CN217589377U

CN217589377U - Liquid injection auxiliary part and battery

Info

Publication number: CN217589377U
Application number: CN202221068191.1U
Authority: CN
Inventors: 方华
Original assignee: Hubei Eve Power Co Ltd
Current assignee: Hubei Eve Power Co Ltd
Priority date: 2022-05-06
Filing date: 2022-05-06
Publication date: 2022-10-14
Anticipated expiration: 2032-05-06

Abstract

The utility model relates to the technical field of batteries, a annotate liquid auxiliary member is disclosed, can set up in the notes liquid mouth department of the apron subassembly of battery. This annotate liquid auxiliary member is made by insulating elastic material, including base member and notes liquid portion that are connected and set up the fixed part on the base member, the periphery of annotating the liquid portion is located to the fixed part ring, and the fixed part can be inserted and locate in annotating the liquid mouth and the inner wall of butt notes liquid mouth, and base member and apron subassembly butt and fixed. And annotate liquid portion then includes the notes liquid piece that a plurality of butts in proper order set up, because of annotating the liquid piece elasticity, then annotate the liquid head and can stretch into between the adjacent notes liquid piece through force annotating liquid piece deformation, stretch into inside the battery promptly, and annotate the liquid head when forcing notes liquid piece deformation, the surface of annotating the liquid head will with annotate liquid piece butt to when annotating liquid head relative notes liquid piece and remove, scrape away the residual electrolyte of annotating liquid head surface, avoid carrying electrolyte to annotating the surface of liquid mouth, improve and annotate liquid mouth welded seal's reliability. The utility model also discloses a battery.

Description

Liquid injection auxiliary part and battery

Technical Field

The utility model relates to a battery technology field especially relates to an annotate liquid auxiliary member and battery.

Background

The battery annotates the liquid mouth and has inserted sealed gluey nail, need extract sealed gluey nail when annotating the liquid, and annotate liquid two times and all accomplish the back then need carry out welded seal to annotating the liquid mouth. However, in the automatic operation process of equipment, annotate the liquid head and shift out and to carry partial electrolyte to annotating the surface of liquid mouth, when carrying out welded seal to annotating the liquid mouth, remaining electrolyte can lead to the apron to be heated unevenly when welding, and then lead to annotating liquid mouth explosive welding and annotating liquid mouth welding seam and reveal the defect, lead to annotating the sealed reliability variation of liquid mouth, the product percent of pass reduces, is difficult to deal with the use that needs product high reliability field such as transportation, aviation.

Therefore, a liquid injection auxiliary member and a battery are needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an annotate liquid auxiliary member to avoid electrolyte to reveal to annotating the surface of liquid mouth, improve and annotate liquid mouth welded seal's reliability.

As the above conception, the utility model discloses the technical scheme who adopts is:

the utility model provides an annotate liquid auxiliary member, sets up in the notes liquid mouth department of the apron subassembly of battery, annotate the liquid auxiliary member and make by insulating elastic material, including the base member that is connected and annotate liquid portion, annotate liquid portion and include a plurality of notes liquid pieces that butt set up in proper order, annotate the liquid head and can stretch into adjacently annotate between the liquid piece, be provided with the fixed part on the base member, the fixed part ring is located annotate the periphery of liquid piece, the fixed part can be inserted and locate annotate the interior just butt of liquid mouth annotate the inner wall of liquid mouth, the base member with apron subassembly butt is fixed.

Optionally, the fixing part is in interference fit with the liquid injection port.

Optionally, the liquid injection part is overlapped with the axis of the fixing part.

Optionally, the liquid injection sheet is fan-shaped, and the plurality of liquid injection sheets are abutted to form the circular liquid injection part.

Optionally, the curved edge of each liquid injection sheet is connected to the base body.

Optionally, the radius of the liquid injection sheet is a, the inner diameter of the fixing part is b, and b/2-a is more than 1mm and less than 2mm.

Optionally, the height of the fixing part is c, and 2mm < c < 3mm, perpendicular to the plane of the substrate.

Optionally, the liquid injection part is cut to form a plurality of liquid injection sheets.

Optionally, the base and the fixing portion are integrally manufactured.

Another object of the utility model is to provide a battery, its notes liquid mouth welding is sealed reliable, and product property can be good.

As the conception, the utility model adopts the technical proposal that:

a battery comprises the liquid injection auxiliary part.

The utility model has the advantages that:

the utility model provides a annotate liquid auxiliary member can install in the notes liquid mouth department of the apron subassembly of battery, annotates the liquid head and annotating electrolyte to battery inside, perhaps all will pass this notes liquid auxiliary member when leaving battery inside after annotating the liquid and accomplishing. This annotate liquid auxiliary member is made by insulating elastic material, including the base member that is connected and annotate liquid portion, annotate liquid portion and include the notes liquid piece that a plurality of butt settings in proper order, annotate the liquid head and can stretch into between the adjacent notes liquid piece, annotate the liquid piece promptly and can dodge notes liquid head, nevertheless also will with the surface butt of annotating the liquid head simultaneously to this scrapes away and annotates the remaining electrolyte of liquid head surface, avoids electrolyte to be carried to the surface of annotating the liquid mouth, influences follow-up welding effect. Be provided with the fixed part on the base member, the periphery of annotating the liquid piece is located to the fixed part ring, and this fixed part can insert and locate in annotating the liquid mouth and the inner wall that the liquid mouth was annotated in the butt, and the base member also will with apron subassembly butt and fixed to this relative fixation who annotates liquid auxiliary member and apron subassembly is realized.

The utility model provides a battery, including foretell notes liquid auxiliary member, it annotates liquid mouth welded seal reliable, and product property can be good.

Drawings

Fig. 1 is a schematic structural diagram of a liquid injection auxiliary member provided by an embodiment of the present invention;

FIG. 2 isbase:Sub>A cross-sectional view A-A of FIG. 1;

fig. 3 is a schematic view of a partial structure of a battery according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view B-B of FIG. 3;

fig. 5 is an enlarged view at F in fig. 4.

In the figure:

1. a base; 2. a fixed part; 3. a liquid injection part; 31. liquid injection sheet;

100. a liquid injection auxiliary member; 200. a cover plate assembly; 2001. a liquid injection port; 300. and (5) sealing the nail.

Detailed Description

In order to make the technical problems, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further explained below by means of specific embodiments in conjunction with the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The technical solution of the present invention is further explained by the following embodiments with reference to the drawings.

In order to avoid the problem that after the battery is filled with liquid, the liquid filling head carries the electrolyte to the outer surface of the liquid filling port 2001 when leaving the liquid filling port 2001, the present embodiment provides a liquid filling auxiliary member 100, which can be installed on one side of the cover plate assembly 200 facing the inside of the battery, when the battery is filled with liquid, the liquid filling head can pass through the liquid filling auxiliary member 100 and extend into the inside of the battery, and after the liquid filling is completed, the liquid filling head passes through the liquid filling auxiliary member 100 again and then leaves the inside of the battery. In the process that the liquid injection head passes through the liquid injection auxiliary part 100, the liquid injection auxiliary part 100 can scrape off the residual electrolyte on the outer surface of the liquid injection head, so that the liquid injection head is prevented from carrying the electrolyte to the outer surface of the liquid injection port 2001, and the structure of the liquid injection auxiliary part 100 can not influence the insertion of a sealing rubber nail in the process of injecting liquid twice.

The liquid injection auxiliary member 100 is made of an insulating elastic material and comprises a base body 1 and a liquid injection part 3 which are connected, wherein the liquid injection part 3 can be penetrated by a liquid injection head. As shown in fig. 1 and 2, the liquid injection part 3 includes a plurality of liquid injection sheets 31 which are sequentially abutted, and the liquid injection head can extend into the space between the adjacent liquid injection sheets 31, when the liquid injection sheet 31 is not acted by external force, the plurality of liquid injection sheets 31 are abutted with each other, and when the liquid injection sheet 31 is acted by external force, namely the liquid injection head needs to pass through the liquid injection part 3, the plurality of liquid injection sheets 31 are partially separated to avoid the liquid injection head, the liquid injection sheet 31 can be deformed to benefit from the material thereof, and the elastic material can also restore the liquid injection sheet 31 to the state of abutting with each other after the liquid injection head leaves. However, when the liquid injection head is separated from the liquid injection part 3 and needs to pass through the liquid injection part, although the elastic deformation of the liquid injection sheet 31 enables the liquid injection head to be positioned between the adjacent liquid injection sheets 31, the liquid injection sheet 31 is also abutted against the liquid injection head, and the electrolyte on the outer surface of the liquid injection head can be scraped through the friction between the liquid injection sheet 31 and the liquid injection head.

The base body 1 is provided with a fixing part 2, the fixing part 2 is arranged around the periphery of the liquid injection sheet 31, the fixing part 2 can be inserted into the liquid injection port 2001, the fixing part 2 abuts against the inner wall of the liquid injection port 2001, and the base body 1 abuts against and is fixed with the cover plate assembly 200. The fixing part 2 has the functions of limiting and guiding, the liquid injection auxiliary member 100 can be quickly installed at the liquid injection port 2001 by the cooperation of the fixing part 2 and the liquid injection port 2001, and when the fixing part 2 is inserted into the liquid injection port 2001, the liquid injection sheet 31 is also inevitably positioned at the inner ring of the liquid injection port 2001. The contact between the liquid pouring section 3 and the inner wall of the liquid pouring port 2001 and the contact between the base body 1 and the lid plate assembly 200 prevent the electrolyte in the battery from flowing out of the liquid pouring section 3. And the surface contact and fixation between the base body 1 and the cover plate assembly 200 can ensure the installation stability of the liquid injection auxiliary part 100 and the cover plate assembly 200. Alternatively, the base 1 and the cover assembly 200 may be fixed by bonding or ultrasonic welding.

Alternatively, the fixing portion 2 is interference-fitted to the pouring port 2001. Because of the friction between the injection head and the injection sheet 31, the injection head applies a force to the injection auxiliary member 100 away from the battery cover plate assembly 200 when inserted into the battery, and the interference fit can further ensure the installation stability between the injection auxiliary member 100 and the cover plate assembly 200.

Optionally, the height of the fixing part 2 is c, perpendicular to the plane of the substrate 1, and 2mm < c < 3mm. The height of the fixing portion 2 can be adjusted according to the depth of the liquid injection port 2001, so that a certain contact area between the fixing portion 2 and the inner wall of the liquid injection port 2001 is ensured, and the excessive height of the fixing portion 2 is avoided, so that the cost is increased, the assembly difficulty is increased, and the assembly efficiency is reduced.

Further, the axial centers of the pouring section 3 and the pouring outlet 2001 are overlapped so that the pouring head is inserted through the center of the pouring section 3, the interaction force between each pouring piece 31 and the outer surface of the pouring head is matched, and the fixing section 2 abuts against the inner wall of the pouring outlet 2001, that is, the fixing section 2 is also always coaxial with the pouring outlet 2001.

In this embodiment, the injection port 2001 is generally formed in a circular shape, so that the space through which the injection head can be inserted is as large as possible in the limited space, the injection part 3 is also formed in a circular shape, and each injection piece 31 is formed in a fan shape, and a plurality of injection pieces 31 are sequentially provided along the circumferential direction of the fixing part 2 so as to abut against each other to form the circular injection part 3.

Optionally, the radius of the liquid injection sheet 31 is a, the inner diameter of the fixing part 2 is b, and 1mm < b/2-a < 2mm. If the size of the injection port 2001 is large and the size of the injection head is small, the size of the injection piece 31 can be reduced appropriately in order to ensure that the injection piece 31 can effectively scrape off the electrolyte on the outer surface of the injection head. In addition, the size difference between the liquid injection sheet 31 and the fixing part 2 is convenient for processing the liquid injection sheet 31.

Alternatively, the plurality of liquid injection sheets 31 are formed by cutting. During manufacturing, the base body 1 and the liquid injection part 3 are integrated, proper sizes are designed according to actual conditions, then the liquid injection part 3 is marked out on the integrated part according to the sizes, and then the liquid injection part 3 is cut to form a plurality of liquid injection sheets 31.

Alternatively, the base 1 and the fixing portion 2 are integrally manufactured. As can be seen from the above, the fixing portion 2 is an annular fixing protrusion disposed on the base 1, and the integrated body may have the annular fixing protrusion on one side surface, and the liquid filling portion 3 is cut inside the annular fixing protrusion.

The embodiment also provides a battery, which comprises the liquid injection auxiliary part 100.

As shown in fig. 3 to 5, a liquid inlet 2001 is provided in the cap plate assembly 200 of the battery, and after the liquid inlet is completed, the liquid inlet 2011 is closed by a seal pin 300 from the outside of the battery, and the cap plate assembly 200 is welded to the seal pin 300. The injection aid 100 can be mounted on the injection port 2001 and located on the side of the cover plate assembly 200 facing the battery interior, i.e., when the fixing part 2 is inserted into the injection port 2001, the base body 1 will abut and be fixed on the side of the cover plate assembly 200 facing the battery interior. When the battery is injected with liquid, the liquid injection head sequentially passes through the liquid injection port 2001 and the liquid injection part 3, and after the liquid injection is completed, when the liquid injection head leaves the interior of the battery through the liquid injection part 3, the electrolyte on the outer surface of the battery is scraped away by the liquid injection sheet 31, and the electrolyte cannot be brought out of the liquid injection port 2001 to influence the subsequent welding effect.

The above embodiments have been described only the basic principles and features of the present invention, and the present invention is not limited by the above embodiments, and is not departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an annotate liquid auxiliary member, sets up in notes liquid mouth (2001) department of apron subassembly (200) of battery, its characterized in that, annotate the liquid auxiliary member and make by insulating elastic material, including base member (1) and the liquid portion of annotating (3) that are connected, annotate liquid portion (3) and include a plurality of notes liquid piece (31) that butt set up in proper order, it can stretch into adjacently to annotate the liquid head annotate between liquid piece (31), be provided with fixed part (2) on base member (1), fixed part (2) encircle and locate annotate the periphery of liquid piece (31), fixed part (2) can insert locate annotate in the liquid mouth (2001) and butt annotate the inner wall of liquid mouth (2001), base member (1) with apron subassembly (200) butt and fixed.

2. The priming aid of claim 1, wherein the fixing part (2) is an interference fit with the priming port (2001).

3. The injection aid according to claim 1, wherein the injection part (3) coincides with the axial center of the fixing part (2).

4. The liquid injection auxiliary member according to claim 1 or 3, wherein the liquid injection sheet (31) has a fan shape, and a plurality of liquid injection sheets (31) are abutted to form the circular liquid injection part (3).

5. Injection aid according to claim 4, characterized in that the curved edge of each injection sheet (31) is connected to the base body (1).

6. Priming aid according to claim 4, characterized in that the priming sheet (31) has a radius a and the fixing part (2) has an inner diameter b,1mm < b/2-a < 2mm.

7. The filling aid according to claim 1, characterized in that the height of the fixing part (2) perpendicular to the plane of the base body (1) is c,2mm < c < 3mm.

8. The filling aid according to claim 1, characterized in that the filling part (3) is slit to form a plurality of filling pieces (31).

9. The infusion aid according to claim 1, characterized in that the base body (1) and the fixing part (2) are manufactured in one piece.

10. A battery, characterized by comprising a liquid injection aid (100) according to any one of claims 1-9.