Lithium battery high-temperature liquid injection structure
By designing an automatic sealing component for the high-temperature liquid injection structure of lithium batteries, the problems of low liquid injection accuracy and low production efficiency were solved, achieving automatic sealing, improving production efficiency and saving manpower.
Patent Information
- Application Number
- CN202422350728.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2034-09-26
AI Technical Summary
Current lithium battery electrolyte filling production suffers from problems such as low filling accuracy, low production efficiency, and poor safety. In particular, the forward filling method lacks a sealing function, while the vacuum back suction method has high requirements for equipment sealing.
A high-temperature liquid injection structure for lithium batteries was designed, which adopts an automatic sealing component, including a fixed block, a movable rod, a conical block and a sealing disc. The conical block forms a flow channel by moving and automatically seals after liquid injection, thereby achieving automatic sealing of the battery.
It improves injection accuracy and production efficiency, reduces subsequent processes, saves manpower, and achieves time and labor savings.
Smart Images
Figure CN223956792U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to lithium battery liquid injection technical field, specifically relates to a lithium battery high temperature liquid injection structure. BACKGROUND
[0002] In today's era of growing energy demand and rapid technological development, lithium batteries, as a high-performance energy storage device, have been widely used in many fields, such as electric vehicles, portable electronic devices, and energy storage power stations. However, the production process and quality control of lithium batteries are crucial, and the liquid injection link directly affects the performance, life and safety of the battery.
[0003] During lithium battery liquid injection production, manual liquid injection is generally used for one-to-one liquid injection processing. This method requires additional plug insertion process, and will waste plugs, resulting in low liquid injection precision, low production efficiency and poor safety.
[0004] Although the existing technology also has forward liquid injection and vacuum backflow type automatic electrolyte injection machines, but the vacuum backflow type liquid injection method has high sealing requirements for the equipment pipeline, and the sealing conditions are harsh. The forward liquid injection method has the technical problem of difficult liquid injection precision control. The existing liquid injection machine does not have a sealing function, and the lithium battery after liquid injection needs a special sealing machine for sealing, which has low production efficiency.
[0005] Therefore, we propose a lithium battery high-temperature liquid injection structure. The device can automatically seal the battery after liquid injection, reduce subsequent processes, improve production efficiency, save manpower, and achieve time-saving and labor-saving effects. CONTENT OF THE UTILITY MODEL
[0006] The utility model aims to provide a lithium battery high-temperature liquid injection structure. The device can automatically seal the battery after liquid injection, reduce subsequent processes, improve production efficiency, save manpower, and achieve time-saving and labor-saving effects.
[0007] The technical scheme adopted by the utility model is as follows:
[0008] A lithium battery high-temperature liquid injection structure includes a lithium battery body, a liquid inlet is arranged on the lithium battery body, the liquid inlet is composed of a first cylindrical groove, a first conical groove and a second cylindrical groove, and an automatic sealing assembly is arranged inside the liquid inlet.
[0009] The automatic sealing assembly comprises a fixed block and a fixed disc fixedly arranged inside the second cylindrical groove, a first through hole is formed in the fixed block, a second through hole is formed in the fixed disc, a movable rod is movably arranged inside the first through hole, a conical block is arranged at the top of the movable rod and located inside the first conical groove, a connecting disc is arranged at the bottom of the movable rod, a spring is sleeved on the movable rod and located between the conical block and the fixed block, a connecting rod is arranged at the bottom of the connecting disc, the connecting rod penetrates through the second through hole and is provided with a sealing disc, and the sealing disc is tightly attached to the fixed disc.
[0010] Further, the first conical groove is wide at the bottom and narrow at the top, and the conical block is matched with the first conical groove.
[0011] Further, a sealing layer is arranged outside the conical block.
[0012] Further, the diameter of the sealing disc is greater than the diameter of the second through hole.
[0013] Further, a sealing ring is arranged on the sealing disc, and a ring groove matched with the sealing ring is formed at the bottom of the fixed disc.
[0014] Further, an injector is further arranged, the injector is provided with a sealing block and an injection head, and a liquid outlet is arranged outside the injection head.
[0015] The utility model achieves the following technical effects:
[0016] When the injection device enters the liquid inlet, the conical block is first contacted, then the conical block is pressed, the pressing force drives the conical block to move inside the first conical groove, so that a flow channel through which the electrolyte can enter is formed between the conical block and the inner wall of the first conical groove, at the same time, the conical block drives the movable rod to move inside the first through hole and press the spring, the movable rod drives the connecting disc to move, the connecting rod is driven to move, the sealing disc is driven to move, so that the second through hole is opened, the entering electrolyte flows into the lithium battery body to perform injection treatment, after the injection is completed, the injection device is withdrawn, so that the pressing force disappears, at this time, the spring force drives the conical block to restore to the original position inside the first conical groove, so that one-time sealing is performed, at the same time, the conical block drives the movable rod, the connecting disc and the connecting rod to move, the connecting rod drives the sealing disc to move and tightly attach to the fixed disc, so that two-time sealing is performed. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1It is the whole structure schematic diagram of the utility model;
[0018] Figure 2 It is the structure schematic diagram of the utility model liquid inlet;
[0019] Figure 3 It is the structure schematic diagram of the utility model liquid inlet when liquid inlet;
[0020] Figure 4 It is the structure schematic diagram of the utility model automatic sealing assembly.
[0021] In the drawing, the component list represented by each sign is as follows:
[0022] 1, lithium battery body;2, liquid inlet;3, first cylindrical groove;4, first conical groove;5, second cylindrical groove;6, fixed block;7, fixed disc;8, movable rod;9, conical block;10, connecting disc;11, spring;12, connecting rod;13, sealing disc;14, sealing ring;15, ring groove;16, syringe;17, sealing block;18, injection head;19, liquid outlet. Specific implementation
[0023] In order to make the purpose and the advantage of the utility more clearly, the utility is specifically explained below in combination with examples.It should be understood that the following text is only used to describe one or several specific implementation modes of the utility, and does not strictly limit the protection scope specifically requested by the utility.
[0024] As Figures 1-4 Indicated, the technical scheme adopted by the utility is as follows: a lithium battery high-temperature liquid injection structure, comprising a lithium battery body 1, the lithium battery body 1 is provided with a liquid inlet 2, the liquid inlet 2 is composed of a first cylindrical groove 3, a first conical groove 4 and a second cylindrical groove 5, and an automatic sealing assembly is arranged inside the liquid inlet 2.
[0025] The automatic sealing assembly comprises a fixed block 6 and a fixed disc 7 fixedly arranged inside the second cylindrical groove 5, a first through hole is formed in the fixed block 6, a second through hole is formed in the fixed disc 7, a movable rod 8 is movably arranged inside the first through hole, a conical block 9 located inside the first conical groove 4 is arranged at the top of the movable rod 8, a connecting disc 10 is arranged at the bottom of the movable rod 8, a spring 11 located between the conical block 9 and the fixed block 6 is sleeved on the movable rod 8, a connecting rod 12 is arranged at the bottom of the connecting disc 10, the connecting rod 12 penetrates through the second through hole and is provided with a sealing disc 13, and the sealing disc 13 is tightly attached to the fixed disc 7.
[0026] The working principle is that when the injection is carried out, the injection device enters the liquid inlet 2, and when entering the liquid inlet 2, the conical block 9 is first contacted, and then the conical block 9 is pressed, the pressing force drives the conical block 9 to move in the first conical groove 4, so that a flow channel for the electrolyte is formed between the conical block 9 and the inner wall of the first conical groove 4, and the conical block 9 drives the movable rod 8 to move in the first through hole and press the spring 11, and the movable rod 8 drives the connecting disc 10 to move, the connecting rod 12 moves, the sealing disc 13 moves, so that the second through hole is opened, so that the entering electrolyte flows into the lithium battery body 1 to carry out injection treatment, after the injection is completed, the injection device is withdrawn, so that the pressing force disappears, at this time, the spring 11 drives the conical block to restore to the original position in the first conical groove 4, so as to seal once, and the conical block 9 drives the movable rod 8, the connecting disc 10 and the connecting rod 12 to move, the connecting rod 12 drives the sealing disc 13 to move and tightly adhere to the fixed disc 7, so as to seal twice. The device not only can automatically seal the battery after injection, reduce the subsequent process, improve the production efficiency, at the same time, save manpower, achieve the effect of saving time and labor.
[0027] Among them, the purpose of setting the first cylindrical groove 3 is to make the conical block have a certain distance from the outside world, so as to prevent the phenomenon of accidental touch from occurring.
[0028] At the same time, the first conical groove 4 is narrow at the top and wide at the bottom, and the conical block 9 matches the first conical groove 4, which means that the conical block 9 is also narrow at the top and wide at the bottom, and the conical block 9 can seal the first conical groove 4.
[0029] Further, the outer side of the conical block 9 is provided with a sealing layer, which can improve the sealing effect.
[0030] The diameter of the sealing disc 13 is greater than the diameter of the second through hole, so that the sealing disc 13 can seal the second through hole.
[0031] Among them, the sealing ring 14 is arranged on the sealing disc 13, and the ring groove 15 matched with the sealing ring 14 is arranged at the bottom of the fixed disc 7, so that the sealing ring 14 can enter the ring groove 15 during sealing, thereby improving the sealing effect.
[0032] It also includes a syringe 16, the syringe 16 is provided with a sealing block 17 and an injection head 18, the outer side of the injection head 18 is provided with a liquid outlet 19, the syringe 16 enters the liquid inlet 2, the sealing block 17 can seal the first cylindrical groove 3 during injection, and the liquid outlet 19 arranged on the outer side of the injection head 18 can discharge the electrolyte.
[0033] The working principle of the utility model is: when injecting, the injection device enters the liquid inlet 2, first contacts the conical block 9, then presses the conical block 9, the pressing force drives the conical block 9 to move in the first conical groove 4, so that a flow channel for electrolyte is formed between the conical block 9 and the inner wall of the first conical groove 4, at the same time, the conical block 9 drives the movable rod 8 to move in the first through hole and press the spring 11, at the same time, the movable rod 8 drives the connecting disc 10 to move, the connecting rod 12 moves, the sealing disc 13 moves, so that the second through hole is opened, the entering electrolyte flows into the lithium battery body 1 to inject, after injection, the injection device exits, so that the pressing force disappears, at this time, the spring 11 drives the conical block 9 to restore to the original position in the first conical groove 4, so that the first sealing is carried out, at the same time, the conical block 9 drives the movable rod 8, the connecting disc 10 and the connecting rod 12 to move, the connecting rod 12 drives the sealing disc 13 to move and tightly adhere to the fixed disc 7, so that the second sealing is carried out. The device can automatically seal the injected battery, reduce the subsequent process, improve the production efficiency, save manpower, save time and effort.
[0034] The above is only the preferred embodiment of the utility model, it should be pointed out that, for ordinary skilled person in the art, without departing from the principle of the utility model, can make several improvements and refinements, these improvements and refinements also should be regarded as the protection scope of the utility model. The structure, device and operation method not specifically described and explained in the utility model, if no special description and limitation, are implemented according to the conventional means in the field.
Claims
1. A high-temperature liquid injection structure for a lithium battery, comprising a lithium battery body (1), characterized in that: The lithium battery body (1) is provided with a liquid inlet (2), the liquid inlet (2) is composed of a first cylindrical groove (3), a first conical groove (4) and a second cylindrical groove (5), and an automatic sealing assembly is arranged inside the liquid inlet (2); The automatic sealing assembly comprises a fixed block (6) and a fixed disc (7) fixedly arranged inside the second cylindrical groove (5), a first through hole is formed in the fixed block (6), a second through hole is formed in the fixed disc (7), a movable rod (8) is movably arranged inside the first through hole, a conical block (9) is arranged at the top of the movable rod (8) and located inside the first conical groove (4), a connecting disc (10) is arranged at the bottom of the movable rod (8), a spring (11) is sleeved on the movable rod (8) and located between the conical block (9) and the fixed block (6), a connecting rod (12) is arranged at the bottom of the connecting disc (10), the connecting rod (12) penetrates through the second through hole and is provided with a sealing disc (13), and the sealing disc (13) is tightly attached to the fixed disc (7).
2. The high-temperature liquid injection structure of the lithium battery according to claim 1, characterized in that: The first conical groove (4) is narrow at the top and wide at the bottom, and the conical block (9) is matched with the first conical groove (4).
3. The high-temperature liquid injection structure of the lithium battery according to claim 1, characterized in that: A sealing layer is arranged on the outside of the conical block (9).
4. The high-temperature liquid injection structure of the lithium battery according to claim 1, characterized in that: The diameter of the sealing disc (13) is greater than the diameter of the second through hole.
5. The high-temperature liquid injection structure of lithium battery according to claim 1, characterized in that: A sealing ring (14) is arranged on the sealing disc (13), and an annular groove (15) matched with the sealing ring (14) is formed at the bottom of the fixed disc (7).
6. The high-temperature liquid injection structure of lithium battery according to claim 1, characterized in that: An injector (16) is further provided, the injector (16) is provided with a sealing block (17) and an injection head (18), and a liquid outlet (19) is arranged on the outside of the injection head (18).