Battery sealing mechanism and battery sealing equipment

Abstract

The utility model relates to a battery sealing mechanism which comprises a sealing assembly used for sealing a battery; the fixing assembly is used for fixing the battery, the fixing assembly comprises a base and at least two locking pieces, the base is provided with moving structures corresponding to the locking pieces in number, the moving structures are evenly distributed around the battery fixing position with the battery fixing position on the base as the center, and the extending direction of the moving structures passes through the battery fixing position; and when the at least two locking pieces move to one end, close to the battery fixing position, of the moving structure, the at least two locking pieces clamp and fix the battery. Due to the fact that the moving structure is arranged on the base, the locking piece can move along the specific track through the moving structure, the position of the locking piece is no longer indeterminable but can be accurately limited on the track during sealing, the matching fineness between the sealing assembly and the fixing assembly in the sealing process is greatly improved, and the sealing effect is improved. And the battery shell is prevented from being damaged by clamping. The utility model further relates to battery sealing equipment.

Description

Technical Field

[0001] This application relates to the technical field of battery production, and particularly to a battery sealing mechanism and a battery sealing device. Background Art

[0002] During the production process of batteries, a sealing process needs to be completed. The purpose of battery sealing is to effectively seal the inside of the battery to ensure that substances such as the positive electrode, negative electrode, and electrolyte inside the battery are not interfered with or leaked from the outside, thereby improving the performance and lifespan of the battery.

[0003] The sealing process is achieved through a sealing mechanism. When sealing a battery, the battery needs to be fixed. However, in existing sealing mechanisms, when clamping and fixing the battery, it is easy to damage the battery shell and leave clamping marks on the battery shell. Utility Model Content

[0004] To solve the problem that the existing sealing mechanism is prone to damaging the battery shell, this application provides a battery sealing mechanism and a battery sealing device.

[0005] In the first aspect of this application, a battery sealing mechanism is provided, including:

[0006] A sealing component for sealing the battery;

[0007] A fixing component for fixing the battery. The fixing component includes a base and at least two locking members. The base is provided with a moving structure corresponding to the number of the locking members. The moving structure is evenly distributed around the battery fixing position on the base with the battery fixing position on the base as the center, and the extending direction of the moving structure passes through the battery fixing position;

[0008] When at least two of the locking members move to the end of the moving structure close to the battery fixing position, at least two of the locking members clamp and fix the battery.

[0009] Optionally, the moving structure is a slide rail, and the locking member is provided with a chute matching the slide rail.

[0010] Optionally, the base is provided with a reset component for resetting the locking member to the end of the moving structure away from the battery fixing position.

[0011] Optionally, the reset component includes a reset rod and a surrounding portion. The surrounding portion surrounds the battery fixing position. The reset rod passes through the surrounding portion and is connected to the locking member. An elastic element is provided on the reset rod. One end of the elastic element abuts against the surrounding portion, and the other end abuts against the outer end of the reset rod.

[0012] Optionally, the sealing assembly includes a mounting base, a pressing head and a sleeve. When the sealing assembly moves towards the fixing assembly, the locking member moves towards the battery fixing position under the restraint of the sleeve.

[0013] Optionally, a chamfer is provided at the contact position between the locking member and the sleeve.

[0014] Optionally, one end of the sleeve in contact with the locking member is provided with a conical surface, and the conical surface cooperates with the chamfer.

[0015] Optionally, the sleeve, the pressing head and the mounting base are coaxially arranged.

[0016] Optionally, the sleeve is sleeved on the protruding part of the mounting base. The height of the sleeve is greater than or equal to the sum of the height of the protruding part, the protruding height of the pressing head and the height of the part where the locking member cooperates. The cooperating part is the part where the locking member enters the cavity of the sleeve when the battery is clamped and fixed.

[0017] Optionally, the number of the locking members is 3, and the base is provided with 3 moving structures. An included angle of 120 degrees is formed between adjacent moving structures.

[0018] In a second aspect of the present application, a battery sealing device is provided, including the battery sealing mechanism according to any one of the embodiments provided in the first aspect of the present application.

[0019] Advantages and beneficial effects of the present application:

[0020] The battery sealing mechanism provided by the present application includes: a sealing assembly for sealing the battery; a fixing assembly for fixing the battery. The fixing assembly includes a base and at least 2 locking members. The base is provided with moving structures corresponding to the number of the locking members. The moving structures are evenly distributed around the battery fixing position on the base with the battery fixing position on the base as the center, and the extending direction of the moving structures passes through the battery fixing position; when at least 2 locking members move to one end of the moving structure close to the battery fixing position, at least 2 locking members clamp and fix the battery. Since the moving structures are provided on the base, the locking members can move along a specific track through the moving structures. Therefore, during sealing, the position of the locking members is no longer uncertain, but can be accurately limited on the track, which greatly improves the matching fineness between the sealing assembly and the fixing assembly during the sealing process and avoids damaging the battery shell. Description of the Drawings

[0021] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the attached drawings required for use in the embodiments. It should be understood that the following attached drawings only show some embodiments of the present utility model and should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other relevant attached drawings can also be obtained based on these attached drawings.

[0022] Figure 1 It is a sectional perspective view of the battery sealing mechanism in the embodiment of the present utility model;

[0023] Figure 2 It is a schematic structural diagram of the chassis of the battery sealing mechanism in the embodiment of the present utility model;

[0024] Figure 3 It is a sectional view of the battery sealing mechanism in the embodiment of the present utility model when the locking member does not clamp the battery;

[0025] Figure 4 It is a schematic structural diagram of the fixing component in the embodiment of the present utility model when the locking member does not clamp the battery;

[0026] Figure 5 It is a sectional view of the battery sealing mechanism in the embodiment of the present utility model when the locking member clamps the battery;

[0027] Figure 6 It is a schematic structural diagram of the fixing component in the embodiment of the present utility model when the locking member clamps the battery.

[0028] Icon: 100 - Sealing component; 110 - Mounting seat; 111 - Substrate; 112 - Protrusion; 120 - Sleeve; 121 - Conical surface; 130 - Press head; 200 - Fixing component; 210 - Base; 211 - Slide rail; 212 - Enclosure part; 213 - Through hole; 220 - Locking member; 221 - Chamfer; 230 - Reset rod; 240 - Elastic element; 300 - Battery housing; A - Height of the protrusion; B - Protrusion height of the press head; C - Height of the locking member mating part. Detailed implementation manners

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the attached drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and shown in the attached drawings here can be arranged and designed in various different configurations.

[0030] Accordingly, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0031] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0032] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is customarily placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set" and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] The battery needs to complete the sealing process during production. The battery sealing aims to effectively seal the inside of the battery to ensure that substances such as the positive electrode, negative electrode, and electrolyte inside the battery are not interfered with and leaked by the outside, thereby improving the performance and lifespan of the battery.

[0035] The sealing process is realized by a sealing mechanism. When sealing the battery, the battery needs to be fixed. However, the applicant has found that in the existing sealing mechanism, when clamping and fixing the battery, it is easy to clamp and damage the battery housing 300, leaving a clamping mark on the battery housing 300.

[0036] The applicant studied this problem and found that the reason for this problem is that when the upper die and the lower die of the sealing mechanism are closed for sealing, the position of the locking member 220 for fixing the battery cannot be determined, or after production for a period of time, the position of the locking member 220 has shifted.

[0037] To solve this problem, the present application provides a battery sealing mechanism, which can improve the matching fineness between the sealing component 100 and the fixing component 200, and avoid the problem of pinching the battery case 300.

[0038] It can be understood that the battery sealing mechanism provided by the present application can seal various batteries, such as cylindrical batteries, square batteries, etc. In one embodiment, the battery sealing mechanism provided by the present application can be a cylindrical battery sealing mechanism.

[0039] For reference Figures 1-6 , the battery sealing mechanism provided by the present application includes a sealing component 100 and a fixing component 200. Among them, the sealing component 100 can also be called an upper mold, which can move in the height direction and is used to seal the battery. The fixing component 200 can also be called a lower mold, which is used to fix the battery and can cooperate with the sealing component 100 to complete the sealing of the battery after the battery is fixed. The sealing component 100 and the fixing component 200 cooperate to seal the battery, and this process can also be called mold closing.

[0040] The fixing component 200 can include a base 210 and at least two locking members 220. The at least two locking members 220 can be used to clamp and fix the battery. A moving structure corresponding to the number of the locking members 220 is arranged on the base 210. It can be understood that if the number of the locking members 220 is 2, the number of the moving structures is also 2; if the number of the locking members 220 is 3, the number of the moving structures is also 3.

[0041] A battery fixing position can be arranged on the base 210. This position is the position where the battery is fixed. Centered on this position, moving structures evenly distributed around this position can be arranged. The moving structures can provide a linear track, so that the locking members 220 can move along this linear track, and the extending direction of this linear track passes through the battery fixing position.

[0042] In one embodiment, as Figure 2 shown, the base 210 can be generally in a disc structure. The battery fixing position can be arranged at the center of the disc, and a through hole matching the shape of the battery case 300 can be arranged at this center position, so that the battery can pass through this through hole during fixation, playing a certain limiting role in the position of the battery.

[0043] In one embodiment, the number of the locking members 220 is 2, and the number of the moving structures is 2. The moving structures can be symmetrically distributed on both sides of the battery fixing position. In other words, the two moving structures can be on the same straight line, forming an included angle of 180 degrees therebetween. Thus, when fixing the battery, the two locking members 220 can move to one end of the moving structure close to the battery fixing position, that is, the two locking members 220 move towards the battery fixing position simultaneously, and clamp and fix the battery from both sides.

[0044] In one embodiment, the number of the locking members 220 is 3, and the number of the moving structures is 3. The moving structures can be evenly distributed around the battery fixing position, and an included angle of 120 degrees is formed between two adjacent moving structures. Thus, when fixing the battery, the three locking members 220 can move to one end of the moving structure close to the battery fixing position, and the three locking members 220 move towards the battery fixing position simultaneously, and clamp and fix the battery from three sides.

[0045] The battery sealing mechanism provided by the present application includes: a sealing assembly 100 for sealing the battery; a fixing assembly 200 for fixing the battery. The fixing assembly 200 includes a base 210 and at least two locking members 220. The base 210 is provided with moving structures corresponding to the number of the locking members 220. The moving structures are evenly distributed around the battery fixing position on the base 210 with the battery fixing position on the base 210 as the center, and the extending direction of the moving structures passes through the battery fixing position; when at least two locking members 220 move to one end of the moving structure close to the battery fixing position, at least two locking members 220 clamp and fix the battery. Since the moving structures are provided on the base 210, the locking members 220 can move along a specific track through the moving structures. Therefore, during sealing, the position of the locking members 220 is no longer uncertain, but can be accurately limited on the track, which greatly improves the matching fineness between the sealing assembly 100 and the fixing assembly 200 during the sealing process, and avoids pinching the battery housing 300.

[0046] In one embodiment, the sealing assembly 100 may include a mounting base 110, a pressing head 130 and a sleeve 120. The sleeve 120 is connected to the mounting base 110, and the pressing head 130 is connected to the mounting base 110. Among them, the sleeve 120 is sleeved outside the pressing head 130.

[0047] As Figure 1 shown, in one embodiment, the mounting base 110 may include a substrate 111, and a protruding portion 112 extends downward from the substrate 111. The pressing head 130 is arranged on the protruding portion 112, and the sleeve 120 is sleeved on the outer periphery of the protruding portion 112. Among them, the sleeve 120, the pressing head 130 and the mounting base 110 may be coaxially arranged. With this structure, the coaxiality of the sealing assembly 100 can be guaranteed, so as to avoid the problem of "crooked neck" (the heights of each point of the battery are different) of the battery after sealing.

[0048] In one embodiment, the sleeve 120 of the sealing assembly 100 can cooperate with the locking members 220 of the fixing assembly 200, enabling each locking member 220 to converge towards the battery fixing position under the constraint of the sleeve 120. Specifically, when the sealing assembly 100 moves downward, the sleeve 120 at the bottom of the sealing assembly 100 contacts the outer edge of the top of each locking member 220, pressing the locking members 220 to move towards the battery fixing position. After the locking members 220 converge, they are received into the cavity of the sleeve 120, and at this time, the battery is also effectively clamped and fixed, as Figure 5 and Figure 6 shown.

[0049] In one embodiment, as Figure 3 shown, a chamfer 221 can be provided at the contact between the locking member 220 and the sleeve 120 to ensure that the locking member 220 can move towards the battery fixing position under the pressure of the sleeve 120. Further, an inner conical surface 121 can be provided at the open end where the sleeve 120 contacts the locking member 220. By the cooperation of the inner conical surface 121 and the chamfer 221 at the top of the locking member 220, more precise guidance is achieved.

[0050] There are various ways to implement the movement of the locking member 220 through the moving structure. In one embodiment, the moving structure can be a chute, that is, a protruding slider can be provided at the bottom of the locking member 220, and the slider matches the shape of the chute to achieve the sliding connection between the locking member 220 and the moving structure. In one embodiment, as Figure 1 shown, the moving structure can be a slide rail 211. Correspondingly, a chute matching the slide rail 211 can be provided at the bottom of the locking member 220, so that the locking member 220 can slide on the slide rail 211. In one embodiment, the moving structure can be a slide rail 211, and a pulley can be provided at the bottom of the locking member 220 to achieve the sliding connection.

[0051] In one embodiment, a reset assembly can be provided on the base 210, and this reset assembly can reset the locking members 220, that is, enable the locking members 220 to automatically move to the end of the slide rail 211 away from the battery fixing position, so that the battery is disengaged from the clamped and fixed state, realizing continuous production. Specifically, during sealing, the sealing assembly 100 presses down, the sleeve 120 contacts each locking member 220, and each locking member 220 converges towards the battery fixing position under the constraint of the sleeve 120, clamping and fixing the battery. After sealing is completed, the sealing mechanism moves upward, and each locking member 220 disengages from the cavity of the sleeve 120. At this time, each locking member 220 can move away from the battery fixing position under the action of the reset assembly, and the battery is no longer clamped and fixed, as Figure 4 shown. At this time, the battery that has been sealed can be withdrawn, and a new battery to be sealed can be sent in for sealing.

[0052] In one embodiment, the reset assembly may include a reset rod 230 and a surrounding portion 212. The surrounding portion 212 may surround the periphery of the battery fixing position and enclose each locking member 220 and the moving structure therein. A through hole 213 is provided on the surrounding portion 212, and the reset rod 230 may pass through the through hole 213 to be connected to the locking member 220. An elastic element 240 may be provided on the portion of the reset rod 230 outside the surrounding portion 212. One end of the elastic element 240 abuts against the surrounding portion 212, and the other end abuts against the outer end portion of the reset rod 230. Of course, the reset assembly may also be implemented in other ways. For example, one end of the elastic element may be connected to the surrounding portion 212 and the other end to the locking member 220. When the locking member 220 moves toward the battery fixing position under the constraint of the sleeve 120, the elastic element is tightened. When the locking member 220 is no longer constrained by the sleeve 120, the locking member 220 moves away from the battery fixing position under the tension of the elastic element to complete the reset. In one embodiment, the elastic element may be a spring, an elastic tendon or other elements.

[0053] To ensure that the locking member 220 can clamp the battery housing 300 before the pressing head 130 contacts the battery housing 300 and ensure the consistency of the sealing effect, in one embodiment, reference may be made to Figure 5 , the height of the sleeve 120 may be greater than or equal to the sum of the heights of the following three: the height A of the protruding portion of the mounting seat 110, the protruding height B of the pressing head, and the height C of the locking member mating portion. The mating portion specifically refers to the portion of the locking member 220 that enters the cavity of the sleeve 120 when the battery is clamped and fixed, that is, the portion where the sleeve 120 and the locking member 220 cooperate.

[0054] The battery sealing mechanism provided by this application includes: a sealing component 100 for sealing the battery; a fixing component 200 for fixing the battery. The fixing component 200 includes a base 210 and at least two locking members 220. The base 210 is provided with a moving structure corresponding to the number of the locking members 220. The moving structure is evenly distributed around the battery fixing position on the base 210 with the battery fixing position on the base 210 as the center, and the extending direction of the moving structure passes through the battery fixing position. When at least two locking members 220 move to one end of the moving structure close to the battery fixing position, at least two locking members 220 clamp and fix the battery. Since the moving structure is provided on the base 210, the locking members 220 can move along a specific track through the moving structure. Therefore, during sealing, the position of the locking members 220 is no longer uncertain, but can be accurately limited on the track, which greatly improves the cooperation fineness between the sealing component 100 and the fixing component 200 during the sealing process and avoids pinching the battery case 300. In addition, by providing a coaxial mounting seat 110, a sleeve 120 and a pressing head 130 in the sealing component 100, the coaxiality of the sealing component 100 is ensured, and the problem of "crooked neck" (the heights of different points of the battery are different) of the battery after sealing can be solved. Moreover, by providing a reset component on the base 210, the locking members 220 can be automatically reset after sealing is completed, realizing continuous production.

[0055] This application also provides a battery sealing device, including the battery sealing mechanism provided by any embodiment of this application.

[0056] For the technical features provided in the above embodiments, as long as there is no conflict or contradiction, those skilled in the art can combine each technical feature according to the actual situation to form various different embodiments. However, due to space limitations in this application document, various different embodiments are not elaborated. It can be understood that various different embodiments also belong to the scope disclosed by the embodiments of this application.

[0057] The above-described embodiments only represent several implementation manners of this application. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of this application, several deformations and improvements can still be made, and these all belong to the protection scope of this application. Therefore, the protection scope of the patent of this application should be subject to the appended claims.

Claims

1. A battery sealing mechanism, characterized in that: include: A sealing assembly (100), used for sealing a battery; A fixing assembly (200) for fixing the battery, the fixing assembly (200) comprising a base (210) and at least two locking elements (220), the base (210) being provided with movable structures corresponding to the number of the locking elements (220), the movable structures being evenly distributed around the battery fixing position with the battery fixing position on the base (210) as the center, and the extension direction of the movable structures passing through the battery fixing position; When at least two of the locking members (220) move to one end of the movable structure close to the battery fixing position, at least two of the locking members (220) clamp and fix the battery.

2. The battery sealing mechanism according to claim 1, characterized in that: The movable structure is a slide rail (211), and the locking element (220) is provided with a slide groove matching the slide rail (211).

3. The battery sealing mechanism according to claim 1, characterized in that: The base (210) is provided with a reset component, and the reset component is used to reset the lock (220) to an end of the mobile structure away from the battery fixing position.

4. The battery sealing mechanism according to claim 3, characterized in that: The reset assembly comprises a reset rod (230) and a surrounding portion (212); the surrounding portion (212) is arranged around the battery fixing position; the reset rod (230) passes through the surrounding portion (212) and is connected to the lock (220); an elastic element (240) is arranged on the reset rod (230); one end of the elastic element (240) abuts against the surrounding portion (212), and the other end abuts against the outer end of the reset rod (230).

5. The battery sealing mechanism according to claim 1, characterized in that: The sealing assembly (100) comprises a mounting seat (110), a pressing head (130) and a sleeve (120); the sealing assembly is located above the fixing assembly; when the sealing assembly (100) moves toward the fixing assembly (200), the locking element (220) moves toward the battery fixing position under the constraint of the sleeve (120).

6. The battery sealing mechanism according to claim 5, characterized in that: A chamfer (221) is provided at the contact point between the locking element (220) and the sleeve (120).

7. The battery sealing mechanism according to claim 6, characterized in that: One end of the sleeve (120) that contacts the locking element (220) is provided with a conical surface (121), and the conical surface (121) matches the chamfer (221).

8. The battery sealing mechanism according to claim 5, characterized in that: The sleeve (120), the pressure head (130) and the mounting seat (110) are coaxially arranged.

9. The battery sealing mechanism according to claim 5, characterized in that: The sleeve (120) is sleeved on the protruding portion (112) of the mounting seat (110), and the height of the sleeve (120) is greater than or equal to the sum of the following three factors: The height of the protrusion (112), the protruding height of the pressure head (130) and the height of the matching portion of the lock (220), wherein the matching portion is the portion of the lock (220) that enters the cavity of the sleeve (120) when the battery is clamped and fixed.

10. A battery sealing device, characterized in that: It comprises a battery sealing mechanism as described in any one of claims 1 to 9.

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