CN221201252U - Battery formation device and battery formation system - Google Patents

Abstract

The application provides a battery formation device and a battery formation system. The bearing cabinet body comprises a plurality of accommodating cavities, at least parts of the accommodating cavities are arranged side by side along a first direction, and the accommodating cavities are used for accommodating battery cells. The baffle assembly is provided with the baffle assembly along the first direction between two adjacent accommodation cavities, and the baffle assembly is provided with the communication channel, and the communication channel communicates two adjacent accommodation cavities, and the baffle assembly is configured to close the communication channel when the battery monomer thermal runaway. The application can improve the reliability of the battery monomer in the formation process.

Description

Battery formation device and battery formation system

Technical Field

The present application relates to the field of battery technologies, and in particular, to a battery formation device and a battery formation system.

Background

Battery cells are widely used in electronic devices such as cellular phones, notebook computers, battery cars, electric vehicles, electric airplanes, electric ships, electric toy vehicles, electric toy ships, electric toy airplanes, electric tools, and the like. The battery cells may include cadmium-nickel battery cells, hydrogen-nickel battery cells, lithium ion battery cells, secondary alkaline zinc-manganese battery cells, and the like.

In the development of battery technology, how to improve the reliability of a battery has been one of the research directions in battery technology.

Disclosure of utility model

In view of the above, the present application provides a battery formation device and a battery formation system, which can improve the reliability of a battery cell in the formation process.

In one aspect, an embodiment of the application provides a battery formation device comprising a carrying cabinet body and a partition board assembly. The bearing cabinet body comprises a plurality of accommodating cavities, at least parts of the accommodating cavities are arranged side by side along a first direction, and the accommodating cavities are used for accommodating battery cells. The baffle assembly is provided with the baffle assembly along the first direction between two adjacent accommodation cavities, and the baffle assembly is provided with the communication channel, and the communication channel communicates two adjacent accommodation cavities, and the baffle assembly is configured to close the communication channel when the battery monomer thermal runaway.

In the scheme, through setting up the baffle subassembly to set up the intercommunication passageway on the baffle subassembly, make the temperature of the holding intracavity of intercommunication even, reduce the single battery formation temperature of local region and lead to the single performance reduction's of battery possibility in formation process. The separator assembly is configured to close the communication channel when the battery cell is in thermal runaway so as to isolate the battery cell which is in thermal runaway from other battery cells which are not in thermal runaway, thereby reducing the possibility that heat or emissions generated by the battery cell which is in thermal runaway affect the battery cell which is not in thermal runaway, further reducing the possibility that the battery cell which is not in thermal runaway is in thermal runaway under the influence of the battery cell which is in thermal runaway, so that the yield of the battery cell in the formation process is reduced, and improving the reliability of the battery cell in the formation process.

In some embodiments, the baffle assembly includes a first baffle, a second baffle, and a first shutter, a communication channel is formed between the first baffle and the second baffle, the first baffle is movably connected with the first shutter, and the first shutter is used for closing or opening the communication channel.

In the scheme, the first baffle plate, the second baffle plate and the first baffle plate are arranged to simplify the composition structure of the baffle plate assembly, so that the manufacturing cost of the baffle plate assembly is reduced.

In some embodiments, the first baffle is provided with a recess, and at least a portion of the first baffle is disposed in the recess.

In the scheme, the first shielding plate is arranged in the concave part, so that the stability of movement of the first shielding plate in the process of closing or opening the communication channel is improved, the possibility that the released emissions caused by thermal runaway of the battery cells impact the first shielding plate to cause that the first shielding plate cannot completely shield the communication channel is reduced, and the reliability of the first shielding plate is improved.

In some embodiments, the baffle assembly further comprises two second shielding plates, the two second shielding plates are respectively arranged at two sides of the second baffle along the thickness direction, and the second shielding plates are movably connected with the second baffle. Wherein the separator assembly is configured such that the first and second shutters move toward each other such that at least a portion of the first shutter is positioned between the two second shutters when the battery cell is thermally out of control.

In the above-described aspect, when thermal runaway occurs in the battery cell, the first shielding plate and the second shielding plate move toward each other until at least part of the first shielding plate is located between the two second shielding plates, thereby closing the communication passage to separate the battery cell in which thermal runaway does not occur from the battery cell in which thermal runaway occurs. Through setting up first shielding plate and second shielding plate for first shielding plate and second shielding plate can bear bigger impact strength, improve the shielding strength of the shielding region that first shielding plate and second shielding plate formed, reduce first shielding plate and second shielding plate and can't shelter from the possibility of intercommunication passageway completely under the impact that receives the emission.

In some embodiments, the battery formation device further comprises a sensing device, and each accommodating cavity is internally provided with the sensing device, and the sensing device is used for monitoring thermal runaway information of the battery cell.

In the above scheme, through setting up induction system, when induction system inducted thermal runaway information, control first shielding plate closes the intercommunication passageway to separate between the battery monomer that thermal runaway and the battery monomer that thermal runaway does not take place, in order to improve the timeliness that the intercommunication passageway closed, improve the automation of battery formation device.

In some embodiments, the sensing device comprises at least one of a smoke sensing device, a temperature sensing device, and a gas sensing device.

In the scheme, the accuracy of the sensing device in judging the thermal runaway battery is improved by arranging various sensing devices, and the reliability of the battery formation device is improved.

In some embodiments, the carrying cabinet body comprises a formation cavity, the formation cavity comprises at least two accommodation cavities arranged along the first direction, and the formation cavity is provided with a gas sensing device.

In the scheme, the manufacturing cost of the battery formation device is reduced and the manufacturing cost of the battery monomers is reduced by reducing the arrangement quantity of the gas sensing devices.

In some embodiments, the battery formation device further comprises a connecting piece and a clamping piece, wherein the connecting piece and the clamping piece are arranged in each accommodating cavity, the clamping piece is used for clamping the battery unit, an induction device is arranged on one side, facing the clamping piece, of the connecting piece, and the connecting piece is movably arranged along the direction facing or deviating from the clamping piece.

In the scheme, through the arrangement, the relative distance between the induction device and the battery monomer can be adjusted, so that the battery formation device is applicable to battery monomers with different specifications, and the manufacturing cost of the battery monomer is reduced.

In some embodiments, the battery formation device further comprises a fire device, each of the containment chambers is provided with a fire device for spraying fire-fighting gas in a first preset condition, spraying fire-fighting liquid or solid in a second preset condition, the first preset condition comprising the detection of thermal runaway information by the plurality of sensing devices, and the second preset condition comprising the detection of thermal runaway information by the sensing devices after the fire device sprays fire-fighting gas.

In the scheme, the influence of the thermal runaway battery monomer on the battery monomer, other equipment and personnel which are not in thermal runaway is reduced, and the reliability of the battery monomer in the formation process is improved.

In some embodiments, an extension groove is disposed on a side of the connecting piece facing the clamping piece, the extension groove extends along at least the first direction, at least part of the fire-fighting device is disposed in the extension groove, and the fire-fighting device is slidably connected with the extension groove.

In the scheme, the fire-fighting device and the extension groove are in sliding connection, so that the fire-fighting device can adjust a spraying area when spraying fire-extinguishing materials, the key spraying effect on a fire area is achieved, the fire-extinguishing efficiency is improved, and the reliability of the battery formation device is improved.

In a second aspect, an embodiment of the present application provides a battery formation system, including a battery formation device and a negative pressure device in any of the foregoing embodiments.

The foregoing description is only an overview of the present application, and is intended to be implemented in accordance with the teachings of the present application in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present application more readily apparent.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.

Fig. 1 is a schematic structural diagram of a battery formation device according to an embodiment of the present application;

FIG. 2 is an enlarged schematic view of the structure of P in FIG. 1;

FIG. 3 is a schematic view of a further enlarged construction of P in FIG. 1;

FIG. 4 is a schematic view of yet another enlarged structure of P in FIG. 1;

fig. 5 is an enlarged schematic view of Q in fig. 4.

In the accompanying drawings:

10. a carrying cabinet body; 11. a carrying plate;

20. A separator assembly; 21. a communication passage; 22. a first separator; 221. a concave portion; 222. a blocking portion; 23. a second separator; 24. a first shielding plate; 25. a second shielding plate;

30. an induction device; 31. a gas sensing device;

40. A connecting piece;

50. A clamping member; 60. a fire fighting device;

1. a pressure relief port; 2. a control panel; 3. an emergency stop button; 4. a liquid outlet;

c1, an accommodating cavity; c2, forming a cavity;

x, a first direction; y, second direction.

Detailed Description

Embodiments of the technical scheme of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present application, and thus are merely examples, and are not intended to limit the scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.

In the description of embodiments of the present application, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" means two or more (including two), and similarly, "plural sets" means two or more (including two), and "plural sheets" means two or more (including two).

In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.

With the development of battery technology, battery cells are applied to more and more fields, and gradually replace the traditional petrochemical energy sources in the field of automobile power. The battery cells may store chemical energy and controllably convert the chemical energy into electrical energy. In the recyclable battery cell, the active material can be activated by means of charging after discharge to continue use.

The battery cell may be a lithium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead storage battery, etc., which is not limited by the embodiment of the application.

The pressure release mechanism on the battery cell has an important influence on the reliability of the battery cell. For example, when a short circuit, overcharge, or the like occurs, thermal runaway occurs inside the battery cell and thus pressure rises may occur. In this case, the internal pressure can be released outwards by actuation of the pressure release mechanism, so as to prevent explosion and ignition of the battery cells.

A pressure relief mechanism refers to an element or component that actuates to relieve internal pressure when the internal pressure of a battery cell reaches a predetermined threshold. The threshold design varies according to design requirements. The threshold may depend on the material of one or more of the positive electrode tab, the negative electrode tab, the electrolyte and the separator in the battery cell.

The pressure release mechanism may take the form of, for example, an explosion-proof valve, a gas valve, a pressure release valve, or a safety valve, and may specifically take the form of a pressure-sensitive element or a construction, i.e., when the internal pressure of the battery cell reaches a predetermined threshold, the pressure release mechanism performs an action or a weak area provided in the pressure release mechanism is ruptured, thereby forming an opening or a channel through which the internal pressure can be released. Alternatively, the pressure release mechanism may also adopt a temperature sensitive element or structure, that is, when the internal temperature of the battery cell reaches a predetermined threshold, the pressure release mechanism performs an action, thereby forming an opening or channel through which the internal pressure can be released.

By "actuation" in the sense of the present application is meant that the pressure relief mechanism is actuated or activated to a state such that the internal pressure of the battery cell is relieved. The actions generated by the pressure relief mechanism may include, but are not limited to: at least a portion of the pressure relief mechanism breaks, tears or opens, etc. When the pressure release mechanism is actuated, high-temperature and high-pressure substances inside the battery cell are discharged outwards from the actuated position as emissions. In this way, the pressure of the battery cell can be relieved under the condition of controllable pressure, so that the occurrence of a potential serious accident is avoided.

References to emissions from a battery cell in the present application include, but are not limited to: electrolyte, dissolved or split positive and negative electrode sheets, fragments of separators, high temperature and pressure gases generated by the reaction, flame, and the like.

The production process of the battery cell generally comprises the processes of stirring, coating, rolling, slitting, assembling, forming and the like, and the forming process is an extremely important process, and has an important influence on the cycle performance of the battery cell. The formation of the battery cell may refer to a first charge-discharge process of the battery cell after the battery cell is injected with the liquid. Illustratively, in a lithium-ion battery cell, formation may activate an active material in the battery cell, activating the lithium-ion battery, and at the same time, a lithium salt and an electrolyte undergo a side reaction, generating a Solid Electrolyte Interface (SEI) film on the negative side of the battery cell, which may prevent the side reaction from further occurring, thereby reducing the loss of active lithium in the battery cell. The quality of the SEI film has great influence on the cycle life, initial capacity loss, rate performance and the like of the battery cell.

In the formation process, gas is generated in the battery cell, and if the gas cannot be discharged, the cycle performance of the battery cell is affected, for example, the lithium ion battery cell has the problems of interfacial lithium precipitation and the like. In addition, the gas can also cause the expansion deformation of the battery cell, so that the dimension specification of the battery cell is not up to standard.

Therefore, in the formation process, it is generally necessary to press and heat the battery cell to accelerate the discharge of the gas, reduce the gas remaining inside the battery cell, reduce the deformation of the battery cell, and improve the appearance yield of the battery cell.

In the formation process, in order to improve production efficiency, a plurality of battery monomers are generally formed in batches, and in the formation process, thermal runaway is generated in each battery monomer, so that the battery monomers release emissions, fire and even explosion, and the formation of adjacent battery monomers is abnormal and even the risk of thermal runaway is caused, thereby reducing the formation yield and reducing the reliability of the battery monomers in the formation process.

In view of this, the embodiment of the application provides a battery formation device, by arranging a baffle assembly and arranging a communication channel on the baffle assembly, the temperature in a communicated accommodating cavity is uniform, and the possibility that the performance of a battery monomer is reduced due to insufficient formation temperature of the battery monomer in a local area in the formation process of the battery monomer is reduced. The separator assembly is configured to close the communication channel when the battery cell is in thermal runaway so as to isolate the battery cell which is in thermal runaway from other battery cells which are not in thermal runaway, thereby reducing the possibility that heat or emissions generated by the battery cell which is in thermal runaway affect the battery cell which is not in thermal runaway, further reducing the possibility that the battery cell which is not in thermal runaway is in thermal runaway under the influence of the battery cell which is in thermal runaway, so that the yield of the battery cell in the formation process is reduced, and improving the reliability of the battery cell in the formation process.

Fig. 1 is a schematic structural diagram of a battery formation device according to an embodiment of the present application.

Referring to fig. 1, an embodiment of the present application provides a battery forming apparatus, which includes a carrying cabinet 10 and a partition board assembly 20. The carrying case 10 includes a plurality of accommodating chambers C1, at least portions of the plurality of accommodating chambers C1 being arranged side by side in the first direction X, the accommodating chambers C1 being for accommodating the battery cells. The partition plate assembly 20 is provided with the partition plate assembly 20 between two adjacent accommodating chambers C1 along the first direction X, the partition plate assembly 20 is provided with the communication channel 21, the communication channel 21 communicates with the two adjacent accommodating chambers C1, and the partition plate assembly 20 is configured to close the communication channel 21 when the battery cells are thermally out of control.

The battery formation device comprises a bearing cabinet body 10 and a partition board assembly 20, wherein the bearing cabinet body 10 comprises a plurality of containing cavities C1, the bearing cabinet body 10 can comprise a frame structure formed by a plurality of outer walls and a plurality of bearing plates 11 positioned in the frame structure, the bearing plates 11 are used for bearing battery monomers, and the bearing plates 11 and the partition board assembly 20 jointly enclose to form a plurality of containing cavities C1. Alternatively, one or more battery cells may be accommodated in each accommodation chamber C1. Of course, the specific structure of the carrying cabinet body 10 is not particularly limited in the embodiment of the present application, so that the carrying cabinet body 10 can be ensured to be used for the formation process of the battery cell. For example, the carrying case 10 may be a case structure.

Alternatively, the thickness dimension of the carrier plate 11 may be greater than or equal to the thickness dimension of the baffle assembly 20. Of course, the thickness dimension of the diaphragm assembly 20 may also be greater than the thickness dimension of the carrier plate 11. Alternatively, the thickness dimension of the carrier plate 11 comprises 5mm-15mm, for example, the thickness of the carrier plate 11 is 5mm, 8mm, 10mm, 12mm or 15mm. Alternatively, the thickness dimension of the baffle assembly 20 includes 3mm-10mm, for example, the thickness of the baffle assembly 20 is 3mm, 4mm, 5mm, 8mm, or 10mm.

In some examples, at least a portion of the plurality of receiving cavities C1 are arranged side-by-side along the first direction X, i.e., a portion of the plurality of receiving cavities C1 are arranged side-by-side along the first direction X, another portion of the plurality of receiving cavities C1 may be arranged side-by-side along the second direction Y, e.g., the plurality of receiving cavities C1 form an array arrangement along the first direction X and the second direction Y. Alternatively, the plurality of accommodation cavities C1 arranged side by side in the first direction X may communicate through the communication passage 21, and the plurality of accommodation cavities C1 arranged side by side in the second direction Y may not communicate with each other. In other examples, all of the receiving chambers C1 are arranged side by side along the first direction X.

Alternatively, the number of the plurality of accommodation chambers C1 arranged in the first direction X and the number of the plurality of accommodation chambers C arranged in the second direction Y may be the same, but may be different. Illustratively, the 4X4 receiving cavities C1 are arranged in an array along the first direction X and along the second direction Y.

The partition plate assembly 20 is provided with a communication passage 21, alternatively, the communication passage 21 may include a through hole and a gap, and one or more through holes are exemplarily provided on the partition plate assembly 20 to communicate between two accommodation chambers C1 adjacent in the first direction X.

Alternatively, the communication channel 21 of the separator assembly 20 may be closed by a manual or automatic means when thermal runaway of the battery cells occurs.

In the embodiment of the application, the partition plate assembly 20 is arranged, and the communication channel 21 is arranged on the partition plate assembly 20, so that the temperature in the communicated accommodating cavity C1 is uniform, and the possibility that the performance of the battery cell is reduced due to insufficient formation temperature of the battery cell in a local area in the formation process of the battery cell is reduced. The separator assembly 20 is configured to close the communication passage 21 when the battery cell is thermally out of control to isolate the battery cell from other battery cells that are not thermally out of control, thereby reducing the possibility that heat or emissions generated by the battery cell that is not thermally out of control affect the battery cell that is not thermally out of control, thereby reducing the possibility that the battery cell that is not thermally out of control is thermally out of control under the influence of the battery cell that is thermally out of control to reduce the yield of the battery cell in the formation process, and improving the reliability of the battery cell in the formation process.

In some examples, the battery formation device may further include a pressure relief vent 1, a control panel 2, and a scram button 3. In the formation process of the battery cell, the accommodating cavity C1 needs to be changed into a vacuum environment through a negative pressure device, and when the battery cell is in thermal runaway, the pressure relief opening 1 can be used for changing the vacuum accommodating cavity C1 into other conventional accommodating cavities C1. The control panel 2 may be used to control operating parameters to perform chemical formation of battery cells of different specifications. The emergency stop button 3 is used for emergency power-off, and when thermal runaway occurs in the battery cell, the formation procedure of the battery formation device is interrupted by starting the emergency stop button 3.

Fig. 2 is an enlarged schematic view of P in fig. 1. Fig. 3 is a schematic view of yet another enlarged structure of P in fig. 1. Fig. 4 is a schematic view of yet another enlarged structure of P in fig. 1.

In some alternative embodiments, referring to fig. 1 to 4, the partition assembly 20 includes a first partition 22, a second partition 23, and a first shielding plate 24, a communication channel 21 is formed between the first partition 22 and the second partition 23, the first partition 22 is movably connected to the first shielding plate 24, and the first shielding plate 24 is used to close or open the communication channel 21.

Alternatively, the first partition 22 and the second partition 23 may be disposed opposite to each other in the second direction Y with a gap between the first partition 22 and the second partition 23, the gap forming the communication passage 21. Alternatively, the communication passage 21 between the first separator 22 and the second separator 23 may also be in a through-hole shape, for example, the first separator 22 is recessed toward one side surface of the second separator 23 to form a groove structure, the second separator 23 is recessed toward one side surface of the first separator 22 to form a groove structure, the opposite sides of the first separator 22 and the second separator 23 may be disposed in abutment, and the two groove structures form a through-hole shape. Of course, the opposite sides of the first separator 22 and the second separator 23 may be disposed at intervals.

Alternatively, the area of the first shielding plate 24 in the thickness direction may be greater than or equal to the longitudinal sectional area of the communication passage 21.

Alternatively, the first partition 22 and the second partition 23 may be fixedly connected to two different carrier plates 11, and the first partition 22 and the first shielding plate 24 may be movably connected, i.e. the first shielding plate 24 may be moved in a single direction or in multiple directions with respect to the first partition 22. Alternatively, the first shutter 24 may be movable in the second direction Y. When the first shielding plate 24 shields the communication passage 21 entirely, the communication passage 21 is closed by the first shielding plate 24, and when the first shielding plate 24 does not shield the communication passage 21 entirely, the communication passage 21 is opened by the first shielding plate 24.

In other examples, the number of first baffles 24 includes a plurality, with one portion of the first baffles 24 being movably coupled to the first barrier 22 and another portion of the first baffles 24 being movably coupled to the second barrier 23.

In these alternative embodiments, the first separator 22, the second separator 23, and the first shielding plate 24 are provided to simplify the constituent structure of the separator assembly 20, thereby reducing the manufacturing cost of the separator assembly 20.

In some alternative embodiments, referring to fig. 1 and 3, the first baffle 22 is provided with a recess 221, and at least a portion of the first baffle 24 is disposed in the recess 221.

Alternatively, the surface of the first separator 22 facing the side of the second separator 23 is recessed to form the recess 221, or the number of the first separators 22 includes two, the two first separators 22 are disposed at intervals in the first direction X, and a gap between the two first separators 22 forms the recess 221.

At least a portion of the first shield plate 24 is disposed in the recess 221, i.e., a portion of the first shield plate 24 is disposed in the recess 221, or the entirety of the first shield plate 24 may be disposed in the recess 221.

As an example, when the communication passage 21 is opened, all of the first shielding plate 24 may be located in the recess 221, and when it is necessary to close the communication passage 21, the first shielding plate 24 is moved relative to the first partition 22 so that part or all of the first shielding plate 24 is moved from the recess 221 to the outside of the recess 221 to shield the communication passage 21.

Optionally, the first shielding plate 24 is movably connected with an inner wall of the recess 221.

Alternatively, a groove extending in the second direction Y may be provided in the recess 221, and the first shutter 24 is provided with a sliding structure matching the groove, at least part of the sliding structure being located in the groove.

In these alternative embodiments, by disposing the first shielding plate 24 in the recess 221 to improve the stability of the movement of the first shielding plate 24 during the closing or opening of the communication channel 21, the possibility that the released emissions hit the first shielding plate 24 due to thermal runaway of the battery cells may be reduced, so that the first shielding plate 24 may not completely shield the communication channel 21, and the reliability of the first shielding plate 24 may be improved.

Fig. 5 is an enlarged schematic view of Q in fig. 4.

In some alternative embodiments, referring to fig. 4 and 5, the baffle plate assembly 20 further includes two second shielding plates 25, the two second shielding plates 25 are disposed on two sides of the second baffle plate 23 in the thickness direction, and the second shielding plates 25 are movably connected with the second baffle plate 23. Wherein the separator assembly 20 is configured such that the first shielding plate 24 and the second shielding plate 25 are moved toward each other such that at least a portion of the first shielding plate 24 is located between the two second shielding plates 25 when the battery cells are thermally out of control.

Alternatively, the thicknesses of the first separator 22 and the second separator 23 may be different, and the size of the recess 221 of the first separator 22 in the thickness direction of the first separator 22 may be the same as the thickness size of the second separator 23. Alternatively, the dimension of the recess 221 in the thickness direction of the first barrier 22 may be the same as the thickness of the first shielding plate 24. Alternatively, the dimension from the inner side wall of the recess 221 of the first separator 22 to the outer surface on the side close to the inner side wall thereof in the thickness direction of the first separator 22 may be the same as the thickness dimension of the second shielding plate 25. That is, the recess 221 of the first separator 22 separates the first separator 22 to form two blocking portions 222, and the size of the blocking portions 222 in the thickness direction of the first separator 22 is the same as the thickness size of the second shielding plate 25.

Alternatively, the second shielding plate 25 and the blocking portion 222 are disposed opposite to each other in the second direction Y.

Alternatively, grooves extending in the second direction Y may be provided on both sides of the second separator 23 in the thickness direction, and the second shielding plate 25 is provided with a sliding structure that matches the grooves, at least part of the sliding structure being located in the grooves.

The first shielding plate 24 and the second shielding plate 25 are moved toward each other, and "toward each other" herein means that the first shielding plate 24 and the second shielding plate 25 are arranged at intervals in a single direction, and as an example, the first shielding plate 24 and the second shielding plate 25 are arranged at intervals in a second direction Y, the first shielding plate 24 is moved in a direction approaching the second shielding plate 25 in the second direction Y, and the second shielding plate 25 is moved in a direction approaching the first shielding plate 24 in the second direction Y.

In these alternative embodiments, when thermal runaway occurs in the battery cell, the first shielding plate 24 and the second shielding plate 25 are moved toward each other until at least part of the first shielding plate 24 is located between the two second shielding plates 25, thereby closing the communication channel 21 to separate the battery cell in which thermal runaway does not occur from the battery cell in which thermal runaway does not occur. By providing the first shielding plate 24 and the second shielding plate 25, the first shielding plate 24 and the second shielding plate 25 can bear larger impact strength, the shielding strength of the shielding area formed by the first shielding plate 24 and the second shielding plate 25 is improved, and the possibility that the first shielding plate 24 and the second shielding plate 25 cannot completely shield the communication channel 21 under the impact of the discharged materials is reduced.

In some alternative embodiments, referring to fig. 1 to 4, the battery formation device further includes a sensing device 30, and each accommodating cavity C1 is provided with the sensing device 30, where the sensing device 30 is used to monitor thermal runaway information of the battery cell.

The sensing device 30 is used for monitoring thermal runaway information of the battery cell, and when the thermal runaway of the battery cell occurs, the temperature of the battery cell is abnormal, and the battery cell also discharges emissions and gas, and the thermal runaway information includes at least one of a threshold temperature, a threshold smoke, and a predetermined gas.

Alternatively, the sensing means 30 provided in each receiving chamber C1 may be the same, but may be different.

In these alternative embodiments, by providing the sensing device 30, when the sensing device 30 senses the thermal runaway information, the first shielding plate 24 is controlled to close the communication channel 21 so as to separate the battery cell with thermal runaway from the battery cell without thermal runaway, so that the timeliness of closing the communication channel 21 is improved, and the automation of the battery formation device is improved.

In some alternative embodiments, referring to fig. 1-4, sensing device 30 comprises at least one of a smoke sensing device 30, a temperature sensing device 30, and a gas sensing device 31.

In some examples, each of the accommodation chambers C1 may be provided therein with a smoke sensing device 30, a temperature sensing device 30, and a gas sensing device 31. In other examples, each of the accommodation chambers C1 may be provided therein with one or a combination of several of the smoke sensing device 30, the temperature sensing device 30, and the gas sensing device 31.

Alternatively, the temperature sensing device 30 may include an ambient temperature sensing device 30 and a battery cell temperature sensing device 30, where the sensing portion of the ambient temperature sensing device 30 may be disposed at an interval from the battery cell, and the sensing portion of the battery cell temperature sensing device 30 may be disposed in contact with the battery cell, for example, in contact with a positive electrode terminal and a negative electrode terminal of the battery cell.

In these alternative embodiments, the reliability of the battery formation device is improved by providing a plurality of sensing devices 30 to improve the accuracy of the sensing device 30 in determining the thermal runaway battery.

In some alternative embodiments, referring to fig. 4, the carrying cabinet 10 includes a forming chamber C2, the forming chamber C2 includes at least two accommodating chambers C1 arranged along the first direction X, and the forming chamber C2 is provided with a gas sensing device 31.

Alternatively, the formation chamber C2 includes two or more accommodation chambers C1 arranged in the first direction X. Alternatively, the number of formation chambers C2 may include a plurality of formation chambers C2 arranged side by side in the second direction Y.

Alternatively, the gas sensing device 31 may comprise a carbon monoxide sensing device 30.

Optionally, the plurality of accommodating chambers C1 included in the forming chamber C2 are all disposed in communication with each other in the forming process.

In these alternative embodiments, the manufacturing cost of the battery formation device is reduced and the manufacturing cost of the battery cells is reduced by reducing the number of arrangements of the gas sensing devices 31.

In some alternative embodiments, referring to fig. 1, the battery formation device further includes a connecting member 40 and a clamping member 50, each accommodating cavity C1 is provided with the connecting member 40 and the clamping member 50, the clamping member 50 is used for clamping the battery cell, a sensing device 30 is disposed on a side of the connecting member 40 facing the clamping member 50, and the connecting member 40 is movably disposed along a direction facing or away from the clamping member 50.

Alternatively, the clamping member 50 may include a clamp, and the clamping member 50 is used to clamp the battery cell to fix and press the battery cell.

Alternatively, the connecting member 40 and the holding member 50 may be disposed opposite to each other, and a side of the connecting member 40 facing the holding member 50 may be a flat surface for connecting the sensing device 30, and a side of the connecting member 40 facing away from the holding member 50 may be connected to the carrying case 10. The connecting member 40 is movably disposed in a direction toward or away from the holding member 50, and the structure of the connecting member 40 connected with the carrying case 10 may be a telescopic structure, which can move the connecting member 40 in a direction toward or away from the holding member 50.

In other examples, the side of the connector 40 facing the holder 50 may also be provided with probes that are electrically connected to the battery cells that are required in the battery singulation process.

In these alternative embodiments, by the above arrangement, the relative distance between the sensing device 30 and the battery cell can be adjusted, so that the battery formation device is suitable for battery cells of different specifications, and the manufacturing cost of the battery cell is reduced.

In some alternative embodiments, referring to fig. 1, the battery formation device further includes a fire protection device 60, each of the accommodating chambers C1 is provided with the fire protection device 60, the fire protection device 60 is configured to spray fire protection gas in a first preset condition, and spray fire protection liquid or solid in a second preset condition, the first preset condition includes that the various sensing devices 30 detect thermal runaway information, and the second preset condition includes that the sensing devices 30 detect thermal runaway information after the fire protection device 60 sprays fire protection gas.

Alternatively, the fire protection device 60 may include a fire protection spray nozzle, and the fire protection device 60 may spray fire protection materials such as fire protection gas, fire protection liquid, and fire protection solid. Alternatively, the fire spray nozzles may be fine water mist with a diameter of coverage of 0.5m-2m, for example, a diameter of coverage of 0.5m, 1m, 1.5m or 2m.

As can be seen from the foregoing, each accommodating chamber C1 may be provided with a smoke sensing device 30, a temperature sensing device 30 and a gas sensing device 31, and in the formation process of the battery cells, when the smoke sensing device 30 detects a threshold smoke value, the separator assembly 20 may be controlled by a control program to close the communication channel 21 so as to separate the battery cells that are not thermally out of control from the battery cells that are not thermally out of control. When the first preset condition is that any two of the smoke sensing device 30, the temperature sensing device 30 and the gas sensing device 31 detect the preset threshold value, the control program controls the fire fighting device 60 to spray the fire fighting gas. When the thermal runaway problem is still uncontrollable after spraying the fire fighting gas, the second preset condition is satisfied, and at this time, the sensing device 30 can still detect the thermal runaway information, and the control program controls the fire fighting device 60 to spray the fire fighting liquid or solid, thereby realizing fire extinguishing. Alternatively, the carrying cabinet 10 may be provided with a liquid outlet 4, and the sprayed fire fighting liquid may be discharged through the liquid outlet 4. Alternatively, when the thermal runaway battery cell and the battery cell where the thermal runaway does not occur are partitioned, the heating device of the battery formation device may be turned off to reduce the temperature in the accommodating chamber C1.

In these alternative embodiments, the impact of thermal runaway cells on cells, other equipment, and personnel that do not experience thermal runaway cells is reduced, improving the reliability of the cells in the formation process.

In some alternative embodiments, the side of the connecting member 40 facing the clamping member 50 is provided with an extension groove extending at least along the first direction X, at least part of the fire-fighting device 60 is disposed in the extension groove, and the fire-fighting device 60 is slidably connected to the extension groove.

The extension groove may be formed by recessing a surface of the connection member 40 toward the side of the holder 50. Alternatively, the extension groove may be provided to extend in the first direction X. Or the extension groove may be extended in a plurality of directions. Or the extension groove may be annular in projected shape at the connection member 40.

Alternatively, the fire protection device 60 may include a connection structure disposed within the extension tank.

In these alternative embodiments, the fire-fighting device 60 and the extension groove are slidably connected, so that the fire-fighting device 60 can adjust the spraying area when spraying fire-extinguishing materials, so as to achieve the important spraying effect on the fire area, thereby improving the fire-extinguishing efficiency and the reliability of the battery formation device.

In a second aspect, an embodiment of the present application provides a battery formation system, including a battery formation device and a negative pressure device in any of the foregoing embodiments.

It should be noted that, the battery formation system provided in the embodiment of the present application has the beneficial effects of the battery formation device in any of the foregoing embodiments, and the specific content refers to the foregoing description of the beneficial effects of the battery formation device, which is not repeated herein.

Referring to fig. 1-4, a battery formation apparatus includes a load-bearing cabinet 10 and a separator assembly 20 according to some embodiments of the present application. The carrying case 10 includes a plurality of accommodating chambers C1, at least portions of the plurality of accommodating chambers C1 being arranged side by side in the first direction X, the accommodating chambers C1 being for accommodating the battery cells. The partition plate assembly 20 is provided with the partition plate assembly 20 between two adjacent accommodating chambers C1 along the first direction X, the partition plate assembly 20 is provided with the communication channel 21, the communication channel 21 communicates with the two adjacent accommodating chambers C1, and the partition plate assembly 20 is configured to close the communication channel 21 when the battery cells are thermally out of control.

The partition plate assembly 20 includes a first partition plate 22, a second partition plate 23, and a first shielding plate 24, a communication passage 21 is formed between the first partition plate 22 and the second partition plate 23, the first partition plate 22 is provided with a recess 221, and at least a portion of the first shielding plate 24 is disposed in the recess 221. The first partition 22 is movably connected to a first shutter 24, and the first shutter 24 is used to close or open the communication passage 21.

The battery formation device further comprises a sensing device 30 and a fire protection device 60, wherein the sensing device 30 is arranged in each accommodating cavity C1, and the sensing device 30 is used for monitoring thermal runaway information of the battery monomers. The sensing means 30 comprises at least one of smoke sensing means 30, temperature sensing means 30 and gas sensing means 31. The fire protection device 60 is used to spray fire protection material.

The battery formation device further comprises a connecting piece 40 and a clamping piece 50, the connecting piece 40 and the clamping piece 50 are arranged in each accommodating cavity C1, the clamping piece 50 is used for clamping battery cells, one side, facing the clamping piece 50, of the connecting piece 40 is provided with the sensing device 30, and the connecting piece 40 is movably arranged along the direction facing or deviating from the clamping piece 50.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application 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 scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application, and are intended to be included within the scope of the appended claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (11)

1. A battery formation apparatus, comprising:

The bearing cabinet body comprises a plurality of accommodating cavities, at least part of the accommodating cavities are arranged side by side along a first direction, and the accommodating cavities are used for accommodating battery cells;

The separator assembly is arranged between two adjacent accommodating cavities along the first direction, the separator assembly is provided with a communication channel, the communication channel is communicated with the two adjacent accommodating cavities, and the separator assembly is configured to close the communication channel when the battery cell body is out of control.

2. The battery formation device according to claim 1, wherein the separator assembly includes a first separator, a second separator, and a first shielding plate, the communication passage is formed between the first separator and the second separator, the first separator is movably connected to the first shielding plate, and the first shielding plate is used for closing or opening the communication passage.

3. The battery formation apparatus according to claim 2, wherein the first separator is provided with a recess, and at least part of the first shielding plate is provided in the recess.

4. The battery formation apparatus according to claim 3, wherein the separator assembly further comprises two second shielding plates, the two second shielding plates being provided separately on both sides of the second separator in the thickness direction, the second shielding plates being movably connected with the second separator;

Wherein the separator assembly is configured such that the first and second shielding plates move toward each other such that at least a portion of the first shielding plate is located between the two second shielding plates when the battery cell is thermally out of control.

5. The battery formation device of claim 1, further comprising sensing devices disposed within each of the receiving chambers, the sensing devices configured to monitor thermal runaway information of the battery cells.

6. The battery formation device of claim 5, wherein the sensing device comprises at least one of a smoke sensing device, a temperature sensing device, and a gas sensing device.

7. The battery formation device of claim 6, wherein the carrier cabinet includes a formation chamber including at least two of the receiving chambers arranged in the first direction, the formation chamber being provided with one of the gas sensing devices.

8. The battery formation device according to claim 6, further comprising a connecting member and a clamping member, wherein each of the accommodating chambers is provided with the connecting member and the clamping member, the clamping member is configured to clamp the battery cell, the sensing device is disposed on a side of the connecting member facing the clamping member, and the connecting member is disposed movably in a direction facing or facing away from the clamping member.

9. The battery formation device according to claim 8, further comprising a fire control device, wherein each of the accommodation chambers is provided therein with the fire control device for spraying fire control gas in a first preset condition, spraying fire control liquid or solid in a second preset condition, the first preset condition including a plurality of kinds of information of thermal runaway detected by the sensing device, and the second preset condition including information of thermal runaway detected by the sensing device after the fire control device sprays fire control gas.

10. The battery formation device according to claim 9, wherein an extension groove is provided on a side of the connecting member facing the clamping member, the extension groove is provided to extend at least in the first direction, at least a portion of the fire fighting device is provided in the extension groove, and the fire fighting device is slidably connected to the extension groove.

11. A battery formation system comprising the battery formation apparatus according to any one of claims 1 to 10;

And a negative pressure device.