Tape application method for tab, battery, and tape application apparatus for tab

Abstract

The present application relates to the technical field of batteries, and discloses a tape application method for a tab, a battery, and a tape application apparatus for a tab. The tape application method for a tab can enhance the bonding reliability between adhesive tapes and tabs. The tape application method for a tab comprises: placing a bare cell on a tape application tool, and enabling a tape application pending surface of a tab on the bare cell to be located at a position corresponding to an unwinding device, wherein the unwinding device can carry an adhesive tape; controlling the unwinding device to place the adhesive tape at a position corresponding to the tape application pending surface; and controlling an airflow generator to generate a pressing airflow towards the tape application pending surface for the adhesive tape, so that the adhesive tape is bonded to the tape application pending surface under the action of the pressing airflow. The tape application method for a tab provided in the present application is used for applying adhesive tapes onto tabs of bare cells.

Description

Tab pasting method, battery and tab pasting device

[0001] Cross-reference to Related Applications

[0002] The present disclosure is based on and claims priority to Chinese Patent Application No. 202410823531.4, filed on June 24, 2024, entitled “Tab pasting method, battery and tab pasting device”, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of batteries, and in particular to a tab pasting method, a battery and a tab pasting device. BACKGROUND

[0004] New energy batteries are increasingly widely used in life and industry. For example, new energy vehicles equipped with batteries have been widely used, and batteries are also increasingly used in the energy storage field and the like.

[0005] During production and use, the bare battery cell in the battery may vibrate or collide, and the like, and there is a risk that the tab on the bare battery cell will move or even break, which may cause a short circuit or battery failure. In related technologies, a tape is pasted on the tab to increase the strength of the tab by using the tape to increase the ability of the tab to withstand external forces, thereby effectively reducing the risk of deformation or loosening of the tab.

[0006] In related technologies, the tape is pasted on the tab by a mechanical force application method. For example, the tape is tightly bonded on the tab by a rolling method, a pressing method, or the like. However, the tab is usually not a complete planar structure, and some tabs have curved portions or portions with bends. For such tabs, the mechanical force application method of rolling or pressing cannot make the tape well adhere to each portion of the tab.

[0007] SUMMARY

[0008] The present disclosure provides a tab pasting method, a tab pasting device and a battery production line, which can improve the reliability of the bonding of the adhesive tape and the tab.

[0009] A first aspect of the present disclosure provides a tab pasting method, the tab pasting method comprising: placing a bare battery cell on a pasting tool, and placing a pasting surface of a tab on the bare battery cell in a position corresponding to a winding-off device, the winding-off device being capable of carrying a pasting adhesive; controlling the winding-off device to place the pasting adhesive in a position corresponding to the pasting surface; and controlling a gas flow generator to generate a pressure bonding gas flow toward the pasting surface to cause the pasting adhesive to bond with the pasting surface under the action of the pressure bonding gas flow.

[0010] The method for pasting the tab of the bare battery cell provided by the present disclosure can position and fix the bare battery cell through the pasting tool, and facilitate the movement of the adhesive tape carried by the unwinding device to the position corresponding to the pasting surface. Meanwhile, the airflow generator is controlled to generate the pressing airflow of the adhesive tape towards the pasting surface, and the pressing airflow can be used to apply the force of the adhesive tape towards the pasting surface, so that the adhesive tape abuts against the pasting surface. Since the airflow has the characteristic of free flow, the pressing airflow can be used to apply the force to each part of the adhesive tape corresponding to the pasting surface. In this way, the flow rate of the pressing airflow can be controlled to make each part of the adhesive tape receive a large enough force, so that each part of the adhesive tape abuts against the pasting surface, thereby improving the reliability of the adhesion between the adhesive tape and the tab.

[0011] In a possible implementation of the present disclosure, before the step of controlling the airflow generator to generate the pressing airflow of the adhesive tape towards the pasting surface, the method for pasting the tab of the bare battery cell further includes: controlling the airflow generator to generate the pressing airflow, and simultaneously controlling the heating source device to heat the pressing airflow, so that the temperature of the heated pressing airflow is greater than or equal to the melting temperature of the adhesive tape.

[0012] In the technical solution of the present disclosure, the heating source device is controlled to heat the pressing airflow generated by the airflow generator, so that the temperature of the pressing airflow is increased to the melting point range of the adhesive tape. In this way, the pressing airflow can not only apply the force of the adhesive tape towards the pasting surface, but also melt the adhesive tape, which can reduce the step of heating the adhesive tape through a dedicated heating device, and is beneficial to improving the efficiency of the adhesion between the adhesive tape and the pasting surface.

[0013] In a possible implementation of the present disclosure, before the step of controlling the airflow generator to generate the pressing airflow of the adhesive tape towards the pasting surface, the method for pasting the tab of the bare battery cell further includes: heating at least one part of the to-be-adhered part of the adhesive tape corresponding to the pasting surface, so that the at least one part of the to-be-adhered part reaches the melting state capable of adhering to the pasting surface.

[0014] In the technical solution of the present disclosure, at least one part of the to-be-adhered part is heated before the pressing airflow is generated, so that the positioning of the at least one part of the to-be-adhered part and the bare battery cell is realized, or the preliminary adhesion of the to-be-adhered part and the pasting surface of the tab is realized. In this way, the risk of mispositioning between the to-be-adhered part and the tab can be reduced in the subsequent process of generating the pressing airflow by the airflow generator, which is beneficial to improving the positional accuracy of the adhesion between the adhesive tape and the tab. Meanwhile, the energy consumption of heating the adhesive tape through the pressing airflow can be saved.

[0015] In a possible implementation manner of the present disclosure, the control of the air flow generator to generate the pressing air flow to the adhesive towards the adhesive surface comprises: controlling the air flow generator to generate the pressing air flow to the positioning part in the to-be-bonded part of the adhesive, so as to bond the positioning part to the surface of the bare battery cell and / or bond the positioning part to the edge part of the adhesive surface; and controlling the air flow generator to generate the pressing air flow to the to-be-bonded part.

[0016] In the technical solution of the present disclosure, since the air flow generator is controlled to generate the pressing air flow to the positioning part in the to-be-bonded part of the adhesive first, the positioning part in the to-be-bonded part can be bonded to the bare battery cell or the adhesive surface first, so that the positioning of the to-be-bonded part can be realized, and the position accuracy of the bonding of the to-be-bonded part to the adhesive surface can be improved. Moreover, the pressing air flow is generated to the to-be-bonded part after the positioning of the to-be-bonded part is completed, so that each part of the to-be-bonded part can be tightly bonded to the bare battery cell and / or the adhesive surface.

[0017] In a possible implementation manner of the present disclosure, the control of the air flow generator to generate the pressing air flow to the adhesive towards the adhesive surface comprises: controlling the air flow generator to move along the extension direction of the adhesive surface, so that the pressing air flow flows continuously from one end of the adhesive surface to the other end of the adhesive surface; or controlling the air flow generator to move back and forth along the extension direction of the adhesive surface, so that the pressing air flow flows at least twice between the two ends of the adhesive surface.

[0018] In the technical solution of the present disclosure, since the air flow generator is controlled to move along the extension direction of the adhesive surface, the pressing air flow generated by the air flow generator can exert a force on each part of the to-be-bonded part towards the adhesive surface, so that the reliability of the bonding of the to-be-bonded part to the adhesive surface can be improved. Moreover, in the case that the to-be-bonded part needs to be heated, the air flow generator can be controlled to move back and forth along the extension direction of the adhesive surface, so that the to-be-bonded part can be heated at least twice, so that the to-be-bonded part can absorb enough heat to melt, and then the to-be-bonded part can be tightly bonded to the adhesive surface.

[0019] In a possible implementation manner of the present disclosure, the control of the unwinding device to place the adhesive in the position corresponding to the adhesive surface comprises: controlling the unwinding device to drive the adhesive to move towards the adhesive surface until the to-be-bonded part of the adhesive moves to the position corresponding to the positioning mechanism; and controlling the positioning mechanism to be connected to the to-be-bonded part, so as to limit the to-be-bonded part in the position corresponding to the adhesive surface.

[0020] In the technical solution of the present disclosure, the control of the unwinding device drives the adhesive tape to move towards the direction close to the adhesive surface, so that the to-be-bonded part of the adhesive tape corresponds to the adhesive surface of the tab. The control of the positioning mechanism is connected to the to-be-bonded part, so that the positioning mechanism limits the position of the to-be-bonded part relative to the adhesive surface, which is beneficial to improve the position accuracy of the to-be-bonded part and the adhesive surface.

[0021] The second aspect of the present disclosure provides a battery, comprising: a bare cell and an adhesive tape; wherein the bare cell has a tab; the adhesive tape is bonded to the adhesive surface of the tab; and the adhesive tape is bonded to the adhesive surface by using the tab adhesive method provided in any one of the first aspect.

[0022] The battery provided by the present disclosure can control the flow rate of the pressure air flow to make each part of the adhesive tape receive a large enough force, so that each part of the adhesive tape is in abutment and bonding with the adhesive surface of the tab, thereby improving the bonding reliability of the adhesive tape and the tab, and improving the safety and stability of the battery.

[0023] The third aspect of the present disclosure provides a tab adhesive equipment, comprising: an adhesive tool, an unwinding device and an air flow generator; wherein the adhesive tool has a cell bearing part, which is matched with the bare cell and used for bearing the bare cell; the unwinding device is arranged adjacent to the adhesive tool; the unwinding device has an adhesive tape bearing part and an adhesive tape driving part, the adhesive tape bearing part is used for bearing the adhesive tape, and the adhesive tape driving part is used for driving the adhesive tape to move towards the direction close to the bare cell; and the air flow generator is arranged at a position corresponding to the cell bearing part and used for generating a pressure air flow.

[0024] The tab adhesive equipment provided by the present disclosure can support the bare cell by the cell bearing part of the adhesive tool and position the bare cell. The unwinding device is arranged adjacent to the adhesive tool, the adhesive tape bearing part of the unwinding device can place the adhesive tape to be used, and the adhesive tape driving part of the unwinding device can drive the adhesive tape to move, so that the adhesive tape extends to a position corresponding to the tab on the bare cell. Meanwhile, the air flow generator is arranged at a position corresponding to the cell bearing part, which can control the air flow generator to generate a pressure air flow to the adhesive tape adjacent to the tab. Under the action of the pressure air flow, the adhesive tape can abut the adhesive surface of the tab. In this way, the flow rate of the pressure air flow can be controlled to make each part of the adhesive tape receive a large enough force, so that each part of the adhesive tape abuts and bonds with the adhesive surface, thereby improving the bonding reliability of the adhesive tape and the tab.

[0025] In a possible implementation manner of the present disclosure, the tab gluing device further comprises a heat source device, and the heat source device is arranged on a flow path of the crimping airflow generated by the airflow generator and used for heating the crimping airflow.

[0026] In the technical scheme of the present disclosure, since the heat source device is arranged in the tab gluing device and is arranged on the flow path of the crimping airflow generated by the airflow generator, the crimping airflow generated by the airflow generator can be heated by the heat source device, so that the temperature of the crimping airflow can reach the melting point of the adhesive. In this way, not only can the adhesive be melted by the crimping airflow, but also the adhesive can be subjected to the force towards the tab by the crimping airflow, and then the adhesive can be reliably bonded to the tab.

[0027] In a possible implementation manner of the present disclosure, the tab gluing device further comprises a driving mechanism, and the airflow generator is mounted on the driving mechanism and used for driving the airflow generator to move relative to the tab of the bare battery cell.

[0028] In the technical scheme of the present disclosure, since the airflow generator is mounted on the driving mechanism, the airflow generator can be driven to move relative to the tab of the bare battery cell by the driving mechanism, so that the crimping airflow can be blown to each part of the adhesive opposite to the tab, the force towards the tab can be applied to each part of the adhesive corresponding to the tab, and then each part of the adhesive can be closely bonded to the tab gluing surface of the tab.

[0029] In a possible implementation manner of the present disclosure, the tab gluing device further comprises a positioning mechanism, and the positioning mechanism comprises a positioning driving member and a positioning member. The positioning driving member is mounted at a position corresponding to the battery cell bearing portion, and the positioning member is arranged on the positioning driving member. The positioning driving member is used for driving the positioning member to move relative to the battery cell bearing portion, so that the positioning member is connected to the adhesive and limits the position of the adhesive relative to the tab of the bare battery cell.

[0030] In the technical scheme of the present disclosure, since the positioning driving member is arranged at a position opposite to the battery cell bearing portion and the positioning member is mounted on the positioning driving member, the positioning member can be driven to move towards or away from the bare battery cell located on the battery cell bearing portion by the positioning driving member, so that the positioning member can be connected to the adhesive. Then, the position of the adhesive relative to the tab can be limited by the positioning member to realize the positioning of the adhesive relative to the tab, which is beneficial to improving the position accuracy of the adhesive bonded to the tab. BRIEF DESCRIPTION OF DRAWINGS

[0031] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments with reference made to the accompanying drawings. The drawings provided herein are for illustrative purposes only and, therefore, should not be considered to be limiting in any way. Like reference characters often refer to parts throughout the drawings. In the drawings:

[0032] Fig. 1 is a schematic diagram of a tab adhesive provided by the present disclosure;

[0033] Fig. 2 is a schematic diagram of a tab adhesive provided by the present disclosure;

[0034] Fig. 3 is a schematic diagram of a tab adhesive method provided by the present disclosure;

[0035] Fig. 4 is a schematic diagram of a tab adhesive method provided by the present disclosure;

[0036] Fig. 5 is a schematic diagram of a tab adhesive method provided by the present disclosure;

[0037] Fig. 6 is a schematic diagram of a tab adhesive method provided by the present disclosure;

[0038] Fig. 7 is a schematic diagram of a tab adhesive method provided by the present disclosure;

[0039] Fig. 8 is a schematic diagram of a tab adhesive method provided by the present disclosure;

[0040] Fig. 9 is a schematic diagram of a tab adhesive method provided by the present disclosure;

[0041] Fig. 10 is a schematic diagram of a tab adhesive method provided by the present disclosure;

[0042] Fig. 11 is a schematic diagram of a tab adhesive method provided by the present disclosure;

[0043] Fig. 12 is a schematic diagram of a tab adhesive device provided by the present disclosure.

[0044] Reference signs: 1 - bare battery cell; 11 - tab; 2 - adapter plate; 3 - adhesive; 4 - pressure airflow; 5 - adhesive tooling; 6 - unwinding device; 61 - adhesive bearing part; 62 - adhesive driving part; 7 - airflow generator; 81 - heat source device; 82 - driving mechanism; 9 - positioning mechanism; 91 - positioning driving part; 92 - positioning part; 10 - base body. DETAILED DESCRIPTION

[0045] The embodiments of the technical solutions of the present disclosure will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present disclosure, and therefore only serve as examples, and cannot limit the protection scope of the present disclosure.

[0046] Unless otherwise defined, 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 disclosure belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure; the use of the terms "including," "comprising," or "having" and variations thereof herein is intended to be broad and encompass the terms "consisting of" and "consisting essentially of" and variations thereof. Unless otherwise noted, the terms "including" and "comprising" are open-ended and do not exclude the presence of unrecited elements or limitations.

[0047] In the description of the embodiments of the disclosure, the technical terms "first", "second", "third" and the like are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the disclosure, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0048] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the disclosure. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to each other. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0049] In the description of the embodiments of the disclosure, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after it.

[0050] In the description of the embodiments of the disclosure, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the disclosure and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed in a particular orientation, be operated or used, and therefore cannot be understood as a limitation on the embodiments of the disclosure.

[0051] In the description of the embodiments of the present disclosure, unless explicitly defined and limited otherwise, the technical terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0052] In the description of the embodiments of the present disclosure, unless explicitly defined and limited otherwise, the technical term "contacting" should be understood in a broad sense, which can be direct contact or contact through an intermediate medium layer, and can be contact between two contacting objects without interaction force, or contact between two contacting objects with interaction force.

[0053] At present, new energy batteries are more and more widely used in life and industry. New energy batteries are not only applied to energy storage power supply systems such as hydroelectric, thermal, wind and solar power stations, but also widely used in electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also increasing.

[0054] The battery produces vibration and collision during production and use, which will cause the tab on the bare cell to be subjected to external force, and the tab may move, deform, or even break under the action of external force. If no strengthening measures are taken for the tab, the tab may contact other devices during movement and deformation, causing short circuit failure. And when connecting the tab with other devices, the tab needs to be subjected to a certain tensioning force. If the tensioning force is uneven or too small, the tab may deform or loosen. This will cause the electrical performance of the battery to decrease, affecting the life and performance of the battery. The strength and adhesion of the adhesive tape can effectively increase the strength of the tab by pasting the adhesive tape on the tab, and the tab can also withstand a certain external force, effectively reducing the problem of tab deformation or loosening, which is beneficial to improve the stability and performance of the battery.

[0055] Referring to FIG. 1 and FIG. 2, both of which show a schematic diagram of the tab gluing provided by the present disclosure. In the related art, the tab 11 of the bare battery cell 1 is provided with adhesive tape by mechanical gluing. For example, the adhesive tape 3 is pressed and adhered on the tab 11 by means of roller pressing, block pressing, etc. However, as shown in FIG. 1 and FIG. 2, the tab 11 usually has an arc-shaped portion or a portion with a bend. When the adhesive tape 3 is adhered on the curved surface and the corner portion of the tab 11 by means of roller pressing, block pressing, etc., it is difficult to press and adhere the adhesive tape 3 on every portion of the tab 11 due to insufficient stroke of the adhesive tape 3, etc., that is, there is an unadhered air bubble area between the tab 11 and the adhesive tape 3. Or it causes the redundant amount of the tab 11 to be too small, which is easy to tear to the welding position between the tab 11 and the adapter piece 2, and causes the tab 11 to crack in the subsequent assembly process. Therefore, a tab gluing method and tab gluing device that can improve the adhesion reliability of the adhesive tape and the tab 11 are needed.

[0056] The tab gluing method provided by the embodiments of the present disclosure can be executed by a processor of a computer device. The computer device can be a server, a notebook computer, a tablet computer, a desktop computer, a mobile device (such as a mobile phone, a portable video player, a personal digital assistant), etc.

[0057] Referring to FIG. 3, which shows a schematic diagram of a tab gluing method provided by the present disclosure, the method can be executed by a processor of a computer device. The steps shown in FIG. 1 will be described in combination.

[0058] S101, place the bare battery cell on the gluing tool, and place the gluing surface of the tab on the bare battery cell in a position corresponding to the unwinding device, and the unwinding device can carry the adhesive tape.

[0059] In some embodiments, the bare battery cell is an electrochemical cell including a positive electrode, a negative electrode, and a separator in a battery. During the charging and discharging process of the battery cell, active ions (such as lithium ions) are embedded and extracted between the positive electrode and the negative electrode. The separator is arranged between the positive electrode and the negative electrode, which can prevent the positive and negative electrodes from short-circuiting, and at the same time allow the active ions to pass through. The tab can be arranged on the bare battery cell, and the tab can conduct current from the bare battery cell. For example, the positive tab is arranged on the positive electrode, and the negative tab is arranged on the negative electrode.

[0060] During the manufacturing process of the bare battery cell, adhesive tape needs to be arranged on the tab of the bare battery cell away from the body of the bare battery cell, that is, the adhesive tape is adhered on the gluing surface of the tab, so as to achieve the insulation of the tab through the adhesive tape and enhance the strength of the tab.

[0061] In some embodiments, during the process of setting the adhesive on the tab of the bare battery cell, an adhesive setting tool can be used to support and position the bare battery cell and the tab. For example, a clamping mechanism matching the bare battery cell can be set on the adhesive setting tool to clamp and fix the bare battery cell on the adhesive setting tool. At the same time, the adhesive surface of the tab needs to face the unwinding device so as to place the adhesive placed on the unwinding device at a position opposite to the adhesive surface. The unwinding device can carry and place the adhesive, and the adhesive can be a long strip shape matching the width of the tab, and the long strip-shaped adhesive can be wound on the unwinding device.

[0062] S102, control the unwinding device to place the adhesive at a position corresponding to the adhesive surface.

[0063] In some embodiments, after the bare battery cell is placed on the adhesive setting tool and the tab is in the correct position, the unwinding device can be controlled to move the adhesive to a position corresponding to the adhesive surface, that is, to place a part of the adhesive adjacent to the adhesive surface.

[0064] For example, the traction mechanism in the unwinding device can be controlled to extend the wound adhesive to the position of the adhesive surface. Alternatively, the cutting structure in the unwinding device can be controlled to cut a section of adhesive matching the length of the adhesive surface, and then a mechanical hand or other mechanism can be controlled to move the cut part of the adhesive to the position of the adhesive surface.

[0065] S103, control the airflow generator to generate a pressing airflow towards the adhesive surface to make the adhesive adhere to the adhesive surface under the action of the pressing airflow.

[0066] In some embodiments, after the bare battery cell and the adhesive are both placed in the correct position, the adhesive needs to be adhered to the adhesive surface. Therefore, an action force needs to be applied to the to-be-bonded part of the adhesive corresponding to the adhesive surface to make the to-be-bonded part contact and adhere to the adhesive surface.

[0067] In some embodiments, referring to FIG. 4, FIG. 4 shows a schematic diagram I of the tab adhesive setting method provided by the present disclosure. As shown in FIG. 4, a pressing airflow 4 with a high flow rate can be blown to the to-be-bonded part, and at the same time that the pressing airflow 4 is blocked by the to-be-bonded part, the pressing airflow 4 also applies an action force to the to-be-bonded part, so as to move the to-be-bonded part by the pressing airflow 4.

[0068] For example, in the case that the to-be-bonded part has a back adhesive, the air flow generator can be controlled to generate a pressure bonding air flow with a certain flow rate, and the pressure bonding air flow can flow along the to-be-bonded part towards the adhesive surface. In this way, after the pressure bonding air flow contacts the to-be-bonded part, the pressure bonding air flow can exert a force of similar size on each region of the to-be-bonded part, and the back adhesive of each region of the to-be-bonded part can be bonded to the adhesive surface under the flexible force generated by the pressure bonding air flow.

[0069] For another example, in the case that the to-be-bonded part is in a solid state, the air flow generator can be controlled to generate a pressure bonding air flow with a high temperature, and after the hot air flow contacts the to-be-bonded part, the to-be-bonded part can be heated, so that the to-be-bonded part can be melted. After melting, the to-be-bonded part can be tightly bonded to the adhesive surface under the force of the pressure bonding air flow, so that the to-be-bonded part is bonded to the adhesive surface. Compared with the rigid pressure applied to the adhesive by a pressure roller or the like, which cannot change direction according to the shape of the adhesive, in the embodiments of the present disclosure, the flexible force applied to the adhesive by the pressure bonding air flow can change direction according to the shape of the adhesive, so that the risk of damage to the tab during bonding of the adhesive to the adhesive surface can be reduced.

[0070] For another example, the adhesive can be selected to be a material in a semi-transparent or transparent state in a solidified state. In this way, after the gluing of the tab is completed, the topography of the tab can be observed through the adhesive, which facilitates the topography detection of the tab after gluing.

[0071] The tab gluing method provided by the embodiments of the present disclosure can position and fix the bare battery cell through the gluing tool, and facilitate the movement of the adhesive carried on the unwinding device to a position corresponding to the adhesive surface. Meanwhile, the air flow generator can be controlled to generate a pressure bonding air flow towards the adhesive surface, and the pressure bonding air flow can be used to exert a force on the adhesive towards the adhesive surface, so that the adhesive can abut against the adhesive surface. Since the air flow has the characteristic of free flow, the pressure bonding air flow can exert a force on each part of the adhesive corresponding to the adhesive surface. In this way, the flow rate of the pressure bonding air flow can be controlled to make each part of the adhesive receive a force large enough to abut against each part of the adhesive surface, thereby improving the reliability of the bonding of the adhesive to the tab.

[0072] Referring to FIG. 5, FIG. 5 shows a flowchart of a second tab gluing method provided by the present disclosure. As shown in FIG. 5, based on FIG. 3, the method further includes step S201, which will be described in combination with the steps shown in FIG. 5.

[0073] S201, control the airflow generator to generate the pressurized airflow, and control the heat source device to heat the pressurized airflow, so that the temperature of the heated pressurized airflow is greater than or equal to the melting temperature of the adhesive.

[0074] In some embodiments, the adhesive can be an adhesive tape that is solid at room temperature (e.g., 25 degrees Celsius), such as an Ethylene-Vinyl Acetate Copolymer (EVA) adhesive tape. Such an adhesive tape can be deformed to abut the adhesive surface under the force of the pressurized airflow, but the adhesive tape is in a solid state and cannot be bonded to the adhesive surface. The adhesive tape can be heated by the pressurized airflow to melt and have adhesive force.

[0075] For example, a heat source device can be provided in the airflow generator, which can generate heat. In this way, while controlling the airflow generator to generate the pressurized airflow on the adhesive, the heat source device can be controlled to generate heat. In the process of the pressurized airflow flowing through the heat source device, the pressurized airflow can be heated by the heat source device to increase the temperature of the pressurized airflow to a temperature at which the adhesive can melt. For example, in the case of using an EVA adhesive tape as the adhesive, the pressurized airflow can be heated by the heat source device to 60 to 85 degrees Celsius, and the EVA adhesive tape can melt at such a temperature.

[0076] In the above embodiments, the heat source device can be controlled to heat the pressurized airflow generated by the airflow generator to a temperature within the melting point range of the adhesive. In this way, the pressurized airflow not only applies a force to the adhesive towards the adhesive surface, but also melts the adhesive, which can reduce the step of heating the adhesive by a dedicated heating device, and is beneficial to improving the efficiency of bonding the adhesive to the adhesive surface.

[0077] Referring to FIG. 6, FIG. 6 shows a third flowchart of the tab adhesive method provided by the present disclosure. As shown in FIG. 6, based on FIG. 3, the method further includes step S301, which will be described in combination with the steps shown in FIG. 6.

[0078] S301, at least a part of the to-be-bonded part of the adhesive corresponding to the adhesive surface is heated to at least a part of the to-be-bonded part reaches a melting state capable of being bonded to the adhesive surface.

[0079] In some embodiments, before the pressure bonding airflow is generated on the adhesive, at least a portion of the adhesive can be heated by other heating devices or the bare battery cell with a higher temperature, so that the temperature of at least a portion of the to-be-bonded portion of the adhesive corresponding to the adhesive surface is increased. For example, the edge portion of the to-be-bonded portion can be heated to a molten state, or the temperature of the to-be-bonded portion is increased to a state close to melting, that is, the to-be-bonded portion is softened, and can be bonded with the adhesive surface.

[0080] For example, the edge of the to-be-bonded portion of the adhesive can be brought into abutment with the portion of the bare battery cell adjacent to the tab, so as to heat the edge of the to-be-bonded portion by using the residual heat of the bare battery cell, and to bond the edge of the to-be-bonded portion with the portion of the bare battery cell adjacent to the tab, so as to achieve positioning of the to-be-bonded portion. Alternatively, the to-be-bonded portion of the adhesive can be brought into abutment with the bare battery cell and the tab, so as to heat the to-be-bonded portion by using the residual heat of the bare battery cell, and to preliminarily bond the to-be-bonded portion with the tab. In this way, the airflow generator is controlled to generate a pressure bonding airflow with a higher temperature on the to-be-bonded portion, so as to tightly bond the to-be-bonded portion with each portion of the tab.

[0081] In the above embodiments, since at least a portion of the to-be-bonded portion is heated before the pressure bonding airflow is generated on the adhesive, positioning of at least a portion of the to-be-bonded portion with the bare battery cell can be achieved, or preliminary bonding of the to-be-bonded portion with the adhesive surface of the tab can be achieved. In this way, in the subsequent process of generating the pressure bonding airflow on the to-be-bonded portion by the airflow generator, the risk of mispositioning of the to-be-bonded portion with the tab can be reduced, which is beneficial to improving the positional accuracy of bonding of the adhesive with the tab. Meanwhile, the energy consumption for heating the adhesive by the pressure bonding airflow can be saved.

[0082] Referring to FIG. 8, FIG. 8 shows a flowchart of a fourth method for tab bonding provided by the present disclosure. As shown in FIG. 8, based on FIG. 3, step S103 in FIG. 3 can be implemented by steps S1031 to S1032, which will be described in combination with the steps shown in FIG. 8.

[0083] S1031, control the airflow generator to generate a pressure bonding airflow on a positioning portion in the to-be-bonded portion of the adhesive, so as to bond the positioning portion with the surface of the bare battery cell and / or bond the positioning portion with the edge portion of the adhesive surface.

[0084] In some embodiments, during the process of controlling the air flow generator to generate the pressure air flow on the to-be-bonded part of the adhesive, the pressure air flow can be applied on a part of the to-be-bonded part to generate a force towards the bare battery cell, so as to bond the part of the to-be-bonded part to the bare battery cell or the adhesive surface of the tab.

[0085] For example, referring to FIG. 9, FIG. 9 shows a schematic diagram III of the adhesive bonding method of the tab provided by the present disclosure. As shown in FIG. 9, the air flow generator can be controlled to generate the pressure air flow 4 on the edge part of the to-be-bonded part of the adhesive 3, that is, the positioning part of the to-be-bonded part adjacent to the surface of the bare battery cell 1 is first bonded to the surface of the bare battery cell 1. Alternatively, the air flow generator can be controlled to generate the pressure air flow 4 on the part of the to-be-bonded part of the adhesive 3 corresponding to the edge of the adhesive surface, that is, the positioning part of the to-be-bonded part corresponding to the edge part of the adhesive surface is first bonded to the edge area of the adhesive surface. In this way, a part of the to-be-bonded part is first bonded to the bare battery cell 1 or the tab 11, so that the positioning of the to-be-bonded part can be realized.

[0086] S1032, controlling the air flow generator to generate the pressure air flow on the to-be-bonded part.

[0087] In some embodiments, after the positioning of the to-be-bonded part to the bare battery cell is completed, the air flow generator can be controlled to generate the pressure air flow on all areas of the to-be-bonded part, or the air flow generator can be controlled to generate the pressure air flow on the areas of the to-be-bonded part excluding the positioning part, so that each area of the to-be-bonded part is tightly bonded to the surface of the bare battery cell and the adhesive surface of the tab.

[0088] In the above embodiments, since the air flow generator is controlled to generate the pressure air flow on the positioning part of the to-be-bonded part of the adhesive first, the positioning part of the to-be-bonded part is first bonded to the bare battery cell or the adhesive surface, so that the positioning of the to-be-bonded part can be realized, which is beneficial to improving the position accuracy of the to-be-bonded part bonded to the adhesive surface. After the positioning of the to-be-bonded part is completed, the pressure air flow is generated on the to-be-bonded part, so that each part of the to-be-bonded part is tightly bonded to the bare battery cell and / or the adhesive surface.

[0089] Referring to FIG. 10, FIG. 10 shows a schematic diagram V of the adhesive bonding method of the tab provided by the present disclosure. As shown in FIG. 10, based on FIG. 3, the step S103 in FIG. 3 can also be realized by at least one of steps S1033 or S1034. The steps will be described in combination with FIG. 10.

[0090] S1033, controlling the air flow generator to move along the extension direction of the adhesive surface, so that the pressure air flow flows continuously from one end of the adhesive surface to the other end of the adhesive surface.

[0091] In some embodiments, the part to be bonded of the adhesive can be subjected to the pressure airflow generated by the airflow generator to apply a force to the part to be bonded towards the adhesive surface to bond the part to be bonded to the adhesive surface.

[0092] For example, as shown in FIG. 9, the movement of the airflow generator can be controlled according to the extension direction of the adhesive surface, so that the airflow generator moves along the extension direction of the adhesive surface, that is, the flow direction of the pressure airflow 4 generated by the airflow generator is perpendicular or close to perpendicular to the adhesive surface during the movement of the airflow generator towards the part to be bonded of the adhesive 3. In this way, the pressure airflow 4 can apply the maximum force to the part to be bonded.

[0093] For another example, the airflow generator can be controlled to move continuously and uniformly from one end of the adhesive surface to the other end of the adhesive surface, that is, the pressure airflow 4 continuously flows from one end of the part to be bonded to the other end. In this way, by controlling the flow rate of the pressure airflow 4, the part to be bonded can be tightly bonded to the adhesive surface by applying a force to the part to be bonded by the pressure airflow 4 once.

[0094] S1034, controlling the airflow generator to move back and forth along the extension direction of the adhesive surface so that the pressure airflow flows at least twice between the two ends of the adhesive surface.

[0095] In some embodiments, the part to be bonded of the adhesive can be subjected to the pressure airflow generated by the airflow generator to apply a force to the part to be bonded towards the adhesive surface to bond the part to be bonded to the adhesive surface.

[0096] For example, in the case where the part to be bonded needs to be heated by the pressure airflow to melt the part to be bonded, the airflow generator can be controlled to move back and forth along the extension direction of the adhesive surface at least once, that is, the pressure airflow flows at least from the first end to the second end of the part to be bonded, and then from the second end to the first end. In this way, the part to be bonded can be heated at least twice, so that the temperature of the part to be bonded can reach the melting point, and a force can be applied to the part to be bonded towards the adhesive surface to tightly bond the part to be bonded to the adhesive surface.

[0097] In the above embodiments, since the airflow generator is controlled to move along the extension direction of the adhesive surface, the pressure airflow generated by the airflow generator can apply a force to each part of the part to be bonded towards the adhesive surface, thereby improving the reliability of bonding the part to be bonded to the adhesive surface. In addition, in the case where the part to be bonded needs to be heated, the airflow generator can be controlled to move back and forth along the extension direction of the adhesive surface, so that the part to be bonded can be heated at least twice, thereby allowing the part to be bonded to absorb enough heat to melt, and then tightly bond the part to be bonded to the adhesive surface.

[0098] Referring to FIG. 11, FIG. 11 shows a schematic diagram of a sixth method for pasting the tab with adhesive according to the present disclosure. As shown in FIG. 11, based on FIG. 3, step S102 in FIG. 3 can be implemented by steps S1021-S1022. The steps shown in FIG. 11 will be described in combination.

[0099] S1021, control the unwinding device to drive the adhesive to move towards the direction close to the pasting surface until the to-be-bonded part of the adhesive moves to correspond to the positioning mechanism.

[0100] In some embodiments, the positioning mechanism can be arranged in the tab adhesive pasting device to position the adhesive by the positioning mechanism so that the adhesive is in the accurate position relative to the pasting surface of the tab.

[0101] For example, the adhesive driving part in the unwinding device can be controlled to drive the adhesive to move towards the direction close to the pasting surface of the tab so that a part of the adhesive is adjacent to the pasting surface. During the movement of the adhesive driven by the adhesive driving part, when the to-be-bonded part of the adhesive corresponds to the positioning mechanism, that is, the to-be-bonded part abuts against the positioning mechanism, or the to-be-bonded part moves to a position at a preset distance from the positioning mechanism, the adhesive driving part is controlled to stop moving.

[0102] S1022, control the positioning mechanism to connect with the to-be-bonded part to limit the to-be-bonded part in the position corresponding to the pasting surface.

[0103] In some embodiments, after the to-be-bonded part corresponds to the positioning mechanism, the positioning mechanism can be controlled to move towards the direction close to the bare battery cell so as to connect with the to-be-bonded part to limit the to-be-bonded part in the position corresponding to the pasting surface by the positioning mechanism.

[0104] For example, the positioning mechanism can be controlled to move towards the direction close to the bare battery cell until the positioning mechanism crimps the to-be-bonded part to abut against the surface of the bare battery cell or the pasting surface of the tab. Alternatively, the positioning mechanism can also be controlled to clamp both ends of the to-be-bonded part to limit the to-be-bonded part in the fixed region corresponding to the pasting surface.

[0105] In the above embodiments, since the unwinding device is controlled to drive the adhesive to move towards the direction close to the pasting surface, the to-be-bonded part of the adhesive can correspond to the pasting surface of the tab. And the positioning mechanism is controlled to connect with the to-be-bonded part, which can limit the position of the to-be-bonded part relative to the pasting surface by the positioning mechanism, which is conducive to improving the position accuracy of the to-be-bonded part bonded with the pasting surface.

[0106] In addition, the battery provided by the embodiments of the present disclosure includes a bare cell and a bonding adhesive, wherein the bare cell has a tab, and the bonding adhesive is bonded to a bonding surface of the tab.

[0107] In some embodiments, the battery includes a bare cell, a shell for enclosing the bare cell and other devices such as electrolyte. A tab can be provided on the bare cell to lead current out of the bare cell through the tab. For example, a positive tab is provided on a positive electrode in the bare cell, and a negative tab is provided on a negative electrode in the bare cell.

[0108] In some embodiments, a bonding adhesive with insulating properties can be provided on the tab away from the surface of the bare cell to insulate the tab from other devices through the bonding adhesive covering the tab, and the strength of the tab can be enhanced through the bonding adhesive.

[0109] In some embodiments, the bonding adhesive can be bonded to the tab by using the tab bonding method provided by any one of the above embodiments, that is, by generating a pressure airflow to the bonding adhesive, so that the bonding adhesive is bonded to the tab under the action force of the pressure airflow.

[0110] The battery provided by the embodiments of the present disclosure can control the flow rate of the pressure airflow to make each part of the bonding adhesive receive a large enough action force, so that each part of the bonding surface of the tab is bonded to the bonding adhesive, thereby improving the bonding reliability of the bonding adhesive and the tab, and facilitating the improvement of the safety and stability of the battery.

[0111] The embodiments of the present disclosure also provide a tab bonding device. Referring to FIG. 12, FIG. 12 shows a schematic diagram of the composition structure of the tab bonding device provided by the present disclosure. The tab bonding device includes a bonding tool 5, a unwinding device 6 and an airflow generator 7. The bonding tool 5 has a cell bearing part matched with the bare cell 1 for bearing the bare cell 1. The unwinding device 6 is arranged adjacent to the bonding tool 5. The unwinding device 6 has an adhesive bearing part 61 for bearing the bonding adhesive 3 and an adhesive driving part 62 for driving the bonding adhesive 3 to move towards the bare cell 1. The airflow generator 7 is arranged at a position corresponding to the cell bearing part for generating a pressure airflow.

[0112] In some embodiments, the bonding tool 5 can provide support and positioning for the bare cell 1 and / or the adapter plate 2, so as to place the tab 11 on the bare cell 1 in a determined position.

[0113] Exemplarily, the electrode carrier part can be arranged on the adhesive attaching tool 5 to match the bare electrode 1. For example, the electrode carrier part can be arranged as an electrode clamping mechanism matching the bare electrode 1, so as to clamp and fix the bare electrode 1 on the adhesive attaching tool 5 through the electrode clamping mechanism. Alternatively, the electrode carrier part can be arranged as a clamping cavity, such as a groove, and the bare electrode 1 can be placed in the clamping cavity to realize positioning and supporting of the bare electrode 1.

[0114] In some embodiments, the unwinding device 6 can provide a placement position for the adhesive 3, and can drive the adhesive 3 to the position corresponding to the tab 11 on the bare electrode 1. In order to facilitate assembly of each part in the tab adhesive attaching device, a base body 10 can be arranged in the tab adhesive attaching device. The base body 10 can be a frame-shaped support or a flat mounting table. Then, the adhesive attaching tool 5 and the unwinding device 6 can be mounted on the base body 10.

[0115] Exemplarily, an adhesive carrier part 61 can be arranged in the unwinding device 6 to place and carry the adhesive 3 to be used. For example, the adhesive carrier part 61 can be arranged in the structure of a roller. The adhesive 3 wound in a roll can be sleeved on the roller. With rotation of the roller, the adhesive 3 wound in a roll can be unwound.

[0116] Alternatively, an adhesive driving part 62 can be arranged in the unwinding device 6 to drive the adhesive 3 unwound from the adhesive carrier part 61 to move towards the tab 11. For example, the adhesive driving part 62 can be arranged to include at least two driving rollers. The at least two driving rollers are arranged at positions corresponding to the electrode carrier part, and are sequentially distributed along the extension direction of the tab 11. The driving rollers include a driving roller and a driven roller. The adhesive 3 is clamped between the driving roller and the driven roller. During rotation of the driving roller, the adhesive 3 can be driven to move.

[0117] In some embodiments, the airflow generator 7 can generate a pressure contact airflow. The airflow generator 7 can be mounted on the base body 10, and an air outlet of the airflow generator 7 is arranged towards the electrode carrier part. The airflow generated by the airflow generator 7 can flow to the tab 11 of the bare electrode 1 located on the electrode carrier part.

[0118] Exemplarily, the air flow generator 7 can be in a structure form with a motor and a fan, the fan is in transmission connection with the motor, the fan is driven to rotate by the motor to generate a pressurized air flow with a preset flow rate. A housing can be arranged in the air flow generator 7, the motor and the fan can be both arranged in the housing, an air outlet of the housing can be arranged as a narrow strip-shaped opening matching the width of the tab 11, or the air outlet of the housing can be arranged as a directional opening matching the overall shape of the tab 11. Then the overall shape of the pressurized air flow can be controlled through the air outlet of the housing.

[0119] The tab gluing equipment provided by the embodiments of the present disclosure can support the bare battery cell 1 through the battery cell bearing part arranged on the gluing tool 5, and can position the bare battery cell 1. The unwinding device 6 is arranged at a position adjacent to the gluing tool 5, the adhesive 3 to be used can be placed on the adhesive bearing part 61 in the unwinding device 6, and the adhesive 3 can be driven to move by the adhesive driving part 62 in the unwinding device 6, so as to extend the adhesive 3 to a position corresponding to the tab 11 on the bare battery cell 1. Meanwhile, the air flow generator 7 is arranged at a position corresponding to the battery cell bearing part, the air flow generator 7 can be controlled to generate a pressurized air flow to the adhesive 3 adjacent to the tab 11, and the adhesive 3 can abut against the gluing surface of the tab 11 under the action force of the pressurized air flow. In this way, the flow rate of the pressurized air flow can be controlled, so that each part of the adhesive 3 is subjected to a large enough action force, thereby abutting and adhering each part of the adhesive 3 to the gluing surface, and the reliability of the adhesive and the tab 11 can be improved.

[0120] In some possible embodiments of the present disclosure, the tab gluing equipment further comprises a heat source device 81, the heat source device 81 is arranged on a flow path of the pressurized air flow generated by the air flow generator 7, and is used for heating the pressurized air flow.

[0121] In some embodiments, as shown in FIG. 12, the heat source device 81 can be arranged in the tab 11 gluing process, and the heat source device 81 can be arranged on the flow path of the pressurized air flow generated by the air flow generator 7.

[0122] Exemplarily, the heat source device 81 can adopt an electric heating wire, such as a nichrome heating wire, an iron-chromium-aluminum heating wire, etc. The heat source device 81 can also adopt a ceramic heater. The embodiments of the present disclosure do not limit the type of the heat source device 81. The heat source device 81 can be arranged in the air flow generator 7, such as between the fan and the air outlet of the air flow generator 7. In this way, after the air flow generated by the fan flows through the heat source device 81, the air flow can be heated by the heat of the heat source device 81, so that the pressurized air flow reaches the required temperature.

[0123] In the above embodiment, since the heat source device 81 is arranged in the tab gluing device, and the heat source device 81 is arranged on the flow path of the pressing airflow generated by the airflow generator 7, the pressing airflow generated by the airflow generator 7 can be heated by the heat source device 81, so that the temperature of the pressing airflow can reach the melting point of the adhesive. In this way, not only the adhesive can be melted by the pressing airflow, but also the adhesive can be subjected to the force towards the tab 11 by the pressing airflow, and then the adhesive can be reliably glued to the tab 11.

[0124] In some possible embodiments of the present disclosure, the tab gluing device further comprises a driving mechanism 82, and the airflow generator 7 is mounted on the driving mechanism 82, and the driving mechanism 82 is configured to drive the airflow generator 7 to move relative to the tab 11 of the bare battery cell 1.

[0125] In some embodiments, as shown in FIG. 12, the driving mechanism 82 can be arranged in the tab gluing device, and the airflow generator 7 is mounted on the driving mechanism 82, so as to drive the airflow generator 7 to move relative to the tab 11 by the driving mechanism 82.

[0126] For example, the driving mechanism 82 can be a mechanical arm, such as a mechanical arm with six degrees of freedom. The driving mechanism 82 can also be a linear motor, a cylinder, an air cylinder or other linear motion devices. In this way, the airflow generator 7 can be driven by the driving mechanism 82 to move from one end of the tab 11 to the other end of the tab 11, so as to generate the pressing airflow to each part of the adhesive 3 opposite to the tab 11. During the process that the adhesive driving part 62 drives the adhesive 3 to move towards the tab 11, the airflow generator 7 can be driven by the driving mechanism 82 to move away from the tab 11, so as to avoid the movement of the adhesive 3.

[0127] In the above embodiment, since the airflow generator 7 is mounted on the driving mechanism 82, the airflow generator 7 can be driven by the driving mechanism 82 to move relative to the tab 11 of the bare battery cell 1, so that the pressing airflow can be blown to each part of the adhesive 3 opposite to the tab 11, and the force towards the tab 11 can be applied to each part of the adhesive 3 corresponding to the tab 11, and then each part of the adhesive 3 can be tightly glued to the gluing surface of the tab 11.

[0128] In some possible embodiments of the present disclosure, the tab gluing device further comprises a positioning mechanism 9, and the positioning mechanism 9 comprises a positioning driving part 91 and a positioning part 92. The positioning driving part 91 is arranged at a position corresponding to the battery cell carrying part, and the positioning part 92 is arranged on the positioning driving part 91. The positioning driving part 91 is configured to drive the positioning part 92 to move relative to the battery cell carrying part, so that the positioning part 92 is connected to the adhesive 3, and the position of the adhesive 3 relative to the tab 11 of the bare battery cell 1 is limited.

[0129] In some embodiments, as shown in FIG. 12, a positioning mechanism 9 can be arranged in the tab pasting device to position the pasting adhesive 3 adjacent to the tab 11 by the positioning mechanism 9 to limit the pasting adhesive 3 relative to the tab 11 in a fixed position.

[0130] For example, the positioning mechanism 9 can be arranged in the form of a structure including a positioning drive 91 and a positioning piece 92. The positioning drive 91 can be fixedly installed on the base body 10 or the pasting tool 5. The positioning drive 91 can be a drive such as a pneumatic cylinder, an electric cylinder, or an oil cylinder. The positioning piece 92 can be installed on the output portion of the positioning drive 91 to be driven by the positioning drive 91 to move towards or away from the bare cell 1. The positioning piece 92 can be a block or a sheet-shaped pressing block, which can press the edge portion of the pasting adhesive 3 against the surface of the bare cell 1 adjacent to the tab 11, or press a portion of the pasting adhesive 3 against the tab 11 to position the pasting adhesive 3 relative to the tab 11. The positioning piece 92 can also be a structure capable of achieving clamping action, which can clamp a portion of the pasting adhesive 3 to limit the position of the pasting adhesive 3.

[0131] In the above embodiments, since the positioning drive 91 is arranged at a position opposite to the cell carrying portion, and the positioning piece 92 is installed on the positioning drive 91, the positioning piece 92 can be driven by the positioning drive 91 to move towards or away from the bare cell 1 on the cell carrying portion, so that the positioning piece 92 can be connected with the pasting adhesive 3, and the position of the pasting adhesive 3 relative to the tab 11 can be limited by the positioning piece 92 to achieve positioning of the pasting adhesive 3 relative to the tab 11, which is beneficial to improving the position accuracy of the pasting adhesive 3 and the tab 11.

[0132] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than limit them; although the present disclosure has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions recorded in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present disclosure, and they should be covered in the scope of the specification of the present disclosure. In particular, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any manner.

Claims

1. A tab pasting method, comprising: placing a bare cell on a pasting tool, and placing a pasting surface of a tab on the bare cell in a position corresponding to a take-up device capable of carrying a pasting adhesive; controlling the take-up device to place the pasting adhesive in a position corresponding to the pasting surface; controlling a flow generator to generate a pressing flow of the pasting adhesive toward the pasting surface, so that the pasting adhesive adheres to the pasting surface under the action of the pressing flow.

2. The tab taping method according to claim 1, wherein Before the step of controlling the flow generator to generate the pressing flow of the pasting adhesive toward the pasting surface, the tab pasting method further comprises: controlling the flow generator to generate the pressing flow, and controlling a heat source device to heat the pressing flow, so that the temperature of the heated pressing flow is greater than or equal to a melting temperature of the pasting adhesive.

3. The tab taping method according to claim 1 or 2, wherein Before the step of controlling the flow generator to generate the pressing flow of the pasting adhesive toward the pasting surface, the tab pasting method further comprises: heating at least a part of a to-be-adhered portion of the pasting adhesive corresponding to the pasting surface, so that the at least part of the to-be-adhered portion reaches a melting state capable of adhering to the pasting surface.

4. The tab taping method according to any one of claims 1 to 3, wherein The controlling of the flow generator to generate the pressing flow of the pasting adhesive toward the pasting surface comprises: controlling the flow generator to generate the pressing flow on a positioning portion in the to-be-adhered portion of the pasting adhesive, so that the positioning portion adheres to a surface of the bare cell and / or adheres to an edge portion of the pasting surface; controlling the flow generator to generate the pressing flow on the to-be-adhered portion.

5. The tab taping method according to any one of claims 1 to 4, wherein The controlling of the flow generator to generate the pressing flow of the pasting adhesive toward the pasting surface comprises: controlling the flow generator to move along an extension direction of the pasting surface, so that the pressing flow continuously flows from one end of the pasting surface to the other end of the pasting surface; or controlling the flow generator to reciprocally move along the extension direction of the pasting surface, so that the pressing flow flows at least twice between the two ends of the pasting surface.

6. The tab taping method according to any one of claims 1 to 5, wherein The controlling of the take-up device to place the pasting adhesive in the position corresponding to the pasting surface comprises: controlling the take-up device to move the pasting adhesive toward the pasting surface until a to-be-adhered portion of the pasting adhesive is positioned corresponding to a positioning mechanism; and controlling the positioning mechanism to connect with the to-be-adhered portion, so as to limit the to-be-adhered portion in the position corresponding to the pasting surface. 7.A battery, comprising: a bare cell having a tab thereon; a pasting adhesive adhered to a pasting surface of the tab; and wherein the pasting adhesive is adhered to the pasting surface by the tab pasting method according to any one of claims 1 to 6. 8.A tab pasting device, comprising: a pasting tool having a cell carrying portion matched with a bare cell, for carrying the bare cell; and a take-up device capable of carrying a pasting adhesive. A winding-off device is arranged adjacent to the rubberizing tool, and has a rubber bearing part for bearing the rubber and a rubber driving part for driving the rubber to move towards the bare battery cell; An air flow generator is arranged corresponding to the battery cell bearing part for generating a pressing air flow.

9. The tab taping apparatus of claim 8, wherein, A heat source device is arranged on a flow path of the pressing air flow generated by the air flow generator for heating the pressing air flow.

10. The tab taping apparatus of claim 8 or 9, wherein, A driving mechanism is arranged for driving the air flow generator to move relative to the tab of the bare battery cell.

11. The tab taping apparatus of any one of claims 8 to 10, wherein, A positioning mechanism is arranged and includes a positioning driving part and a positioning part, the positioning driving part is arranged corresponding to the battery cell bearing part, and the positioning part is arranged on the positioning driving part, the positioning driving part is arranged for driving the positioning part to move relative to the battery cell bearing part, so that the positioning part is connected with the rubber to limit the position of the rubber relative to the tab of the bare battery cell.

Images