CN213278331U

CN213278331U - Liquid injection assembly of soft package liquid injection machine

Info

Publication number: CN213278331U
Application number: CN202021758373.2U
Authority: CN
Inventors: 周志远; 陈浩淞; 刘红尧
Original assignee: Dongguan Tec Rich Engineering Co Ltd
Current assignee: Dongguan Tec Rich Engineering Co Ltd
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2021-05-25
Anticipated expiration: 2030-08-21

Abstract

The utility model discloses a liquid injection assembly of a soft package liquid injection machine, which comprises a first diaphragm valve, a liquid injection cup, a second diaphragm valve and a liquid injection needle, wherein the liquid injection cup is provided with a liquid injection cup inlet, a liquid injection cup outlet, a piston rod, a first sealing ring and a second sealing ring, the liquid injection cup inlet is connected with the first diaphragm valve, the liquid injection cup outlet is connected with the second diaphragm valve, and the second diaphragm valve is connected with the liquid injection needle; the piston rod is arranged in the cavity of the liquid injection cup and can reciprocate up and down, and the piston rod and the liquid injection cup are sealed by a first sealing ring; annotate liquid cup entry and be located the side of annotating tip under the liquid cup other, annotate liquid cup export and be located the centre of annotating tip under the liquid cup, annotate the liquid cup entry and separate with the second sealing washer between the liquid cup export, the lower port of second sealing washer with annotate liquid cup export intercommunication, the beneficial effects of the utility model are that: the ascending and descending positions of the piston rod in the liquid injection cup are unchanged every time, so that the liquid injection amount of each time of liquid injection is constant, the liquid injection precision is high, and the equipment cost is low.

Description

Liquid injection assembly of soft package liquid injection machine

Technical Field

The utility model relates to a battery processing technology field, especially a liquid subassembly is annotated to soft package liquid machine.

Background

In the liquid injection process of the soft package battery, an electrolyte is required to be injected into a liquid injection cup by a liquid injection pump, then the electrolyte is introduced into the battery through a liquid injection needle by the liquid injection cup, and the amount of the electrolyte injected each time needs to be kept in the process so as to ensure the uniformity of the soft package battery with the same specification. Control through flow switch can increase equipment cost, also can produce measuring error after long-term the use, and current notes liquid cup has partial electrolyte to remain after the single is annotated, causes the electrolyte injection volume difference at every turn. The ceramic cup has a gap problem, and electrolyte can leak to cause the problem of cup clamping. Therefore, the liquid injection assembly of the existing soft package liquid injection machine needs to be improved so as to improve the liquid injection precision and the problem that the liquid injection cup is blocked when the soft package battery is injected with liquid.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is not enough to above-mentioned prior art, a liquid subassembly is annotated in soft package liquid machine is provided.

In order to solve the technical problem, the utility model discloses the technical scheme who takes is: a liquid injection assembly of a soft package liquid injection machine comprises a first diaphragm valve, a liquid injection cup, a second diaphragm valve and a liquid injection needle, wherein the liquid injection cup is provided with a liquid injection cup inlet, a liquid injection cup outlet, a piston rod, a first sealing ring and a second sealing ring; the piston rod is arranged in the cavity of the liquid injection cup and can reciprocate up and down, and the piston rod and the liquid injection cup are sealed by a first sealing ring; the inlet of the liquid injection cup is positioned beside the lower end part of the liquid injection cup, the outlet of the liquid injection cup is positioned in the middle of the lower end part of the liquid injection cup, the inlet of the liquid injection cup and the outlet of the liquid injection cup are separated by a second sealing ring, the lower port of the second sealing ring is communicated with the outlet of the liquid injection cup, and the upper port of the first sealing ring is communicated or separated with the inlet of the liquid injection cup through the up-and-down reciprocating motion of the piston rod.

In the technical scheme, the middle part of the lower end of the piston rod is provided with an ejection structure, and the ejection structure is over against the upper port of the first sealing ring.

In the technical scheme, the liquid injection cup is also provided with a clamping ring which is fixed in a cavity of the liquid injection cup and is positioned on the piston rod.

The utility model has the advantages that: the ascending and descending positions of the piston rod in the liquid injection cup are unchanged every time, so that the liquid injection amount of each time of liquid injection is constant, the liquid injection precision is high, and the equipment cost is low.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic sectional structure of the present invention.

Fig. 3 is an enlarged schematic view of a position a in fig. 2.

Reference numerals

10. A first diaphragm valve; 11. a diaphragm valve inlet I; 12. an outlet I of the diaphragm valve; 20. a liquid injection cup; 21. an inlet of the liquid injection cup; 22. an outlet of the liquid injection cup; 23. a piston rod; 231. an ejection structure; 24. a first seal ring; 25. a second seal ring; 26. a snap ring; 30. a second diaphragm valve; 31. a diaphragm valve inlet II; 32. an outlet II of the diaphragm valve; 40. injecting liquid needle; 41. an injection needle inlet; 42. and (4) an outlet of the injection needle.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1-3, the liquid injection assembly of the soft package liquid injection machine comprises a first diaphragm valve 10, a liquid injection cup 20, a second diaphragm valve 30 and a liquid injection needle 40, wherein the first diaphragm valve 10 is provided with a first diaphragm valve inlet 11 and a first diaphragm valve outlet 12, the liquid injection cup 20 is provided with a liquid injection cup inlet 21, a liquid injection cup outlet 22, a piston rod 23, a first sealing ring 24 and a second sealing ring 25, the second diaphragm valve 30 is provided with a second diaphragm valve inlet 31 and a second diaphragm valve outlet 32, and the liquid injection needle 40 is provided with a liquid injection needle inlet 41 and a liquid injection needle outlet 42.

The first diaphragm valve 10 is used for controlling electrolyte to enter the liquid injection cup 20, the first diaphragm valve inlet 11 of the first diaphragm valve 10 is connected with an external electrolyte pipeline to access the electrolyte, and the first diaphragm valve outlet 12 is communicated with the liquid injection cup inlet 21.

The liquid injection cup 20 is used for injecting electrolyte quantitatively, the piston rod 23 is arranged in the liquid injection cup 20 and can reciprocate up and down, a first sealing ring 24 is arranged between the piston rod 23 and the liquid injection cup 20 for sealing, the inlet 21 of the liquid injection cup is positioned beside the lower end part of the liquid injection cup 20, the outlet 22 of the liquid injection cup is positioned in the middle of the lower end part of the liquid injection cup 20, the inlet 21 of the liquid injection cup is separated from the outlet 22 of the liquid injection cup by a second sealing ring 25, the lower end opening of the second sealing ring 25 is communicated with the outlet 22 of the liquid injection cup, when no electrolyte exists in the liquid injection cup 20, the upper end opening of the first sealing ring 24 is blocked by the piston rod 23, only when the first diaphragm valve 10 is opened to inject the electrolyte into the liquid injection cup 20, the piston rod 23 is jacked up.

The second diaphragm valve 30 is used for controlling the conduction or the blockage of the liquid injection cup 20 and the liquid injection needle 40, the liquid injection cup outlet 22 is communicated with the second diaphragm valve inlet 31, and the second diaphragm valve outlet 32 is communicated with the liquid injection needle inlet 41.

The liquid injection needle 40 is used for injecting electrolyte into the soft package battery, and the liquid injection needle outlet 42 is inserted into the soft package battery for electrolyte injection.

Wherein, the middle part of the lower end of the piston rod 23 is provided with an ejection structure 231, the ejection structure 231 is over against the upper port of the first sealing ring 24, and the piston rod 23 can be better sealed and blocked when being pressed on the first sealing ring 24.

Wherein, a snap ring 26 is also arranged in the liquid injection cup 20, the snap ring 26 is fixed in the inner cavity of the liquid injection cup 20 and is positioned on the piston rod 23, and the snap ring 26 is used for preventing the piston rod 23 from excessively rising to be separated from the liquid injection cup 20.

The liquid injection assembly of the soft package liquid injection machine has the following use principle:

(1) opening the first diaphragm valve 10 and closing the second diaphragm valve 30, enabling the electrolyte to enter the liquid injection cup 20 from the first diaphragm valve 10, jacking the piston rod 23 under the hydraulic action of the electrolyte, and keeping the jacked height of the piston rod 23 constant and the dosage of the electrolyte in the liquid injection cup 20 constant under certain electrolyte hydraulic pressure;

(2) closing the first diaphragm valve 10, and inserting the liquid injection needle outlet 42 of the liquid injection needle 40 into the soft package battery to be injected with liquid;

(3) the second diaphragm valve 30 is opened, the electrolyte enters the soft package battery through the second diaphragm valve 30 and the liquid injection needle 40 under the action of the gravity of the piston rod 23 and the vacuum negative pressure in the soft package battery, when the ejection structure 231 at the lower end of the piston rod 23 is attached and sealed with the second sealing ring 25, the liquid injection cup 20 is separated from the liquid injection needle 40, the residual electrolyte in the liquid injection cup 20 cannot continuously flow out through the liquid injection needle 40, the second diaphragm valve 30 is closed, and the liquid injection is completed.

The position of the piston rod 23 is unchanged when the piston rod ascends and descends each time, the liquid injection amount is unchanged, and the liquid injection precision is high.

The above embodiments are merely illustrative and not restrictive, and all equivalent changes and modifications made by the methods described in the claims are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a soft package annotates liquid machine annotates liquid subassembly which characterized in that: the liquid injection cup is provided with a liquid injection cup inlet, a liquid injection cup outlet, a piston rod, a first sealing ring and a second sealing ring, wherein the liquid injection cup inlet is connected with the first diaphragm valve, the liquid injection cup outlet is connected with the second diaphragm valve, and the second diaphragm valve is connected with the liquid injection needle; the piston rod is arranged in the cavity of the liquid injection cup and can reciprocate up and down, and the piston rod and the liquid injection cup are sealed by a first sealing ring; the liquid injection cup inlet is located beside the lower end of the liquid injection cup, the liquid injection cup outlet is located in the middle of the lower end of the liquid injection cup, the liquid injection cup inlet and the liquid injection cup outlet are separated by a second sealing ring, the lower port of the second sealing ring is communicated with the liquid injection cup outlet, and the upper port of the first sealing ring is communicated with or separated from the liquid injection cup inlet through the up-and-down reciprocating motion of the piston rod.

2. The liquid injection assembly of the soft package liquid injection machine according to claim 1, characterized in that: and the middle part of the lower end of the piston rod is provided with an ejection structure, and the ejection structure is over against the upper port of the first sealing ring.

3. The liquid injection assembly of the soft package liquid injection machine according to claim 1, characterized in that: the liquid injection cup is further provided with a clamping ring, and the clamping ring is fixed in the cavity of the liquid injection cup and is positioned on the piston rod.