Shockproof sealing cover structure and tab-free battery
By adopting a shock-proof sealing cover structure in the cylindrical battery, the elastic cover and protrusions increase the friction force of the connecting belt assembly, the problems of core shaking and desoldering are solved, the shock-proof performance of the battery and the capacity of the core are improved, and the core proof performance is improved, and the core capacity is achieved through Designs such as insulating strips and explosion-proof valves improve overall performance.
Patent Information
- Application Number
- CN202323602034.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-27
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2033-12-27
AI Technical Summary
During the assembly process of cylindrical battery, the core is shaken due to the gap between the battery case and the core, and it is easy to cause unstable welding between the connecting plate and the core, or even desoldering, especially when the battery size is large. This problem is more obvious.
The anti-shock sealing cover structure is adopted, including battery case, battery pole, core, sealing cover assembly and connecting belt assembly. The friction of the connecting belt assembly is increased through elastic cover and elastic projection, and the core is fixed to ensure that it does not shake. Improve the overall performance of the battery through insulating strips, explosion-proof valves and positioning blocks.
It effectively prevents the shaking and desoldering of the core, improves the shock resistance and anti-falling capabilities of the battery, and saves the installation space of the core, increases its capacity, and improves the compression of the elastic cover and the design of the insulating strips. The overall performance of the battery.
Smart Images
Figure CN222168548U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tab-free cylindrical batteries, in particular to a shockproof sealing cover structure and a tab-free battery. Background Art
[0002] With the rapid development of the new energy industry, the share of large cylindrical batteries in the power battery market has gradually increased. Cylindrical batteries are composed of a battery shell, a connecting plate and a winding core. The connecting plate is welded to the winding core, and then the winding core and the connecting plate are encapsulated in the battery shell.
[0003] When assembling the battery, due to the certain gap between the battery shell and the winding core, there is a certain amount of shaking space for the winding core, which can easily lead to unstable welding between the connecting plate and the winding core, resulting in desoldering. The larger the size of the battery, the more obvious the desoldering phenomenon caused by the shaking of the winding core, as shown in the technical solution disclosed in the comparative document CN202223066948.6. Utility Model Content
[0004] The utility model aims to overcome the shortcomings of the prior art and provide a shockproof sealing cover structure and a tab-free battery with a stable winding core to prevent shaking and desoldering.
[0005] The purpose of this utility model is achieved through the following technical solutions:
[0006] A shockproof sealing cover structure comprises a battery shell, a battery pole, a winding core, a sealing cover assembly and a connecting belt assembly, wherein the battery shell is provided with a accommodating cavity, the winding core is installed in the accommodating cavity, the connecting belt assembly is arranged in the accommodating cavity, one end of the connecting belt assembly is connected to the winding core, and the sealing cover assembly comprises a top cover and an elastic cover, the top cover is covered on one end of the battery shell, the top cover is provided with a first pole through hole, the elastic cover covers the top cover, the elastic cover is provided with a second pole through hole, the battery pole is sequentially penetrated through the first pole through hole and the second pole through hole, the elastic cover is also provided with a mounting groove on a side away from the top cover, the mounting groove is connected to the second pole through hole, the other end of the connecting belt assembly is arranged in the mounting groove and connected to one end of the battery pole, the elastic cover is also provided with an elastic protrusion on a side away from the top cover, and the elastic protrusion abuts against the main body of the connecting belt assembly.
[0007] In one embodiment, the connecting belt assembly includes a first connecting belt, a second connecting belt and a connecting plate, the first connecting belt is connected to the battery pole and is arranged in the mounting groove, the two ends of the second connecting belt are respectively connected to the first connecting belt and the connecting plate, one side of the connecting plate is connected to the winding core, and the first connecting belt and the second connecting belt are clamped between the elastic cover and the connecting plate.
[0008] In one embodiment, the shockproof sealing cover structure and the tab-free battery further include an insulating strip, which covers one side of the first connecting strip and the second connecting strip, and is clamped between the second connecting strip and the connecting plate.
[0009] In one embodiment, there are a plurality of elastic protrusions, and the plurality of elastic protrusions are spaced apart from each other on the elastic cover, and the plurality of elastic protrusions are parallel to each other.
[0010] In one embodiment, the plurality of elastic protrusions are arc surface structures.
[0011] In one embodiment, the shockproof sealing cover structure and the tab-free battery also include an explosion-proof valve, the top cover is provided with a first explosion-proof through hole, the elastic cover is provided with a second explosion-proof through hole, the first explosion-proof through hole is connected to the second explosion-proof through hole, and the explosion-proof valve is installed in the first explosion-proof through hole.
[0012] In one embodiment, the top cover is further provided with a first liquid inlet hole, the elastic cover is further provided with a second liquid inlet hole, and the first liquid inlet hole is connected to the second liquid inlet hole.
[0013] In one embodiment, a positioning block is protruded from one side of the top cover adjacent to the elastic cover, a positioning groove is formed on one side of the elastic cover away from the connecting plate, and the positioning block is embedded in the positioning groove.
[0014] In one embodiment, the first explosion-proof via hole and the first liquid inlet hole are symmetrically arranged around the first pole via hole.
[0015] A tab-free battery comprises the shockproof sealing cover structure described in any one of the above embodiments.
[0016] Compared with the prior art, the utility model has at least the following advantages:
[0017] 1. In the above-mentioned shockproof sealing cover structure and tab-free battery, the elastic cover interference cover is arranged on the connecting belt assembly, the elastic protrusion increases the roughness of the contact surface with the connecting belt assembly, so that the friction force of fixing the connecting belt assembly is increased, and the elastic cover and the elastic protrusion are pressed against the connecting belt assembly, so that the connecting belt assembly is pressed against the winding core, so that the connecting belt assembly and the winding core in the battery shell will not shake, thereby improving the anti-drop and shockproof performance of the shockproof sealing cover structure;
[0018] 2. Since the elastic cover can be compressed, the elastic cover, the connecting belt assembly and the winding core are fitted together, so that the accommodating cavity can accommodate a larger winding core, thereby saving the installation space of the winding core and further increasing the capacity of the winding core. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0020] Figure 1 A schematic structural diagram of a shockproof sealing cover structure according to an embodiment;
[0021] Figure 2 for Figure 1 A schematic diagram of an unpackaged partial structure of the shockproof sealing cover structure shown;
[0022] Figure 3 for Figure 1 Another structural schematic diagram of the shockproof sealing cover structure shown;
[0023] Figure 4 for Figure 1 A schematic diagram of the partial structure of the shockproof sealing cover structure shown. DETAILED DESCRIPTION
[0024] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.
[0025] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.
[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.
[0027] In order to better understand the technical solutions and beneficial effects of the present application, the present application is further described in detail below in conjunction with specific embodiments:
[0028] like Figures 1 to 4 As shown, a shockproof sealing cover structure 10 of an embodiment includes a battery shell 100, a battery pole 200, a winding core 300, a sealing cover assembly 400 and a connecting belt assembly 500. The battery shell 100 is provided with a accommodating cavity 101, the winding core 300 is installed in the accommodating cavity 101, the connecting belt assembly 500 is arranged in the accommodating cavity 101, and one end of the connecting belt assembly 500 is connected to the winding core 300.
[0029] Furthermore, the sealing cover assembly 400 includes a top cover 410 and an elastic cover 420. The top cover 410 is covered at one end of the battery shell 100. The top cover 410 can seal the accommodating cavity 101. The top cover 410 is provided with a first pole through hole 4101. The elastic cover 420 covers the top cover 410. The elastic cover 420 is provided with a second pole through hole 4201. The battery pole 200 is sequentially passed through the first pole through hole 4101 and the second pole through hole 4201. The elastic cover 420 A mounting groove 4202 is also provided on the side away from the top cover 410, and the mounting groove 4202 is connected to the second pole through hole 4201. The other end of the connecting belt assembly 500 is arranged in the mounting groove 4202 and connected to one end of the battery pole 200. An elastic protrusion 421 is also protruded on the side of the elastic cover 420 away from the top cover 410. Both the elastic cover 420 and the elastic protrusion 421 are made of rubber elastic material, and the elastic protrusion 421 abuts against the main body of the connecting belt assembly 500.
[0030] In this embodiment, after the winding core 300 and the connecting belt assembly 500 are welded, the winding core 300 and the connecting belt assembly 500 are installed in the accommodating cavity 101, the battery pole 200 is inserted into the first pole through hole 4101 and the second pole through hole 4201, the battery pole 200 and the top cover 410 are welded, and then the battery pole 200 and the connecting belt assembly 500 are welded, and then the elastic cover 420 and the top cover 410 are covered on the battery shell 100 for packaging. Since the elastic cover 420 and the elastic protrusion 421 are elastic rubber, the elastic rubber will be compressed when subjected to force. When the elastic cover 420 is interference covered on the connecting belt assembly 500, the elastic cover 420 and the elastic protrusion 421 abut against the connecting belt assembly 500, so that the winding core 300 is also pressed tightly in the accommodating cavity 101, and then the top cover 410 and the battery shell 100 are sealed by laser welding.
[0031] In the above-mentioned shockproof sealing cover structure 10, the elastic cover 420 interference cover is arranged on the connecting belt assembly 500, and the elastic protrusion 421 increases the roughness of the contact surface with the connecting belt assembly 500, so that the friction force for fixing the connecting belt assembly 500 is increased, and the elastic cover 420 and the elastic protrusion 421 are pressed against the connecting belt assembly 500, so that the connecting belt assembly 500 is pressed against the core 300, so that the connecting belt assembly 500 and the core 300 in the battery shell 100 will not shake, thereby improving the anti-drop and shockproof performance of the shockproof sealing cover structure 10; because the elastic cover 420 can be compressed, the elastic cover 420, the connecting belt assembly 500 and the core 300 are fitted together, so that the accommodating cavity 101 can accommodate a larger core 300, thereby saving the installation space of the core 300, and thereby increasing the capacity of the core 300.
[0032] like Figure 2 As shown, in one embodiment, the connecting belt assembly 500 includes a first connecting belt 510, a second connecting belt 520 and a connecting plate 530, the first connecting belt 510 is connected to the battery pole 200 and is arranged in the mounting groove 4202, the two ends of the second connecting belt 520 are respectively connected to the first connecting belt 510 and the connecting plate 530, one side of the connecting plate 530 is connected to the winding core 300, and the first connecting belt 510 and the second connecting belt 520 are clamped between the elastic cover 420 and the connecting plate 530. In this embodiment, the first connecting belt 510 is connected to the battery pole 200, the second connecting belt 520 is respectively connected to the first connecting belt 510 and the connecting plate 530, the winding core 300 is a non-polar ear structure, and can be welded to one end of the polarity of the winding core 300 through the connecting plate 530, thereby reducing the internal resistance.
[0033] like Figure 1 and Figure 2 As shown, in one embodiment, the shockproof sealing cover structure 10 further includes an insulating strip 600, which covers one side of the first connecting strip 510 and the second connecting strip 520, and is clamped between the second connecting strip 520 and the connecting plate 530. In this embodiment, when the battery is short-circuited, the second connecting strip 520 will be fused, and the insulating strip 600 can separate the contact between the connecting plate 530 and the first connecting strip 510, thereby protecting the winding core 300.
[0034] like Figure 1 and Figure 4 As shown, in one embodiment, there are multiple elastic protrusions 421, and the multiple elastic protrusions 421 are arranged at intervals on the elastic cover 420, and the multiple elastic protrusions 421 are parallel to each other. In this embodiment, the multiple elastic protrusions 421 further increase the roughness of the surface of the elastic cover 420, increase the friction between the elastic cover 420 and the connecting belt assembly 500, so that the connecting belt assembly 500 is more difficult to shake.
[0035] like Figure 1 and Figure 2 As shown, in one embodiment, the plurality of elastic protrusions 421 are arc surface structures. In this embodiment, the elastic protrusions 421 with arc surface structures make the elastic cover 420 contact the connecting belt evenly, so that the elastic protrusions 421 will not damage the connecting belt assembly 500 when fixing the connecting belt assembly 500.
[0036] like Figure 1 As shown, in one embodiment, the shockproof sealing cover structure 10 further includes an explosion-proof valve 700, the top cover 410 is provided with a first explosion-proof through hole 4102, the elastic cover 420 is provided with a second explosion-proof through hole 4203, the first explosion-proof through hole 4102 is connected to the second explosion-proof through hole 4203, and the explosion-proof valve 700 is installed in the first explosion-proof through hole 4102. In this embodiment, when the gas pressure in the battery shell 100 is too high, the gas can flow out of the outside through the explosion-proof valve 700, thereby quickly releasing the pressure in the battery shell 100.
[0037] like Figure 1 As shown, in one embodiment, the top cover 410 is further provided with a first liquid inlet hole 4103, and the elastic cover 420 is further provided with a second liquid inlet hole 4204, and the first liquid inlet hole 4103 is connected to the second liquid inlet hole 4204. In this embodiment, during liquid injection, the electrolyte can be injected into the accommodating cavity 101 through the first liquid inlet hole 4103 and the second liquid inlet hole 4204. After the liquid injection is completed, the electrolyte is welded to the first liquid inlet hole 4103 through a sealing nail, so that the accommodating cavity 101 is sealed.
[0038] like Figure 1 and Figure 2 As shown, in one embodiment, a positioning block 411 is convexly provided on one side of the top cover 410 adjacent to the elastic cover 420, and a positioning groove 4205 is provided on the side of the elastic cover 420 away from the connection plate 530, and the positioning block 411 is embedded in the positioning groove 4205. In this embodiment, when the elastic cover 420 covers the top cover 410, the positioning block 411 fixes the position of the elastic cover 420 and the top cover 410, so that the first explosion-proof through hole 4102 is aligned with the second explosion-proof through hole 4203, and the first liquid inlet hole 4103 is aligned with the second liquid inlet hole 4204.
[0039] The present application also provides a tab-free battery, comprising the shockproof sealing cover structure 10 in any of the above embodiments. In this embodiment, the shockproof sealing cover structure 10 allows the winding core 300 and the connecting belt assembly 500 in the cylindrical battery to be pressed tightly, thereby improving the shockproof performance of the cylindrical battery.
[0040] Compared with the prior art, the utility model has at least the following advantages:
[0041] 1. In the above-mentioned shockproof sealing cover structure 10 and the tab-free battery, the elastic cover 420 interference cover is arranged on the connecting belt assembly 500, and the elastic protrusion 421 increases the roughness of the contact surface with the connecting belt assembly 500, so that the friction force of fixing the connecting belt assembly 500 is increased, and the elastic cover 420 and the elastic protrusion 421 are pressed against the connecting belt assembly 500, so that the connecting belt assembly 500 is pressed against the winding core 300, so that the connecting belt assembly 500 and the winding core 300 in the battery shell 100 will not shake, thereby improving the anti-drop and shockproof performance of the shockproof sealing cover structure 10;
[0042] 2. Since the elastic cover 420 can be compressed, the elastic cover 420, the connecting belt assembly 500 and the core 300 fit together, so that the accommodating cavity 101 can accommodate a larger core 300, thereby saving the installation space of the core 300 and increasing the capacity of the core 300.
[0043] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A shockproof sealing cover structure, comprising a battery shell, a battery pole, a winding core, a sealing cover assembly and a connecting belt assembly, wherein the battery shell is provided with a receiving cavity, the winding core is installed in the receiving cavity, the connecting belt assembly is arranged in the receiving cavity, and one end of the connecting belt assembly is connected to the winding core, It is characterized in that The sealing cover assembly includes a top cover and an elastic cover, the top cover is arranged on one end of the battery shell, the top cover is provided with a first pole through hole, the elastic cover covers the top cover, the elastic cover is provided with a second pole through hole, the battery pole is sequentially penetrated through the first pole through hole and the second pole through hole, the elastic cover is also provided with a mounting groove on the side away from the top cover, the mounting groove is connected to the second pole through hole, the other end of the connecting belt assembly is arranged in the mounting groove and connected to one end of the battery pole, the elastic cover is also provided with an elastic protrusion on the side away from the top cover, and the elastic protrusion abuts against the main body of the connecting belt assembly.
2. The shockproof sealing cover structure according to claim 1, It is characterized in that The connecting belt assembly includes a first connecting belt, a second connecting belt and a connecting plate, the first connecting belt is connected to the battery pole and is arranged in the mounting groove, the two ends of the second connecting belt are respectively connected to the first connecting belt and the connecting plate, one side of the connecting plate is connected to the winding core, and the first connecting belt and the second connecting belt are clamped between the elastic cover and the connecting plate.
3. The shockproof sealing cover structure according to claim 2, It is characterized in that The shockproof sealing cover structure and the tab-free battery further include an insulating strip, which covers one side of the first connecting strip and the second connecting strip, and is clamped between the second connecting strip and the connecting plate.
4. The shockproof sealing cover structure according to claim 1, It is characterized in that There are a plurality of elastic protrusions, and the plurality of elastic protrusions are arranged on the elastic cover at intervals, and the plurality of elastic protrusions are parallel to each other.
5. The shockproof sealing cover structure according to claim 4, It is characterized in that The plurality of elastic protrusions are arc surface structures.
6. The shockproof sealing cover structure according to claim 2, It is characterized in that The shockproof sealing cover structure and the tab-free battery also include an explosion-proof valve. The top cover is provided with a first explosion-proof through hole, the elastic cover is provided with a second explosion-proof through hole, the first explosion-proof through hole is connected to the second explosion-proof through hole, and the explosion-proof valve is installed in the first explosion-proof through hole.
7. The shockproof sealing cover structure according to claim 6, It is characterized in that The top cover is further provided with a first liquid inlet hole, and the elastic cover is further provided with a second liquid inlet hole, and the first liquid inlet hole is connected to the second liquid inlet hole.
8. The shockproof sealing cover structure according to claim 7, It is characterized in that A positioning block is protruded from one side of the top cover adjacent to the elastic cover, and a positioning groove is formed on one side of the elastic cover away from the connecting plate, and the positioning block is embedded in the positioning groove.
9. The shockproof sealing cover structure according to claim 8, It is characterized in that The first explosion-proof via hole and the first liquid inlet hole are symmetrically arranged along the center of the first pole via hole.
10. A battery without tabs, It is characterized in that The invention comprises the shockproof sealing cover structure according to any one of claims 1 to 9.