CN112436193A - Battery cell aging equipment and aging control method - Google Patents
Battery cell aging equipment and aging control method Download PDFInfo
- Publication number
- CN112436193A CN112436193A CN202011374073.9A CN202011374073A CN112436193A CN 112436193 A CN112436193 A CN 112436193A CN 202011374073 A CN202011374073 A CN 202011374073A CN 112436193 A CN112436193 A CN 112436193A
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- Prior art keywords
- cell
- capsule
- bearing part
- battery cell
- rotating base
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0404—Machines for assembling 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
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a battery cell aging device and an aging control method, wherein the device comprises a rotating base body and a battery cell placing box, wherein the battery cell placing box is arranged at a non-rotating center position on the rotating base body; the electric core carrier comprises an electric core body bearing part and a capsule body bearing part which are respectively used for bearing an electric core body and a capsule body of an aged electric core; the battery cell body bearing part is fixedly arranged in the battery cell placing box, and the battery cell placing box is arranged on the rotating base body in a mode that the capsule body bearing part faces the inner side of the rotating base body; the cell carrier further comprises a capsule driving mechanism for driving the capsule bearing part to flatten or fold back at a certain angle relative to the cell body bearing part. The invention can reduce the aging time of the battery core, shorten the manufacturing period of the battery core, improve the production efficiency, improve the efficiency of the pole piece for absorbing electrolyte, reduce the electrolyte injection amount of the battery core and reduce the production cost.
Description
Technical Field
The invention belongs to the technical field of lithium ion battery manufacturing, and particularly relates to equipment for battery cell aging after lithium ion battery cell liquid injection and a corresponding aging control method.
Background
The aging is an important process after the battery core is injected with liquid, namely, the battery core is injected with liquid, so that the pole piece and the diaphragm are fully soaked by electrolyte, and the use performance of the battery core can be directly determined by the quality of the aging effect. At present, most battery manufacturers adopt an aging mode that the battery core is kept still for dozens of hours at a certain temperature, so that the electrolyte in the battery core slowly infiltrates the pole piece of the battery core, although the basic purpose of battery core aging can be achieved, the core can be fully infiltrated by the electrolyte, the longer aging time reduces the production efficiency, prolongs the production period of the battery, and improves the cost of the whole production process.
Disclosure of Invention
The invention aims to provide a set of equipment which can quickly and efficiently finish the aging of a battery cell in a short time.
In order to achieve the purpose, the invention adopts the following technical scheme:
a battery cell aging device comprises a rotating base body and a battery cell placing box, wherein the battery cell placing box is arranged at a non-rotating center position on the rotating base body; the electric core carrier is characterized by also comprising an electric core carrier, wherein the electric core carrier comprises an electric core body bearing part and a capsule body bearing part which are respectively used for bearing an electric core body and a capsule body of an aged electric core; the battery cell body bearing part is fixedly arranged in the battery cell placing box, and the battery cell placing box is arranged on the rotating base body in a mode that the capsule body bearing part faces the inner side of the rotating base body; the cell carrier further comprises a capsule driving mechanism for driving the capsule bearing part to flatten or fold back at a certain angle relative to the cell body bearing part.
As a specific technical scheme, the battery cell aging device further comprises a battery cell rotation driving mechanism, and on the premise that the capsule bearing part faces the inner side of the rotating base body, the battery cell rotation driving mechanism drives the battery cell placing box to rotate in a certain range relative to the rotating base body.
As a specific technical scheme, the battery cell aging device further comprises a battery cell clamping mechanism, wherein the battery cell clamping mechanism comprises a battery cell body clamping piece for applying an acting force applied to the battery cell body and applied to the battery cell body bearing part, and an utricule clamping piece for applying an acting force applied to the utricule bearing part and applied to the utricule.
As a specific technical scheme, the capsule bearing part is connected to one side of the battery cell body bearing part through a rotating shaft.
As a specific technical scheme, the capsule driving mechanism is a motor and a gear assembly which are arranged in the cell body bearing part or the capsule bearing part and are in driving fit with the rotating shaft.
As a specific technical scheme, the capsule driving mechanism is an ejector rod structure which is arranged in the battery cell placing box and can be used for jacking upwards or pulling back the capsule bearing part downwards.
The rotating base body is a rotating disc structure, a hub-shaped structure, a supporting plate or a windmill-shaped structure formed by a plurality of supporting plates in a concentric rotation mode.
As a specific technical scheme, the number of the battery cell placing boxes is more than two, and the battery cell placing boxes are arranged on the same circumference or different circumferences away from the rotating center on the rotating base body.
As a specific technical scheme, a containing groove suitable for the battery cell body is formed in the battery cell body bearing part.
A battery cell aging control method is based on the battery cell aging equipment, and is characterized by comprising the following steps:
(1) respectively bearing a cell body and a capsule body of an aged cell on the cell body bearing part and the capsule body bearing part;
(2) adjusting the initial orientation of the cell placement box so that the capsule is generally facing the inside of the rotating base;
(3) controlling the rotating matrix to rotate for a preset time; wherein: controlling the capsule bearing part to rotate to enable the capsule to form an included angle of 135-90 degrees with the battery cell body bearing part; and controlling the electric core placing box to periodically rotate on the premise that the capsule bearing part faces the inner side of the rotating base body.
According to the equipment or the method provided by the invention, during aging operation, the rotating matrix can rotate at a higher rotating speed so as to provide centrifugal force for electrolyte in a product and enable the electrolyte to move in a direction away from the rotating core, while the rotating matrix rotates at a certain rotating speed, the cell carrier disc can rotate at a lower rotating speed or at a non-uniform speed, the orientation of the cell is changed periodically within a certain range so as to control the flow direction of the electrolyte in the cell, so that the electrolyte in the cell can directionally flow in the cell under the action of the large disc and the small disc so as to fully infiltrate the pole pieces; more importantly, the capsule bearing part is controlled to rotate, so that the capsule and the battery cell body bearing part are at 135-90 degrees of included angle, and the electrolyte can be effectively prevented from flowing back to the capsule. In general, the invention can reduce the aging time of the battery cell, shorten the manufacturing period of the battery cell, improve the production efficiency, improve the efficiency of absorbing electrolyte by the pole piece, reduce the electrolyte injection amount of the battery cell and reduce the production cost.
Drawings
Fig. 1 is a schematic diagram of a cell aging apparatus provided in an embodiment of the present invention.
Fig. 2 is a schematic diagram of the cell structure before aging.
Fig. 3 is a schematic diagram of an assembled cell placement box and cell carrier in the cell aging apparatus according to the embodiment of the present invention.
Fig. 4 is a schematic diagram of a cell carrier in the cell aging apparatus according to an embodiment of the present invention.
Detailed Description
The following further describes embodiments of the present invention in conjunction with the drawings, and for purposes of explanation, the present application is intended to define the upper, lower, left, right, etc. aspects, which are merely set forth for clarity of the description of the device construction and are not intended to limit the actual orientation of the device during manufacture, use, sale, etc. The following further describes embodiments of the present invention with reference to the accompanying drawings:
as shown in fig. 1, the cell aging apparatus provided in this embodiment includes a rotating base 10, a cell placing box 20, a cell carrier 30, and a cell clamping mechanism 40. The rotating base 10 is a turntable, and is controlled by a cell revolution driving mechanism (e.g., a motor, etc., not shown) to rotate at a constant speed or a variable speed, so as to drive the cell placing box 20 disposed thereon and the cells 50 in the box to revolve around the rotation center of the rotating base 10. It will be understood that the rotating base 10 need not be a disk, but may be a hub-like structure, a support plate, or a windmill-like structure formed by a plurality of support plates concentrically arranged.
The cell placing box 20 is disposed on the rotating base 10 at a position other than the center of rotation, preferably at an edge away from the center of rotation. A plurality of cell placing boxes 20 may be respectively disposed on the same circumference or different circumferences of the rotating base body 10. The cell placing box 20 is configured to rotate relative to the rotating base 10, that is, the bottom of the cell placing box 20 is connected to the rotating base 10 through a rotating shaft. In this embodiment, a cell rotation driving mechanism (for example, a motor, etc., not shown) is provided to drive the cell storing box 20 to rotate relative to the rotating base 10, so that the active control of the rotation mode of the cell storing box 20 is more easily implemented.
As shown in fig. 2, the battery cell 50 includes a cell body 51 and a capsule 52 located on one side of the cell body 51, and the capsule 52 initially stores therein an electrolyte to be infused into the cell body 51. As shown in fig. 3 and fig. 4, the cell storing box 20 has an opening and a containing cavity, the cell carrier 30 includes a cell body bearing portion 31 and a capsule body bearing portion 32, a containing groove 311 adapted to the cell body 51 is provided on the cell body bearing portion 31, the cell body bearing portion 31 is fixedly disposed in the containing cavity of the cell storing box 20, the capsule body bearing portion 32 is connected to one side of the cell body bearing portion 31 through a rotating shaft 33, so that the capsule body bearing portion 32 can be leveled or folded back by a certain angle relative to the cell body bearing portion 31. The battery cell carrier 30 further includes a capsule driving mechanism for driving the capsule carrying portion 32 to rotate relative to the battery cell body carrying portion 31, and the capsule driving mechanism may be a motor and a gear assembly disposed in the battery cell body carrying portion 31 or the capsule carrying portion 32, or an ejector rod structure disposed in the battery cell storage box 20 and capable of ejecting upward or pulling back the capsule carrying portion 32 downward.
As shown in fig. 3, the cell clamping mechanism 40 includes a cell body clamping element 41 and a capsule clamping element 42, which are respectively assembled on the cell body bearing portion 31 and the capsule bearing portion 32, the cell body clamping element 41 is configured to apply an acting force, which is attached to the cell body bearing portion 31, to the cell body 51, and the capsule clamping element 42 is configured to apply an acting force, which is attached to the capsule bearing portion 32, to the capsule 52.
Based on the above battery cell aging equipment, the working process and the control method are as follows:
(1) placing the battery cell 50 on the battery cell carrier 30 in the battery cell placing box 20, clamping the battery cell body 51 on the battery cell body bearing part 31 by using the battery cell body clamping part 41, and clamping the capsule 52 on the capsule bearing part 32 by using the capsule clamping part 42;
(2) adjusting the initial orientation of the cell placement box 20 such that the bladder 52 is generally rotationally centered toward the rotational base 10;
(3) controlling the rotating matrix 10 to rotate at a larger speed for a predetermined time, even if the electrolyte in the capsule 52 flows away from the rotation center of the rotating matrix 10 under the action of centrifugal force, and flows into the cell body 51 (so that the electrolyte can better infiltrate the winding core in the cell body 51);
before or during the rotation of the rotating matrix 10, the capsule bearing part 32 is controlled to rotate to enable the capsule to form an included angle of 135-90 degrees with the battery cell body bearing part 31, so that the electrolyte is prevented from flowing back to the capsule 52;
in the rotating process of the rotating base body 10 (i.e. when the rotating base body 10 provides centrifugal force), the cell placing box 20 is controlled to periodically rotate so as to control the flow direction of the electrolyte in the cell body 51, so that the electrolyte can fully contact with the winding core and infiltrate the winding core, and the aging time is reduced.
The above embodiments are merely provided for full disclosure and not for limitation, and any replacement of equivalent technical features based on the gist of the present invention without creative efforts should be considered as the scope of the present disclosure.
Claims (10)
1. A battery cell aging device comprises a rotating base body and a battery cell placing box, wherein the battery cell placing box is arranged at a non-rotating center position on the rotating base body; the electric core carrier is characterized by also comprising an electric core carrier, wherein the electric core carrier comprises an electric core body bearing part and a capsule body bearing part which are respectively used for bearing an electric core body and a capsule body of an aged electric core; the battery cell body bearing part is fixedly arranged in the battery cell placing box, and the battery cell placing box is arranged on the rotating base body in a mode that the capsule body bearing part faces the inner side of the rotating base body; the cell carrier further comprises a capsule driving mechanism for driving the capsule bearing part to flatten or fold back at a certain angle relative to the cell body bearing part.
2. The cell aging apparatus of claim 1, further comprising a cell rotation driving mechanism, wherein the cell rotation driving mechanism drives the cell placement box to rotate within a certain range relative to the rotating base on the premise that the capsule bearing portion faces the inner side of the rotating base.
3. The cell aging apparatus of claim 1 or 2, further comprising a cell clamping mechanism, wherein the cell clamping mechanism comprises a cell body clamping member that applies an acting force to the cell body that is attached to the cell body bearing portion and a capsule clamping member that applies an acting force to the capsule that is attached to the capsule bearing portion.
4. The cell aging apparatus of claim 1, wherein the capsule carrying portion is connected to one side of the cell body carrying portion through a rotating shaft.
5. The cell aging apparatus of claim 1, wherein the capsule driving mechanism is a motor and gear assembly disposed in the cell body bearing portion or the capsule bearing portion and drivingly engaged with the shaft.
6. The cell aging apparatus of claim 1, wherein the capsule driving mechanism is a push rod structure disposed in the cell storage box and capable of pushing up or pulling back the capsule carrying portion.
7. The cell aging apparatus of claim 1, wherein the rotating base is a rotating disc structure, a hub-like structure, a supporting plate, or a windmill-like structure formed by a plurality of supporting plates rotating together.
8. The cell conditioning apparatus of claim 1, wherein the number of the cell accommodating boxes is two or more, and the two or more cell accommodating boxes are arranged on the same circumference or different circumferences of the rotating base body away from the rotation center.
9. The cell aging apparatus of claim 1, wherein the cell body carrying portion is provided with a receiving groove adapted to the cell body.
10. A cell aging control method based on the cell aging apparatus of claim 2, the control method comprising:
(1) respectively bearing a cell body and a capsule body of an aged cell on the cell body bearing part and the capsule body bearing part;
(2) adjusting the initial orientation of the cell placement box so that the capsule is generally facing the inside of the rotating base;
(3) controlling the rotating matrix to rotate for a preset time; wherein: controlling the capsule bearing part to rotate to enable the capsule to form an included angle of 135-90 degrees with the battery cell body bearing part; and controlling the electric core placing box to periodically rotate on the premise that the capsule bearing part faces the inner side of the rotating base body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011374073.9A CN112436193B (en) | 2020-11-30 | 2020-11-30 | Battery cell aging equipment and aging control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011374073.9A CN112436193B (en) | 2020-11-30 | 2020-11-30 | Battery cell aging equipment and aging control method |
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| CN112436193A true CN112436193A (en) | 2021-03-02 |
| CN112436193B CN112436193B (en) | 2022-04-12 |
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| CN202011374073.9A Active CN112436193B (en) | 2020-11-30 | 2020-11-30 | Battery cell aging equipment and aging control method |
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| CN210897468U (en) * | 2019-11-19 | 2020-06-30 | 苏州凌威新能源科技有限公司 | Electricity core priming device |
| CN111540957A (en) * | 2020-05-09 | 2020-08-14 | 珠海冠宇电池股份有限公司 | Method and device for infiltrating battery cell with electrolyte |
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| CN112436193B (en) | 2022-04-12 |
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