JP2015197993A - Lead storage battery, and removable member provided in the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a degree of freedom in an assembly direction of an external terminal, and to prevent a plate terminal from being deformed.SOLUTION: A lead storage battery includes: an electrode plate group 20; a casing K accommodating the electrode plate group 20; a tabular plate terminal 80 attached to the casing K and electrically connected with the electrode plate group 20, the plate terminal 80 including plate terminals 80P and 80N with connection parts 85 to which an external terminal 90 can be connected by screwing from a first direction; and removable members 100P and 100N which are attachable to and detachable from the connection parts 85 of the plate terminals 80P and 80N and include connecting parts 120 to which the external terminal 90 can be connected by screwing in a second direction across the first direction while being connected to the plate terminals 80P and 80N. The removable members 100 include deformation regulation parts 130 capable of regulating deformation of the plate terminals 80P and 80N with respect to the casing K when connecting the external terminal 90 to the connection part 120 by screwing or when canceling the connection by screwing in the state where the removable members 100 are mounted to the plate terminals 80P and 80N.

Description

  The present invention relates to a structure of a terminal portion using a plate terminal.

  As a terminal structure of a lead storage battery, for example, as described in Patent Document 1 below, a terminal in which a plate terminal obtained by bending a metal plate material is arranged at a corner of a lid member that seals a battery case is known. Since the plate terminal has bolt insertion holes on the two surfaces of the front wall and the ceiling wall, the external terminals connected to the electrical components can be assembled by screwing from the front and top surfaces in two directions. It has become.

Japanese Patent No. 3399733

However, for example, in a lead-acid battery for a motorcycle, the external terminal of the electrical component cannot be connected to a predetermined bolt insertion hole depending on the positional relationship with the body, and the external terminal may not be assembled. In the lead storage battery described in Patent Document 1, there is a case where there is no gap on the front surface or the upper surface, and in this case, it is required to be able to be assembled from the side surface. In view of this, it is conceivable that the external terminal can be assembled from the side surface, and a detachable member connected to the bolt insertion hole of the front wall or the ceiling wall is provided. However, when the external terminal is assembled from the side by screw tightening, there is a problem that the plate terminal is easily deformed because a force is applied to the plate terminal in a direction perpendicular to the surface (here, the front-rear direction).
The present invention has been completed based on the above circumstances, and in the structure of a terminal portion using a plate terminal, it increases the degree of freedom in the assembly direction of the external terminal and suppresses deformation of the plate terminal. With the goal.

  The lead acid battery disclosed by the present specification is a power generation element, a casing that houses the power generation element, a plate-like plate terminal that is attached to the casing and is electrically connected to the power generation element, and an external terminal A plate terminal having a first connection portion connectable by screw tightening from the first direction, and detachable with respect to the first connection portion of the plate terminal, and connected to the plate terminal in the external A detachable member having a second connecting portion connectable by screwing from a second direction intersecting the first direction, wherein the detachable member is attached to the plate terminal in the second When the external terminal is connected to the connecting portion by screw tightening or when the connection by screw tightening is released, a deformation restricting portion capable of restricting deformation of the plate terminal with respect to the casing is provided. Incidentally, the “plate-shaped plate terminal” means a terminal having a shape that, when expanded, becomes a single plate.

  A detachable member disclosed in the present specification includes a plate terminal having a first connection portion to which an external terminal can be connected by screwing in a first direction, and a casing to which the plate terminal is attached. The attachment part attachable to the first connection part and the external terminal can be connected by screw tightening from the second direction intersecting the first direction in a state of being attached to the plate terminal. When the external terminal is connected to the second connection portion by screw tightening in the state of being attached to the second connection portion and the plate terminal, or when the connection by screw tightening is released, A deformation restricting portion capable of restricting deformation of the plate terminal.

  According to the present invention, it is possible to increase the degree of freedom in the assembling direction of the external terminals and suppress the deformation of the plate terminals.

The perspective view of the lead storage battery which concerns on one Embodiment of this invention. Exploded perspective view of lead acid battery Top view of the lid member with a part of the upper lid cut out Perspective view of positive side terminal The perspective view which expanded a part of lid member (The state which notched a part of upper cover was shown) The perspective view which expanded a part of lid member (The state which attached the positive electrode side plate terminal with respect to FIG. 5 is shown). The perspective view which expanded a part of lid member Perspective view of positive electrode side detachable member Top view of the positive side detachable member Side view of positive-side detachable member The perspective view which expanded a part of lid member (the state which attached the positive electrode side attaching / detaching member is shown) Top view of lead acid battery AA line sectional view in FIG. AA line sectional view in Drawing 12 (a comparative example is shown).

  First, an outline of the lead storage battery of the present embodiment will be described. The lead storage battery includes a power generation element, a casing that houses the power generation element, a plate-like plate terminal that is attached to the casing and is electrically connected to the power generation element, and the external terminal is connected from the first direction. The plate terminal having a first connection portion connectable by screw tightening and the first connection portion of the plate terminal is detachable and connected to the plate terminal, and the external terminal is connected to the first terminal. A detachable member having a second connection portion connectable by screw tightening from a second direction intersecting with one direction, and the detachable member is attached to the plate terminal with respect to the second connection portion. When the external terminal is connected by screw tightening or when the connection by screw tightening is released, a deformation restricting portion capable of restricting deformation of the plate terminal with respect to the casing is provided.

  In this configuration, by using the detachable member, it is possible to assemble the external terminal from the second direction that intersects the first direction in addition to the first direction. As a result, the degree of freedom in the direction in which the external terminals are assembled increases. Moreover, when an external terminal is assembled | attached to or removed from the attachment / detachment member with which the board terminal was mounted | worn, it can suppress that a board terminal deform | transforms by a deformation | transformation control part.

  In the lead storage battery, the casing includes a support portion that can support the deformation restricting portion in a state where the detachable member is connected to the plate terminal. In this configuration, the support part of the casing supports the deformation restricting part. Therefore, it becomes possible to receive the force of the rotation direction by the screw tightening from the second direction by the casing, and it is possible to prevent the plate terminal from being deformed by preventing the plate terminal from rotating with respect to the casing. Note that “supportable” means that the deformation restricting portion can be supported at the time of screw tightening, and at other times, an unsupported configuration is also included. Further, “support” includes a form in which the deformation restriction part is supported via a member (for example, a connecting part of the plate terminal) fixed to the support part in addition to a form in which the deformation restriction part is directly supported.

  The lead storage battery further includes a pole column connected to the power generation element, and the plate terminal is fixed to the pole column joint portion joined to the pole column and the support portion of the casing, and the pole column junction And a connecting portion that connects the first connecting portion and the connecting portion is in contact with the deformation restricting portion.

  In this configuration, since the detachable member is in contact with the position close to the pole column connecting portion, an increase in electrical resistance due to the detachable member being interposed between the external terminal and the plate terminal can be suppressed.

  In this lead acid battery, the connection part has a pair of opposing walls opposed to each other with a gap therebetween, and the deformation restricting part of the detachable member is fitted between the pair of opposing walls.

  In this configuration, since the deformation restricting portion is fitted between the pair of opposing walls, the deformation restricting portion is connected to the pair of external terminals in both cases where the external terminal is connected by screw tightening or when the connection by screw tightening is released. Since it can be supported by either of the opposing walls, the plate terminal can be prevented from being deformed.

  In the lead storage battery, the detachable member has two extending portions that are bent from both sides of the plate-like second connecting portion and extend in parallel with the second direction, and one of the extending portions is extended. The existing part is the deformation restricting part fitted between the pair of opposing walls, and the other extending part is an attaching part attached to the first connection part of the plate terminal. In this configuration, the detachable member can be formed only by bending a single plate, and the workability is good.

  In the lead storage battery, the casing has a rectangular parallelepiped shape having a first side surface and a second side surface orthogonal to the first side surface, and the first connection portion of the plate terminal is the corner portion of the casing, The second connection portion of the detachable terminal that is disposed along the first side surface of the casing and is mounted on the plate terminal is disposed along the second side surface of the casing. In this configuration, even if there is no space for assembling the external terminal on the first side surface side of the casing, the external terminal can be assembled from the second side surface side.

<Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS.
1. Structure of the lead storage battery 1 The lead storage battery 1 shown in FIG. 1 is used as a battery for a motorcycle, and starts the motorcycle or supplies electric power to equipment such as an electrical component mounted on the motorcycle. As shown in FIGS. 1 and 2, the lead storage battery 1 includes a casing K, an electrode plate group 20 (corresponding to a power generation element), a positive electrode side pole column 25P, a negative electrode side electrode column 25N, and a positive electrode side plate terminal 80P (corresponding to a plate terminal). ), A negative electrode side plate terminal 80N (corresponding to a plate terminal), a positive electrode side detachable member 100P, and a negative electrode side detachable member 100N. In the following description, the lateral width direction of the casing K (the arrangement direction of the plate terminals 80P and 80N) is the X direction, the height direction is the Y direction, and the depth direction of the casing K is the Z direction. The description will be made with the installation surface side of the positive electrode side plate terminal 80P and the negative electrode side plate terminal 80N as the front side.

  The casing K includes the battery case 11 and the lid member 30 and has a rectangular parallelepiped shape. The battery case 11 is made of a synthetic resin, and has a box shape having four outer walls 13 including a front wall 13A, a rear wall 13B, a left side wall 13C, and a right side wall 13D, and a bottom wall 15 and having an open upper surface. The battery case 11 accommodates an electrode plate group 20 together with an electrolytic solution made of dilute sulfuric acid.

  As shown in FIG. 2, the electrode plate group 20 includes a positive electrode plate 21P, a negative electrode plate 21N, and a separator 22 that partitions the electrode plates 21P and 21N. The positive electrode plate 21P and the negative electrode plate 21N are configured by filling a lattice body with an active material, and a positive electrode lead and a negative electrode lead are led out from above. A plurality of positive plates 21P are provided, and each positive plate 21P is connected to a positive strap 23P via a positive lead. Similarly, a plurality of negative plates 21N are provided, and each negative plate 21N is connected to a negative strap 23N through a negative lead.

  The positive pole column 25P is made of a metal such as a lead alloy and has a substantially cylindrical shape. The lower end portion of the positive pole column 25P is welded to the positive strap 23P. Similarly, the negative electrode side pole column 25N is also made of a metal such as a lead alloy and has a substantially cylindrical shape. The lower end of the negative electrode side pole column 25N is welded to the negative electrode strap 23N.

  The lid member 30 includes an inner lid 40 and an upper lid 70. The inner lid 40 is made of a synthetic resin and has a size capable of sealing the upper surface of the battery case 11. The inner lid 40 is attached so as to overlap the battery case 11 and is fixed to the battery case 11 by heat welding or the like.

  Further, the inner lid 40 is formed with a base portion 41 having a shape elongated in the X direction. An upper lid 70 is attached to the upper surface of the base portion 41 by heat welding or the like. The upper lid 70 is made of a synthetic resin, and has a flat plate shape with a size capable of sealing the upper surface of the base portion 41.

  As shown in FIGS. 3 and 5, low surface portions 45 </ b> P and 45 </ b> N are formed at both corners in the X direction of the inner lid 40, and a step is provided between the base lid portion 41. Further, the front surface of the inner lid 40 is formed with high surface portions 43P and 43N having a height that is flush with the upper lid 70 so as to be adjacent to the low surface portions 45P and 45N. The surroundings are surrounded by walls.

  Then, a positive terminal mounting portion 47P is formed so as to straddle the left lower surface portion 45P and the base portion 41 shown in FIG. 3, and so as to straddle the right lower surface portion 45N and the base portion 41 shown in FIG. A negative terminal mounting portion 47N is formed. A positive electrode side plate terminal 80P and a negative electrode side plate terminal 80N are attached to the terminal attachment portions 47P and 47N, respectively.

  The shape and mounting structure of the plate terminal (a general term for the positive electrode side plate terminal 80P and the negative electrode side plate terminal 80N) 80 are common to the positive electrode and the negative electrode. Hereinafter, the shape and mounting structure of the plate terminal 80 will be described taking the positive electrode side as an example.

  The positive electrode side plate terminal 80P is made of a metal plate material, and, as shown in FIG. 4, includes a pole column joining portion 81, a connecting portion 83, and a connecting portion (an example of the “first connecting portion” in the present invention) 85. Have. The pole column joint 81 is plate-shaped, and a pole column insertion hole 81A is formed at the center. The connecting portion 85 is L-shaped and has an upper surface wall 86 and a front wall 87 bent downward from the front end of the upper surface wall 86. Bolt insertion holes 86A and 87A are formed in the top wall 86 and the front wall 87, respectively. A locking piece 88 is formed at the lower end of the front wall 87. The locking piece 88 is bent inward and is formed over the entire length of the front wall 87.

  The connecting portion 83 connects the pole column joint portion 81 and the connection portion 85, and is connected to the first vertical wall 83 </ b> A connected to the front end portion of the pole column joint portion 81 and the rear end portion of the connection portion 85. A second vertical wall 83B, and a bottom wall 83C connecting the lower ends of both the vertical walls 83A and 83B. As shown in FIG. 4, the connection part 83 is U-shaped. The two vertical walls 83A and 83B constituting the connecting portion 83 face each other in parallel with a space therebetween, and a groove portion 84 is formed therebetween. The merit of making the connecting portion 83 “U-shaped” is that the rigidity is higher than that of the connecting portion 83 having a plate shape, and the positive electrode side plate terminal 80P is difficult to be deformed. The first vertical wall 83A and the second vertical wall 83B are examples of the “opposing wall” in the present invention.

  The positive terminal mounting portion 47P includes a first mounting portion 51 and a second mounting portion 61 as shown in FIGS. The first attachment portion 51 is formed on the base portion 41 of the inner lid 40. The first mounting portion 51 is one step lower than the general surface of the base portion 41, and accommodates the pole column joint portion 81 of the positive plate terminal 80P inside. A through hole 53 is formed in the first mounting portion 51, and as shown in FIG. 5, the positive pole column 25 </ b> P penetrates the through hole 53 and protrudes to the first mounting portion 51. . As shown in FIG. 6, the tip of the positive pole column 25P penetrates the pole column joint 81 of the positive plate terminal 80P. By welding the tip, the positive pole 25P and the pole junction 81 are joined. Are joined (fixed).

  The second attachment portion 61 is formed on the lower surface portion 45P of the inner lid 40, and the connection portion 83 and the connection portion 85 of the positive electrode side plate terminal 80P are attached thereto. Specifically, as shown in FIG. 5, the second mounting portion 61 includes a plate-like bottom plate 62 formed on the lower surface portion 45 </ b> P, a protruding portion 63, a locking groove 67, and a guide wall 68. Have. The protrusion 63 protrudes above the bottom plate 62 and forms an accommodation recess 64 between the vertical wall 52 of the base 41. The housing recess 64 has a structure in which the connecting portion 83 of the positive plate terminal 80P is fitted and fixed. The housing recess 64 is an example of the “support portion” in the present invention.

  The locking groove 67 is formed in the lower front part of the bottom plate 62. A locking piece 88 formed on the front wall 87 of the positive plate terminal 80P is locked in the locking groove 67. By locking the locking piece 88 in the locking groove 67, the connecting portion 85 of the positive side plate terminal 80 </ b> P can be fixed to the second mounting portion 61. The front wall 87 of the positive plate terminal 80P is parallel to the front wall 13A of the battery case 11 and is disposed along the surface of the front wall 13A. The front wall 13A of the battery case 11 corresponds to the “first side surface” of the present invention.

  The guide walls 68 are formed on both sides of the protrusion 63 in the X direction. The guide wall 68 regulates the displacement of the positive side plate terminal 80P by guiding the connecting portion 83 and the connecting portion 85 from both sides in the X direction. A slit 69 is formed at the rear portion of the guide wall 68. The formation position of the slit 69 corresponds to the groove portion 84 of the positive electrode side plate terminal 80P. The slit 69 is a relief for avoiding interference with the deformation regulating wall 130 fitted in the groove portion 84.

  Since the positive electrode side plate terminal 80P has bolt insertion holes 86A and 87A formed in the upper surface wall 86 and the front wall 87 of the connecting portion 85, as shown by a one-dot chain line in FIG. 90 can be assembled from two directions (Z direction and Y direction) on the front side and the upper side. Further, the negative electrode side plate terminal 80N is also attached to the negative electrode side terminal attachment portion 47N formed at the corner in the X direction of the inner lid 40 by the same structure, and the external terminal 90 on the electrical component side is connected to the battery case 11. It can be assembled from two directions, the front side and the top side. The Z direction is an example of the “first direction” in the present invention.

  The positive electrode side attaching / detaching member 100P is made of a metal such as brass, for example, and as shown in FIGS. 8 to 9, the attaching portion 110 and the connecting portion 120 (an example of the “second connecting portion” of the present invention) , A deformation restriction wall (an example of the “deformation restriction portion” of the present invention) 130.

  The positive electrode side attaching / detaching member 100P is U-shaped as shown in FIGS. 8 and 9, and is bent from both sides of the plate-like connecting portion 120, and extends in parallel with the X direction. It has an extension. The two extending portions are plate-shaped. One of the two extending portions is the deformation regulating wall 130, and the other extending portion is the attachment portion 110. As shown in FIG. 10, the positive electrode side attaching / detaching member 100P has a symmetrical shape in the Y direction.

  The attachment portion 110 is for attachment to the positive electrode side plate terminal 80P, and is formed with a bolt insertion hole 110A. The connection unit 120 is for connecting the external terminal 90. A bolt insertion hole 120 </ b> A is formed in the connection part 120, and a nut 125 is fixed to the back surface. Further, the deformation regulating wall 130 corresponds to the groove portion 84 of the positive electrode side plate terminal 80 </ b> P, and can be fitted into the groove portion 84. As shown in FIG. 10, the width L <b> 2 of the deformation restriction wall 130 is shorter than the width dimension L <b> 1 of the mounting portion 110.

  As shown in FIGS. 11 and 12, the positive electrode side attaching / detaching member 100 </ b> P is configured by overlapping the mounting portion 110 on the front wall 87 of the positive electrode side plate terminal 80 </ b> P and bolting it while fitting the deformation regulating wall 130 into the groove portion 84. The positive electrode side plate terminal 80P is attached. In the mounted state, the connecting part 120 of the positive electrode side attaching / detaching member 100P is parallel to the left side wall 13C of the battery case 11 as shown in FIGS. 1, 11, and 12, and is disposed along the surface of the left side wall 13C. The The left side wall 13C of the battery case 11 corresponds to the “second side surface” of the present invention.

  Therefore, by attaching the positive electrode side attaching / detaching member 100P, it is possible to assemble the external terminal 90 from the left side direction (X direction) of the battery case 11, and the degree of freedom in the assembling direction of the external terminal 90 is increased. The X direction is an example of the “second direction” in the present invention.

  Moreover, since the locking piece 88 of the positive electrode side plate terminal 80P is locked from the Z direction with respect to the locking groove 67 of the positive terminal mounting portion 47P, the locking piece 88 comes off when a force is applied in the Z direction. There is a problem that it is easy.

  As shown in FIG. 7, when the external terminal 90 is bolted to the front wall 87 of the positive electrode side plate terminal 80P or when the bolt B is loosened to remove the external terminal 90, a force is exerted in the rotational direction R1 with respect to the positive electrode side plate terminal 80P. In addition, since the direction of the force is orthogonal to the Z direction, there is little possibility that the locking piece 88 will come off from the locking groove 67.

  On the other hand, when the external terminal 90 is bolted to the connecting portion 120 of the positive electrode side attaching / detaching member 100P or when the bolt B is loosened to remove the external terminal 90, as shown in FIG. As a result, a force is applied in the rotation direction R2 and a force is also applied in the Z direction. Therefore, the locking piece 88 is easily detached from the locking groove 67, and the connecting portion 85 of the positive side plate terminal 80P is large as shown in FIG. There is a risk of deformation.

  In this respect, as shown in FIG. 13, the lead storage battery 1 is configured such that the deformation regulating wall 130 formed on the positive electrode side attaching / detaching member 100 </ b> P is fitted into the groove portion 84 of the connecting portion 83 fixed to the housing recess 64 of the inner lid 40. The housing recess 64 and the connecting portion 83 fixed to the housing recess 64 support (receive) the deformation regulating wall 130. Specifically, the bottom wall 83 </ b> C of the connecting portion 83 receives the lower surface of the deformation restriction wall 130. A pair of opposing walls 83 </ b> B and 83 </ b> A receives the front and rear of the deformation regulating wall 130.

  Therefore, the force in the rotation direction R <b> 2 applied to the positive electrode side attaching / detaching member 100 </ b> P as the bolt B is attached / detached can be supported by the connecting portion 83 fixed to the inner lid 40 via the deformation regulating wall 130. Therefore, it is possible to restrict the disengagement of the locking piece 88, and the deformation of the connecting portion 85 of the positive side plate terminal 80P can be suppressed.

  It should be noted that the relationship between the deformation regulating wall 130 and the connecting portion 83 is that when the bolt B is attached / detached, the deformation regulating wall 130 comes into contact with the walls 83A to 83C of the connecting portion 83 to transmit the load to the inner lid 40. What is necessary is just to always give a clearance gap between the deformation | transformation control wall 130 and each wall 83A-83C. Since the assembly can be performed smoothly if a gap is provided, in this embodiment, a small clearance necessary for the assembly is provided between the opposing walls 83A and 83B, and the bottom wall 83C is abutted. .

  Further, as shown in FIG. 14, the connection portion 85 is deformed starting from the vertical wall 83B of the connecting portion 83 falling in the groove portion 84, but the deformation regulating wall 130 fitted to the groove portion 84 is formed on the vertical wall 83B. In order to suppress the collapse, the deformation of the connecting portion 85 can be effectively suppressed. In addition, as shown in FIG. 13, the mounting portion 110 is positioned so as to overlap the outer side of the locking piece 88, and the mounting portion 110 restricts deformation of the locking piece 88. Therefore, the locking piece 88 is more difficult to come off, and the effect of suppressing deformation of the connecting portion 85 is very high.

  Further, as shown in FIG. 13, since the lower ends of the attachment portion 110 and the deformation regulating wall 130 are in contact with the low surface portion 45P and the bottom wall 83C, the positive electrode side detachable member 100P is attached to the positive electrode side plate terminal 80P. It can be fixed without looseness, and it can also be used to prevent noise during driving.

  Similarly to the positive electrode side, the negative electrode side plate terminal 80N is also attached to the front wall 87 of the negative electrode side plate terminal 80N by bolting the mounting portion 110 on the negative electrode side while fitting the deformation regulating wall 130 into the groove portion 84. On the other hand, the negative electrode side detachable member 100N can be detachably mounted. As shown in FIG. 1, the connecting portion 120 of the negative electrode side attaching / detaching member 100N is parallel to the right side wall 13D of the battery case 11, and is disposed along the surface of the right side wall 13D. Therefore, the external terminal 90 can be assembled from the right side surface direction (X direction) of the battery case 11 by mounting the negative electrode side attaching / detaching member 100N.

2. Effect According to the lead storage battery 1, the degree of freedom in the assembly direction of the external terminal 90 can be increased, and deformation of the plate terminals 80P and 80N can be suppressed. In addition, in this configuration, the connection terminals 85 of the plate terminals 80P and 80N are prevented from rotating with respect to the inner lid 40 with a simple structure in which the deformation regulating wall 130 is simply fitted into the groove portion 84, and the plate terminals 80P and 80N are prevented. Can be prevented from being deformed. Moreover, since the deformation | transformation control wall 130 is plate shape, there exists a merit that the shape of the detachable members 100P and 100N does not become complicated.

  Moreover, since the detachable members 100P and 100N have an attachment structure using the front wall 87 which is a connection surface of the external terminal 90, the existing plate terminals 80P and 80N can be used as they are.

  Further, the detachable members 100P and 100N are “U-shaped”, and can be formed by only bending the plate by making the plate itself linear, so that the processing is easy and inexpensive. Moreover, since the detachable members 100P and 100N are fixed to the plate terminals 80 with bolts B, they can be easily attached to and detached from the plate terminals 80P and 80N.

  Further, the deformation regulating walls 130 of the detachable members 100P and 100N are fitted in the groove portions 84 of the plate terminals 80P and 80N, and the plate terminals 80P and 80N are located at positions where the detachable members 100P and 100N are close to the polar column connection portion 81. It is the structure which contacts with. Therefore, an increase in electrical resistance due to the attachment / detachment members 100P and 100N being interposed between the external terminal 90 and the plate terminals 80P and 80N can be suppressed.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.

  (1) In the above embodiment, the example in which the groove portion 84 is formed by making the connecting portion 83 of the plate terminal 80 U-shaped has been shown, but the groove portion 84 may not be provided. Further, the structure for preventing the plate terminal 80 from rotating with respect to the lid member 30 is not limited to the structure using the groove portion 84, and the plate terminal 80 may be prevented from rotating without using the groove portion 84. . For example, a structure in which a lock portion provided in the detachable member 100 is locked to a lock hole formed in the lid member 30, and a force applied in the R direction of FIG. 11 when the external terminal 90 is assembled is supported by the lid member 30. By doing so, the plate terminal 80 may be prevented from rotating and the deformation may be restricted.

(2) In the above embodiment, the bolt through holes 86A and 87A are formed in the top wall 86 and the front wall 87 of the plate terminal 80, respectively, so that the external terminal 90 can be assembled from two directions. If the positions of the two bolt through holes 86A and 87A are shifted, the two external terminals 90 can be simultaneously connected to the plate terminal 80. In this case, when the detachable member 100 is attached, the front wall 87 of the plate terminal 80 and the connection portion 120 of the detachable member 100 are attached to two locations.
External terminals 90 can be connected simultaneously.

  (3) In the above embodiment, the example in which the detachable member 100 is connected to the plate terminal 80 by bolting the attachment portion 86 to the front wall 87 of the plate terminal 80 has been described. In addition to the method exemplified in the embodiment, the connecting method of the detachable member 100 to the plate terminal 80 is such that the position of the mounting portion 120 is changed to the upper surface wall 86 side and the mounting portion 120 is bolted to the upper surface wall 86 of the plate terminal 80. Thus, a method of connecting the detachable member 100 to the plate terminal 80 may be used. That is, in the embodiment, the example in which the Z direction is the “first direction” has been described, but the Y direction may be the “first direction”.

  (4) Also, the assembly direction (second direction) when the external terminal 90 is assembled using the detachable member 100 is relative to the assembly direction (first direction) when the external terminal 90 is directly assembled to the plate terminal 80. As long as the directions are different and intersect. That is, in the embodiment, the configuration in which the angle difference between the second direction (X direction) and the first direction (Z direction) is “90 °” is exemplified, but the angle difference between the second direction and the first direction is 90 °. Other than that.

DESCRIPTION OF SYMBOLS 1 ... Lead acid battery 11 ... Battery case 20 ... Electrode board group (an example of "the power generation element" of this invention)
25P, 25N ... Positive pole side pole column, Negative pole side pole column 30 ... Lid member 40 ... Middle lid 64 ... Housing recess (an example of "supporting part" of the present invention)
47P ... Positive electrode side terminal mounting portion 47N ... Negative electrode side terminal mounting portion 80P, 80N ... Positive electrode side plate terminal, negative electrode side plate terminal 81 ... Pole column junction 83 ... Connecting portion 83A ... No. One vertical wall (an example of the “opposite wall” in the present invention)
83B ... second vertical wall (an example of the "opposite wall" of the present invention)
84 ... groove part 85 ... connection part (an example of the "first connection part" of the present invention)
100P, 100N ... positive electrode side attaching / detaching member, negative electrode side attaching / detaching member 110 ... mounting portion 120 ... connecting portion (an example of "second connecting portion" in the present invention)
130 ... Deformation restriction wall (an example of the "deformation restriction part" of the present invention)

Claims (7)

Power generation elements,
A casing for housing the power generation element;
A plate-like terminal attached to the casing and electrically connected to the power generation element, and a plate terminal having a first connection portion capable of connecting an external terminal by screw tightening from a first direction;
The second terminal is detachable from the first connection part of the plate terminal, and is connected to the external terminal by screwing from the second direction intersecting the first direction in a state of being connected to the plate terminal. A detachable member having a connecting portion,
In the state where the detachable member is attached to the plate terminal, when the external terminal is connected to the second connection portion by screw tightening or when the connection by screw tightening is released, the plate is attached to the casing. A lead storage battery including a deformation restricting portion capable of restricting deformation of a terminal. The lead acid battery according to claim 1,
The said casing is a lead acid battery which has a support part which can support the said deformation | transformation control part in the state in which the said attachment / detachment member was connected to the said plate terminal. The lead acid battery according to claim 2,
A pole pole connected to the power generation element;
The plate terminal is connected to the pole column joined to the pole column;
A connecting portion that is fixed to the support portion of the casing, and that connects the pole column joint portion and the first connection portion;
The lead acid battery in which the said connection part is contacting with the said deformation | transformation control part. The lead acid battery according to claim 3,
The connecting portion has a pair of opposing walls facing each other with a gap therebetween,
The deformation regulating portion of the detachable member is a lead storage battery fitted between the pair of opposed walls. The lead acid battery according to claim 4,
The detachable member is
Bending from both sides of the plate-like second connecting portion, and having two extending portions extending in parallel with the second direction,
One of the extension portions is the deformation restricting portion fitted between the pair of opposing walls, and the other extension portion is an attachment portion attached to the first connection portion of the plate terminal. Lead acid battery. The lead-acid battery according to any one of claims 1 to 5,
The casing has a rectangular parallelepiped shape having a first side surface and a second side surface orthogonal to the first side surface,
The first connection portion of the plate terminal is disposed along the first side surface of the casing at a corner portion of the casing,
The lead storage battery in which the second connection portion of the detachable terminal attached to the plate terminal is disposed along the second side surface of the casing. A lead-acid battery detachable member comprising a plate terminal having a first connection portion connectable by screw tightening from a first direction and a casing to which the plate terminal is attached,
An attachment portion attachable to the first connection portion;
In a state where it is mounted on the plate terminal, a second connection portion that can be connected by screw tightening from the second direction intersecting the first direction with the external terminal,
When the external terminal is connected to the second connection portion by screw tightening or attached to the plate terminal, or when the connection by screw tightening is released, the deformation of the plate terminal is restricted with respect to the casing. A detachable member for a lead storage battery, comprising a possible deformation restricting portion.

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