CN203536513U

CN203536513U - Positive suction type lithium ion battery filling box

Info

Publication number: CN203536513U
Application number: CN201320601776.XU
Authority: CN
Inventors: 范浩杰; 张经虎
Original assignee: Shandong Realforce Group New Energy Science And Technology Co Ltd
Current assignee: Shandong Realforce Group New Energy Science And Technology Co Ltd
Priority date: 2013-09-28
Filing date: 2013-09-28
Publication date: 2014-04-09
Anticipated expiration: 2023-09-28

Abstract

The utility model provides a positive suction type lithium ion battery filling box which comprises an electrolyte buffer tank and a filling box, wherein the electrolyte buffer tank is provided with a liquid inlet pipe and a liquid outlet pipe; the filling box is provided with a liquid inlet pipe; the liquid outlet pipe on the electrolyte buffer tank is connected with the liquid inlet pipe of the filling box; a vacuum tube, an ammonia tube and a pressure gage are arranged on the electrolyte buffer tank and the filling box; a filling pipe of the electrolyte buffer tank is at the top of the electrolyte buffer tank, and the liquid outlet pipe is arranged at the bottom of the electrolyte buffer tank; each of the filling pipe, the vacuum tube, the ammonia tube, the liquid outlet pipe and the liquid inlet pipe is provided with a valve; the vacuum tube is connected with a vacuum source and the ammonia tube is connected with an ammonia source respectively. By using the vacuum source and the ammonia source, vacuumization and ammonia filling are realized. The positive suction type lithium ion battery filling box provided by the utility model is simple in structure, simple and easy to manufacture and convenient to maintain; in addition, the raw materials are cheap, thereby obviously reducing the enterprise cost.

Description

A kind of positive suction lithium ion battery liquid injection case

Technical field

The utility model belongs to lithium ion battery and manufactures field, is specifically related to a kind of positive suction lithium ion battery liquid injection case.

Background technology

Lithium ion battery is as a kind of novel energy, because of it, to possess quality light, capacity is large, life-span, long advantage obtained social extensive concern, also firmly get consumer's favor, yet lithium ion battery need possess the feature of high security, therefore the manufacturing process of lithium ion battery is had relatively high expectations, each link needs strict operation, in the manufacturing process of lithium ion battery, the fluid injection operation of lithium ion battery is the most important operation during lithium ion battery is produced, the quality of fluid injection directly determines the capacity of battery, life-span and fail safe, and directly affect the quality degree of battery, yet existing liquid-injection equipment is in producing 18650-1800 type cell process, conventionally adopt inverse inhalation type liquid-injection equipment, but inverse inhalation type liquid-injection equipment is because of itself defect, in the process of using, there is a lot of problems, for example: 1, its electrolyte liquid permeability of existing inverse inhalation type filling machine is poor, therefore the sepage time that need to be longer, directly affect production efficiency, increase cost, 2, inverse inhalation type liquid injecting box is thought using production process need to use special-purpose hand basket to coordinate inverse inhalation type to boil also, inconvenient operation, personnel demand is many, cause waste of human resource, 3, use inverse inhalation type liquid injecting box to make lithium ion battery aerial open-assembly time long, affected battery performance.

Utility model content

For solving the defect of above-mentioned prior art; the utility model provides a kind of easy to operate, simple in structure, liquid-injection equipment with good sepage performance; can greatly increase production efficiency, reduce the wasting of resources; and because of the design feature of himself; the lithium battery that can adequately protect, can not affect battery efficiency because of battery open-assembly time.

For achieving the above object, the utility model discloses a kind of positive suction lithium ion battery liquid injection case, comprise electrolyte buffer tank and liquid injecting box, wherein on electrolyte buffer tank, be provided with feed tube and drain pipe, on liquid injecting box, be provided with feed tube, the drain pipe on electrolyte buffer tank is connected with the feed tube on liquid injecting box; On electrolyte buffer tank and liquid injecting box, be also all provided with vacuum tube, ammonia pipe and Pressure gauge.

Further, the liquid injection pipe on described electrolyte buffer tank is positioned at the end face of electrolyte buffer tank, and drain pipe is positioned at the bottom surface of electrolyte buffer tank.

Further, on described liquid injection pipe, vacuum tube, ammonia pipe, drain pipe, feed tube, be equipped with valve.

Further, described vacuum tube and ammonia pipe are connected with vacuum source and ammonia source, by vacuum source and ammonia source, reach the object that vacuumizes, fills ammonia.

Accompanying drawing explanation

Fig. 1, a kind of positive suction lithium battery liquid injecting box structure chart.

Fig. 2, liquid injecting box structure perspective view.

Fig. 3, electrolyte buffer tank stereogram.

Embodiment

For the utility model is described further, below in conjunction with accompanying drawing 1, Fig. 2, Fig. 3, the utility model is described further: a kind of positive suction lithium ion battery liquid injection case, comprise electrolyte buffer tank and liquid injecting box, wherein on electrolyte buffer tank, be provided with feed tube and drain pipe, on liquid injecting box, be provided with feed tube, the drain pipe on electrolyte buffer tank is connected with the feed tube on liquid injecting box; On electrolyte buffer tank and liquid injecting box, be provided with vacuum tube, ammonia pipe and Pressure gauge, wherein the liquid injection pipe on electrolyte buffer tank is positioned at the end face of electrolyte buffer tank, drain pipe is positioned at the bottom surface of electrolyte buffer tank, and be equipped with valve on aforesaid liquid injection pipe, vacuum tube, ammonia pipe, drain pipe, feed tube, in addition, vacuum tube and ammonia pipe are connected with vacuum source and ammonia source, by vacuum source and ammonia source, reach the object that vacuumizes, fills ammonia.

Below in conjunction with embodiment, the utility model is further elaborated.

Embodiment:

1), the battery that needs fluid injection is put in liquid injecting box, then opens the vacuum tube valve of electrolyte electrolyte buffer tank, electrolyte buffer tank is vacuumized, when electrolyte buffer tank reaches after vacuum set point, vacuum tube valve is closed;

2), open electrolyte buffer tank top liquid injection hole valve, electrolyte is added in electrolyte buffer tank, after the electrolyte in electrolyte buffer tank reaches certain value, close liquid injection hole valve;

3), open the vacuum tube valve on liquid injecting box, liquid injecting box is vacuumized, when liquid injecting box is negative pressure state, vacuum tube valve is closed, then the fluid hole valve of opening inlet opening valve on liquid injecting box and electrolyte buffer tank below, now, electrolyte starts in pipeline flows to liquid injecting box; And then open the nitrogen tube valve on electrolyte buffer tank, and to electrolyte buffer tank, add malleation, thereby make electrolyte, be to flow to low pressure place from high pressure all the time; Electrolyte in tank body is in pipeline flow-direction fluid injection casing, and liquid feeding is closed all valves after designated value, and liquid feeding finishes;

4), the gas in liquid injecting box is replaced: first open the vacuum tube valve of liquid injecting box, liquid injecting box is vacuumized, close vacuum tube valve after being extracted into required value; Then the nitrogen tube valve of opening liquid injecting box, fills ammonia to liquid injecting box, closes nitrogen tube valve after ammonia is charged to required value; Circulate above-mentioned vacuum and the displacement of ammonia, complete to fluid injection, it should be noted that: time swap and the number of times of vacuum and ammonia have determined reservoir quantity, need carry out according to the requirement of battery the displacement of vacuum and ammonia;

5). after fluid injection completes, electrolyte need to be passed back in electrolyte buffer tank, its concrete operations mode is: the vacuum tube valve of opening buffer tank top, electrolyte buffer tank is vacuumized, after being extracted into vacuum set point, vacuum tube valve is closed, now in buffer tank, be negative pressure state, and then open inlet opening valve on liquid injecting box and the fluid hole valve of electrolyte buffer tank, then open the nitrogen tube valve on liquid injecting box, to liquid injecting box, add malleation, now, electrolyte auto back in liquid injecting box passes in electrolyte buffer tank, after passback, close all valves.

Through practical application, the utility model obviously has the following advantages: the utility model relatively and inverse inhalation type liquid injecting box, solved the problem of being inverted bleed difficulty and imbibition difficulty, shortened the battery sepage time simultaneously, greatly improved production efficiency (note: utilizing its quantum of output of equipment of the utility model made is 570/10min, calculated with 20 hours full-time employment time, positive suction liquid injecting box output 68400/ day), the utility model has solved simultaneously affects reservoir quantity problem accurately because of pressure, the utility model is simple in structure, make simple and easy, easy to maintenance, material cheaply can significantly reduce entreprise cost.

Claims

1. a positive suction lithium ion battery liquid injection case, comprise electrolyte buffer tank and liquid injecting box, wherein on electrolyte buffer tank, be provided with feed tube and drain pipe, on liquid injecting box, be provided with feed tube, drain pipe on electrolyte buffer tank is connected with the liquid injection pipe on liquid injecting box, on described electrolyte buffer tank and liquid injecting box, be also all provided with vacuum tube, ammonia pipe and Pressure gauge, on described liquid injection pipe, vacuum tube, ammonia pipe, drain pipe, feed tube, be equipped with valve.

2. a kind of positive suction lithium ion battery liquid injection case according to claim 1, is characterized in that: the liquid injection pipe on described electrolyte buffer tank is positioned at the end face of electrolyte buffer tank, and drain pipe is positioned at the bottom surface of electrolyte buffer tank.