CN115377625A - Liquid injection and prevention device for lithium ion battery - Google Patents
Liquid injection and prevention device for lithium ion battery Download PDFInfo
- Publication number
- CN115377625A CN115377625A CN202210843787.2A CN202210843787A CN115377625A CN 115377625 A CN115377625 A CN 115377625A CN 202210843787 A CN202210843787 A CN 202210843787A CN 115377625 A CN115377625 A CN 115377625A
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- Prior art keywords
- liquid
- electrolyte
- liquid injection
- liquid level
- exhaust
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- 239000007788 liquid Substances 0.000 title claims abstract description 232
- 239000007924 injection Substances 0.000 title claims abstract description 90
- 238000002347 injection Methods 0.000 title claims abstract description 90
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 20
- 230000002265 prevention Effects 0.000 title claims abstract description 13
- 239000003792 electrolyte Substances 0.000 claims abstract description 74
- 239000000523 sample Substances 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000007599 discharging Methods 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 26
- 230000001105 regulatory effect Effects 0.000 claims description 16
- 239000012530 fluid Substances 0.000 claims description 12
- 230000003321 amplification Effects 0.000 claims 1
- 238000001914 filtration Methods 0.000 claims 1
- 238000003199 nucleic acid amplification method Methods 0.000 claims 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052744 lithium Inorganic materials 0.000 abstract description 3
- 238000002955 isolation Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000018199 S phase Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
- H01M50/618—Pressure control
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
- H01M50/627—Filling ports
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/668—Means for preventing spilling of liquid or electrolyte, e.g. when the battery is tilted or turned over
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Filling, Topping-Up Batteries (AREA)
Abstract
The invention discloses a lithium ion battery liquid injection blowout prevention device, which belongs to the technical field of lithium batteries and comprises a liquid injection head arranged on a battery liquid injection port, wherein a laser probe is arranged on the liquid injection head, the laser probe comprises a transmitter and a receiver, an electrolyte buffer cavity and an exhaust cavity are arranged in the liquid injection head, a liquid discharge port for discharging electrolyte into the battery liquid injection port is arranged in the electrolyte buffer cavity, a liquid discharge port control valve is arranged at the liquid discharge port, an exhaust port communicated with the liquid discharge port is arranged in the exhaust cavity, the laser probe is used for generating laser to the liquid level, the liquid level of the current liquid level can be calculated according to the phase difference between a reflected signal and a transmitted signal, and after liquid injection is finished, the liquid level of the electrolyte is reduced in the process of infiltrating an electric core, and by the structure of the scheme, the exhaust port can be opened after the liquid level is reduced to meet the requirement, and the liquid injection problem caused by the fact that the exhaust port is too close to the liquid level is avoided.
Description
Technical Field
The invention relates to the technical field of lithium batteries, in particular to a liquid injection and prevention device for a lithium ion battery.
Background
Lithium cell production process flow is complicated, and materials such as the inside pole piece of electric core, diaphragm are subject to influences such as storage time, supplied materials, environment and lead to batch intermediate to store up in the difference, and then lead to electric core inner space filling rate uniformity relatively poor, and the electric core that the filling rate is big leads to the electric core to annotate liquid back liquid level too high easily, and then leads to square aluminum hull electric core to annotate liquid hydrojet problem: common electric core annotates the liquid mode and has two kinds, isobaric notes liquid, the liquid is annotated to the differential pressure, annotates the inside pressure-fired state that is of back electric core of liquid completion, in the twinkling of an eye lifting at notes liquid mouth, the inside atmospheric pressure of electric core resumes to the atmospheric pressure state through annotating liquid hole pressure release, if electrolyte liquid level distance annotates liquid hole surface distance too closely, just causes electric core to annotate liquid back hydrojet or follow-up commodity circulation in-process discharge pollution electric core easily, influences electric core performance, outward appearance and seal nail welding yields.
For example, the lithium ion battery vacuum liquid injection machine and the lithium ion battery liquid injection head structure thereof disclosed in the chinese patent literature have a publication number of CN206003880U, and the lithium ion battery liquid injection head structure includes a liquid injection head body and a sealing member hermetically disposed in a liquid outlet of the liquid injection head body, and the sealing member is provided with an isolation groove and a liquid injection channel leading to a liquid injection cavity in the liquid injection head body; when the sealing member contradicts with the battery upper cover plate, notes liquid hole on notes liquid chamber and the battery upper cover plate is annotated in the notes liquid passageway intercommunication, and the isolation groove cover is established outside the rivet on the battery upper cover plate. Therefore, in the process of injecting the electrolyte into the battery from the electrolyte injection cavity, the electrolyte cannot leak out of the electrolyte injection channel, so that a large amount of electrolyte cannot remain on the upper cover plate of the battery after the electrolyte injection is finished, and the waste is avoided; meanwhile, the rivet cannot be corroded due to contact with the rivet when entering the isolation groove, so that the liquid injection quality is finally improved, and the liquid injection operation is more efficient and simpler. However, this patent has a disadvantage in that, when the liquid injection head is directly separated from the battery after the completion of the liquid injection, the liquid may be injected due to a high liquid level.
Disclosure of Invention
The invention discloses a liquid injection and blowout prevention device for a lithium ion battery, which aims to overcome the problems that after liquid injection of an injection head is finished, liquid injection is easily generated in the process of recovering the internal pressure of a battery cell, so that electrolyte is reduced, and the performance, the appearance and the welding yield of a sealing nail are influenced.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a lithium ion battery annotates liquid and prevents liquid spray device, is including installing the notes liquid head on the liquid mouth is annotated to the battery, annotates overhead laser probe of installing of liquid, and laser probe includes transmitter and receiver, annotates the liquid head and is equipped with electrolyte buffer memory chamber and exhaust chamber, and electrolyte buffer memory intracavity is equipped with and is used for discharging the leakage fluid dram that the battery was annotated in the liquid mouth, and leakage fluid dram department installs the leakage fluid dram control valve, is equipped with the gas vent with the leakage fluid dram intercommunication in the exhaust chamber.
Annotate the liquid head and be arranged in annotating liquid to battery electricity core, laser probe is used for taking place laser to the liquid level, and laser can reflect after contacting the liquid level, and laser probe produces the signal after receiving the laser of reflection, according to reflection signal and transmission signal's phase difference, can calculate the liquid level of current liquid level, because annotate the liquid and accomplish the back, electrolyte is at the in-process of infiltrating electric core, and its liquid level can descend, through the structure of this scheme, can make the gas vent descend to the satisfying the requirement after and open again at the liquid level, avoided the gas vent and the liquid level hydrojet problem that leads to near excessively.
Preferably, the lithium ion battery liquid injection and blowout prevention device further comprises a logic controller, the logic controller is connected with the laser probe, laser generated by the emitter is received by the receiver to form a liquid level signal, the liquid level signal is filtered and amplified, and then the liquid level difference between the current liquid level and the reference liquid level is calculated according to the phase difference between the liquid level signal and the reference signal, so that the current liquid level is obtained.
Preferably, an exhaust control valve is arranged at the exhaust port, the liquid outlet is closed after liquid injection is finished, the exhaust control valve is in a closed state firstly, and the exhaust control valve is opened after the current liquid level is lower than the reference liquid level; the exhaust control valve is connected to the logic controller, and the opening and closing of the exhaust control valve can be controlled according to the judgment made by the logic controller.
Preferably, in the liquid injection process, the pressure regulating valve is in a closed state, the space in the electrolyte buffer cavity and the battery cell is a closed space, the liquid outlet is positioned at the bottom of the electrolyte buffer cavity, and when liquid at the liquid injection port of the battery is subjected to upward pressure and is balanced with the hydraulic pressure of the liquid outlet, the liquid outlet does not discharge liquid any more; the volume of annotating liquid is generally controlled through the time of annotating liquid to current structure, however, because this scheme is annotating the liquid in-process, electric core internal pressure constantly changes, the speed of annotating liquid is also unstable, consequently can't control the volume of annotating liquid through annotating the liquid time, this scheme is annotating the liquid in-process, notes liquid mouth department then atmospheric pressure risees, when waiting that the battery to annotate the pressure differential on liquid mouth and electrolyte buffer chamber upper portion and the hydraulic pressure of leakage fluid dram balanced, the leakage fluid dram no longer drains liquid, and the volume of discharge liquid is not influenced by flowing back speed, also not influenced by valve response time, ensure the accuracy of annotating the liquid volume.
Preferably, a pressure regulating opening communicated with the upper part of the electrolyte buffer cavity is further formed in the exhaust cavity, a pressure regulating valve is arranged at the pressure regulating opening, the pressure regulating valve is in a closed state in the liquid injection process, and after the liquid injection is finished, the pressure regulating valve is opened to balance the pressure difference between the liquid injection port and the electrolyte buffer cavity; after the pressure is balanced, the gas with the same amount as the liquid injection amount enters the liquid injection head to fill the vacant space generated after the liquid is discharged, so that the pressure in the liquid injection head is ensured to be consistent before and after the liquid injection.
As preferred, lithium ion battery annotates liquid spray prevention device and still includes electrolyte and replenishes the chamber, electrolyte buffer memory intracavity is equipped with the electrolyte with electrolyte and replenishes the chamber intercommunication and replenishes the opening, drain outlet control valve includes control valve rod, be equipped with the first sealing that is used for closing electrolyte and replenishes the open-ended on the control valve rod, and be used for closing the second sealing of drain outlet, make annotate the liquid completion back at every turn through this structure, electrolyte that electrolyte replenished the intracavity can be replenished to electrolyte buffer memory chamber, thereby make annotate the liquid back at every turn, the liquid level in electrolyte buffer memory intracavity keeps unanimous, and then make the volume of annotating liquid at every turn the same.
Preferably, a sealing ring is arranged between the liquid injection head and the battery liquid injection port, so that sealing in the liquid injection process is ensured.
Therefore, the invention has the following beneficial effects: (1) The liquid level in the battery cell can be monitored in real time, the air exhaust is started after the liquid level drops to a certain height, and the situation of liquid spraying caused by high filling rate of electrolyte in the cell is avoided; (2) The liquid discharge is controlled by the pressure at the liquid injection port, so that the accuracy of the liquid injection amount is ensured; (3) After liquid injection, the pressure in the liquid injection head and the liquid level in the electrolyte buffer cavity can be recovered, so that the next liquid injection amount is the same as that before; and (4) the liquid injection sealing performance is good.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
FIG. 2 is a flow chart of the present invention for controlling liquid discharge by detecting liquid level.
Fig. 3 is a schematic structural diagram of a second embodiment of the present invention.
In the figure: 1. the device comprises an injection head 2, a laser probe 3, an electrolyte buffer cavity 4, an exhaust cavity 5, a liquid outlet 6, an exhaust port 7, an electrolyte replenishing cavity 8, an electrolyte replenishing opening 9, a control valve rod 10, a first sealing part 11, a second sealing part 12 and a pressure regulating opening.
Detailed Description
The first embodiment is that as shown in fig. 1-2, a lithium ion battery liquid injection blowout preventer comprises a liquid injection head 1 installed on a battery liquid injection port, a sealing ring is arranged between the liquid injection head and the battery liquid injection port and used for improving the sealing performance of liquid injection, a downward laser probe 2 is installed on the lower side of the liquid injection head and comprises a transmitter and a receiver, an electrolyte buffer chamber 3 and an exhaust chamber 4 are arranged in the liquid injection head, a liquid discharge port 5 used for discharging electrolyte into the battery liquid injection port is arranged in the electrolyte buffer chamber, a liquid discharge port control valve is installed at the liquid discharge port, an exhaust port 6 communicated with the liquid discharge port is arranged in the exhaust chamber, the laser probe is connected with a logic controller, the laser generated by the transmitter is reflected after reaching a liquid level, the reflected laser is received by the receiver to form a liquid level signal, the liquid level signal is filtered and amplified, the liquid level difference between the current liquid level and the reference liquid level is calculated according to the phase difference between the current liquid level and the reference level, and the exhaust port is provided with an exhaust control valve.
When annotating the liquid and beginning, leakage fluid dram control valve is opened, exhaust the air control valve and close, electrolyte constantly pours into in the electric core into, laser probe constantly detects current liquid level simultaneously, when treating current liquid level to reach the highest point, leakage fluid dram control valve closes, exhaust the air control valve and keep closed state, in this process, electrolyte constantly soaks inside the electric core, lead to the liquid level to take place to descend, treat after the liquid level descends the setting value, exhaust the air control valve and open, the malleation gas of notes liquid mouth department carries out the pressure release to the exhaust intracavity, after the pressure release a period of time, keep exhausting the air control valve and open, and make annotate the liquid head and annotate the separation of liquid mouth, accomplish this time and annotate liquid.
In the second embodiment, as shown in fig. 3, a liquid injection and spray prevention device for a lithium ion battery comprises a liquid injection head 1 installed on a liquid injection port of the battery, a sealing ring is arranged between the liquid injection head and the liquid injection port of the battery for improving the sealing performance of liquid injection, a downward laser probe 2 is installed on the lower side of the liquid injection head, the laser probe comprises a transmitter and a receiver, an electrolyte replenishing cavity 7, an electrolyte buffer cavity 3 and an exhaust cavity 4 are arranged in the liquid injection head, an electrolyte replenishing opening 8 communicated with the electrolyte replenishing cavity is arranged at the upper end of the electrolyte buffer cavity, a liquid discharge port 5 for discharging electrolyte into the liquid injection port of the battery is arranged at the lower end of the electrolyte buffer cavity, a liquid discharge port control valve is installed at the liquid discharge port, and comprises a control valve rod 9, the control valve rod is provided with a first sealing part 10 used for closing an electrolyte supplementing opening and a second sealing part 11 used for closing a liquid discharging port, the stroke of the control valve rod comprises a first sealing position and a second sealing position, the lower end of an exhaust cavity is provided with an exhaust port 6 communicated with the liquid discharging port, the upper end of the exhaust cavity is further provided with a pressure regulating opening 12 communicated with the upper part of an electrolyte buffer cavity, the pressure regulating opening is provided with a pressure regulating valve, the exhaust port is provided with an exhaust control valve, a laser probe is connected with a logic controller, laser generated by a transmitter is reflected after reaching a liquid level, the reflected laser is received by a receiver to form a liquid level signal, and the liquid level signal is filtered and amplified, and then the liquid level difference between the current liquid level and a reference liquid level is calculated according to the phase difference between the liquid level signal and the reference signal, so that the current liquid level is obtained.
When liquid injection is started, the control valve rod is located at a first sealing position, the first sealing part is located at the electrolyte replenishing opening, the electrolyte replenishing opening is closed, the liquid outlet is opened, the exhaust control valve is closed, and the electrolyte is continuously injected into the battery cell; when the discharged liquid in the electrolyte buffer cavity reaches a set value, the electrolyte is not discharged any more, and meanwhile, the liquid level in the battery cell reaches the highest position, at the moment, the control valve rod moves downwards to a second sealing position, the second sealing portion is positioned at the liquid discharge port, so that the electrolyte replenishing opening is opened, the liquid discharge port is closed, the exhaust control valve keeps a closed state, and in the process, the electrolyte continuously infiltrates the interior of the battery cell, so that the liquid level is reduced; after the liquid level descends to the set value, the exhaust control valve is opened, the positive pressure gas at the liquid injection port is decompressed into the exhaust cavity and the electrolyte replenishing cavity, the volume of the liquid discharged from the electrolyte buffer cavity is equal to the volume of the gas entering the liquid injection head from the electric core, so after the decompression is completed, the liquid level in the electrolyte buffer cavity is recovered to be the same as that before the liquid injection, the pressure at the liquid injection port is recovered to be normal pressure, then the liquid injection head is separated from the liquid injection port, the liquid injection is completed for the time, and the condition of liquid injection is ensured not to occur.
Claims (7)
1. The utility model provides a lithium ion battery annotates liquid and prevents spouting liquid device, characterized by, including installing the notes liquid head on the liquid mouth is annotated to the battery, annotates overhead the installing laser probe of liquid, and laser probe includes transmitter and receiver, is equipped with electrolyte buffer memory chamber and exhaust chamber in annotating the liquid head, and electrolyte buffer memory intracavity is equipped with and is used for discharging the leakage fluid dram in the liquid mouth is annotated to the battery with electrolyte, and leakage fluid dram department installs the leakage fluid dram control valve, is equipped with the gas vent with the leakage fluid dram intercommunication in the exhaust chamber.
2. The lithium ion battery liquid injection and prevention device according to claim 1, further comprising a logic controller, wherein the logic controller is connected with the laser probe, laser generated by the emitter is received by the receiver to form a liquid level signal, and after filtering and amplification, the liquid level difference between the current liquid level and the reference liquid level is calculated according to the phase difference between the liquid level signal and the reference signal, so as to obtain the current liquid level.
3. The lithium ion battery liquid injection and blowout prevention device as claimed in claim 2, wherein an exhaust control valve is arranged at the exhaust port, the exhaust port is closed after liquid injection is completed, the exhaust control valve is closed first, and the exhaust control valve is opened after the current liquid level is lower than a reference liquid level.
4. The lithium ion battery liquid injection and blowout prevention device as claimed in claim 3, wherein during the liquid injection process, the pressure regulating valve is in a closed state, the space inside the electrolyte buffer cavity and the battery cell is a closed space, the liquid discharge port is located at the bottom of the electrolyte buffer cavity, and when the pressure difference between the upper parts of the electrolyte buffer cavity and the battery liquid injection port is balanced with the hydraulic pressure of the liquid discharge port, the liquid discharge port does not discharge liquid any more.
5. The lithium ion battery electrolyte injection blowout preventer as claimed in claim 4, wherein the exhaust chamber is further provided with a pressure regulating opening communicated with the upper part of the electrolyte buffer chamber, the pressure regulating opening is provided with a pressure regulating valve, the pressure regulating valve is in a closed state during electrolyte injection, and the pressure regulating valve is opened after the exhaust control valve is closed again after the battery cell is exhausted, so as to balance the pressure difference between the exhaust chamber and the electrolyte buffer chamber.
6. The lithium ion battery electrolyte injection and liquid prevention device according to claim 3, further comprising an electrolyte replenishing cavity, wherein an electrolyte replenishing opening communicated with the electrolyte replenishing cavity is formed in the electrolyte buffer cavity, the liquid discharge port control valve comprises a control valve rod, and a first sealing portion for closing the electrolyte replenishing opening and a second sealing portion for closing the liquid discharge port are formed on the control valve rod.
7. The lithium ion battery liquid injection and blowout prevention device is characterized in that a sealing ring is arranged between the liquid injection head and the battery liquid injection port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210843787.2A CN115377625A (en) | 2022-07-18 | 2022-07-18 | Liquid injection and prevention device for lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210843787.2A CN115377625A (en) | 2022-07-18 | 2022-07-18 | Liquid injection and prevention device for lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115377625A true CN115377625A (en) | 2022-11-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210843787.2A Pending CN115377625A (en) | 2022-07-18 | 2022-07-18 | Liquid injection and prevention device for lithium ion battery |
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| CN (1) | CN115377625A (en) |
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| CN214307577U (en) * | 2020-12-08 | 2021-09-28 | 江苏科诺锅炉有限公司 | Ultra-low nitrogen condensation hot water boiler gas collection chamber with protection device |
| CN216648549U (en) * | 2021-10-20 | 2022-05-31 | 惠州锂威新能源科技有限公司 | Lithium cell is with annotating liquid bottle structure, lithium cell housing and lithium cell thereof |
-
2022
- 2022-07-18 CN CN202210843787.2A patent/CN115377625A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207781832U (en) * | 2017-12-21 | 2018-08-28 | 江西佰特励电子科技有限公司 | A kind of Ni-MH battery intelligence is grown up to be a useful person |
| US20210207586A1 (en) * | 2018-05-17 | 2021-07-08 | Hydrostor Inc. | Hydrostatically compressed gas energy storage system |
| CN112033498A (en) * | 2020-08-14 | 2020-12-04 | 合肥国轩高科动力能源有限公司 | Method for detecting liquid injection efficiency of lithium ion battery |
| CN112234326A (en) * | 2020-11-20 | 2021-01-15 | 苏州凌威新能源科技有限公司 | Battery filling port structure and battery cover plate |
| CN214307577U (en) * | 2020-12-08 | 2021-09-28 | 江苏科诺锅炉有限公司 | Ultra-low nitrogen condensation hot water boiler gas collection chamber with protection device |
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