Nickel-hydrogen battery sealing device

Abstract

The utility model relates to the technical field of nickel-hydrogen batteries, in particular to a nickel-hydrogen battery sealing device which comprises a buckling and pressing mechanism, a sealing mechanism and a sealing mechanism, the transfer mechanism is used for fixing and transferring the battery, so that the end part of the bottle body of the battery extends into the sealing mold; wherein the sealing mold is annularly arranged and comprises at least four extrusion blocks of a fan-shaped structure, the extrusion blocks are spliced together to form an annular shape, the inner diameter of the extrusion blocks is matched with the diameter of a seal, and the extrusion blocks are configured to be far away from one another in an initial state and are separated from one another when the end of a bottle body extends into the center position of the sealing mold. The extrusion blocks are close to each other under the action of external force and tightly press the top of the battery to be sealed, so that the high polymer material in the pole is deformed to be attached to the pole for sealing. Through the arrangement, the stress at the sealing part of the battery is more uniform, so that a better sealing effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of nickel-metal hydride battery technology, and in particular to a nickel-metal hydride battery sealing device. Background Technology

[0002] To ensure that the electrolyte and active materials inside the nickel-metal hydride battery do not leak and to maintain a stable internal environment, the nickel-metal hydride battery is often sealed after the electrolyte is injected into the cell.

[0003] The existing battery sealing device seals the battery by using semi-ring frames set at opposite ends of two electric telescopic rods, which close together to seal the battery.

[0004] However, the above sealing methods are prone to uneven sealing, which can lead to sealing failure. Utility Model Content

[0005] In view of at least one of the above technical problems, the present invention provides a nickel-metal hydride battery sealing device, which adopts structural improvements to enhance the uniformity of the sealing.

[0006] According to a first aspect of the present invention, a nickel-metal hydride battery sealing device is provided, comprising:

[0007] A clamping mechanism having a sealing mold arranged laterally;

[0008] A transfer mechanism is used to fix and transfer the battery so that the end of the battery bottle extends into the sealing mold;

[0009] The sealing mold is arranged in a ring and includes at least four extrusion blocks with a fan-shaped structure. When the extrusion blocks are assembled together, they form a ring with an inner diameter that matches the sealing diameter. The extrusion blocks are configured to be far apart from each other in the initial state. When the bottle end extends into the center of the sealing mold, the extrusion blocks move closer to each other under the action of external force and press against the top of the battery to be sealed, so that the polymer material inside the electrode post deforms and adheres to the electrode post for sealing.

[0010] In some embodiments of this utility model, the external force is a hydraulic cylinder, which is driven by an electric pump.

[0011] In some embodiments of this utility model, the extrusion block is L-shaped, including a fan-shaped extrusion part and a guide part arranged perpendicular to the extrusion part. The guide part is arc-shaped like a tile, and the guide parts on multiple extrusion blocks can be spliced ​​together to form a complete tubular structure.

[0012] In some embodiments of this utility model, the guide portion has a guide hole that is vertically oriented toward the extrusion center.

[0013] In some embodiments of this utility model, the transfer mechanism includes a bracket, and the bottom of the bracket has casters.

[0014] In some embodiments of this utility model, the bottom of the bracket also has a support adjustment component, which adjusts the support height by means of screw connection.

[0015] In some embodiments of this utility model, the top of the bracket also has a lifting layer, the lifting layer including a guide column fixed on the bracket, a first support plate connected to the top of the guide column, and a lifting drive component fixed on the bracket and connected to the first support plate.

[0016] In some embodiments of this utility model, the top of the lifting layer also has a rotating layer, the rotating layer including a rotating connecting seat fixed on the first support plate, a second support plate connected to the rotating connecting seat, and a support ball rotatably disposed on the top of the first support plate for rolling connection with the second support plate.

[0017] In some embodiments of this utility model, the top of the rotating layer also has a propulsion layer, the propulsion layer including a third support plate, a slide rail arranged parallel to the third support plate along the length direction of the third support plate, and a battery placement block that is slidably arranged on the slide rail, the battery placement block having a placement groove.

[0018] In some embodiments of this utility model, the bottom of the third support plate also has a lifting limit post that passes through the second support plate, and the lifting limit post is used to contact the first support plate to limit the rotation of the second support plate.

[0019] The beneficial effects of this utility model are as follows: This utility model moves the part of the battery bottle that needs to be sealed to the pressing mechanism through the transfer mechanism. The extrusion blocks in the ring mold come closer to each other and squeeze the sealing part 360 degrees, so that the polymer material deforms and fits the electrode. Compared with the prior art, the force at the battery sealing part in this utility model is more uniform, thereby achieving a better sealing effect. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1This is a schematic diagram of the nickel-metal hydride battery sealing device in an embodiment of this utility model;

[0022] Figure 2 This is a schematic diagram of the sealing mold in an embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of the extrusion process of the sealing mold in an embodiment of this utility model;

[0024] Figure 4 This is a schematic diagram of the extrusion block in an embodiment of the present invention;

[0025] Figure 5 As an embodiment of this utility model Figure 4 Schematic diagram of the AA-direction cross-section structure;

[0026] Figure 6 This is a schematic diagram of the transfer mechanism in an embodiment of the present utility model;

[0027] Figure 7 This is a schematic diagram of the exploded disassembly structure of the transfer mechanism in an embodiment of this utility model;

[0028] Figure 8 This is a schematic diagram of the propulsion layer in an embodiment of the present invention.

[0029] Explanation of reference numerals in the attached drawings: 1. Crimping mechanism; 11. Sealing mold; 111. Extrusion block; 111a. Extrusion section; 111b. Guide section; 111b1. Guide hole; 2. Transfer mechanism; 21. Bracket; 21a. Caster wheel; 21b. Support adjustment component; 22. Lifting layer; 22a. Lifting drive component; 22b. Guide column; 22c. First support plate; 23. Rotating layer; 23a. Rotating connecting seat; 23b. Second support plate; 23c. Support ball; 24. Pushing layer; 24a. Third support plate; 24b. Slide rail; 24c. Battery placement block; 24c1. Placement slot; 24d. Lifting limit column. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0031] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0032] 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 invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] like Figures 1 to 8 The nickel-metal hydride battery sealing device shown includes a clamping mechanism 1 and a transfer mechanism 2, as detailed below. Figure 1 As shown, the clamping mechanism 1 has a horizontally arranged sealing mold 11; the transfer mechanism 2 is used to fix and transfer the battery, so that the end of the battery bottle extends into the sealing mold 11; specifically as follows... Figure 2 and Figure 3 As shown, the sealing mold 11 is arranged in a ring shape, including at least four fan-shaped extrusion blocks 111. When the extrusion blocks 111 are assembled together, they form a ring, and the inner diameter is adapted to the sealing diameter. The extrusion blocks 111 are configured to be far apart from each other in the initial state. When the end of the bottle extends into the center position of the sealing mold 11, the extrusion blocks 111 move closer together under the action of external force and press against the top of the battery to be sealed, so that the polymer material inside the terminal post deforms and adheres to the terminal post for sealing. In the specific sealing operation of the battery bottle, the battery is first placed on the transfer mechanism 2 by a lifting device, and then the part of the battery bottle to be sealed is inserted into the sealing mold 11. The close proximity of the extrusion blocks 111 causes the part of the battery bottle to be sealed to deform and fit tightly against the terminal post, thereby realizing the sealing operation.

[0034] In the above embodiment, the battery bottle body to be sealed is moved to the pressing mechanism 1 by the transfer mechanism 2. The extrusion blocks 111 in the annular mold come closer to each other and squeeze the sealing area 360 degrees, so that the polymer material deforms and fits the electrode. Compared with the prior art, the force at the battery sealing area in this utility model is more uniform, thereby achieving a better sealing effect.

[0035] Based on the above embodiments, the external force used to control the inward retraction of the extrusion block 111 is a hydraulic cylinder, which is driven by an electric pump. This hydraulic drive provides a stable thrust, thereby ensuring product quality stability and reducing rework rates. In some embodiments of this invention, the polymer material can be a sealing sleeve made of high-density polyethylene.

[0036] Optionally, such as Figure 4 and Figure 5 As shown, in some embodiments of this utility model, the extrusion block 111 is L-shaped, including a fan-shaped extrusion portion 111a and a guide portion 111b perpendicularly arranged to the extrusion portion 111a. The guide portion 111b is arc-shaped like a tile, and the guide portions 111b on multiple extrusion blocks 111 can be spliced ​​together to form a complete tubular structure. The guide portion 111b guides the movement of the extrusion block 111, and this guidance can be achieved using a sliding plate; in some embodiments of this utility model, such as... Figure 5 As shown, the guide portion 111b has a guide hole 111b1 vertically oriented towards the extrusion center. The guide hole 111b1 allows a guide rod to pass through it, guiding the movement of the extrusion block 111. This guiding function further ensures the accuracy of the sealing extrusion, thereby guaranteeing the reliability of the seal. In this embodiment, the sealing pressure resistance is tested to be greater than 1450 Psi, and the leakage (helium detection) is less than 2.298 × 10⁻⁴ mbar*L / s (pure helium).

[0037] In the embodiments of this utility model, the specific structure of the transfer mechanism 2 is as follows: Figure 6 As shown, the transfer mechanism 2 includes a bracket 21, and the bottom of the bracket 21 has casters 21a. The casters 21a allow for easy movement of the transfer mechanism 2, resulting in smoother movement of the battery. Please refer to... Figure 6 The bottom of the bracket 21 also has a support adjustment component 21b, which adjusts the support height by screwing. Specifically, a support plate is welded to the bottom of a stud, and the stud is screwed to the bottom of the bracket 21. By rotating the stud, the support height of the stud can be adjusted. On the one hand, it can adapt to various ground environments, and on the other hand, it can also play a supporting role. The support adjustment component 21b prevents the movement of the casters 21a.

[0038] Furthermore, to adjust the height of the support, please continue to refer to... Figure 6The top of the bracket 21 also has a lifting layer 22, which includes a guide post 22b fixed to the bracket 21, a first support plate 22c connected to the top of the guide post 22b, and a lifting drive component 22a fixed to the bracket 21 and connected to the first support plate 22c. The drive component can have various structural forms; for example, it can be a conventional motor screw structure to lift the first support plate 22c, or it can use other conventional lifting structures in the art, such as a jack. By setting up the lifting layer 22, the support height for the battery can be adjusted, thereby accommodating various types of batteries or improving the alignment accuracy with the sealing mold 11.

[0039] like Figure 7 As shown in the embodiment of this utility model, the top of the lifting layer 22 also has a rotating layer 23. The rotating layer 23 includes a rotating connecting seat 23a fixed on the first support plate 22c, a second support plate 23b connected to the rotating connecting seat 23a, and a support ball 23c rotatably disposed on the top of the first support plate 22c for rolling connection with the second support plate 23b. The rotating connecting seat 23a can be a bearing. By connecting the first support plate 22c and the second support plate 23b through the bearing, the second support plate 23b can be rotated at any angle, thereby making it easier to place the battery. The setting of the support ball 23c can improve the supporting force of the second support plate 23b and further reduce the friction during rotation.

[0040] Optionally, such as Figure 8 As shown, the top of the rotating layer 23 also has a pushing layer 24. The pushing layer 24 includes a third support plate 24a, a slide rail 24b parallel to the length direction of the third support plate 24a, and a battery placement block 24c slidably disposed on the slide rail 24b. The battery placement block 24c has a placement groove 24c1. In an embodiment of this utility model, the placement groove 24c1 is configured as a flared structure, thereby enabling stable placement of battery bottles of various sizes. Through the sliding connection between the battery placement block 24c and the slide rail 24b, the battery bottle can be precisely moved along a straight line, thus facilitating the placement of the battery bottle after height and angle adjustments. Figure 8 and Figure 1 As shown, the bottle end can be precisely inserted into the sealing mold 11 by pushing.

[0041] Please continue to refer to Figure 8In some embodiments of this utility model, the bottom of the third support plate 24a also has a lifting limit post 24d that passes through the second support plate 23b. The lifting limit post 24d is used to contact the first support plate 22c to limit the rotation of the second support plate 23b. The lifting limit post 24d can have various structural forms, such as using a cylinder or a hydraulic cylinder. Those skilled in the art can also use other conventional lifting forms. By contacting the lifting limit post 24d with the first support plate 22c, the friction force when the second support plate 23b rotates can be increased, achieving the effect of stopping rotation. Through this structural form, the stability during sealing can be further improved.

[0042] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A sealing device for a nickel-metal hydride battery, characterized in that, The utility model relates to a battery sealing device, which comprises: a buckle mechanism with a transversely arranged sealing die; a transfer mechanism for fixing and transferring the battery so that the end of the bottle body of the battery extends into the sealing die; wherein the sealing die is arranged in a ring shape and comprises at least four fan-shaped extrusion blocks that are combined together to form a ring shape with an inner diameter matching the sealing diameter, the extrusion blocks are configured to be away from each other in an initial state, and when the end of the bottle body extends into the center position of the sealing die, the extrusion blocks are close to each other and press the top of the battery to be sealed under the action of an external force, so that the internal polymer material of the pole post is deformed to fit and seal the pole post.

2. The nickel-hydrogen battery closure device of claim 1, wherein, The external force is a hydraulic cylinder driven by an electric pump.

3. The nickel-hydrogen battery closure device of claim 1, wherein, The extrusion blocks are L-shaped and comprise a fan-shaped extrusion part and a guide part arranged perpendicularly to the extrusion part, the guide part is in the shape of an arc-shaped tile, and the guide parts on the plurality of extrusion blocks can be spliced into a complete tubular structure.

4. The nickel-hydrogen battery closure device of claim 3, wherein, The guide part has a guide hole arranged vertically towards the extrusion center.

5. The nickel-hydrogen battery closure device of claim 1, wherein, The transfer mechanism comprises a support, and the bottom of the support has universal wheels.

6. The nickel-hydrogen battery closure device of claim 5, wherein, The bottom of the support also has a support adjusting member that adjusts the support height by screwing.

7. The nickel-hydrogen battery closure device of claim 5, wherein the sealing member is made of a material selected from the group consisting of rubber, plastic, and a combination thereof. The top of the support also has a lifting layer, which comprises a guide column fixed on the support, a first support plate connected to the top of the guide column, and a lifting driving member fixed on the support and connected to the first support plate.

8. The nickel-hydrogen battery closure device of claim 7, wherein, The top of the lifting layer also has a rotating layer, which comprises a rotating connecting seat fixed on the first support plate, a second support plate connected to the rotating connecting seat, and a support rolling ball rotatably arranged on the top of the first support plate for rolling connection with the second support plate.

9. The nickel-hydrogen battery closure of claim 8, wherein, The top of the rotating layer also has a propulsion layer, which comprises a third support plate, a sliding rail arranged on the third support plate in parallel along the length direction of the third support plate, and a battery placing block arranged on the sliding rail in a slidable manner, the battery placing block has a placing groove.

10. The nickel-hydrogen battery closure device of claim 9, wherein, The bottom of the third support plate also has a lifting limiting column arranged through the second support plate, which is used to contact the first support plate to limit the rotation of the second support plate.

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