CN117673674A - Battery liquid injection device and battery liquid injection method - Google Patents
Battery liquid injection device and battery liquid injection method Download PDFInfo
- Publication number
- CN117673674A CN117673674A CN202211060746.2A CN202211060746A CN117673674A CN 117673674 A CN117673674 A CN 117673674A CN 202211060746 A CN202211060746 A CN 202211060746A CN 117673674 A CN117673674 A CN 117673674A
- Authority
- CN
- China
- Prior art keywords
- pressure
- resistant sealing
- resistant
- cavity
- sealing cavity
- 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.)
- Pending
Links
- 238000002347 injection Methods 0.000 title claims abstract description 67
- 239000007924 injection Substances 0.000 title claims abstract description 67
- 239000007788 liquid Substances 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000007789 sealing Methods 0.000 claims abstract description 287
- 239000003792 electrolyte Substances 0.000 claims abstract description 51
- 239000011261 inert gas Substances 0.000 claims abstract description 24
- 238000004891 communication Methods 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 25
- 230000037452 priming Effects 0.000 claims description 14
- 238000005192 partition Methods 0.000 claims description 10
- 230000008595 infiltration Effects 0.000 abstract description 18
- 238000001764 infiltration Methods 0.000 abstract description 18
- 238000010521 absorption reaction Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 5
- 238000011282 treatment Methods 0.000 abstract description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000002791 soaking Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000243 solution 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 invention relates to the technical field of battery liquid injection devices, and particularly provides a battery liquid injection device and a battery liquid injection method. In order to solve the problems of long infiltration time, poor infiltration effect and high battery cost of the conventional battery electrolyte injection device in the infiltration process, the battery electrolyte injection device comprises a pressure-resistant sealing device, wherein a first pressure-resistant sealing cavity and a second pressure-resistant sealing cavity are arranged on the pressure-resistant sealing device, a first air pipe communicated with the first pressure-resistant sealing cavity, a second air pipe communicated with the second pressure-resistant sealing cavity are also arranged on the pressure-resistant sealing device, a third air pipe is communicated between the first pressure-resistant sealing cavity and the second pressure-resistant sealing cavity, and a third opening and closing valve is arranged on the pressure-resistant sealing device. According to the invention, through alternately carrying out positive pressure and negative pressure treatment on the battery after liquid injection, the electrolyte absorption is promoted, the infiltration time is shortened, and through arranging the controllable communication of the two cavities, inert gas in the positive pressure cavity can break the vacuum of the negative pressure cavity, so that the inert gas can be recycled, and the liquid injection cost is reduced.
Description
Technical Field
The invention relates to the technical field of battery liquid injection devices, and particularly provides a battery liquid injection device and a battery liquid injection method.
Background
With the development of electric automobiles, the pursuit of power battery technology and the like on battery capacity is higher and higher, and the thickness and density of a pole piece in a corresponding battery are higher and higher, so that electrolyte permeation in pole piece active substances is more difficult, and how to ensure sufficient and even infiltration of the electrolyte in the battery is particularly important. At present, a general liquid injection process can be divided into two steps of liquid injection and infiltration, wherein the liquid injection process usually only needs a few seconds to inject electrolyte into the battery, and the infiltration process is to absorb the injected electrolyte into the battery cell, which is a very time-consuming process usually needs a few hours. In order to achieve good infiltration effect, the process is required to be carried out in a high-temperature drying room environment, so that the manufacturing period of the battery is prolonged, and the production cost of the lithium ion battery is greatly increased. Although the prior art also uses vacuum filling and vacuum multiple filling techniques, the problem of electrolyte filling has been present because of the difficulty in penetration of electrolyte between the battery pole pieces due to the high density of the battery pole pieces.
Accordingly, a new battery priming device is needed in the art to solve the problems of long soaking time, poor soaking effect and high battery cost of the existing battery priming device in the soaking process.
Disclosure of Invention
The invention aims to solve the technical problems that the existing battery electrolyte injection device has long infiltration time, poor infiltration effect and high battery cost in the infiltration process.
In a first aspect, the present invention provides a battery electrolyte injection device, which includes a pressure-resistant sealing device, a first pressure-resistant sealing cavity and a second pressure-resistant sealing cavity are provided on the pressure-resistant sealing device, a first air pipe communicated with the first pressure-resistant sealing cavity is provided on the pressure-resistant sealing device, a second air pipe communicated with the second pressure-resistant sealing cavity is also provided on the pressure-resistant sealing device, a third air pipe is communicated between the first pressure-resistant sealing cavity and the second pressure-resistant sealing cavity, and a third opening and closing valve is provided on the third air pipe.
In the preferred technical scheme of the battery priming device, the pressure-resistant device comprises a first pressure-resistant sealing device and a second pressure-resistant sealing device, wherein a first pressure-resistant sealing cavity is arranged on the first pressure-resistant sealing device, and a second pressure-resistant sealing cavity is arranged on the second pressure-resistant sealing device; the first pressure-resistant sealing device comprises a first sealing cover and a first bottom plate, the first sealing cover is arranged on the first bottom plate, and the first sealing cover and the first bottom plate are enclosed to form a first pressure-resistant sealing cavity; the second pressure-resistant sealing device comprises a second sealing cover and a second bottom plate, and the second bottom plate and the second sealing cover are enclosed to form a second pressure-resistant sealing cavity.
In the preferred technical scheme of the battery priming device, the first pressure-resistant sealing device is provided with an acoustic transmitter; and/or the second pressure-resistant sealing device is provided with an acoustic transmitter.
In a preferred embodiment of the above battery priming device, the first bottom plate is configured to be capable of opening and closing the first pressure-resistant seal cavity; the second bottom plate is provided so as to be capable of opening and closing the second pressure-tight seal chamber.
In the preferred technical scheme of the battery priming device, a first spring is connected between the first bottom plate and the first sealing cover, a first slideway is arranged on the first sealing cover, and the first bottom plate is slidably arranged on the first slideway; and/or a second spring is connected between the second bottom plate and the second sealing cover, a second slideway is arranged on the second sealing cover, and the second bottom plate is slidably arranged on the second slideway.
In the preferred technical scheme of the battery priming device, the first pressure-resistant sealing device comprises a first electric push rod, a base of the first electric push rod is fixed on the first sealing cover, and the push rod of the first electric push rod is connected with the first bottom plate; and/or the second pressure-resistant sealing device comprises a second electric push rod, wherein the base of the second electric push rod is fixed on the second sealing cover, and the push rod of the second electric push rod is connected with the second bottom plate.
In the preferred technical scheme of the battery priming device, the first gas pipe comprises a first positive pressure gas pipe and a first negative pressure gas pipe, and the first positive pressure gas pipe and the first negative pressure gas pipe are respectively communicated with the first pressure-resistant sealing cavity; and/or the second air pipe comprises a second positive pressure air pipe and a second negative pressure air pipe, and the second positive pressure air pipe and the second negative pressure air pipe are respectively communicated with the second pressure-resistant sealing cavity.
In the preferred technical scheme of the battery electrolyte injection device, the pressure-resistant sealing device comprises a sealing cover and a bottom plate, wherein the sealing cover is arranged on the bottom plate, a partition plate is arranged between the sealing cover and the bottom plate, the sealing cover, the partition plate and the bottom plate are enclosed to form a first pressure-resistant sealing cavity and a second pressure-resistant sealing cavity, and the third air pipe penetrates through the partition plate and is respectively communicated with the first pressure-resistant sealing cavity and the second pressure-resistant sealing cavity; and/or the first air pipe and the second air pipe are respectively communicated with the pipe wall of the third air pipe, a first opening and closing valve is arranged on the first air pipe, and a second opening and closing valve is arranged on the second air pipe.
The invention also provides a battery liquid injection method, the battery liquid injection device comprises a pressure-resistant sealing device, a first pressure-resistant sealing cavity and a second pressure-resistant sealing cavity are arranged on the pressure-resistant sealing device, a first air pipe communicated with the first pressure-resistant sealing cavity is arranged on the pressure-resistant sealing device, a second air pipe communicated with the second pressure-resistant sealing cavity is also arranged on the pressure-resistant sealing device, a third air pipe is communicated between the first pressure-resistant sealing cavity and the second pressure-resistant sealing cavity, and a third opening and closing valve is arranged on the third air pipe; the battery liquid injection method comprises the following steps:
respectively placing the two batteries after liquid injection into the first pressure-resistant sealing cavity and the second pressure-resistant sealing cavity;
vacuumizing the first pressure-resistant sealing cavity to enable the first pressure-resistant sealing cavity to be in a negative pressure state;
injecting inert gas into the second pressure-resistant sealing cavity to enable the second pressure-resistant sealing cavity to be in a positive pressure state;
after a first preset time, opening the third opening and closing valve to enable the first pressure-resistant sealing cavity and the second pressure-resistant sealing cavity to be conducted;
closing the third opening/closing valve to make the first pressure-tight seal chamber and the second pressure-tight seal chamber non-conductive;
injecting inert gas into the first pressure-resistant sealing cavity to enable the first pressure-resistant sealing cavity to be in a positive pressure state;
vacuumizing the second pressure-resistant sealing cavity to enable the second pressure-resistant sealing cavity to be in a negative pressure state;
after a second preset time, the third opening and closing valve is opened, so that the first pressure-resistant sealing cavity and the second pressure-resistant sealing cavity are conducted again.
In the preferred technical scheme of the battery liquid injection method, the pressure-resistant device comprises a first pressure-resistant sealing device and a second pressure-resistant sealing device, wherein the first pressure-resistant sealing cavity is arranged on the first pressure-resistant sealing device, and the second pressure-resistant sealing cavity is arranged on the second pressure-resistant sealing device; the first pressure-resistant sealing device is provided with an acoustic wave generator; the second pressure-resistant sealing device is provided with an acoustic wave generator; the battery liquid injection method comprises the following steps:
the sonic generator on the first pressure-resistant sealing means or the second pressure-resistant sealing means when the positive pressure state is opened.
It can be understood by those skilled in the art that the battery electrolyte injection device comprises a pressure-resistant sealing device, wherein a first pressure-resistant sealing cavity and a second pressure-resistant sealing cavity are arranged on the pressure-resistant sealing device, a first air pipe communicated with the first pressure-resistant sealing cavity is arranged on the pressure-resistant sealing device, a second air pipe communicated with the second pressure-resistant sealing cavity is also arranged on the pressure-resistant sealing device, a third air pipe is communicated between the first pressure-resistant sealing cavity and the second pressure-resistant sealing cavity, and a third opening and closing valve is arranged on the third air pipe.
Under the condition of adopting the technical scheme, when the battery liquid injection device is used, a battery after liquid injection is filled into a battery tray, wherein a battery liquid injection port is in an unsealed state, then the first pressure-resistant sealed cavity is vacuumized to form negative pressure, meanwhile, dry nitrogen is synchronously injected into the second pressure-resistant sealed cavity to form positive pressure, the two cavities are respectively kept for a certain time in the positive pressure state and the negative pressure state, so that the battery absorbs electrolyte to promote the absorption of the electrolyte, then a third opening and closing valve on a third air pipe is opened to conduct the two pressure-resistant sealed cavities, inert gas in the positive pressure cavity enters the negative pressure cavity, the pressure of the first pressure-resistant sealed cavity and the pressure of the second pressure-resistant sealed cavity are balanced, after the circulation is carried out twice, the pressure of the cavities is in normal pressure, the battery is taken out from the pressure-resistant sealed cavity, and the liquid injection is completed. According to the invention, the positive pressure and the negative pressure are alternately carried out on the battery after liquid injection, so that the absorption of electrolyte is promoted, the infiltration time of the electrolyte is shortened, and the inert gas in the positive pressure cavity can be used for breaking vacuum on the negative pressure cavity by arranging the two cavities in controllable communication, so that the inert gas can be repeatedly utilized, and the liquid injection cost is greatly reduced.
Drawings
Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:
fig. 1 is a structural view of a battery electrolyte injection device of the present invention.
List of reference numerals:
1. a first pressure-resistant sealing means; 11. a first seal cap; 12. a first base plate; 13. a first air tube; 131. a first positive pressure gas tube; 132. a first negative pressure gas pipe; 14. a first pressure-tight seal cavity; 2. a second pressure-resistant sealing means; 21. a second seal cap; 22. a second base plate; 23. a second air pipe; 231. a second positive pressure gas tube; 232. a second negative pressure gas pipe; 24. a second pressure-tight seal cavity; 3. a third air pipe; 31. a third opening/closing valve; 4. an acoustic wave emitter; 5. and a battery.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention. Those skilled in the art can adapt it as desired to suit a particular application. For example, the battery electrolyte injection device can be used for cylindrical batteries, square batteries or soft package batteries, and can also be used for other batteries needing electrolyte injection.
It should be noted that, in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the term "connected" should be interpreted broadly, and for example, may be a fixed connection, a removable connection, or a unitary connection; may be a mechanical connection. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
Referring to fig. 1, in order to solve the problems of long infiltration time, poor infiltration effect and high battery cost in the infiltration process of the conventional battery electrolyte injection device, the battery electrolyte injection device of the present invention includes a pressure-resistant sealing device, a first pressure-resistant sealing cavity 14 and a second pressure-resistant sealing cavity 24 are disposed on the pressure-resistant sealing device, a first gas pipe 13 communicated with the first pressure-resistant sealing cavity 14 is disposed on the pressure-resistant sealing device, a second gas pipe 23 communicated with the second pressure-resistant sealing cavity 24 is also disposed on the pressure-resistant sealing device, a third gas pipe 3 is communicated between the first pressure-resistant sealing cavity 14 and the second pressure-resistant sealing cavity 24, and a third opening and closing valve 31 is disposed on the third gas pipe 3.
The above arrangement has the advantages that: when the battery electrolyte injection device is used, a battery after electrolyte injection is put into a battery tray, wherein a battery electrolyte injection port is in an unsealed state, then the first pressure-resistant sealing cavity 14 is vacuumized to form negative pressure, dry nitrogen is synchronously injected into the second pressure-resistant sealing cavity 24 to form positive pressure, the two cavities are respectively kept in the positive pressure state and the negative pressure state for a certain time, the battery absorbs electrolyte to promote electrolyte absorption, then a third opening and closing valve 31 on the third air pipe 3 is opened to conduct the two pressure-resistant sealing cavities, inert gas in the positive pressure cavity enters the negative pressure cavity, the pressure of the first pressure-resistant sealing cavity 14 and the pressure of the second pressure-resistant sealing cavity 24 reach balance, after the two times of circulation, the cavity pressures are all in normal pressure, the battery is taken out from the pressure-resistant sealing cavity, and the electrolyte injection is completed. According to the invention, the positive pressure and the negative pressure are alternately carried out on the battery after liquid injection, so that the absorption of electrolyte is promoted, the infiltration time of the electrolyte is shortened, and the inert gas in the positive pressure cavity can be used for breaking the vacuum of the negative pressure cavity by arranging the two cavities in controllable communication, so that the inert gas can be repeatedly utilized, and the liquid injection cost is greatly reduced.
Referring to fig. 1, in one possible embodiment, the battery priming device includes a pressure-resistant sealing device, the pressure-resistant sealing device includes a first pressure-resistant sealing device 1 and a second pressure-resistant sealing device 2, wherein the first pressure-resistant sealing device 1 includes a first sealing cover 11 and a first bottom plate 12, the first sealing cover 11 is semicircular, the first sealing cover 11 is covered on the first bottom plate 12 and encloses a first pressure-resistant sealing cavity 14 together, and the first bottom plate 12 is configured to open and close the first pressure-resistant sealing cavity 14; the second pressure-proof sealing device 2 comprises a second sealing cover 21 and a second bottom plate 22, the second sealing cover 21 is semicircular, the second sealing cover 21 is covered on the second bottom plate 22 and jointly encloses a second pressure-proof sealing cavity 24, and the second bottom plate 22 is arranged to open and close the second pressure-proof sealing cavity 24.
Specifically, a first spring is connected between the first bottom plate 12 and the first sealing cover 11, a first slideway in the vertical direction is arranged on the first sealing cover 11, the first bottom plate 12 is slidably arranged on the first slideway, when a technician pulls down the first bottom plate 12, the first spring stretches to put a battery on the first bottom plate 12, after the hands are loosened, the first spring retracts to drive the first bottom plate 12 to be tightly abutted on the first sealing cover 11, and then the first pressure-resistant sealing cavity 14 can be opened and closed when the first bottom plate 12 moves up and down, so that the charging and discharging of the battery are realized. In addition, the first bottom plate 12 may also open and close the first pressure-tight seal cavity 14 by other means, for example, the first pressure-tight seal device 1 includes a first electric push rod, a base of which is fixed on the first seal cover 11, a push rod end of which is connected to the first bottom plate 12, and the first bottom plate 12 moves up and down relative to an opening of the first seal cover 11 when the push rod stretches up and down to open and close the first pressure-tight seal cavity 14.
Further, a first positive pressure air pipe 131 and a first negative pressure air pipe 132 which are communicated with the first pressure-resistant sealing cavity 14 are arranged on the first sealing cover 11, the first positive pressure air pipe 131 is communicated with a positive pressure system, the first negative pressure air pipe 132 is communicated with the negative pressure system, and inert gas is injected into the first pressure-resistant sealing cavity 14 through the first positive pressure air pipe 131 so that the first pressure-resistant sealing cavity 14 is in a positive pressure state; the first pressure-tight sealed cavity 14 is evacuated through the first negative pressure gas pipe 132 to place the first pressure-tight sealed cavity 14 in a negative pressure state. Wherein, a first opening and closing valve is respectively arranged on the first negative pressure air pipe 132 and the first positive pressure air pipe 131 to respectively control the conduction of the first negative pressure air pipe 132 and the conduction of the first positive pressure air pipe 131. Alternatively, the pressure state in the chamber may be controlled by directly controlling the opening and closing of the positive pressure system and the negative pressure system without providing the opening and closing valves in the first positive pressure gas pipe 131 and the first positive pressure gas pipe 132.
Specifically, a second spring is connected between the second sealing cover 21 and the second bottom plate 22, a second slideway in the vertical direction is arranged on the second sealing cover 21, the second bottom plate 22 is slidably arranged on the second slideway, when a technician pulls down the second bottom plate 22, the second spring stretches to put a battery on the second bottom plate 22, after the technician releases hands, the second spring retracts to drive the second bottom plate 22 to tightly abut against the second sealing cover 21, and then the second pressure-resistant sealing cavity 24 can be opened and closed when the second bottom plate 22 moves up and down, so that the charging and discharging of the battery are realized. In addition, the second bottom plate 22 may also open and close the second pressure-tight sealing cavity 24 by other means, for example, the second pressure-tight sealing device 2 includes a second electric push rod, a base of which is fixed on the second sealing cover 21, a push rod end of which is connected to the second bottom plate 22, and the second bottom plate 22 moves up and down relative to an opening of the second sealing cover 21 when the push rod stretches up and down to open and close the second pressure-tight sealing cavity 24.
Further, a second positive pressure air pipe 231 and a second negative pressure air pipe 232 which are communicated with the second pressure-resistant sealing cavity 24 are arranged on the second sealing cover 21, the second positive pressure air pipe 231 is communicated with a positive pressure system, the second negative pressure air pipe 232 is communicated with the negative pressure system, and inert gas is injected into the second pressure-resistant sealing cavity 24 through the second positive pressure air pipe 231 so that the second pressure-resistant sealing cavity 24 is in a positive pressure state; the first pressure-tight seal chamber 14 is evacuated through the second negative pressure gas pipe 232 while the second pressure-tight seal chamber 24 is in a negative pressure state. Wherein, a second opening and closing valve is respectively arranged on the second positive pressure air pipe 231 and the second negative pressure air pipe 232 to respectively control the conduction of the second negative pressure air pipe 232 and the conduction of the second positive pressure air pipe 231. Alternatively, the pressure state in the chamber may be controlled by directly controlling the opening and closing of the positive pressure system and the negative pressure system without providing the opening and closing valves in the second positive pressure gas pipe 231 and the second positive pressure gas pipe 232.
Further, a third air pipe 3 is communicated between the first pressure-resistant seal chamber 14 and the second pressure-resistant seal chamber 24, the third air pipe 3 passes through the first seal cover 11 and the second seal cover 21, and a third opening and closing valve 31 is provided on the third air pipe 3 so as to communicate or not communicate between the first pressure-resistant seal chamber 14 and the second pressure-resistant seal chamber 24. Further, the acoustic wave emitter 4 is provided on each of the first seal cover 11 and the second seal cover 21, and the acoustic wave emitter 4 is connected to the acoustic wave emitter so that the first pressure-resistant seal chamber 14 or the second pressure-resistant seal chamber 24 in a positive pressure state resonates, and accordingly, the electrolyte in the battery therein resonates.
The inert gas is a gas that does not chemically react with various materials in the battery, such as dry air, argon, nitrogen, and the like.
The above arrangement has the advantages that: when the battery electrolyte injection device is used, a battery after electrolyte injection is put into a battery tray, wherein a battery electrolyte injection port is in an unsealed state, then the left first pressure-resistant sealing cavity 14 is vacuumized to form negative pressure, meanwhile, dry nitrogen is synchronously injected into the right second pressure-resistant sealing cavity 24 to form positive pressure, the two cavities are respectively kept in the positive pressure state and the negative pressure state for a certain time, so that the battery absorbs electrolyte, meanwhile, an acoustic wave emitter 4 on the pressure-resistant sealing device in the positive pressure state emits acoustic waves to enable the electrolyte to resonate, electrolyte absorption is promoted, then a third opening and closing valve 31 on a third air pipe 3 is opened to conduct the two pressure-resistant sealing cavities, inert gas in the positive pressure cavity enters the negative pressure cavity to balance the pressure of the first pressure-resistant sealing cavity 14 and the second pressure-resistant sealing cavity 24, after the circulation is carried out twice, the cavity pressure is kept at normal pressure, the battery is taken out from the pressure-resistant sealing cavity, and electrolyte injection is completed. According to the invention, positive pressure and negative pressure are alternately carried out on the battery after liquid injection, and meanwhile, the electrolyte is resonated through sound waves, so that the absorption of the electrolyte is promoted, the electrolyte infiltration time is shortened, and through the controllable communication of the two cavities, inert gas in the positive pressure cavity can be used for breaking vacuum on the negative pressure cavity, so that the inert gas can be repeatedly utilized, and the liquid injection cost is greatly reduced.
Referring to fig. 1, in another embodiment, the pressure-resistant sealing device includes a sealing cover and a base plate, the sealing cover is provided on the base plate, a partition plate is provided between the sealing cover and the base plate, the sealing cover, the partition plate and the base plate are enclosed into a first pressure-resistant sealing cavity 14 and a second pressure-resistant sealing cavity 24, and the third air pipe 3 is communicated with the first pressure-resistant sealing cavity 14 and the second pressure-resistant sealing cavity 24 through the partition plate. Further, the bottom plate is arranged at the bottom of the sealing cover in an openable and closable manner and is used for placing the battery. The pressure-resistant sealing device is divided into the first pressure-resistant sealing cavity 14 and the second pressure-resistant sealing cavity 24 by the partition plate, so that the structure is simpler and more compact, and the processing cost is lower. Further, the base plates may be configured to be capable of opening and closing the first pressure-tight sealed cavity 14 and the second pressure-tight sealed cavity 24, and the specific structure thereof is the same as that of the first base plate 12 and the second base plate 22 in the above embodiment, and will not be described here again, and when the base plates are opened, two batteries can be simultaneously put into or taken out of the pressure-tight sealed cavities respectively.
Referring to fig. 1, in another embodiment, the first air pipe 13 and the second air pipe 23 are communicated with the pipe wall of the third air pipe 3, further, the first air pipe 13 is located between one end of the third air pipe 3 close to the first pressure-resistant sealing cavity 14 and the third opening and closing valve 31, the second air pipe 23 is located between one end of the third air pipe 3 close to the second pressure-resistant sealing cavity 24 and the third opening and closing valve 31, so that the first air pipe 13 can enter and exit the first pressure-resistant sealing cavity 14 through the third air pipe 3, the second air pipe 14 can enter and exit the second pressure-resistant sealing cavity 24 through the third air pipe 3, and accordingly, the first opening and closing valve and the second opening and closing valve are arranged on the first air pipe 13 and the second air pipe 14, and the third opening and closing valve 31 are arranged on the third air pipe 3, so that conduction of the air pipe is selectively controlled.
It should be noted that the number of the pressure-resistant sealing devices can be one, two or three, five, etc., and the present invention does not limit the number of the pressure-resistant sealing devices at all, and those skilled in the art can set the pressure-resistant sealing devices according to the needs.
In summary, the battery electrolyte injection device of the invention applies pressure to the electrolyte injection battery in positive and negative pressure circulation and cooperates with resonance generated by sound waves to the electrolyte, thereby greatly improving the absorption of the electrolyte, shortening the electrolyte infiltration time, and using inert gas in the positive pressure cavity to break vacuum on the negative pressure cavity, so that the inert gas can be reused, and greatly reducing the electrolyte injection cost.
The foregoing embodiments are merely illustrative of the principles of the present invention, and are not intended to limit the scope of the invention, as those skilled in the art can modify the above structure without departing from the principles of the present invention, so that the present invention can be applied to more specific application scenarios.
In addition, the invention also provides a battery liquid injection method, which applies the battery liquid injection device in the embodiment, and comprises the following steps:
respectively placing the two batteries after liquid injection into a first pressure-resistant sealing cavity and a second pressure-resistant sealing cavity;
vacuumizing the first pressure-resistant sealing cavity to enable the first pressure-resistant sealing cavity to be in a negative pressure state;
injecting inert gas into the second pressure-resistant sealing cavity to enable the second pressure-resistant sealing cavity to be in a positive pressure state;
after a first preset time, opening a third opening and closing valve to enable the first pressure-resistant sealing cavity and the second pressure-resistant sealing cavity to be conducted;
closing the third opening/closing valve to make the first pressure-resistant sealing cavity and the second pressure-resistant sealing cavity non-conductive;
injecting inert gas into the first pressure-resistant sealing cavity to enable the first pressure-resistant sealing cavity to be in a positive pressure state;
vacuumizing the second pressure-resistant sealing cavity to enable the second pressure-resistant sealing cavity to be in a negative pressure state;
after a second preset time, opening a third opening and closing valve to conduct the first pressure-resistant sealing cavity and the second pressure-resistant sealing cavity again;
the third opening/closing valve is closed.
Specifically, the battery liquid injection method specifically comprises the following steps:
respectively placing the two batteries after liquid injection into a first pressure-resistant sealing cavity and a second pressure-resistant sealing cavity;
vacuumizing the first pressure-resistant sealing cavity to enable the first pressure-resistant sealing cavity to be in a negative pressure state;
injecting inert gas into the second pressure-resistant sealing cavity to enable the second pressure-resistant sealing cavity to be in a positive pressure state;
after a first preset time, opening a third opening and closing valve to enable the first pressure-resistant sealing cavity and the second pressure-resistant sealing cavity to be conducted;
closing the third opening/closing valve to make the first pressure-resistant sealing cavity and the second pressure-resistant sealing cavity non-conductive;
injecting inert gas into the first pressure-resistant sealing cavity to enable the first pressure-resistant sealing cavity to be in a positive pressure state;
vacuumizing the second pressure-resistant sealing cavity to enable the second pressure-resistant sealing cavity to be in a negative pressure state;
after a second preset time, opening a third opening and closing valve to conduct the first pressure-resistant sealing cavity and the second pressure-resistant sealing cavity again;
the battery is taken out.
Wherein, the negative pressure range is 0 to minus 98KPa, the positive pressure range is 1 to 20KPa, and the pressure holding time is 2 to 5min each time.
It is known to those skilled in the art that the positive pressure and negative pressure treatments may be alternately performed on the electrolyte injection cell a plurality of times, and the specific times may be set as needed.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will fall within the scope of the present invention.
Claims (10)
1. The battery priming device is characterized by comprising a pressure-resistant sealing device, wherein a first pressure-resistant sealing cavity and a second pressure-resistant sealing cavity are arranged on the pressure-resistant sealing device, a first air pipe communicated with the first pressure-resistant sealing cavity is arranged on the pressure-resistant sealing device, a second air pipe communicated with the second pressure-resistant sealing cavity is also arranged on the pressure-resistant sealing device, a third air pipe is communicated between the first pressure-resistant sealing cavity and the second pressure-resistant sealing cavity, and a third opening and closing valve is arranged on the third air pipe.
2. The battery electrolyte injection device of claim 1 wherein the pressure resistant device comprises a first pressure resistant seal and a second pressure resistant seal, the first pressure resistant seal cavity being disposed on the first pressure resistant seal and the second pressure resistant seal cavity being disposed on the second pressure resistant seal; the first pressure-resistant sealing device comprises a first sealing cover and a first bottom plate, the first sealing cover is arranged on the first bottom plate, and the first sealing cover and the first bottom plate are enclosed to form a first pressure-resistant sealing cavity; the second pressure-resistant sealing device comprises a second sealing cover and a second bottom plate, and the second bottom plate and the second sealing cover are enclosed to form a second pressure-resistant sealing cavity.
3. The battery priming device of claim 2, wherein said first pressure resistant sealing device is provided with an acoustic emitter thereon; and/or the second pressure-resistant sealing device is provided with an acoustic transmitter.
4. The battery electrolyte injection apparatus according to claim 2, wherein the first bottom plate is provided so as to be able to open and close the first pressure-resistant seal chamber; the second bottom plate is provided so as to be capable of opening and closing the second pressure-tight seal chamber.
5. The battery priming device of claim 4, wherein a first spring is connected between the first base plate and the first sealing cap, a first slideway is provided on the first sealing cap, and the first base plate is slidably provided on the first slideway; and/or the number of the groups of groups,
and a second spring is connected between the second bottom plate and the second sealing cover, a second slideway is arranged on the second sealing cover, and the second bottom plate is slidably arranged on the second slideway.
6. The battery priming device of claim 4, wherein the first pressure resistant sealing device comprises a first electric pushrod, a base of the first electric pushrod is fixed to the first sealing cover, and a pushrod of the first electric pushrod is connected to the first base plate; and/or the number of the groups of groups,
the second pressure-resistant sealing device comprises a second electric push rod, a base of the second electric push rod is fixed on the second sealing cover, and the push rod of the second electric push rod is connected with the second bottom plate.
7. The battery priming device of claim 1, wherein the first gas tube comprises a first positive pressure gas tube and a first negative pressure gas tube, the first positive pressure gas tube and the first negative pressure gas tube in communication with the first pressure resistant sealed cavity, respectively; and/or the second air pipe comprises a second positive pressure air pipe and a second negative pressure air pipe, and the second positive pressure air pipe and the second negative pressure air pipe are respectively communicated with the second pressure-resistant sealing cavity.
8. The battery electrolyte injection device according to claim 1, wherein the pressure-resistant sealing device comprises a sealing cover and a bottom plate, the sealing cover is covered on the bottom plate, a partition plate is arranged between the sealing cover and the bottom plate, the sealing cover, the partition plate and the bottom plate are enclosed into the first pressure-resistant sealing cavity and the second pressure-resistant sealing cavity, and the third air pipe passes through the partition plate to be communicated with the first pressure-resistant sealing cavity and the second pressure-resistant sealing cavity respectively; and/or the first air pipe and the second air pipe are respectively communicated with the pipe wall of the third air pipe, a first opening and closing valve is arranged on the first air pipe, and a second opening and closing valve is arranged on the second air pipe.
9. The battery liquid injection method is characterized in that the battery liquid injection device comprises a pressure-resistant sealing device, a first pressure-resistant sealing cavity and a second pressure-resistant sealing cavity are arranged on the pressure-resistant sealing device, a first air pipe communicated with the first pressure-resistant sealing cavity is arranged on the pressure-resistant sealing device, a second air pipe communicated with the second pressure-resistant sealing cavity is also arranged on the pressure-resistant sealing device, a third air pipe is communicated between the first pressure-resistant sealing cavity and the second pressure-resistant sealing cavity, and a third opening and closing valve is arranged on the third air pipe; the battery liquid injection method comprises the following steps:
respectively placing the two batteries after liquid injection into the first pressure-resistant sealing cavity and the second pressure-resistant sealing cavity;
vacuumizing the first pressure-resistant sealing cavity to enable the first pressure-resistant sealing cavity to be in a negative pressure state;
injecting inert gas into the second pressure-resistant sealing cavity to enable the second pressure-resistant sealing cavity to be in a positive pressure state;
after a first preset time, opening the third opening and closing valve to enable the first pressure-resistant sealing cavity and the second pressure-resistant sealing cavity to be conducted;
closing the third opening/closing valve to make the first pressure-tight seal chamber and the second pressure-tight seal chamber non-conductive;
injecting inert gas into the first pressure-resistant sealing cavity to enable the first pressure-resistant sealing cavity to be in a positive pressure state;
vacuumizing the second pressure-resistant sealing cavity to enable the second pressure-resistant sealing cavity to be in a negative pressure state;
after a second preset time, the third opening and closing valve is opened, so that the first pressure-resistant sealing cavity and the second pressure-resistant sealing cavity are conducted again.
10. The battery filling method according to claim 9, wherein the pressure-resistant device includes a first pressure-resistant sealing device and a second pressure-resistant sealing device, the first pressure-resistant sealing cavity being provided on the first pressure-resistant sealing device, the second pressure-resistant sealing cavity being provided on the second pressure-resistant sealing device; the first pressure-resistant sealing device is provided with an acoustic wave generator; the second pressure-resistant sealing device is provided with an acoustic wave generator; the battery liquid injection method comprises the following steps:
the sonic generator on the first pressure-resistant sealing means or the second pressure-resistant sealing means when the positive pressure state is opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211060746.2A CN117673674A (en) | 2022-08-31 | 2022-08-31 | Battery liquid injection device and battery liquid injection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211060746.2A CN117673674A (en) | 2022-08-31 | 2022-08-31 | Battery liquid injection device and battery liquid injection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117673674A true CN117673674A (en) | 2024-03-08 |
Family
ID=90064970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211060746.2A Pending CN117673674A (en) | 2022-08-31 | 2022-08-31 | Battery liquid injection device and battery liquid injection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117673674A (en) |
-
2022
- 2022-08-31 CN CN202211060746.2A patent/CN117673674A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201112497Y (en) | Vacuum box used for battery chemical synthesis and battery vacuum chemical synthesis device | |
| KR101082496B1 (en) | Method of preparation of lithium ion polymer battery, dry cell and lithium ion polymer battery the same | |
| CN100395904C (en) | Process and device for cell pole piece pressurization and injection | |
| KR101748362B1 (en) | Method for manufacturing pouch secondary battery | |
| CN104428924A (en) | Battery manufacturing method | |
| JP5371826B2 (en) | Electrolyte injection device | |
| WO2014006660A1 (en) | Method for electrolyte injection and injection device for same | |
| KR20010050835A (en) | Apparatus and Method for pouring electrolyte | |
| CN1322603C (en) | Method for manufacturing soft-packing lithium ion battery in natural environment | |
| CN106531956A (en) | Lithium ion power battery vacuum sealing device and sealing process thereof | |
| KR100634151B1 (en) | Apparatus for injecting liquid into container and method therefor | |
| KR101848105B1 (en) | Pressuring apparatus able to detecting leakage of pressuring chamber | |
| CN117673674A (en) | Battery liquid injection device and battery liquid injection method | |
| KR20190007710A (en) | The Secondary Battery And The Method For Manufacturing Therefore | |
| CN112670680B (en) | Electrolyte infiltration method of soft-package battery, soft-package battery and preparation method of soft-package battery | |
| JP2004152570A (en) | Electrolyte injection method and device for the same | |
| KR102197731B1 (en) | Degassing apparatus for manufacturing secondary cell | |
| JP7004203B2 (en) | Electrolyte injection device for storage batteries | |
| JP2002100329A (en) | Sealed type battery and its manufacturing method | |
| JP2020123434A (en) | Manufacturing method of non-aqueous electrolyte secondary battery | |
| WO2012140716A1 (en) | Electrolyte introduction device | |
| KR100822192B1 (en) | Injecting method of electrolyte | |
| JP2003059485A (en) | Electrolyte filling method and device | |
| KR101441732B1 (en) | Electrolyte injection apparatus and method of secondarybattery | |
| KR102264683B1 (en) | Electrolyte Injection Method Using Vacuum |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |