CN111540957A - Method and device for infiltrating battery cell with electrolyte - Google Patents
Method and device for infiltrating battery cell with electrolyte Download PDFInfo
- Publication number
- CN111540957A CN111540957A CN202010385352.9A CN202010385352A CN111540957A CN 111540957 A CN111540957 A CN 111540957A CN 202010385352 A CN202010385352 A CN 202010385352A CN 111540957 A CN111540957 A CN 111540957A
- Authority
- CN
- China
- Prior art keywords
- battery cell
- electrolyte
- tray
- rotating
- battery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
-
- 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
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion 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
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Filling, Topping-Up Batteries (AREA)
Abstract
The invention provides a method and a device for infiltrating a battery cell with electrolyte, relates to the technical field of batteries, and is used for increasing the contact frequency of the electrolyte in the battery cell and a pole piece, a diaphragm and the like in the battery cell, improving the infiltration effect and shortening the time period for fully infiltrating the battery cell with the electrolyte. The method for infiltrating the battery core with the electrolyte comprises the following steps: the fixed placing of electric core that has the electrolyte will pour into on rotatory tray, and electric core is rotatory along with rotatory tray, and electric core when rotatory, the electrolyte in the electric core can receive centrifugal force, and the size of the centrifugal force that electric core received is changeable. The electrolyte can increase the contact frequency of the electrolyte in the battery cell and pole pieces, diaphragms and the like in the battery cell under the action of different centrifugal forces, so that the infiltration effect is improved, and meanwhile, the time period for the electrolyte to fully infiltrate the battery cell can be shortened.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a method and a device for infiltrating a battery core with electrolyte.
Background
At present, lithium ion batteries have the advantages of high specific energy, many recycling times, long storage time and the like, and are widely applied to portable electronic devices such as mobile phones, digital video cameras, portable computers and the like, and also widely applied to large and medium-sized electric devices such as electric automobiles, electric bicycles, electric tools and the like, so that how to ensure the quality of the lithium ion batteries becomes a hot spot of current research.
One critical step that affects the quality of lithium ion batteries is the injection of electrolyte within the lithium ion battery. At present, after electrolyte is injected into a battery core, the battery core injected with the electrolyte is naturally kept still for more than 24-36 hours so as to meet the infiltration effect between the electrolyte and a pole piece and a diaphragm in the battery, and thus the quality and the performance of the battery are improved.
However, the battery soaks the battery core by the electrolyte in a natural standing mode, the time period is long, the contact frequency of the electrolyte with the inner layers of the pole piece and the diaphragm in the battery core is small, and the soaking effect is poor.
Disclosure of Invention
The invention provides a method and a device for infiltrating a battery cell with electrolyte, which are used for increasing the contact frequency of the electrolyte in the battery cell and a pole piece, a diaphragm and the like in the battery cell, improving the infiltration effect, shortening the time period for fully infiltrating the battery cell with the electrolyte and improving the infiltration efficiency.
In order to achieve the above object, in a first aspect, the present invention provides a method for infiltrating a battery cell with an electrolyte, including:
fixedly placing the battery cell injected with the electrolyte on a rotary tray;
the electric core rotates along with the rotating tray, and the centrifugal force applied to the electric core is variable.
As an alternative embodiment, the method for infiltrating the battery cell with the electrolyte provided by the present invention, wherein the battery cell rotates along with the rotating tray, and the step of subjecting the battery cell to a centrifugal force with a variable magnitude includes:
the rotation speeds of the battery cells are different in different time periods; or the distance between the cell and the rotation center of the rotation tray is different in different time periods.
As an optional implementation manner, in the method for infiltrating the battery cell with the electrolyte, provided by the invention, the rotating tray comprises n layers of trays which are coaxially arranged, wherein n is a positive integer; the step of enabling the cell to have different distances from the rotation center of the rotation tray in different time periods comprises the following steps:
fixedly placing the battery cell injected with the electrolyte on the tray of the ith layer, and stopping rotating the battery cell along with the tray of the ith layer for a first preset time, wherein i is a positive integer and is more than or equal to 1 and less than n;
transferring the battery cell placed on the tray of the ith layer to the tray of the (i + x) th layer, and stopping rotating the battery cell along with the tray of the (i + x) th layer for a second preset time, wherein i + x is a positive integer, and is more than 1 and less than or equal to n;
the rotating speed of the (i + x) th layer tray is the same as that of the (i) th layer tray; the distance from the battery cell to the axis when the battery cell is arranged on the (i + x) th layer tray is larger than the distance from the battery cell to the axis when the battery cell is arranged on the (i + x) th layer tray.
As an alternative embodiment, the method for infiltrating the battery cells with the electrolyte provided by the present invention, wherein the step of differentiating the distance from the battery cell to the rotation center of the rotation tray in different time periods comprises:
and sequentially transferring the battery cores injected with the electrolyte to n trays from the 1 st layer to the nth layer.
In a second aspect, the present invention provides an apparatus for infiltrating a battery cell with an electrolyte, comprising a motor and a rotating tray for placing the battery cell with the electrolyte injected therein;
the rotation axis of rotatory tray and the output shaft of motor, rotatory tray drives electric core rotatory when the drive of motor is down rotated, and the centrifugal force's that electric core received size is changeable.
As an optional implementation manner, in the apparatus for infiltrating the battery cell with the electrolyte, provided by the invention, the rotating tray includes n layers of trays arranged coaxially, wherein n is a positive integer;
when the battery cell is fixedly placed on the trays of different layers, the distance from the battery cell to the axis is different.
As an optional implementation manner, in the device for infiltrating the battery cells with the electrolyte provided by the invention, each tray is provided with a limiting groove, and the battery cells are placed in the limiting grooves.
As an optional implementation manner, in the apparatus for infiltrating the battery cells with the electrolyte provided by the present invention, the rotating tray is a conical main body, and multiple layers of accommodating spaces for accommodating the battery cells are sequentially arranged on the conical surface of the conical main body at intervals along a direction from the small end to the large end of the conical main body, and distances from the battery cells placed in the accommodating spaces of each layer to the central axis of the conical main body are sequentially increased.
As an optional implementation mode, the device for infiltrating the battery cell with the electrolyte provided by the invention further comprises a cartridge clip structure and a fixing piece for fixing the cartridge clip structure;
the cartridge clip structure comprises a base and four side walls which are sequentially connected end to end, the base and the four side walls enclose a containing space for containing the battery cell, the four side walls are arranged in pairs in an opposite mode, and the two opposite side walls can move relatively, so that the battery cell is clamped between the side walls;
the fixing piece fixes the cartridge clip structure containing the battery cell on the conical surface of the conical main body.
As an optional implementation manner, in the device for infiltrating the battery cell with the electrolyte, the fixing member includes a bearing portion and a limiting portion;
the bearing part is fixedly arranged on the conical surface of the conical main body, the cartridge clip structure is placed on the bearing part and abuts against the conical surface of the conical main body, and the bearing part is used for preventing the cartridge clip structure from sliding downwards along the conical surface of the conical main body;
the outer wall of the cartridge clip structure, which is attached to the bearing part, is provided with at least two bulges, the bearing part is provided with grooves matched with the bulges at the positions corresponding to the bulges, and the bulges are positioned in the grooves when the cartridge clip structure is placed on the bearing part;
one end sliding connection of spacing portion is on the bearing part, and spacing portion and the parallel arrangement of the top surface of cartridge clip structure, and the cartridge clip structure presss from both sides and establishes between the circular conical surface of spacing portion and circular conical main part.
According to the method and the device for infiltrating the battery cell with the electrolyte, the battery cell injected with the electrolyte is fixedly placed on the rotating tray, the rotating tray rotates around the axis of the rotating tray under the driving of the motor, the battery cell can be driven to rotate together when the rotating tray rotates, the electrolyte in the battery cell can be subjected to centrifugal force when the battery cell rotates, the centrifugal force applied to the battery cell is variable, and the contact frequency of the electrolyte in the battery cell and pole pieces, diaphragms and the like in the battery cell can be increased under the action of different centrifugal forces, so that the infiltration effect is improved; in addition, the time period for fully soaking the battery core by the electrolyte can be shortened, and the soaking efficiency is improved.
Drawings
Fig. 1 is a flowchart of a method for infiltrating a battery cell with an electrolyte according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a device for infiltrating a battery cell with an electrolyte according to a second embodiment of the present invention;
fig. 3 is a schematic structural view of a spring clip structure on a bearing portion in a device for immersing a battery cell with an electrolyte according to a second embodiment of the present invention;
fig. 4 is a schematic structural diagram of another apparatus for infiltrating a battery cell with an electrolyte according to a second embodiment of the present invention;
FIG. 5 is a cross-sectional view of the cartridge of FIG. 4;
FIG. 6 is a bottom view of the cartridge clip of FIG. 4;
fig. 7 is a schematic diagram of a cycle test when the cell temperature is 25 ℃ according to the second embodiment of the present invention.
Reference numerals:
10-rotating the tray; 20-electric core; 30-a cartridge clip structure;
301-a bump; 40-a fixing piece; 401-a carrier;
4011-grooves; 402-a limiting part; 50-a manipulator;
60-air bag.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
At present, lithium ion batteries have the advantages of high specific energy, many recycling times, long storage time and the like, and are widely applied to portable electronic devices such as mobile phones, digital video cameras, portable computers and the like, and also widely applied to large and medium-sized electric devices such as electric automobiles, electric bicycles, electric tools and the like, so that how to ensure the quality of the lithium ion batteries becomes a hot spot of current research.
One critical step that affects the quality of lithium ion batteries is the injection of electrolyte within the lithium ion battery. At present, after electrolyte is injected into a battery core, the battery core injected with the electrolyte is naturally kept still for more than 24-36 hours so as to meet the infiltration effect between the electrolyte and a pole piece and a diaphragm in the battery, and thus the quality and the performance of the battery are improved. However, the battery soaks the battery core by the electrolyte in a natural standing mode, the time period is long, the contact between the electrolyte and the inner layers of the pole piece and the diaphragm in the battery core is less, and the soaking effect is poor.
Therefore, the battery cell injected with the electrolyte is placed on the rotatable tray, so that the battery cell rotates along with the rotatable tray, when the battery cell rotates, the electrolyte in the battery cell can be subjected to centrifugal force, the centrifugal force is controlled by adjusting the rotation speed and the distance from the battery cell to the rotation center, the contact frequency of the electrolyte in the battery cell and pole pieces, diaphragms and the like in the battery cell can be increased to the greatest extent under the action of centrifugal forces with different sizes, a better soaking effect is achieved, and the time period for the electrolyte to fully soak the battery cell can be effectively shortened.
The method and apparatus for infiltrating the cell with electrolyte provided by the present application are described in detail below with specific embodiments.
Example one
Fig. 1 is a flowchart of a method for infiltrating a battery cell with an electrolyte according to an embodiment of the present invention. Referring to fig. 1, a method for infiltrating a battery cell with an electrolyte according to an embodiment of the present invention includes:
s101: fixedly placing the battery core 20 injected with the electrolyte on the rotary tray 10;
specifically, the tray can be the tray of cylindric, discoid isopyknic shape, is provided with the cavity that is used for holding electric core 20 on the tray, and electric core 20 places in the cavity, in order to prevent that electric core 20 from throwing away or the skew takes place for the position from the tray when rotatory along with rotatory tray 10, can make the shape size of the cavity of holding electric core 20 and the shape size phase-match of electric core 20. Therefore, the battery cell 20 injected with the electrolyte can be fixedly placed in the cavity, so that the battery cell 20 is fixed on the tray and cannot be thrown out or deviated along with the rotation of the tray.
S102: the cells 20 rotate with the rotating tray 10, and the magnitude of the centrifugal force to which the cells 20 are subjected is variable.
When the battery cell 20 rotates along with the rotating tray 10, the battery cell 20 is subjected to centrifugal force, and the electrolyte in the battery cell 20 can form a vortex-like field between a pole piece and a diaphragm in the battery cell 20, so that when the electrolyte soaks the battery cell 20, the electrolyte can be subjected to the gravity and the centrifugal force of the electrolyte, and the battery cell 20 is soaked by the resultant force formed by the gravity and the centrifugal force of the electrolyte, therefore, compared with the soaking method in which the electrolyte is naturally kept still and only soaked by the gravity of the electrolyte, the method provided by the embodiment of the invention has better soaking effect; moreover, under the action of the variable centrifugal force, the moving amount of the electrolyte moving between the pole piece and the diaphragm in the cavity of the battery cell 20 increases, and the moving times of the electrolyte increases, so that the contact times of the electrolyte with the pole piece and the diaphragm increases, the battery cell infiltrating effect of the electrolyte is improved, the time period for infiltrating the battery cell 20 with the electrolyte can be shortened, and the infiltrating efficiency is improved.
That is to say, the change of the centrifugal force can improve the wetting effect of the electrolyte wetting the battery cell 20, and the magnitude of the centrifugal force is related to the rotating speed and the distance from the battery cell 20 to the rotating center, so that when the rotating speed and the distance from the battery cell 20 to the rotating center are changed, the magnitude of the centrifugal force can be changed along with the rotating speed of the battery cell and the change of the distance from the battery cell to the rotating center, thereby improving the wetting effect of the electrolyte wetting the battery cell through the variable centrifugal force, shortening the wetting period, and improving the wetting efficiency.
In an alternative embodiment, the step of rotating the battery cell 20 with the rotating tray 10 and the step of subjecting the battery cell 20 to a variable centrifugal force includes: the rotational speed of the battery cell 20 varies in different time periods.
Specifically, when the cell 20 is located at a certain distance from the center of the rotating tray 10, the rotating speeds of the cell 20 may be different in different time periods to achieve different magnitudes of the centrifugal force of the cell 20, so as to improve the wetting effect, for example, when the rotating speed is n1, the rotating time is t1, when the rotating speed is n2, the rotating time is t2, and the like, where n1 is not equal to n2, and t1 is equal to t2, and may also be not equal.
In another alternative embodiment, the step of rotating the battery cell 20 with the rotating tray 10, and the step of subjecting the battery cell 20 to the centrifugal force being variable includes: the cells 20 are at different distances from the rotation center of the rotating tray 10 in different time periods.
That is, the centrifugal force is adjusted by adjusting the distance between the battery cell 20 and the rotation center of the rotation tray 10, so as to improve the wetting effect of the electrolyte on the battery cell 20.
In different time periods, the rotating speed of the battery cell 20 is different, and the distance from the battery cell 20 to the rotation center of the rotating tray 10 is changed, so that the centrifugal force of the battery cell 20 is adjusted by simultaneously controlling the rotating speed of the battery cell 20 and the distance from the battery cell 20 to the rotation center of the rotating tray 10, and the soaking effect of the electrolyte soaking the battery cell 20 is improved.
Further, the rotating tray 10 includes n layers of trays coaxially arranged, where n is a positive integer; fixedly placing the battery core 20 injected with the electrolyte on the tray of the ith layer, and stopping rotating after rotating along with the tray of the ith layer for a first preset time, wherein i is a positive integer and is more than or equal to 1 and less than n;
transferring the battery cell 20 placed on the ith layer of tray to the (i + x) th layer of tray, and stopping rotating after rotating for a second preset time along with the (i + x) th layer of tray, wherein i + x is a positive integer, and is more than 1 and less than or equal to n;
the rotating speed of the (i + x) th layer tray is the same as that of the (i) th layer tray; the distance from the cell 20 to the axis when the cell 20 is on the (i + x) th layer tray is greater than the distance from the cell 20 to the axis when the cell 20 is on the (i) th layer tray.
Specifically, the rotating tray 10 may be a rotating tray 10 formed by coaxially connecting a plurality of trays in the shape of a cylinder, a quadrangular prism, a triangular prism, etc. in series, wherein each layer of trays may be fixedly provided with a battery cell 20, wherein the distance from the battery cell 20 to the rotation axis on each layer of the rotating tray 10 is different, in this embodiment, when the rotation speed of the tray of the i + x layer is the same as the rotation speed of the tray of the i layer, and the distance from the battery cell 20 to the axis when the battery cell 20 is on the tray of the i + x layer is greater than the distance from the battery cell 20 to the axis when the battery cell 20 is on the tray of the i layer, the battery cell 20 is placed on the i layer, wherein the i layer may be the first layer or another layer except the last layer, when the battery cell 20 stops rotating for a predetermined time, the battery cell 20 of the i layer is placed on the tray of the i + x layer by the manipulator 50, and a new battery cell 20 injected with electrolyte can be placed on the i layer, like this, not only can be through placing electric core 20 on the tray of difference at different time quantums, so that the centrifugal force that electric core 20 received is of different size, electrolyte in the cavity of electric core 20 under the effect of centrifugal force of difference with the pole piece in electric core 20, form multilayer vortex between the diaphragm and soak, electrolyte and pole piece in the cavity of electric core 20, the diaphragm carries out the contact of many times different positions, thereby improve the infiltration effect that electric core 20 was soaked to electrolyte, can be quick accomplish the purpose that electric core 20 was soaked to electrolyte, shorten the infiltration cycle, and set up a plurality of electric cores 20 simultaneously and rotate on the tray of different layers, so that receive different centrifugal forces, can effectual promotion production efficiency, realize mechanical automation production.
In another embodiment, the rotating tray 10 may also be a cone structure such as a cone, a circular truncated cone, or a prism, and the conical surface of the cone structure may be provided with multiple layers of accommodating spaces or accommodating cavities, limiting grooves, etc. for accommodating the battery cell 20 from top to bottom, as long as the battery cell 20 can be fixedly placed on the conical surface of the cone structure, the battery cell 20 injected with the electrolyte is fixedly placed in each layer of accommodating space, accommodating cavity, or limiting groove on the conical surface of the cone structure, because the distance from the point on the conical surface of the conical body to the rotation center is gradually increased from top to bottom, the distances from the cell 20 on the conical surface of the conical body structure to the rotation axis are different, the centrifugal force of the cell 20 is different in different layers of the conical body structure, in different time periods, the battery cell 20 is placed in different layers of the cone structure, so as to improve the infiltration effect of the electrolyte infiltrating the battery cell 20.
Optionally, the battery cell 20 injected with the electrolyte may be sequentially placed on n trays from the 1 st layer to the nth layer, or the battery cell 20 injected with the electrolyte may be sequentially placed on n trays from the nth layer to the 1 st layer, as long as the centrifugal force applied to the battery cell 20 is gradually changed, so as to achieve the wetting effect of the electrolyte wetting the battery cell 20, and shorten the time period for the electrolyte wetting the battery cell 20.
According to the method for infiltrating the battery cell with the electrolyte, the battery cell injected with the electrolyte is fixedly placed on the rotating tray, the rotating tray rotates around the axis of the rotating tray under the driving of the motor, the rotating tray can drive the battery cell to rotate together when rotating, the electrolyte in the battery cell can be subjected to centrifugal force when the battery cell rotates, the centrifugal force applied to the battery cell is variable, and the contact frequency of the electrolyte in the battery cell and pole pieces, diaphragms and the like in the battery cell can be increased under the action of different centrifugal forces, so that the infiltration effect is improved; in addition, the time period for fully soaking the battery core by the electrolyte can be shortened, and the soaking efficiency is improved.
Example two
The second embodiment of the present invention provides a device for infiltrating an electric core with an electrolyte, including a motor and a rotating tray 10 for placing an electric core 20 injected with an electrolyte, where a rotating shaft of the rotating tray 10 is connected to an output shaft of the motor, the rotating tray 10 drives the electric core 20 to rotate when being driven by the motor, and a magnitude of a centrifugal force applied to the electric core 20 is variable.
The power of the motor can be selected according to actual needs, and the rotating shaft of the rotating tray 10 is connected with the output shaft of the motor, so that the output shaft of the motor drives the rotating tray 10 to rotate, so that the rotating tray 10 drives the battery cell 20 to rotate, when the battery cell 20 rotates, the electrolyte in the battery cell 20 is subjected to centrifugal force, and an eddy current field is formed between the pole piece and the diaphragm in the battery cell 20 under the action of the centrifugal force, so that when the electrolyte infiltrates the battery cell 20, the electrolyte infiltrates the battery cell 20 under the combined force formed by the gravity of the electrolyte and the centrifugal force, and therefore, compared with an infiltration mode of natural standing, in which the electrolyte is infiltrated only under the gravity of the electrolyte, the device provided by the embodiment of the invention has a better infiltration effect, and under the action of variable centrifugal force, the pole piece, the cavity of the battery cell 20, the pole piece, The moving amount of the electrolyte moving between the diaphragms is increased, and the moving times of the electrolyte are increased, so that the contact times of the electrolyte with the pole piece and the diaphragm are increased, the contact time is prolonged, the soaking effect of the electrolyte is improved, the time period for soaking the battery core 20 by the electrolyte can be shortened, and the soaking efficiency is improved.
Moreover, the rotation speeds of the battery cells 20 are different, the distances from the battery cells 20 to the rotation axis are different, the centrifugal forces applied to the battery cells 20 are different, and the eddy current-like fields formed by the electrolyte between the pole pieces and the diaphragms in the battery cells 20 under the action of different centrifugal forces are different, so that the electrolyte can be more fully infiltrated into the battery cells 20 through the different centrifugal forces applied to the battery cells 20, thereby improving the infiltration effect, shortening the infiltration period, and further improving the infiltration efficiency.
Optionally, the rotating tray 10 includes n layers of trays coaxially arranged, where n is a positive integer;
when the battery cells 20 are fixedly placed on the trays of different layers, the distances from the battery cells 20 to the rotation axes of the trays are different.
Specifically, the rotary tray 10 can be provided with a plurality of layers of trays, each layer of tray can be fixedly provided with a battery cell 20, and the distance from the battery cell 20 to the rotation axis is different, thus, when the rotary tray 10 rotates, the rotation speed of each layer of tray is the same, but because the distance from the battery cell 20 to the rotation axis is different, the size of the centrifugal force applied to the battery cell 20 on each layer of tray is different, different centrifugal forces can make the electrolyte in the cavity of the battery cell 20 and the pole piece in the battery cell 20, and the diaphragms are infiltrated by the multi-layer eddy currents, so that the electrolyte in the cavity of the battery cell 20 and the pole piece, and the diaphragms are contacted at different positions for multiple times, thereby improving the infiltration effect of infiltrating the electrolyte into the battery cell 20, the purpose of infiltrating the battery cell 20 by the electrolyte can be quickly completed, the infiltration period is shortened.
In specific implementation, the battery cells 20 injected with the electrolyte are sequentially transferred to the vicinity of the device for infiltrating the battery cells 20 with the electrolyte through the transfer belt, the battery cells 20 on the transfer belt are transferred to the first layer on the rotating tray 10 through the manipulator 50, after the battery cells 20 on the first layer rotate for a first preset time, the manipulator 50 transfers the battery cells 20 on the first layer to the tray on the second layer, and transfers the battery cells 20 on the transfer belt to the first layer tray, after the battery cells 20 on the second layer tray rotate for a second preset time, the battery cells 20 on the first layer are transferred to the tray on the second layer, the battery cells 20 on the rotating tray 10 are sequentially transferred from the first layer to the nth layer, and the battery cells 20 on the nth layer are removed through the manipulator 50, thereby realizing the mechanical automatic assembly line operation, the production efficiency is improved.
Exemplarily, each tray is provided with a limiting groove for fixedly placing the battery cell 20, the battery cell 20 is placed in the limiting groove, so that the battery cell 20 can be prevented from being thrown out of the tray or being shifted in position when the rotating tray 10 rotates, one battery cell 20 can be placed in one limiting groove, a plurality of battery cells 20 can also be placed in one limiting groove, and a plurality of limiting grooves for placing the battery cells 20 can be uniformly arranged on each tray at intervals in the circumferential direction.
Fig. 2 is a schematic structural diagram of a device for infiltrating a battery cell with an electrolyte according to a second embodiment of the present invention; fig. 3 is a schematic structural view of a spring clip structure on a bearing portion in a device for immersing a battery cell with an electrolyte according to a second embodiment of the present invention; fig. 4 is a schematic structural diagram of another apparatus for infiltrating a battery cell with an electrolyte according to a second embodiment of the present invention; referring to fig. 2 and 4, in an embodiment, the rotating tray 10 is a conical structure, multiple layers of accommodating spaces for accommodating the battery cells 20 are sequentially arranged on a conical surface of the conical structure from top to bottom at intervals, and distances from the battery cells 20 placed in the accommodating spaces of the multiple layers to a central axis of the conical structure increase from top to bottom.
Specifically, rotatory tray 10 can be the cone, the multilayer of having arranged at the interval from last to down is used for holding electric core 20 accommodation space on the conical surface of cone, a plurality of accommodation spaces that are used for holding electric core 20 of can also having arranged at even interval on every layer, and the accommodation space size that is used for holding electric core 20 on every layer is unanimous and quantity is relative, from last to down, the accommodation space of the same position on every layer all is on the contour line of a cone, and like this, manipulator 50 of being convenient for puts electric core 20 of last layer to on the one deck down, or put electric core 20 of next layer on the one deck up, thereby realize mechanical automation assembly line operation, improve electric core 20's production efficiency.
It should be noted that the accommodating space for placing the battery cell 20 may be a limiting groove processed on the conical surface and used for fixedly placing the battery cell 20, the battery cell 20 is located in the limiting groove, and the inner wall of the limiting groove is used for fixing the battery cell 20 to prevent the battery cell 20 from being thrown out of the limiting groove. The holding space for placing electric core 20 can also be a holding box, and the inner wall of holding box forms the holding space of placing electric core 20, and electric core 20 places in the holding box to fix the holding box on the conical surface of circular cone through slidable cardboard, jack catch isotructure, to this, the restriction is not done to this embodiment.
FIG. 5 is a cross-sectional view of the cartridge of FIG. 4; FIG. 6 is a bottom view of the cartridge clip of FIG. 4; referring to fig. 5 to 6, in an embodiment, a cartridge clip structure 30 may be further used for placing the battery cell 20, where the cartridge clip structure 30 may include a base and at least four side walls, where the base and the at least four side walls enclose a space formed to form an accommodating space for accommodating the battery cell 20, so as to facilitate placing the battery cell 20 in the cartridge clip structure 30 and taking out the battery cell 20 in the cartridge clip, at least four side walls of the cartridge clip structure 30 are arranged in pairs, and two opposite side walls may perform relative elastic movement, so that the battery cell 20 is clamped between the side walls to fix the battery cell 20, and the cartridge clip structure 30 fixes the cartridge clip structure 30 by using a fixing member 40 arranged on the conical surface.
Wherein, the fixing member 40 may include a bearing portion 401 and a limiting portion 402, the bearing portion 401 is fixedly disposed on the conical surface of the conical structure, for example, the bearing portion 401 is a bearing plate, the bearing plate is vertically fixed on the conical surface of the cone, the bearing plate is used for preventing the cartridge clip structure 30 from sliding downwards along the conical surface, the outer wall of the cartridge clip structure 30 attached to the bearing portion 401 is provided with at least two protrusions 301, a groove 4011 matched with the protrusion 301 is disposed on the bearing portion 401 at a position corresponding to the protrusion 301, when the cartridge clip structure 30 is disposed on the bearing portion 401, the protrusion 301 is located in the groove 4011 to prevent the cartridge clip structure 30 from being thrown out along the circumferential direction of the cone under the centrifugal force, further, in order to further fix the cartridge clip structure 30, the bearing plate is further slidably connected with the limiting portion 402, for example, the limiting portion 402 may be a limiting stopper or a limiting plate, one end of the limiting portion 402 is slidably connected, cartridge clip structure 30 presss from both sides and establishes between the conical surface of spacing portion 402 and circular cone to restriction cartridge clip structure 30 removes along the direction of perpendicular circular cone conical surface, when needs are dismantled cartridge clip structure 30 from the current layer, only need with spacing portion 402 orientation keep away from cartridge clip structure 30's direction slip, rethread manipulator 50 with cartridge clip structure 30 remove to next layer can, in order to realize the automatic pipelining of machinery, thereby improve the production efficiency of electric core 20.
On the basis of the above embodiment, still including gasbag 60, electrolyte has been held in gasbag 60, gasbag 60 communicates with the cavity of electric core 20, gasbag 60 and electric core 20 are fixed together and are placed each layer accommodation space on the conical surface of centrum structure, holding chamber or spacing inslot, when electric core 20 and gasbag 60 rotate along with rotatory tray 10, the electrolyte in electric core 20 and the gasbag 60 can receive centrifugal force simultaneously, the electrolyte in gasbag 60 gets into the cavity of electric core 20 and soaks the electric core under the effect of centrifugal force.
Fig. 7 is a schematic diagram of a cycle test when the cell temperature is 25 ℃ according to the second embodiment of the present invention. Referring to fig. 7, in the present embodiment, the cycling tests of the battery cell 20 are performed at a temperature of 25 ℃ for the battery cell 20 under two conditions of naturally standing the battery cell 20 and soaking the battery cell 20 under a variable centrifugal force, and the results show that the effect of soaking the battery cell 20 with the electrolyte for 1 hour through centrifugal aging under the variable centrifugal force is substantially the same as the soaking effect of soaking the battery cell 20 with the electrolyte for 36 hours through natural aging, so as to prove that the effect of soaking the battery cell 20 with the electrolyte under the centrifugal force is improved, and it can be seen from the figure that, if the battery cell 20 is soaked through natural aging, the phenomenon of the battery cell 20 cycling and water jumping caused by the accommodating is caused by the pole piece inside the battery cell 20 when the time of natural aging is short, which is mainly caused by the pole piece, The membrane and the electrolyte are not soaked uniformly, and the soaking effect is poor.
It should be noted that aging refers to storing the solution under certain conditions for a certain period of time.
According to the device for infiltrating the battery cell with the electrolyte, the battery cell injected with the electrolyte is fixedly placed on the rotating tray, the rotating tray rotates around the axis of the rotating tray under the driving of the motor, the rotating tray can drive the battery cell to rotate together when rotating, the electrolyte in the battery cell can be subjected to centrifugal force when the battery cell rotates, the centrifugal force applied to the battery cell is variable, and the contact frequency of the electrolyte in the battery cell and pole pieces, diaphragms and the like in the battery cell can be increased under the action of different centrifugal forces, so that the infiltration effect is improved; in addition, the time period for fully soaking the battery core by the electrolyte can be shortened, and the soaking efficiency is improved.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A method of infiltrating a cell with an electrolyte, comprising:
fixedly placing the battery cell injected with the electrolyte on a rotary tray;
the battery cell rotates along with the rotating tray, and the centrifugal force applied to the battery cell is variable.
2. The method of electrolyte infiltrating a cell of claim 1, wherein the cell rotates with the rotating tray, and the step of subjecting the cell to a centrifugal force of variable magnitude comprises:
the rotation speeds of the battery cells are different in different time periods;
or the distance between the battery cell and the rotation center of the rotation tray is different in different time periods.
3. The method of infiltrating the cell with the electrolyte solution of claim 2, wherein the rotating tray comprises n layers of trays arranged coaxially, wherein n is a positive integer; the step of varying the distance of the cells from the rotation center of the rotation tray in different time periods includes:
fixedly placing the battery cell injected with the electrolyte on an ith layer of tray, and stopping rotating the battery cell along with the ith layer of tray for a first preset time, wherein i is a positive integer and is more than or equal to 1 and less than n;
transferring the battery cell placed on the tray of the ith layer to a tray of the (i + x) th layer, and stopping rotating after rotating for a second preset time along with the tray of the (i + x) th layer, wherein i + x is a positive integer, and is more than 1 and less than or equal to n;
the rotating speed of the (i + x) th layer tray is the same as that of the (i) th layer tray, and the distance from the battery cell to the axis when the battery cell is on the (i + x) th layer tray is larger than the distance from the battery cell to the axis when the battery cell is on the (i) th layer tray.
4. The method of electrolyte infiltrating a cell of claim 3, wherein the step of varying the distance of the cell from the center of rotation of the rotating tray over different time periods comprises:
and sequentially transferring the battery cells injected with the electrolyte to n trays on the 1 st layer to the nth layer.
5. An apparatus for infiltrating a cell with an electrolyte, comprising: the battery comprises a motor and a rotary tray for placing a battery core injected with electrolyte;
the rotating shaft of the rotating tray is connected with the output shaft of the motor, the rotating tray is driven by the motor to drive the battery cell to rotate when rotating, and the centrifugal force applied to the battery cell is variable.
6. The apparatus of claim 5, wherein the rotating tray comprises n layers of trays coaxially arranged, where n is a positive integer;
when the battery cell is fixedly placed on the trays of different layers, the distances from the battery cell to the axis are different.
7. The apparatus of claim 6, wherein each tray has a retaining groove, and the cells are disposed in the retaining grooves.
8. The apparatus of claim 5, wherein the rotating tray includes a conical main body, and a plurality of layers of accommodating spaces for accommodating the battery cells are sequentially arranged on a conical surface of the conical main body at intervals along a direction from a small end to a large end of the conical main body, and distances from the battery cells placed in the accommodating spaces to a central axis of the conical main body are sequentially increased.
9. The apparatus of claim 8, further comprising a cartridge clip structure and a fixing member for fixing the cartridge clip structure:
the cartridge clip structure comprises a base and four side walls which are sequentially connected end to end, the base and the four side walls enclose to form the containing space for containing the battery cell, and the four side walls are arranged oppositely in pairs and two opposite side walls can move relatively, so that the battery cell is clamped between the four side walls;
the fixing piece fixes the cartridge clip structure containing the battery cell on the conical surface of the conical main body.
10. The apparatus of claim 9, wherein the fixture comprises a bearing portion and a limiting portion;
the bearing part is fixedly arranged on the conical surface of the conical main body, the cartridge clip structure is placed on the bearing part and abuts against the conical surface of the conical main body, and the bearing part is used for preventing the cartridge clip structure from sliding downwards along the conical surface of the conical main body;
the outer wall of the cartridge clip structure, which is attached to the bearing part, is provided with at least two bulges, the bearing part is provided with grooves matched with the bulges at positions corresponding to the bulges, and when the cartridge clip structure is placed on the bearing part, the bulges are positioned in the grooves;
one end of the limiting portion is connected to the bearing portion in a sliding mode, the limiting portion is parallel to the top face of the cartridge clip structure, and the cartridge clip structure is clamped between the limiting portion and the conical face of the conical main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010385352.9A CN111540957B (en) | 2020-05-09 | 2020-05-09 | Method and device for infiltrating battery cell with electrolyte |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010385352.9A CN111540957B (en) | 2020-05-09 | 2020-05-09 | Method and device for infiltrating battery cell with electrolyte |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111540957A true CN111540957A (en) | 2020-08-14 |
| CN111540957B CN111540957B (en) | 2021-09-14 |
Family
ID=71977602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010385352.9A Active CN111540957B (en) | 2020-05-09 | 2020-05-09 | Method and device for infiltrating battery cell with electrolyte |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111540957B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112018426A (en) * | 2020-09-25 | 2020-12-01 | 珠海冠宇电池股份有限公司 | Battery cell aging device and aging method |
| CN112436193A (en) * | 2020-11-30 | 2021-03-02 | 珠海冠宇电池股份有限公司 | Battery cell aging equipment and aging control method |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012074217A2 (en) * | 2010-12-02 | 2012-06-07 | 주식회사 엘지화학 | Method for deaerating secondary battery using centrifugal force |
| WO2014001212A1 (en) * | 2012-06-28 | 2014-01-03 | Evonik Litarion Gmbh | Self-limiting electrolyte-filling process |
| CN205508967U (en) * | 2016-02-23 | 2016-08-24 | 深圳市朗泰通电子有限公司 | Square nickel -hydrogen battery eccentric device |
| CN106960981A (en) * | 2017-04-06 | 2017-07-18 | 珠海光宇电池有限公司 | The aging method of battery core |
| CN206388801U (en) * | 2016-12-29 | 2017-08-08 | 惠州Tcl金能电池有限公司 | Battery electrolyte infiltration apparatus |
| CN107464908A (en) * | 2016-06-02 | 2017-12-12 | 万向二三股份公司 | A kind of barrier film wetting method of soft bag lithium ionic cell |
| CN207038647U (en) * | 2017-08-04 | 2018-02-23 | 珠海光宇电池有限公司 | Lithium battery centrifugal device |
| CN207504113U (en) * | 2017-12-01 | 2018-06-15 | 宁德新能源科技有限公司 | Battery core infiltration apparatus |
| CN207781795U (en) * | 2017-10-26 | 2018-08-28 | 河北银隆新能源有限公司 | A kind of lithium ion battery standing device |
| CN109065772A (en) * | 2018-03-19 | 2018-12-21 | 东莞纵城智能科技有限公司 | A kind of movement packaging technology of soft-package battery |
| CN109193035A (en) * | 2018-08-28 | 2019-01-11 | 夏正奎 | A kind of battery electrolyte homogeneous immersion equipment and homogeneous immersion method |
| CN208849019U (en) * | 2018-08-28 | 2019-05-10 | 陕西中丰新能源有限公司 | A kind of battery electrolyte homogeneous immersion equipment |
| CN208923292U (en) * | 2018-08-28 | 2019-05-31 | 陕西中丰新能源有限公司 | A kind of electrolyte infiltration equipment |
| CN209571477U (en) * | 2019-02-28 | 2019-11-01 | 天津力神电池股份有限公司 | A kind of polymer Li-ion battery fluid injection auxiliary device |
| CN110828766A (en) * | 2019-11-19 | 2020-02-21 | 凌帕新能源科技(上海)有限公司 | Battery cell liquid injection method |
-
2020
- 2020-05-09 CN CN202010385352.9A patent/CN111540957B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012074217A2 (en) * | 2010-12-02 | 2012-06-07 | 주식회사 엘지화학 | Method for deaerating secondary battery using centrifugal force |
| WO2014001212A1 (en) * | 2012-06-28 | 2014-01-03 | Evonik Litarion Gmbh | Self-limiting electrolyte-filling process |
| CN205508967U (en) * | 2016-02-23 | 2016-08-24 | 深圳市朗泰通电子有限公司 | Square nickel -hydrogen battery eccentric device |
| CN107464908A (en) * | 2016-06-02 | 2017-12-12 | 万向二三股份公司 | A kind of barrier film wetting method of soft bag lithium ionic cell |
| CN206388801U (en) * | 2016-12-29 | 2017-08-08 | 惠州Tcl金能电池有限公司 | Battery electrolyte infiltration apparatus |
| CN106960981A (en) * | 2017-04-06 | 2017-07-18 | 珠海光宇电池有限公司 | The aging method of battery core |
| CN207038647U (en) * | 2017-08-04 | 2018-02-23 | 珠海光宇电池有限公司 | Lithium battery centrifugal device |
| CN207781795U (en) * | 2017-10-26 | 2018-08-28 | 河北银隆新能源有限公司 | A kind of lithium ion battery standing device |
| CN207504113U (en) * | 2017-12-01 | 2018-06-15 | 宁德新能源科技有限公司 | Battery core infiltration apparatus |
| CN109065772A (en) * | 2018-03-19 | 2018-12-21 | 东莞纵城智能科技有限公司 | A kind of movement packaging technology of soft-package battery |
| CN109193035A (en) * | 2018-08-28 | 2019-01-11 | 夏正奎 | A kind of battery electrolyte homogeneous immersion equipment and homogeneous immersion method |
| CN208849019U (en) * | 2018-08-28 | 2019-05-10 | 陕西中丰新能源有限公司 | A kind of battery electrolyte homogeneous immersion equipment |
| CN208923292U (en) * | 2018-08-28 | 2019-05-31 | 陕西中丰新能源有限公司 | A kind of electrolyte infiltration equipment |
| CN209571477U (en) * | 2019-02-28 | 2019-11-01 | 天津力神电池股份有限公司 | A kind of polymer Li-ion battery fluid injection auxiliary device |
| CN110828766A (en) * | 2019-11-19 | 2020-02-21 | 凌帕新能源科技(上海)有限公司 | Battery cell liquid injection method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112018426A (en) * | 2020-09-25 | 2020-12-01 | 珠海冠宇电池股份有限公司 | Battery cell aging device and aging method |
| CN112436193A (en) * | 2020-11-30 | 2021-03-02 | 珠海冠宇电池股份有限公司 | Battery cell aging equipment and aging control method |
| CN112436193B (en) * | 2020-11-30 | 2022-04-12 | 珠海冠宇电池股份有限公司 | Battery cell aging equipment and aging control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111540957B (en) | 2021-09-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111540957B (en) | Method and device for infiltrating battery cell with electrolyte | |
| CN214114127U (en) | Lithium cell is centre gripping transfer device for production and processing | |
| CN109581234B (en) | Lithium ion battery consistency screening method | |
| CN202839865U (en) | Multifunctional device for putting lithium battery core into shell | |
| CN204405808U (en) | Whole-automatic double-drum battery washing facility | |
| CN206412426U (en) | A kind of battery modules assembly tooling | |
| CN211103583U (en) | Clamping device for lithium battery machining | |
| CN1298073C (en) | Non-aqueous electrolyte secondary cell | |
| GB2612437A (en) | Aging test device for multiple batteries in extruded state and test method | |
| CN207426048U (en) | Characterize the centrifugal device of battery core infiltration | |
| KR102172844B1 (en) | Mandrel unit and rolling device for secondary battery | |
| CN210489761U (en) | Lithium ion battery's device that stews | |
| CN102794272A (en) | Grading method for lithium-ion battery capacity | |
| CN102377227A (en) | Charging device, electrical device, current generation method, and charging method | |
| CN220752274U (en) | Rotatory test fixture of battery | |
| CN112186258A (en) | Lithium ion battery aging device and aging method | |
| CN110828766A (en) | Battery cell liquid injection method | |
| CN208849019U (en) | A kind of battery electrolyte homogeneous immersion equipment | |
| CN220188584U (en) | Heatable and liquid-cooled clamp for battery test | |
| CN216054857U (en) | Novel battery aging device | |
| CN221102167U (en) | Cylindrical battery electrolyte infiltration device | |
| CN214957018U (en) | Lithium battery standing equipment accelerated by centrifugal force | |
| CN218123482U (en) | Quick CTP device of forked tail slot type electricity core | |
| CN221016644U (en) | Centrifugal adapter loading device | |
| CN112436193B (en) | Battery cell aging equipment and aging control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |