Negative pressure cup assembly
By using a split design and threaded connection for the negative pressure cup assembly, combined with plastic composite materials and special material treatment, the problems of high cost and inconvenient replacement of existing negative pressure cup assemblies are solved, achieving low cost, high efficiency assembly and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2026-03-20
AI Technical Summary
Existing negative pressure cup components are expensive to manufacture and inconvenient to replace parts. Traditional connection methods require remanufacturing when the entire component is damaged, increasing the cost of use.
The negative pressure cup body and negative pressure suction rod adopt a separate design and are assembled by threaded connection. The combination of plastic composite materials and special materials treatment increases the sealing and stability, and the use of E-type snap rings and springs improves convenience and reusability.
This reduces the manufacturing cost of the negative pressure cup assembly, improves the ease of assembly and disassembly, reduces replacement time and cost when parts are damaged, and ensures airtightness and stability.
Smart Images
Figure CN224021032U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to battery formation technical field, especially a kind of negative pressure cup subassembly. BACKGROUND
[0002] In the manufacturing process of lithium battery, it needs to be charged and formed, but the heat generated in the charging process will make the electrolyte temperature rise, and the expanded electrolyte will come out from the liquid injection port, to avoid these spilled electrolyte spreading to the surface of battery shell, negative pressure cup is usually used to collect the spilled electrolyte, so that the manufacturing cost of negative pressure cup is directly related to the manufacturing cost of the whole lithium battery.
[0003] The existing negative pressure cup subassembly is generally divided into two kinds, one is that negative pressure cup and metal negative pressure suction nozzle rod are connected by heat melting, the forming time is too long, the metal negative pressure suction nozzle rod is processed for a long time, the price is expensive, and when one of negative pressure cup body or metal negative pressure suction nozzle rod is damaged, the whole assembly cannot be used, and the whole assembly must be replaced; the other is that metal negative pressure suction nozzle rod and negative pressure cup body are separated, which needs large space in battery formation equipment, and because of the connection of hose in the middle, additional parts are needed for assembly, and the cost is increased. UTILITY MODEL CONTENTS
[0004] The main purpose of the utility model is to provide a kind of negative pressure cup subassembly, to reduce the cost of negative pressure cup subassembly, and facilitate the replacement of parts.
[0005] To achieve the above purpose, the negative pressure cup subassembly provided by the utility model comprises:
[0006] Negative pressure cup body, the negative pressure cup body has accommodating cavity;
[0007] Negative pressure suction nozzle rod, the inside of the negative pressure suction nozzle rod is provided with first channel, the top of the negative pressure suction nozzle rod is connected with the bottom of the negative pressure cup body, and the first channel is communicated with the accommodating cavity;
[0008] Mounting seat, the mounting seat is sleeved on the negative pressure suction nozzle rod, and the mounting seat is used to install the negative pressure cup subassembly on battery formation equipment;
[0009] Negative pressure suction nozzle, the inside of the negative pressure suction nozzle is provided with second channel, and the negative pressure suction nozzle is sleeved on the negative pressure suction nozzle rod, and the first channel is communicated with the second channel;
[0010] Among them, the negative pressure cup body is provided with internal thread, the outer periphery of the negative pressure suction nozzle rod is provided with external thread, and the negative pressure cup body and the negative pressure suction nozzle rod are connected by the internal thread and the external thread.
[0011] Further, an end of the negative pressure suction nozzle rod is provided with a connecting head, an outer periphery of the connecting head is provided with the external thread, a bottom of the negative pressure cup body is provided with a connecting groove, the connecting groove is communicated with the accommodating cavity, and the negative pressure cup body is provided with the internal thread in the connecting groove.
[0012] Further, the connecting head comprises a first connecting head and a second connecting head connected with each other, a diameter of the first connecting head is smaller than that of the second connecting head, the first connecting head is used for clamping into the bottom of the accommodating cavity, an outer periphery of the second connecting head is provided with the external thread, and the second connecting head is screwed into the connecting groove through the internal thread and the external thread.
[0013] Further, an outer periphery of the first connecting head is provided with a sealing ring, and the sealing ring is arranged between a bottom groove of the connecting groove and a top surface of the second connecting head.
[0014] Further, an outer peripheral wall of the negative pressure suction nozzle rod is provided with a clamping ring, the negative pressure suction nozzle is provided with a clamping groove in the second channel, and the clamping ring can be clamped into the clamping groove.
[0015] Further, a material of the negative pressure suction nozzle rod adopts a plastic composite material.
[0016] Further, the mounting seat has a through hole for the negative pressure suction nozzle rod to penetrate, the negative pressure suction nozzle rod is movably arranged in the through hole, a mounting gap is formed between the mounting seat and the negative pressure suction nozzle rod at the through hole, an outer periphery of the negative pressure suction nozzle rod is provided with a spring, and the spring penetrates into the mounting gap.
[0017] Further, a bottom of the negative pressure suction nozzle rod is provided with an annular groove, the annular groove is provided with an E-shaped clamping spring, and the spring is clamped between the mounting seat and the E-shaped clamping spring.
[0018] Further, a positioning strip is protruded on an inner wall surface of the through hole of the mounting seat, an outer peripheral wall of the negative pressure suction nozzle rod is provided with a recess capable of cooperating with the positioning strip, the recess extends along a length direction of the negative pressure suction nozzle rod, and the positioning strip can slide along the recess.
[0019] Further, an inner wall surface of the first channel is sprayed with a Teflon material.
[0020] Compared with the prior art, the negative pressure cup body and the negative pressure nozzle rod in the negative pressure cup assembly of the utility model are separately arranged, and the negative pressure cup body and the negative pressure nozzle rod are connected by screwing when assembling, so that the screwing greatly improves the convenience of assembling and disassembling the negative pressure cup assembly. In this way, the negative pressure cup assembly is low in cost and simple to install, one part can be repeatedly used when the negative pressure rod and the negative pressure cup are damaged, the time for re-manufacturing is short, and the use cost of the whole negative pressure cup assembly is greatly reduced. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 It is a structure diagram of the negative pressure cup assembly of the utility model;
[0022] Figure 2 It is a sectional view of the negative pressure cup assembly of the utility model;
[0023] Figure 3 It is a sectional view of the negative pressure cup assembly of the utility model; Figure 2
[0024] Figure 4 It is an exploded view of the negative pressure cup assembly of the utility model;
[0025] Figure 5 It is an exploded sectional view of the negative pressure cup assembly of the utility model;
[0026] Figure 6 It is a structure diagram of the mounting seat in the negative pressure cup assembly of the utility model.
[0027] BRIEF DESCRIPTION OF DRAWINGS: 100, negative pressure cup body; 110, containing cavity; 200, negative pressure nozzle rod; 210, first channel; 300, mounting seat; 400, negative pressure nozzle; 410, second channel; 120, internal thread; 220, external thread; 230, connecting head; 130, connecting groove; 231, first connecting head; 232, second connecting head; 233, sealing ring; 420, snap ring; 240, clamping groove; 310, through hole; 320, mounting gap; 330, spring; 340, annular groove; 341, E-shaped clamping spring; 350, mounting hole; 360, positioning strip; 250, recess. DETAILED DESCRIPTION
[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0029] Please refer to Figures 1 to 6 The utility model provides a negative pressure cup assembly.
[0030] The negative pressure cup assembly comprises a negative pressure cup body 100, a mounting seat 300 and a negative pressure suction nozzle 400, the negative pressure cup body 100 has a containing cavity 110; the inside of the negative pressure suction nozzle rod 200 is provided with a first channel 210, the top of the negative pressure suction nozzle rod 200 is connected with the bottom of the negative pressure cup body 100, and the first channel 210 is communicated with the containing cavity 110; the mounting seat 300 is sleeved on the negative pressure suction nozzle rod 200, and the mounting seat 300 is used for mounting the negative pressure cup assembly on a battery formation equipment; the inside of the negative pressure suction nozzle 400 is provided with a second channel 410, the negative pressure suction nozzle 400 is sleeved on the negative pressure suction nozzle rod 200, and the first channel 210 is communicated with the second channel 410; wherein the negative pressure cup body 100 is provided with an internal thread 120, the outer periphery of the negative pressure suction nozzle rod 200 is provided with an external thread 220, and the negative pressure cup body 100 and the negative pressure suction nozzle rod 200 are screw-connected through the internal thread 120 and the external thread 220.
[0031] Specifically, after entering the negative pressure formation process, the internal electrolyte of the battery cell is drawn into the negative pressure cup body 100 through the negative pressure suction nozzle rod 200 and the negative pressure suction nozzle 400 by opening the negative pressure source, the electrolyte is retained in the negative pressure cup body 100, the negative pressure source is closed after the negative pressure formation process is finished, the positive pressure source blows the electrolyte retained in the negative pressure cup body 100 into the internal battery cell, so that the electrolyte is backflowed. When the negative pressure cup body 100 and the negative pressure suction nozzle rod 200 are assembled, the containing cavity 110, the first channel 210 and the second channel 410 are communicated with each other.
[0032] The negative pressure cup body 100 and the negative pressure suction nozzle rod 200 in the negative pressure cup assembly are separately arranged, are screw-connected when being assembled, and greatly improve the convenience of assembling and disassembling the negative pressure cup assembly whether during disassembling or assembling. In this way, the negative pressure cup assembly is low in cost and simple to install, one part can be repeatedly used when the negative pressure rod and the negative pressure cup are damaged, the re-production time is short, and the use cost of the whole negative pressure cup assembly is greatly reduced.
[0033] Please refer to Figures 2 to 5Further, the end of the negative pressure suction nozzle rod 200 is provided with a connecting head 230, the outer periphery of the connecting head 230 is provided with an external thread 220, the bottom of the negative pressure cup body 100 is provided with a connecting groove 130, the connecting groove 130 is communicated with the accommodating cavity 110, and the negative pressure cup body 100 is provided with an internal thread 120 in the connecting groove 130. Specifically, the negative pressure suction nozzle rod 200 is screwed through the external thread 220 of the connecting head 230 and the internal thread 120 of the connecting groove 130 of the negative pressure cup body 100, and when the negative pressure suction nozzle rod 200 and the negative pressure cup body 100 are assembled into one body, the connecting head 230 is located inside the connecting groove 130.
[0034] Please refer to Figures 2 to 5 Further, the connecting head 230 comprises a first connecting head 231 and a second connecting head 232 connected with each other, the diameter of the first connecting head 231 is smaller than that of the second connecting head 232, the first connecting head 231 is used for clamping into the bottom of the accommodating cavity 110, and the outer periphery of the second connecting head 232 is provided with the external thread 220, and the second connecting head 232 is screwed into the connecting groove 130 through the internal thread 120 and the external thread 220. Specifically, during assembly, the connecting head 230 gradually enters the connecting groove 130 as the negative pressure suction nozzle rod 200 is rotated and clamped, and when the assembly is in place, the first connecting head 231 of the connecting head 230 of the negative pressure suction nozzle rod 200 extends into the accommodating cavity 110, and the second connecting head 232 is located in the connecting groove 130.
[0035] Since the negative pressure cup body 100 and the negative pressure suction nozzle rod 200 in the negative pressure cup assembly of the utility model are screwed, the sealing problem needs to be considered. Please refer to Figures 2 to 5 Further, the outer periphery of the first connecting head 231 is provided with a sealing ring 233, and the sealing ring 233 is arranged between the bottom groove of the connecting groove 130 and the top surface of the second connecting head 232. In this way, the sealing ring 233 seals the connection between the negative pressure cup body 100 and the negative pressure suction nozzle rod 200, guarantees the air tightness between the two, prevents the air pressure from being insufficient when the electrolyte is sucked by negative pressure, or the electrolyte from leaking.
[0036] Please refer to Figures 2 to 5Further, the outer peripheral wall of the negative pressure nozzle rod 200 is provided with a clamping ring 420, the negative pressure nozzle 400 is provided with a clamping groove 240 in the second channel 410, and the clamping ring 420 can be clamped in the clamping groove 240. It should be noted that the connection mode of the traditional metal negative pressure rod and the negative pressure nozzle 400 is connected together by the friction force generated by extrusion. When the negative pressure nozzle 400 is stuck to the battery cell due to electrolyte solidification or the negative pressure system is disconnected due to negative pressure, and the bearing gravity is greater than the friction force, the negative pressure nozzle 400 and the negative pressure nozzle rod 200 are easy to fall off. The clamping ring 420 on the negative pressure nozzle 400 cooperates with the clamping groove 240 in the negative pressure nozzle rod 200 to clamp and position the negative pressure nozzle 400 on the negative pressure nozzle rod 200. In this way, the negative pressure nozzle 400 can be clamped in the clamping groove 240 by the clamping ring 420 to improve the stability of the negative pressure nozzle rod 200, and prevent the negative pressure nozzle 400 from falling off the negative pressure nozzle rod 200.
[0037] Further, the material of the negative pressure nozzle rod 200 is a plastic composite material. Specifically, the traditional negative pressure nozzle rod 200 is made of metal material, and the processing cost is high. The material of the negative pressure nozzle rod 200 is a plastic composite material, which can further reduce the cost. At the same time, in order to reduce the possibility of blockage of the first channel 210 of the negative pressure nozzle rod 200, the appearance of the negative pressure nozzle rod 200 and the first channel 210 require smoothness, and the first channel 210 of the negative pressure nozzle rod 200 can be surface treated or sprayed with special materials.
[0038] Please refer to Figures 2 to 6 Further, the mounting seat 300 has a through hole 310 for the negative pressure nozzle rod 200 to penetrate, and the negative pressure nozzle rod 200 is movably arranged in the through hole 310. The mounting seat 300 and the negative pressure nozzle rod 200 form an installation gap 320 at the through hole 310, and the outer periphery of the negative pressure nozzle rod 200 is provided with a spring 330 which penetrates into the installation gap 320. In this way, when the negative pressure cup assembly is used, the negative pressure cup assembly will be driven downward by the driving device on the battery formation equipment, so that the negative pressure nozzle 400 on the negative pressure cup assembly can be pressed at the liquid injection port of the battery cell. Through the action of the spring 330, when the negative pressure nozzle 400 is pressed at the liquid injection port of the battery cell, the spring 330 can enhance the stability of the negative pressure nozzle 400 pressed at the liquid injection port of the battery.
[0039] Please refer to Figures 2 to 5Further, the bottom of the negative pressure nozzle rod 200 is provided with an annular groove 340, and an E-shaped clamp spring 341 is arranged in the annular groove 340, and the spring 330 is clamped between the mounting seat 300 and the E-shaped clamp spring 341. It should be noted that the conventional blocking spring 330 is blocked by a nut, and the nut has a high cost and complicated installation. The E-shaped clamp spring 341 is used for blocking in the present application, and the E-shaped clamp spring 341 is cheaper than the nut, so that the production cost can be reduced, and the processing and installation are easy. Please refer to Figure 6 Further, the mounting seat 300 is provided with mounting holes 350 on both sides, and the mounting holes 350 can be penetrated by bolts to be mounted on the battery formation equipment. Specifically, the mounting seat 300 is mounted on the external equipment through the mounting holes 350, so that the negative pressure cup assembly can be fixed at the corresponding position, and the stability of the flow of the electrolyte in the battery is maintained.
[0040] Please refer to Figure 4 and Figure 6 Further, the mounting seat 300 is provided with a positioning strip 360 on the inner wall surface of the penetrating hole 310, and the outer peripheral wall of the negative pressure nozzle rod 200 is provided with a recess 250 capable of cooperating with the positioning strip 360, the recess 250 extends along the length direction of the negative pressure nozzle rod 200, and the positioning strip 360 can slide along the recess 250. In this way, when the mounting seat 300 is sleeved into the negative pressure nozzle rod 200, the cooperation of the positioning strip 360 and the recess 250 is utilized, the mounting seat 300 is slid, the positioning strip 360 slides along the recess 250 of the negative pressure nozzle rod 200, the self-positioning of the assembly of the negative pressure nozzle rod 200 and the mounting seat 300 is realized, and the efficiency of the mounting seat 300 into the negative pressure nozzle rod 200 is improved.
[0041] Further, the inner wall surface of the first channel 210 is sprayed with Teflon material. The inner wall is smooth by spraying Teflon or other special materials in the negative pressure nozzle rod 200, and the possibility of blockage is reduced.
[0042] The above is only an optional embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structural transformation made by utilizing the contents of the present application specification and drawings, or directly / indirectly applied in other related technical fields is included in the patent protection range of the present application.
Claims
1. A negative pressure cup assembly, characterized in that, The negative pressure cup assembly includes: A negative pressure cup body having a receiving cavity; A negative pressure suction rod, wherein the inside of the negative pressure suction rod is provided with a first channel, the top of the negative pressure suction rod is connected to the bottom of the negative pressure cup body, and the first channel is connected to the receiving cavity; Mounting base, which is sleeved on the negative pressure suction nozzle rod, is used to mount the negative pressure cup assembly on the battery formation equipment; A negative pressure suction nozzle, wherein a second channel is provided inside the negative pressure suction nozzle, and the negative pressure suction nozzle is sleeved on the negative pressure suction nozzle rod, and the first channel is connected to the second channel; The negative pressure cup body is provided with an internal thread, and the outer circumference of the negative pressure suction nozzle rod is provided with an external thread. The negative pressure cup body and the negative pressure suction nozzle rod are connected by the internal thread and the external thread.
2. The negative pressure cup assembly as described in claim 1, characterized in that, The end of the negative pressure suction nozzle rod is provided with a connector, the outer periphery of the connector is provided with the external thread, the bottom of the negative pressure cup body is provided with a connecting groove, the connecting groove communicates with the receiving cavity, and the negative pressure cup body is provided with the internal thread in the connecting groove.
3. The negative pressure cup assembly as described in claim 2, characterized in that, The connector includes a first connector and a second connector that are connected to each other. The diameter of the first connector is smaller than that of the second connector. The first connector is used to snap into the bottom of the receiving cavity. The outer periphery of the second connector is provided with the external thread. The second connector is screwed into the connecting groove through the internal thread and the external thread.
4. The negative pressure cup assembly as described in claim 3, characterized in that, A sealing ring is fitted around the outer periphery of the first connector, and the sealing ring is located between the bottom groove of the connecting groove and the top surface of the second connector.
5. The negative pressure cup assembly as described in claim 1, characterized in that, A retaining ring is provided on the outer peripheral wall of the negative pressure suction nozzle rod, and a retaining groove is provided in the second channel of the negative pressure suction nozzle, and the retaining ring can be engaged in the retaining groove.
6. The negative pressure cup assembly as described in any one of claims 1 to 5, characterized in that, The negative pressure suction nozzle rod is made of plastic composite material.
7. The negative pressure cup assembly as described in claim 1, characterized in that, The mounting base has a through hole through which the negative pressure suction nozzle rod passes. The negative pressure suction nozzle rod is movably inserted through the through hole. An installation gap is formed between the mounting base and the negative pressure suction nozzle rod at the through hole. A spring is sleeved on the outer periphery of the negative pressure suction nozzle rod, and the spring passes through the installation gap.
8. The negative pressure cup assembly as described in claim 7, characterized in that, The bottom of the negative pressure suction nozzle rod is provided with an annular groove, and an E-type retaining spring is provided in the annular groove. The spring is clamped between the mounting base and the E-type retaining spring.
9. The negative pressure cup assembly as described in claim 8, characterized in that, The mounting base has a positioning strip protruding on the inner wall of the through hole, and the outer peripheral wall of the negative pressure suction nozzle rod has a recess that can cooperate with the positioning strip. The recess extends along the length of the negative pressure suction nozzle rod, and the positioning strip can slide along the recess.
10. The negative pressure cup assembly as described in claim 1, characterized in that, The inner wall of the first channel is coated with Teflon material.