CN107968185B

CN107968185B - Efficient vacuum electrolyte injection mechanism for lithium ion battery

Info

Publication number: CN107968185B
Application number: CN201711184040.6A
Authority: CN
Inventors: 王勇军; 李保福
Original assignee: Huizhou Huawei Electromechanical Equipment Co ltd
Current assignee: Huizhou Huawei Electromechanical Equipment Co ltd
Priority date: 2017-11-23
Filing date: 2017-11-23
Publication date: 2020-11-03
Anticipated expiration: 2037-11-23
Also published as: CN107968185A

Abstract

The invention discloses an efficient lithium ion battery vacuum electrolyte injection mechanism which comprises a support and a driving cylinder fixedly arranged on a side plate of the support, wherein the support is provided with a groove, a push rod of the driving cylinder penetrates through the side wall of the support and extends into the groove of the support, a rear pressing plate is arranged at the top of the push rod of the driving cylinder, and a front pressing plate opposite to the rear pressing plate is arranged in the groove. The efficient lithium ion battery vacuum electrolyte injection mechanism has the advantages of simple structure, suitability for injecting electrolyte into lithium ion batteries with different specifications and sizes, convenience in disassembly, maintenance, cleaning and high efficiency, and shortens the waiting time for discharging the electrolyte and the bad pollution and corrosion caused by slow discharging of the electrolyte due to quick discharging of the electrolyte, thereby realizing vacuum electrolyte injection and high-efficiency electrolyte injection.

Description

Efficient vacuum electrolyte injection mechanism for lithium ion battery

Technical Field

The invention belongs to the technical field of battery production and processing equipment, and particularly relates to a high-efficiency vacuum electrolyte injection mechanism for a lithium ion battery.

Background

At present, the electrolyte injection process in the lithium ion battery industry generally comprises manual electrolyte injection and automatic electrolyte injection, and the two specific operations are that the manual electrolyte injection is to place the battery into a special turnover basket, align an electrolyte needle nozzle into a positive air bag opening and start the electrolyte injection. The automatic equipment is used for injecting electrolyte, namely, a battery is placed on a mechanism of the automatic equipment, the equipment moves the mechanism carrying the battery to an electrolyte injection station, a suction nozzle sucks the air bag, a needle nozzle for injecting the electrolyte extends into the edge of the air bag, and the electrolyte injection is started. The electrolyte is injected into the battery under the condition of no external force, so that the problems of difficult electrolyte injection, large bad proportion of battery pollution, corrosion and the like caused by difficult electrolyte injection, low production efficiency and the like exist.

In view of the above problems, it is necessary to develop an electrolyte injection mode for a lithium ion battery, which is fast in electrolyte injection and high in production efficiency, so as to improve the production efficiency and the qualification rate.

Disclosure of Invention

The invention aims to provide an efficient vacuum electrolyte injection mechanism of a lithium ion battery, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an electrolyte mechanism is annotated to efficient lithium ion battery vacuum, includes the support, the drive actuating cylinder of fixed mounting on the support curb plate, the support open and to have the recess, the push rod that drives actuating cylinder pass in the lateral wall of support stretches into the recess of support the push rod top that drives actuating cylinder install the back clamp plate the recess in install the preceding clamp plate relative with the back clamp plate.

Preferably, the support contain base and contact cavity the four corners department of base each fixed mounting pin contact cavity's downside be provided with the cotter hole for the position of pin, contact cavity install on the base through the cooperation of pin with the cotter hole, preceding clamp plate fixed mounting on the base, drive actuating cylinder and install on contact cavity's lateral wall.

Preferably, a cylinder connecting plate is further connected between the driving cylinder and the rear pressure plate.

Preferably, a height adjusting mechanism is mounted on the front pressing plate, and the height adjusting mechanism has a structure that: the vertical edge of one L-shaped connecting plate is provided with a bolt hole, the front pressing plate is provided with a corresponding connecting hole, and the connecting hole is connected with the bolt hole through a bolt assembly.

Preferably, the connecting holes on the front pressing plate can be a group of round holes arranged in the vertical direction, and can also be waist-shaped holes arranged in the vertical direction.

Preferably, the connecting hole on the front pressing plate is a waist-shaped hole arranged in the vertical direction, and the front pressing plate is provided with a magnet.

Preferably, the magnet is selected from electromagnets.

Due to the adoption of the technical scheme, the invention has the following beneficial effects:

1. the efficient lithium ion battery vacuum electrolyte injection mechanism is simple in structure, convenient to operate and applicable to the electrolyte injection of lithium ion batteries with different specifications and sizes;

2. the efficient lithium ion battery vacuum electrolyte injection mechanism is convenient to disassemble, maintain, clean and efficient;

3. the efficient lithium ion battery vacuum electrolyte injection mechanism disclosed by the invention has the advantages that the electrolyte is quickly discharged, the waiting time for discharging the electrolyte is shortened, the pollution and corrosion are poor due to slow electrolyte discharge, and the vacuum electrolyte injection and the efficient electrolyte injection are realized.

Drawings

Fig. 1 is an isometric view of a vacuum electrolyte injection mechanism for a high efficiency lithium ion battery of the present invention;

FIG. 2 is a schematic diagram of a high-efficiency vacuum electrolyte injection mechanism for a lithium ion battery of the present invention with the contact cavity removed;

fig. 3 is a cross-sectional view of a high-efficiency vacuum electrolyte injection mechanism of a lithium ion battery according to the present invention.

In the figure: 1-a scaffold; 11-a base; 12-a contact cavity; 13-a pin; 2-driving the cylinder; 3-back pressing plate; 4-front pressing plate; 41-connecting hole; 5-cylinder connecting plate; 6-a height adjustment mechanism; 61-a connecting plate; 62-bolt hole; 7-magnet.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-3, the efficient lithium ion battery vacuum electrolyte injection mechanism of the present invention includes a bracket 1, a driving cylinder 2 fixedly mounted on a side plate of the bracket 1, a groove formed on the bracket 1, a push rod of the driving cylinder 2 penetrating through a side wall of the bracket 1 and extending into the groove of the bracket 1, a rear press plate 3 mounted on a top of the push rod of the driving cylinder 2, and a front press plate 4 mounted in the groove and opposite to the rear press plate 3.

As is well known, after the support 1 is provided with the groove, electrolyte is easy to drip into the groove, the support is difficult to clean during cleaning, in order to facilitate cleaning, the support 1 is divided into the base 11 and the contact cavity 12, the four corners of the base 11 are respectively and fixedly provided with the pins 13, the lower side surface of the contact cavity 12 is provided with the pin holes relative to the pins 13, the contact cavity 12 is arranged on the base 11 through the matching of the pins 13 and the pin holes 14, the front pressing plate 4 is fixedly arranged on the base 11, and the driving cylinder 2 is arranged on the outer side wall of the contact cavity 12.

If the push rod of the driving cylinder 2 directly pushes the rear pressing plate 3 to move forwards, the force applied by the driving cylinder 2 to the rear pressing plate 3 acts on one point on the rear pressing plate 3, if the two driving cylinders 2 are used for pushing the rear pressing plate 3, the rear pressing plate 3 is stressed less at the middle position, and the battery roll core is probably not pressed to the minimum state, so that the battery at the middle position cannot absorb enough electrolyte; if only one driving cylinder 2 is used for pushing the rear pressing plate 3, the result is that two driving cylinders 2 are used for pushing, therefore, a cylinder connecting plate 5 is connected between the driving cylinder 2 and the rear pressing plate 3, the force of the driving cylinder 2 is firstly applied to the cylinder connecting plate 5, and the cylinder connecting plate 5 uniformly applies the force to the rear pressing plate 3, so that the force applied to battery cells in the same batch is uniform, and the filling quality of the battery cells is high.

Because the equipment can not be used for filling electrolyte in the battery core with one specification, in order to meet the requirements of batteries with different specifications, a height adjusting mechanism 6 is arranged on the front pressing plate 4, and the structure of the height adjusting mechanism 6 is as follows: bolt holes 62 are formed in the vertical edge of an L-shaped connecting plate 61.

Corresponding connecting holes 41 are formed in the front pressing plate 4 and connected with the bolt holes 62 through bolt assemblies, and the connecting holes 41 in the front pressing plate 4 can be a group of round holes arranged in the vertical direction and can also be waist-shaped holes arranged in the vertical direction. The height adjusting function can be realized by selectively connecting different round holes or adjusting the connecting height of the waist-shaped hole.

Considering the practical use situation, the height adjustment achievable by using the waist-shaped holes is far better than that achieved by using the fixedly arranged round holes, and for this reason, the connecting holes 41 in this embodiment are waist-shaped holes arranged in the vertical direction. However, after the waist-shaped hole is used for the connecting hole 41, when the height of the connecting plate 61 is adjusted, the connecting hole is not well adjusted, bolts at two sides are required to be simultaneously screwed for positioning, and in order to adjust the height of the connecting plate 61, a magnet 7 is installed on the front pressing plate 4.

The working principle is as follows: adjust connecting plate 61 to the height of setting for, and place electric core in straight flange department, to ventilating in driving actuating cylinder 2, make the push rod that drives actuating cylinder 2 stretch out, go forward through 5 drive back clamp plates of cylinder connecting plate 3, the inside book core position of extrusion electric core forms the vacuum, add electrolyte in the battery gas bag of electric core, drive actuating cylinder 2 and exhaust, pulling back clamp plate 3 returns, the inside book core of electric core is strutted under self elastic action, form a negative pressure chamber, inhale electrolyte.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an electrolyte mechanism is annotated to efficient lithium ion battery vacuum which characterized in that: the device comprises a support (1) and a driving cylinder (2) fixedly arranged on a side plate of the support (1), wherein a groove is formed in the support (1), a push rod of the driving cylinder (2) penetrates through the side wall of the support (1) and extends into the groove of the support (1), a rear pressing plate (3) is arranged at the top of the push rod of the driving cylinder (2), and a front pressing plate (4) opposite to the rear pressing plate (3) is arranged in the groove; the front pressure plate (4) is provided with a height adjusting mechanism (6), and the height adjusting mechanism (6) has the structure that: a bolt hole (62) is formed in the vertical edge of an L-shaped connecting plate (61), a corresponding connecting hole (41) is formed in the front pressing plate (4), and the connecting hole (41) is connected with the bolt hole (62) through a bolt assembly; the connecting hole (41) on the front pressing plate (4) is a waist-shaped hole arranged in the vertical direction, and the front pressing plate (4) is provided with a magnet (7).

2. The efficient vacuum electrolyte injection mechanism for the lithium ion battery according to claim 1, wherein: support (1) contain base (11) and contact chamber body (12) the four corners department of base (11) each fixed mounting pin (13) the downside of contact chamber body (12) be provided with the cotter hole for the position of pin (13), contact chamber body (12) install on base (11) through the cooperation in pin (13) and cotter hole, preceding clamp plate (4) fixed mounting on base (11), drive actuating cylinder (2) install on the lateral wall of contact chamber body (12).

3. The efficient vacuum electrolyte injection mechanism for the lithium ion battery according to claim 1, wherein: and a cylinder connecting plate (5) is connected between the driving cylinder (2) and the rear pressing plate (3).

4. The efficient vacuum electrolyte injection mechanism for the lithium ion battery according to claim 2, wherein: the upper wall of the contact cavity (12) is provided with a long opening.

5. The efficient vacuum electrolyte injection mechanism for the lithium ion battery according to claim 1, wherein: the magnet (7) is an electromagnet.