CN217822927U

CN217822927U - Structure for reducing sodium ion battery formation electrolyte loss

Info

Publication number: CN217822927U
Application number: CN202221256442.9U
Authority: CN
Inventors: 未海峰; 孙冬; 晏子聪
Original assignee: Wuhu Etc Battery Ltd
Current assignee: Wuhu Etc Battery Ltd
Priority date: 2022-05-24
Filing date: 2022-05-24
Publication date: 2022-11-15
Anticipated expiration: 2032-05-24

Abstract

The utility model discloses a reduce structure that sodium ion battery ization becomes electrolyte loss relates to sodium ion battery ization and becomes technology technical field, including the vacuum chamber, the support frame is installed to the interior roof of vacuum chamber, installs on the support frame and becomes the cup, becomes the internally connected with spiral pipe of cup, and the both ends of spiral pipe are followed to become the cup inside and are stretched out, become the upper and lower both sides of cup and are connected with delivery port and water inlet respectively. The utility model discloses a dock the spiral pipe on the exhaust hole to helical structure through the spiral pipe reduces the velocity of flow of gas and electrolyte, sends cold water into from the water inlet through water inlet and the external water pump of delivery port simultaneously and becomes the cup and get rid of the circulation from the delivery port, thereby reduces the temperature of gas and electrolyte this moment and further reduces the velocity of flow of gas and electrolyte, avoids gaseous "promotion" electrolyte to take electrolyte out under negative pressure environment, reduces the loss of electrolyte.

Description

Structure for reducing sodium ion battery formation electrolyte loss

Technical Field

The utility model relates to a sodium ion battery ization becomes technical field, concretely relates to reduce structure that sodium ion battery ization becomes electrolyte loss.

Background

With the continuous development of new energy technologies, researchers have focused not only on lithium ion batteries, but sodium ion batteries have begun to gradually enter the field of view of people. Sodium ion batteries have many advantages over lithium ion batteries: 1) The resource of the metal sodium is more abundant, the earth crust abundance is about 423 times of that of the metal lithium, and the price is lower than that of the lithium; 2) Sodium does not react with aluminum, so that cheaper aluminum foils can be used for both the positive and negative current collectors of the sodium-ion battery, but lithium reacts with aluminum, so that only higher-price copper foils can be used for the negative current collector of the lithium-ion battery;

3) The anode of the sodium ion battery can adopt cheap transition metal, and the cost is reduced compared with the anode of the lithium ion battery. The final cost of the sodium ion battery can be 30 to 40 percent less than that of the lithium ion battery; 4) Sodium ion batteries can use electrolyte salts and solvents with lower decomposition potentials, and therefore have a wider selection range in electrolytes than lithium ion batteries; 5) The electrochemical performance of the sodium ion battery is relatively stable, and the sodium ion battery is safer than a lithium ion battery in the using process. Therefore, the subsequent development of sodium ion batteries would be highly desirable.

However, despite its many advantages, sodium ion batteries, like lithium ion batteries, undergo a first charge activation formation process. During the formation of the cell, some components of the electrolyte are decomposed to form an SEI film (solid electrolyte support film) on the surface of the anode, accompanied by the generation of a large amount of gas. Therefore, the formation of the battery core is carried out in a negative pressure environment, and the main purpose of the method is to timely extract generated gas and avoid the swelling of the battery core. However, while the gas is generated, the electrolyte is continuously pushed, and finally the electrolyte is taken out under the negative pressure environment, so that the electrolyte is lost. Therefore, a structure for reducing the loss of the formation electrolyte of the sodium ion battery is required to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a reduce sodium ion battery and become structure of electrolyte loss to solve the above-mentioned multinomial defect that leads to among the prior art.

The utility model provides a reduce structure that sodium ion battery ization becomes electrolyte loss, includes quick-witted case and latch mechanism, the top of machine case articulates there is the case lid, two-layer space about the machine incasement portion is cut apart into through the baffle, be equipped with the mounting bracket in the upper space of machine case, install the fan on the inner wall of mounting bracket, the top joint of mounting bracket has the filter screen, the both ends of filter screen are connected with a set of latch mechanism respectively, and the equal fixed connection of two sets of latch mechanisms is on the upper space inner wall of machine case.

Preferably, the clamping mechanism is including locating the recess that sets up on the mount table and the mount table of quick-witted case upper space inner wall symmetry, the both sides of filter screen are equipped with the draw-in groove of two sets of equidimensions, sliding connection has the fixture block in the recess, the one end joint of fixture block is in the draw-in groove, the other end of fixture block is connected in one side of spring, and the opposite side of spring connects on the inner wall of recess, a telescopic link has been cup jointed in the spring, just the both ends of telescopic link are connected respectively on the outer wall of fixture block and the inner wall of recess, the upper end sliding connection of mount table has the spacer pin, the upper end of fixture block is equipped with spacing hole.

Preferably, one side of the case cover is provided with a plurality of air inlets penetrating through the outer wall, and two sides of the case are provided with a plurality of air outlets penetrating through the outer wall.

The utility model has the advantages that: the utility model discloses a dock the spiral pipe on the exhaust hole to helical structure through the spiral pipe reduces the velocity of flow of gas and electrolyte, sends cold water into from the water inlet through water inlet and the external water pump of delivery port simultaneously and becomes the cup and get rid of the circulation from the delivery port, thereby reduces the temperature of gas and electrolyte this moment and further reduces the velocity of flow of gas and electrolyte, avoids gaseous "promotion" electrolyte to take electrolyte out under negative pressure environment, reduces the loss of electrolyte.

Drawings

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

Fig. 2 is a schematic structural view of the inside of the vacuum box of the present invention.

Fig. 3 is a schematic structural view of the inside of the formation cup of the present invention.

Fig. 4 is a schematic diagram of the battery core of the present invention.

Wherein: 1-a vacuum box; 2-a support frame; 3-forming a cup; 4-a spiral pipe; 5-water outlet; 6-water inlet; 7-a binding post; 8-cylinder; 9-a support bracket; 10-a support table; 11-electric core; 12-an electrode; 13-exhaust hole; 14-a box door; 15-viewing port.

Detailed Description

In order to make the utility model realize, the technical means, the creation characteristics, the achievement purpose and the efficacy are easy to understand and understand, the utility model is further explained by combining the specific implementation mode.

As shown in fig. 1 to 4, a structure for reducing sodium ion battery formation electrolyte loss comprises a vacuum box 1, a support frame 2 is installed on the inner top wall of the vacuum box 1, a formation cup 3 is installed on the support frame 2, a spiral pipe 4 is connected inside the formation cup 3, two ends of the spiral pipe 4 extend out of the formation cup 3, and a water outlet 5 and a water inlet 6 are connected to the upper side and the lower side of the formation cup 3 respectively. The upper end of the spiral pipe 4 is connected in a collection box at the outer side through a hose and used for collecting electrolyte.

In the present embodiment, a pair of terminals 7 with opposite electrical characteristics are mounted on the supporting frame 2. Terminal 7 can carry out the operation of charging for electric core 11, and the bottom side of spiral pipe 4 and terminal 7 all is equipped with the installation spring and plays the cushioning effect, avoids to hinder electric core 11.

In this embodiment, the vacuum box 1 is symmetrical about the interior roof of support frame 2 and is installed cylinder 8, the output of cylinder 8 is connected with support bracket 9, install a supporting bench 10 on the support bracket 9, install electric core 11 in the supporting bench 10.

In this embodiment, the battery cell 11 is provided with a pair of electrodes 12 and an exhaust hole 13, the terminals 7 are electrically abutted to the electrodes 12, and the bottom end of the spiral tube 4 is abutted to the exhaust hole 13.

In this embodiment, a door 14 is hinged to one side of the vacuum box 1, and a transparent viewing port 15 is disposed on the door 14.

The utility model discloses a theory of operation does: install electric core 11 on a supporting bench 10, start cylinder 8 will bear the lifting of bracket 9 afterwards, motor 12 and exhaust hole 13 of electric core 10 upper end respectively the butt in the downside of terminal 7 and spiral pipe 4 afterwards, and cushion through the spring of terminal 7 and spiral pipe 4 lower extreme, take out into the vacuum with vacuum chamber 1 afterwards, and carry out the operation of charging to electric core 11 through terminal 7, electrolyte in electric core 11 wraps up in with the gas mixture that produces and goes into spiral pipe 4 under the arms, water inlet 6 and delivery port 5 are through external water pump this moment, change into cup 3 with the cold water pump, all gas and electrolyte cooling in spiral pipe 4 through cold water, hose connection is passed through in the collecting box in the outside to the upper end of spiral pipe 4, observe the formation process through observation mouth 15, become and finish reverse operation and get rid of electric core 11, and seal the operation to electric core 11.

The utility model discloses a dock spiral pipe 4 on exhaust hole 13 to helical structure through spiral pipe 4 reduces the velocity of flow of gas and electrolyte, send cold water into from the water inlet through water inlet 6 and 5 external water pumps of delivery port simultaneously and become cup 3 and get rid of the circulation from delivery port 5, thereby reduce the temperature of gas and electrolyte and further reduce the velocity of flow of gas and electrolyte this moment, avoid gaseous "promotion" electrolyte to take electrolyte out under negative pressure environment, reduce the loss of electrolyte.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.

Claims

1. A structure for reducing the loss of formed electrolyte of a sodium ion battery is characterized in that: including vacuum box (1), support frame (2) are installed to the interior roof of vacuum box (1), install on support frame (2) and become cup (3), the internal connection that becomes cup (3) has spiral pipe (4), the both ends of spiral pipe (4) are followed and are become cup (3) inside and stretch out, the upper and lower both sides that become cup (3) are connected with delivery port (5) and water inlet (6) respectively.

2. The structure for reducing the loss of the formation electrolyte of the sodium-ion battery according to claim 1, wherein: and the support frame (2) is provided with a pair of binding posts (7) with opposite electrical properties.

3. The structure of claim 2, wherein the structure for reducing the loss of electrolyte from the sodium ion battery is characterized in that: the vacuum box (1) is symmetrical about the inner top wall of the support frame (2) and is provided with a cylinder (8), the output end of the cylinder (8) is connected with a support bracket (9), a support platform (10) is arranged on the support bracket (9), and an electric core (11) is arranged in the support platform (10).

4. The structure of claim 3, wherein the structure for reducing the loss of electrolyte from the sodium ion battery is characterized in that: the battery cell (11) is provided with a pair of electrodes (12) and exhaust holes (13) which are opposite in electrical property, the binding post (7) is abutted to the electrodes (12) in the electrical property corresponding to each other, and the bottom end of the spiral tube (4) is abutted to the exhaust holes (13).

5. The structure for reducing the loss of the formation electrolyte of the sodium-ion battery according to claim 1, wherein: one side of the vacuum box (1) is hinged with a box door (14), and a transparent observation port (15) is arranged on the box door (14).