Battery stack plate and conductive module

Abstract

To provide a plate for a battery stack which can inhibit misalignment of a conductive plate relative to a housing, and to provide a conductive module including the plate for the battery stack.SOLUTION: In a plate-like housing 54, a fitting groove 541 for fitting with a flange part 41 of each of conductive plates 4 respectively disposed between multiple power storage modules 2 stacked is recessed. An engagement projection 546 is provided in the fitting groove 541 and engages with an engagement hole 43 provided at the flange part 41 of the conductive plate 4 to restrict movement of the conductive plate 4 in a left direction.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a plate for a battery stack and a conductive module.

Background Art

[0002] Conventionally, various power storage devices have been proposed. For example, the power storage device disclosed in Patent Document 1 includes a plurality of stacked power storage modules and a plurality of plate-like members (conductive modules) disposed between the power storage modules. The plurality of power storage modules and the plurality of plate-like members are disposed between a pair of insulating plates and are formed into a laminated body (battery stack) having a substantially rectangular parallelepiped shape by applying a restraining force by a restraint.

[0003] The plate-like member has a cooling plate (conductive plate) and an insulating portion (housing). The cooling plate is disposed between the insulating portions.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] A conventional plate-like member has a structure in which both sides in the length direction of the cooling plate are simply sandwiched between insulating members. For this reason, there has been a problem that the cooling plate moves with respect to the insulating member.

[0006] The present invention has been made in view of the above circumstances, and an object thereof is to provide a plate for a battery stack that can suppress displacement of a conductive plate with respect to a housing and a conductive module including the plate for a battery stack.

Means for Solving the Problems

[0007] To achieve the aforementioned objectives, the battery stack plate according to the present invention has the following features. A plate-shaped housing with a recessed fitting groove on its side surface for fitting into the side edges of conductive plates that are placed between multiple stacked energy storage modules. and, A voltage detection terminal is electrically connected to the side edge of the conductive plate fitted into the fitting groove, A wire connected electrically to the aforementioned voltage detection terminal, Equipped with, The housing has a locking portion provided in the fitting groove that engages with a locking portion provided on the side edge of the conductive plate, thereby restricting the conductive plate from moving in the disengaging direction. The housing includes a terminal housing recess in which the voltage detection terminal is housed, a wire housing recess in which the wire is housed, and an outlet for bringing the wire housed in the wire housing recess out of the housing. to have death , The locking portions are arranged in a plurality of directions that intersect both the engagement release direction and the plate thickness direction. In the voltage detection terminal, the conductive connection portion with the side edge of the conductive plate is provided at a position sandwiched between the locking portion and the locking portion. It must be a plate for battery stacking.

[0008] To achieve the aforementioned objectives, the conductive module according to the present invention has the following features. The above battery stack plate, The conductive plate described above comprises It must be a conductive module. [Effects of the Invention]

[0009] The battery stack plate and conductive module according to the present invention have the effect of suppressing misalignment of the conductive plate relative to the housing.

[0010] The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by referring to the attached drawings and reading through the embodiments for carrying out the invention described below (hereinafter referred to as "embodiments"). [Brief explanation of the drawing]

[0011] [Figure 1]FIG. 1 is a perspective view showing a partially disassembled laminated battery stack including a voltage detection unit and a counter unit as plates for a battery stack according to an embodiment of the present invention. [Figure 2] FIG. 2 is an exploded perspective view of the conductive module shown in FIG. 1. [Figure 3] FIG. 3 is an exploded perspective view of the voltage detection unit shown in FIG. 2. [Figure 4] FIG. 4 is a partial cross-sectional view taken along line A-A of FIG. 1. [Figure 5] FIG. 5 is a partially enlarged perspective view of the housing constituting the voltage detection unit shown in FIG. 2.

MODE FOR CARRYING OUT THE INVENTION

[0012] Hereinafter, a laminated battery stack including a voltage detection unit and a counter unit as plates for a battery stack according to an embodiment of the present invention will be described with reference to the drawings.

[0013] Hereinafter, for convenience of explanation, as shown in FIG. 1 and the like, “front-back direction (FB)”, “left-right direction (RL direction)”, “up-down direction (UD direction)”, “front (F)”, “rear (B)”, “left (L)”, “right (R)”, “up (U)”, and “down (D)” are defined. The “front-back direction”, “left-right direction”, and “up-down direction” are orthogonal to each other.

[0014] A conductive module 3 provided with a voltage detection unit and a counter unit as plates for a battery stack is typically used in the laminated battery stack 1 shown in FIG. 1. The battery stack 1 is configured by alternately laminating rectangular thin plate-shaped rechargeable power storage modules 2 and rectangular thin plate-shaped conductive modules 3 that can electrically connect between adjacent power storage modules 2 in the up-down direction. In the battery stack 1, a plurality of power storage modules 2 are electrically connected in series via the conductive module 3. The power storage module 2 has a structure in which a plurality of battery cells (not shown) are built therein, and functions as one rechargeable battery as a whole for the power storage module 2.

[0015] As shown in Fig. 1, the conductive module 3 is composed of a rectangular thin plate-shaped conductive plate 4 (the conductive plate 4 also has a function as a heat sink as will be described later), a voltage detection unit 5 as a rectangular thin plate-shaped plate for a battery stack connected to the right side of the conductive plate 4, and an opposing unit 6 as a rectangular thin plate-shaped plate for a battery stack connected to the left side of the conductive plate 4, and is configured to have a rectangular thin plate shape as a whole. The voltage detection unit 5 and the opposing unit 6 are connected with the conductive plate 4 sandwiched therebetween.

[0016] In this specification, the thickness direction of the plate-shaped conductive plate 4, the voltage detection unit 5, and the opposing unit 6 is the vertical direction, the longitudinal direction is the front-rear direction, and the short-side direction is the left-right direction.

[0017] Also, as shown in Fig. 2, the conductive plate 4 and the voltage detection unit 5 are connected to each other by fitting a flange portion (side edge portion) 41 extending in the front-rear direction provided at the right edge of the conductive plate 4 and a fitting groove 541 extending in the front-rear direction recessed in the left plate side surface of the voltage detection unit 5. The conductive plate 4 and the opposing unit 6 are connected to each other by fitting a flange portion 42 extending in the front-rear direction provided at the left edge of the conductive plate 4 and a fitting groove 61 extending in the front-rear direction recessed in the right plate side surface of the opposing unit 6.

[0018] The fitting groove 541 provided in the voltage detection unit 5 is open to the left, and the flange portion 41 is inserted into the fitting groove 541 from this opening. Then, the flange portion 41 is moved rightward to fit the fitting groove 541 and the flange portion 41. That is, in the voltage detection unit 5, the right direction is the fitting direction, and the left direction is the fitting release direction. Also, the fitting groove 61 provided in the opposing unit 6 is open to the right, and the flange portion 42 is inserted into the fitting groove 61 from this opening. Then, the flange portion 42 is moved leftward to fit the fitting groove 61 and the flange portion 42. That is, in the opposing unit 6, the left direction is the fitting direction, and the right direction is the fitting release direction.

[0019] In each conductive module 3 located between adjacent energy storage modules 2, the conductive plate 4 is in direct contact with the upper and lower energy storage modules 2, as shown in Figure 1. Therefore, the conductive plate 4 serves to provide electrical conductivity between the lower surface of the upper energy storage module 2 and the upper surface of the lower energy storage module 2, as well as to function as a heat sink that dissipates heat generated from the upper and lower energy storage modules 2 to the outside.

[0020] In each conductive module 3 located between adjacent energy storage modules 2, the voltage detection unit 5 is equipped with a voltage detection terminal 52 (see Figure 3, etc.) which will be described later and contacts the conductive plate 4. The voltage detection unit 5 performs the function of outputting a signal indicating the voltage of the energy storage module 2 via a wire 53 (see Figure 3, etc.) connected to this voltage detection terminal 52.

[0021] In each conductive module 3 located between adjacent energy storage modules 2, one of the following is applied as the opposing unit 6, depending on the specifications of the battery stack 1: a dummy unit or a temperature sensing unit.

[0022] When a dummy unit is used, the opposing unit 6 is a simple resin plate (housing) having a fitting groove 61 extending in the front-rear direction, as shown in Figure 2. In this case, the opposing unit 6 serves only to fill the gap between the upper and lower energy storage modules 2.

[0023] When a temperature sensing unit is used, the opposing unit 6 is a structure in which a temperature sensor (thermistor) 7 is incorporated into a resin plate (housing) used as a dummy unit, as shown in Figure 1. In this case, the opposing unit 6 performs the function of outputting a signal indicating the temperature of the upper and lower energy storage modules via the wire 8 (see Figure 1) connected to the temperature sensor 7.

[0024] Next, the specific configuration of the voltage detection unit 5 according to an embodiment of the present invention will be described with reference to Figures 3 to 5. As shown in Figure 3, the voltage detection unit 5 comprises a housing 54, a voltage detection terminal 52 housed in the housing 54, an electric wire 53 connected to the voltage detection terminal 52 and housed in the housing 54, and a cover 55 attached to the housing 54.

[0025] The housing 54 is made of a resin plate that is elongated in the front-rear direction and has the fitting groove 541, terminal housing recess 542, wire housing recess 543, and outlet 544 described above. The fitting groove 541 is provided on the left side plate portion of the housing 54. The terminal housing recess 542 is a recess for housing the voltage detection terminal 52 and is recessed in the upper surface of the resin plate. The wire housing recess 543 is a recess for housing the wire 53 and is recessed in the upper surface of the resin plate. In this embodiment, the outlet 544 is provided on the rear end surface of the housing 54, and the wire 53 is pulled out from the rear end of the housing 54.

[0026] The metal voltage detection terminal 52 is formed by pressing or other processing onto a single metal plate. The voltage detection terminal 52 is fitted into the terminal housing recess 542 of the housing 54 from above. As shown in Figure 3, the voltage detection terminal 52 is provided in an L-shape when viewed from above. The housing 54 is provided with a notch 545 that is partially cut out so that the conductive connection portion 521 of the voltage detection terminal 52 with the conductive plate 4 is exposed from below. As a result, when the fitting groove 541 provided in the housing 54 is fitted into the flange portion 41 provided in the conductive plate 4, the conductive connection portion 521 of the voltage detection terminal 52 housed in the housing 54 and the conductive plate 4 overlap and come into contact in the vertical direction. The voltage detection terminal 52 and the conductive plate 4 are electrically connected by ultrasonic connection or the like on this conductive connection portion 521.

[0027] The cover 55 is a molded resin product and is attached to the housing 54 from the right. The cover 55 serves to protect the voltage detection terminal 52 housed in the terminal housing recess 542 and the wire 53 housed in the wire housing recess 543 by covering them from above.

[0028] Next, the locking structure between the housing 54 and the conductive plate 4, which is a feature of this embodiment, will be described. As shown in Figures 4 and 5, a locking projection 546 is provided in the fitting groove 541 of the housing 54 as a locking part that locks onto the conductive plate 4. As shown in Figure 5, the locking projection 546 is provided projecting vertically from one of a pair of vertically opposing inner wall surfaces S1, S1 of the fitting groove 541. The left end of the locking projection 546 is provided with a tapered surface 546A that decreases in height towards the left.

[0029] As shown in Figure 2, the flange portions 41 and 42 of the conductive plate 4 are provided with locking holes 43 that penetrate vertically and serve as locking parts. The locking holes 43 are provided in a roughly rectangular shape when viewed from above. The width of the locking holes 43 in the left-right direction is approximately the same as or slightly larger than the width of the locking projection 546 in the left-right direction. The width of the locking holes 43 in the front-rear direction is approximately the same as or slightly larger than the width of the locking projection 546 in the front-rear direction.

[0030] With the above configuration, when the flange portion 41 is inserted from the left opening of the fitting groove 541, the tip of the flange portion 41 reaches the tapered surface 546A of the locking projection 546. Furthermore, when the flange portion 41 is inserted, the fitting groove 541 deforms so that the distance between the pair of inner wall surfaces S1, S1 increases along the tapered surface 546A. Further insertion of the flange portion 41 causes the locking projection 546 to be inserted into the locking hole 43, and the fitting groove 541 returns to its original state. At this time, the right inner wall surface of the locking hole 43 and the right end surface of the locking projection 546 lock together, restricting the movement of the conductive plate 4 to the left. The right end surface of the locking projection 546 is composed of a vertical surface perpendicular to the left-right direction. In addition, the front inner wall surface and rear inner wall surface of the locking hole 43 and the front end surface and rear end surface of the locking projection 546 lock together, restricting the movement of the conductive plate 4 in the front-rear direction. The front and rear end surfaces of the locking projection 546 are composed of vertical surfaces perpendicular to the front-rear direction. Furthermore, the flange portion 41 of the conductive plate 4 is sandwiched vertically by the pair of inner wall surfaces S1, S1 of the fitting groove 541, thus restricting its movement in the vertical direction as well.

[0031] Furthermore, in this embodiment, as shown in Figure 2, three locking holes 43 are provided in the front-to-back direction of the flange portion 41. Three locking projections 546 that engage with these locking holes 43 are also provided in the front-to-back direction. In this embodiment, the rearmost locking projection 546 in the front-to-back direction protrudes from the lower inner wall surface S1 (see Figure 5), while the middle and frontmost locking projections 546 protrude from the upper inner wall surface S1.

[0032] Furthermore, in this embodiment, the rearmost locking projection 546 in the front-to-back direction is located behind the notch 545 for exposing the conductive connection portion 521 of the voltage detection terminal 52. The middle, frontmost locking projection 546 is located in front of the notch 545. Therefore, the conductive connection portion 521 of the voltage detection terminal 52 is positioned between these two locking projections 546.

[0033] Furthermore, in this embodiment, as shown in Figure 5, the housing 54 is provided with a pair of protective ribs 547, 547 protruding from one of the pair of inner wall surfaces S1, S1, and a pair of protective ribs 548, 548 protruding from the other of the pair of inner wall surfaces S1, S1. The pairs of protective ribs 547, 547 and 548, 548 are arranged side by side in the front-to-back direction and extend in the left-to-right direction. The pairs of protective ribs 547, 547 and 548, 548 are positioned so as to sandwich a locking projection 546 between them. The pairs of protective ribs 547, 547 and the pairs of protective ribs 548, 548 are provided for every three locking projections 546, with three pairs of each pair provided.

[0034] Furthermore, the flange portion 42 of the conductive plate 4 is also provided with locking holes 43. Three locking holes 43 are provided in the flange portion 42, arranged in the front-to-back direction. The resin plate (housing) of the opposing unit 6 is also provided with locking projections (not shown) similar to the locking projections 546 that engage with the locking holes 43 provided in the flange portion 42. As a result, when the flange portion 42 of the conductive plate 4 is fitted into the fitting groove 61 of the opposing unit 6, it engages with the locking holes 43 and the locking projections (not shown).

[0035] According to the embodiment described above, the housing 54 of the voltage detection unit 5 has a locking projection 546 provided in the fitting groove 541 that engages with a locking hole 43 provided in the flange portion 41 of the conductive plate 4, thereby restricting the conductive plate 4 from moving to the left (in the unfitting direction). This makes it possible to suppress the leftward displacement of the conductive plate 4 relative to the housing 54, and ensures stable function as a heat sink.

[0036] According to the embodiment described above, the locking projection 546 and the locking hole 43 are provided to restrict the movement of the conductive plate 4 in the front-rear direction within the fitting groove 541. This suppresses displacement of the conductive plate 4 in the front-rear direction relative to the housing 54, thereby ensuring even more stable function as a heat sink.

[0037] According to the embodiment described above, the housing 54 of the voltage detection unit 5 has a terminal housing recess 542 in which the voltage detection terminal 52 is housed, a wire housing recess 543 in which the wire 53 is housed, and an outlet 544 for leading the wire 53 out of the housing 54. This makes it possible to suppress misalignment of the conductive plate 4 relative to the housing 54 of the voltage detection unit 5, and ensure a stable voltage detection function.

[0038] According to the embodiment described above, the locking projections 546 are arranged in a row in the front-rear direction (three in this embodiment), and the conductive connection portion 521 between the flange portion 41 of the conductive plate 4 and the voltage detection terminal 52 is located between the locking projections 546. This makes it possible to suppress misalignment of the conductive plate 4 around the conductive connection portion 521, thereby ensuring an even more stable voltage detection function.

[0039] According to the embodiment described above, a pair of protective ribs 547, 547 and 548, 548 are provided on the inner wall surfaces S1, S1 of the housing 54. This allows the flange portion 41 to be press-fitted into the fitting groove 541. Furthermore, the locking projection 546 is provided at a position sandwiched between the pair of protective ribs 547, 547. Also, the locking projection 546 is provided at a position sandwiched between the pair of protective ribs 548, 659. This further strengthens the restriction of movement of the conductive plate 4 by the locking projection 546, and ensures an even more stable voltage detection function.

[0040] In the embodiment described above, the locking portion of the conductive plate 4 is composed of a locking hole 43, and the locking portion of the voltage detection unit 5 is composed of a locking projection 546 that is inserted into the locking hole 43. As a result, the metal conductive plate 4 can be formed by punching out the locking hole 43 after extrusion molding in the front-rear direction, and the locking portion can be easily provided on the conductive plate 4.

[0041] Furthermore, the present invention is not limited to the embodiments described above, and can be modified, improved, etc., as appropriate. In addition, the material, shape, dimensions, number, placement, etc. of each component in the embodiments described above are arbitrary and not limited, as long as they can achieve the present invention.

[0042] In the embodiment described above, the voltage detection unit was placed on the right side of the conductive plate 4, but this is not the only option. The dummy unit and temperature sensor unit described above may be placed on the right side of the conductive plate 4, and these dummy unit and temperature sensor unit may be locked to the conductive plate 4.

[0043] In the embodiment described above, the locking projection 546 was provided to restrict the movement of the conductive plate 4 to the left and in the front-rear direction, but it is not limited to this. Since the conductive plate is more likely to move to the left than in the front-rear direction, the locking projection 546 may be provided in a shape that extends in the front-rear direction, and a locking recess extending in the front-rear direction may be provided on the conductive plate 4 to restrict the movement of the conductive plate 4 only to the left.

[0044] According to the embodiment described above, three locking projections 546 and locking holes 43 were provided, but it is sufficient to provide at least one.

[0045] In the embodiment described above, a pair of protective ribs 547, 547 and 548, 548 were provided, but this is not the only option. Providing a pair of protective ribs 547, 547 and 548, 548 is not essential and may be omitted.

[0046] In the embodiment described above, a pair of protective ribs 547, 547, 548, 548 were provided on each of the pair of vertically opposing inner wall surfaces S1, S1, but this is not the only option. The protective ribs 547, 547, 548, 548 may be provided on either one of the pair of vertically opposing inner wall surfaces S1, S1.

[0047] In the embodiment described above, the locking portion of the conductive plate 4 was configured with a locking hole 43, and the locking portion of the voltage detection unit 5 was configured with a locking projection 546, but this is not limited to this configuration. The locking portion of the conductive plate 4 may be configured with a locking projection, and the locking portion of the voltage detection unit 5 may be configured with a locking hole or a locking recess.

[0048] Here, the features of the embodiments of the battery stack plate according to the present invention described above are briefly summarized and listed below in [1] to [7].

[0049] [1] The plate-shaped housing (54) has recessed sides, and fitting grooves (541, 61) for fitting into the side edges (41, 42) of the conductive plates (4) that are each placed between multiple stacked energy storage modules (2) are provided. The housing (54) has a locking portion (546) provided in the fitting groove (541) that locks with a locking portion (43) provided on the side edge (41) of the conductive plate (4), thereby restricting the conductive plate (4) from moving in the disengaging direction (leftward). Battery stacking plate (5).

[0050] According to the battery stack plate (5) in the configuration described in [1] above, misalignment of the conductive plate (4) with respect to the housing (54) in the disengagement direction (leftward) can be suppressed, and stable function as a heat sink can be ensured.

[0051] [2] In the battery stack plate (5) described in [1], The locking portion (546) is provided to restrict the movement of the conductive plate (4) within the fitting groove (541) in a cross direction (front-back direction) that intersects both the release direction (leftward direction) and the plate thickness direction (up-down direction). Battery stacking plate (5).

[0052] The battery stack plate (5) with the configuration described in [2] above can suppress misalignment of the conductive plate (4) with respect to the housing (54) in the intersecting direction (front-back direction), thereby ensuring even more stable function as a heat sink.

[0053] [3] In the battery stack plate (5) described in [1], A voltage detection terminal (52) is electrically connected to the side edge (41) of the conductive plate (4) fitted into the fitting groove (541), The system includes an electric wire (53) that is electrically connected to the voltage detection terminal (52), The housing (54) has a terminal housing recess (542) in which the voltage detection terminal (52) is housed, a wire housing recess (543) in which the electric wire (53) is housed, and an outlet (544) for bringing the electric wire (53) housed in the wire housing recess (543) out of the housing (54). Battery stacking plate (5).

[0054] According to the battery stack plate (5) with the configuration described in [3] above, misalignment of the conductive plate (4) relative to the housing (54) of the battery stack plate (5) for detecting voltage can be suppressed, and a stable voltage detection function can be ensured.

[0055] [4] In the battery stack plate (5) described in [3], The locking portion (546) is provided in a plurality of positions in an intersecting direction (front-to-back direction) that intersects both the engagement release direction (leftward direction) and the plate thickness direction (up-down direction). In the voltage detection terminal (52), the conductive connection portion (521) with the side edge portion (41) of the conductive plate (4) is provided at a position sandwiched between the locking portion (546) and the locking portion (546). Battery stacking plate (5).

[0056] With the battery stack plate (5) configured as described in [4] above, misalignment of the conductive plate (4) around the conductive connection portion (521) can be suppressed, and a more stable voltage detection function can be ensured.

[0057] [5] In the battery stack plate (5) described in [1], The housing (54) has a pair of protective ribs (547, 547) and (548, 548) that protrude from the inner wall surface (S1) facing the thickness direction (vertical direction) of the fitting groove (541), The pair of protective ribs (547, 547) and (548, 548) are arranged side by side in a crossing direction (front-to-back direction) that intersects both the release direction (leftward direction) and the plate thickness direction (up-down direction). The locking portion (546) is provided in a position sandwiched between the pair of protective ribs (547, 547) and (548, 548). Battery stacking plate (5).

[0058] With the battery stack plate (5) configured as described in [5] above, the side edge (41) of the conductive plate (4) can be pressed into the fitting groove (541) by the pair of protective ribs (547, 547) and (548, 548). Furthermore, since the locking portion (546) is provided in a position sandwiched between the pair of protective ribs (547, 547) and (548, 548), the movement restriction of the conductive plate (4) at the locking portion (546) can be further strengthened, and an even more stable voltage detection function can be ensured.

[0059] [6] A battery stack plate (5) as described in any one of items [1] to [5], The conductive plate (4) and the following are provided: Conductive module (3).

[0060] According to the conductive module (3) with the configuration described in [6] above, misalignment of the conductive plate (4) with respect to the housing (54) in the disengagement direction (leftward) can be suppressed, and stable function as a heat sink can be ensured.

[0061] [7] In the conductive module (3) described in [6], The locking portion (43) of the conductive plate (4) is composed of a locking hole (43) that penetrates in the thickness direction (vertical direction), The locking portion (546) of the battery stack plate (5) is composed of a locking projection (546) that is inserted into the locking hole (43). Conductive module (3).

[0062] According to the conductive module (3) with the configuration described in [7] above, the metal conductive plate (4) can be formed by extruding it in the intersecting direction (front-to-back direction) and then punching out the locking holes (43), making it easy to provide the locking portion (43) to the conductive plate (4). [Explanation of Symbols]

[0063] 2 Energy storage modules 3 Conductive Modules 4. Conductive plate 5. Voltage detection unit (plate for battery stack) 6. Opposing Unit (Battery Stack Plate) 41, 42 Flange section (side edge section) 43 Locking hole (locked part) 52 Voltage detection terminal 53 Electric wire 54 Housing 61 Fitting groove 521 Conductive connection 541 Fitting groove 542 Terminal housing recess 543 Wire housing recess 544 Drawer 546 Locking protrusion (locking part) 547, 548 Protective ribs S1 Interior wall surface

Claims

1. A fitting groove for fitting into the side edge of a conductive plate, which is positioned between multiple stacked energy storage modules, is recessed in the side surface of a plate-shaped housing, A voltage detection terminal is electrically connected to the side edge of the conductive plate fitted into the fitting groove, The system comprises a wire electrically connected to the voltage detection terminal, The housing includes a locking portion provided in the fitting groove and engaging with a locking portion provided on the side edge of the conductive plate to restrict the conductive plate from moving in the disengaging direction, a terminal housing recess for housing the voltage detection terminal, a wire housing recess for housing the electric wire, and an outlet for pulling the electric wire housed in the wire housing recess out of the housing. The locking portions are arranged in a plurality of directions that intersect both the engagement release direction and the plate thickness direction. In the voltage detection terminal, the conductive connection portion with the side edge of the conductive plate is provided at a position sandwiched between the locking portion and the locking portion. Battery stacking plate.

2. In the battery stack plate according to claim 1, The locking portion is provided to restrict the movement of the conductive plate within the fitting groove in a direction that intersects both the release direction and the thickness direction. Battery stacking plate.

3. A plate-shaped housing comprising a recessed plate surface for fitting grooves into the side edges of conductive plates that are each arranged between a plurality of stacked energy storage modules, The housing has a locking portion provided in the fitting groove that engages with a locking portion provided on the side edge of the conductive plate, thereby restricting the conductive plate from moving in the disengaging direction. The housing has a pair of protective ribs protruding from the inner wall surface facing the thickness direction of the fitting groove, The pair of protective ribs are arranged in a cross direction that intersects both the release direction and the plate thickness direction. The locking portion is provided in a position sandwiched between the pair of protective ribs. Battery stacking plate.

4. A battery stack plate according to any one of claims 1 to 3, The conductive plate and, Conductive module.

5. In the conductive module according to claim 4, The locking portion of the conductive plate is composed of a locking hole that penetrates in the thickness direction of the plate. The locking portion of the battery stack plate is composed of a locking projection that is inserted into the locking hole. Conductive module.

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