CN220233420U - Liquid pouring sleeve cup for battery - Google Patents
Liquid pouring sleeve cup for battery Download PDFInfo
- Publication number
- CN220233420U CN220233420U CN202321925495.XU CN202321925495U CN220233420U CN 220233420 U CN220233420 U CN 220233420U CN 202321925495 U CN202321925495 U CN 202321925495U CN 220233420 U CN220233420 U CN 220233420U
- Authority
- CN
- China
- Prior art keywords
- battery
- liquid injection
- needle tube
- injection needle
- soft sealing
- 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
- 239000007788 liquid Substances 0.000 title claims abstract description 118
- 238000002347 injection Methods 0.000 claims abstract description 100
- 239000007924 injection Substances 0.000 claims abstract description 100
- 238000007789 sealing Methods 0.000 claims abstract description 69
- 238000004804 winding Methods 0.000 claims description 23
- 239000012530 fluid Substances 0.000 claims 2
- 238000001802 infusion Methods 0.000 claims 2
- 238000005096 rolling process Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- 239000003792 electrolyte Substances 0.000 description 53
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000005192 partition Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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)
Abstract
The utility model discloses a battery liquid injection sleeve cup, which comprises a cup body with an inner cavity, wherein a soft sealing body is fixed at the bottom of the cup body; the bottom of the cup body is also provided with a liquid injection needle tube, the liquid injection needle tube penetrates through the soft sealing body, the upper end of the liquid injection needle tube is communicated with the inner cavity of the cup body, and the lower end of the liquid injection needle tube extends out of the soft sealing body. According to the battery liquid injection sleeve cup, the liquid injection needle tube penetrates through the soft sealing body, the bottom area of the soft sealing body is large, when the soft sealing body seals a battery, the area of the soft sealing body which can seal the battery is large, the soft sealing body and the battery are not required to be aligned with each other with high precision, and therefore the battery can be sealed efficiently, reliably and stably, the sealing effect is good, and the battery is more convenient to use.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a battery liquid injection sleeve cup.
Background
Cylindrical batteries have been widely used as one type of battery, such as 18650, 21700, and the like. The manufacturing process of the cylindrical battery mainly comprises the steps of winding a positive plate, a negative plate and a diaphragm into a cylindrical winding core, putting the winding core into a cylindrical shell, injecting electrolyte, and then sealing.
The operation of traditional injection electrolyte is that the electrolyte is injected from the injection port of the battery, the injected electrolyte enters into the reserved liquid storage space in the battery shell above the winding core, and then the electrolyte in the reserved liquid storage space in the battery shell is sunk and pumped into the winding core in a vacuumizing mode. Under this kind of operation, the liquid filling volume at every turn depends on the capacity of the liquid storage space reserved in the battery shell above the winding core, and the capacity of this liquid storage space is limited, and along with the requirement of battery capacity is higher and higher, the winding core takes up an increasingly larger place, and the liquid storage space is then smaller and smaller, so, leads to single liquid filling to be unable to satisfy the liquid filling volume requirement of whole battery, and the liquid filling volume of whole battery needs to divide into many times to pour into. The traditional repeated injection operation is complicated, and the time for injecting liquid is long; and, because the capacity of stock solution space is limited, less, electrolyte sprays the excessive easily when the evacuation, and leads to electrolyte loss, influences the liquid filling volume, simultaneously, the excessive electrolyte pollutes, corrodes the battery easily, increases the abluent degree of difficulty of follow-up.
For this reason, in the patent document of chinese patent application No. 202222399041.5, a battery liquid-filling sleeve cup is disclosed. The battery liquid injection sleeve cup comprises an annular cylinder body, wherein any end of the annular cylinder body is a battery shell connecting end, a partition plate is arranged in the annular cylinder body, an inner cavity of the annular cylinder body is divided into an upper cavity and a lower cavity through the partition plate, an electrolyte liquid guide pipe is connected to the partition plate, one end of the electrolyte liquid guide pipe is communicated with the upper cavity, and the other end of the electrolyte liquid guide pipe is inserted into the battery shell end. When the device works, the bottom of the annular cylinder body is propped against the top of the battery steel shell, the electrolyte liquid guide tube stretches into the battery steel shell from the liquid injection hole of the battery steel shell and is close to the bottom of the battery steel shell, and after the device is vacuumized, the electrolyte in the annular cylinder body is injected into the bottom of the battery steel shell from the electrolyte liquid guide tube. According to the battery liquid injection sleeve cup, electrolyte can be directly injected into the winding core at the bottom of the battery steel shell, the liquid injection of the whole battery can be completed by only one liquid injection operation, and the electrolyte injected into the bottom of the battery steel shell does not have the problem of splashing and overflowing; however, the annular cylinder body of the battery liquid injection sleeve cup is in rigid top contact with the battery shell, or a thin layer of sealing ring is preferably arranged between the annular cylinder body and the battery shell, the contact surfaces of the annular cylinder body, the battery shell and the sealing ring are small, once the annular cylinder body, the battery shell and the sealing ring do not realize high-precision alignment, the sealing of the battery shell is affected, the sealing performance of the annular cylinder body and the battery shell is poor, and the liquid injection effect is poor when the vacuum pumping is performed; and electrolyte in the flat-bottomed cylinder is difficult to pump out, so that the battery liquid injection amount is inaccurate and the consistency is poor.
Disclosure of Invention
The utility model aims to provide a battery liquid injection sleeve cup.
The technical scheme for realizing the aim of the utility model is as follows: the battery liquid injection sleeve cup is used for injecting liquid into a battery with a winding core, and comprises a cup body with an inner cavity, wherein a soft sealing body is fixed at the bottom of the cup body, and the width of the soft sealing body is limited by being capable of being covered at the top of the battery; the bottom of the cup body is also provided with a liquid injection needle tube, the liquid injection needle tube penetrates through the soft sealing body, the upper end of the liquid injection needle tube is communicated with the inner cavity of the cup body, the lower end of the liquid injection needle tube extends out of the soft sealing body, and the length of the liquid injection needle tube is limited by the fact that the liquid injection needle tube can extend into a winding core of a battery during liquid injection.
Further, the inner cavity is in an inverted cone shape, and the bottom of the inverted cone-shaped inner cavity is communicated with the upper end of the liquid injection needle tube.
Further, the bottom surface of the soft sealing body is a convex surface protruding downwards.
According to the battery liquid injection sleeve cup, when liquid is injected, the liquid injection needle tube stretches into the battery winding core from the liquid injection hole of the battery, and electrolyte is directly pumped into the winding core of the battery from the liquid injection needle tube in the process of carrying out liquid injection by vacuumizing the battery. In addition, as the liquid injection needle tube stretches into the battery winding core, when the lower end of the liquid injection needle tube is far away from the top of the battery, and electrolyte flows out of the liquid injection needle tube in the liquid injection process, the space for agitating after flowing out is limited due to the existence of the winding core; the electrolyte can be effectively prevented from splashing and overflowing when the electrolyte is injected under the condition that the electrolyte is far away from the top of the battery and the agitating space is limited, so that the quality of the electrolyte is greatly improved, and meanwhile, the safety of the electrolyte injection and the consistency of the electrolyte injection of each battery are enhanced.
According to the battery liquid injection sleeve cup, the soft sealing body is fixed at the bottom of the cup body, so that the bottom of the soft sealing body can be in contact with the top of a battery during liquid injection, and the top of the battery is further sealed. The soft structure of the soft sealing body is deformable, when the soft structure seals the top of the battery, the soft sealing body can realize sealing with the top of the battery through compression deformation, and compared with the soft sealing body which is in hard contact with the top of the battery, the soft sealing body has better sealing effect on the top of the battery. In the liquid injection process, when the battery tightness is better, the pressure difference between the battery communicated with the two ends of the liquid injection needle tube and the inner cavity can be effectively ensured during vacuumizing, so that electrolyte can be stably and reliably pumped into the battery by the liquid injection needle tube, the situation that the pressure difference between the battery communicated with the two ends of the liquid injection needle tube and the inner cavity is insufficient due to poor sealing of the top of the battery is avoided, the pumped force of the electrolyte is small, the pumped speed of the electrolyte is low, and even the electrolyte is not required to be pumped into the battery is avoided.
In addition, the liquid injection needle tube penetrates through the soft sealing body, the bottom area of the soft sealing body is large, and when the soft sealing body seals a battery, the soft sealing body can seal the battery in large area, and the soft sealing body and the battery are not required to be aligned with high precision, so that the battery can be sealed efficiently, reliably and stably, the sealing effect is good, and the battery is more convenient to use.
Drawings
Fig. 1 is a schematic view of the structure of a battery liquid-filling sleeve cup of the present utility model.
Description of the embodiments
The following describes the specific embodiments of the battery liquid injection sleeve cup according to the present utility model in detail with reference to the accompanying drawings:
as shown in fig. 1, a battery liquid injection sleeve cup is used for injecting liquid into a battery 10 with a winding core 101 inside, the battery liquid injection sleeve cup comprises a cup body 1 with an inner cavity 11, a soft sealing body 2 is fixed at the bottom of the cup body 1, and the width of the soft sealing body 2 is limited by being capable of covering the top of the battery 10; the bottom of the cup body 1 is also provided with a liquid injection needle tube 3, the liquid injection needle tube 3 penetrates through the soft sealing body 2, the upper end of the liquid injection needle tube 3 is communicated with the inner cavity 11 of the cup body 1, the lower end of the liquid injection needle tube 3 extends out of the soft sealing body 2, and the length of the liquid injection needle tube 3 is limited by the extension of the liquid injection needle tube 3 into a winding core of the battery 10.
According to the battery liquid injection sleeve cup, the inner cavity 11 of the cup body 1 is used as an electrolyte containing cavity, and the cup body 1 is used for containing the electrolyte; the soft sealing body 2 is used for ensuring sealing during liquid injection, the width of the soft sealing body 2 is larger than the diameter of the battery, and the width of the soft sealing body 2 is limited by being capable of being covered on the top of the battery 10; the liquid injection needle tube 3 is used as a liquid injection channel of electrolyte, the length of the liquid injection needle tube 3 is limited by the limit that the liquid injection needle tube 3 can extend into the winding core of the battery 10 during liquid injection, and preferably, the lower end of the liquid injection needle tube 3 is close to the bottom of the battery 10.
When the battery is filled with the liquid, the liquid filling needle tube 3 is inserted into the winding core of the battery 10 through the liquid filling hole of the battery; the bottom of the soft sealing body 2 is propped against the top of the battery to seal the top of the battery; electrolyte is poured into the inner cavity 11 of the cup body 1. Initially pouring electrolyte into the inner cavity 11 of the cup body 1, and under the capillary effect of the liquid injection needle tube 3, the electrolyte in the inner cavity 11 does not flow downwards; then, the battery is vacuumized, the inside of the battery is in a negative pressure state, and the pressure difference between the inside and the outside of the battery enables electrolyte in the inner cavity 11 of the cup body 1 to be pumped into the battery 10 through the electrolyte injection needle tube 3, so that the electrolyte injection of the battery is realized.
According to the battery liquid injection sleeve cup, when liquid is injected, the liquid injection needle tube 3 stretches into the battery winding core from the liquid injection hole of the battery, and electrolyte is directly pumped into the winding core of the battery from the liquid injection needle tube 3 in the process of vacuumizing the battery for liquid injection. In addition, as the liquid injection needle tube 3 extends into the battery winding core, when the lower end of the liquid injection needle tube 3 is far away from the top of the battery, and electrolyte flows out from the liquid injection needle tube 3 in the liquid injection process, the space for agitating after flowing out is limited due to the existence of the winding core; the electrolyte can be effectively prevented from splashing and overflowing when the electrolyte is injected under the condition that the electrolyte is far away from the top of the battery and the agitating space is limited, so that the quality of the electrolyte is greatly improved, and meanwhile, the safety of the electrolyte injection and the consistency of the electrolyte injection of each battery are enhanced.
According to the battery liquid injection sleeve cup, the soft sealing body 2 is fixed at the bottom of the cup body 1, so that the bottom of the soft sealing body 2 can be in contact with the top of a battery during liquid injection, and the top of the battery is further sealed. The soft structure of the soft sealing body 2 is deformable, when the soft structure seals the top of the battery, the soft structure can realize the sealing with the top of the battery through compression deformation, compared with the soft structure of the soft sealing body 2, the soft structure is in hard contact with the top of the battery, and the sealing effect on the top of the battery is better. In the liquid injection process, when the battery tightness is better, the pressure difference between the battery communicated with the two ends of the liquid injection needle tube 3 and the inner cavity 11 can be effectively ensured during vacuumizing, so that the electrolyte can be stably and reliably pumped into the battery by the liquid injection needle tube 3, the situation that the pressure difference between the battery communicated with the two ends of the liquid injection needle tube 3 and the inner cavity 11 is insufficient due to poor sealing of the top of the battery is avoided, the force of pumping the electrolyte is small, the pumping speed of the electrolyte is low, and even the electrolyte is not required to be pumped into the battery is avoided.
In addition, according to the battery liquid injection sleeve cup of the utility model, the liquid injection needle tube 3 passes through the soft sealing body 2, the bottom area of the soft sealing body 2 is large, when the soft sealing body 2 seals the battery 10, the area of the soft sealing body 2 for sealing the battery 10 is large, the soft sealing body 2 and the battery 10 are not required to be aligned with high precision, and the battery 10 can be sealed efficiently, reliably and stably, the sealing effect is good, and the use is more convenient.
In the battery liquid injection sleeve cup of the utility model, preferably, the inner cavity 11 is in an inverted cone shape, and the bottom of the inverted cone-shaped inner cavity 11 is communicated with the upper end of the liquid injection needle tube 3. The inner cavity 11 with the inverted cone shape is convenient for the electrolyte to flow down quickly, and meanwhile, the electrolyte in the inner cavity 11 can be ensured to flow out completely, so that on one hand, the waste of the electrolyte can be reduced; on the other hand, the control of the battery liquid injection amount can be facilitated, and the consistency of the battery liquid injection is improved.
In the battery liquid injection sleeve cup of the present utility model, preferably, the bottom surface of the soft sealing body 2 is a convex surface protruding downwards. The bottom surface of the soft sealing body 2 may be a plane or a convex surface protruding downward. Compared with the plane, the bottom surface of the soft sealing body 2 which is convex can extend into the battery, the contact surface between the soft sealing body and the top of the battery is large, and the sealing effect on the battery is better.
The battery liquid injection sleeve cup is characterized in that the soft sealing body 2 is a soft material structure body.
It should be understood by those skilled in the art that the present utility model may be embodied in many different forms without departing from the spirit or essential characteristics thereof.
Claims (3)
1. The utility model provides a battery annotates liquid sleeve cup for annotate liquid to the battery that inside has a core of rolling up, its characterized in that: the battery comprises a cup body with an inner cavity, wherein a soft sealing body is fixed at the bottom of the cup body, and the width of the soft sealing body is limited by being covered on the top of the battery; the bottom of the cup body is also provided with a liquid injection needle tube, the liquid injection needle tube penetrates through the soft sealing body, the upper end of the liquid injection needle tube is communicated with the inner cavity of the cup body, the lower end of the liquid injection needle tube extends out of the soft sealing body, and the length of the liquid injection needle tube is limited by the fact that the liquid injection needle tube can extend into a winding core of a battery during liquid injection.
2. The battery fluid infusion set according to claim 1, wherein: the inner cavity is in an inverted cone shape, and the bottom of the inverted cone-shaped inner cavity is communicated with the upper end of the liquid injection needle tube.
3. The battery fluid infusion set according to claim 1, wherein: the bottom surface of the soft sealing body is a convex surface protruding downwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321925495.XU CN220233420U (en) | 2023-07-21 | 2023-07-21 | Liquid pouring sleeve cup for battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321925495.XU CN220233420U (en) | 2023-07-21 | 2023-07-21 | Liquid pouring sleeve cup for battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220233420U true CN220233420U (en) | 2023-12-22 |
Family
ID=89183703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321925495.XU Active CN220233420U (en) | 2023-07-21 | 2023-07-21 | Liquid pouring sleeve cup for battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220233420U (en) |
-
2023
- 2023-07-21 CN CN202321925495.XU patent/CN220233420U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |