CN215176542U - Lithium ion battery cell toasts drying device - Google Patents
Lithium ion battery cell toasts drying device Download PDFInfo
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- CN215176542U CN215176542U CN202120859203.1U CN202120859203U CN215176542U CN 215176542 U CN215176542 U CN 215176542U CN 202120859203 U CN202120859203 U CN 202120859203U CN 215176542 U CN215176542 U CN 215176542U
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- battery cell
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- box body
- drying device
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model discloses a lithium ion battery cell baking and drying device, which comprises a vacuumized box body, wherein a battery cell is arranged in the box body, a heating plate for heating the battery cell is arranged in the box body, one side of the box body is provided with an air inlet for filling inert gas into the box body, and the other side of the box body is provided with an air outlet for discharging gas in the box body; this toast drying device has realized that the electricity core can carry out evacuation, heating, the setting of filling into inert gas simultaneously in the box, and the moisture evaporation is synchronous with the process of taking away in this kind of toasting mode, therefore production efficiency is high, the energy consumption is low, toasts the cycle shorter. So that the moisture difference of the baked battery cell is small and the consistency of the battery cell is high.
Description
Technical Field
The utility model relates to a lithium cell preparation technical field especially relates to a lithium ion battery cell toasts drying device.
Background
The lithium ion battery is the most advanced commercial secondary battery in the world at present, and with the development of various electronic products, the demand of the lithium ion battery is rapidly increased, and higher requirements are provided for the performance and the production efficiency of lithium battery production equipment.
Moisture has a crucial influence on the performance of lithium ion batteries. Moisture is a key factor which needs to be strictly controlled in the production process of the lithium ion battery, and when the moisture is excessive, lithium salt in the electrolyte can be decomposed, and a certain corrosion damage effect can be exerted on a positive electrode material and a negative electrode material and a current collector, and the cycle performance and the safety performance of the battery can be reduced.
The method is characterized in that the battery core is baked to remove moisture in the battery core before liquid injection in production, the requirement is extremely strict, at present, a vacuum oven is generally adopted for baking, the main flow of a baking mode is generally to take away the moisture through vacuumizing, heating and filling nitrogen, and the process is circulated for more than 10 times. It can be seen that the moisture evaporation and removal process is intermittent in this baking mode, so that the production efficiency is low, the energy consumption is high, and the baking time is generally long. In addition, the initial moisture of the battery cells in different batches in different seasons is often different and even greatly different, so that the moisture difference of the baked battery cells is large, and the consistency of the battery cells is poor.
SUMMERY OF THE UTILITY MODEL
Based on the technical problem that the background art exists, the utility model provides a lithium ion battery cell toasts drying device, production efficiency is high, the energy consumption is low, toasts the cycle shorter.
The utility model provides a lithium ion battery cell toasts drying device, including the box of evacuation, electric core sets up in the box, is provided with the hot plate that is used for heating electric core in the box, and one side of box is offered and is arranged in offering the gas outlet that is used for gas outgoing in the box to air inlet, the opposite side that fills inert gas in the box.
Furthermore, the box body is also provided with a partition board, the partition boards are evenly arranged, the battery cores are arranged on the partition boards, and the battery cores on the same partition board are arranged at certain intervals.
Further, the heating plates are respectively arranged at two ends of the partition plate in the extension direction.
Further, a fan is further arranged in the box body and fixedly arranged at the top of the box body.
Furthermore, an electromagnetic valve for controlling the flow of the inert gas filled in the box body and a flow meter for detecting the flow of the inert gas filled in the box body are arranged at the air inlet.
Further, a temperature sensor for detecting the temperature in the box body is also arranged in the box body.
Further, a humidity sensor for detecting that the inert gas leaves the box body is arranged at the gas outlet.
The utility model provides a pair of lithium ion battery cell toasts drying device's advantage lies in: the utility model discloses a lithium ion battery cell toasts drying device that provides in the structure heats through the hot plate in the box to let in inert gas, to the box evacuation simultaneously, realized that electric core can carry out evacuation, heating simultaneously in the box, fill into inert gas's setting, the moisture evaporation is synchronous with the process of taking away in this kind of mode of toasting, consequently production efficiency is high, the energy consumption is low, toasts the cycle shorter. So that the moisture difference of the baked battery cell is small and the consistency of the battery cell is high.
Drawings
Fig. 1 is a schematic structural view of the present invention;
the device comprises a box body 1, a heating plate 2, an air inlet 3, an air outlet 4, a partition plate 5, a battery core 6, a fan 7, an electromagnetic valve 8, a temperature sensor 9 and a humidity sensor 10.
Detailed Description
The technical solutions of the present invention are explained in detail below with reference to specific embodiments, and many specific details are set forth in the following description to provide a thorough understanding of the present invention. The present invention can be embodied in many other forms than those specifically described herein, and it will be apparent to those skilled in the art that similar modifications can be made without departing from the spirit and scope of the invention.
As shown in fig. 1, the utility model provides a lithium ion battery cell toasts drying device, including the box 1 of evacuation, electric core 6 sets up in box 1, is provided with the hot plate 2 that is used for heating electric core 6 in the box 1, and one side of box 1 is offered and is used for filling air inlet (3) into inert gas in the box 1, the opposite side is offered and is used for gas outgoing's gas outlet 4 in the box 1.
Heating through hot plate 2 in the box 1 to let in inert gas, to box 1 evacuation simultaneously, realize that electric core 6 can carry out evacuation, heating simultaneously in box 1, fill inert gas's setting, the moisture evaporation is synchronous with the process of taking away in this kind of mode of toasting, consequently production efficiency is high, the energy consumption is low, toasts the cycle shorter. So that the moisture difference of the baked battery cell is small and the consistency of the battery cell is high.
In this embodiment, one to a plurality of partition plates 5 may be disposed in the box 1 to implement baking of batches of the electric cores 6, the partition plates 5 are disposed at intervals, the electric cores 6 disposed on each partition plate 5 are disposed at intervals, and meanwhile, the electric cores on each layer of the partition plates 5 are also disposed at intervals to facilitate circulation of the inert gas, meanwhile, in order to improve uniformity of mixing and temperature uniformity of the inert gas at various places in the box 1, a fan 7 is further disposed in the box 1, the fan 7 is fixedly disposed at the top of the box 1, and the inert gas entering the box 1 is mixed under the action of the fan 7, so that the temperature at various places in the box 1 is substantially equal, and the temperature in the box 1 can be obtained through the temperature sensor 9 to control the rotation speed of the fan 7, so that a stable box environment is obtained, and the baking quality of the electric cores 6 is improved.
It should be noted that, in order to heat and bake the battery cell 6 model better, the heating plates 2 are respectively disposed at two ends of the partition board 5 in the extending direction; in order to acquire the humidity of the battery cell 6, a humidity sensor 10 for detecting that the inert gas leaves the box body 1 can be arranged at the gas outlet 4, the water content of the battery cell 1 in the box body 1 can be judged according to the humidity data detected by the humidity sensor 10, the baking time can be shortened, the baking efficiency is improved, the baking consistency is improved, and meanwhile, the baking device is simple and feasible and is suitable for industrial production.
In the embodiment, in order to control the flow rate of the inert gas entering the box body 1, the gas inlet 3 is provided with an electromagnetic valve 8 for controlling the flow rate of the inert gas filled into the box body 1 and a flow meter for detecting the flow rate of the inert gas filled into the box body 1, and the flow rate detected by the flow meter can be used as the basis for switching on and off the electromagnetic valve 8 so as to control the flow rate of the inert gas in the box body 1.
The working process is as follows: the inert gas is illustrated by taking nitrogen as an example, but not limited to nitrogen, the water content of the battery cell pole piece before baking is 600-1000PPM, the battery cell 6 is placed in the box body 1, the box body 1 is vacuumized to 150-300Pa, meanwhile, the heating plate 2 is used for heating, so that the temperature in the box body 1 is within the range of 80 +/-5 ℃, then the nitrogen is introduced into the box body 1 through the air inlet 3, the nitrogen flow is 20-50L/min, the nitrogen moves downwards under the action of the fan 7 to be mixed with the nitrogen in the original box body 1, finally, the nitrogen leaves the box body 1 from the air outlet 4, and when the humidity sensor detects that the relative humidity of the nitrogen outlet reaches 10-20%, and the water content of the battery cell pole piece in the corresponding box body 1 reaches less than 500PPM, the baking is finished.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (7)
1. The utility model provides a lithium ion battery cell toasts drying device, its characterized in that, including box (1) of evacuation, electric core (6) set up in box (1), are provided with in box (1) and are used for carrying out hot plate (2) that heat to electric core (6), and air inlet (3) that are used for filling inert gas in box (1), gas outlet (4) that are used for gas outgoing in box (1) are seted up to one side of box (1).
2. The baking and drying device for the lithium ion battery cell according to claim 1, wherein a partition board (5) is further arranged in the box body (1), the partition boards (5) are uniformly arranged, the battery cells (6) are arranged on the partition boards (5), and the battery cells (6) on the same partition board (5) are arranged at certain intervals.
3. The lithium ion battery cell baking and drying device according to claim 2, wherein the heating plates (2) are respectively disposed at both ends of the separator (5) in the direction of elongation.
4. The lithium ion battery cell baking and drying device according to claim 1, wherein a fan (7) is further arranged in the box body (1), and the fan (7) is fixedly arranged at the top of the box body (1).
5. The lithium ion battery cell baking and drying device according to claim 1, wherein an electromagnetic valve (8) for controlling the flow of the inert gas filled in the box body (1) and a flow meter for detecting the flow of the inert gas filled in the box body (1) are arranged at the air inlet (3).
6. The baking and drying device for the lithium ion battery cell according to any one of claims 1 to 5, wherein a temperature sensor (9) for detecting the temperature in the box (1) is further arranged in the box (1).
7. The lithium ion battery cell baking and drying device according to any one of claims 1 to 5, wherein a humidity sensor (10) for detecting the inert gas leaving the box body (1) is arranged at the gas outlet (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120859203.1U CN215176542U (en) | 2021-04-23 | 2021-04-23 | Lithium ion battery cell toasts drying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120859203.1U CN215176542U (en) | 2021-04-23 | 2021-04-23 | Lithium ion battery cell toasts drying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215176542U true CN215176542U (en) | 2021-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120859203.1U Active CN215176542U (en) | 2021-04-23 | 2021-04-23 | Lithium ion battery cell toasts drying device |
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| CN (1) | CN215176542U (en) |
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2021
- 2021-04-23 CN CN202120859203.1U patent/CN215176542U/en active Active
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