Glue-potted sealed capacitor and method for identifying shell orientation during assembly process

Abstract

The present application relates to a glue-potted sealed capacitor, comprising a housing, a capacitor body, and a boss. The housing has a cavity inside and an opening at one end. The capacitor body is a dual-body capacitor or a multi-body capacitor. The capacitor body is placed inside the housing cavity through the opening. The polarizer of the capacitor body extends out of the housing through the cavity opening. Glue is poured into the side of the capacitor body near the cavity opening, and the glue seals the side of the capacitor body near the cavity opening with the housing cavity. Polarity markings are provided on the outer wall of the housing, and a boss is provided on the inner wall of the housing. The boss is located in the gap between each two adjacent capacitor cells in the capacitor body or in the gap between the capacitor body and the inner wall of the housing cavity, and corresponds to at least one polarity marking on the outer wall of the housing, so that the boss represents the position of the polarity marking on the outer wall of the housing. The present application relates to a glue-potted sealed capacitor, comprising a housing, a capacitor body, and a boss. The housing has a cavity inside and a cavity outside, and a boss is provided. The boss corresponds to at least one polarity marking on the outer wall of the housing, so that the boss represents the position of the polarity marking on the outer wall of the housing. The present application relates to a glue-potted sealed capacitor, comprising a housing, a capacitor body, and a boss. ...

Description

Technical Field

[0001] The present disclosure relates to the field of electronic devices, and in particular to a potting and sealing capacitor and a method for identifying the direction of its shell during its assembly process. Background Art

[0002] Since dual / multi-body capacitors and their casings both have polarity requirements, they must be aligned when installed in the casing. Capacitor polarity identification is often performed using the inherent length of the positive and negative pins. However, due to the size limitations and pre- and post-processing / production restrictions of the casing, it is difficult to design a structurally accurate identification rate. Therefore, image recognition is often used. However, this method has a certain misidentification rate and is relatively costly. Summary of the Invention

[0003] In view of this, the present disclosure proposes a method for identifying the shell direction of a potted sealed capacitor and its assembly process, which is particularly suitable for direction judgment in automatic production processes, and has low process and equipment costs, good processability, and improved production efficiency and reliability.

[0004] According to one aspect of the present disclosure, a potted and sealed capacitor is provided, comprising a housing, a capacitor body, and a boss, wherein a cavity is provided inside the housing and an opening is provided at one end;

[0005] The capacitor body is a dual-body capacitor or a multi-body capacitor; wherein the dual-body capacitor contains two capacitor cells, and the multi-body capacitor contains more than two capacitor cells;

[0006] The capacitor body is placed inside the cavity of the shell through the opening;

[0007] The pole pin of the capacitor body extends out of the housing from the opening of the cavity;

[0008] A glue is poured into a side of the capacitor body close to the cavity opening, and the glue is used to seal the side of the capacitor body close to the cavity opening with the housing cavity;

[0009] The outer side wall of the shell is provided with a polarity mark, and the inner side wall of the shell is provided with a boss;

[0010] The boss is located in the gap between each two adjacent capacitor cells in the capacitor body or in the gap between the capacitor body and the inner wall of the shell cavity, and corresponds to at least one polarity mark on the outer wall of the shell, so that the boss represents the position of the polarity mark on the outer wall of the shell.

[0011] In a possible implementation, the capacitor cells in the capacitor body are connected in series in sequence.

[0012] In a possible implementation, the number of the boss is one;

[0013] wherein the boss corresponds to one of the polarity marks on the outer side wall of the housing;

[0014] The surface of the boss is lower than the opening of the cavity of the shell.

[0015] In a possible implementation, the boss includes a first boss and a second boss;

[0016] The opening of the cavity of the housing is in the shape of a straight slot;

[0017] Wherein, the first boss and the second boss are arranged opposite to each other;

[0018] The first boss is provided at a gap on one side of the capacitor body, and the second boss is provided at a gap on the other side of the capacitor body;

[0019] The shapes of the first boss and the second boss match the gap of the capacitor body.

[0020] In a possible implementation, the boss includes a third boss and a fourth boss;

[0021] The opening of the cavity of the housing is rectangular;

[0022] Wherein, the third boss and the fourth boss are located opposite to each other;

[0023] The third boss is arranged at a short side of one side of the shell, and the fourth boss is arranged at a short side of the other side of the shell;

[0024] The third boss is in the shape of a square column, and a curved surface is provided on a side of the third boss facing the capacitor body, the curved surface is recessed toward the side away from the capacitor body, and the curved surface matches the capacitor body;

[0025] The third boss and the fourth boss have the same shape.

[0026] In a possible implementation, the polarity identifier includes a positive polarity identifier and a negative polarity identifier;

[0027] The positive polarity mark and the negative polarity mark are located on the same side of the outer wall of the housing, and the electrode needles of the capacitor body include a positive electrode needle and a negative electrode needle;

[0028] The positive polarity mark is arranged on the same side as the positive electrode needle of the capacitor body, and the negative polarity mark is arranged on the same side as the negative electrode needle of the capacitor body.

[0029] In a possible implementation, the boss and the housing are integrally formed.

[0030] According to another aspect of the present disclosure, a method for identifying the direction of the shell of a potting-sealed capacitor during assembly is provided, wherein a mechanical jack is used to identify the direction of the shell of the potting-sealed capacitor during assembly according to any one of claims 1 to 7.

[0031] Wherein, the mechanical ejector includes a detection block, an ejector rod and an ejector pin;

[0032] The detection block, the ejector rod and the ejector pin are connected in sequence;

[0033] The size and shape of the bottom surface of the ejector pin match the size and shape of the cavity from the boss to the opening of the housing; the bottom surface of the ejector pin is the end surface of the ejector pin that is not connected to the ejector rod;

[0034] The method of using the mechanical ejector pin to identify the shell direction of the potted and sealed capacitor includes:

[0035] Place one side of the mechanical ejector pin into the housing cavity along the housing opening until the mechanical ejector pin contacts the boss;

[0036] Rotate the mechanical ejector pin 180 degrees with the height direction of the ejector pin as the axis, and place the rotated mechanical ejector pin into the cavity of the housing along the housing opening until the rotated mechanical ejector pin contacts the boss;

[0037] The position of the detection block is identified twice. When the detection block is at a low position, the polarity direction of the housing is correct. When the detection block is at a high position, the polarity direction of the housing is wrong.

[0038] In a possible implementation, there is one push rod, and the push rod is in the shape of a round rod;

[0039] The number of the detection block is one, and the detection block is in the shape of a rectangle.

[0040] According to another aspect of the present disclosure, a method for identifying the direction of the shell of a potting-sealed capacitor during assembly is provided, wherein a mechanical top with a dual recognition mode is used to identify the direction of the shell of the potting-sealed capacitor during assembly according to any one of claims 1 to 7;

[0041] The mechanical ejector in the dual recognition mode includes a first mechanical ejector and a second mechanical ejector;

[0042] The first mechanical ejector includes a first ejector pin, a first ejector rod and a first detection block in sequence;

[0043] The second mechanical ejector includes a second ejector, a second ejector rod and a second detection block in sequence;

[0044] The side wall of the first ejector pin matches the inner wall of the housing in the direction of the long axis, and the second ejector pin matches the inner wall of the housing on the other side in the direction of the long axis;

[0045] The surface of the first ejector pin that is not in contact with the inner wall of the housing is in contact with the surface of the second ejector pin that is not in contact with the inner wall of the housing, and the first ejector pin and the second ejector pin are slidably connected;

[0046] The method of using the mechanical ejector pin in the dual recognition mode to identify the shell direction of the potted and sealed capacitor includes:

[0047] The first mechanical ejector pin and the second mechanical ejector pin are placed into the housing along the housing opening. The first detection block and the second detection block on the first mechanical ejector pin and the second mechanical ejector pin will appear one high and one low, and the high and low positions of the first detection block and the second detection block correspond to the polarity of the housing.

[0048] The glue-filled sealed capacitor of the embodiment of the present disclosure is covered with a shell to cover the capacitor body, and the side part of the capacitor body is exposed to the air. The shell is provided with a cavity that matches the shape of the capacitor body, and one end is provided with an opening, and the capacitor body is installed inside the cavity of the shell through the opening. The capacitor body includes a capacitor body and a pole pin. The capacitor body is used to store and release current, and the pole pin is used to conduct current from an object such as a circuit board. The height of the capacitor body should be less than the depth of the cavity of the shell, so that there is a certain distance between the highest point of the capacitor body and the opening of the shell, so that the capacitor body is completely placed inside the cavity of the shell, and the pole pin should be able to extend from the opening of the shell into the cavity of the shell to facilitate welding of the pole pin and the circuit board. After the capacitor body is installed in the shell, the capacitor body and the inner wall of the shell cavity are in a plug-in state, and the capacitor body and the inner wall of the shell cavity are in a clearance fit or overfit state, so that the capacitor body can be firmly installed in the cavity of the shell. Filling with glue can improve the sealing of the glue-filled sealed capacitor of the embodiment of the present disclosure and reduce the influence of moisture. The inner wall of the housing is provided with a boss, and it should be noted that the position of the boss does not affect the installation of the capacitor body. The polarity marking on the outer wall of the housing cooperates with the boss to determine the polarity of the housing during assembly. The method of using the boss to determine the polarity direction of the housing can reduce the manufacturing process and equipment costs of the potted and sealed capacitor of the embodiment of the present disclosure because the boss is low-cost and simple to set up. Other features and aspects of the present disclosure will become clear from the detailed description of the exemplary embodiments below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the disclosure and, together with the description, serve to explain the principles of the disclosure.

[0050] Figure 1 A schematic diagram showing the main structure of the housing of a glue-potted and sealed capacitor device according to an embodiment of the present disclosure is shown;

[0051] Figure 2 A schematic structural diagram of a potting and sealing capacitor device according to an embodiment of the present disclosure is shown;

[0052] Figure 3 A structural diagram showing a capacitor body of a potting and sealing capacitor device according to an embodiment of the present disclosure;

[0053] Figure 4 Another structural schematic diagram showing a glue-potted sealed capacitor device according to an embodiment of the present disclosure;

[0054] Figure 5 Another structural schematic diagram showing a glue-potted sealed capacitor device according to an embodiment of the present disclosure;

[0055] Figure 6 Another structural schematic diagram showing a glue-potted sealed capacitor device according to an embodiment of the present disclosure;

[0056] Figure 7 A diagram showing a three-body capacitor structure of a potting and sealing capacitor device according to an embodiment of the present disclosure;

[0057] Figure 8 A schematic structural diagram showing a single ejector pin recognition mode according to an embodiment of the present disclosure is shown;

[0058] Figure 9 A schematic diagram showing the structure of a double ejector pin recognition mode according to an embodiment of the present disclosure is shown;

[0059] Figure 10 Another structural schematic diagram showing a single ejector pin recognition mode according to an embodiment of the present disclosure;

[0060] Figure 11 Another structural schematic diagram of the single ejector pin recognition mode of an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0061] Various exemplary embodiments, features, and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

[0062] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0063] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0064] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0065] In addition, numerous specific details are provided in the following detailed description to better illustrate the present disclosure. Those skilled in the art will appreciate that the present disclosure can be practiced without certain specific details. In some instances, methods, means, components, and circuits well known to those skilled in the art are not described in detail in order to highlight the main points of the present disclosure.

[0066] Figure 1 1 is a schematic diagram showing the main structure of a casing 100 of a potted and sealed capacitor according to an embodiment of the present disclosure. Figure 2 FIG. 1 is a schematic diagram showing the structure of a potting and sealing capacitor according to an embodiment of the present disclosure. Figure 1 or Figure 2 As shown, the glue-potted sealed capacitor includes a shell 100, a capacitor body 200, and a boss 300. The shell 100 is provided with a cavity inside and an opening at one end. The capacitor body 200 is a dual-body capacitor or a multi-body capacitor, wherein the dual-body capacitor contains two capacitor cells, and the multi-body capacitor contains more than two capacitor cells. The capacitor body 200 passes through the opening of the shell 100 and is placed inside the cavity of the shell 100. The shape of the cavity of the shell 100 matches the shape of the capacitor body 200. The capacitor body 200 includes an electrically connected capacitor body and a pole pin, and the pole pin extends from the shell 100 at the opening of the cavity. The side of the capacitor body close to the cavity opening is poured with glue, and the glue seals the side of the capacitor body close to the cavity opening with the shell cavity. A polarity mark 400 is provided on the outer wall of the shell 100, and a boss 300 is provided on the inner wall of the shell 100. The boss 300 is located in the gap between each adjacent capacitor unit in the capacitor body 200 or in the gap between the capacitor body 200 and the inner wall of the cavity of the shell 100, and corresponds to at least one polarity mark 400 on the outer wall of the shell 100, so that the boss 300 represents the position of the polarity mark 400 on the outer wall of the shell 100.

[0067] like Figure 4 、 Figure 5 、 Figure 6 or Figure 7 As shown, it should be noted that the cross-section of the opening of the housing 100 can be a square shape, a D shape, an ellipse, etc., which is not limited here.

[0068] like Figure 1 or Figure 2As shown, the potted and sealed capacitor of the embodiment of the present disclosure is covered with a shell 100 to cover the capacitor body 200, so that the side portion of the capacitor body 200 is not exposed to the air. The shell 100 is provided with a cavity that matches the shape of the capacitor body 200, and an opening is provided at one end. The capacitor body 200 is installed inside the cavity of the shell 100 through the opening. The capacitor body 200 further includes a capacitor body and a pole needle. The capacitor body is used to store and release current, and the pole needle is used to conduct current from an object such as a circuit board. The height of the capacitor body should be less than the depth of the cavity of the shell 100, so that a certain distance is provided between the highest point of the capacitor body and the opening of the shell 100, so that the capacitor body is completely placed inside the cavity of the shell 100, and the pole needle should be able to extend from the opening of the shell 100 to the cavity of the shell 100 to facilitate welding of the pole needle and the circuit board. After the capacitor body 200 is installed in the housing 100, the capacitor body 200 and the inner wall of the cavity of the housing 100 are in an inserted state, and the capacitor body 200 and the inner wall of the cavity of the housing 100 are in a clearance fit or overfit state, so that the capacitor body 200 can be firmly installed in the cavity of the housing 100. The filling of the glue can improve the sealing of the glue-potted sealed capacitor of the embodiment of the present disclosure and reduce the influence of moisture. The inner wall of the housing 100 is provided with a boss 300, and it should be noted here that the position of the boss 300 does not affect the installation of the capacitor body 200. The polarity mark 400 on the outer wall of the housing 100 cooperates with the boss 300 to determine the polarity of the housing 100 during the assembly process. The method of using the boss 300 to determine the polarity direction of the housing 100 can reduce the manufacturing process and equipment costs of the glue-potted sealed capacitor of the embodiment of the present disclosure because the cost of providing the boss 300 is low and the process is simple.

[0069] It should also be noted that the polarity mark 400 can protrude from or be recessed into the outer wall of the housing 100, and can be intaglio, embossed, or a combination of intaglio and embossing, without limitation. The polarity mark 400 can be integrally formed with the housing 100 or produced by printing, photolithography, or other methods.

[0070] It should also be noted that letters and text are also provided on the outer wall of the housing 100. These letters and text indicate information such as the specifications of the capacitor body 200, thereby providing a more intuitive display of information about the capacitor body 200. The letters and text may be intaglio, relief, or a combination of intaglio and relief, without limitation. The letters and text may be integrally formed with the housing 100 or may be produced by printing, photolithography, or other methods.

[0071] It should also be noted that the adhesive is a fast-curing adhesive, and capacitor body 200 is a supercapacitor. Supercapacitors are particularly suitable for the disclosed embodiments due to their small size. The fast-curing adhesive allows the adhesive to cure quickly after filling, reducing production time.

[0072] It should also be noted that the adhesive can also be a two-component silicone rubber, a two-component epoxy resin, a one-component adhesive, or a multi-component adhesive, or a light-curing adhesive. However, a fast-curing adhesive is preferred, and one with a hydrophobic surface should be selected. This maximizes production efficiency while reducing external moisture ingress, further minimizing the effects of moisture.

[0073] like Figure 1 or Figure 3 As shown, in a possible implementation, one boss 300 is provided, and two or more capacitor cells of the capacitor body 200 are connected in series.

[0074] The required operating voltage is achieved by connecting two or more capacitor cells in series, which can be achieved by welding. The shape of the boss 300 can match the gap of the capacitor body, be rectangular, etc., which is not limited here.

[0075] In a possible implementation, there is one boss 300 , wherein the boss 300 corresponds to one of the polarity marks 400 on the outer wall of the housing 100 , and the surface of the boss 300 is lower than the opening of the cavity of the housing 100 .

[0076] like Figure 1 or Figure 2 As shown, in one possible implementation, there are two or more bosses 300, and the two or more capacitor cells of the capacitor body 200 can be connected in series. The two or more bosses 300 are set at different heights, and the two or more bosses 300 are set in the gap of the capacitor body 200 or on the outside of the capacitor body 200, and the two or more bosses 300 are not in the same gap of the capacitor body 200 or the gap between the capacitor body 200 and the inner wall of the cavity of the shell 100. It should be pointed out here that the height position of the boss 300 is not limited, and it is only necessary to ensure that the setting position of the boss 300 is reasonable.

[0077] Furthermore, in one possible implementation, two bosses 300 are provided, including a first boss 310 and a second boss 320. The cavity of the housing 100 is cylindrical, and the opening on the cavity of the housing 100 is in the shape of a straight slot. The first boss 310 is provided in the gap on one side of the capacitor body 200, and the second boss 320 is provided in the gap on the other side of the capacitor body 200, that is, the first boss 310 and the second boss 320 are provided opposite each other. The shapes of the first boss 310 and the second boss 320 match the gap of the capacitor body 200. It should be noted here that the height of the boss 300 is distinguishable from the polarity mark 400, and does not mean that the first boss 310 and the second boss 320 must correspond to a certain polarity mark 400 on a certain side.

[0078] like Figure 3 or Figure 11 As shown, in one possible implementation, two bosses 300 are provided, including a third boss 330 and a fourth boss 340. The cavity of the housing 100 is cylindrical, and the opening in the cavity of the housing 100 is square. The third boss 330 is arranged on one short side of the housing 100, and the fourth boss 340 is arranged on the other short side of the housing 100, that is, the third boss 330 and the fourth boss 340 are arranged opposite each other. The third boss 330 is square-cylindrical and matches the housing cavity. The side of the third boss 330 facing the capacitor body 200 has a curved surface, which is recessed toward the side away from the capacitor body 200 and matches the capacitor body 200. This structure can better meet actual usage conditions and optimize the structure of the housing 100. The third boss 330 and the fourth boss 340 have the same shape.

[0079] It should be noted that the third and fourth bosses 330 and 340 may or may not be connected to the bottom of the housing 100, and this is not a limitation. However, it is preferred that the third and fourth bosses 330 and 340 be connected to the bottom of the housing 100, thereby reducing the glue filling space during glue filling.

[0080] It should also be noted that the distance from the top of the third boss 300 to the opening of the housing 100 is between one-seventh and one-third of the height of the housing 100, preferably one-fifth. The distance from the top of the fourth boss 340 to the opening of the housing 100 is between one-fifth and two-thirds of the height of the housing 100, preferably one-quarter. This further optimizes the structure of the potted and sealed capacitor according to the disclosed embodiment.

[0081] like Figure 1 or Figure 2As shown, in one possible implementation, polarity marker 400 includes a positive polarity marker 410 and a negative polarity marker 420. Positive polarity marker 410 and negative polarity marker 420 are located on the same side of housing 100, and the polarity pins of capacitor body 200 include a positive pin and a negative pin. Positive polarity marker 410 is located on the same side as the positive pin of capacitor body 200, and negative polarity marker 420 is located on the same side as the negative pin of capacitor body 200. It should be noted that there is only one positive pin and only one negative pin, and the positive and negative pins are located on different outer sides of capacitor body 200.

[0082] In one possible implementation, the boss 300 is integrally formed with the housing 100. It should be noted that the housing 100 and the boss 300 can be integrally formed using an injection molding process. The housing 100 and the boss 300 can be made of materials such as engineering plastics, polycarbonate, polypropylene, soluble polytetrafluoroethylene, and injection-molded rubber, without limitation. It should also be noted that the housing 100 and the boss 300 can also be made of a metal housing 100, and the housing 100 and the boss 300 can be integrally formed using a casting process. This can improve the strength and lifespan of the potted and sealed capacitor according to the disclosed embodiment.

[0083] In one possible implementation, the capacitor body includes a rubber plug, an aluminum shell and a core package. The interior of the aluminum shell is hollow and has an opening at one end. The core package is placed into the hollow interior of the aluminum shell from the opening and is fixedly connected to the side wall of the aluminum shell. The rubber plug is provided at the opening of the aluminum shell, and the rubber plug is fixedly connected to the inner wall of the aluminum shell at the opening and closes the opening of the aluminum shell. The pole needle is provided through the rubber plug and extends out of the rubber plug away from one end of the rubber plug. When there is a pole needle, the pole needle near one end of the aluminum shell is electrically connected to the core package. Because the height of the capacitor body 200 is less than the height of the shell cavity, the rubber plug is inside the cavity of the shell 100, and a distance is provided between the rubber plug and the opening of the shell 100. After filling the glue, the glue should completely cover the side of the rubber plug close to the opening of the shell 100. By doing so, the rubber plug can further prevent the electrolyte in the core package from leaking out.

[0084] like Figure 1 or Figure 8As shown, based on any of the aforementioned glue-potted sealed capacitors, the present disclosure further provides a method for identifying the direction of the housing 100 during the assembly process of the glue-potted sealed capacitor. Among them, the method for identifying the direction of the housing 100 during the assembly process of the glue-potted sealed capacitor in the embodiment of the present disclosure uses a mechanical ejector pin 500 to identify the aforementioned glue-potted sealed capacitor. The mechanical ejector pin 500 includes a detection block 530, an ejector pin 520, and an ejector pin 510 connected in sequence. The first side of the ejector pin 510 is fixedly connected to the ejector pin 520, and the size and shape of the second side of the ejector pin 510 match the size and shape of the cavity from the top of the boss 300 to the top of the housing 100. The side of the ejector pin 520 away from the ejector pin 510 is fixedly connected to the detection block 530. The steps for using a mechanical ejector pin 500 to identify a potted, sealed capacitor are as follows: First, insert one side of the ejector pin 510 of the mechanical ejector pin 500 into the cavity of the housing 100 along the opening of the housing 100 until the ejector pin 500 contacts the boss 300. Then, rotate the mechanical ejector pin 500 180 degrees about the height of the ejector pin 520 and insert the rotated mechanical ejector pin 500 into the cavity of the housing 100 along the opening of the housing 100 until the rotated mechanical ejector pin 500 contacts the boss 300. The position of the detection block 530 is identified twice. When the detection block 530 is low, the polarity direction of the housing 100 is correct; when the detection block 530 is high, the polarity direction of the housing 100 is incorrect.

[0085] The present invention employs a design for a potted, sealed capacitor structure, in which a boss 300 is provided on the inner wall of the cavity of the housing 100, and a mechanical ejector pin 500 is used to determine the polarity of the housing 100. This identification method is particularly suitable for automated or semi-automated production of the potted, sealed capacitors of the disclosed embodiment. By placing the mechanical ejector pin 500 twice within the cavity of the housing 100 (rotating the second time), an external device detects the position of the detection block 530 to determine the polarity of the housing 100. This improves production efficiency and reliability.

[0086] like Figure 10 As shown, it should be noted that when the cross-section of the cavity of the housing 100 along the opening direction is D-shaped, the housing 100 does not need to be provided with the boss 300. The polarity direction of the housing 100 can be determined by using the D-shaped ejector pin 510, the size of which matches the size of the cavity of the housing 100. The determination method is the same as above, and the polarity of the housing 100 is determined by detecting the height of the detection block 530.

[0087] Furthermore, in one possible implementation, mechanical ejector 500 operates in a single-recognition mode, i.e., one ejector pin 520 is provided, and is in the shape of a round rod, and one detection block 530 is provided, and is in the shape of a rectangular body. It should be noted that the central axis of ejector pin 520 is located at the center of the surface of ejector pin 510 that connects to ejector pin 520. The central axis of ejector pin 520 passes through the center of detection block 530.

[0088] like Figure 1 or Figure 9 As shown, based on any of the aforementioned potted and sealed capacitors, the present disclosure further provides a method for identifying the orientation of the housing 100 during the assembly process of the potted and sealed capacitor. A dual-recognition mechanical ejector 500 is used to identify the orientation of the housing 100 during the assembly process. The dual-recognition mechanical ejector 500 includes a first mechanical ejector and a second mechanical ejector. The first mechanical ejector includes, in sequence, a first ejector pin 511, a first ejector rod 521, and a first detection block 531. The second mechanical ejector includes, in sequence, a second ejector pin 512, a second ejector rod 522, and a second detection block 532. The sidewall of the first ejector pin 511 mates with the inner wall of the housing 100 along the longitudinal axis, while the second ejector pin 512 mates with the inner wall of the housing 100 on the other side of the longitudinal axis. The surface of the first ejector pin 511 not in contact with the inner wall of the housing 100 mates with the surface of the second ejector pin 512 not in contact with the inner wall of the housing 100, and the first ejector pin 511 and the second ejector pin 512 are slidably connected. The dual-recognition mode mechanical ejector 500 identifies the orientation of the casing 100 of a potted and sealed capacitor. The process involves inserting a first mechanical ejector and a second mechanical ejector into the casing 100 along the opening of the casing. A first detection block 531 and a second detection block 532 on the first and second mechanical ejectors will appear one high and one low. The height of the first detection block 531 and the second detection block 532 correspond to the polarity of the casing 100. This determines whether the polarity of the casing 100 and the capacitor body 200 correspond when the capacitor body 200 is assembled.

[0089] In one possible embodiment, the cavity of housing 100 is cylindrical, and the opening of the cavity is in the shape of a straight notch. The boss 300 includes a high boss and a low boss. The high boss is located in the gap on one side of the capacitor body 200, and the low boss is located in the gap on the other side of the capacitor body 200. Accordingly, the ejector pin 510 of the dual-recognition mode mechanical ejector pin 500 includes a first ejector pin 511 and a second ejector pin 512. The first ejector pin 511 is in the shape of a semi-straight notch column divided by its long axis and is positioned corresponding to the high boss. The outer wall of the first ejector pin 511 is aligned with the inner wall of the cavity of housing 100, and the bottom surface of the first ejector pin 511 is aligned with the top surface of the high boss. The first ejector pin 511 extends out of the opening of the cavity of housing 100. The second ejector pin 512 is shaped like a semi-straight columnar opening divided by its long axis. The second ejector pin 512 is positioned corresponding to the low boss. The outer wall of the second ejector pin 512 is aligned with the inner wall of the cavity of the housing 100, and the bottom surface of the second ejector pin 512 is aligned with the top surface of the low boss. The second ejector pin 512 extends out of the opening of the cavity of the housing 100. The height of the first ejector pin 511 is equal to the height of the second ejector pin 512. The ejector pin 520 includes a first ejector pin 521 and a second ejector pin 522. The first ejector pin 521 is fixedly connected to the side of the first ejector pin 511 away from the housing 100, and the second ejector pin 522 is fixedly connected to the side of the second ejector pin 512 away from the housing 100. The height of the first ejector pin 521 is equal to the height of the second ejector pin 522. The detection block 530 includes a first detection block 531 and a second detection block 532, and the first detection block 531 is rectangular. The second detection block 532 is identical in shape and size to the first detection block 531. The first detection block 531 is fixedly connected to the first ejector pin 521 on the side away from the first ejector pin 511. The second detection block 532 is fixedly connected to the second ejector pins 522 on both sides away from the second ejector pin 512. The height of the first detection block 531 is equal to the height of the second detection block 532. The first ejector pin 521 and the second detection block 532 do not interfere with each other.

[0090] Therefore, when one of the first detection block 531 and the second detection block 532 is high and the other is low, the polarity of the housing 100 can be determined according to the high and low positions of the first detection block 531 and the second detection block 532 .

[0091] like Figure 1 、 Figure 2 or Figure 8As shown, the present invention employs a potted, sealed capacitor structure employing a housing 100 with an internal boss 300. External equipment can determine the polarity of housing 100 by detecting the height of a detection block 530 on a mechanical ejector pin 500. This identification and judgment provides feedback, allowing the capacitor body 200 to adjust to the orientation consistent with the polarity of housing 100. This structure facilitates relative positioning of housing 100 and capacitor, and the polarity indicator 400 is placed directly on the housing 100 during the injection molding or stamping process. This makes it particularly suitable for determining orientation during automated production processes, while also reducing process and equipment costs.

[0092] While various embodiments of the present disclosure have been described above, the above descriptions are illustrative, non-exhaustive, and not intended to be limiting of the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or improvements to existing technologies, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A potting sealed capacitor, characterized by: It includes a shell, a capacitor body and a boss, wherein a cavity is provided inside the shell and an opening is provided at one end; The capacitor body is a multi-body capacitor; wherein the multi-body capacitor comprises more than two capacitor cells; The capacitor body is placed inside the cavity of the shell through the opening; The pole pin of the capacitor body extends out of the housing from the opening of the cavity; A glue is poured into a side of the capacitor body close to the cavity opening, and the glue is used to seal the side of the capacitor body close to the cavity opening with the housing cavity; A polarity mark is provided on the outer wall of the shell, and a boss is provided on the inner wall of the shell, and the boss cooperates with a mechanical ejector pin to determine the polarity of the shell; The boss is located in the gap between each two adjacent capacitor cells in the capacitor body or in the gap between the capacitor body and the inner wall of the shell cavity, and corresponds to at least one polarity mark on the outer wall of the shell, so that the boss represents the position of the polarity mark on the outer wall of the shell.

2. The potting and sealing capacitor according to claim 1, characterized in that: The capacitor cells in the capacitor body are connected in series in sequence.

3. The potting sealed capacitor according to claim 1, characterized in that: The number of the boss is one; The boss corresponds to one of the polarity marks on the outer side wall of the shell; and the surface of the boss is lower than the opening of the cavity of the shell.

4. The potting and sealing capacitor according to claim 1, characterized in that: The boss includes a first boss and a second boss; The opening of the cavity of the housing is in the shape of a straight slot; Wherein, the first boss and the second boss are arranged opposite to each other; The first boss is provided at a gap on one side of the capacitor body, and the second boss is provided at a gap on the other side of the capacitor body; The shapes of the first boss and the second boss match the gap of the capacitor body.

5. The potting and sealing capacitor according to claim 1, characterized in that: The bosses include a third boss and a fourth boss; The opening of the cavity of the housing is rectangular; Wherein, the third boss and the fourth boss are located opposite to each other; The third boss is arranged at a short side of one side of the shell, and the fourth boss is arranged at a short side of the other side of the shell; The third boss is in the shape of a square column, and a curved surface is provided on a side of the third boss facing the capacitor body, the curved surface is recessed toward a side away from the capacitor body, and the curved surface matches the capacitor body; The third boss and the fourth boss have the same shape.

6. The potting sealed capacitor according to any one of claims 1 to 5, characterized in that: The polarity mark includes a positive polarity mark and a negative polarity mark; The positive polarity mark and the negative polarity mark are located on the same side of the outer wall of the housing, and the electrode needles of the capacitor body include a positive electrode needle and a negative electrode needle; The positive polarity mark is arranged on the same side as the positive electrode needle of the capacitor body, and the negative polarity mark is arranged on the same side as the negative electrode needle of the capacitor body.

7. The potting and sealing capacitor according to any one of claims 1 to 5, characterized in that: The boss is integrally formed with the shell.

8. A method for identifying the shell direction during the assembly process of a potting-sealed capacitor, characterized by: A mechanical top is used to identify the direction of the shell during the assembly process of the potting and sealing capacitor according to any one of claims 1 to 7; Wherein, the mechanical ejector includes a detection block, an ejector rod and an ejector pin; The detection block, the ejector rod and the ejector pin are connected in sequence; The size and shape of the bottom surface of the ejector pin match the size and shape of the cavity from the boss to the opening of the housing; the bottom surface of the ejector pin is the end surface of the ejector pin that is not connected to the ejector rod; The method of using the mechanical ejector pin to identify the shell direction of the potted and sealed capacitor includes: Place one side of the mechanical ejector pin into the housing cavity along the housing opening until the mechanical ejector pin contacts the boss; Rotate the mechanical ejector pin 180 degrees with the height direction of the ejector pin as the axis, and place the rotated mechanical ejector pin into the cavity of the housing along the housing opening until the rotated mechanical ejector pin contacts the boss; The position of the detection block is identified twice. When the detection block is at a low position, the polarity direction of the housing is correct. When the detection block is at a high position, the polarity direction of the housing is wrong.

9. The method for identifying the shell direction during the assembly process of a potting-sealed capacitor according to claim 8, characterized in that: The number of the push rod is one, and the push rod is in the shape of a round rod; The number of the detection block is one, and the detection block is in the shape of a rectangle.

10. A method for identifying the shell direction during the assembly process of a potting-sealed capacitor, characterized by: A mechanical top with a dual recognition mode is used to identify the shell direction during the assembly process of the potting and sealing capacitor according to any one of claims 1 to 7; The mechanical ejector in the dual recognition mode includes a first mechanical ejector and a second mechanical ejector; The first mechanical ejector includes a first ejector pin, a first ejector rod and a first detection block in sequence; The second mechanical ejector includes a second ejector, a second ejector rod and a second detection block in sequence; The side wall of the first ejector pin matches the inner wall of the housing in the long axis direction, and the second ejector pin matches the inner wall of the housing on the other side in the long axis direction; The surface of the first ejector pin that is not in contact with the inner wall of the housing is in contact with the surface of the second ejector pin that is not in contact with the inner wall of the housing, and the first ejector pin and the second ejector pin are slidably connected; The method of using the mechanical ejector pin in the dual recognition mode to identify the shell direction of the potted and sealed capacitor includes: The first mechanical ejector pin and the second mechanical ejector pin are placed into the housing along the housing opening. The first detection block and the second detection block on the first mechanical ejector pin and the second mechanical ejector pin will appear one high and one low, and the high and low positions of the first detection block and the second detection block correspond to the polarity of the housing.

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