JP6183007B2 - Capacitor module and manufacturing method thereof - Google Patents

Description

The present invention relates to a capacitor module including a plurality of capacitors and a method for manufacturing the same.

  In a device such as an automobile that uses electric energy for driving and braking, a capacitor is used to store electric energy. Since the capacitor has excellent rapid charge / discharge characteristics, it is suitable for devices such as automobiles that require quick start and braking.

  In order to cope with the electric power required for starting and braking on the on-board equipment side, when a large capacity is required for the capacitor, the necessary capacity and high voltage can be increased by using a plurality of capacitors. In this case, a capacitor module in which a plurality of capacitors are assembled is used.

In such a capacitor module, it is known that a plurality of capacitors are covered with a case member (for example, Patent Document 1). In addition, it is known that an insulating resin is filled between a capacitor and a case member to form a capacitor module that insulates the capacitor and is firmly fixed inside the case member (for example, Patent Document 2 and Patent Document 2). 3). On the other hand, the capacitor module is required to be lightened as well as insulated. However, when the insulating resin is filled, although the fixing strength and the insulating property are increased, the weight reduction is hindered. Therefore, a capacitor module that is not filled with an insulating resin has been studied (for example, Patent Document 4). In a capacitor module with multiple capacitors, the circuit board on which the circuit pattern is formed is connected to the capacitor in order to achieve the desired capacity and withstand voltage by connecting the multiple capacitors in series, parallel, or series-parallel connection. It is mounted on the module.

JP 2008-204988 A JP 2010-87269 A JP 2007-14085 A JP-A-2005-94942

  By the way, a capacitor used in such a capacitor module has a capacitor element inserted into a bottomed cylindrical outer case formed of aluminum, and a sealing plate in which external terminals are integrally molded is disposed in an opening of the outer case. The sealing plate is fixed and sealed by forming a sealing curling part. This sealing curling part is a curled part. If such a force that deforms the curved portion is applied, the sealing strength of the sealing plate by the sealing curling portion may change.

  In the capacitor module, a plurality of capacitors are attached to the case member. This mounting is performed by inserting each capacitor into the housing portion of the case member. There is a possibility that stress is applied to the outer case of each capacitor inserted into the case member at the time of mounting. If this stress acts on the sealing curling portion described above and the sealing curling portion is pressed and stress is applied, the sealing strength of the exterior case deteriorates, and there is a problem in that the capacitor performance decreases. Therefore, an inner diameter of the housing portion of the case member is molded larger than an outer diameter of the capacitor to form a gap between the housing portion and the capacitor. By adopting such a structure, when the capacitor is inserted into the storage unit or fixed to the capacitor module, the sealing curling unit does not come into contact with the storage unit, and the stress load on the sealing curling unit can be reduced. . However, by forming a gap between the storage portion and the capacitor, the fixing of the capacitor to the case member depends on the connection between the external terminal or auxiliary terminal provided on the sealing plate and the case member. In that case, the vibration applied when the capacitor module is used may vibrate using the external terminal or auxiliary terminal of the capacitor as a fulcrum, and stress may be applied to the auxiliary terminal or external terminal, leading to a decrease in connectivity and fixability.

An object of the present invention is to avoid stress on the sealing curling portions of a plurality of capacitors and improve the fixing force.

In order to achieve the above object, a capacitor module of the present invention is a capacitor module including a case member having a storage portion for storing a plurality of capacitors, wherein a notch portion is formed in the case member, and an inner wall of the storage portion A gap is formed between the capacitor and the capacitor, a fixing member is disposed in the gap, and the fixing member surrounds the periphery of the capacitor, and an annular portion is formed in an intersecting direction from the annular portion. a wedge portion that is, is formed in the annular portion includes an engagement portion engaged with the cutout portion, the engaging portion Ru engaged with the fixing member to the case member.

In order to achieve the above object, a capacitor module of the present invention is a capacitor module including a case member having a storage portion for storing a plurality of capacitors, wherein the case member covers a terminal side of the capacitor. And a second case portion that is connected to the first case portion and covers the bottom side of the capacitor, and has a gap between the inner wall portion of the storage portion and the capacitor, and the gap A fixing member is disposed on the first case portion side, and the fixing member includes an annular portion that surrounds the periphery of the capacitor, and a wedge portion that is formed from the annular portion in a direction intersecting the annular portion. .

In the capacitor module, the fixing member forms a protrusion in a portion of the inner peripheral surface of the annular portion and the inner peripheral surface of the projecting portion and the inner peripheral surface of the wedge portion is connected, The same inner peripheral surface may be formed .

In the capacitor module, the second case portion may include a locking portion that is inserted between the first case portion and the capacitor .

In order to achieve the above object, a method for manufacturing a capacitor module according to the present invention is a method for manufacturing a capacitor module including a case member having a storage portion for storing a plurality of capacitors, wherein notches are formed in the case member. A fixing member having an engaging portion that engages with the notch is attached to the outer case of the capacitor, the capacitor is attached to the case member together with the fixing member, and the inner wall of the case member and the capacitor The fixing member is disposed therebetween, and the engaging portion is engaged with the notch portion.

In order to achieve the above object, a method for manufacturing a capacitor module according to the present invention is a method for manufacturing a capacitor module including a case member having a storage portion for storing a plurality of capacitors, wherein the case member is on the terminal side of the capacitor. A first case portion that covers the first case portion, and a second case portion that is connected to the first case portion and covers the bottom side of the capacitor, and a fixing member is attached to the outer case of the capacitor, and the fixing member the wearing capacitor to said casing member, placing said first of said fixing member to the case portion side between the inner wall and the capacitor of the case member with.

  According to the present invention, any of the following effects can be obtained.

  (1) Since there is a gap between the inner wall portion of the case member and the capacitor, stress from the case member to the fixing member and the sealing curling portion can be avoided.

  (2) The sealing curling part can be protected from the stress from the case member, the deterioration of the sealing strength of the capacitor can be prevented, and the capacitor performance can be maintained.

(3) Since a fixing member is placed in the gap between the housing of the case member and the capacitor, the vibration of the capacitor can be suppressed, the load on the external terminals and auxiliary terminals due to vibration can be reduced, and the connectivity and fixing force can be reduced. Can be maintained.

It is a side view which shows the capacitor | condenser module which concerns on one embodiment. It is a figure which shows the plane and cross section of a fixing member. It is sectional drawing which shows the capacitor | condenser module provided with the fixing member. FIG. 4 is an enlarged sectional view showing an IVA part and an IVB part in FIG. 3. It is a perspective view which shows a main case of a capacitor | condenser module, a fixing member, and a part of capacitor | condenser. It is a fragmentary sectional view which shows engagement of a main case and a fixing member.

  FIG. 1 shows constituent members of a capacitor module according to an embodiment. The capacitor module 2 includes a plurality of capacitors 4. In this embodiment, six capacitors 4 are used, but the number may be 6 or less, or 6 or more. For each capacitor 4, for example, an electric double layer capacitor or an electrolytic capacitor is used.

  Each capacitor 4 includes an outer case 6 in which a capacitor element is accommodated. The outer case 6 is made of aluminum, for example. The outer case 6 is sealed with a sealing plate 8. The sealing plate 8 is formed of an insulating plate such as an insulating synthetic resin. The sealing plate 8 is formed with an anode terminal, a cathode terminal, and an auxiliary terminal as external terminals. When the sealing plate 8 is formed, the anode terminal, the cathode terminal, and the auxiliary terminal are integrally attached to the sealing plate 8 by insert molding. The anode of the capacitor element is connected to the anode terminal, and the cathode of the capacitor element is connected to the cathode terminal. The auxiliary terminal is used for fixing the capacitor 4 and a main case 12-1 to be described later. The sealing plate 8 is held by the sealing curling portion 10 of the outer case 6. The sealing curling part 10 seals the exterior case 6 by curving the opening edge of the exterior case 6 toward the sealing plate 8 and biting the end part into the sealing plate 8.

  As an example of a case member covering these capacitors 4, a main case 12-1 and a bottom case 12-2 are included. The main case 12-1 is an example of a first case part, and the bottom case 12-2 is an example of a second case part. The main case 12-1 and the bottom case 12-2 are, for example, molded articles of thermoplastic synthetic resin.

  In the main case 12-1 and the bottom case 12-2, for example, a storage portion 14 corresponding to the cylindrical capacitor 4 is formed. Each storage portion 14 has a cylindrical shape corresponding to the shape of the outer case 6 of the capacitor 4.

  The storage part 14 of the main case 12-1 has a ceiling part. A through-hole that allows the external terminal and the auxiliary terminal to pass through is formed in the ceiling portion. Each capacitor 4 is fixed to the main case 12-1 and covered with the storage portion 14 by screwing a fixing screw into the auxiliary terminal that is passed through the through hole. Moreover, also about an anode terminal and a cathode terminal, a terminal is penetrated from the through-hole provided in the ceiling part of the main case 12-1, and it electrically connects with a bus bar. In addition, it is good also as a structure which serves as fixation with the main case 12-1 without providing an auxiliary terminal and connecting with the bus bar of an external terminal.

  A fixing member 16 is inserted together with the capacitor 4 into the storage portion 14 of the main case 12-1. The fixing member 16 is installed between the inner wall portion of the storage portion 14 of the main case 12-1 and the outer case 6 of the capacitor 4. A plurality of locking protrusions 18 are formed in the storage portion 14 of the bottom case 12-2. Each locking projection 18 is an example of a locking portion. Each locking protrusion 18 protrudes from the inner wall surface of the storage part 14 of the bottom case 12-2 toward the main case 12-1.

  FIG. 2A shows the planar shape of the fixing member 16. FIG. 2B shows a IIB-IIB cross section of FIG.

  The fixing member 16 is formed of, for example, a thermoplastic synthetic resin and has flexibility. The fixing member 16 includes an annular portion 20, and the annular portion 20 includes a plurality of wedge portions 22. The annular portion 20 covers the periphery of the outer case 6 of the capacitor 4 and has an inner diameter that can be fitted to the periphery. The outer diameter of the fixing member 16 is designed to be larger than the inner diameter of the storage portion 14. As an example of the direction intersecting with the annular portion 20, the wedge portion 22 projects inward of the annular portion 20 in the orthogonal direction, and includes a tapered surface 24 that coincides with the outer wall surface of the annular portion 20. Each wedge portion 22 is formed at an angle interval of 60 degrees, for example, as an angle θ.

  A cutout portion 26 is formed in the annular portion 20. Engaging protrusions 28 are formed at the ends facing the notches 26. Each engagement protrusion 28 protrudes from the outer periphery of the annular portion 20.

  FIG. 3 shows a longitudinal section of the capacitor module 2. In the capacitor module 2, the capacitor 4 is covered with a main case 12-1 and a bottom case 12-2, and the main case 12-1 and the bottom case 12-2 are engaged to form a case member.

  The outer periphery of the capacitor 4 is covered with a fixing member 16 at a position that avoids the sealing curling portion 10, and is installed on the main case 12-1 side together with the capacitor 4. A tapered surface 30 is formed on the inner wall surface of the main case 12-1.

  The tapered surface 30 of the main case 12-1 is formed so that the inner diameter gradually increases toward the opening side of the main case 12-1, that is, the side of the main case 12-1 that is coupled to the bottom case 12-2. Yes. Due to the taper surface 30 and the taper surface 24 of the fixing member 16, as the fixing member 16 is inserted into the storage portion 14, the notch 26 is narrowed and gradually contracts toward the outer peripheral surface of the capacitor 4, thereby tightening the capacitor 4. . Then, the taper surface 24 of the fixing member 16 comes into contact with the taper surface 30, and the fixing member 16 is held on the inner wall surface of the main case 12-1 by friction between the two, and is disposed in the gap between the storage portion 14 and the capacitor 4. The The fixing member 16 is installed on the opening side of the main case 12-1, and is installed at a position that avoids the sealing curling unit 10 of the capacitor 4 in the storage unit 14 of the main case 12-1.

  The wedge portion 22 of the fixing member 16 is formed in the annular portion 20 in a discontinuous state at regular intervals. Further, in the fixing member 16, a part of the inner peripheral surface of the annular portion 20 forms a protruding portion, and the protruding portion and the inner peripheral surface of the wedge portion 22 are connected to form the same inner peripheral surface. .

  As the fixing member 16 is inserted into the storage portion 14, the fixing member 16 changes so as to contract with respect to the capacitor 4. In this case, the fixing member 16 does not press the entire outer peripheral surface of the capacitor 4 evenly, but can firmly fix the outer peripheral surface of the outer case 6 of the capacitor 4 with the wedge portion 22. Further, even when the capacitor module 2 vibrates, since it is strongly pressed, the movement of the storage portion 14 toward the opening side is suppressed, and the fixation is maintained.

  Further, depending on the tightening degree at the time of insertion, such as the shape and size of the wedge portion 22, the outer case 6 can be deformed to the capacitor element side so that the wedge portion 22 bites into the capacitor 4. It is fixed and can be fixed more firmly. Compared with the case where it is pressed all around, the outer peripheral surface of the capacitor 4 is more easily deformed when pressed partially as in the embodiment, and the wedge portion 22 is fixed so as to bite into the outer peripheral surface of the capacitor 4. Can be effectively fixed to the capacitor module 2. This is because when the cylindrical capacitor 4 is pressed from the side, the outer case 6 is more likely to be deformed to the capacitor element side when it is pressed partially than when it is pressed uniformly.

  A gap 32 is formed between the inner wall surface of the storage portion 14 of the main case 12-1 and the outer peripheral surface of the capacitor 4. The sealing curling portion 10 of the capacitor 4 is disposed in the gap 32, and the main case 12-1 is prevented from sticking to the sealing curling portion 10. On the other hand, the installation of the fixing member 16 fills the gap between the inner wall surface of the main case 12-1 and the outer peripheral surface of the capacitor 4. Even when the capacitor module 2 vibrates due to the influence of the usage environment, the fixing member 16 can prevent the capacitor 4 from vibrating in the storage portion 14. By preventing the capacitor 4 from vibrating, the load applied to the external terminal and the auxiliary terminal can be reduced. Further, the fixing force of the capacitor 4 to the main case 12-1 is improved.

  The bottom case 12-2 is provided with a cylindrical storage portion. When the bottom case 12-2 is fitted to the bottom side of the capacitor 4 and coupled to the main case 12-1, each capacitor 4 is accommodated on the bottom case 12-2 side. The capacitor 4 is inserted into the storage portion 14 of the bottom case 12-2, and the capacitor 4 is in close contact with the bottom case 12-2. By fitting the bottom case 12-2 and the capacitor 4, even when vibration is applied to the capacitor module 2, the load due to the vibration of the capacitor 4 can be reduced, and the load on the external terminals and auxiliary terminals of the capacitor 4 can be reduced. it can.

  FIG. 4A shows an enlarged view of the VIA portion of FIG. The sealing curling portion 10 is a portion in which the opening edge portion 34 of the outer case 6 is curled to the sealing member 36 of the sealing plate 8 with respect to the sealing plate 8 that seals the outer case 6 of the capacitor 4. By installing the sealing curling portion 10 in the gap 32 between the exterior case 6 and the main case 12-1, stress from the main case 12-1 side on the sealing curling portion 10 can be avoided. That is, since the sealing curling unit 10 is installed in the gap 32, contact between the sealing curling unit 10 and the inner wall of the main case 12-1 can be avoided, and stress on the sealing curling unit 10 from the main case 12-1 can be avoided. . In addition, by arrange | positioning the fixing member 16 between the main case 12-1 and the capacitor | condenser 4, the clearance gap 32 can be ensured reliably and the contact with the sealing curling part 10 and the inner wall of the main case 12-1 can be avoided more. .

  FIG. 4B shows an enlarged view of the VIB portion of FIG. An annular portion 20 and a wedge portion 22 of the fixing member 16 are disposed on the main case 12-1 side. The small-diameter portion 40 of the bottom case 12-2 is fitted into the large-diameter portion 38 of the main case 12-1. A locking projection 18 protruding from the opening side of the bottom case 12-2 is fitted into the main case 12-1. When excessive vibration shock is applied to the capacitor module 2, even if the fixing member 16 receives a force that moves toward the opening side of the main case 12-1, the locking projection 18 prevents the movement, and the fixing member 16. Is not moved to the bottom case 12-2. Even if the fixing member 16 moves, it does not come off from the capacitor 4, so that the main case 12-1 and the capacitor 4 can be fixed.

  FIG. 5 shows the main case 12-1, the fixing member 16, and a part of the capacitor 4 of the capacitor module 2 from the opening side of the main case 12-1.

  A notch portion 42 is formed in the wall portion of the storage portion 14 adjacent to the main case 12-1. The notch portion 42 is an example of a window portion that is inserted between the storage portions 14. An engagement protrusion 28 of the fixing member 16 installed in the main case 12-1 is inserted into and engaged with the notch 42.

  FIG. 6 shows the engagement between the engaging protrusion 28 of the annular portion 20 of the fixing member 16 inserted on the main case 12-1 side and the notch portion 42 on the main case 12-1 side. The fixing member 16 can move in the direction of the center axis of the capacitor 4 within the range of the notch portion 42 by the engagement of the engagement protrusion 28 and the notch portion 42. Further, the engagement of the engaging protrusion 28 and the notch 42 prevents movement of the fixing member 16 in the circumferential direction.

<Effect of one embodiment>

  (1) Since the gap 32 is provided between the main case 12-1 and the capacitor 4, the sealing of the capacitor 4 which is a crimped portion of the outer case 6 when the capacitor 4 is inserted into the main case 12-1 or when being fixed. The curling unit 10 can avoid pressing by the inner wall of the main case 12-1, and a load on the sealing curling unit 10 can be avoided. For this reason, the airtightness of the outer case 6 of the capacitor 4 is not impaired.

  (2) Since the fixing member 16 is inserted into the gap 32 between the main case 12-1 and the capacitor 4, vibration applied to the capacitor 4 from the main case 12-1 side can be suppressed. That is, although the external terminal of the capacitor 4 is fixed to the main case 12-1, vibration on the bottom side of the capacitor 4 with the fixed portion of the external terminal as a fulcrum can be suppressed. Further, the load on the connection portion on the external terminal side of the capacitor 4 can be reduced. Thereby, the connectivity of the external terminals can be maintained.

  (3) Since the fixing member 16 is disposed in the gap 32 between the storage portion 14 and the capacitor 4 of the main case 12-1, the gap between the storage portion 14 and the capacitor 4 can be provided with certainty, and the sealing A load on the curling unit 10 can be further avoided.

  (4) The fixing member 16 engages the engagement protrusion 28 with the notch 42 of the main case 12-1, the engagement position is specified, and the fixing member 16 is fixed to the main case 12-1. Thereby, rotation of the fixing member 16 is prevented.

  (5) When the fixing member 16 is inserted into the main case 12-1, the engagement between the engaging protrusion 28 on the fixing member 16 side and the notch portion 42 of the storage portion 14 is the fixing member 16 to the main case 12-1. Functions as an insertion guide. Thereby, the insertion accuracy and the insertion direction of the fixing member 16 are specified, and the inconvenience that the fixing member 16 is inserted into the storage portion 14 of the main case 12-1 at an inclination can be prevented.

  (6) Since the engaging member 28 is engaged with the notch 42 of the main case 12-1, the fixing member 16 is detached even if the fixing member 16 receives vibration from the main case 12-1. Can be prevented.

  (7) The bottom case 12-2 is formed with a locking projection 18 to be inserted into the main case 12-1, and this locking projection 18 is formed in the gap 32 between the main case 12-1 and the capacitor 4. Inserted. The locking projection 18 controls the movement of the fixing member 16 to the opening side of the main case 12-1 that occurs when an excessive vibration shock is applied to the capacitor module 2. Can be fixed.

  (8) The inner wall of the storage portion 14 of the main case 12-1 is provided with a tapered surface 30 and the wedge portion 22 of the fixing member 16 is provided with a tapered surface 24. The fixing member 16 can be fixed to the main case 12-1. In this case, the wedge portion 22 can be fixed to the inside of the main case 12-1.

  (9) The locking protrusion 18 on the bottom case 12-2 side functions as a stopper with respect to the fixing member 16, and the fixing member 16 is fixed to the positioning position in the main case 12-1 by the locking protrusion 18. Therefore, it is possible to prevent the fixing member 16 from being detached even if vibration or impact is applied.

  (10) The holding function of the capacitor 4 in the main case 12-1 is stabilized by the stopper function of the locking projection 18, and the vibration suppressing effect of the main case 12-1 on the capacitor 4 can be maintained.

  (11) The fixing member 16 is formed separately from the main case 12, inserted individually for each storage unit 14, and disposed in each storage unit 14. Therefore, even if the size of the capacitor 4 varies and the gap between the capacitor 4 and the inner wall surface of the storage portion 14 is different for each storage portion 14, the fixing member 16 is vibrated with respect to each storage portion 14. It can be inserted and placed up to the restraining position. In other words, if the capacitor 4 is relatively small and the gap formed between the capacitor 4 and the inner wall surface of the storage portion 14 is large, the fixing member 16 can be inserted above the storage portion 14 and the vibration of the capacitor 4 is suppressed. Is done. If the capacitor 4 is relatively large and the gap between the capacitor 4 and the inner wall surface of the storage portion 14 is small, the fixing member 16 is disposed on the open side of the storage portion 14. Can be suppressed. Since the fixing member 16 is inserted and arranged for each storage portion 14 in this way, even if the size of the capacitor 4 changes, the fixing member 16 can be individually arranged at an appropriate position corresponding to the size, Vibration suppression can be achieved regardless of the size of the capacitor 4.

[Other Embodiments]

  In the above embodiment, the fixing member 16 is formed by connecting the protruding portion formed on the inner peripheral surface of the annular portion 20 and the inner peripheral surface of the wedge portion 22 to form the same inner peripheral surface. . The inner peripheral surface of the wedge portion 22 may not protrude from the inner peripheral surface of the annular portion 20, and the inner peripheral surface of the annular portion 20 and the inner peripheral surface of the wedge portion 22 may have the same inner peripheral surface. When inserted into the storage portion 14, the wedge portion 22 is pressed against the outer case 6 of the capacitor 4 by the tapered surface 30 of the storage portion 14, and can be partially pressed and firmly fixed.

  The shape of the notch 42 may be gradually narrowed toward the external terminal side of the capacitor 4. By doing so, when the fixing member 16 is inserted, the engaging protrusion 28 contracts inward, the annular portion 20 is tightened to the capacitor 4 side, and the force that the wedge portion 22 is tightened against the capacitor 4 is increased. Fixing force improves more.

  In the embodiment described above, the notch 26 is formed in the annular portion 20 of the fixing member 16, but the annular portion 20 may be endless without forming the notch 26.

  In the above-described embodiment, the locking projection 18 and the fixing member 16 are arranged without contact, but the locking projection 18 and the fixing member 16 may be arranged in contact with each other. By doing in this way, the fixing member 16 in the main case 12-1 can be positioned. For example, as shown in FIG. 4B, a locking projection 18 that protrudes from the bottom case 12-2 toward the main case 12-1 is formed, and this locking projection 18 is brought into contact with the fixing member 16. Arrange. With such a configuration, even if the capacitor module 2 vibrates, the fixing member 16 can be prevented from moving toward the opening side of the main case 12-1, and the main case 12-1 and the capacitor 4 are maintained in a fixed state. . Note that a portion protruding from the bottom case 12-2 may be formed on the bottom case 12-2 side.

  In the above embodiment, the capacitor 4 and the main case 12-1 are fixed by the auxiliary terminal or the external terminal, and then the fixing member 16 is inserted into the storage portion 14. However, the auxiliary terminal or the external terminal and the main case 12-1 are fixed. The fixing member 16 may be inserted before the operation. In this way, the external terminal and the auxiliary terminal are connected after securing the main case 12-1 and the capacitor 4, so that the load on the auxiliary terminal and the external terminal during the manufacturing process of the capacitor module 2 is reduced. Can be reduced.

As described above, the most preferable embodiment of the present invention has been described. The present invention is not limited to the above description. Various modifications and changes can be made by those skilled in the art based on the gist of the invention described in the claims or disclosed in the embodiments for carrying out the invention. It goes without saying that such modifications and changes are included in the scope of the present invention.

The present invention is a capacitor module including a case member that covers a plurality of capacitors, and by forming a gap between the capacitor and the inner wall portion of the case member by a fixing member while avoiding the sealing curling portion, This is useful because stress can be avoided and degradation of the capacitor performance can be prevented.

2 Capacitor Module 4 Capacitor 6 Exterior Case 8 Sealing Plate 10 Sealing Curling Part 12-1 Main Case 12-2 Bottom Case 14 Storage Part 16 Fixing Member 18 Locking Projection 20 Annular Part 22 Wedge Part 24 Tapered Surface 26 Notch 28 Engagement projection 30 Tapered surface 32 Gap 34 Open edge 36 Sealing member 38 Large diameter portion 40 Small diameter portion 42 Notch

Claims (6)

A capacitor module including a case member having a storage portion for storing a plurality of capacitors,
Forming a notch in the case member;
There is a gap between the inner wall portion of the storage portion and the capacitor,
A fixing member is disposed in the gap,
An annular portion in which the fixing member surrounds the peripheral portion of the capacitor, a wedge portion formed from the annular portion in a direction intersecting the annular portion, and an engagement formed on the annular portion and engaging with the notch portion. and a coupling portion, the capacitor module, characterized in that engaging the fixed member to the case member by the engaging portion. A capacitor module including a case member having a storage portion for storing a plurality of capacitors,
The case member is separated into a first case portion that covers the terminal side of the capacitor, and a second case portion that is connected to the first case portion and covers the bottom side of the capacitor,
There is a gap between the inner wall portion of the storage portion and the capacitor,
A fixing member is disposed on the first case portion side of the gap,
The capacitor module comprising: an annular portion that surrounds the periphery of the capacitor; and a wedge portion that is formed from the annular portion in a direction crossing the annular portion. The fixing member has a protruding portion formed on a part of the inner peripheral surface of the annular portion, and the inner peripheral surface of the wedge portion and the inner peripheral surface of the protruding portion are connected, and the same inner peripheral surface is formed. The capacitor module according to claim 1 , wherein the capacitor module is formed. Said second case portion, the capacitor module according to claim 2, further comprising a locking portion which is inserted between said capacitor and said first case portion. A method of manufacturing a capacitor module comprising a case member having a storage portion for storing a plurality of capacitors,
A notch is formed in the case member, and a fixing member having an engaging portion that engages with the notch is attached to the outer case of the capacitor,
Attaching the capacitor to the case member together with the fixing member,
A method for manufacturing a capacitor module , comprising: disposing the fixing member between an inner wall of the case member and the capacitor; and engaging the engaging portion with the notch portion . A method of manufacturing a capacitor module comprising a case member having a storage portion for storing a plurality of capacitors,
The case member is separated into a first case portion that covers the terminal side of the capacitor, and a second case portion that is connected to the first case portion and covers the bottom side of the capacitor,
A fixing member is attached to the outer case of the capacitor,
Attaching the capacitor to the case member together with the fixing member,
A method of manufacturing a capacitor module, wherein the fixing member is disposed on the first case portion side between an inner wall of the case member and the capacitor.

Images