CN218334246U - Accurate liquid injection auxiliary device of square lithium ion battery - Google Patents
Accurate liquid injection auxiliary device of square lithium ion battery Download PDFInfo
- Publication number
- CN218334246U CN218334246U CN202222411768.0U CN202222411768U CN218334246U CN 218334246 U CN218334246 U CN 218334246U CN 202222411768 U CN202222411768 U CN 202222411768U CN 218334246 U CN218334246 U CN 218334246U
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- China
- Prior art keywords
- lithium ion
- ion battery
- conductive
- square lithium
- liquid injection
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- 239000007788 liquid Substances 0.000 title claims abstract description 56
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 52
- 238000002347 injection Methods 0.000 title claims description 47
- 239000007924 injection Substances 0.000 title claims description 47
- 238000001514 detection method Methods 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000003792 electrolyte Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Images
Classifications
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- 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
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- Secondary Cells (AREA)
Abstract
The utility model discloses an accurate notes liquid auxiliary device of square lithium ion battery, including annotating the electrically conductive anchor clamps of liquid and electrically conductive signal acquisition circuit, annotate the electrically conductive anchor clamps of liquid including two electrically conductive splint, electrically conductive signal acquisition circuit is the series circuit that power and circuit break-make detecting element series connection formed, two electrically conductive splint respectively with series circuit's both ends fixed connection. The utility model discloses when guaranteeing accurate notes liquid, furthest shortens to annotate the liquid time, reduces the running cost, promotes square lithium ion battery's production efficiency.
Description
Technical Field
The utility model relates to a lithium ion battery annotates liquid technical field, specifically is an accurate notes liquid auxiliary device of square lithium ion battery.
Background
Lithium ion batteries have been widely used in various fields due to their advantages of high energy density, high voltage, wide working temperature range, long storage life, etc., and new energy vehicles are increasingly popularized.
At present, the electrolyte injection of a square lithium ion battery is divided into primary electrolyte injection and secondary electrolyte injection, wherein the primary electrolyte injection is used for meeting the electrode infiltration requirement before formation, ensuring good electrode infiltration and formation interface consistency, and being the basic guarantee of the electrical property and the safety performance of the battery. If the primary liquid injection amount is low or the electrode wetting effect is poor, the formation interface consistency is poor, and even the formation interface lithium precipitation is caused, so that the safety performance and the long-term service life of the battery are influenced. The square lithium ion battery has high space utilization rate and less internal gaps of the battery cell, so that the time consumption of the injection process of the square lithium ion Chi Yici is long, and the injection process can reach hours generally. In addition, in order to meet the liquid injection requirements of a large number of square lithium ion batteries, a large amount of equipment investment is needed, huge energy consumption cost is brought to daily operation, and finally the production cost of the square lithium ion batteries is increased. Therefore, during design, experiment and production of the square lithium ion battery, the injection liquid of the square lithium ion battery Chi Yici needs to be optimized so as to achieve the effects of improving the efficiency and reducing the production cost.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide an accurate notes liquid auxiliary device of square lithium ion battery, when guaranteeing accurate notes liquid, furthest shortens the notes liquid time, reduces the running cost, promotes square lithium ion battery's production efficiency.
The technical scheme of the utility model is that:
the utility model provides an accurate notes auxiliary device of square lithium ion battery, is including annotating the electrically conductive anchor clamps of liquid and electrically conductive signal acquisition circuit, the electrically conductive anchor clamps of notes liquid including two electrically conductive splint, electrically conductive signal acquisition circuit is the series circuit of power and circuit break-make detecting element series connection formation, two electrically conductive splint respectively with series circuit's both ends fixed connection.
The liquid injection conductive clamp further comprises an insulating base, and the bottom ends of the two conductive clamping plates are fixedly connected to the insulating base.
The upper end face of the insulating base is provided with a scale, and the two conductive clamping plates determine the positioning distance between the two conductive clamping plates according to the scale.
And the two ends of the series circuit are respectively connected with the conductive contact layers on the two conductive clamping plates.
The conductive contact layer is a conductive rubber layer or a conductive metal layer.
The circuit on-off detection unit comprises a current sensor and a controller connected with the current sensor, the current sensor is connected with a power supply in series, and the controller is connected with a liquid injection device of the square lithium ion battery.
The utility model has the advantages that:
the utility model discloses only need can accomplish square lithium ion battery's a precision and annotate liquid for the short time, shorten the notes liquid time greatly, solve square lithium ion battery and annotate the difficult problem of liquid, promote the production efficiency and the rate of equipment utilization who annotates the liquid process to reach reduction equipment and drop into, reduce lithium ion battery's manufacturing cost, reduce the carbon emission.
Drawings
Fig. 1 is a schematic diagram of a structure of a square lithium ion battery arranged in the utility model before liquid injection.
Fig. 2 is a schematic diagram of a structure after the square lithium ion battery is arranged in the liquid injection of the utility model.
Reference numerals: 1-an insulating base, 2-a conductive clamping plate, 3-a power supply, 4-a current sensor, 5-a controller and 6-a square lithium ion battery.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 and 2, an auxiliary device for precise liquid injection of a square lithium ion battery comprises a liquid injection conductive clamp and a conductive signal acquisition circuit;
the liquid injection conductive clamp comprises an insulating base 1 and two conductive clamping plates 2, wherein a scale is arranged on the upper end face of the insulating base 1, the bottom ends of the two conductive clamping plates 2 are fixedly connected to the insulating base 1, the two conductive clamping plates 2 determine the positioning distance between the two conductive clamping plates according to the adjustment of the scale according to the specification of a square lithium ion battery, and conductive rubber layers are arranged on the opposite inner side faces of the two conductive clamping plates 2;
the conductive signal acquisition circuit comprises a power supply 3, a current sensor 4 and a controller 5, wherein the power supply 3 and the current sensor 4 are connected in series to form a series circuit, the conductive rubber layers of the two conductive clamping plates 2 are respectively and fixedly connected with two ends of the series circuit, the current sensor 4 is connected with the controller 5, and the controller 5 is connected with a liquid injection device of the square lithium ion battery.
Injection example
(1) Designing a 58Ah square lithium ion battery, wherein the shell is an aluminum shell, assembling and welding a battery core into the shell and a top cover plate, baking for 12 hours in vacuum, and detecting the moisture content of 190ppm to meet the process standard requirement;
(2) Placing the baked square lithium ion battery 6 on an insulating base 1 and between two conductive clamping plates 2, then placing a liquid injection conductive clamp in a vacuum cavity, and vacuumizing the battery core of the square lithium ion battery 6 until the vacuum degree reaches-95%;
(3) The liquid injection nozzle of the liquid injection device is pressed against the liquid injection port of the square lithium ion battery 6, after 100g of electrolyte is injected at one time, the surface of the square lithium ion battery 6 is in a slightly convex state (see fig. 2), the volume in the square lithium ion battery 6 is temporarily increased, the extra volume is used for accommodating more electrolyte, at the moment, the metal layer on the surface of the square lithium ion battery 6 enables the two conductive clamping plates 2 to be conducted, the current sensor 4 collects a conducted current signal and sends the current signal to the controller 5, the controller 5 controls the liquid injection device to stop injecting the liquid, then the square lithium ion battery 6 is kept stand for five minutes, the square lithium ion battery 6 recovers part deformation, the two conductive clamping plates 2 are disconnected, and then 5g of electrolyte is continuously injected into the square lithium ion battery 6;
(4) Breaking vacuum in the vacuum cavity and recovering normal pressure, and continuously keeping the liquid injection port of the square lithium ion battery 6 closed for 35 minutes;
(5) And after the closed standing time is reached, the internal absorption of the electrolyte in the square lithium ion battery 6 is completed, the surface of the square lithium ion battery 6 is restored to a planar state, the electrolyte injection port can be loosened at the moment, and the next procedure is continuously carried out.
Comparative example of injection
(1) The square lithium ion battery with the designed capacity of 58Ah is characterized in that the shell is an aluminum shell, the assembly welding of the cell shell and the top cover plate is completed, the vacuum baking is carried out for 12h, the moisture content is detected to be 190ppm, and the process standard requirement is met;
(2) Putting the baked square lithium ion battery 6 into a vacuum cavity, and vacuumizing the electric core of the square lithium ion battery 6 until the vacuum degree reaches-95%;
(3) Pressing a liquid injection nozzle of the liquid injection device against a liquid injection port of the square lithium ion battery 6 to inject 70g of liquid for the first time;
(4) And continuously keeping the vacuum cavity to be vacuum, injecting the rest 35g of electrolyte for multiple times, and taking 2 hours in total.
(5) After the electrolyte injection is completed, the vacuum cavity is broken to recover the normal pressure, and the square lithium ion battery 6 continues to enter the next working procedure.
Compared with the liquid injection comparative example, the liquid injection embodiment completes the liquid injection of 105g of electrolyte, the liquid injection embodiment is only one third of the liquid injection comparative example, the liquid injection time is greatly saved, and the liquid injection efficiency is improved.
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 (6)
1. The utility model provides an accurate notes liquid auxiliary device of square lithium ion battery which characterized in that: the liquid injection conductive clamp comprises two conductive clamping plates, the conductive signal acquisition circuit is a series circuit formed by connecting a power supply and a circuit on-off detection unit in series, and the two conductive clamping plates are respectively fixedly connected with two ends of the series circuit.
2. The precise liquid injection auxiliary device for the square lithium ion battery according to claim 1, characterized in that: the liquid injection conductive clamp further comprises an insulating base, and the bottom ends of the two conductive clamping plates are fixedly connected to the insulating base.
3. The precise liquid injection auxiliary device for the square lithium ion battery according to claim 2, wherein: the upper end face of the insulating base is provided with a scale, and the two conductive clamping plates determine the positioning distance between the two conductive clamping plates according to the scale.
4. The precise liquid injection auxiliary device for the square lithium ion battery according to claim 1, characterized in that: and the two opposite inner side surfaces of the two conductive clamping plates are respectively provided with a conductive contact layer, and two ends of the series circuit are respectively connected with the conductive contact layers on the two conductive clamping plates.
5. The precise liquid injection auxiliary device for the square lithium ion battery according to claim 4, wherein: the conductive contact layer is a conductive rubber layer or a conductive metal layer.
6. The precise liquid injection auxiliary device for the square lithium ion battery according to claim 1, characterized in that: the circuit on-off detection unit comprises a current sensor and a controller connected with the current sensor, the current sensor is connected with a power supply in series, and the controller is connected with a liquid injection device of the square lithium ion battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222411768.0U CN218334246U (en) | 2022-09-09 | 2022-09-09 | Accurate liquid injection auxiliary device of square lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222411768.0U CN218334246U (en) | 2022-09-09 | 2022-09-09 | Accurate liquid injection auxiliary device of square lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218334246U true CN218334246U (en) | 2023-01-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222411768.0U Active CN218334246U (en) | 2022-09-09 | 2022-09-09 | Accurate liquid injection auxiliary device of square lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218334246U (en) |
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2022
- 2022-09-09 CN CN202222411768.0U patent/CN218334246U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240530 Address after: 237300 Intersection of Baimafeng Road and Jinjiazhai Road in Jinzhai Economic Development Zone (Modern Industrial Park), Lu'an City, Anhui Province Patentee after: Jinzhai Guoxuan New Energy Co.,Ltd. Country or region after: China Address before: 230011 No. 599 Daihe Road, Xinzhan District, Hefei City, Anhui Province Patentee before: Gotion High-tech Co., Ltd. Country or region before: China |
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| TR01 | Transfer of patent right |