Bending mechanism

Abstract

The utility model relates to the technical field of batteries, and discloses a bending mechanism, the bending mechanism is used for bending a nickel sheet of a battery cell so that the nickel sheet can be welded to a circuit board, the bending mechanism comprises a base and a first plate part, the base is used for placing the battery cell and the circuit board; in the first direction, the first plate part is movably arranged on the base; wherein the first plate part is provided with a plurality of first tooth heads, the plurality of first tooth heads are sequentially arranged along the second direction, and each first tooth head is arranged opposite to the corresponding nickel sheet of the battery cell along the first direction, so that the corresponding nickel sheet of the battery cell is stopped and bent when the first plate part moves towards the battery cell; and the first direction, the second direction and the thickness direction of the base are vertical pairwise. According to the bending mechanism, the bending efficiency is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of batteries, in particular to a folding mechanism. BACKGROUND

[0002] Nowadays, there are various electronic products, which develop rapidly. The power required by various electrical appliances such as new energy vehicles, electric bicycles and electric mowers is different, so different numbers of battery cells and different series and parallel connection modes between the battery cells are required to achieve the required power parameters. Lithium battery welding is mainly divided into resistance welding and laser welding.

[0003] At present, the existing laser welding of nickel sheets and battery cells is usually straight, and the employees need to press and fold the nickel sheets by hand before welding. If the battery is large and the nickel sheet is more, the employees need to consume more time to press and fold the nickel sheet. Content of the utility model

[0004] The application provides a folding mechanism, which improves the folding efficiency.

[0005] In order to achieve the above purpose, the main technical scheme adopted by the application comprises:

[0006] In a first aspect, the application provides a folding mechanism for folding the nickel sheet of a battery cell so that the nickel sheet is welded to a circuit board. The folding mechanism comprises a base and a first plate portion: the base is used to place the battery cell and the circuit board; the first plate portion is movably arranged on the base along a first direction; wherein the first plate portion is provided with a plurality of first tooth heads, the plurality of first tooth heads are arranged in sequence along a second direction, and each first tooth head is arranged opposite to a corresponding nickel sheet of the battery cell along the first direction to stop and fold the corresponding nickel sheet of the battery cell when the first plate portion moves towards the battery cell. The first direction, the second direction and the thickness direction of the base are perpendicular to each other.

[0007] In the above scheme, the nickel sheet of the battery cell is folded by moving the first plate portion, which can realize automatic operation and improve the folding efficiency. Since the first plate portion is provided with a plurality of first tooth heads, and each first tooth head is arranged opposite to a corresponding nickel sheet of the battery cell, it is ensured that each nickel sheet can be accurately stopped and folded during the folding process, which improves the folding accuracy and the reliability of the folded nickel sheet, and helps to realize the accurate welding between the nickel sheet and the circuit board.

[0008] Optionally, the plurality of first tooth heads are arranged at intervals along the second direction to form a first avoiding space.

[0009] In the above scheme, by forming the avoiding space, different specifications of the battery cell can be adapted, so that the folding mechanism has stronger universality and flexibility, and the folding of the nickel sheet of the battery cell is more smooth and efficient, and the probability of reducing the efficiency due to interference or failure to adapt to different specifications of the battery cell is reduced.

[0010] Optionally, each first tooth head comprises a first tooth head body and a first bending part, the first bending part is located at one end of the first tooth head body away from the base along the thickness direction of the base, and the first bending part protrudes from the first tooth head body towards the side surface of the battery cell along the first direction.

[0011] In the above scheme, the first bending part can first contact the nickel sheet, playing a guiding and stabilizing role, preventing the nickel sheet from deviating or deforming during the bending process. Since the first bending part protrudes from the first tooth head body, it can more effectively contact and apply pressure to the nickel sheet, thereby achieving more precise bending effect.

[0012] Optionally, the bending mechanism further comprises a first pushing part, the first pushing part is arranged on the base, and the driving end of the first pushing part is connected with the first plate part to drive the first plate part to move along the first direction.

[0013] In the above scheme, the first pushing part can quickly drive the first plate part to move, thereby shortening the bending period and improving the bending efficiency. Through the precise control of the first pushing part, it can be ensured that the first plate part accurately reaches the predetermined position when moving along the first direction, thereby realizing the precise bending of the nickel sheet of the battery cell.

[0014] Optionally, the bending mechanism further comprises a second plate part, the second plate part is arranged on the base, and the second plate part is arranged opposite to and spaced apart from the first plate part along the first direction.

[0015] The second plate part is provided with a plurality of second tooth heads, the plurality of second tooth heads are arranged in sequence along the second direction, and each second tooth head is arranged opposite to the corresponding nickel sheet of the battery cell along the first direction to abut and bend the corresponding nickel sheet of the battery cell when the second plate part moves towards the battery cell.

[0016] In the above scheme, the nickel sheet of the battery cell is bent by moving the first plate part, which can realize automatic operation and thereby improve the bending efficiency. Since the first plate part is provided with a plurality of first tooth heads and each first tooth head is arranged opposite to the corresponding nickel sheet of the battery cell, it is ensured that each nickel sheet can be precisely abutted and bent during the bending process, thereby improving the bending accuracy and the reliability of the nickel sheet after bending, which is helpful to realize the precise welding between the nickel sheet and the circuit board.

[0017] Optionally, the plurality of second tooth heads are arranged spaced apart along the second direction to form a second avoiding space.

[0018] In the above scheme, by forming the avoiding space, different specifications of battery cells can be adapted, so that the bending mechanism has stronger universality and flexibility, and the bending of the nickel sheet of the battery cell is more smooth and efficient, thereby reducing the probability of reducing the efficiency due to interference or inability to adapt to different specifications of battery cells.

[0019] Optionally, each second tooth head comprises a second tooth head body and a second bending part, the second bending part is located at one end of the second tooth head body away from the base in the thickness direction of the base, and the second bending part protrudes from the second tooth head body in the first direction and faces the side surface of the battery cell.

[0020] In the above scheme, the second bending part can first contact the nickel sheet, playing a guiding and stabilizing role, preventing the nickel sheet from shifting or deforming during the bending process. Since the second bending part protrudes from the second tooth head body, it can more effectively contact and apply pressure to the nickel sheet, thereby achieving more precise bending. Meanwhile, the second bending part can bend at the same time as the first bending part, so that the nickel sheets on both sides of the battery cell can be bent simultaneously, helping to improve the bending efficiency.

[0021] Optionally, the bending mechanism further comprises a pushing block, the pushing block is movably arranged on the base, and the pushing block is arranged on the side of the battery cell away from the first plate part in the first direction to help the battery cell move in the first direction.

[0022] In the above scheme, the pushing block can directly act on the battery cell to push it to move in the first direction, push the battery cell away from the second plate part and reset it, thereby improving the degree of automation and the bending efficiency.

[0023] Optionally, the bending mechanism further comprises a limiting block, the limiting block is arranged on the base, and the limiting block is arranged on the side of the pushing block away from the first plate part in the first direction to limit the movement of the pushing block in the first direction.

[0024] In the above scheme, the limiting block can accurately limit the movement distance of the pushing block in the first direction, thereby ensuring that the pushing block does not move too much and reducing the probability that the pushing block cannot push the battery cell to reset.

[0025] Optionally, the bending mechanism further comprises a first holding block and a second holding block, the first holding block and the second holding block are arranged opposite and spaced apart in the second direction to clamp the battery cell.

[0026] In the above scheme, the first holding block and the second holding block are arranged opposite and spaced apart, which can form a stable clamping space for fixing the battery cell, ensuring that the battery cell does not move or shift during the bending process, thereby improving the accuracy and consistency of the bending. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0028] Figure 1 It is a whole structure schematic diagram in another angle of the embodiment of the present application;

[0029] Figure 2 It is a whole structure schematic diagram in another angle of the embodiment of the present application;

[0030] Figure 3 It is a local structure schematic diagram in the embodiment of the present application.

[0031]

Explanation of reference numerals

[0032] 100: base;

[0033] 200: first plate part; 210: first tooth head; 211: first tooth head body; 212: first bending part; 220: avoiding space;

[0034] 300: second plate part; 310: second tooth head; 311: second tooth head body; 312: second bending part; 320: second avoiding space;

[0035] 400: first pushing part;

[0036] 500: limiting block; 510: spring;

[0037] 600: pushing block;

[0038] 700: battery cell; 710: nickel sheet; 720: circuit board;

[0039] 810: first holding block; 820: second holding block;

[0040] X: first direction; Y: second direction. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0042] Unless otherwise defined, all technical and scientific terms used in the application have the same meanings as those commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The use of the terms "including," "comprising," or "having" in the description of the application herein is not intended to exclude or require the presence of any features, integers, steps, operations, elements, or components in the resulting product, but rather to "cover the presence or absence of such features, integers, steps, operations, elements, components), and to cover any and all combinations thereof. The use of the terms "first," "second," and the like in the description of the application herein is intended to modify various features of the application, without prejudice to the position of such features in a serial fashion. Terms "first," "second," and the like can be used interchangeably with terms "one," "another," and the like where no specific recitation is intended.

[0043] 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 application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive or alternative embodiments. It is expressly understood that any of the described embodiments of the application can be incorporated in to other embodiments of the application, explicitly or implicitly, without specific reference herein.

[0044] In the description of the application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "attachment" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0045] The term "and / or" in the application is only a description of the association relationship between the associated objects, which means that there can be three kinds of relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in the application generally represents an "or" relationship between the front and rear associated objects.

[0046] "Multiple" appearing in the application refers to more than two (including two), and similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0047] Nowadays, there are many kinds of electronic products, which are developing rapidly. The power required by electric equipment such as new energy vehicles, electric bicycles, electric lawn mowers, etc. is different, so different numbers of battery cells and different series and parallel connection modes between battery cells are needed to achieve the required power parameters. Lithium battery welding is mainly divided into resistance welding and laser welding.

[0048] At present, the existing nickel sheet and the laser welding of the battery cell, the nickel sheet is usually straight, and the staff needs to press and bend the nickel sheet with fingers before welding. This method is not a problem for 2 or 3 nickel sheets. If the battery is larger and the nickel sheet is more, the staff needs to consume more time to press and bend the nickel sheet, and the bending effect varies from person to person.

[0049] Therefore, in order to improve the bending efficiency of the nickel sheet, the bending mechanism is disclosed in the embodiments of the present application, which is used for bending the nickel sheet 710 of the battery cell 700 so that the nickel sheet 710 is welded to the circuit board 720. Please refer to Figure 1 , which comprises a base 100 and a first plate part 200.

[0050] The base 100 is used to place the battery cell 700 and the circuit board 720. Along the first direction X, the first plate part 200 is movably arranged on the base 100. It can be understood that the first plate part 200 can move on the base 100, so as to approach or move away from the battery cell 700, and can play a role in pushing the battery cell 700.

[0051] By moving the first plate part 200 to bend the nickel sheet 710 of the battery cell 700, automatic operation can be realized, thereby improving the bending efficiency,

[0052] Among them, the first plate part 200 is provided with a plurality of first tooth heads 210, which are arranged in sequence along the second direction Y, and the plurality of first tooth heads 210 can be bent at the same time, thereby improving the bending efficiency.

[0053] Along the first direction X, each first tooth head 210 is arranged opposite to the corresponding nickel sheet 710 of the battery cell 700, so as to stop and bend the corresponding nickel sheet 710 of the battery cell 700 when the first plate part 200 moves towards the battery cell 700. The first direction X, the second direction Y and the thickness direction of the base 100 are perpendicular to each other.

[0054] It can be understood that, since the first plate part 200 is provided with a plurality of first tooth heads 210, and each first tooth head 210 is arranged opposite to the corresponding nickel sheet 710 of the battery cell 700, it is ensured that each nickel sheet 710 can be precisely stopped and bent during the bending process, thereby improving the bending accuracy and the reliability of the nickel sheet 710 after bending, which is helpful to realize the accurate welding between the nickel sheet 710 and the circuit board 720.

[0055] In addition, by adjusting the moving distance of the first plate part 200 and the arrangement of the first tooth heads 210, the bending mechanism can flexibly adapt to different specifications of the battery cell 700 and the nickel sheet 710, thereby improving the versatility and flexibility.

[0056] In other embodiments, please refer to Figure 1The plurality of first tooth heads 210 are spaced apart to form first avoiding spaces 220 along the second direction Y.

[0057] It can be understood that when bending the nickel sheet 710 of the battery cell 700, if there is no avoiding space 220 between the first tooth heads 210, adjacent tooth heads can interfere with each other, resulting in poor bending effect or even damage to the battery cell 700 and the nickel sheet 710. By spacing to form the avoiding space 220, it can be ensured that each first tooth head 210 can work independently when bending and do not interfere with each other, thereby improving the accuracy and stability of the bending.

[0058] In addition, by forming the avoiding space 220, different specifications of the battery cell 700 can be adapted, so that the bending mechanism has stronger universality and flexibility, and the bending of the nickel sheet 710 of the battery cell 700 is more smooth and efficient, reducing the probability of reducing efficiency due to interference or inability to adapt to different specifications of the battery cell 700.

[0059] In some other embodiments, please refer to Figure 2 Each first tooth head 210 includes a first tooth head body 211 and a first bending part 212. Along the thickness direction of the base 100, the first bending part 212 is located at the end of the first tooth head body 211 away from the base 100.

[0060] It can be understood that the first bending part 212 enables the bending mechanism to have stronger force when bending the nickel sheet 710 of the battery cell 700, and when the first plate part 200 moves towards the battery cell 700, the first bending part 212 can first contact the nickel sheet 710, playing a guiding and stabilizing role, preventing the nickel sheet 710 from shifting or deforming during the bending process, and helping to improve the stability of the nickel sheet 710 during the bending process.

[0061] Along the first direction X, the first bending part 212 protrudes from the side of the first tooth head body 211 towards the battery cell 700. It can be understood that since the first bending part 212 protrudes from the first tooth head body 211, it can more effectively contact and apply pressure to the nickel sheet 710, thereby achieving more accurate bending effect.

[0062] In some other embodiments, please refer to Figure 1 The bending mechanism further includes a first pushing part 400, which is provided on the base 100. It can be understood that the first pushing part 400 realizes automatic operation, which helps to improve the bending efficiency.

[0063] The driving end of the first pushing part 400 is connected with the first plate part 200 to drive the first plate part 200 to move along the first direction X.

[0064] It can be understood that the first pushing part 400 can quickly drive the first plate part 200 to move, thereby shortening the bending period and improving the bending efficiency. Through the accurate control of the first pushing part 400, it can be ensured that the first plate part 200 accurately reaches the predetermined position when moving along the first direction X, thereby realizing the accurate bending of the nickel sheet 710 of the battery cell 700.

[0065] The first pushing part 400 can provide sufficient driving force to ensure that the first plate part 200 can overcome the elasticity and other resistance of the nickel sheet 710 during the bending process, realize complete bending, and help improve the success rate and quality of bending.

[0066] In other embodiments, please refer to Figure 1 , the bending mechanism further comprises a second plate part 300, which is arranged on the base 100. It can be understood that the second plate part 300 enables the bending mechanism to simultaneously process multiple nickel sheets 710 of the battery cell 700, thereby significantly improving the bending efficiency.

[0067] Along the first direction X, the second plate part 300 is arranged opposite and spaced apart from the first plate part 200, so that the second plate part 300 can simultaneously bend the nickel sheets 710 on both sides of the battery cell 700 along the first direction X with the first plate part 200, which helps to improve the bending efficiency.

[0068] The second plate part 300 is provided with a plurality of second tooth heads 310, which are arranged in sequence along the second direction Y. It can be understood that the plurality of second tooth heads 310 on the second plate part 300 are arranged in sequence along the second direction Y, so that the bending mechanism can simultaneously bend multiple nickel sheets 710.

[0069] Along the first direction X, each second tooth head 310 is arranged opposite to the corresponding nickel sheet 710 of the battery cell 700 to stop and bend the corresponding nickel sheet 710 of the battery cell 700 when the battery cell 700 moves opposite to the second plate part 300.

[0070] It can be understood that each second tooth head 310 is arranged opposite to the corresponding nickel sheet 710 of the battery cell 700 to ensure accurate alignment during the bending process. When the battery cell 700 moves opposite to the second plate part 300, the second tooth head 310 can accurately stop and bend the nickel sheet 710 of the battery cell 700, avoiding bending deviation caused by inaccurate alignment.

[0071] In other embodiments, please refer to Figure 1 , along the second direction Y, the plurality of second tooth heads 310 are arranged spaced apart to form a second avoiding space 320.

[0072] It can be understood that when bending the nickel sheet 710 of the battery cell 700, if there is no avoiding space 220 between the second tooth heads 310, the adjacent tooth heads may interfere with each other, resulting in poor bending effect or even damage to the battery cell 700 and the nickel sheet 710. By providing the avoiding space 220 through the interval, it can be ensured that each second tooth head 310 can work independently when bending and do not interfere with each other, thereby improving the accuracy and stability of the bending.

[0073] In addition, by forming the avoiding space 220, different specifications of the battery cell 700 can be adapted, so that the bending mechanism has stronger universality and flexibility, and the bending of the nickel sheet 710 of the battery cell 700 is more smooth and efficient, reducing the probability of reducing efficiency due to interference or inability to adapt to different specifications of the battery cell 700.

[0074] In some other embodiments, please refer to Figure 2 Each second tooth head 310 includes a second tooth head body 311 and a second bending part 312. In the thickness direction of the base 100, the second bending part 312 is located at the end of the second tooth head body 311 away from the base 100.

[0075] It can be understood that the second bending part 312 enables the bending mechanism to have stronger force when bending the nickel sheet 710 of the battery cell 700, and the second bending part 312 can first contact the nickel sheet 710, playing a guiding and stabilizing role, preventing the nickel sheet 710 from shifting or deforming during the bending process, and helping to improve the stability of the nickel sheet 710 during the bending process.

[0076] In the first direction X, the second bending part 312 protrudes from the second tooth head body 311 towards the side surface of the battery cell 700. It can be understood that since the second bending part 312 protrudes from the second tooth head body 311, it can more effectively contact and apply pressure to the nickel sheet 710, thereby achieving more accurate bending effect.

[0077] In some other embodiments, please refer to Figure 3 The bending mechanism further includes a pushing block 600 movably arranged on the base 100. It can be understood that the pushing block 600 can move on the base 100, not only can follow the movement of the battery cell 700, but also can play a role in driving the movement of the battery cell 700, further improving the automation of the bending process and improving the bending efficiency.

[0078] In the first direction X, the pushing block 600 is arranged on the side of the battery cell 700 away from the first plate part 200, to help the battery cell 700 move in the first direction X.

[0079] It can be understood that the pushing block 600 can directly act on the battery cell 700 to push it to move back to the reset position in the first direction X, which improves the automation degree and thus improves the bending efficiency. At the same time, it can help the battery cell 700 to keep straight line movement during movement, reduce the problem of inaccurate positioning caused by deviation or shaking, and help to improve the overall working efficiency.

[0080] In some other embodiments, referring to Figure 3 , the bending mechanism further comprises a limiting block 500, which is arranged on the base 100 and is arranged on the side of the pushing block 600 away from the first plate part 200 in the first direction X to limit the movement of the pushing block 600 in the first direction X.

[0081] It can be understood that the limiting block 500 can accurately limit the movement distance of the pushing block 600 in the first direction X, so as to ensure that the pushing block 600 will not move too much, reducing the probability that the pushing block 600 cannot push the battery cell 700 back to the reset position.

[0082] As an example, a spring 510 is arranged between the pushing block 600 and the limiting block 500, which can play a role in elastic extension and contraction and drive the pushing block 600 to move in the first direction X.

[0083] When the first plate part 200 moves in the first direction X and the battery cell 700 moves towards the second plate part 300, the pushing block 600 overcomes the force of the spring 510 and moves towards the limiting block 500 at the same time.

[0084] When the first plate part 200 moves in the first direction X and moves away from the second plate part 300, the pushing block 600 drives the battery cell 700 to move towards the first plate part 200 under the action of the spring 510, so that the battery cell 700 moves away from the second plate part 300 and resets.

[0085] In some other embodiments, referring to Figure 3 , the bending mechanism further comprises a first holding block 810 and a second holding block 820. It can be understood that the first holding block 810 and the second holding block 820 can play a role in holding the battery cell 700, which helps to improve the stability during bending.

[0086] In the second direction Y, the first holding block 810 and the second holding block 820 are arranged opposite and spaced apart to clamp the battery cell 700.

[0087] It can be understood that the first holding block 810 and the second holding block 820 are arranged opposite and spaced apart to form a stable clamping space for fixing the battery cell 700, which ensures that the battery cell 700 will not move or deviate during bending, thereby improving the accuracy and consistency of bending.

[0088] In addition, the design of the holding block enables the battery cell 700 to be quickly and accurately clamped and positioned, thereby reducing operation time and labor cost and helping to improve the bending efficiency.

[0089] In specific embodiments, referring to Figure 2 The protruding length of the second tooth head body 311 from the second plate portion 300 in the first direction X is different, which realizes synchronous bending of the nickel sheets 710 at different positions and thereby improves the bending efficiency and accuracy.

[0090] The length of the second bending portion 312 protruding from the second tooth head body 311 in the first direction X is different, which provides different bending forces for nickel sheets 710 of different lengths and thereby reduces the probability of different bending effects of different nickel sheets 710 and improves reliability.

[0091] Since the nickel sheets 710 of the battery cell 700 can have different lengths, the longer nickel sheets 710 can withstand greater bending force through the larger contact area of the second bending portion 312, while the shorter nickel sheets 710 can achieve accurate bending through the smaller contact area of the second bending portion 312.

[0092] As an example, the battery cell refers to a single electrochemical cell containing positive and negative electrodes, and the battery cell is divided into three types: aluminum shell battery cell, soft package battery cell (also known as "polymer battery cell"), and cylindrical battery cell.

[0093] As an example, the battery monomer includes a battery cell formed by taking a positive sheet and a negative sheet as an electrochemical material carrier, preventing short circuit by isolating the positive and negative sheets through a separator, taking an electrolyte as an ion transmission carrier, achieving structural protection through a shell, and connecting with an external circuit through a terminal to form a battery cell.

[0094] As an example, the battery disclosed in the embodiments of the present application can be used in, but is not limited to, electrical equipment such as vehicles, ships, or aircraft. The power supply system of the electrical equipment can be composed of the battery monomer and the battery disclosed in the present application.

[0095] The embodiments of the present application provide a kind of electrical equipment using battery monomer as power supply, and the electrical equipment can be, but not limited to, mobile phone, tablet computer, notebook computer, electric toy, electric tool, electric bicycle, electric motorcycle, electric vehicle, ship, spacecraft and the like.Electric toy can include fixed or mobile electric toy, for example, game machine, electric car toy, electric ship toy and electric aircraft toy and the like, spacecraft can include aircraft, rocket, space shuttle and spacecraft and the like.

[0096] It should also be noted that the terms "comprises" and / or "comprising", or "includes" and / or "including" when used in this specification, specify the presence of stated features, integers, steps, operations, elements, or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof. In the context of the specification, the term "and / or" means "and" or "or", and the term "or" means "and" or "or". In the context of the specification, the term "exemplary" means "example" or "an example of".

[0097] Each of the embodiments in the specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other. Each of the embodiments focuses on the difference from other embodiments. In particular, for the system embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the part of the method embodiments.

[0098] The above only describes the embodiments of the present application and is not intended to limit the present application. Those skilled in the art can make various modifications and changes to the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

[0099] Although the embodiments of the present application are described in conjunction with the drawings, those skilled in the art can make various modifications and changes without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. A bending mechanism for bending a nickel tab of a battery cell so that the nickel tab is welded to a circuit board, characterized by, The bending mechanism comprises: a base for placing the battery cell and the circuit board; a first plate part movably arranged on the base along a first direction; wherein the first plate part is provided with a plurality of first tooth heads arranged in sequence along a second direction, each of the first tooth heads is arranged opposite to a corresponding nickel sheet of the battery cell along the first direction, so as to stop and bend the corresponding nickel sheet of the battery cell when the first plate part moves towards the battery cell, and the first direction, the second direction and the thickness direction of the base are perpendicular to each other.

2. The folding mechanism of claim 1, wherein The plurality of first tooth heads are arranged at intervals along the second direction to form a first avoiding space.

3. The bending mechanism according to claim 2, wherein Each of the first tooth heads comprises a first tooth head body and a first bending part, the first bending part is located at one end of the first tooth head body away from the base along the thickness direction of the base, and the first bending part protrudes from the first tooth head body towards the side of the battery cell along the first direction.

4. The folding mechanism of claim 1, wherein The bending mechanism further comprises a first pushing part arranged on the base, a driving end of the first pushing part is connected with the first plate part to drive the first plate part to move along the first direction.

5. The folding mechanism of claim 1, wherein The bending mechanism further comprises a second plate part arranged on the base, the second plate part is arranged opposite to and at intervals with the first plate part along the first direction; the second plate part is provided with a plurality of second tooth heads arranged in sequence along the second direction, each of the second tooth heads is arranged opposite to a corresponding nickel sheet of the battery cell along the first direction, so as to stop and bend the corresponding nickel sheet of the battery cell when the second plate part moves opposite to the battery cell.

6. The bending mechanism according to claim 5, wherein The plurality of second tooth heads are arranged at intervals along the second direction to form a second avoiding space.

7. The bending mechanism according to claim 6, wherein Each of the second tooth heads comprises a second tooth head body and a second bending part, the second bending part is located at one end of the second tooth head body away from the base along the thickness direction of the base, and the second bending part protrudes from the second tooth head body towards the side of the battery cell along the first direction.

8. The bending mechanism of claim 5, wherein, The bending mechanism further comprises a pushing block movably arranged on the base, the pushing block is arranged on one side of the battery cell away from the first plate part along the first direction, so as to help the battery cell to move along the first direction.

9. The bending mechanism of claim 8, wherein, The bending mechanism further comprises a limiting block arranged on the base, the limiting block is arranged on one side of the pushing block away from the first plate part along the first direction, so as to limit the movement of the pushing block along the first direction.

10. The bending mechanism of claim 1, wherein The bending mechanism further comprises a first holding block and a second holding block, the first holding block and the second holding block are arranged opposite to and at intervals with each other along the second direction, so as to hold the battery cell.

Images