CN103367693A - Drying and liquid injection system of lithium battery and drying and liquid injection method - Google Patents
Drying and liquid injection system of lithium battery and drying and liquid injection method Download PDFInfo
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- CN103367693A CN103367693A CN2013103110460A CN201310311046A CN103367693A CN 103367693 A CN103367693 A CN 103367693A CN 2013103110460 A CN2013103110460 A CN 2013103110460A CN 201310311046 A CN201310311046 A CN 201310311046A CN 103367693 A CN103367693 A CN 103367693A
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- 238000002347 injection Methods 0.000 title claims abstract description 118
- 239000007924 injection Substances 0.000 title claims abstract description 118
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 108
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 107
- 239000007788 liquid Substances 0.000 title claims abstract description 82
- 238000001035 drying Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 47
- 239000012530 fluid Substances 0.000 claims description 38
- 230000037452 priming Effects 0.000 claims description 28
- 239000003792 electrolyte Substances 0.000 claims description 18
- 238000007789 sealing Methods 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract description 5
- 229910001416 lithium ion Inorganic materials 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000011031 large-scale manufacturing process Methods 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000010412 perfusion Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000000844 transformation Methods 0.000 description 2
- 239000005955 Ferric phosphate Substances 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229940032958 ferric phosphate Drugs 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 1
- 229910000399 iron(III) phosphate Inorganic materials 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000004630 mental health Effects 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
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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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- Filling, Topping-Up Batteries (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a drying and liquid injection system of a lithium battery. The drying and liquid injection system of the lithium battery comprises a heating device (3), a liquid injection device (2), and a vacuum air-extracting device (4). The drying and liquid injection system of the lithium battery is characterized in that the heating device comprises two heat-conduction rods (31), and a heat source (32)for heating the heat-conduction rods (31); one heat-conduction rod (31) is contacted, for heating, with a lithium battery positive-electrode column (11), and the other heat-conduction rod (31) is contacted, for heating, with a lithium battery negative-electrode column (12); the liquid injection device (2), the vacuum air-extracting device (4) are in controlled connection with a lithium battery electrical-core liquid injection port (13) via a tee joint (6); after the vacuum air-extracting device (4) is connected with the lithium battery electrical-core liquid injection port (13) for vacuumizing operation, a lithium battery electrical-core is heated by a heating device for drying treatment, and then a liquid injection device (2) is opened, and is connected to the lithium battery electrical-core liquid injection port (13) for negative-pressure liquid injection operation. The drying and liquid injection system is used for heating and drying, and has high water removal efficiency and liquid injection efficiency; the electrical core quality and consistency are improved; and the drying and liquid injection system is suitable for large scale production of lithium ion batteries.
Description
Technical field
The invention belongs to the lithium ion battery production technical field, be specifically related to the dry liquid injection system of a kind of lithium battery and dry electrolyte filling method.
Background technology
Lithium ion battery has the advantages such as high-energy-density, high output voltage, high-output power, quick charge and low public hazards, and along with popularizing of green energy resource, the range of application of lithium ion battery is more and more extensive, but its safety issue hampers its development always.
Lithium battery is produced, and especially in the large-sized power battery production process, battery core must heat drying before perfusion electrolyte, to reduce battery core internal moisture content, avoids electrolyte and the living side reaction of steeping in water for reconstitution after the fluid injection.The method of existing battery core drying is that battery core is placed in the airtight container, by the heating components and parts container inner wall and gas in container is heated, and simultaneously container is vacuumized to realize drying to battery core.On the one hand, required heating container volume is larger, heats required energy consumption also large; On the other hand, closed container is vacuumized, can reduce again its internal convection medium, obviously reduce heat transfer efficiency, can not effectively heat inside battery barrier film and pole piece, the moisture of the absorption such as battery core inner pole piece, barrier film is difficult the eliminating.
In addition, dried lithium battery electric core is transferred to after abolishing vacuum and again vacuumizes again fluid injection in hothouse or the filling machine, the operative employee needs for a long time at dry in-house operation, the steam volatilization of human body itself, so that the fluid injection environment can't guarantee the drying property of stable and consistent, and the operative employee is for a long time in dry office work, and the pernicious gas that dry atmosphere and electrolyte volatilize is very large on operative employee's physical and mental health impact; And battery is dry, the fluid injection procedure quality is restive.The present invention therefore.
Summary of the invention
The invention provides the dry liquid injection system of a kind of lithium battery, thereby improve drying efficiency and fluid injection efficient in the Production Process of Lithium Battery, reduce the energy consumption in the Production Process of Lithium Battery, improved dry, fluid injection quality, guarantee product stability.
In order to solve these problems of the prior art, technical scheme provided by the invention is:
The dry liquid injection system of a kind of lithium battery, comprise heater, priming device, vacuum suction device, it is characterized in that described heater comprises the thermal source of two heat conductive rods, heating heat conductive rod, wherein a heat conductive rod contacts heating with lithium battery positive electricity pole, and another heat conductive rod contacts heating with the negative electrodes for lithium batteries post; Described priming device, vacuum suction device are communicated with the control of lithium battery electric core liquid injection port by threeway; Carry out drying processing by heater heating lithium battery electric core when the vacuum air extractor is communicated with the lithium battery electric core liquid injection port after vacuumizing operation, then open priming device and carry out the negative pressure liquid injection operation with being communicated with of lithium battery electric core liquid injection port.
Preferred technical scheme is: described heater also comprises heat pipe, in the described heat pipe thermal source is set, and described thermal source contacts heating with heat conductive rod; Described heat conductive rod one end stretches out heat pipe and electrode of lithium cell capital close contact.
Preferred technical scheme is: described thermal source is electrical heating wire, and described electrical heating wire two ends connect respectively heat conductive rod, the contact position set temperature controller of described heat conductive rod and lithium battery pole.
Preferred technical scheme is: described heat pipe sealing, described thermal source is heat-conducting liquid or the heat-conducting gas that passes in the heat pipe, the contact position set temperature controller of described heat conductive rod and lithium battery pole.
Preferred technical scheme is: described heat pipe sealing, described thermal source comprises conduction oil and the electrical heating wire that passes in the heat pipe, described electrical heating wire is immersed in the conduction oil, and two ends connect respectively heat conductive rod, the contact position set temperature controller of described heat conductive rod and lithium battery pole.
Preferred technical scheme is: described system also comprises attemperator, described attemperator comprises adiabatic box, described adiabatic box docks with lithium battery casing, and described heater is arranged in the adiabatic box, and described adiabatic box contacts with the lithium battery pole by holding out against the spring compression heat conductive rod.
Preferred technical scheme is: described threeway is provided with the vacuum pump interface of vacuum control valve control, the fluid injection interface of fluid injection control valve control and the connecting interface that seals with the lithium battery electric core liquid injection port; Described vacuum suction device is the vacuum pump that is connected with the vacuum pump interface, and described vacuum control valve control vacuum pump is communicated with the lithium battery electric core liquid injection port; Described priming device is the reservoir that is connected with the fluid injection interface, and described fluid injection control valve control reservoir is communicated with the lithium battery electric core liquid injection port.
Preferred technical scheme is: the vacuum gauge of described vacuum control valve arranged outside monitoring lithium battery in-core vacuum degree; The topping-up pump of described fluid injection control valve arranged outside monitoring priming device reservoir quantity is such as the HighPower pump.
Another object of the present invention is to provide the dry liquid injection system of the described lithium battery of a kind of employing to carry out the dry electrolyte filling method of lithium battery, it is characterized in that said method comprising the steps of:
(1) adopt threeway control to close being communicated with of priming device and lithium battery electric core liquid injection port, open vacuum suction device and be communicated with the lithium battery electric core liquid injection port, vacuumize operation, the vacuum degree of controlling battery core inside is-50 to arrive-101KPa;
(2) adopt heater that lithium battery is carried out hot conduction-type heat drying, the temperature of control heat conductive rod is between 40～150 ℃, and the time of heating is controlled at 0.1～10 hour;
(3) adopt threeway control to close vacuum suction device and be communicated with the lithium battery electric core liquid injection port, open priming device and carry out battery core fluid injection operation with being communicated with of lithium battery electric core liquid injection port.
Preferred technical scheme is: the vacuum degree of control battery core inside is-70 to-99Kpa in the described method step (1); Temperature control 60-90 degree in the step (2), time 2-4 hour, lithium battery in-core moisture was less than 100ppm after control was dry.
Technical solution of the present invention has realized the efficient heat drying of lithium battery and electrolyte filling method, and described method realizes drying and dried electrolyte filling purpose to battery by the dry liquid injection system of special lithium battery.The dry liquid injection system of lithium battery comprises heater, attemperator, vacuum suction device and priming device.
Described heater comprises heat conductive rod, thermal source and temperature controller.Heat conductive rod is selected thermal conductivity higher and corrosion-resistant metal such as the making such as nickel-clad copper or aluminium, adopt top-closed structure to contact with the battery core positive and negative terminals, utilize a battery core collector metal forming that is connected with the direct ohm of positive and negative terminals that heat is directly conducted to battery core inside, improve the efficiency of heating surface of battery core; Described thermal source adopts the direct electric heating of resistance wire, or the inner logical vapours of heat pipe, hot water or deep fat heating, also can adopt the heating of deep fat heat pipe built-in resistor silk; Thermal source directly is connected with heat conductive rod, heat conductive rod is carried out hot conduction-type heating, and the temperature of being controlled heat conductive rod by temperature controller is between 40～150 ℃, and the time of heating is controlled at 0.1～10 hour.
Described attemperator adopts with battery case same material (such as ABS, PE plastics etc.) and makes, and to the heating region insulation, reduces as much as possible thermal loss, reduces energy consumption.Described vacuum suction device directly carries out vacuum to battery core by the battery core liquid injection port and draws gas, and is in relative negative pressure state to guarantee battery core inside, and vacuum degree is-50 to-101KPa.Described priming device is the reservoir that is communicated with threeway, is specifically as follows electrolyte reservoir vessel (such as stainless steel storage tank).
Priming device and vacuum suction device share a threeway (being generally acid and alkali-resistance metal, pottery or macromolecular material), three one of them interfaces of interface of threeway (connecting interface) insert the battery core liquid injection port, an interface (vacuum pump interface) connects vacuum suction device, and last interface (fluid injection interface) connects priming device.Described threeway is provided with two valves: vacuum control valve, fluid injection control valve.After the battery core heat drying finished, the switching three-way valve was communicated with liquid injection port with priming device, utilize battery core internal negative pressure state, and (5～7g/Ah) directly suck battery core inside by the battery core liquid injection port, finish the battery core fluid injection with quantitative electrolyte in the priming device; After finishing battery core drying, fluid injection, in the environment of drying to battery core pressure release, sealing.
Threeway and heater, attemperator with valve are fixed as one.The generation vacuum because vacuum suction device is bled, the heat conductive rod self-priming holds out against with the battery plus-negative plate post and directly contacts.
Principle of the present invention is that the metal (such as copper or aluminium) that utilizes thermal conductivity higher directly contacts with battery copper, aluminium pole, directly heat the inner Copper Foil of battery core, aluminum foil current collector, positive/negative plate and barrier film by the heat conduction, reach the purpose that the battery core drying dewaters thereby by the battery core liquid injection port the direct vacuum of battery core is drawn gas simultaneously; Drying dewaters after step finishes, and utilizes the negative pressure state of battery core inside, and quantitative electrolyte is directly sucked battery core inside by the battery core liquid injection port, finishes the battery core electrolyte filling.
The present invention relates to a kind of drying, electrolyte filling method of lithium battery, be applied to lithium battery perfusion electrolyte front battery core drying and dried fluid injection.
Heat conductive rod is preferably metal heat-conduction bar.Preferably, metal heat-conduction bar selects the higher metallic copper of thermal conductivity or aluminum to do, and adopts top-closed structure to contact with the battery core positive and negative terminals, utilizes the collector metal forming that heat is directly conducted to battery core inside and heats, and improves the efficiency of heating surface.
With respect to the scheme of prior art, advantage of the present invention is:
Technical solution of the present invention adopts direct thermal contact conductance formula heating battery core inner, directly connects the battery core inner vacuum drying of drawing gas by liquid injection port; Recycling battery core internal negative pressure directly sucks battery core inside with electrolyte; link up and finish drying, two battery core production of the fluid injection critical process of battery core; heat drying, water rem oval is high, fluid injection efficient is high; solved drying process and fluid injection operation workshop in the present production technology drop into high, use cost is high, human body is had injury and can not guarantee the problems of crucial dry, fluid injection process quality; significantly reduce input cost and operating cost; improve battery core quality and consistency, be fit to the production of scale lithium ion battery.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples:
Fig. 1 is the structural representation of the dry liquid injection system of embodiment of the invention lithium battery;
Fig. 2 is another structural representation of the dry liquid injection system of embodiment of the invention lithium battery;
Fig. 3 is the structural representation of the dry liquid injection system threeway of embodiment of the invention lithium battery.
Wherein 2 is priming device; 4 is the vacuum vapor extraction device; 6 are threeway; 11 is the battery core positive terminal; 12 is the battery core negative terminal; 13 is the lithium battery electric core liquid injection port; 14 is the battery core positive plate; 15 is the battery core negative plate; 16 is electric core membrane; 17 is battery container; 31 is heat conductive rod (metal); 32 is thermal source (electrical heating wire); 33 is heat pipe; 34 is temperature controller; 51 is adiabatic box; 52 for holding out against spring; 61 is the vacuum pump interface; 62 are the fluid injection interface; 63 is connecting interface; 64 is vacuum control valve; 65 are the fluid injection control valve; 66 is vacuum gauge; 67 topping-up pumps for the control reservoir quantity.
Embodiment
Below in conjunction with specific embodiment such scheme is described further.Should be understood that these embodiment are not limited to limit the scope of the invention for explanation the present invention, all equivalent transformations that Spirit Essence is done according to the present invention or modification all should be encompassed within protection scope of the present invention.The implementation condition that adopts among the embodiment can be done further adjustment according to the condition of concrete producer, and not marked implementation condition is generally the condition in the normal experiment.
Embodiment
Be depicted as the dry liquid injection system of described lithium battery such as Fig. 1～3, comprise heater, priming device 2, vacuum suction device 4 and attemperator, described heater comprises the thermal source 32 of two heat conductive rods 31, heating heat conductive rod 31, wherein a heat conductive rod 31 contacts heating with lithium battery positive electricity pole 11, and another heat conductive rod 31 contacts heating with negative electrodes for lithium batteries post 12; Described priming device 2, vacuum suction device 4 are communicated with 13 controls of lithium battery electric core liquid injection port by threeway 6; Carry out drying processing by heater heating lithium battery electric core when vacuum air extractor 4 is communicated with lithium battery electric core liquid injection port 13 after vacuumizing operation, then open priming device 2 and carry out the negative pressure liquid injection operation with being communicated with of lithium battery electric core liquid injection port 13.
Described heater also comprises heat pipe 33, the described heat pipe 33 interior thermals source 32 that arrange, and described thermal source 32 contacts heating with heat conductive rod 31; Described heat conductive rod 31 1 ends stretch out heat pipe 33 and hold out against with lithium battery pole 11,12 and contact.Described heat pipe sealing, described thermal source comprises conduction oil and the electrical heating wire that passes in the heat pipe 33, described electrical heating wire is immersed in the conduction oil, and two ends connect respectively heat conductive rod 31, the contact position set temperature controller 34 of described heat conductive rod 31 and lithium battery pole.
Described attemperator comprises adiabatic box 51, and described adiabatic box 51 docks with lithium battery casing, and described heater is arranged in the adiabatic box 51, and described adiabatic box 51 contacts with the lithium battery pole by holding out against spring 52 compression heat conductive rods 31.
Described threeway 6 is provided with the vacuum pump interface 61 of vacuum control valve 64 controls, the fluid injection interface 62 of fluid injection control valve 65 controls and the connecting interface 63 that seals with lithium battery electric core liquid injection port 13; Described vacuum suction device is the vacuum pump that is connected with vacuum pump interface 61, and described vacuum control valve 64 control vacuum pumps are communicated with lithium battery electric core liquid injection port 13; Described priming device 2 is the reservoir 21 that is connected with fluid injection interface 62, and described fluid injection control valve 65 control reservoirs 21 are communicated with lithium battery electric core liquid injection port 13.The vacuum gauge 66 of described vacuum control valve 64 arranged outside monitoring lithium battery in-core vacuum degree; The topping-up pump 67 of described fluid injection control valve 65 arranged outside control reservoir quantity.
When carrying out the dry fluid injection of lithium battery according to following steps:
(1) adopt threeway 6 controls to close being communicated with of priming device 2 and lithium battery electric core liquid injection port 13, open vacuum suction device 4 and be communicated with lithium battery electric core liquid injection port 13, vacuumize operation, the vacuum degree of controlling battery core inside is-50 to arrive-101KPa.
(2) adopt heater that lithium battery is carried out hot conduction-type heat drying, the temperature of control heat conductive rod is between 40～150 ℃, and the time of heating is controlled at 0.1～10 hour; Lithium battery in-core moisture was less than 100ppm after control was dry.
(3) adopt threeway 6 controls to close vacuum suction device 4 and be communicated with lithium battery electric core liquid injection port 13, open priming device 2 and carry out battery core fluid injection operation with being communicated with of lithium battery electric core liquid injection port 13.
The dry fluid injection of the square ferric phosphate lithium cell of application examples 100Ah
The good lithium battery of the adiabatic lid of step 1 attemperator, extraction steam pipe inserts threeway vacuum pump interface, and three-way valve switches the battery core liquid injection port and is communicated with the vacuum pump interface;
Step 2 dynamic vacuum draws gas, and vacuum keep-70 is to-99Kpa;
Step 4 sampling observation battery core, positive pole, negative pole, barrier film moisture all require less than 100ppm;
Step 5 switching three-way valve is communicated with battery core liquid injection port and priming device (600g electrolyte prestores), and negative pressure all sucks battery core inside with electrolyte;
Step 7 battery core is delivered to formation process.
Above method to the dry liquid injection system of a kind of lithium battery provided by the present invention and dry fluid injection thereof has been described in detail and introduces.Above-mentioned example only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the people who is familiar with technique can understand content of the present invention and according to this enforcement, can not limit protection scope of the present invention with this.All equivalent transformations that Spirit Essence is done according to the present invention or modification all should be encompassed within protection scope of the present invention.
Claims (9)
1. the dry liquid injection system of a lithium battery, comprise heater, priming device (2), vacuum suction device (4), it is characterized in that described heater comprises the thermal source (32) of two heat conductive rods (31), heating heat conductive rod (31), wherein a heat conductive rod (31) contacts heating with lithium battery positive electricity pole (11), and another heat conductive rod (31) contacts heating with negative electrodes for lithium batteries post (12); Described priming device (2), vacuum suction device (4) are communicated with lithium battery electric core liquid injection port (13) control by threeway (6); Carry out drying processing by heater heating lithium battery electric core when vacuum air extractor (4) is communicated with lithium battery electric core liquid injection port (13) after vacuumizing operation, then open priming device (2) and carry out the negative pressure liquid injection operation with being communicated with of lithium battery electric core liquid injection port (13).
2. the dry liquid injection system of lithium battery according to claim 1 is characterized in that described heater also comprises heat pipe (33), and thermal source (32) is set in the described heat pipe (33), and described thermal source (32) contacts heating with heat conductive rod (31); Described heat conductive rod (31) one ends stretch out heat pipe (33) and hold out against with lithium battery pole (11,12) and contact.
3. the dry liquid injection system of lithium battery according to claim 2, it is characterized in that described thermal source is electrical heating wire, described electrical heating wire two ends connect respectively heat conductive rod (31), the contact position set temperature controller (34) of described heat conductive rod (31) and lithium battery pole.
4. the dry liquid injection system of lithium battery according to claim 2, it is characterized in that described heat pipe sealing, described thermal source is for passing into heat-conducting liquid or the heat-conducting gas in the heat pipe (33), the contact position set temperature controller (34) of described heat conductive rod (31) and lithium battery pole.
5. the dry liquid injection system of lithium battery according to claim 2, it is characterized in that described heat pipe sealing, described thermal source comprises conduction oil and the electrical heating wire that passes in the heat pipe (33), described electrical heating wire is immersed in the conduction oil, and two ends connect respectively heat conductive rod (31), the contact position set temperature controller (34) of described heat conductive rod (31) and lithium battery pole.
6. the dry liquid injection system of lithium battery according to claim 2, it is characterized in that described system also comprises attemperator, described attemperator comprises adiabatic box (51), described adiabatic box (51) docks with lithium battery casing (17), described heater is arranged in the adiabatic box (51), and described adiabatic box (51) contacts with the lithium battery pole by holding out against spring (52) compression heat conductive rod (31).
7. the dry liquid injection system of lithium battery according to claim 2 is characterized in that described threeway (6) is provided with the fluid injection interface (62) of the vacuum pump interface (61) of vacuum control valve (64) control, fluid injection control valve (65) control and the connecting interface (63) that seals with lithium battery electric core liquid injection port (13); Described vacuum suction device is the vacuum pump that is connected with vacuum pump interface (61), and described vacuum control valve (64) control vacuum pump is communicated with lithium battery electric core liquid injection port (13); Described priming device (2) is the reservoir (21) that is connected with fluid injection interface (62), and described fluid injection control valve (65) control reservoir (21) is communicated with lithium battery electric core liquid injection port (13).
8. the dry liquid injection system of lithium battery according to claim 7 is characterized in that the vacuum gauge (66) of described vacuum control valve (64) arranged outside monitoring lithium battery in-core vacuum degree; The topping-up pump (67) of described fluid injection control valve (65) arranged outside monitoring priming device reservoir quantity.
9. one kind is adopted the dry liquid injection system of lithium battery claimed in claim 1 to carry out the dry electrolyte filling method of lithium battery, it is characterized in that said method comprising the steps of:
(1) adopt threeway (6) control to close being communicated with of priming device (2) and lithium battery electric core liquid injection port (13), opening vacuum suction device (4) is communicated with lithium battery electric core liquid injection port (13), vacuumize operation, the vacuum degree of control battery core inside be-50 to arrive-101KPa;
(2) adopt heater that lithium battery is carried out hot conduction-type heat drying, the temperature of control heat conductive rod is between 40～150 ℃, the time of heating is controlled at 0.1～10 hour, and lithium battery core inner positive/negative plate and diaphragm material moisture were less than 100ppm after control was dry;
(3) adopt threeway (6) control to close vacuum suction device (4) and be communicated with lithium battery electric core liquid injection port (13), unlatching priming device (2) is communicated with lithium battery electric core liquid injection port (13), carries out translation interface and finishes battery core fluid injection operation.
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Cited By (7)
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| CN105180643A (en) * | 2015-09-22 | 2015-12-23 | 中航锂电（洛阳）有限公司 | Lithium battery drying frame, lithium battery driving device and method for drying lithium batteries |
| CN105300056A (en) * | 2015-12-01 | 2016-02-03 | 无锡烯晶碳能新材料科技有限公司 | Pole core vacuum-drying device and technology |
| CN106159187A (en) * | 2016-08-25 | 2016-11-23 | 大连比克动力电池有限公司 | There is battery liquid-filling device and the electrolyte filling method thereof of heating function |
| CN106568322A (en) * | 2016-10-19 | 2017-04-19 | 浙江超威创元实业有限公司 | Battery manufacturing method and high baking hurdle for battery manufacturing |
| CN106784592A (en) * | 2017-01-25 | 2017-05-31 | 天津清源电动车辆有限责任公司 | A kind of soft-package battery liquid injection system and electrolyte filling method |
| CN107959047A (en) * | 2017-12-25 | 2018-04-24 | 北京乐华锂能科技有限公司 | A kind of soft package lithium battery and soft package lithium battery water-eliminating method |
| CN113839119A (en) * | 2021-09-03 | 2021-12-24 | 厦门海辰新能源科技有限公司 | Liquid inlet method of cooling liquid, battery liquid cooling module and energy storage equipment |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180643A (en) * | 2015-09-22 | 2015-12-23 | 中航锂电（洛阳）有限公司 | Lithium battery drying frame, lithium battery driving device and method for drying lithium batteries |
| CN105180643B (en) * | 2015-09-22 | 2017-11-03 | 中航锂电（洛阳）有限公司 | Lithium battery drying frame, lithium battery drying device and the method for drying lithium battery |
| CN105300056A (en) * | 2015-12-01 | 2016-02-03 | 无锡烯晶碳能新材料科技有限公司 | Pole core vacuum-drying device and technology |
| CN105300056B (en) * | 2015-12-01 | 2017-11-14 | 无锡烯晶碳能新材料科技有限公司 | A kind of electrode cores Minton dryer and technique |
| CN106159187A (en) * | 2016-08-25 | 2016-11-23 | 大连比克动力电池有限公司 | There is battery liquid-filling device and the electrolyte filling method thereof of heating function |
| CN106159187B (en) * | 2016-08-25 | 2019-01-29 | 大连中比动力电池有限公司 | Battery liquid-filling device and its electrolyte filling method with heating function |
| CN106568322A (en) * | 2016-10-19 | 2017-04-19 | 浙江超威创元实业有限公司 | Battery manufacturing method and high baking hurdle for battery manufacturing |
| CN106568322B (en) * | 2016-10-19 | 2020-03-27 | 浙江超威创元实业有限公司 | Manufacturing method of battery and high-foot baking fence for manufacturing battery |
| CN106784592A (en) * | 2017-01-25 | 2017-05-31 | 天津清源电动车辆有限责任公司 | A kind of soft-package battery liquid injection system and electrolyte filling method |
| CN106784592B (en) * | 2017-01-25 | 2019-05-28 | 天津清源电动车辆有限责任公司 | A kind of soft-package battery liquid injection system and electrolyte filling method |
| CN107959047A (en) * | 2017-12-25 | 2018-04-24 | 北京乐华锂能科技有限公司 | A kind of soft package lithium battery and soft package lithium battery water-eliminating method |
| CN113839119A (en) * | 2021-09-03 | 2021-12-24 | 厦门海辰新能源科技有限公司 | Liquid inlet method of cooling liquid, battery liquid cooling module and energy storage equipment |
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