CN219498140U - Liquid mouth structure is annotated to power battery top cap - Google Patents
Liquid mouth structure is annotated to power battery top cap Download PDFInfo
- Publication number
- CN219498140U CN219498140U CN202320469584.1U CN202320469584U CN219498140U CN 219498140 U CN219498140 U CN 219498140U CN 202320469584 U CN202320469584 U CN 202320469584U CN 219498140 U CN219498140 U CN 219498140U
- Authority
- CN
- China
- Prior art keywords
- hole
- liquid injection
- top cover
- positioning groove
- nut
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Filling, Topping-Up Batteries (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The application relates to a top cover liquid injection port structure of a power battery, which is applicable to a shell battery and comprises a top cover, a liquid injection port assembly and a lower plastic sheet; the top cover is abutted to the lower plastic sheet; the top cover is provided with a liquid injection hole penetrating through the top cover, and the lower plastic sheet is provided with a positioning groove; the liquid injection hole is opposite to the positioning groove, and the positioning groove is concavely arranged in a direction away from the liquid injection hole; the liquid injection port assembly comprises a hole blocking nut and a screw, wherein the hole blocking nut is arranged in the positioning groove, and a gap is formed between the side wall of the hole blocking nut and the side wall of the positioning groove; the small diameter end of the screw penetrates through the liquid injection hole to be in threaded connection with the hole blocking nut. The utility model has the advantages of this application simple structure, the leakproofness is good, and the cost is lower, can carry out the fluid infusion to power battery, has effectively prolonged the life of battery, also fine improvement the utilization ratio of resource simultaneously, effectively avoid the waste of resource.
Description
Technical Field
The utility model relates to the technical field of power batteries, in particular to a top cover liquid injection port structure of a power battery.
Background
Along with the development of technology, a power battery is becoming more and more interesting as an energy device, and is widely applied in the fields of mobile phones, electric automobiles, electric tools and the like.
At present, the liquid injection port plugging technology of the top cover of the power battery (comprising a lithium ion battery/sodium ion battery) generally adopts a laser welding mode to plug after a steel ball is punched in a liquid injection hole or a glue nail is used for plugging the liquid injection hole, and the structure is simpler, but when electrolyte in the battery is consumed at the end of use, the capacity of the battery is rapidly reduced, the battery can only be scrapped and disassembled and cannot be reused, the service life of the battery is greatly shortened, and the waste of resources is also caused.
Disclosure of Invention
Based on the structure, the utility model provides a top cover liquid injection port structure of a power battery, and aims to solve the technical problems that the conventional top cover liquid injection port structure cannot perform secondary liquid injection, the service life of the battery is shortened, resource waste is caused and the like. The power battery liquid supplementing device is simple in structure, good in sealing performance and low in cost, and can supplement liquid for the power battery, so that the service life of the battery is effectively prolonged.
In order to achieve the above purpose, the embodiment of the present utility model proposes the following technical solutions:
the utility model provides a power battery top cap annotates liquid mouth structure, is applicable to the casing battery, includes top cap, annotates liquid mouth subassembly and lower plastic piece; the top cover is abutted to the lower plastic sheet;
the top cover is provided with a liquid injection hole penetrating through the top cover, and the lower plastic sheet is provided with a positioning groove; the liquid injection hole is opposite to the positioning groove, and the positioning groove is concavely arranged in a direction away from the liquid injection hole;
the liquid injection port assembly comprises a hole blocking nut and a screw, wherein the hole blocking nut is arranged in the positioning groove, and a gap is formed between the side wall of the hole blocking nut and the side wall of the positioning groove; the small diameter end of the screw penetrates through the liquid injection hole to be in threaded connection with the hole blocking nut.
By the arrangement, when the battery needs to be supplemented with electrolyte, the electrolyte can be supplemented only by unscrewing the screw in a proper environment, and at the moment, the electrolyte can flow into the battery along the gap between the side wall of the hole blocking nut and the side wall of the positioning groove.
As a preferable implementation mode, a sealing ring groove is circumferentially arranged on the end face, close to the top cover, of the hole blocking nut, and a sealing ring is arranged in the sealing ring groove. When electrolyte of the battery is filled, the hole blocking nut is locked through the screw to realize blocking, and meanwhile, the sealing ring is extruded and deformed by the screw to achieve the sealing purpose, so that the liquid injection hole can be further ensured to be free from liquid leakage.
As a preferred embodiment, the side wall of the positioning groove is uniformly provided with a plurality of hollows, and each hollow is arranged in an outward sunken manner relative to the side wall of the positioning groove. The setting like this, the diameter (size) of fretwork is less than the diameter (size) of stifled hole nut, when stifled hole nut was placed in the constant head tank, can make to have the clearance between the lateral wall of stifled hole nut and the lateral wall of constant head tank, make things convenient for the battery to replenish electrolyte.
As a preferred embodiment, the bottom surface of the positioning groove is provided with a circular hole.
As the preferred implementation mode, annotate the liquid hole including concave station and the through-hole that the intercommunication set up, the through-hole is close to lower plastic piece setting, the concave station is kept away from lower plastic piece setting, just the through-hole set up in the geometric center department of concave station.
As a preferred embodiment, the recess stand and the through hole are integrally formed.
As a preferred embodiment, the hole blocking nut is arranged in a matching way with the positioning groove; the screw is arranged in a matching way with the liquid injection hole; the screw and the hole blocking nut are arranged in a matching mode.
As a preferred embodiment, the blind nut is provided with a plurality of blind holes. Thus, the electrolyte can be effectively prevented from penetrating from the thread to the leakage.
As a preferred embodiment, the hole blocking nut is a round nut, a square nut, an oval nut, or a polygonal nut.
In a preferred embodiment, the hole blocking nut is a metal nut or a plastic nut.
As a preferable embodiment, the metal nut is an aluminum alloy nut, a stainless steel nut, a copper nut, or the like; the plastic nut is a PP nut, a PPS nut or a PET nut.
As a preferred implementation mode, the top cover is also provided with an explosion-proof valve hole, the explosion-proof valve hole is arranged adjacent to the liquid injection hole, and an explosion-proof valve assembly is arranged in the explosion-proof valve hole.
As a preferred embodiment, the explosion-proof valve assembly comprises an explosion-proof valve and an explosion-proof valve protection patch, wherein the explosion-proof valve is arranged in the explosion-proof valve hole, and the explosion-proof valve protection patch is arranged on the side surface, far away from the lower plastic sheet, of the explosion-proof valve.
As a preferred embodiment, the two ends of the top cover are provided with a positive pole hole and a negative pole hole, the liquid injection hole is arranged between the positive pole hole and the explosion-proof valve hole, and the explosion-proof valve hole is arranged between the liquid injection hole and the negative pole hole; the positive pole post hole is internally provided with a positive pole post component, and the negative pole post hole is internally provided with a negative pole post component.
As a preferred embodiment, the case battery is a square case, preferably a square case lithium battery or a square case sodium battery.
The utility model has the beneficial effects that: the utility model provides a can effectively solve current top cap annotate liquid mouth structure and can not carry out secondary annotate liquid, shortened the life of battery and cause technical problem such as wasting of resources. This application sets up positioning groove, sets up stifled hole nut in positioning groove through on plastic piece down to set up the clearance between the lateral wall of control positioning groove and stifled hole double-screw bolt, when making the battery need supplement electrolyte, only need unscrew the screw under suitable environment, can carry out electrolyte and supplement, at this moment, the electrolyte can flow into inside the battery along the clearance between stifled hole nut lateral wall and the positioning groove lateral wall. The utility model has the advantages of this application simple structure, the leakproofness is good, and the cost is lower, can carry out fluid infusion (secondary annotate liquid) to power battery, has effectively prolonged the life of battery, also fine improvement the utilization ratio of resource simultaneously, effectively avoid the waste of resource.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a top cover liquid filling port structure of a power battery according to an embodiment of the utility model;
FIG. 2 is a schematic diagram of an exploded view of the top cover liquid filling port structure of the power cell of FIG. 1;
FIG. 3 is a schematic view of a longitudinal (AA direction) cross-sectional structure of the top cap liquid injection port structure of the power battery of FIG. 1;
FIG. 4 is an enlarged schematic view of the structure at B of FIG. 3;
fig. 5 is a schematic structural view of a lower plastic sheet of the power battery top cover liquid injection port structure of fig. 1.
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, if directional indications (such as up, down, left, right, front, back, top, bottom … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
At present, the liquid injection port plugging technology of the top cover of the power battery (comprising a lithium ion battery/sodium ion battery) generally adopts a laser welding mode to plug after a steel ball is punched in a liquid injection hole or a glue nail is used for plugging the liquid injection hole, and the structure is simpler, but when electrolyte in the battery is consumed at the end of use, the capacity of the battery is rapidly reduced, the battery can only be scrapped and disassembled and cannot be reused, the service life of the battery is greatly shortened, and the waste of resources is also caused. Based on the above, the utility model provides a top cover liquid injection port structure of a power battery to solve the above technical problems.
Specifically, as shown in fig. 1 to 5, the embodiment of the utility model provides a top cover liquid injection port structure of a power battery, which is applicable to a shell battery and comprises a top cover 10, a liquid injection port assembly 20 and a lower plastic sheet 30; the top cover 10 is abutted against the lower plastic sheet 30;
the top cover 10 is provided with a liquid injection hole 11 penetrating through the top cover 10, and the lower plastic sheet 30 is provided with a positioning groove 31; the liquid injection hole 11 is opposite to the positioning groove 31, and the positioning groove 31 is concavely arranged in a direction away from the liquid injection hole 11;
the liquid injection port assembly 20 comprises a hole blocking nut 21 and a screw 22, wherein the hole blocking nut 21 is arranged in the positioning groove 31, and a gap 40 is arranged between the side wall of the hole blocking nut 21 and the side wall of the positioning groove 31; the small diameter end of the screw 22 passes through the liquid injection hole 11 and is in threaded connection with the hole blocking nut 21.
By the arrangement, when the electrolyte is required to be replenished to the battery, the electrolyte can be replenished only by unscrewing the screw 22 under a proper environment, and at this time, the electrolyte can flow into the battery along the gap 40 between the side wall of the hole blocking nut 21 and the side wall of the positioning groove 31.
As a preferred embodiment, the end surface of the hole blocking nut 21, which is close to the top cover 10, is circumferentially provided with a seal ring groove 211, and a seal ring 50 is disposed in the seal ring groove 211. When the electrolyte of the battery is filled, the hole blocking nut 21 is locked by the screw 22 to realize blocking, and meanwhile, the sealing ring 50 is extruded and deformed by the locking of the screw 22 to achieve the purpose of sealing, so that the liquid injection hole can be further ensured to be free from liquid leakage.
As a preferred embodiment, the sidewall of the positioning groove 31 is uniformly provided with a plurality of hollows 311, and each hollow 311 is concavely disposed outwards relative to the sidewall of the positioning groove 31. Thus, the diameter (size) of the hollow 311 is smaller than the diameter (size) of the hole blocking nut 21, and when the hole blocking nut 21 is placed in the positioning groove 31, a gap can exist between the side wall of the hole blocking nut 21 and the side wall of the positioning groove 31, so that the battery can conveniently supplement electrolyte.
As a preferred embodiment, the bottom surface of the positioning groove 31 is provided with a circular hole 312.
As a preferred embodiment, the liquid injection hole 11 includes a concave stage 111 and a through hole 112 which are disposed in communication, the through hole 112 is disposed near the lower plastic sheet 30, the concave stage 111 is disposed far away from the lower plastic sheet 30, and the through hole 112 is disposed at the geometric center of the concave stage 111.
As a preferred embodiment, the recess 111 is integrally formed with the through hole 112.
As a preferred embodiment, the hole blocking nut 21 is adapted to the positioning groove 31; the screw 22 is arranged in a matching way with the liquid injection hole 11; the screw 22 is arranged in a matching manner with the hole blocking nut 21.
As a preferred embodiment, the blind nut 21 is provided with a plurality of blind holes (not shown). Thus, the electrolyte can be effectively prevented from penetrating from the thread to the leakage.
As a preferred embodiment, the hole blocking nut 21 is a round nut, a square nut, an oval nut, or a polygonal nut.
As a preferred embodiment, the hole blocking nut 21 is a metal nut or a plastic nut.
As a preferable embodiment, the metal nut is an aluminum alloy nut, a stainless steel nut, a copper nut, or the like; the plastic nut is a PP nut, a PPS nut or a PET nut.
As a preferred embodiment, the top cover 10 is further provided with an explosion-proof valve hole 12, the explosion-proof valve hole 12 is disposed adjacent to the liquid injection hole 11, and an explosion-proof valve assembly 60 is disposed in the explosion-proof valve hole 12.
As a preferred embodiment, the explosion-proof valve assembly 60 includes an explosion-proof valve (not shown) disposed in the explosion-proof valve hole and an explosion-proof valve protection patch (not shown) disposed on a side of the explosion-proof valve away from the lower plastic sheet.
As a preferred embodiment, the top cover 10 is provided with a positive electrode column hole 13 and a negative electrode column hole 14 at two ends, the liquid injection hole 11 is arranged between the positive electrode column hole 13 and the explosion-proof valve hole 12, and the explosion-proof valve hole 12 is arranged between the liquid injection hole 11 and the negative electrode column hole 14; the positive electrode post hole 13 is provided therein with a positive electrode post assembly 70, and the negative electrode post hole 14 is provided therein with a negative electrode post assembly 80.
As a preferred embodiment, the case battery is a square case, preferably a square case lithium battery or a square case sodium battery.
The utility model provides a can effectively solve current top cap annotate liquid mouth structure and can not carry out secondary annotate liquid, shortened the life of battery and cause technical problem such as wasting of resources. This application sets up positioning groove, sets up stifled hole nut in positioning groove through on plastic piece down to set up the clearance between the lateral wall of control positioning groove and stifled hole double-screw bolt, when making the battery need supplement electrolyte, only need unscrew the screw under suitable environment, can carry out electrolyte and supplement, at this moment, the electrolyte can flow into inside the battery along the clearance between stifled hole nut lateral wall and the positioning groove lateral wall. The utility model has the advantages of this application simple structure, the leakproofness is good, and the cost is lower, can carry out fluid infusion (secondary annotate liquid) to power battery, has effectively prolonged the life of battery, also fine improvement the utilization ratio of resource simultaneously, effectively avoid the waste of resource.
In the embodiment of the application, the cover plate may be an aluminum cover plate or other material cover plates.
In the application, the sealing ring can be made of one material or at least two materials of PP, PC, PVC, PPS, PE and PET.
The lower plastic sheet can be obtained by injection molding, has higher precision, and has simple and reliable structure.
In the description herein, reference to the term "one embodiment," "an example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in the foregoing embodiments, and that the embodiments described in the foregoing embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.
The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.
Claims (10)
1. The utility model provides a power battery top cap annotates liquid mouth structure which characterized in that is applicable to the casing battery, includes top cap, annotates liquid mouth subassembly and lower plastic piece; the top cover is abutted to the lower plastic sheet;
the top cover is provided with a liquid injection hole penetrating through the top cover, and the lower plastic sheet is provided with a positioning groove; the liquid injection hole is opposite to the positioning groove, and the positioning groove is concavely arranged in a direction away from the liquid injection hole;
the liquid injection port assembly comprises a hole blocking nut and a screw, wherein the hole blocking nut is arranged in the positioning groove, and a gap is formed between the side wall of the hole blocking nut and the side wall of the positioning groove; the small diameter end of the screw penetrates through the liquid injection hole to be in threaded connection with the hole blocking nut.
2. The power battery top cover liquid injection port structure according to claim 1, wherein a sealing ring groove is circumferentially arranged on the end face, close to the top cover, of the hole blocking nut, and a sealing ring is arranged in the sealing ring groove.
3. The power battery top cover liquid injection port structure according to claim 1, wherein a plurality of hollows are uniformly formed in the side wall of the positioning groove, and each hollow is arranged in an outward sunken mode relative to the side wall of the positioning groove.
4. The power battery top cover liquid injection port structure according to claim 3, wherein a circular hole is formed in the bottom surface of the positioning groove.
5. The power battery top cover liquid injection port structure according to claim 1, wherein the liquid injection hole comprises a concave table and a through hole which are communicated, the through hole is arranged close to the lower plastic sheet, the concave table is far away from the lower plastic sheet, and the through hole is arranged at the geometric center of the concave table.
6. The power cell top cover liquid injection port structure according to claim 5, wherein the concave table and the through hole are integrally formed.
7. The power battery top cover liquid injection port structure according to claim 1, wherein the hole blocking nut is arranged in a matching way with the positioning groove; the screw is arranged in a matching way with the liquid injection hole; the screw and the hole blocking nut are arranged in a matching mode.
8. The power battery top cover liquid injection port structure according to claim 1, wherein a plurality of blind holes are formed in the hole blocking nut;
the hole blocking nut is a round nut, a square nut, an oval nut or a polygonal nut.
9. The power battery top cover liquid injection port structure according to claim 1, wherein the top cover is further provided with an explosion-proof valve hole, the explosion-proof valve hole is arranged adjacent to the liquid injection hole, and an explosion-proof valve assembly is arranged in the explosion-proof valve hole;
the two ends of the top cover are provided with a positive pole hole and a negative pole hole, the liquid injection hole is arranged between the positive pole hole and the explosion-proof valve hole, and the explosion-proof valve hole is arranged between the liquid injection hole and the negative pole hole; the positive pole post hole is internally provided with a positive pole post component, and the negative pole post hole is internally provided with a negative pole post component.
10. The power cell top cap fill port structure of claim 1 wherein said housing cell is a square housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320469584.1U CN219498140U (en) | 2023-03-13 | 2023-03-13 | Liquid mouth structure is annotated to power battery top cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320469584.1U CN219498140U (en) | 2023-03-13 | 2023-03-13 | Liquid mouth structure is annotated to power battery top cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219498140U true CN219498140U (en) | 2023-08-08 |
Family
ID=87512593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320469584.1U Active CN219498140U (en) | 2023-03-13 | 2023-03-13 | Liquid mouth structure is annotated to power battery top cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219498140U (en) |
-
2023
- 2023-03-13 CN CN202320469584.1U patent/CN219498140U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN214254576U (en) | End cover assembly, battery monomer, battery and power consumption device | |
| WO2021093279A1 (en) | Button lithium ion battery and manufacturing method therefor | |
| CN215418489U (en) | Steel shell button cell with double explosion-proof structure | |
| EP4277013A1 (en) | Battery cell, battery and electric device | |
| CN212485426U (en) | Battery top cap and battery cell | |
| CN219123347U (en) | Battery cover plate and lithium ion battery | |
| CN217306722U (en) | End cover assembly, single battery, battery and power utilization device | |
| CN216597913U (en) | Battery and electric device | |
| CN219498140U (en) | Liquid mouth structure is annotated to power battery top cap | |
| CN110707281B (en) | Secondary cell top cap fluid infusion structure | |
| CN219575903U (en) | Sealing nail structure of power battery and top cover assembly | |
| CN218648037U (en) | Power battery top cover structure | |
| CN217606923U (en) | Power battery top cover structure | |
| CN205621773U (en) | Battery or electric capacity upper cover with pressure of releasing effect | |
| CN218005134U (en) | Plastic structure, power battery top cap and power battery | |
| CN219286534U (en) | Battery cover plate structure | |
| CN217934003U (en) | Power battery top cover structure | |
| CN217788570U (en) | Sealing member, battery top cap and power battery | |
| CN217956090U (en) | Power battery annotates liquid mouth block structure | |
| CN219371169U (en) | Battery cover plate assembly and power battery | |
| CN214672767U (en) | Battery case and lithium ion battery | |
| CN221080176U (en) | Top cap subassembly and battery package | |
| CN219321470U (en) | Battery shell structure | |
| CN221080303U (en) | Liquid injection device | |
| CN220963680U (en) | Post reverse riveting structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |