressurized coolant flows into the multiple thick pipes 22. Please refer to [link / reference needed]. Figure 4Since the thick pipe 22 and the thin pipe 23 are separated by a sealing disc 24, they are not connected. The coolant then flows through the upper hole 28 into the space between the sealing disc 24, the thick pipe 22, and the pressure tank 26, creating pressure on this space. The area of ​​this pressure is the area of ​​the sealing disc 24 minus the area of ​​the outer diameter of the thick pipe 22, denoted as s1. As the coolant fills the upper space, it flows to the upper end of the circulation hole 27 and then through the circulation hole 27 into the lower space, which is the space between the pressure tank 26, the sealing disc 24, and the thin pipe 23, filling this space. The area of ​​this pressure is the area of ​​the sealing disc 24 minus the area of ​​the outer diameter of the thin pipe 23, denoted as s2. Finally, the coolant flows through the lower hole 29 into the thin pipe 23. The water-cooling jacket 11 dissipates heat and then discharges the water through the outlet pipe 34 to the external equipment for a circulation process. The diameter of the thick pipe 22 is much larger than that of the thin pipe 23, and the area of ​​s2 is larger than that of s1. Therefore, the total force and kinetic energy generated by the water pressure in the lower space are greater than those in the upper space. As a result, the bonding block 25 will slide down along the thick pipe 22 and the thin pipe 23. Since the pressure plate 220 presses on the battery body 219, it will also apply additional fixing force to the battery body 219 while dissipating heat. When the battery body 219 generates a lot of heat, the current is large and more stable fixation is required. The additional downward pressure makes the battery body 219 generate a lot of heat while being more stably fixed, thus ensuring the safety of use and improving the overall safety.

[0035] When it is necessary to remove the battery body 219, the coolant stops circulating and therefore does not generate downward pressure. Then, pulling the pull sleeve 218 upward causes the multiple pressure plates 220 to expand, thereby releasing the pre-tightening force on the battery body 219, so that the battery can be removed, completing the disassembly process.

[0036] The heat dissipation mechanism includes a circulation groove 31 opened in the water cooling jacket 11, and a plurality of spiral blades 32 are installed in the circulation groove 31. The heat dissipation mechanism also includes a plurality of discharge holes 33 opened on the top sleeve 21. One end of the plurality of discharge holes 33 is connected to the thin tube 23, and the other end of the plurality of discharge holes 33 is connected to the circulation groove 31. A plurality of water outlet pipes 34 are installed on the lower end surface of the water cooling jacket 11, and the plurality of water outlet pipes 34 are respectively connected to the lower end of the circulation groove 31 and connected to an external water supply device. The battery body 219 is electrically connected to an external device.

[0037] Please see Figure 3 and Figure 4When the coolant flows into the thin tube 23, since the discharge hole 33 is connected to the thin tube 23 and the circulation tank 31, the coolant discharged from multiple thin tubes 23 will flow into the circulation tank 31. The circulation tank 31 has multiple spiral blades 32, and the coolant will increase the cooling time of the battery body 219 along the spiral blades 32, thus ensuring the cooling effect of the battery body 219. Then the coolant flows into the lower end of the circulation tank 31 and is discharged to the external equipment through the outlet pipe 34, thus completing a cycle.

[0038] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lithium battery and its battery assembly, comprising a plurality of water-cooling jackets (11) fixedly installed, wherein a battery body (219) is installed inside the water-cooling jackets (11); characterized in that: It also includes a fixing mechanism, which includes a top sleeve (21) installed on the water-cooling jacket (11). The top sleeve (21) contains at least twelve sets of thick tubes (22) and thin tubes (23) of the same length. A sealing disc (24) is coaxially installed at the connection between the thick tubes (22) and thin tubes (23). A fitting block (25) corresponding to the thick tube (22) is slidably installed inside the top sleeve (21). A pressure groove (26) is formed inside the fitting block (25). The sealing disc (24) is slidably connected to the fitting block. Within the pressurizing groove (26), a circulation hole (27) is provided in the fitting block (25), and the circulation hole (27) is respectively connected to both ends of the pressurizing groove (26); it also includes a heat dissipation mechanism, which includes a circulation groove (31) opened in the water cooling jacket (11), and a plurality of spiral blades (32) are installed in the circulation groove (31). The fixing mechanism also includes a plurality of upper holes (28) opened on the thick tube (22) and a plurality of lower holes (29) opened on the thin tube (23), and the plurality of upper holes (28) are connected to the fitting block (25). The upper hole (28) and the plurality of lower holes (29) are respectively attached to both sides of the sealing disc (24), and the plurality of upper holes (28) and the plurality of lower holes (29) are all connected in the pressure groove (26). The plurality of thick tubes (22) are respectively fitted with push springs (210), and the plurality of push springs (210) respectively abut against the upper end surface of the bonding block (25). The bonding block (25) is equipped with follower plates (211) on both sides. The top sleeve (21) is symmetrically provided with multiple receiving holes at equal intervals. Shrinking groove (212), the follower plate (211) is slidably connected in the shrinking groove (212), the top sleeve (21) is provided with an annular groove (213) and a plurality of water inlet holes (214) communicating with the thick pipe (22), and the plurality of water inlet holes (214) are respectively connected in the annular groove (213). A water inlet pipe (215) is installed on the upper end of the top sleeve (21), one end of the water inlet pipe (215) is connected in the annular groove (213), and the other end of the water inlet pipe (215) is connected to an external water supply device.

2. A lithium battery and its battery assembly according to claim 1, characterized in that: Multiple guide tubes (216) are installed at equal intervals on the inner wall of the top sleeve (21). Each of the fitting blocks (25) has a pull rope (217) installed on its upper end face. The multiple pull ropes (217) are slidably connected inside the guide tubes (216). The multiple pull ropes (217) are connected to the pull sleeve (218). The pull sleeve (218) is slidably connected to the water inlet pipe (215), and the diameter of the pull sleeve (218) is larger than that of the top sleeve (21).

3. A lithium battery and its battery assembly according to claim 2, characterized in that: The battery body (219) is slidably installed inside the top sleeve (21), and multiple bonding blocks (25) are respectively bonded to the battery body (219). Each bonding block (25) is equipped with a pressure plate (220), and the multiple pressure plates (220) are respectively pressed on the battery body (219).

4. A lithium battery and its battery assembly according to claim 1, characterized in that: The heat dissipation mechanism also includes a plurality of discharge holes (33) opened on the top sleeve (21), one end of the plurality of discharge holes (33) being connected to the thin tube (23), and the other end of the plurality of discharge holes (33) being connected to the circulation groove (31).

5. A lithium battery and its battery assembly according to claim 4, characterized in that: Multiple water outlet pipes (34) are installed on the lower end face of the water cooling jacket (11), and the multiple water outlet pipes (34) are respectively connected to the lower end of the circulation tank (31), and the multiple water outlet pipes (34) are connected to an external water supply device.

6. A lithium battery and its battery assembly according to claim 1, characterized in that: The battery body (219) is electrically connected to an external device.

7. A lithium battery and its battery assembly according to claim 6, characterized in that: The battery body (219) is equipped with a charging port (221) and a safety valve (222), and a diaphragm roll (223) is provided at the lower end of the safety valve (222).

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