阅读说明：本技术 注液组件及注液机 (annotate liquid subassembly and annotate liquid machine ) 是由 吉纯 曾庆苑 王文华 李乾乾 于 2019-09-09 设计创作，主要内容包括：本发明公开了一种注液组件及注液机,该注液组件包括：注射件；及辅助插入件,所述辅助插入件包括收集体及用于插入注液孔的插入体,所述收集体设有收集腔及与所述收集腔连通的第一开口和第二开口,所述插入体设有引流通道,所述收集体与所述插入体连接,所述引流通道通过所述第二开口与所述收集腔连通,且所述引流通道与所述收集腔配合形成供注射件插设的插设通道,所述收集体在所述第一开口的横截面积大于所述注液孔围设的面积。该注液组件可以对溢出的电解液或者是由注射件带出的电解液进行收集,进而不会对电池的外观以及后续注液孔焊接时的拍照识别带来影响,提升电池的制造效率。(The invention discloses a liquid injection assembly and a liquid injection machine, wherein the liquid injection assembly comprises: an injection member; and the auxiliary insertion piece comprises a collection body and an insertion body, wherein the insertion body is used for inserting the liquid injection hole, the collection body is provided with a collection cavity and a first opening and a second opening which are communicated with the collection cavity, the insertion body is provided with a drainage channel, the collection body is connected with the insertion body, the drainage channel is communicated with the collection cavity through the second opening, the drainage channel is matched with the collection cavity to form an insertion channel for the insertion of the injection piece, and the cross sectional area of the first opening is larger than the area enclosed by the liquid injection hole. This annotate liquid subassembly can be collected the electrolyte that overflows or be taken over by the injection piece, and then can not bring the influence to the outward appearance of battery and the follow-up discernment of shooing when annotating the liquid hole welding, promotes the manufacturing efficiency of battery.)

1. A priming assembly, comprising:

An injection member; and

The utility model discloses a liquid injection hole, including the collection body, the supplementary plug-in components, the collection body is equipped with collect the chamber and with collect the first opening and the second opening of chamber intercommunication, the plug-in components is equipped with drainage channel, collect the body with the plug-in components is connected, drainage channel passes through the second opening with collect the chamber intercommunication, just drainage channel with collect the chamber cooperation and form and supply the injection piece to insert establish the passageway, the collection body is in first open-ended cross-sectional area is greater than annotate the liquid hole and enclose the area of establishing.

2. The priming assembly of claim 1, wherein a cross-sectional area of the collector at the first opening is greater than a cross-sectional area of the collector at the second opening.

3. The priming assembly of claim 2, wherein the cross-sectional area of the collector decreases in a direction from the first opening to the second opening.

4. The priming assembly of claim 3, wherein the auxiliary insert is funnel-shaped.

5. The priming assembly of claim 1, further comprising a sealing member for sealing a gap formed between the injection member and the insertion channel.

6. The priming assembly of claim 5, wherein the auxiliary insert is a resilient member.

7. The priming assembly of claim 5, wherein the side wall of the collection chamber includes a pressure bearing face for abutting against the sealing member, an area of an end face of the sealing member for abutting against the pressure bearing face being less than or equal to an area of the pressure bearing face, the pressure bearing face being provided with the second opening.

8. The priming assembly of claim 7, wherein the collector is in the shape of a circular truncated cone, the first opening being disposed at a large end of the collector, and the second opening being disposed at a small end of the collector.

9. The liquid injection assembly according to any one of claims 1 to 8, further comprising an anti-corrosion coating applied to an inner wall of the insertion passage.

10. An injection machine comprising the priming assembly of any one of claims 1 to 9.

Technical Field

the invention relates to the technical field of batteries, in particular to a liquid injection assembly and a liquid injection machine.

Background

In the liquid injection process of the aluminum-shell battery, the back suction type vacuum liquid injection is generally adopted, a liquid injection needle is inserted into a liquid injection hole on a shell of the aluminum-shell battery for liquid injection, and the liquid injection needle is automatically drawn out after the liquid injection amount reaches the target required amount.

However, the conventional liquid injection device is easy to corrode the shell of the battery in the injection process, which affects the appearance of the battery and the photographing identification during the subsequent welding of the liquid injection hole, and reduces the manufacturing efficiency.

Disclosure of Invention

On the basis, aiming at the problems that the traditional liquid injection equipment is easy to corrode the shell of the battery in the injection process, the appearance of the battery and the photographing recognition during the welding of the subsequent liquid injection hole are influenced, and the manufacturing efficiency is reduced, a liquid injection assembly and a liquid injection machine are provided, wherein the liquid injection assembly can collect overflowed electrolyte or electrolyte brought out by an injection piece, so that the shell of the battery cannot be corroded, the appearance of the battery and the photographing recognition during the welding of the subsequent liquid injection hole cannot be influenced, and the manufacturing efficiency of the battery is improved; this annotate liquid machine includes above-mentioned notes liquid subassembly, therefore, this annotate liquid machine possesses the advantage that annotates liquid efficient.

The specific technical scheme is as follows:

In one aspect, the present application relates to a priming assembly, comprising: an injection member; and the auxiliary insertion piece comprises a collection body and an insertion body, wherein the insertion body is used for inserting the liquid injection hole, the collection body is provided with a collection cavity and a first opening and a second opening which are communicated with the collection cavity, the insertion body is provided with a drainage channel, the collection body is connected with the insertion body, the drainage channel is communicated with the collection cavity through the second opening, the drainage channel is matched with the collection cavity to form an insertion channel for the insertion of the injection piece, and the cross sectional area of the first opening is larger than the area enclosed by the liquid injection hole.

When the liquid injection assembly is used, the insertion body is inserted into the liquid injection hole of the battery, the injection piece is inserted into the insertion channel, and electrolyte is injected into the shell of the battery through the injection piece or the injection piece injects electrolyte into the shell of the battery through the drainage channel; further, because the collection body is in first open-ended cross-sectional area is greater than annotate the liquid hole and enclose the area of establishing, consequently, when the injection piece was extracted, electrolyte along with the injection piece is taken away or can be collected in collecting the intracavity along annotating the electrolyte that the liquid hole spilled over because of the reason of the internal and external existence pressure differential of casing of battery, and then avoid electrolyte to cause the corruption to the casing of battery, when the internal and external pressure differential of casing of battery reached the equilibrium, collect the electrolyte of intracavity and arrange into the casing of battery along drainage channel, and then can not bring the influence to the outward appearance of battery and the follow-up discernment of shooing when annotating the liquid hole welding, promote the manufacturing efficiency of battery, and can reduce the waste of electrolyte, improve the liquid volume of once annotating.

The technical solution is further explained below:

In one embodiment, the cross-sectional area of the collector at the first opening is greater than the cross-sectional area of the collector at the second opening.

In one embodiment, the cross-sectional area of the collector decreases gradually in a direction from the first opening to the second opening.

in one embodiment, the auxiliary insert is funnel-shaped.

In one embodiment, the liquid injection assembly further comprises a sealing member for sealing a gap formed between the injection member and the insertion channel. In one embodiment, the auxiliary insert is a resilient member.

In one embodiment, the side wall of the collecting chamber comprises a pressure-bearing face for abutment with the seal, the area of the end face of the seal for abutment with the pressure-bearing face being smaller than or equal to the area of the pressure-bearing face, the pressure-bearing face being provided with the second opening.

In one embodiment, the collector is in a circular truncated cone shape, the first opening is opened at the large end of the collector, and the second opening is opened at the small end of the collector.

In one embodiment, the liquid injection assembly further comprises an anti-corrosion coating, and the anti-corrosion coating is coated on the inner wall of the insertion channel.

In another aspect, the present application further relates to an injection machine including the liquid injection assembly in any of the above embodiments.

when the injection machine is used, the insertion body is inserted into the liquid injection hole of the battery, the injection piece is inserted into the insertion channel, and electrolyte is injected into the shell of the battery through the injection piece or the injection piece injects electrolyte into the shell of the battery through the drainage channel; further, because the collection body is in first open-ended cross-sectional area is greater than annotate the liquid hole and enclose the area of establishing, consequently, when the injection piece was extracted, electrolyte along with the injection piece is taken away or can be collected in collecting the intracavity along annotating the electrolyte that the liquid hole spilled over because of the reason of the internal and external existence pressure differential of casing of battery, and then avoid electrolyte to cause the corruption to the casing of battery, when the internal and external pressure differential of casing of battery reached the equilibrium, collect the electrolyte of intracavity and arrange into the casing of battery along drainage channel, and then can not bring the influence to the outward appearance of battery and the follow-up discernment of shooing when annotating the liquid hole welding, promote the manufacturing efficiency of battery, and can reduce the waste of electrolyte, improve the liquid volume of once annotating.

Drawings

FIG. 1 is a schematic structural view of a liquid injection assembly in one embodiment;

FIG. 2 is an exploded view of the infusion assembly of FIG. 1;

FIG. 3 is a schematic structural view of a liquid injection assembly in another embodiment;

FIG. 4 is an exploded view of the infusion assembly of FIG. 3;

FIG. 5 is a schematic view of the assembly of the electrolyte injection assembly with the housing of the battery;

Fig. 6 is a schematic structural view of a case of the battery.

description of reference numerals:

100. a liquid injection assembly; 110. an injection member; 120. an auxiliary insert; 122. an insert body; 1222. a drainage channel; 124. a collector; 1242. a collection chamber; 1244. a first opening; 1246. a second opening; 130. inserting the channel; 140. a pressure bearing face; 200. a housing for the battery; 210. and a liquid injection hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

It will be understood that when an element is referred to as being "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 "secured to" 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. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

It will be understood that when an element is referred to as being "secured to" another element, it can be integral with the other element or can be removably connected to the other element.

unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Further, it is to be understood that, in the present embodiment, the positional relationships indicated by the terms "lower", "upper", "front", "rear", "left", "right", "inner", "outer", "top", "bottom", "one side", "the other side", "one end", "the other end", and the like are based on the positional relationships shown in the drawings; the terms "first," "second," and the like are used herein to distinguish one structural element from another. These terms are merely for convenience in describing the present invention and for simplicity in description, and are not to be construed as limiting the present invention.

As shown in fig. 1 to 4, an injection assembly 100 in an embodiment includes: the injection part 110 and the auxiliary insertion part 120, the auxiliary insertion part 120 includes a collection body 124 and an insertion body 122 for inserting into the injection hole 210, the collection body 124 is provided with a collection cavity 1242 and a first opening 1244 and a second opening 1246 which are communicated with the collection cavity 1242, the insertion body 122 is provided with a drainage channel 1222, the collection body 124 is connected with the insertion body 122, the drainage channel 1222 is communicated with the collection cavity 1242 through the second opening 1246, the drainage channel 1222 and the collection cavity 1242 are matched to form an insertion channel 130 for the injection part 110 to be inserted, and the cross-sectional area of the collection body 124 at the first opening 1244 is larger than the area surrounded by the injection hole 210.

When the injection assembly 100 is used, the insert 122 is inserted into the injection hole 210 of the battery, the injection member 110 is inserted into the insertion channel 130, and the electrolyte is injected into the case 200 of the battery through the injection member 110 or the injection member 110 is injected into the case 200 of the battery through the drainage channel 1222; further, because the cross-sectional area of the collecting body 124 at the first opening 1244 is larger than the area surrounded by the liquid injection hole 210, when the injection member 110 is pulled out, the electrolyte brought out along with the injection member 110 or the electrolyte overflowed along the liquid injection hole 210 due to the pressure difference existing between the inside and the outside of the casing 200 of the battery can be collected in the collecting cavity 1242, thereby avoiding the corrosion of the casing 200 of the battery caused by the electrolyte, when the pressure difference between the inside and the outside of the casing 200 of the battery reaches balance, the electrolyte in the collecting cavity 1242 is discharged into the casing 200 of the battery along the drainage channel 1222, thereby not affecting the appearance of the battery and the photographing identification during the welding of the subsequent liquid injection hole 210, improving the manufacturing efficiency of the battery, reducing the waste of the electrolyte, improving the primary liquid injection amount, and improving the liquid injection efficiency.

As shown in fig. 1 and fig. 2, on the basis of the above-mentioned embodiment, in order to facilitate the collection of the electrolyte in the collection chamber 1242 or to facilitate the liquid in the collection chamber 1242 to flow back into the case 200 of the battery, in this embodiment, the cross-sectional area of the collection body 124 at the first opening 1244 is larger than that of the collection body 124 at the second opening 1246, and at this time, the size at the first opening 1244 is relatively large, which can improve the reliability of collecting the electrolyte; further, the width of the collection cavity 1242 in the direction from the first opening 1244 to the second opening 1246 has a decreasing trend, so as to facilitate the backflow of the electrolyte; on the basis of the present embodiment, the cross-sectional area of the collecting body 124 gradually decreases along the direction from the first opening 1244 to the second opening 1246, and at this time, the width of the collecting cavity 1242 in the direction from the first opening 1244 to the second opening 1246 gradually decreases to form a slope, which facilitates the backflow of the electrolyte; specifically, the auxiliary insert 120 is funnel-shaped, and the funnel-shaped auxiliary insert 120 can achieve both the collection of the electrolyte and the backflow of the electrolyte. In this embodiment, the diameter of the first opening 1244 is 15mm to 30mm, the outer diameter of the insertion body 122 is 3.5mm to 4.5mm, the inner diameter of the insertion body 122 is 3mm to 3.5mm, and the length of the insertion body 122 is 3mm to 10 mm.

Further, since the interior of the case is required to be vacuumized before the electrolyte is injected into the case 200 of the battery, in order to ensure the sealing performance of the interior of the case 200 of the battery and to allow a sufficient amount of pressure difference to exist between the interior and the exterior of the case 200 of the battery, the electrolyte injection assembly 100 further includes a sealing member for sealing a gap formed between the injection member 110 and the insertion passage 130, and at this time, the sealing performance between the insertion passage 130 and the case 200 of the battery is ensured by the sealing member; specifically, the sealing member may be a rubber member, and may be a rubber sleeve that allows the injection member 110 to be self-carried, and when the injection member 110 is inserted into the insertion passage 130, the rubber sleeve seals a gap formed between the injection member 110 and the insertion passage 130. On the basis of this embodiment, in order to facilitate the installation of the sealing member and improve the reliability of the sealing member, the auxiliary insert 120 is an elastic member, and at this time, the auxiliary insert 120 may be forced to deform by interference fit between the sealing member and the auxiliary insert 120, so as to improve the stability of installing the sealing member on the one hand and the reliability of the sealing member sealing the gap formed between the injection member 110 and the insertion passage 130 on the other hand. In particular, the auxiliary insert 120 may be a rubber member.

As shown in fig. 3 and 4, of course, when the auxiliary insert 120 itself is made of hard material, such as glass or metal material coated with corrosion-resistant coating, in order to facilitate the installation of the sealing member and improve the reliability of the sealing member, in another embodiment, the side wall of the collecting cavity 1242 includes a pressure-bearing face 140 for abutting against the sealing member, the area of the end face of the sealing member for abutting against the pressure-bearing face 140 is smaller than or equal to the area of the pressure-bearing face 140, and the pressure-bearing face 140 is provided with a second opening 1246, so that, when installing, the sealing member is disposed on the pressure-bearing face 140, at this time, since the auxiliary insert 120 itself is made of hard material, it is not easy to deform itself, and if it is configured like a funnel interface, at this time, the sealing member is difficult to be installed in cooperation with the inner wall; on the basis of this embodiment, the collecting body 124 is in a circular truncated cone shape, the large end of the collecting body 124 is provided with a first opening 1244, the small end of the collecting body 124 is provided with a second opening 1246, the end cover of the battery case 200 is provided with a mounting hole for accommodating the small end of the collecting body 124, and the bottom wall of the mounting hole is provided with the liquid injection hole 210. Specifically, the large end of the collection body 124 refers to the end of the collection body 124 with the larger outer diameter in the circular truncated cone shape, and the small end of the collection body 124 refers to the end of the collection body 124 with the smaller outer diameter in the circular truncated cone shape, in this embodiment, the area enclosed by the second opening 1246 is smaller than the area enclosed by the liquid injection hole 210.

On the basis of any of the above embodiments, the liquid injection assembly 100 further includes an anti-corrosion coating layer coated on the inner wall of the insertion passage 130, so that the electrolyte is prevented from corroding the auxiliary insert 120 by providing the anti-corrosion coating layer; specifically, the anti-corrosion coating is an epoxy anti-corrosion coating or a scale anti-corrosion coating.

As shown in fig. 5 and 6, a mounting hole is further formed in the end cap of the battery, a liquid injection hole 210 is formed in the bottom wall of the mounting hole, and after the injection is completed, the liquid injection hole 210 is sealed by providing a sealing cover in the mounting hole; in this embodiment, the diameter of the mounting hole is 7mm to 10mm, and the diameter of the liquid injection hole 210 is 4mm to 6mm, so that when the mounting hole is in this range, the pressure difference between the inside and the outside of the case 200 of the battery can be quickly balanced, and the sealing is convenient.

An embodiment also relates to an injection machine, which comprises the liquid injection assembly 100 in any one of the above embodiments.

When the injection machine is used, the insert 122 is inserted into the injection hole 210 of the battery, the injection member 110 is inserted into the insertion passage 130, and the injection member 110 injects the electrolyte into the case 200 of the battery or the injection member 110 injects the electrolyte into the case 200 of the battery through the drainage passage 1222; further, because the cross-sectional area of the collecting body 124 at the first opening 1244 is larger than the area surrounded by the liquid injection hole 210, when the injection member 110 is pulled out, the electrolyte brought out along with the injection member 110 or the electrolyte overflowed along the liquid injection hole 210 due to the pressure difference existing between the inside and the outside of the case 200 of the battery can be collected in the collecting cavity 1242, thereby avoiding the corrosion of the electrolyte to the case 200 of the battery, when the pressure difference between the inside and the outside of the case 200 of the battery reaches a balance, the electrolyte in the collecting cavity 1242 is discharged into the case 200 of the battery along the drainage channel 1222, thereby not affecting the appearance of the battery and the photographing identification during the subsequent welding of the liquid injection hole 210, and improving the manufacturing efficiency of the battery.

the technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.