CN220628188U - Liquid injection nozzle of square aluminum shell battery liquid injection machine for energy storage - Google Patents
Liquid injection nozzle of square aluminum shell battery liquid injection machine for energy storage Download PDFInfo
- Publication number
- CN220628188U CN220628188U CN202322145144.3U CN202322145144U CN220628188U CN 220628188 U CN220628188 U CN 220628188U CN 202322145144 U CN202322145144 U CN 202322145144U CN 220628188 U CN220628188 U CN 220628188U
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- China
- Prior art keywords
- liquid injection
- injection nozzle
- liquid
- battery
- energy storage
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- 239000007788 liquid Substances 0.000 title claims abstract description 200
- 238000002347 injection Methods 0.000 title claims abstract description 147
- 239000007924 injection Substances 0.000 title claims abstract description 147
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 19
- 238000004146 energy storage Methods 0.000 title claims abstract description 18
- 239000003792 electrolyte Substances 0.000 claims abstract description 44
- 230000007704 transition Effects 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 15
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 13
- 229910052744 lithium Inorganic materials 0.000 abstract description 13
- 238000005516 engineering process Methods 0.000 abstract description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 5
- 229910001416 lithium ion Inorganic materials 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- QHGJSLXSVXVKHZ-UHFFFAOYSA-N dilithium;dioxido(dioxo)manganese Chemical compound [Li+].[Li+].[O-][Mn]([O-])(=O)=O QHGJSLXSVXVKHZ-UHFFFAOYSA-N 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 150000002642 lithium compounds Chemical class 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000003466 welding Methods 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 utility model relates to a lithium battery manufacturing technology, in particular to a liquid injection nozzle of a square aluminum shell battery liquid injection machine for energy storage, which is used for injecting electrolyte into a battery in cooperation with a battery core opening, wherein the liquid injection nozzle is provided with a liquid injection opening which is mutually communicated and is matched with the battery core opening and a liquid inlet for introducing the electrolyte, one end of the liquid injection opening which is matched with the battery core opening is provided with a circular arc-shaped opening, the diameter of the liquid injection nozzle gradually increases towards the direction of the battery core opening, and one end of the liquid injection nozzle, which is positioned at the liquid injection opening, is also provided with a circular groove which is arranged around the liquid injection opening. The liquid injection nozzle is more attached to the battery cell port, is compatible with the small deviation between the liquid injection nozzle and the battery cell port, and can be matched with the circular groove, so that liquid splashing during liquid injection can be effectively prevented.
Description
Technical Field
The utility model relates to a lithium battery manufacturing technology, in particular to a liquid injection nozzle of a square aluminum shell battery liquid injection machine for energy storage.
Background
Lithium batteries have advantages of high energy density, long charge and discharge life, low self-discharge rate, small volume and weight, and the like, and thus are widely used in electric automobiles, mobile devices, energy storage systems, and other electronic devices.
The basic principle of the lithium battery is that lithium ions are utilized to migrate back and forth between the anode and the cathode of the battery, so that the storage and the release of electric energy are realized. It consists of one or more lithium ion battery cells, each cell consisting of a positive electrode, a negative electrode, an electrolyte and a separator. In lithium batteries, the positive electrode is typically composed of a lithium compound (e.g., lithium manganate, lithium cobaltate, or lithium iron phosphate) and the negative electrode is typically composed of a carbon material (e.g., graphite). The two are separated by an electrolyte (usually an organic solution) and a diaphragm, so that the positive electrode and the negative electrode are prevented from being in direct contact. During charging, an external power supply passes current through the lithium battery, so that lithium ions in the electrolyte are dissociated from the positive electrode and move to the negative electrode, and meanwhile, electrons flow through an external circuit to complete the charging process of the battery. During discharging, lithium ions are released from the negative electrode, move to the positive electrode through the electrolyte and the diaphragm, and meanwhile electrons flow back to the negative electrode through an external circuit again, so that electric energy is released.
The lithium battery has more complex manufacturing process, and relates to more process technology and production equipment types. According to different production processes, the lithium battery production can be divided into front section cell slice making, middle section cell assembly and rear section separation links. The liquid injection is used as a key process in the lithium ion battery manufacturing process, and the quality of the liquid injection effect not only influences the battery performance, but also restricts the production efficiency. The lithium battery injection can be divided into two steps of (1) injection: injecting electrolyte into the battery; (2) infiltration: the injected electrolyte is absorbed into the cell. The lithium battery electrolyte injection machine is one of core equipment in the middle section of a lithium battery, and refers to equipment for quantitatively injecting battery electrolyte into the battery cell after the battery cell is assembled. The liquid injection process of the lithium battery liquid injection machine can be divided into two main steps, namely a step of injecting electrolyte into the battery core, and a step of fully infiltrating the electrode plates and the diaphragms in the battery core.
In the existing battery liquid injection procedure, the problems of long liquid injection time consumption, poor liquid injection mouth sealing, high vacuum low leakage rate, low liquid injection precision and the like exist, wherein in the process of injecting electrolyte into a battery liquid injection mouth by using the liquid injection mouth, the phenomenon that electrolyte is overflowed and splashed can occur due to the fact that the liquid injection mouth cannot be completely compatible with the activity of a jig, the electrolyte pollutes a battery shell around the liquid injection mouth, the welding sealing of the liquid injection mouth is directly influenced, and the small deviation exists between the liquid injection mouth and the battery liquid injection mouth, so that a differential pressure scrapped battery core is caused, and the production efficiency of a battery is seriously influenced.
Disclosure of Invention
Aiming at the defect that electrolyte is splashed when the electrolyte is injected in the prior art, the utility model provides a liquid injection nozzle of a square aluminum shell battery liquid injection machine for energy storage, which overcomes the defect, and the specific technical scheme is as follows: the utility model provides a square aluminium shell battery annotates liquid machine and annotates liquid mouth for with electric core mouth matched with pour into electrolyte into in the battery into, annotate the liquid mouth and set up mutually communicating with electric core mouth matched with annotate liquid mouth and be used for letting in electrolyte's inlet, annotate liquid mouth and electric core mouth matched with one end and be convex opening, annotate the convex opening of liquid mouth and be the direction diameter increase gradually towards electric core mouth.
In the utility model, the liquid injection port matched with the battery cell port is provided with the arc-shaped opening with the diameter gradually increasing towards the direction of the battery cell port, so that the small deviation between the liquid injection port and the battery cell port can be compatible, the matching degree with the battery cell port is better, and the electrolyte is prevented from overflowing and splashing. And the liquid injection nozzle is kept with a certain amount of clearance due to the arc-shaped design, so that the electric core is prevented from being scrapped due to the fact that the pressure difference between the inside and the outside of the electric core is caused by the small deviation between the liquid injection nozzle and the electric core opening, and the liquid injection yield of the electric core and the production safety are improved.
Further, one end of the liquid injection nozzle, which is positioned at the liquid injection port, is also provided with a circular groove which is arranged around the liquid injection port.
In the utility model, the round groove arranged around the liquid injection port can temporarily hold a small amount of the electrolyte when the electrolyte is discharged, so that the discharged electrolyte is prevented from polluting the shell of the battery.
Further, the circular groove divides the liquid injection nozzle into two layers, so that the liquid injection nozzle has a double-layer structure at one end of the liquid injection nozzle.
According to the utility model, one end of the liquid injection nozzle is provided with the circular groove to form a double-layer structure, so that the flexibility of the liquid injection nozzle is increased, the liquid injection nozzle can bear larger nitrogen pressure, the larger nitrogen pressure can enable the electrolyte amount of single liquid injection into the battery cell to be larger during liquid injection, the liquid injection circulation times can be reduced, the working time is saved, and the productivity is improved.
Further, annotate the liquid mouth including coaxial fixed connection's first cylinder, second cylinder, third cylinder, first cylinder one end is opened has annotates the liquid mouth, and third cylinder one end is opened has the inlet.
The existing liquid injection nozzle is in a conical shape, so that the vertical direction of the liquid injection nozzle and the position of the cell opening is not easy to ensure, tiny deviation occurs when the liquid injection nozzle is attached to the cell opening, electrolyte is caused to overflow and splash, and the liquid injection nozzle in the utility model is in a cylindrical shape and can be better attached to the cell opening, so that the pollution of a shell caused by overflow and splash of the electrolyte is prevented, the manual wiping cost is reduced, and the yield of the liquid injection of the cell and the safety of production are improved.
Further, the diameter of the first column body is smaller than that of the second column body, and the first column body is connected with the second column body in a smooth transition mode.
Further, the third cylinder diameter is greater than the second cylinder.
The third column is used for installing the liquid injection nozzle on the electrolyte feeding machine, so that the production can be smoothly carried out.
Further, the liquid injection port penetrates through the first cylinder and the second cylinder, and the liquid inlet penetrates through the second cylinder and the third cylinder.
Further, the diameter of the liquid inlet is larger than that of the liquid injection port.
In the utility model, the diameter of the liquid inlet is larger than that of the liquid injection port, and the flow velocity of the electrolyte in the liquid injection port is larger than that of the liquid inlet during liquid injection, so that the sufficient pressure inside and outside the battery cell is ensured during liquid injection, and the battery cell is prevented from being scrapped due to pressure difference generated inside and outside the battery cell. And, liquid inlet pressure is less than annotate liquid mouth pressure when annotating the liquid, and annotate liquid mouth and be bilayer structure at annotating liquid mouth one end, can bear bigger pressure for the setting that liquid inlet diameter is greater than annotating the liquid mouth can not exert an influence to annotating liquid mouth's safety in utilization and life-span.
Further, the liquid injection port and the liquid inlet are arranged in a cylindrical stepped mode at the communication position.
Further, the joint between the liquid injection port and the liquid inlet is in smooth transition.
The utility model has the following beneficial effects:
(1) The liquid injection nozzle is more attached to the battery cell port, is compatible with the tiny deviation between the liquid injection nozzle and the battery cell port, and can be matched with the circular groove, so that liquid splashing during liquid injection can be effectively prevented;
(2) The double-layer structure can bear larger nitrogen pressure, reduce the cycle times of liquid injection, save time and improve productivity;
(3) The liquid inlet is arranged in the utility model, the diameter of which is larger than that of the liquid injection port, so that the battery cell can be prevented from being scrapped due to pressure difference during liquid injection.
Drawings
Fig. 1: the utility model discloses a schematic diagram of a liquid injection nozzle device of a square aluminum shell battery liquid injection machine for energy storage.
Fig. 2: a sectional view of an embodiment 1 of a liquid injection nozzle of a square aluminum shell battery liquid injection machine for energy storage.
Wherein: the liquid injection nozzle 01, the liquid injection port 1, the liquid inlet 2, the circular groove 3, the double-layer structure 4, the first cylinder 5, the second cylinder 6 and the third cylinder 7.
Detailed Description
The utility model is further described below with reference to the drawings and specific examples. Those of ordinary skill in the art will be able to implement the utility model based on these descriptions. In addition, the embodiments of the present utility model referred to in the following description are typically only some, but not all, embodiments of the present utility model. Therefore, all other embodiments, which can be made by one of ordinary skill in the art without undue burden, are intended to be within the scope of the present utility model, based on the embodiments of the present utility model.
As shown in fig. 1 and 2, a liquid injection nozzle 01 of a square aluminum shell battery liquid injection machine for energy storage is used for injecting electrolyte into a battery in cooperation with a battery core opening, the liquid injection nozzle 01 is provided with a liquid injection opening 1 which is mutually communicated and is matched with the battery core opening and a liquid inlet 2 for introducing the electrolyte, one end of the liquid injection opening 1, which is matched with the battery core opening, is provided with a circular arc-shaped opening, and the diameter of the liquid injection nozzle gradually increases towards the direction of the battery core opening. In this embodiment, the liquid injection port 1 matched with the electric core port is an arc-shaped opening with gradually increased diameter towards the electric core port, so that the small deviation between the liquid injection port 01 and the electric core port can be compatible, the matching degree with the electric core port is better, and the electrolyte is prevented from overflowing and splashing. And the arc-shaped design ensures that the liquid injection nozzle 01 has a certain amount of clearance, so that the electric core is prevented from being scrapped due to the pressure difference between the inside and the outside of the electric core caused by the tiny deviation between the liquid injection nozzle 01 and the electric core opening, and the liquid injection yield of the electric core and the production safety are improved.
The end of the liquid injection nozzle 01, which is positioned at the liquid injection port 1, is also provided with a circular groove 3 which is arranged around the liquid injection port 1. In this embodiment, the circular groove 3 provided around the liquid inlet 1 can serve to temporarily hold a small amount of the discharged electrolyte when the electrolyte is discharged, preventing the discharged electrolyte from contaminating the battery case. In this embodiment, one end of the liquid injection nozzle 01 forms a double-layer structure 4 through the circular groove 3, so that flexibility of the liquid injection nozzle 01 is increased, the liquid injection nozzle 01 can bear larger nitrogen pressure, the electrolyte amount of single liquid injection into the battery cell during liquid injection can be larger due to the larger nitrogen pressure, the liquid injection circulation times can be reduced, working time is saved, and productivity is improved.
The liquid injection nozzle 01 comprises a first column 5, a second column 6 and a third column 7 which are coaxially and fixedly connected, wherein one end of the first column 5 is provided with a liquid injection port 1, and one end of the third column 7 is provided with a liquid inlet 2. The diameter of the first cylinder 5 is smaller than that of the second cylinder 6, the first cylinder 5 and the second cylinder 6 are connected in a smooth transition mode, the diameter of the third cylinder 7 is larger than that of the second cylinder 6, the liquid injection port 1 penetrates through the first cylinder 5 and the second cylinder 6, and the liquid inlet 2 penetrates through the second cylinder 6 and the third cylinder 7. The current notes liquid mouth 01 its shape adopts the toper more, is difficult for guaranteeing the perpendicular with electric core mouth position, can make notes liquid mouth 01 appear tiny deviation when laminating with electric core mouth, causes electrolyte to emit liquid and splash, and notes liquid mouth 01 in this embodiment be cylindrical, can be better laminate with electric core mouth, prevent that electrolyte from emitting liquid and splashing and polluting the casing, reduced the manual work and cleaned the cost, promoted electric core notes liquid yield and the security of production. The third column 7 in this embodiment is used to mount the pouring nozzle 01 on the electrolyte feeding machine so that the production can be smoothly performed.
The diameter of the liquid inlet 2 is larger than that of the liquid injection port 1. In this embodiment, the diameter of the liquid inlet 2 is larger than that of the liquid inlet 1, and the flow velocity of the electrolyte in the liquid inlet 1 is larger than that of the liquid inlet 2 during liquid injection, so that the pressure inside and outside the battery cell is ensured to be sufficient during liquid injection, and the battery cell is prevented from being scrapped due to pressure difference generated inside and outside the battery cell. And, liquid inlet 2 pressure is less than annotate liquid mouth 1 pressure during annotating the liquid, and annotate liquid mouth 01 and be bilayer structure 4 at annotating liquid mouth 1 one end, can bear bigger pressure for the setting that liquid inlet 2 diameter is greater than annotate liquid mouth 1 can not exert an influence to annotating liquid mouth 01's safety in utilization and life-span.
In one embodiment, the connection between the liquid injection port 1 and the liquid inlet 2 is in a cylindrical stepped arrangement.
In another embodiment, the communication part of the liquid injection port 1 and the liquid inlet 2 is in smooth transition.
Claims (10)
1. The utility model provides a square aluminum hull battery annotates liquid machine and annotates liquid mouth (01) for with electric core mouth cooperatees and pours into electrolyte into the battery, its characterized in that: the electrolyte injection nozzle (01) is provided with an electrolyte injection port (1) which is mutually communicated and matched with the battery cell port and a liquid inlet (2) for introducing electrolyte, one end of the electrolyte injection port (1) which is matched with the battery cell port is provided with a circular arc-shaped opening, and the diameter of the circular arc-shaped opening of the electrolyte injection port (1) is gradually increased towards the direction of the battery cell port.
2. The liquid injection nozzle (01) of the square aluminum shell battery liquid injection machine for energy storage according to claim 1 is characterized in that: one end of the liquid injection nozzle (01) positioned at the liquid injection port (1) is also provided with a circular groove (3) which is arranged around the liquid injection port (1).
3. The liquid injection nozzle (01) of the square aluminum shell battery liquid injection machine for energy storage according to claim 2, wherein: the circular groove (3) divides the liquid injection nozzle (01) into two layers, so that the liquid injection nozzle (01) has a double-layer structure (4) at one end of the liquid injection nozzle (1).
4. The liquid injection nozzle (01) of the square aluminum shell battery liquid injection machine for energy storage according to claim 1 is characterized in that: the liquid injection nozzle (01) comprises a first cylinder (5), a second cylinder (6) and a third cylinder (7) which are coaxially and fixedly connected, a liquid injection port (1) is formed in one end of the first cylinder (5), and a liquid inlet (2) is formed in one end of the third cylinder (7).
5. The liquid injection nozzle (01) of the square aluminum shell battery liquid injection machine for energy storage according to claim 4 is characterized in that: the diameter of the first column body (5) is smaller than that of the second column body (6), and the first column body (5) is connected with the second column body (6) in a smooth transition mode.
6. The liquid injection nozzle (01) of the square aluminum shell battery liquid injection machine for energy storage according to claim 4 is characterized in that: the diameter of the third column body (7) is larger than that of the second column body (6).
7. The liquid injection nozzle (01) of the square aluminum shell battery liquid injection machine for energy storage according to any one of claims 4-6, wherein the liquid injection nozzle is characterized in that: the liquid injection port (1) penetrates through the first cylinder (5) and the second cylinder (6), and the liquid inlet (2) penetrates through the second cylinder (6) and the third cylinder (7).
8. The liquid injection nozzle (01) of the square aluminum shell battery liquid injection machine for energy storage according to claim 1 is characterized in that: the diameter of the liquid inlet (2) is larger than that of the liquid injection port (1).
9. The liquid injection nozzle (01) of the square aluminum shell battery liquid injection machine for energy storage according to claim 8, wherein the liquid injection nozzle is characterized in that: the communicating part of the liquid injection port (1) and the liquid inlet (2) is cylindrical ladder-shaped.
10. The liquid injection nozzle (01) of the square aluminum shell battery liquid injection machine for energy storage according to claim 8, wherein the liquid injection nozzle is characterized in that: the communication part of the liquid injection port (1) and the liquid inlet (2) is in smooth transition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322145144.3U CN220628188U (en) | 2023-08-10 | 2023-08-10 | Liquid injection nozzle of square aluminum shell battery liquid injection machine for energy storage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322145144.3U CN220628188U (en) | 2023-08-10 | 2023-08-10 | Liquid injection nozzle of square aluminum shell battery liquid injection machine for energy storage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220628188U true CN220628188U (en) | 2024-03-19 |
Family
ID=90218291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322145144.3U Active CN220628188U (en) | 2023-08-10 | 2023-08-10 | Liquid injection nozzle of square aluminum shell battery liquid injection machine for energy storage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220628188U (en) |
-
2023
- 2023-08-10 CN CN202322145144.3U patent/CN220628188U/en active Active
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