CN207317486U - A kind of apparatus for baking of electrodes of lithium-ion batteries - Google Patents

A kind of apparatus for baking of electrodes of lithium-ion batteries Download PDF

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Publication number
CN207317486U
CN207317486U CN201721172107.XU CN201721172107U CN207317486U CN 207317486 U CN207317486 U CN 207317486U CN 201721172107 U CN201721172107 U CN 201721172107U CN 207317486 U CN207317486 U CN 207317486U
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CN
China
Prior art keywords
baking
lithium
electrodes
ion batteries
preheating pipe
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Application number
CN201721172107.XU
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Chinese (zh)
Inventor
刘金良
高峰
张要枫
马晓杰
杨小花
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hebei Gree Titanium New Energy Co ltd
Gree Altairnano New Energy Inc
Original Assignee
Yinlong New Energy Co Ltd
Hebei Yinlong New Energy Co Ltd
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Priority to CN201721172107.XU priority Critical patent/CN207317486U/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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  • Battery Electrode And Active Subsutance (AREA)

Abstract

The utility model discloses a kind of apparatus for baking of electrodes of lithium-ion batteries, it includes inert gas storage tank, preheating pipe, baking mechanism, the storage tank is connected by preheating pipe with baking mechanism, its axis direction is provided with duct type gas heater on the preheating pipe.When the utility model is used, the inert gas of inert gas storage tank output is inputted in baking mechanism by preheating pipe after the heating of duct type gas heater and completes to carry out vacuum bakeout to electrodes of lithium-ion batteries;Vacuum bakeout is carried out to electrodes of lithium-ion batteries using the utility model device, pole piece obvious deformation since uneven heating produces is avoided, improves tension force uneven phenomenon during pole piece coiling, effectively raise product qualification rate.

Description

A kind of apparatus for baking of electrodes of lithium-ion batteries
Technical field
The utility model belongs to lithium ion battery baking technology field, and in particular to a kind of baking of electrodes of lithium-ion batteries Device.
Background technology
In lithium ion battery production process, baking is very important a procedure.Lithium-ion battery electrolytes are not The organic matter of aqueous molecule, performance influence of the moisture on lithium battery is very big, including the index such as voltage, internal resistance, self discharge.Moisture contains Measure it is excessive can cause product rejection, quality decline, or even product explosion.Therefore it is right respectively in multiple production processes of lithium electricity Positive/negative plate, battery core and battery carry out multiple vacuum bakeout, to be eliminated as much as moisture therein.
Pole piece toasts under high temperature, vacuum condition remove moisture removal during, it is necessary to timing inflated with nitrogen vacuum breaker, keep dry Dry environment.Since nitrogen is gas at normal temperature, in baking oven is hot environment, so inflated with nitrogen can heavy damage oven temperature field Uniformity, causes pole piece to occur to deform to a certain degree due to uneven heating, and tension force inequality is produced after baking, reduces product Qualification rate.
Utility model content
In view of this, the main purpose of the utility model is that providing a kind of apparatus for baking of electrodes of lithium-ion batteries, solution Determine existing the problem of generation tension force is uneven in baking process.
To reach above-mentioned purpose, what the technical solution of the utility model was realized in:A kind of electrodes of lithium-ion batteries Apparatus for baking, it is characterised in that it includes inert gas storage tank, preheating pipe, baking mechanism, and the storage tank passes through preheating Pipeline is connected with baking mechanism, its axis direction is provided with duct type gas heater on the preheating pipe;It is described lazy Property gas storage tanks output inert gas through duct type gas heater heating after, by preheating pipe input baking mechanism in Complete to carry out vacuum bakeout to electrodes of lithium-ion batteries.
Preferably, the tube wall of the preheating pipe includes insulating layer, thermal insulation layer successively outwardly from inner.
Preferably, the material of the insulating layer is the thermal insulation material of thermal conductivity factor > 40W/mK.
Preferably, the material of the thermal insulation layer is the heat-barrier material of thermal conductivity factor < 0.2W/mK.
Preferably, length >=1m of the preheating pipe.
Preferably, internal diameter≤0.02m of the preheating pipe.
Preferably, the inert gas storage tank is nitrogen storing tank or helium storage tank.
Preferably, the baking mechanism is high-temperature vacuum oven.
Compared with prior art, when the utility model is used, the inert gas of inert gas storage tank output is through duct type After gas heater heating, inputted by preheating pipe in baking mechanism and complete to carry out vacuum bakeout to electrodes of lithium-ion batteries; Vacuum bakeout is carried out to electrodes of lithium-ion batteries using the utility model device, avoids pole piece is obvious since uneven heating produces from becoming Shape, improves tension force uneven phenomenon during pole piece coiling, effectively raises product qualification rate.
Brief description of the drawings
Fig. 1 is a kind of overall structure diagram of the apparatus for baking of electrodes of lithium-ion batteries of the utility model;
Fig. 2 is the structural representation of the preheating pipe tube wall in a kind of apparatus for baking of electrodes of lithium-ion batteries of the utility model Figure.
Embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, is further elaborated the utility model.It should be appreciated that specific embodiment described herein is only explaining The utility model, is not used to limit the utility model.
A kind of apparatus for baking of electrodes of lithium-ion batteries provided by the utility model, as depicted in figs. 1 and 2, it includes lazy Property gas storage tanks 1, preheating pipe 2, baking mechanism 3, storage tank 1 by preheating pipe 2 with baking mechanism 3 be connected, preheating Its axis direction is provided with duct type gas heater 4 on pipeline 2;In use, the indifferent gas that inert gas storage tank 1 exports Body is inputted in baking mechanism 3 by preheating pipe 2 and completed to electrodes of lithium-ion batteries after the heating of duct type gas heater 4 Vacuum bakeout is carried out, so can improve tension force during pole piece coiling to avoid pole piece obvious deformation since uneven heating produces Uneven phenomenon, effectively raises product qualification rate.
Further, inert gas storage tank 1 is nitrogen storing tank or helium storage tank, and baking mechanism 3 is high-temperature vacuum Oven.
Further, the material of insulating layer 21 is the thermal insulation material of thermal conductivity factor > 40W/mK, is preferably polyurethane material Material;The material of thermal insulation layer 22 be thermal conductivity factor < 0.2W/mK heat-barrier material, be preferably glass fiber material, asbestos material, One or more in rock wool material;Using such thermal insulation material and heat-barrier material, in order to which nitrogen is quickly heated and saved Energy.
Further, heat resisting temperature >=120 DEG C of preheating pipe, prevent that pipeline is excessive and impaired because of oven temperature.
Further, length >=1m of preheating pipe 2, internal diameter≤0.02m of preheating pipe 2, in order to control indifferent gas Body (nitrogen or helium) flow velocity, makes inert gas (nitrogen or helium) fully be preheated.
Wherein, the length of preheating pipe can be according to specific demand (such as when being toasted to different material, to required lazy Property gas input baking mechanism traffic requirement it is very stringent, and the flow of the input of inert gas and the specification of preheating pipe are closed Can divide) it is fabricated to the preheating pipe of the different lengths such as 1m, 1.5m, 2m, 2.5m, 3m, 3.5m, 4m.
The use principle of the utility model is, using duct type gas heater 4 to inert gas (nitrogen in baking process Gas or helium) preheated, reduce the temperature difference of inert gas (nitrogen or helium) and environment in baking oven, so as to reduce indifferent gas Body (nitrogen or helium) avoids pole piece obvious deformation since uneven heating produces, improves to the extent of the destruction of oven temperature field Tension force uneven phenomenon during pole piece coiling, effectively raises product qualification rate.
The application method of the utility model is:1) output valve of inert gas storage tank 1 is opened, flows into inert gas Heated in duct type gas heater 4;2) when the temperature of inert gas (toasts mechanism 3 with the temperature in baking mechanism 3 Internal temperature) when comparing≤20 DEG C, the inert gas heated is delivered in baking mechanism 3 by preheating pipe 2, is made whole Baking mechanism 3 is in vacuum state;3) start to toast battery pole piece, until after the completion of pole piece baking, close inert gas storage The output valve of tank 1, while duct type gas heater 4 also stops heating, treats that temperature is down to room temperature, opens high-temperature vacuum and bakes Case, takes out electrodes of lithium-ion batteries.
Compared with prior art, when the utility model is used, the inert gas that inert gas storage tank 1 exports is through duct type After gas heater 4 heats, inputted by preheating pipe in baking mechanism 3 and complete to carry out vacuum baking to electrodes of lithium-ion batteries It is roasting;Vacuum bakeout is carried out to electrodes of lithium-ion batteries using the utility model device, avoids pole piece bright since uneven heating produces Aobvious deformation, improves tension force uneven phenomenon during pole piece coiling, effectively raises product qualification rate.
The above, is only the preferred embodiment of the utility model, is not intended to limit the protection of the utility model Scope.

Claims (8)

  1. A kind of 1. apparatus for baking of electrodes of lithium-ion batteries, it is characterised in that it include inert gas storage tank, preheating pipe, Mechanism is toasted, the storage tank is connected with baking mechanism by preheating pipe, is set on the preheating pipe along its axis direction It is equipped with duct type gas heater;The inert gas of the inert gas storage tank output is heated through duct type gas heater Afterwards, inputted by preheating pipe in baking mechanism and complete to carry out vacuum bakeout to electrodes of lithium-ion batteries.
  2. A kind of 2. apparatus for baking of electrodes of lithium-ion batteries according to claim 1, it is characterised in that the preheating pipe Tube wall from it is inner outwardly successively include insulating layer, thermal insulation layer.
  3. 3. the apparatus for baking of a kind of electrodes of lithium-ion batteries according to claim 2, it is characterised in that the insulating layer Material is the thermal insulation material of thermal conductivity factor > 40W/mK.
  4. 4. the apparatus for baking of a kind of electrodes of lithium-ion batteries according to claim 3, it is characterised in that the thermal insulation layer Material is the heat-barrier material of thermal conductivity factor < 0.2W/mK.
  5. A kind of 5. apparatus for baking of electrodes of lithium-ion batteries according to claim 4, it is characterised in that the preheating pipe Length >=1m.
  6. A kind of 6. apparatus for baking of electrodes of lithium-ion batteries according to claim 5, it is characterised in that the preheating pipe Internal diameter≤0.02m.
  7. A kind of 7. apparatus for baking of electrodes of lithium-ion batteries according to claim 6, it is characterised in that the inert gas Storage tank is nitrogen storing tank or helium storage tank.
  8. A kind of 8. apparatus for baking of electrodes of lithium-ion batteries according to claim 1-7 any one, it is characterised in that institute It is high-temperature vacuum oven to state baking mechanism.
CN201721172107.XU 2017-09-13 2017-09-13 A kind of apparatus for baking of electrodes of lithium-ion batteries Active CN207317486U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721172107.XU CN207317486U (en) 2017-09-13 2017-09-13 A kind of apparatus for baking of electrodes of lithium-ion batteries

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721172107.XU CN207317486U (en) 2017-09-13 2017-09-13 A kind of apparatus for baking of electrodes of lithium-ion batteries

Publications (1)

Publication Number Publication Date
CN207317486U true CN207317486U (en) 2018-05-04

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109346674A (en) * 2018-09-19 2019-02-15 惠州亿纬锂能股份有限公司 A kind of battery pole piece baking method
CN111486664A (en) * 2020-04-23 2020-08-04 华鼎国联四川动力电池有限公司 Baking curve construction method and baking method of lithium ion battery pole piece
WO2023083106A1 (en) * 2021-11-13 2023-05-19 宁德时代新能源科技股份有限公司 Battery cell baking device and control system thereof, and battery cell baking process

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109346674A (en) * 2018-09-19 2019-02-15 惠州亿纬锂能股份有限公司 A kind of battery pole piece baking method
CN111486664A (en) * 2020-04-23 2020-08-04 华鼎国联四川动力电池有限公司 Baking curve construction method and baking method of lithium ion battery pole piece
CN111486664B (en) * 2020-04-23 2021-11-09 华鼎国联四川动力电池有限公司 Baking curve construction method and baking method of lithium ion battery pole piece
WO2023083106A1 (en) * 2021-11-13 2023-05-19 宁德时代新能源科技股份有限公司 Battery cell baking device and control system thereof, and battery cell baking process

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GR01 Patent grant
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CP01 Change in the name or title of a patent holder

Address after: 056000 dongchangyuan village, Wu'an city, Handan City, Hebei Province

Patentee after: Hebei Gree titanium new energy Co.,Ltd.

Patentee after: Gree titanium new energy Co.,Ltd.

Address before: 056000 dongchangyuan village, Wu'an city, Handan City, Hebei Province

Patentee before: HEBEI YINLONG NEW ENERGY Co.,Ltd.

Patentee before: YINLONG ENERGY Co.,Ltd.

CP01 Change in the name or title of a patent holder