Lithium battery pack terminal

Abstract

The invention relates to the technical field of battery packs, and particularly discloses a lithium battery pack terminal which comprises a shell, a top cover and a lithium battery pack, the top end of the shell is fixedly connected with the top cover, an inner cavity of the top cover is slidably connected with a buffer plate, a terminal assembly is arranged in an inner cavity of the buffer plate, and buffer assemblies are arranged at the two ends of the buffer plate; by means of the terminal assembly and the buffer assembly, the terminal and the lithium battery pack can be kept flexibly fixed during installation, so that when the lithium battery pack shakes in the using process, various shakes and dragging force can be dealt with, meanwhile, an alarm can be given out in time when the shake floating is too large, a worker is reminded to conduct maintenance, and the maintenance efficiency is improved. The terminals are temporarily fixed, large abrasion of cables between the terminals caused by continuous large-amplitude shaking is prevented, ventilation and heat dissipation can be conducted in time through the protection assembly when the lithium battery pack is heated to expand, and fire or explosion caused by stable and continuous rising of the lithium battery pack is prevented.

Description

Technical Field

[0001] This application relates to the field of battery pack technology, and more particularly to a lithium battery pack terminal. Background Technology

[0002] Lithium-ion battery packs, with their high energy density, long cycle life, and environmentally friendly characteristics, have become the core power source for electric vehicles, energy storage systems, portable electronic devices, and other fields. Among these components, the terminals act as a bridge connecting the lithium-ion battery pack to external circuits. These terminals are conductive components that electrically connect the lithium-ion battery to external circuits, playing a crucial bridging role in the lithium-ion battery system to ensure normal charging and discharging and efficient energy transfer. However, traditional lithium-ion battery pack terminals have many limitations in structure and function, making it difficult to meet the stringent requirements of complex application scenarios.

[0003] The existing technology still has the following problems: 1. Existing lithium battery pack terminals are fixed to the lithium battery casing using bolts or welding. When the battery shakes, the terminals are subjected to inertial forces, resulting in a relative movement tendency. Over time, this may cause cracks or even breakage between the terminals and the casing. For bolted terminals, shaking may reduce the friction between the bolts and threads, causing the bolts to gradually loosen and affecting the stability of the connection. In addition, long-term shaking may cause the wires to loosen or even fall off the terminals. This will not only interrupt current transmission but may also cause damage to the wires or displacement of the lithium battery, thus affecting the normal operation of the battery pack. Furthermore, it is difficult to detect large-amplitude shaking in time, and significant wear between devices will affect the overall service life of the lithium battery pack.

[0004] 2. Existing lithium battery packs have poor terminal protection capabilities. When connected to an external power source, the gap size of the connection cannot be adjusted, allowing dust to easily enter the connection points of the terminals and cables. In addition, after the terminals and lithium battery pack are connected, the entire battery pack is relatively sealed under the casing, making it difficult to dissipate heat. When the battery is heated during use, it is prone to expansion. If the heat cannot be effectively dissipated, the battery temperature will continue to rise. When the battery temperature rises to a certain level, it may cause thermal runaway, which will lead to a sharp increase in the internal temperature of the battery, affecting the normal operation of the battery, and may even cause the battery to catch fire or explode. Summary of the Invention

[0005] To overcome the shortcomings of lithium battery pack terminals, which are typically fixed to the battery casing using bolts or welding, this invention provides a lithium battery pack terminal that addresses these deficiencies. These deficiencies include the inertial force exerted on the terminals when the battery is shaken, leading to relative motion and potential cracks or even breakage between the terminals and the casing over time; the reduced friction between the bolts and threads due to shaking, causing the bolts to loosen and affecting connection stability; the potential for wires to loosen or detach from the terminals, interrupting current transmission and causing wire damage or battery displacement; the poor protection of lithium battery pack terminals, the inability to adjust the gap when connected to an external power source, allowing dust to easily enter the connection between the terminals and cables; and the relatively sealed, poorly heat-dissipating design of the battery pack under the casing after connection.

[0006] This application provides a lithium battery pack terminal, including a housing, a top cover, and a lithium battery pack. The top cover is fixedly connected to the top of the housing, and a buffer plate is slidably connected to the inner cavity of the top cover. A terminal assembly is disposed in the inner cavity of the buffer plate, buffer assemblies are disposed at both ends of the buffer plate, and a protective assembly is disposed in the inner cavity of the buffer plate. The lithium battery pack is fixedly installed on the inner wall of the housing, and a connecting groove is formed on the outer surface of the buffer plate. The terminal assembly includes a terminal body, a limit mechanism is slidably connected to the inner cavity of the terminal body, a connecting wire is fixedly connected to one end of the terminal body, and a clamping mechanism is disposed on the outer surface of the terminal body. There are two buffer plates in the inner cavity of the top cover, and each buffer plate has four terminal assemblies. The terminal body is located in the middle part of the inner cavity of the connecting groove, and the end of the connecting wire away from the terminal body is electrically connected to the lithium battery pack.

[0007] Furthermore, the limiting mechanism includes a first slide rod, which is fixedly connected to the outer surface of the terminal body. A first spring is sleeved on the outer surface of the first slide rod, and a washer is slidably connected to the outer surface of the first slide rod. The first spring is located between the terminal body and the washer. A limiting ring is fixedly installed on the lower surface of the buffer plate. A groove is formed on the outer surface of the limiting ring. The first slide rod is slidably connected to the groove. The washer is slidably connected to the inner wall of the limiting ring. The diameter of the circular outer surface of the terminal body at the first slide rod is larger than the diameter of the connecting groove, and the circular outer surface is slidably connected to the lower surface of the buffer plate.

[0008] Furthermore, the clamping mechanism includes a limiting block, with a plug rotatably connected to the outer surface of the limiting block via a thread. An adjusting ring is rotatably connected to the inner cavity of the limiting block. A groove is formed on the outer surface of the adjusting ring, through which the plug passes and engages. A drive groove is formed on the outer surface of the adjusting ring, with the drive grooves distributed obliquely from the outside to the inside on the adjusting ring. Limiting strips are fixedly installed at the four corners of the outer surface of the limiting block. Clamping blocks are slidably connected to the outer surface of the limiting strips. A drive rod is fixedly connected to the bottom end of the clamping blocks, with the drive groove and drive rod slidably connected. A spring rod is slidably connected to the inner cavity of the limiting block. A second spring is sleeved on the outer surface of the spring rod, located at the inner diameter of the spring rod and the limiting block. The spring rod is fixedly connected to the outer surface of the terminal body. The clamping block and the connecting wire are in close contact, with the connecting wire passing through the middle part of the limiting block. The connecting wires on both sides of the limiting block are in a bent state.

[0009] Furthermore, the buffer assembly includes a buffer frame, with baffles fixedly installed on the inner walls of both ends of the buffer frame, a second slide rod slidably connected to the inner cavity of the baffle, a third spring sleeved on the outer surface of the second slide rod, a positioning block fixedly installed on the bottom outer surface of the buffer frame, positioning grooves opened on the upper and lower outer surfaces of the positioning block, an alarm mechanism fixedly installed on the lower surface of the buffer plate, and buffer blocks fixedly installed at both ends of the buffer plate.

[0010] Furthermore, the buffer block is located in the middle of the two baffles, the buffer block and the second slide rod are fixedly connected, the third spring is located on both sides of the buffer block, the buffer block and the buffer frame are slidably connected, the buffer frame and the inner wall of the top cover are fixedly connected, and there is a gap between the buffer frame and the top inner wall of the top cover, and the buffer plate and the buffer frame are slidably connected.

[0011] Furthermore, the alarm mechanism includes an alarm block, a fixing strip is fixedly installed on the outer surface of the alarm block, a positioning rod is slidably connected to the inner cavity of the alarm block, a fourth spring is sleeved on one end of the positioning rod, a pressure block is fixedly installed on the outer surface of the positioning rod, a button is provided on the outer surface of the alarm block, and an alarm is fixedly installed on the outer surface of the alarm block.

[0012] Furthermore, the fourth spring is located between the inner walls of the pressure block and the alarm block, the pressure block and the alarm block are slidably connected, the button and the alarm are electrically connected, pressing the button controls the alarm to be emitted, the fixing strip and the lower surface of the buffer plate are fixedly connected, the positioning rod and the outer surface of the positioning block are in close contact, and the positioning rod is located in the middle of the two positioning grooves. When the positioning rod and the outer surface of the positioning block are in contact, there is a gap between the pressure block and the button.

[0013] Furthermore, the protective component includes a protective shell, a sealing ring with a diameter larger than the upper diameter of the terminal body, a sliding sleeve slidably connected to the inner cavity of the protective shell, and a connecting hole with different sizes on the outer surface of the sliding sleeve, the diameter of which decreases clockwise around the middle of the sliding sleeve, the distance from the center of the connecting hole to the middle of the sliding sleeve being equal, a shielding ring rotatably connected to the upper surface of the sliding sleeve, and a connecting opening with the same size as the largest connecting hole on the upper surface of the shielding ring, the bottom of the protective shell being fixedly connected to the upper surface of the buffer plate, and a ventilation mechanism being provided on the lower surface of the protective shell.

[0014] Furthermore, the ventilation mechanism includes a connecting ring, a connecting rod fixedly installed on the upper surface of the connecting ring, a ventilation hole at the top of the connecting rod, a ventilation groove in the middle of the connecting rod, a fifth spring sleeved on the outer surface of the connecting rod, and a dustproof cylinder fixedly installed in the middle of the connecting rod.

[0015] Furthermore, the fifth spring is located between the dust cover and the lower surface of the buffer plate, the connecting ring and the outer surface of the lithium battery pack are tightly fitted, the connecting rod passes through the inner cavity of the buffer plate, and the connecting rod and the protective shell are slidably connected.

[0016] The technical solution provided in this application has at least the following technical effects or advantages: 1. By employing terminal assemblies and buffer assemblies, this design effectively solves the problem that existing lithium battery packs use bolts or welding to fix the terminals to the battery casing. When the battery shakes, the terminals are subjected to inertial forces, resulting in relative movement. Over time, this can lead to cracks or even breakage between the terminals and the casing. For bolted connections, shaking can reduce the friction between the bolts and threads, causing the bolts to gradually loosen and affecting the stability of the connection. Furthermore, prolonged shaking can cause wires to loosen or even detach from the terminals. This not only interrupts current transmission but may also damage the wires or cause the lithium battery to shift, thus affecting the normal operation of the battery pack. Moreover, this design is particularly effective during significant shaking. The inability to detect vibrations in time, and the resulting significant wear between devices, affect the overall lifespan of the lithium battery pack. This invention, through terminal and buffer components, enables the terminals to be flexibly fixed to the lithium battery pack during installation. This allows it to cope with various shaking and dragging forces during the use of the lithium battery pack. The flexible connection can quickly respond and absorb vibration energy, thereby reducing the impact of shaking on the overall stability of the system and preventing safety accidents caused by the breakage of cables connecting the terminals. At the same time, it can promptly issue an alarm when the shaking is too large, reminding staff to perform maintenance, and temporarily fix the terminals to prevent continuous large-amplitude shaking from causing significant wear to the cables between the terminals.

[0017] 2. By employing protective components, this invention effectively solves the problems of poor terminal protection in existing lithium battery packs. The inability to adjust the gap size when connecting to an external power source allows dust to easily enter the connection points between the terminals and cables. Furthermore, the relatively sealed battery pack, encased in a shell, hinders heat dissipation after connection. During use, the battery expands when heated, and if heat cannot be effectively dissipated, the battery temperature will continue to rise. When the temperature reaches a certain level, it may trigger thermal runaway, causing a rapid increase in internal temperature, affecting normal battery operation, and potentially leading to fire or explosion. This invention, through its protective components, allows for the selection of appropriate apertures based on the specifications of the external cables, preventing contamination of the terminals. Simultaneously, it provides timely ventilation and heat dissipation when the lithium battery pack expands due to heat, preventing a sustained increase in temperature that could lead to fire or explosion. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure in the embodiments of this application; Figure 2 This is a schematic cross-sectional view of the top cover structure in an embodiment of this application; Figure 3 This is a schematic diagram of the buffer plate structure in an embodiment of this application; Figure 4 This is a schematic diagram of the terminal assembly structure in an embodiment of this application; Figure 5 This is a schematic diagram of the connecting slot structure in an embodiment of this application; Figure 6 This is a schematic diagram of the limiting mechanism structure in the embodiments of this application; Figure 7 This is a schematic diagram of the clamping mechanism structure in the embodiments of this application; Figure 8 This is a schematic cross-sectional view of the limiting block structure in an embodiment of this application; Figure 9 This is a schematic diagram of the buffer component structure in an embodiment of this application; Figure 10 This is a schematic cross-sectional view of the alarm mechanism structure in the embodiments of this application; Figure 11 This is a schematic diagram of the protective shell structure in the embodiments of this application; Figure 12 This is a schematic cross-sectional view of the protective component in an embodiment of this application; Figure 13 This is a schematic diagram of the connecting rod structure in an embodiment of this application.

[0019] In the diagram: 1. Outer shell; 2. Top cover; 3. Buffer plate; 4. Terminal assembly; 41. Terminal body; 42. Limiting mechanism; 421. First slide rod; 422. First spring; 423. Washer; 424. Limiting ring; 425. Slide groove; 43. Connecting wire; 44. Clamping mechanism; 441. Limiting block; 442. Plug; 443. Adjusting ring; 444. Drive groove; 445. Limiting strip; 446. Clamping block; 447. Spring rod; 448. Second spring; 5. Buffer assembly; 51. Buffer frame; 52. Baffle; 53. Second slide rod; 54. Third spring; 55. 56. Positioning block; 57. Positioning groove; 58. Alarm mechanism; 591. Alarm block; 502. Fixing strip; 513. Positioning rod; 524. Fourth spring; 535. Pressure block; 546. Button; 557. Alarm; 56. Buffer block; 67. Protective components; 61. Protective shell; 62. Sealing ring; 63. Sliding sleeve; 64. Connecting hole; 65. Shielding ring; 66. Connecting port; 67. Ventilation mechanism; 671. Connecting ring; 672. Connecting rod; 673. Ventilation hole; 674. Ventilation groove; 675. Fifth spring; 676. Dustproof cylinder; 7. Lithium battery pack; 8. Connecting groove. Detailed Implementation

[0020] To address the issue that prolonged shaking could cause wires to loosen or even detach from the terminals, this invention utilizes terminal and buffer components to ensure flexible fixation of the terminals to the lithium battery pack during installation. This allows the system to handle various shaking and dragging forces that occur during the use of the lithium battery pack. Furthermore, to prevent the battery from expanding due to heat during use, and the resulting continuous rise in battery temperature if the heat cannot be effectively dissipated, this invention employs protective components to provide timely ventilation and heat dissipation when the lithium battery pack expands due to heat, preventing a sustained and stable increase in temperature that could lead to fire or explosion.

[0021] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0022] Please see Figure 1 , Figure 2 and Figure 5As shown, a lithium battery pack terminal includes a housing 1, a top cover 2, and a lithium battery pack 7. The top cover 2 is fixedly connected to the top of the housing 1. A buffer plate 3 is slidably connected to the inner cavity of the top cover 2. A terminal assembly 4 is disposed in the inner cavity of the buffer plate 3. Buffer assemblies 5 are disposed at both ends of the buffer plate 3. A protective assembly 6 is disposed in the inner cavity of the buffer plate 3. The lithium battery pack 7 is fixedly installed on the inner wall of the housing 1. A connecting groove 8 is formed on the outer surface of the buffer plate 3, allowing the terminal assembly 4 to slide within the inner cavity of the connecting groove 8. That is, the terminal assembly 4 and the equipment are flexibly connected, preventing cracks or even breakage between the terminal assembly 4 and the equipment as a whole when the equipment shakes. The bolts loosening due to shaking are protected by the buffer assembly 5, which protects the terminal assembly 4 and reduces the entry of dust during external connections. At the same time, it can increase ventilation and reduce the temperature of the lithium battery pack 7 when it expands due to heat. The terminal assembly 4 can slide on the buffer plate 3 and the buffer plate 3 is flexibly fixed on the top cover 2. Thus, when the outer shell 1 shakes, the flexible connection has good flexibility and can absorb and buffer vibration and impact energy, thereby maintaining relative stability between the terminal assembly 4 and the lithium battery pack 7, preventing the buffer plate 3 from breaking and the terminal assembly 4 from falling off the external wiring.

[0023] Please see Figure 4 and Figure 5 As shown, the terminal assembly 4 includes a terminal body 41. A limiting mechanism 42 is slidably connected to the inner cavity of the terminal body 41. A connecting wire 43 is fixedly connected to one end of the terminal body 41. A clamping mechanism 44 is provided on the outer surface of the terminal body 41. The inner cavity of the top cover 2 has two buffer plates 3, and each buffer plate 3 has four terminal assemblies 4. The terminal body 41 is located in the middle part of the inner cavity of the connecting groove 8. The end of the connecting wire 43 away from the terminal body 41 is electrically connected to the lithium battery pack 7. The terminal body 41 is flexibly fixed on the buffer plate 3 by the limiting mechanism 42. The clamping mechanism 44 is used to limit the connecting wire 43 and prevent the connecting wire 43 from being dragged between the terminal body 41 and the lithium battery pack 7. That is, when the outer shell 1 shakes, the connecting wire 43 will not be pulled between the lithium battery pack 7 and the terminal body 41 due to the shaking of the outer shell 1, preventing the connecting wire 43 from falling off at the end of the terminal body 41 or breaking due to the pulling force.

[0024] Please see Figure 6 , Figure 7 and Figure 8As shown, the limiting mechanism 42 includes a first slide rod 421, which is fixedly connected to the outer surface of the terminal body 41. A first spring 422 is sleeved on the outer surface of the first slide rod 421, and a washer 423 is slidably connected to the outer surface of the first slide rod 421. The first spring 422 is located between the terminal body 41 and the washer 423. A limiting ring 424 is fixedly installed on the lower surface of the buffer plate 3. A groove 425 is formed on the outer surface of the limiting ring 424. The first slide rod 421 is slidably connected to the groove 425. The washer 423 is slidably connected to the inner wall of the limiting ring 424. The diameter of the circular outer surface of the terminal body 41 at the first slide rod 421 is larger than the diameter of the connecting groove 8, and the circular outer surface is slidably connected to the lower surface of the buffer plate 3. The clamping mechanism 44 includes a limiting ring. Block 441, the outer surface of the limiting block 441 is rotatably connected to the plug 442 by a thread, the inner cavity of the limiting block 441 is rotatably connected to the adjusting ring 443, the outer surface of the adjusting ring 443 has a groove, the plug 442 passes through the groove of the limiting block 441 and the adjusting ring 443 and is inserted, the outer surface of the adjusting ring 443 has a drive groove 444, the drive groove 444 is inclined from the outside to the inside on the adjusting ring 443, the four corners of the outer surface of the limiting block 441 are fixedly installed with limiting strips 445, the outer surface of the limiting strips 445 is slidably connected to the clamping block 446, the bottom end of the clamping block 446 is fixedly connected to the drive rod, the drive groove 444 and the drive rod are slidably connected, the inner cavity of the limiting block 441 is slidably connected to the elastic rod 447, the outer surface of the elastic rod 447 is sleeved A second spring 448 is connected, located on the inner wall diameter of the elastic rod 447 and the limiting block 441. The elastic rod 447 is fixedly connected to the outer surface of the terminal body 41. The clamping block 446 is in close contact with the connecting wire 43, and the connecting wire 43 passes through the middle part of the limiting block 441. The connecting wires 43 on both sides of the limiting block 441 are in a bent state. When the terminal body 41 is shaken and pulled by the external wiring, the terminal body 41 will slide on the outer surface of the buffer plate 3 under the action of the pulling force. That is, the upper end of the terminal body 41 floats in the inner cavity of the connecting groove 8. The sliding of the terminal body 41 drives the first sliding rod 421 to slide in the sliding groove 425 on the limiting ring 424. At this time, the first spring 422 is compressed by force. Under the elastic force of the first spring 422, the first spring 422... A sliding rod 421 quickly returns to its original position, ensuring that it will not pull on the external wiring during shaking, but rather that the wiring will detach from the terminal body 41. The connecting wire 43 is bent on both sides of the limiting block 441 to ensure that the terminal body 41 will not exert a pulling force on the buffer plate 3 when sliding on the outer surface of the buffer plate 3, thus ensuring the stability of the terminal body 41 when connected to the lithium battery pack 7 and protecting the internal and external wiring of the terminal body 41. By rotating the plug 442, the plug 442 and the groove on the outer surface of the adjusting ring 443 are disengaged and engaged. At this time, rotating the adjusting ring 443 causes the adjusting ring 443 to rotate in the inner cavity of the limiting block 441. The rotation of the adjusting ring 443 drives the drive groove 444 to move, and the movement of the drive groove 444 drives the drive rod at the lower end of the clamping block 446 to move.This movement of the drive groove 444 causes the clamping blocks 446 to slide on the limiting strip 445. The spacing between the clamping blocks 446 can be adjusted according to the thickness of the connecting wire 43, ensuring that the connecting wire 43 remains stable between the connecting terminal body 41 and the lithium battery pack 7, preventing wire tangling during shaking. When the wire reaches the appropriate position, the plug 442 is rotated to stabilize the adjusting ring 443 and the limiting block 441, thus maintaining a stable grip on the connecting wire 43 by the clamping blocks 446. When the lithium battery pack 7 shakes and drags the connecting wire 43, The bending of the limiting block 441 on both sides can counteract the impact of shaking on the lithium battery pack 7 and the terminal body 41. Simultaneously, the elastic rod 447 and the limiting block 441 are flexibly connected by the second spring 448. Even if the connecting wire 43 on the lithium battery pack 7 moves the limiting block 441, the limiting block 441 slides on the elastic rod 447, compressing the second spring 448. This reduces the impact of the lithium battery pack 7 shaking on the pulling of the connecting wire 43, thus ensuring the stability of the connection between the connecting wire 43 and the terminal body 41.

[0025] Please see Figure 3 , Figure 5 and Figure 9As shown, the buffer assembly 5 includes a buffer frame 51. Baffles 52 are fixedly installed on the inner walls of both ends of the buffer frame 51. A second slide rod 53 is slidably connected to the inner cavity of the baffle 52. A third spring 54 is sleeved on the outer surface of the second slide rod 53. A positioning block 55 is fixedly installed on the bottom outer surface of the buffer frame 51. Positioning grooves 56 are formed on the outer surfaces of both the upper and lower ends of the positioning block 55. An alarm mechanism 57 is fixedly installed on the lower surface of the buffer plate 3. Buffer blocks 58 are fixedly installed on both ends of the buffer plate 3. The buffer blocks 58 are located in the middle of the two baffles 52. The buffer blocks 58 are fixedly connected to the second slide rod 53. The third spring 54 is located on both sides of the buffer blocks 58. The buffer blocks 58 and the buffer frame 51 are slidably connected. The buffer frame 51 is fixedly connected to the inner wall of the top cover 2, and there is a gap between the buffer frame 51 and the top inner wall of the top cover 2. The buffer plate 3 and the buffer frame 51 are slidably connected. The limiting mechanism 42 can flexibly limit the terminal body 41 in the horizontal direction. The buffer assembly 5 is used to flexibly limit the terminal body 41 in the vertical direction. The use of the limit mechanism 42 in conjunction with the buffer assembly 5 further improves the stability of the internal and external wiring of the terminal body 41 when the equipment shakes. That is, when the equipment shakes, the wiring at both ends of the terminal body 41 may be dragged. When one side of the terminal body 41 is dragged, the terminal body 41 drives the buffer plate 3 to slide in the inner cavity of the top cover 2. The sliding of the buffer plate 3 drives the buffer block 58 to slide. The sliding of the buffer block 58 drives the second slide rod 53 to slide on the baffle 52. At this time, the buffer block 58 compresses the third spring 54, thereby causing the buffer plate 3 to move relative to the buffer frame 51. That is, when shaking occurs, the buffer plate 3 can drive the terminal body 41 to make a certain displacement, thereby ensuring that the terminal body 41 can cope with various shaking and dragging. When shaking occurs, the flexible connection can respond quickly and absorb vibration energy, thereby reducing the impact of shaking on the overall stability of the system. When the shaking amplitude is too large, the alarm mechanism 57 can position the terminal body 41 to prevent continuous dragging from causing wear on the cable.

[0026] Please see Figure 4 , Figure 9 and Figure 10As shown, the alarm mechanism 57 includes an alarm block 571. A fixing strip 572 is fixedly installed on the outer surface of the alarm block 571. A positioning rod 573 is slidably connected to the inner cavity of the alarm block 571. A fourth spring 574 is sleeved on one end of the positioning rod 573. A pressure block 575 is fixedly installed on the outer surface of the positioning rod 573. A button 576 is provided on the outer surface of the alarm block 571. An alarm 577 is fixedly installed on the outer surface of the alarm block 571. The fourth spring 574 is located between the pressure block 575 and the inner wall of the alarm block 571. The pressure block 575 and the alarm block 571 slide... The button 576 and the alarm 577 are electrically connected. Pressing the button 576 controls the alarm to be triggered. The fixing strip 572 is fixedly connected to the lower surface of the buffer plate 3. The positioning rod 573 and the outer surface of the positioning block 55 are in close contact, and the positioning rod 573 is located in the middle of the two positioning grooves 56. When the positioning rod 573 and the outer surface of the positioning block 55 are in contact, there is a gap between the pressure block 575 and the button 576. When a large shaking occurs or a large force is applied to the terminal body 41, that is, when the buffer plate 3 undergoes a large displacement in the inner cavity of the top cover 2, the buffer plate... 3. The fixed bar 572 moves, which in turn moves the alarm block 571. The alarm block 571 then moves the positioning rod 573. When the positioning rod 573 moves to the positioning groove 56, the force of the fourth spring 574 causes the positioning rod 573 to slide within the cavity of the alarm block 571. The sliding of the positioning rod 573 causes the pressure block 575 to slide on the alarm block 571. The sliding of the pressure block 575 causes it to press the button 576, thereby triggering the alarm 577 to sound an alarm. The alarm 577 serves as a reminder to the user that the device is currently in use. If significant shaking occurs, it is necessary to check whether the wiring of the terminal body 41 is stable. Therefore, when the terminal body 41 shakes or is dragged, the positioning rod 573 can be engaged in one of the positioning slots 56 to temporarily position the terminal body 41. At this time, the terminal body 41 remains stable relative to the top cover 2, preventing continuous shaking from causing significant wear to the cables between the terminals. At the same time, an alarm is issued to remind the staff to take maintenance measures. The positioning rod 573 and the positioning slot 56 can be disengaged and engaged by external force squeezing or stretching the buffer plate 3, which is convenient for subsequent reuse.

[0027] Please see Figure 11 and Figure 12As shown, the protective component 6 includes a protective shell 61. A sealing ring 62 is provided in the middle of the protective shell 61. The diameter of the sealing ring 62 is larger than the diameter of the upper end of the terminal body 41, ensuring that the terminal body 41 can float within the cavity of the sealing ring 62. This allows the terminal body 41 to be flexibly connected to the buffer plate 3, i.e., the terminal body 41 and the protective shell 61 are flexibly connected. A sliding sleeve 63 is slidably connected to the inner cavity of the protective shell 61. A connecting hole 64 is provided on the outer surface of the sliding sleeve 63. The sizes of the connecting holes 64 are all different, and their diameters decrease clockwise around the middle of the sliding sleeve 63. The distance from the center of the connecting hole 64 to the middle of the sliding sleeve 63 is equal. A shield is rotatably connected to the upper surface of the sliding sleeve 63. The upper surface of the retaining ring 65 has a connecting port 66, which is the same size as the largest connecting hole 64. The bottom end of the protective shell 61 is fixedly connected to the upper surface of the buffer plate 3. The lower surface of the protective shell 61 is provided with a ventilation mechanism 67. When there is an external cable in the terminal body 41, the sliding sleeve 63 is pulled to make the sliding sleeve 63 appear in the inner cavity of the protective shell 61. The retaining ring 65 can be rotated according to the thickness of the external cable to expose the connecting hole 64 of a suitable size. The cable is passed through the connecting port 66 and the connecting hole 64 to connect the cable and the terminal body 41. The sliding sleeve 63 is moved into the inner cavity of the protective shell 61, thereby reducing the amount of dust entering the terminal body 41 and achieving a dustproof effect.

[0028] Please see Figure 2 , Figure 12 and Figure 13 As shown, the ventilation mechanism 67 includes a connecting ring 671. A connecting rod 672 is fixedly installed on the upper surface of the connecting ring 671. A ventilation hole 673 is opened at the top of the connecting rod 672, and a ventilation groove 674 is opened in the middle part of the connecting rod 672. A fifth spring 675 is sleeved on the outer surface of the connecting rod 672. A dustproof cylinder 676 is fixedly installed in the middle part of the connecting rod 672. The fifth spring 675 is located between the dustproof cylinder 676 and the lower surface of the buffer plate 3. The connecting ring 671 and the outer surface of the lithium battery pack 7 are tightly fitted. The connecting rod 672 passes through the inner cavity of the buffer plate 3. The connecting rod 672 and the protective shell 61 are slidably connected. When the lithium battery pack 7 is heated and expands, it drives the connecting ring 671 to move outward. The movement of the connecting ring 671... The connecting rod 672 is moved, and the movement of the connecting rod 672 causes the connecting rod 672 to slide in the inner cavity of the protective shell 61. At this time, the ventilation hole 673 is exposed on the outer surface of the buffer plate 3, that is, the outside air is connected to the inside through the ventilation hole 673 and the ventilation groove 674. At this time, the lithium battery pack 7 is ventilated, which can reduce the temperature generated by the lithium battery pack 7 during use, thereby preventing the lithium battery pack 7 from continuing to heat up and avoiding explosion during the use of the lithium battery pack 7. The dustproof cylinder 676 is used to prevent dust from entering the interior of the shell 1 during the passage. At the same time, the fifth spring 675 serves as a reset function, keeping the ventilation hole 673 contained in the inner cavity of the shell 1 and the buffer plate 3 when the lithium battery pack 7 is not heated, thus improving the overall sealing of the equipment.

[0029] In summary, the buffer assembly 5 protects the terminal assembly 4, reducing dust ingress during external connections. It also increases ventilation and lowers the temperature of the lithium battery pack 7 when it expands due to heat. The terminal assembly 4 can slide on the buffer plate 3, and the buffer plate 3 is flexibly fixed to the top cover 2. This flexible connection provides good resilience when the outer casing 1 shakes, absorbing and buffering vibration and impact energy, thus maintaining relative stability between the terminal assembly 4 and the lithium battery pack 7. This prevents the buffer plate 3 from breaking and the terminal assembly 4 from detaching from external wiring. Positioning mechanism 42 flexibly fixes terminal body 41 onto buffer plate 3. Clamping mechanism 44 is used to limit the connection wire 43 and prevent the connection wire 43 from being dragged between terminal body 41 and lithium battery pack 7. That is, when the outer shell 1 shakes, the connection wire 43 will not be pulled between lithium battery pack 7 and terminal body 41 due to the shaking of the outer shell 1, preventing the connection wire 43 from falling off at the end of terminal body 41 or breaking due to pulling force. The limiting mechanism 42 can flexibly limit the terminal body 41 in the horizontal direction. Buffer component 5 is used to limit the terminal body 41. The vertical flexible limiting and buffer assembly 5, in conjunction with the limiting mechanism 42, further improves the stability of the internal and external wiring of the terminal body 41 when the equipment shakes. This means that when the equipment shakes, the wiring at both ends of the terminal body 41 may be dragged. When dragging occurs on one side of the terminal body 41, the terminal body 41 causes the buffer plate 3 to slide within the inner cavity of the top cover 2. The sliding of the buffer plate 3 causes the buffer block 58 to slide, and the sliding of the buffer block 58 causes the second slide rod 53 to slide on the baffle 52. At this time, the buffer block 58 compresses the third spring 54, thereby causing the buffer plate 3 to move relative to the buffer frame 51. Displacement, that is, when shaking occurs, the buffer plate 3 can drive the terminal body 41 to produce a certain displacement, thereby ensuring that the terminal body 41 can cope with various shaking and dragging. When there is an external cable on the terminal body 41, the sliding sleeve 63 is pulled to make the sliding sleeve 63 appear in the inner cavity of the protective shell 61. The shielding ring 65 can be rotated according to the thickness of the external cable to expose the connecting hole 64 with a suitable diameter. The cable is passed through the connecting port 66 and the connecting hole 64 to connect the cable and the terminal body 41. Moving the sliding sleeve 63 into the inner cavity of the protective shell 61 reduces the amount of dust entering the terminal body 41 and achieves a dustproof effect.

[0030] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

[0031] The above description is merely a preferred embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present application, based on the technical solution and concept of the present application, should be covered within the scope of protection of the present application.

Claims

1. A lithium battery pack terminal, comprising a housing (1), a top cover (2), and a lithium battery pack (7), characterized in that, The top of the outer shell (1) is fixedly connected to a top cover (2), and a buffer plate (3) is slidably connected to the inner cavity of the top cover (2). A terminal assembly (4) is provided in the inner cavity of the buffer plate (3), buffer assemblies (5) are provided at both ends of the buffer plate (3), and a protective assembly (6) is provided in the inner cavity of the buffer plate (3). A lithium battery pack (7) is fixedly installed on the inner wall of the outer shell (1), and a connecting groove (8) is opened on the outer surface of the buffer plate (3). The terminal assembly (4) includes a terminal body (41), the inner cavity of the terminal body (41) is slidably connected to a limiting mechanism (42), one end of the terminal body (41) is fixedly connected to a connecting wire (43), the outer surface of the terminal body (41) is provided with a clamping mechanism (44), the inner cavity of the top cover (2) has two buffer plates (3), and each buffer plate (3) has four terminal assemblies (4), the terminal body (41) is located in the middle part of the inner cavity of the connecting groove (8), and the end of the connecting wire (43) away from the terminal body (41) is electrically connected to the lithium battery pack (7).

2. A lithium battery pack terminal as described in claim 1, characterized in that, The limiting mechanism (42) includes a first slide rod (421), which is fixedly connected to the outer surface of the terminal body (41). A first spring (422) is sleeved on the outer surface of the first slide rod (421), and a pad (423) is slidably connected to the outer surface of the first slide rod (421). The first spring (422) is located between the terminal body (41) and the pad (423). A limiting ring (424) is fixedly installed on the lower surface of the buffer plate (3). A groove (425) is opened on the outer surface of the limiting ring (424). The first slide rod (421) and the groove (425) are slidably connected. The pad (423) and the inner wall of the limiting ring (424) are slidably connected. The diameter of the circular outer surface of the terminal body (41) at the first slide rod (421) is larger than the diameter of the connecting groove (8), and the circular outer surface is slidably connected to the lower surface of the buffer plate (3).

3. A lithium battery pack terminal as described in claim 1, characterized in that, The clamping mechanism (44) includes a limiting block (441). A plug (442) is rotatably connected to the outer surface of the limiting block (441) via a thread. An adjusting ring (443) is rotatably connected to the inner cavity of the limiting block (441). A groove is formed on the outer surface of the adjusting ring (443). The plug (442) passes through the groove of the limiting block (441) and the adjusting ring (443) and is inserted. A drive groove (444) is formed on the outer surface of the adjusting ring (443). The drive groove (444) is inclinedly distributed from the outside to the inside on the adjusting ring (443). Limiting strips (445) are fixedly installed at the four corners of the outer surface of the limiting block (441). The outer surface of the limiting strips (445) is slidably connected to... There is a clamping block (446), and a driving rod is fixedly connected to the bottom end of the clamping block (446). The driving groove (444) and the driving rod are slidably connected. A spring rod (447) is slidably connected to the inner cavity of the limiting block (441). A second spring (448) is sleeved on the outer surface of the spring rod (447). The second spring (448) is located at the inner wall diameter of the spring rod (447) and the limiting block (441). The spring rod (447) is fixedly connected to the outer surface of the terminal body (41). The clamping block (446) and the connecting wire (43) are in close contact. The connecting wire (43) passes through the middle part of the limiting block (441). The connecting wires (43) on both sides of the limiting block (441) are in a bent state.

4. A lithium battery pack terminal as described in claim 1, characterized in that, The buffer assembly (5) includes a buffer frame (51), with baffles (52) fixedly installed on the inner walls of both ends of the buffer frame (51). A second slide rod (53) is slidably connected to the inner cavity of the baffle (52). A third spring (54) is sleeved on the outer surface of the second slide rod (53). A positioning block (55) is fixedly installed on the bottom outer surface of the buffer frame (51). Positioning grooves (56) are opened on the upper and lower outer surfaces of the positioning block (55). An alarm mechanism (57) is fixedly installed on the lower surface of the buffer plate (3). Buffer blocks (58) are fixedly installed on both ends of the buffer plate (3).

5. A lithium battery pack terminal as described in claim 4, characterized in that, The buffer block (58) is located in the middle of the two baffles (52). The buffer block (58) is fixedly connected to the second slide rod (53). The third spring (54) is located on both sides of the buffer block (58). The buffer block (58) is slidably connected to the buffer frame (51). The buffer frame (51) is fixedly connected to the inner wall of the top cover (2). There is a gap between the buffer frame (51) and the top inner wall of the top cover (2). The buffer plate (3) is slidably connected to the buffer frame (51).

6. A lithium battery pack terminal as described in claim 4, characterized in that, The alarm mechanism (57) includes an alarm block (571), a fixing strip (572) is fixedly installed on the outer surface of the alarm block (571), a positioning rod (573) is slidably connected to the inner cavity of the alarm block (571), a fourth spring (574) is sleeved on one end of the positioning rod (573), a pressure block (575) is fixedly installed on the outer surface of the positioning rod (573), a button (576) is provided on the outer surface of the alarm block (571), and an alarm (577) is fixedly installed on the outer surface of the alarm block (571).

7. A lithium battery pack terminal as described in claim 6, characterized in that, The fourth spring (574) is located between the inner walls of the pressure block (575) and the alarm block (571). The pressure block (575) and the alarm block (571) are slidably connected. The button (576) and the alarm (577) are electrically connected. Pressing the button (576) controls the alarm to be triggered. The fixing strip (572) is fixedly connected to the lower surface of the buffer plate (3). The positioning rod (573) is in close contact with the outer surface of the positioning block (55). The positioning rod (573) is located in the middle of the two positioning grooves (56). When the positioning rod (573) and the outer surface of the positioning block (55) are in contact, there is a gap between the pressure block (575) and the button (576).

8. A lithium battery pack terminal as described in claim 1, characterized in that, The protective component (6) includes a protective shell (61), a sealing ring (62) is provided in the middle part of the protective shell (61), the diameter of the sealing ring (62) is larger than the upper diameter of the terminal body (41), a sliding sleeve (63) is slidably connected to the inner cavity of the protective shell (61), a connecting hole (64) is provided on the outer surface of the sliding sleeve (63), the size of the connecting holes (64) are all different, and the diameter decreases clockwise around the middle part of the sliding sleeve (63), the distance from the center of the connecting hole (64) to the middle part of the sliding sleeve (63) is equal, a shielding ring (65) is rotatably connected to the upper surface of the sliding sleeve (63), a connecting port (66) is provided on the upper surface of the shielding ring (65), the connecting port (66) is the same size as the largest connecting hole (64), the bottom end of the protective shell (61) is fixedly connected to the upper surface of the buffer plate (3), and a ventilation mechanism (67) is provided on the lower surface of the protective shell (61).

9. A lithium battery pack terminal as described in claim 8, characterized in that, The ventilation mechanism (67) includes a connecting ring (671), a connecting rod (672) is fixedly installed on the upper surface of the connecting ring (671), a ventilation hole (673) is opened at the top of the connecting rod (672), a ventilation groove (674) is opened in the middle part of the connecting rod (672), a fifth spring (675) is sleeved on the outer surface of the connecting rod (672), and a dustproof cylinder (676) is fixedly installed in the middle part of the connecting rod (672).

10. A lithium battery pack terminal as described in claim 9, characterized in that, The fifth spring (675) is located between the dustproof cylinder (676) and the lower surface of the buffer plate (3). The connecting ring (671) is in close contact with the outer surface of the lithium battery pack (7). The connecting rod (672) passes through the inner cavity of the buffer plate (3). The connecting rod (672) and the protective shell (61) are slidably connected.

Images