CN218731689U - Cylindrical battery liquid injection device and equipment - Google Patents
Cylindrical battery liquid injection device and equipment Download PDFInfo
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- CN218731689U CN218731689U CN202222826027.9U CN202222826027U CN218731689U CN 218731689 U CN218731689 U CN 218731689U CN 202222826027 U CN202222826027 U CN 202222826027U CN 218731689 U CN218731689 U CN 218731689U
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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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Abstract
The application provides a cylinder battery priming device and equipment. The above-mentioned cylinder battery priming device includes: the liquid injection pipeline, the vacuum pump and the annular sealing element; the vacuum pipeline is sleeved on the periphery of the liquid injection pipeline and is provided with a vacuum cavity; the vacuumizing action end of the vacuum pump is communicated with the vacuum cavity; the bottom of vacuum pipe is located to the one end of annular sealing member, is formed with the gas passageway in the annular sealing member, crosses gas passageway and vacuum cavity intercommunication, crosses the gas passageway still be used for with annotate liquid mouth intercommunication, annotates the liquid pipeline and wears to locate the gas passageway, and annotates the liquid pipeline and be used for with annotate liquid mouth intercommunication, is formed with the vacuum mouth on the annular sealing member to make the other end of annular sealing member be used for pasting when the vacuum pump during operation and locate on annotating the outer wall of liquid mouth. The vacuum pipeline is vacuumized by using the vacuum pump, so that gas in the electric core is pumped away, and the gas is prevented from forming a solid electrolyte membrane on the surfaces of the anode material and the cathode material, so that the impedance of the battery is reduced, and the cycle performance of the battery is better.
Description
Technical Field
The utility model relates to a technical field of battery production especially relates to a cylinder battery priming device and equipment.
Background
At present, cylindrical batteries have been widely used in many mobile devices in industrial and civil fields due to their advantages of high energy density, small size, long service life, etc. In the production process of the conventional cylindrical battery, for example, a steel-shell cylindrical battery, referring to fig. 1, a liquid injection port 101a is formed in an explosion-proof sheet 100a of a cap structure 10a, then electrolyte is injected into a battery cell through the liquid injection port 101a under a sealed condition, and the liquid injection port 101a is sealed after the liquid injection is finished. And then, entering a formation stage of the battery, namely, charging the battery which is injected with liquid at a low current, and forming a solid electrolyte membrane on the surfaces of the positive and negative electrode materials at the moment, wherein a large amount of gas is generated.
However, the gas generated by the formation cannot be discharged from the battery, so that a part of the gas can continue to react and continuously form a solid electrolyte membrane on the surfaces of the anode and cathode materials, thereby increasing the impedance of the battery and influencing the cycle performance of the battery; moreover, because the filling rate of the cylindrical battery is high, the primary liquid injection amount cannot meet the technological requirements of the cylindrical battery, the secondary liquid injection is required to be performed on the battery after the battery is formed, and the liquid injection port is plugged after the liquid injection is finished, so that the secondary liquid injection cannot be completed, and the cycle performance of the battery is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the weak point among the prior art, provide one kind and can be with the gaseous discharge after the formation and accomplish twice notes liquid to improve battery cycle performance's cylinder battery priming device and equipment.
The purpose of the utility model is realized through the following technical scheme:
a cylindrical battery electrolyte injection device comprises: the liquid injection pipeline, the vacuum pump and the annular sealing element; the vacuum pipeline is sleeved on the periphery of the liquid injection pipeline and is provided with a vacuum cavity; the vacuumizing action end of the vacuum pump is communicated with the vacuum cavity; the one end of annular sealing member is located the bottom of vacuum pipe, be formed with the gas passageway in the annular sealing member, the gas passageway with the vacuum cavity intercommunication, the gas passageway still is used for and annotates liquid mouth intercommunication, annotate the liquid pipeline and wear to locate the gas passageway, just annotate the liquid pipeline be used for with annotate liquid mouth intercommunication, be formed with the vacuum mouth on the annular sealing member, so that the other end of annular sealing member is used for the vacuum pump during operation subsides and locates annotate on the outer wall of liquid mouth.
In one embodiment, the vacuum ports are provided in plurality, and the plurality of vacuum ports are uniformly distributed on the annular sealing member.
In one embodiment, the annular seal is a sealing rubber ring.
In one embodiment, a sealing flange is arranged at the top of the vacuum pipeline, and the sealing flange is sleeved on the periphery of the liquid injection pipeline.
In one embodiment, the liquid injection pipe and the vacuum pipe are integrally formed.
In one embodiment, the cylindrical battery filling device further includes two sealing plugs, a liquid inlet and a liquid outlet are respectively formed at two ends of the liquid filling pipeline, the liquid inlet is used for inputting electrolyte, the liquid outlet is communicated with the liquid filling port, and the two sealing plugs are respectively used for opening or closing the liquid inlet and the liquid outlet.
In one embodiment, the outer walls of the two sealing plugs are respectively screwed with the inner wall of the liquid inlet and the inner wall of the liquid outlet.
In one embodiment, the vacuum line is L-shaped.
A cylinder battery liquid injection device comprises an electrolyte barrel and the cylinder battery liquid injection device according to any one of the above embodiments, wherein the electrolyte barrel is communicated with a liquid injection pipeline.
In one embodiment, the cylindrical battery electrolyte injection device further comprises a flow controller, the flow controller is arranged on the electrolyte injection pipeline, and the flow controller is used for adjusting the output quantity of the electrolyte.
Compared with the prior art, the utility model discloses a but not only be limited to following advantage:
1. because the outer wall of the liquid injection port is attached with the annular sealing element, the vacuum port on the annular sealing element is vacuumized, so that the annular sealing element is tightly adsorbed on the outer wall of the liquid injection port, and the liquid injection port is sequentially communicated with the gas passing channel and the vacuum chamber of the annular sealing element, and the vacuum chamber is communicated with the vacuumizing action end of the vacuum pump, the vacuum chamber is kept in a closed environment, and the liquid injection port is also communicated with the liquid injection pipeline which is used for being communicated with the electrolyte barrel before liquid injection, so that the whole liquid injection process is ensured to be in the sealed environment;
2. the battery enters a formation stage and generates gas, at the moment, a vacuum pump is used for vacuumizing the vacuum cavity and the gas passage in sequence, namely, the battery core is vacuumized through the vacuum pipeline, so that the gas in the battery core is pumped away, and the gas is prevented from forming a solid electrolyte membrane on the surfaces of the anode material and the cathode material, so that the impedance of the battery is reduced, the cycle performance of the battery is better, and the electrolyte is prevented from being pumped away when the vacuum pipeline is used for vacuumizing as the liquid injection pipeline penetrates through the gas passage;
3. in pouring into electric core through annotating liquid pipeline with electrolyte, accomplish the first notes liquid of battery, treat that the battery formation back takes out the gas in the electric core, then carry out the second time to the battery and annotate liquid, so, through annotating liquid twice to the battery for electrolyte that has the capacity in the electric core, and then improved the cyclicity performance of battery.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural diagram of a cap structure of a cylindrical battery in the prior art;
FIG. 2 is a schematic structural diagram of a cylindrical battery electrolyte filling apparatus according to an embodiment;
FIG. 3 is a bottom view of the cylindrical battery electrolyte injection device shown in FIG. 2;
fig. 4 is a schematic structural diagram of a cylindrical battery electrolyte filling device in another embodiment.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are illustrated in the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a single embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The application provides a cylinder battery priming device includes: the liquid injection pipeline, the vacuum pump and the annular sealing element are arranged in the vacuum pipeline; the vacuum pipeline is sleeved on the periphery of the liquid injection pipeline and is provided with a vacuum cavity; the vacuumizing action end of the vacuum pump is communicated with the vacuum cavity; the one end of annular sealing member is located the bottom of vacuum pipe, be formed with the gas passageway in the annular sealing member, the gas passageway with the vacuum cavity intercommunication, the gas passageway still is used for and annotates liquid mouth intercommunication, annotate the liquid pipeline and wear to locate the gas passageway, just annotate the liquid pipeline be used for with annotate liquid mouth intercommunication, be formed with the vacuum mouth on the annular sealing member, so that the other end of annular sealing member is used for the vacuum pump during operation subsides and locates annotate on the outer wall of liquid mouth.
In order to better understand the technical scheme and the beneficial effects of the present application, the following detailed description is further provided in conjunction with specific embodiments:
please refer to fig. 2 and fig. 3, which illustrate a cylindrical battery filling apparatus 10 according to an embodiment of the present invention, including: the liquid injection pipeline 100, the vacuum pipeline 200, the vacuum pump 300 and the annular sealing element 400; the vacuum pipeline 200 is sleeved on the periphery of the liquid injection pipeline 100, and a vacuum cavity 201 is formed in the vacuum pipeline 200; the vacuumizing action end of the vacuum pump 300 is communicated with the vacuum cavity 201; (ii) a The one end of annular seal 400 is located the bottom of vacuum pipe 200, be formed with gas passageway 401 in the annular seal 400, gas passageway 401 with vacuum cavity 201 intercommunication, gas passageway 401 still is used for and annotates liquid mouth 101a intercommunication, annotate liquid pipeline 100 and wear to locate gas passageway 401, just annotate liquid pipeline 100 be used for with annotate liquid mouth 101a intercommunication, be formed with vacuum mouth 402 on the annular seal 400, so that the other end of annular seal 400 is used for vacuum pump 300 during operation pastes and locates on annotating the outer wall of liquid mouth 101a.
In this embodiment, before injecting the electrolyte into the battery, since the annular sealing member 400 is attached to the outer wall of the injection port 101a, the vacuum port 402 on the annular sealing member 400 is vacuumized, so that the annular sealing member 400 is tightly attached to the outer wall of the injection port 101a, and the injection port 101a is sequentially communicated with the air passage 401 of the annular sealing member 400 and the vacuum chamber 201, it can be understood that since the annular sealing member 400 is disposed at the bottom of the vacuum pipeline 200, and the annular sealing member 400 is attached to the outer wall of the injection port 101a by vacuuming, and the vacuum chamber 201 is communicated with the vacuuming action end of the vacuum pump 300, the vacuum chamber 201 is maintained in a sealed environment, and since the injection port 101a is also communicated with the injection pipeline 100, and the injection pipeline 100 is already used for communicating with the electrolyte barrel before injecting the electrolyte, thus ensuring that the whole injection process is in a sealed environment; then, the electrolyte passes through the electrolyte injection pipeline 100 and flows into the battery cell through the electrolyte injection port 101a, and the first electrolyte injection of the battery is completed; next, the battery enters a formation stage and generates gas, at this time, the vacuum chamber 201 and the gas passage 401 are sequentially vacuumized by using the vacuum pump 300, that is, the battery core is vacuumized by using the vacuum pipeline 200, so that the gas in the battery core is pumped away, and the gas is prevented from forming a solid electrolyte membrane on the surfaces of the positive and negative electrode materials, so that the impedance of the battery is reduced, the cycle performance of the battery is better, and the electrolyte is prevented from being pumped away when the vacuum pipeline 200 is vacuumized because the liquid injection pipeline 100 is arranged in the gas passage 401 in a penetrating manner; and finally, injecting the electrolyte for the second time of the battery, namely injecting the electrolyte into the battery cell again through the electrolyte injection pipeline 100, so that the electrolyte is injected twice into the battery cell, and sufficient electrolyte is contained in the battery cell, thereby improving the cycle performance of the battery.
In one embodiment, referring to fig. 3, the vacuum ports 402 are provided in plurality, and the vacuum ports 402 are uniformly distributed in the ring seal 400. In this embodiment, since the annular sealing member 400 has the plurality of vacuum ports 402, when the plurality of vacuum ports 402 are vacuumized, the annular sealing member 400 can be more tightly attached to the outer wall of the liquid injection port, thereby providing a more reliable sealing environment for injecting liquid into the battery.
In one embodiment, the annular seal is a sealing rubber ring. Therefore, the sealing effect of the annular sealing element is better.
In one embodiment, referring to fig. 2, a sealing flange 210 is disposed at the top of the vacuum pipe 200, and the sealing flange is sleeved on the outer circumference of the liquid injection pipe 100. It can be understood that there may be a gap formed when the vacuum pipe 200 is sleeved on the outer periphery of the liquid injection pipe 100, and the vacuum pipe 200 may be used to extract gas in the core when vacuuming, so the vacuum pipe 200 needs to be kept in a sealed environment, and therefore, a sealing flange is provided on the top of the vacuum pipe 200 to seal the gap between the vacuum pipe 200 and the liquid injection pipe 100.
In one embodiment, the liquid injection pipeline and the vacuum pipeline are integrally formed. Therefore, a gap is prevented from being formed between the liquid injection pipeline and the vacuum pipeline, and normal operation of vacuumizing the vacuum pipeline is ensured.
In one embodiment, referring to fig. 4, the cylindrical battery filling device 10 further includes two sealing plugs 500, a liquid inlet 101 and a liquid outlet 102 are respectively formed at two ends of the liquid filling pipeline 100, the liquid inlet 101 is used for inputting electrolyte, the liquid outlet 102 is communicated with the liquid filling port, and the two sealing plugs 500 are respectively used for opening or closing the liquid inlet 101 and the liquid outlet 102. In this embodiment, when the cylindrical battery liquid injection device 10 is not used, dust is easily deposited in the liquid injection pipeline 100, thereby affecting the usability of the battery. Therefore, two sealing plugs 500 are provided, when the cylindrical battery liquid injection device 10 is idle, the two sealing plugs 500 are respectively used for closing the liquid inlet 101 and the liquid outlet 102 of the liquid injection pipeline 100 so as to keep the interior of the liquid injection pipeline 100 clean; when the cylindrical battery liquid filling device 10 is started, the liquid inlet 101 and the liquid outlet 102 of the liquid filling pipeline 100 are respectively opened through the two sealing plugs 500.
Further, the outer walls of the two sealing plugs 500 are respectively screwed with the inner wall of the liquid inlet 101 and the inner wall of the liquid outlet 102. Thus, the two sealing plugs 500 can be used for tightly sealing the liquid inlet 101 and the liquid outlet 102, and cleanness in the liquid injection pipeline 100 is ensured.
In one embodiment, referring to fig. 2, the vacuum line 200 is L-shaped. The vacuum duct 200 is formed with a vacuum chamber 201, i.e., the vacuum chamber 201 is formed in an L-shape, thereby facilitating communication between the vacuum chamber 201 and a vacuum-pumping action end of the vacuum pump 300.
The application also provides a cylinder battery liquid injection device, including electrolyte barrel and as above-mentioned arbitrary embodiment cylinder battery liquid injection device, the electrolyte barrel with annotate the liquid pipeline intercommunication.
In one embodiment, the cylindrical battery electrolyte injection device further comprises a flow controller, the flow controller is arranged on the electrolyte injection pipeline, and the flow controller is used for adjusting the output quantity of the electrolyte. Thus, the injection amount of the electrolyte in the core is convenient to adjust. It should be noted that the method of adjusting the output of the electrolyte by the flow controller is not within the scope of the present application, and the present application only protects the installation position of the flow controller.
Compared with the prior art, the utility model discloses a but not only be limited to following advantage:
1. because the outer wall of the liquid injection port is attached with the annular sealing element, the vacuum port on the annular sealing element is vacuumized, so that the annular sealing element is tightly adsorbed on the outer wall of the liquid injection port, and the liquid injection port is sequentially communicated with the gas passing channel and the vacuum chamber of the annular sealing element, and the vacuum chamber is communicated with the vacuumizing action end of the vacuum pump, the vacuum chamber is kept in a closed environment, and the liquid injection port is also communicated with the liquid injection pipeline which is used for being communicated with the electrolyte barrel before liquid injection, so that the whole liquid injection process is ensured to be in the sealed environment;
2. the battery enters a formation stage and generates gas, at the moment, a vacuum pump is used for vacuumizing the vacuum cavity and the gas passage in sequence, namely, the battery core is vacuumized through the vacuum pipeline, so that the gas in the battery core is pumped away, and a solid electrolyte membrane is prevented from being formed on the surfaces of a positive electrode material and a negative electrode material by the gas, so that the impedance of the battery is reduced, the cycle performance of the battery is better, and the electrolyte is prevented from being pumped away when the vacuum pipeline is used for vacuumizing due to the fact that the liquid injection pipeline penetrates through the gas passage;
3. in pouring into electric core through annotating liquid pipeline with electrolyte, accomplish the first notes liquid of battery, treat that the battery formation back takes out the gas in the electric core, then carry out the second time to the battery and annotate liquid, so, through annotating liquid twice to the battery for electrolyte that has the capacity in the electric core, and then improved the cyclicity performance of battery.
The above-mentioned embodiments only represent several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A cylindrical battery liquid injection device is characterized by comprising:
a liquid injection pipeline;
the vacuum pipeline is sleeved on the periphery of the liquid injection pipeline and is provided with a vacuum cavity;
the vacuumizing action end of the vacuum pump is communicated with the vacuum cavity;
annular sealing member, the one end of annular sealing member is located the bottom of vacuum pipe, be formed with the gas passageway in the annular sealing member, the gas passageway with the vacuum cavity intercommunication, the gas passageway still be used for with annotate liquid mouth intercommunication, it wears to locate to annotate the liquid pipeline cross the gas passageway, just annotate the liquid pipeline be used for with annotate liquid mouth intercommunication, be formed with the vacuum mouth on the annular sealing member, so that the other end of annular sealing member is used for the vacuum pump during operation subsides are located annotate on the outer wall of liquid mouth.
2. The electrolyte injection device for the cylindrical battery according to claim 1, wherein a plurality of vacuum ports are provided, and the plurality of vacuum ports are uniformly distributed on the annular sealing member.
3. The cylindrical battery filling device according to claim 1, wherein the annular sealing member is a sealing rubber ring.
4. The cylindrical battery electrolyte injection device according to claim 1, wherein a sealing flange is arranged at the top of the vacuum pipeline, and the sealing flange is sleeved on the periphery of the electrolyte injection pipeline.
5. The cylindrical battery electrolyte injection device according to claim 1, wherein the electrolyte injection pipe is integrally formed with the vacuum pipe.
6. The cylindrical battery filling device according to claim 1, further comprising two sealing plugs, wherein a liquid inlet and a liquid outlet are formed at two ends of the filling pipeline, respectively, the liquid inlet is used for inputting electrolyte, the liquid outlet is communicated with the liquid filling port, and the two sealing plugs are used for opening or closing the liquid inlet and the liquid outlet, respectively.
7. The cylindrical battery liquid filling device according to claim 6, wherein the outer walls of the two sealing plugs are respectively screwed with the inner wall of the liquid inlet and the inner wall of the liquid outlet.
8. The cylindrical battery electrolyte injection device according to claim 1, wherein the vacuum pipe is L-shaped.
9. A cylindrical battery electrolyte injection device, characterized by comprising an electrolyte barrel and the cylindrical battery electrolyte injection device as claimed in any one of claims 1 to 8, wherein the electrolyte barrel is communicated with the electrolyte injection pipeline.
10. The cylindrical battery electrolyte injection apparatus according to claim 9, further comprising a flow controller, wherein the flow controller is disposed on the electrolyte injection pipeline, and the flow controller is configured to adjust an output of the electrolyte.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222826027.9U CN218731689U (en) | 2022-10-25 | 2022-10-25 | Cylindrical battery liquid injection device and equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222826027.9U CN218731689U (en) | 2022-10-25 | 2022-10-25 | Cylindrical battery liquid injection device and equipment |
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| CN218731689U true CN218731689U (en) | 2023-03-24 |
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| CN202222826027.9U Active CN218731689U (en) | 2022-10-25 | 2022-10-25 | Cylindrical battery liquid injection device and equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118111636A (en) * | 2024-04-29 | 2024-05-31 | 宁德时代新能源科技股份有限公司 | Device, system and method for detecting air tightness of battery cell |
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2022
- 2022-10-25 CN CN202222826027.9U patent/CN218731689U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118111636A (en) * | 2024-04-29 | 2024-05-31 | 宁德时代新能源科技股份有限公司 | Device, system and method for detecting air tightness of battery cell |
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