Top cover assembling structure of power battery

Abstract

The utility model provides a power battery top cover assembly structure, which belongs to the technical field of mechanical engineering and comprises a bearing box, a top cover arranged at the top of the bearing box, a pole hole formed in the surface of the top cover and a plurality of through grooves formed in the surface of the bearing box, and the disassembly and assembly mechanism comprises a limiting assembly used for connecting the bearing box and the top cover, and the limiting assembly is arranged on the inner surface of the top cover. According to the utility model, through the matching of the limiting assembly and the driving assembly, the problem that the bearing box and the top cover are easily loosened under vibration due to bolt connection can be prevented in a high-frequency vibration environment of the battery, and the safety problems of electrolyte leakage, short circuit and the like caused by loose connection are avoided, so that the effect of improving the use safety of the battery is realized; even if the battery is subjected to strong vibration or other external force interference in the use process, reverse rotation of the force application end can be prevented through the positioning assembly, so that the effect of avoiding connection looseness of the limiting assembly caused by reverse rotation of the force application end is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical engineering technology, specifically relating to the assembly structure of the top cover of a power battery. Background Technology

[0002] The top cover assembly structure of a power battery typically uses welding, riveting, bolting, and other methods to firmly connect the top cover to the battery casing. This ensures that the components remain relatively stable under complex operating conditions such as bumps and vibrations, maintaining the integrity of the battery structure. At the same time, the sealing rings, sealant, and other structures effectively prevent external moisture, dust, and other impurities from entering the battery, preventing internal electrolyte leakage, avoiding short circuits or damage, extending battery life, and ensuring safe use.

[0003] In existing technologies, some battery top covers and battery casings assembled using bolt connections often suffer from alternating stress at the threaded connection points due to the high-frequency vibrations generated by the battery during operation. Over time, this can lead to a gradual decrease in friction between the threads and a reduction in bolt preload, eventually causing bolt loosening and severely affecting the overall performance and safety stability of the battery. Utility Model Content

[0004] The purpose of this utility model is to provide a power battery top cover assembly structure, which aims to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A power battery top cover assembly structure includes a battery shell, a carrier box, a top cover disposed on the top of the carrier box, terminal post holes opened on the surface of the top cover, and several through slots opened on the surface of the carrier box.

[0007] The disassembly and assembly mechanism includes a limiting component for connecting the carrier box and the top cover, which is disposed on the inner surface of the top cover;

[0008] And a drive component for driving the limiting component to operate, which is disposed in the inner cavity of the limiting component.

[0009] As a preferred embodiment of this utility model, the limiting component includes several mounting cylinders fixedly connected to the inner surface of the top cover, several movable rods disposed in the inner cavity of the mounting cylinders, hooks fixedly connected to the outer end face of the movable rods, a collar fixedly installed on the outer surface of the carrier box and used in conjunction with the hooks, and a first spring fixedly installed on the outer surface of the movable rods.

[0010] In a preferred embodiment of this utility model, the position and number of the mounting cylinders correspond to the through slots, the end face of the first spring abuts against the inner wall of the mounting cylinder, and when the hook is inserted into the collar, it can engage with the collar under the force of the first spring.

[0011] As a preferred embodiment of this utility model, the driving assembly includes a force-applying end rotatably connected to the inner surface of the mounting cylinder, a threaded rod fixedly installed at the through end of the force-applying end, an internally threaded post threadedly connected to the outer surface of the threaded rod, a limiting groove formed on the outer surface of the internally threaded post and used in conjunction with the movable rod, a slider fixedly connected to the outer surface of the internally threaded post, and a sliding groove formed on the surface of the mounting cylinder and used in conjunction with the slider.

[0012] In a preferred embodiment of this utility model, the movable rod is hinged to the inner wall of the limiting groove, and the outer surface of the slider slides in contact with the inner wall of the groove.

[0013] As a preferred embodiment of this utility model, the disassembly and assembly mechanism further includes a positioning component for preventing the force-applying end from being rotated in the opposite direction due to external force. The component is located on the top of the top cover, and its number corresponds to the number of the mounting cylinders.

[0014] As a preferred embodiment of this utility model, the positioning assembly includes several fixed sleeves fixedly connected to the top of the top cover, a positioning rod slidably connected to the inner surface of the fixed sleeve, a grooved wheel fixedly sleeved on the outer surface of the force-applying end and used in conjunction with the positioning rod, a second spring sleeved on the outer side of the positioning rod, and a movable block fixedly sleeved on the outer surface of the positioning rod and used in conjunction with the second spring.

[0015] In a preferred embodiment of this utility model, the outer surface of the movable block slides in contact with the inner wall of the fixed sleeve, and the outer surface of the grooved wheel has a plurality of circular holes arranged in a circumferential array to cooperate with the threaded rod.

[0016] Compared with the prior art, the beneficial effects of this utility model are: through the cooperation of the limiting component and the driving component, it can prevent the carrier box and the top cover from loosening under vibration due to the bolt connection in the high-frequency vibration environment of the battery, and avoid safety problems such as electrolyte leakage and short circuit caused by loose connection, so as to improve the safety of battery use. Even if the battery is subjected to strong vibration or other external force interference during use, the positioning component can prevent the force-applying end from rotating in the opposite direction, so as to avoid the loosening of the limiting component connection caused by the reverse rotation of the force-applying end. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This utility model Figure 1 A magnified view of the structure at point A in the middle;

[0020] Figure 3 This is a structural schematic diagram of the carrier box from another perspective in this utility model;

[0021] Figure 4 This is a schematic diagram of the internal structure of the mounting cylinder in this utility model;

[0022] Figure 5 This is a partial structural diagram of the top cover in this utility model;

[0023] Figure 6 This utility model Figure 5 A magnified schematic diagram of the local structure at point B.

[0024] In the diagram: 100, battery casing; 101, carrier box; 102, top cover; 103, terminal hole; 104, through groove; 200, disassembly / assembly mechanism; 201, limiting component; 201a, mounting cylinder; 201b, movable rod; 201c, hook; 201d, collar; 201e, first spring; 202, drive component; 202a, force application end; 202b, threaded rod; 202c, internal threaded post; 202d, limiting groove; 202e, slider; 202f, sliding groove; 203, positioning component; 203a, fixed sleeve; 203b, positioning rod; 203c, grooved wheel; 203d, second spring; 203e, movable block. Detailed Implementation

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0028] Example

[0029] Reference Figures 1-6 This is an embodiment of the present invention, which provides a power battery top cover assembly structure, including,

[0030] The battery casing 100 includes a carrier box 101, a top cover 102 disposed on the top of the carrier box 101, terminal holes 103 formed on the surface of the top cover 102, and a plurality of through slots 104 formed on the surface of the carrier box 101.

[0031] It should be noted that the carrier box 101 is a container for the internal components of the battery, providing a stable placement space for the electrodes, electrolyte and other components inside the battery. The top cover 102 acts as a protective barrier, not only effectively preventing external impurities from entering the battery, but also providing precise installation positions for the battery terminals through the terminal hole 103, ensuring a reliable connection between the internal and external circuits of the battery. It is a key interface for the battery to transmit electrical energy. Through the cooperation of the through slot 104 and the limiting component 201, the carrier box 101 and the top cover 102 can be firmly connected without the use of bolts.

[0032] The disassembly and assembly mechanism 200 includes a limiting component 201 for connecting the carrier box 101 and the top cover 102, which is disposed on the inner surface of the top cover 102;

[0033] And a drive component 202 for driving the limit component 201 to operate, which is located in the cavity of the limit component 201.

[0034] Specifically, the limiting component 201 includes several mounting cylinders 201a fixedly connected to the inner surface of the top cover 102, several movable rods 201b disposed in the inner cavity of the mounting cylinders 201a, hooks 201c fixedly connected to the outer end face of the movable rods 201b, collars 201d fixedly installed on the outer surface of the carrier box 101 and used in conjunction with the hooks 201c, and a first spring 201e fixedly installed on the outer surface of the movable rods 201b.

[0035] It should be noted that the mounting cylinder 201a provides a stable track for the movable rod 201b, enabling it to move vertically within a defined space. The hook 201c at the outer end of the movable rod 201b is similar to a lock, which can be tightly engaged with the collar 201d. The first spring 201e is similar to a "booster", which can always apply a pushing force to the movable rod 201b, ensuring that the hook 201c is tightly engaged with the collar 201d under the pushing force, and preventing relative displacement between the carrier box 101 and the top cover 102 during battery operation.

[0036] Furthermore, the position and number of mounting cylinders 201a correspond to the through slots 104, the end face of the first spring 201e abuts against the inner wall of the mounting cylinder 201a, and when the hook 201c is inserted into the collar 201d, it can engage with the collar 201d under the force of the first spring 201e.

[0037] Preferably, the drive assembly 202 includes a force-applying end 202a rotatably connected to the inner surface of the mounting cylinder 201a, a threaded rod 202b fixedly installed at the through end of the force-applying end 202a, an internally threaded post 202c threadedly connected to the outer surface of the threaded rod 202b, a limiting groove 202d opened on the outer surface of the internally threaded post 202c and used in conjunction with the movable rod 201b, a slider 202e fixedly connected to the outer surface of the internally threaded post 202c, and a sliding groove 202f opened on the surface of the mounting cylinder 201a and used in conjunction with the slider 202e.

[0038] It should be further explained that the force-applying end 202a is the power input point for the entire drive assembly 202. By rotating the force-applying end 202a, the threaded rod 202b is driven to rotate synchronously, causing the threaded rod 202b to drive the internal threaded column 202c to move along the axial direction of the threaded rod 202b. Through the cooperation between the internal threaded column 202c and the limiting groove 202d, the movable rod 201b can be driven to move synchronously. The movable rod 201b can rotate within a small range within the limiting groove 202d. Through the cooperation between the slider 202e and the slide groove 202f, it can be ensured that the internal threaded column 202c maintains a smooth linear movement during the movement, avoiding rotation, shaking or deviation, so as to achieve the effect of precisely controlling the working state of the limiting assembly 201.

[0039] It should be noted that the movable rod 201b is hinged to the inner wall of the limiting groove 202d, and the outer surface of the slider 202e is in sliding contact with the inner wall of the slide groove 202f.

[0040] Furthermore, the disassembly and assembly mechanism 200 also includes a positioning component 203 for preventing the force-applying end 202a from being rotated in the opposite direction due to external force. This component is located on the top of the top cover 102 and its number corresponds to that of the mounting cylinder 201a.

[0041] Specifically, the positioning component 203 includes several fixed sleeves 203a fixedly connected to the top of the top cover 102, a positioning rod 203b slidably connected to the inner surface of the fixed sleeve 203a, a grooved wheel 203c fixedly sleeved on the outer surface of the force application end 202a and used in conjunction with the positioning rod 203b, a second spring 203d sleeved on the outer side of the positioning rod 203b, and a movable block 203e fixedly sleeved on the outer surface of the positioning rod 203b and used in conjunction with the second spring 203d.

[0042] It should be explained that the fixed sleeve 203a is used to provide a stable sliding space for the positioning rod 203b, and the round hole on the surface of the grooved wheel 203c is used to provide a positioning point for the positioning rod 203b. Through the cooperation of the second spring 203d and the movable block 203e, a stable elastic force can be provided for the positioning rod 203b, ensuring that the positioning rod 203b always maintains the tendency to be inserted into the round hole of the grooved wheel 203c, effectively preventing the force-applying end 202a from rotating in the opposite direction due to external force, thereby ensuring the stable and reliable connection of the limiting component 201.

[0043] Preferably, the outer surface of the movable block 203e slides in contact with the inner wall of the fixed sleeve 203a, and the outer surface of the grooved wheel 203c has a number of circular holes arranged in a circumferential array to be used with the threaded rod 202b.

[0044] When in use, ensure that the electrodes, electrolyte and other components inside the battery are stably placed in the carrier box 101, and then place the top cover 102 on the top of the carrier box 101 so that the mounting cylinder 201a is inserted into the through groove 104.

[0045] Pull the positioning rod 203b again, which will cause the movable block 203e to compress the second spring 203d, so that the positioning rod 203b will disengage from the round hole on the surface of the grooved wheel 203c, thereby releasing the restriction on the force-applying end 202a;

[0046] Release the limit, rotate the force-applying end 202a to drive the threaded rod 202b to rotate synchronously, and drive the internal threaded column 202c to move along the axial direction of the threaded rod through the rotation of the threaded rod. Then, drive the movable rod 201b to move synchronously through the limiting groove 202d on the outer surface of the internal threaded column. As the movable rod 201b moves, the hook 201c at its outer end gradually approaches and inserts into the collar 201d on the outer surface of the carrier box. The first spring 201e installed on the outer surface of the movable rod applies a pushing force to the movable rod, so that the hook 201c is tightly engaged in the collar, completing the stable connection between the carrier box and the top cover.

[0047] Then release the positioning rod 203b, and the reaction force of the second spring 203d will drive the movable block 203e to reset. Then the reset of the movable block 203e will drive the positioning rod 203b to move into the round hole on the surface of the grooved wheel 203c, thereby limiting the force-applying end 202a.

[0048] The terminal hole 103 provides an installation position for the battery terminal, enabling a reliable connection between the internal and external circuits of the battery, allowing the battery to enter normal working condition.

[0049] When it is necessary to remove the top cover 102, manually press the end of the hook 201c to retract it into the inside of the collar 201d, release the limit of the positioning component 203 again, and then rotate the force application end 202a in the opposite direction to reverse the above action process, which will move the hook 201c to the position of disengaging from the collar 201d, thereby separating the carrier box 101 from the top cover 102.

[0050] In summary, through the cooperation of the limiting component 201 and the driving component 202, the problem of the carrier box 101 and the top cover 102 being easily loosened under vibration due to bolt connection can be prevented in the high-frequency vibration environment of the battery. This avoids safety problems such as electrolyte leakage and short circuit caused by loose connection, thereby improving the safety of battery use. Even if the battery is subjected to strong vibration or other external force interference during use, the positioning component 203 can prevent the force-applying end 202a from rotating in the opposite direction, thereby avoiding the loosening of the limiting component 201 connection caused by the reverse rotation of the force-applying end 202a.

[0051] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0052] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0053] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A power battery top cover assembly structure, characterized in that: include, The battery casing (100) includes a carrier box (101), a top cover (102) disposed on the top of the carrier box (101), an electrode post hole (103) opened on the surface of the top cover (102), and a plurality of through grooves (104) opened on the surface of the carrier box (101). The disassembly and assembly mechanism (200) includes a limiting component (201) for connecting the carrier box (101) and the top cover (102), which is disposed on the inner surface of the top cover (102); And a drive component (202) for driving the limiting component (201) to operate, which is disposed in the cavity of the limiting component (201).

2. The power battery top cover assembly structure according to claim 1, characterized in that: The limiting component (201) includes a plurality of mounting cylinders (201a) fixedly connected to the inner surface of the top cover (102), a plurality of movable rods (201b) disposed in the inner cavity of the mounting cylinders (201a), a hook (201c) fixedly connected to the outer end face of the movable rod (201b), a collar (201d) fixedly installed on the outer surface of the carrier box (101) and used in conjunction with the hook (201c), and a first spring (201e) fixedly installed on the outer surface of the movable rod (201b).

3. The power battery top cover assembly structure according to claim 2, characterized in that: The position and number of the mounting cylinders (201a) correspond to the through slots (104). The end face of the first spring (201e) abuts against the inner wall of the mounting cylinder (201a). When the hook (201c) is inserted into the collar (201d), it can engage with the collar (201d) under the force of the first spring (201e).

4. The power battery top cover assembly structure according to claim 3, characterized in that: The drive assembly (202) includes a force-applying end (202a) rotatably connected to the inner surface of the mounting cylinder (201a), a threaded rod (202b) fixedly installed at the through end of the force-applying end (202a), an internally threaded post (202c) threadedly connected to the outer surface of the threaded rod (202b), a limiting groove (202d) opened on the outer surface of the internally threaded post (202c) and used in conjunction with the movable rod (201b), a slider (202e) fixedly connected to the outer surface of the internally threaded post (202c), and a sliding groove (202f) opened on the surface of the mounting cylinder (201a) and used in conjunction with the slider (202e).

5. The power battery top cover assembly structure according to claim 4, characterized in that: The movable rod (201b) is hinged to the inner wall of the limiting groove (202d), and the outer surface of the slider (202e) slides in contact with the inner wall of the sliding groove (202f).

6. The power battery top cover assembly structure according to claim 5, characterized in that: The disassembly and assembly mechanism (200) further includes a positioning component (203) for preventing the force-applying end (202a) from being rotated in the opposite direction due to external force. The positioning component (203) is located on the top of the top cover (102), and its number corresponds to that of the mounting cylinder (201a).

7. The power battery top cover assembly structure according to claim 6, characterized in that: The positioning assembly (203) includes several fixed sleeves (203a) fixedly connected to the top of the top cover (102), a positioning rod (203b) slidably connected to the inner surface of the fixed sleeve (203a), a grooved wheel (203c) fixedly sleeved on the outer surface of the force-applying end (202a) and used in conjunction with the positioning rod (203b), a second spring (203d) sleeved on the outer side of the positioning rod (203b), and a movable block (203e) fixedly sleeved on the outer surface of the positioning rod (203b) and used in conjunction with the second spring (203d).

8. The power battery top cover assembly structure according to claim 7, characterized in that: The outer surface of the movable block (203e) slides in contact with the inner wall of the fixed sleeve (203a), and the outer surface of the grooved wheel (203c) has a number of circular holes arranged in a circumferential array to cooperate with the threaded rod (202b).

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