Voltage sensing unit and conductive module

Abstract

To provide a voltage detection unit and a conduction module with excellent assembly workability.SOLUTION: A plate-shaped housing 40 includes a terminal housing recess 42 in which a voltage detection terminal 10 is fitted and accommodated. The voltage detection terminal 10 includes a first portion 11 extending in a left-right direction, a second portion 12 extending in a front-rear direction, and a corner portion 13 connecting one end portions of the first portion 11 and the second portion 12, and is provided in a line-symmetrical L-shape. A conductive plate 4 is conductively connected to a tip portion 11a of the first portion 11. A second point 12a connected to an electric wire 20 is provided at a tip 12a of the second portion 12. A cover 30 is provided to be locked to the housing 40 at a temporary locking position where the tip 11a of the voltage detection terminal 10 housed in the terminal housing recess 42 is not covered and a full locking position where the tip 11a is covered.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a voltage sensing unit and a conductive module. [Background technology]

[0002] Conventionally, there has been proposed a stacked type energy storage device configured to connect a plurality of energy storage modules in series via the conductive plate by repeatedly stacking thin, chargeable and dischargeable energy storage modules and conductive plates in an alternating arrangement. The energy storage module used in this type of energy storage device generally has a structure in which a plurality of battery cells are built therein, and functions as a single chargeable and dischargeable battery. In one conventional energy storage device, in order to monitor the voltage of each energy storage module, a detection terminal such as a bus bar is connected to a conductive plate in contact with the electrode surface of each energy storage module, and the voltage of each energy storage module is measured via this detection terminal (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-161340 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the conventional energy storage device described above, insertion holes for inserting detection terminals are provided on the side edges of the conductive plates, and the detection terminals are connected to the conductive plates by inserting the detection terminals into the insertion holes of the conductive plates from the sides of the stack of the energy storage modules and the conductive plates. However, with this conventional connection method, it is difficult to improve the ease of assembly because it is complicated to align the insertion holes of the conductive plates with the detection terminals when inserting the detection terminals.

[0005] An object of the present invention is to provide a voltage detection unit and a conductive module that are easy to assemble. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, a voltage detection unit and a conductive module according to the present invention are characterized by the following [1] to [6]. [1] a plate-shaped voltage detection terminal having a first portion to be conductively connected to a detection object and a second portion to be connected to an electric wire; a plate-shaped housing having a terminal accommodating recess into which the voltage detection terminal is fitted, The voltage detection terminal is provided in an axisymmetric L-shape. It is a voltage detection unit. [2] [1] The voltage detection unit according to the present invention, the voltage detection terminal is formed in an L-shape having a first portion extending in a first direction, a second portion extending in a second direction intersecting the first direction, and a corner portion connecting one ends of the first portion and the second portion to each other; The first portion is provided at the other end of the first portion, The second portion is provided at the other end of the second part. It is a voltage detection unit. [3] [2] The voltage detection unit according to the present invention, The voltage detection terminal has an inclined surface formed on an outer side of the corner portion, the inclined surface being spaced apart from the other end of the second portion as it approaches the other end of the first portion. It is a voltage detection unit. [4] [1]-[3], the voltage detection unit according to any one of the above, The housing further includes a cover that can be engaged with the housing at a temporary engagement position that does not cover the first location of the voltage detection terminal accommodated in the terminal accommodating recess, and at a full engagement position that covers the first location. It is a voltage detection unit. [5] A conductive plate laminated and connected to the storage module; The voltage detection unit according to any one of claims 1 to 4, wherein the conductive plate is the detection target; A plate-shaped opposing unit; The conductive plate is sandwiched between the voltage detection unit and the opposing unit to couple them together. It is a conductive module. [6] [5] The conductive module according to the present invention, The opposing unit is composed of a second voltage detection unit provided in a mirror-inverted shape of the voltage detection unit according to any one of claims 1 to 4, with the conductive plate at the center. It is a conductive module.

[0007] According to the voltage detection unit and conductive module having the configurations [1] and [5] above, the voltage detection terminal is fitted and accommodated in the terminal accommodating recess of the housing. This allows the voltage detection terminal to be easily positioned. In addition, the voltage detection terminal is formed in an axisymmetric L-shape. This allows the voltage detection terminal to have the same shape when viewed from the front and back, making it possible to fit the voltage detection terminal into the terminal accommodating recess of the housing without checking the front and back, and improving assembly workability. Moreover, the axisymmetric voltage detection terminal takes on a mirror shape when rotated, so it can also be accommodated in a mirror product of the voltage detection unit. According to the voltage detection unit having the configuration [2] above, the detection target can be positioned on the other end side of the first portion of the voltage detection terminal, and the electric wire can be drawn out from the other end side of the second portion. According to the voltage detection unit having the configuration [3] above, by cutting out the outside of the corner through which current does not easily flow and providing an inclined surface, it is possible to reduce the size of the voltage detection terminal. According to the voltage detection unit having the configuration [4] above, the detection object can be connected to the first location with the cover temporarily engaged, and after the connection, the cover can be fully engaged to cover and protect the voltage detection terminal. According to the conductive module having the configuration of [6] above, the voltage detection terminal is formed in an axisymmetric L-shape. This allows the voltage detection terminal arranged in the voltage detection unit to be rotated and fitted into the terminal accommodating recess of the second voltage detection unit. In other words, the voltage detection terminal can be shared between the voltage detection unit and the second voltage detection unit, which is a mirror product of the voltage detection unit, and the installation workability is excellent. Effect of the Invention

[0008] According to the present invention, it is possible to provide a voltage detection unit and a conductive module that are easy to assemble.

[0009] The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by reading the following description of the embodiment of the present invention (hereinafter, referred to as "embodiment") with reference to the accompanying drawings. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a partially exploded perspective view of a stacked storage battery including a voltage detection unit according to an embodiment of the present invention. [Diagram 2] 2(a) is a cross-sectional view taken along line AA in FIG. 1, and FIG. 2(b) is an enlarged view of part B in FIG. 2(a). [Diagram 3] FIG. 3 is a perspective view showing a part of the conductive module shown in FIG. 1 in an exploded manner. [Figure 4] FIG. 4 is an exploded perspective view of the housing and the voltage detection terminal shown in FIG. [Diagram 5] FIG. 5 is a perspective view of the housing and the voltage detection terminal shown in FIG. [Figure 6] 6 is a top view and a partial side view of the voltage detection terminal shown in FIG. [Figure 7] FIG. 7 is a bottom view showing the housing in which the voltage detection terminal and the electric wires are accommodated, and the cover. [Figure 8]FIG. 8(a) is a top view showing a state in which the cover is locked to the housing at the provisionally locked position, and FIG. 8(b) is a cross-sectional view taken along line CC of FIG. 8(a). [Figure 9] FIG. 9(a) is a top view showing a state in which the cover is locked to the housing at the full locking position, and FIG. 9(b) is a sectional view taken along line DD of FIG. 9(a). [Figure 10] FIG. 10 is a schematic top view of a conductive module according to another embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] <Embodiment> Hereinafter, a voltage detection unit 5 according to an embodiment of the present invention will be described with reference to the drawings. For ease of explanation, the following terms are defined as shown in Fig. 1, etc.: "front-rear direction", "left-right direction", "up-down direction", "front", "rear", "left", "right", "up", and "down". The "front-rear direction", "left-right direction", and "up-down direction" are mutually perpendicular.

[0012] The voltage detection unit 5 is typically used in a stacked type energy storage device 1 shown in Fig. 1. The energy storage device 1 is configured by stacking rectangular thin plate-shaped chargeable and dischargeable energy storage modules 2 and rectangular thin plate-shaped conductive modules 3 capable of electrically connecting adjacent energy storage modules 2 alternately in the vertical direction. In the energy storage device 1, the multiple energy storage modules 2 are electrically connected in series via the conductive modules 3. The energy storage module 2 has a structure in which multiple battery cells (not shown) are built in, and the energy storage module 2 as a whole functions as a single chargeable and dischargeable battery.

[0013] As shown in FIG. 1, the conductive module 3 is configured to have a rectangular thin plate shape as a whole, including a rectangular thin plate-shaped conductive plate 4 (the conductive plate 4 also functions as a heat sink, as described later), a rectangular thin plate-shaped voltage detection unit 5 connected to the right side of the conductive plate 4, and a rectangular thin plate-shaped opposing unit 6 connected to the left side of the conductive plate 4. As shown in FIG. 1, the conductive plate 4 is sandwiched between the voltage detection unit 5 and the opposing unit 6. As shown in FIG. 1 to FIG. 3 (particularly FIG. 2(a)), the conductive plate 4 and the voltage detection unit 5 are connected to each other by fitting a flange portion 4a extending in the front-rear direction provided on the right end surface of the conductive plate 4 to a recessed portion 5a extending in the front-rear direction provided on the left end 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 4b extending in the front-rear direction provided on the left end surface of the conductive plate 4 to a recessed portion 6a extending in the front-rear direction provided on the right end surface of the opposing unit 6.

[0014] 2(a), in each conductive module 3 located between vertically adjacent power storage modules 2, the conductive plate 4 is in direct contact with the upper and lower power storage modules 2. Therefore, the conductive plate 4 functions to provide electrical continuity between the lower surface of the upper power storage module 2 and the upper surface of the lower power storage module 2, as well as to function as a heat sink that releases heat generated from the upper and lower power storage modules 2 to the outside.

[0015] In each conductive module 3 located between vertically adjacent storage modules 2, the voltage detection unit 5 includes a voltage detection terminal 10 (see FIG. 2, etc.), which will be described later, that contacts the conductive plate 4. The voltage detection unit 5 serves to output a signal indicating the voltage of the storage module 2 via an electric wire 20 (see FIG. 1, etc.) connected to this voltage detection terminal 10.

[0016] In each conductive module 3 located between vertically adjacent power storage modules 2, either a dummy unit or a temperature detection unit is applied as the opposing unit 6 depending on the specifications of the power storage device 1.

[0017] When the dummy unit is applied, as shown in Fig. 3, a simple resin plate having a recess 6a extending in the front-rear direction is used as the opposing unit 6. In this case, the opposing unit 6 only serves to fill the gap between the upper and lower energy storage modules 2.

[0018] When a temperature detection unit is applied, a structure in which a temperature sensor 7 (thermistor) is embedded in a resin plate used as a dummy unit, as shown in Fig. 1, is used as the opposing unit 6. In this case, the opposing unit 6 functions to output a signal indicating the temperatures of the upper and lower storage modules 2 via an electric wire 7a (see Fig. 1) connected to the temperature sensor 7.

[0019] A specific configuration of a voltage detection unit 5 according to an embodiment of the present invention will be described below with reference to Fig. 3 to Fig. 9. As shown in Fig. 3, the voltage detection unit 5 includes a housing 40, a voltage detection terminal 10 housed in the housing 40, an electric wire 20 connected to the voltage detection terminal 10 and housed in the housing 40, and a cover 30 attached to the housing 40.

[0020] First, the voltage detection terminal 10 will be described. The metallic voltage detection terminal 10 is formed by performing processing such as pressing on a single metal plate. As shown in Fig. 4 and Fig. 5, the voltage detection terminal 10 is fitted and accommodated in the terminal accommodating recess 42 of the housing 40 from above. As shown in Fig. 6, the voltage detection terminal 10 is provided in an L-shape that is line-symmetrical with respect to the straight line L as viewed from the top-bottom direction.

[0021] More specifically, as shown in Fig. 6, the voltage detection terminal 10 is formed in an L-shape having a first portion 11 extending in a left-right direction (first direction), a second portion 12 extending in a front-rear direction perpendicular to the left-right direction, and a corner portion 13 connecting one end of the first portion 11 and the second portion 12. The angle between a straight line L, which is the axis of the voltage detection terminal 10, and the left-right direction is equal to the angle between the straight line L and the front-rear direction. The lengths D1 and D2 of the first portion 11 and the second portion 12 are equal. In this embodiment, the angle between the first portion 11 and the second portion 12 is 90°.

[0022] In this embodiment, an inclined surface 13a is formed at the outer corner 13 of the L shape, which is inclined away from the tip 12a (other end, second location) which is the other end of the second portion 12 as it approaches the tip 11a (other end, first location) of the first portion 11. In this embodiment, a protrusion 13b protruding along a straight line L from the inclined surface 13a is provided.

[0023] A part of the flange 4a of the conductive plate 4 is fixed to the underside of the tip 11a (i.e., the end on the left side) which is the other end of the first portion 11 by a method such as ultrasonic bonding or welding (see FIG. 2(b)). One end of the electric wire 20 is fixed to the underside of the tip 12a (i.e., the end on the rear side) of the second portion 12 so as to be electrically connected. The other end of the electric wire 20 is connected to a voltage measuring device (not shown) outside the energy storage device 1.

[0024] Next, the cover 30 will be described. As shown in Figs. 7 to 9, the cover 30 is a resin molded product, and is attached to the cover attachment recess 41 of the housing 40 from the right side. The cover 30 is composed of a facing portion 31 and an extending portion 32 extending rearward from the facing portion 31. The facing portion 31 mainly functions to cover and protect the voltage detection terminal 10, and the extending portion 32 mainly functions to cover and protect the electric wire 20.

[0025] The facing portion 31 is composed of a pair of flat plate portions 33 facing each other with a gap therebetween in the vertical direction, and a connecting portion 34 that connects right end edges of the pair of flat plate portions 33 extending in the front-rear direction to each other in the vertical direction over the entire front-rear direction. The facing portion 31 has a substantially U-shaped shape that opens to the left when viewed from the front-rear direction. Each flat plate portion 33 is composed of a substantially square flat plate-like base portion 33a connected to the connecting portion 34, and a rectangular flat plate-like extension portion 33b extending leftward from the front end portion of the base portion 33a, and has a substantially L-shaped shape as a whole when viewed from the vertical direction. The extension portion 32 extends flush and continuously rearward from the rear end edge of the upper flat plate portion 33 (more specifically, the upper base portion 33a) of the pair of flat plate portions 33 that constitute the facing portion 31, and has a substantially rectangular flat plate-like shape.

[0026] A locking portion 36 that protrudes upward toward the upper flat plate portion 33 is formed at a predetermined location of the lower flat plate portion 33 (more specifically, the lower base portion 33a) of the pair of flat plate portions 33 that constitute the facing portion 31 (see Figs. 8(b) and 9(b)). The locking portion 36 cooperates with a temporary locking portion 55 and a permanent locking portion 56, which will be described later, that are provided on the housing 40, to lock the cover 30 at a temporary locking position (see Fig. 8) and a permanent locking position (see Fig. 9).

[0027] Next, the housing 40 will be described. The housing 40 is a resin molded product, and has a generally rectangular thin plate shape extending in the front-rear direction as shown in Figures 1 and 3. A recess 5a is formed in the left end face of the housing 40, recessed to the right and extending in the front-rear direction. A flange portion 4a of the conductive plate 4 is fitted into the recess 5a (see Figure 2, etc.).

[0028] At the locations on the top and bottom surfaces of the housing 40 where the cover 30 is attached, cover attachment recesses 41 are formed that are recessed and have a shape corresponding to the overall shape of the cover 30 (see Figs. 4 and 5). The recess depth (depth in the vertical direction) of the cover attachment recess 41 is equal to the plate thickness of the resin material that constitutes the cover 30 (opposing portion 31+extending portion 32). Therefore, when the cover 30 is attached to the housing 40, the surface of the housing 40 and the surface of the cover 30 become flush with each other (see Fig. 1).

[0029] A terminal accommodating recess 42 having a shape corresponding to the overall shape of the voltage detection terminal 10 is formed at a location on the bottom surface 41a of the cover mounting recess 41 on the upper surface side of the housing 40 where the voltage detection terminal 10 is accommodated (see FIGS. 4 and 5). The recess depth (depth in the vertical direction) of the terminal accommodating recess 42 is equal to the plate thickness of the voltage detection terminal 10. Therefore, when the voltage detection terminal 10 is attached to the housing 40, the upper surface of the voltage detection terminal 10 and the bottom surface 41a of the cover mounting recess 41 are flush with each other (see FIGS. 8(b) and 9(b)).

[0030] 7 and 8, a notch 43 that is recessed to the right in a substantially rectangular shape when viewed from the top and bottom is formed on the left edge of the housing 40 at a position in the front-to-back direction where the tip 11a of the voltage detection terminal 10 is disposed. The recess 5a extending in the front-to-back direction on the left end face of the housing 40 is divided by the notch 43. When the voltage detection terminal 10 is accommodated in the housing 40, the top and bottom surfaces of the tip 11a of the voltage detection terminal 10 are exposed by the notch 43 (see FIG. 8(b)).

[0031] A through hole 44 extending in the front-rear direction and penetrating in the up-down direction is formed in the terminal accommodating recess 42 at a location where the tip 12a of the voltage detection terminal 10 is disposed. When the voltage detection terminal 10 is accommodated in the housing 40, one end (contact point) of the electric wire 20 connected to the voltage detection terminal 10 enters the through hole 44 (see FIG. 7). In other words, the through hole 44 functions as a relief portion for avoiding interference between the bottom surface 42a of the terminal accommodating recess 42 and the one end of the electric wire 20.

[0032] An electric wire receiving recess 46 is formed in the upper surface of the housing 40 at a location where the electric wire 20 is received. The electric wire receiving recess 46 is recessed in a shape corresponding to the arrangement of the electric wire 20 when the electric wire 20 is received.

[0033] Next, a procedure for assembling the voltage detection terminal 10 and the cover 30 to the housing 40 will be described. First, the voltage detection terminal 10 to which the electric wire 20 has been connected in advance by a method such as ultrasonic bonding or welding is accommodated in the terminal accommodation recess 42 of the housing 40. As described above, the voltage detection terminal 10 is formed in an axisymmetric L-shape. This allows the voltage detection terminal 10 to have the same shape when viewed from the front and back, and the electric wire 20 can be connected and fitted into the terminal accommodation recess 42 of the housing 40 without checking the front and back. At this time, the voltage detection terminal 10 is fitted into the terminal accommodation recess 42 of the housing 40 from above so that one end (contact point) of the electric wire 20 enters the through hole 44. When the accommodation of the voltage detection terminal 10 in the housing 40 is completed, the upper and lower surfaces of the tip portion 11a of the voltage detection terminal 10 are exposed by the notch 43 (see FIG. 8(b)).

[0034] Next, the electric wire 20 extending from the voltage detection terminal 10 accommodated in the housing 40 is accommodated in the electric wire accommodating recess 46 of the housing 40. When the accommodation of the electric wire 20 in the housing 40 is completed, the electric wire 20 extends from the electric wire pull-out opening 49 rearward to the outside of the housing 40.

[0035] Next, the cover 30 is attached to the housing 40. For this purpose, the cover 30 is attached to the cover mounting recess 41 of the housing 40 from the right side so that the facing portions 31 of the cover 30 sandwich the cover mounting recess 41 on the upper and lower surfaces of the housing 40 from above and below, and so that the extension portion 32 of the cover 30 covers the cover mounting recess 41 on the upper surface side of the housing 40.

[0036] In the process of mounting the cover 30 to the housing 40, the locking portion 36 of the cover 30 enters the interior of the temporary locked portion 55 and engages with the temporary locked portion 55 (see FIG. 8(b)). This causes the cover 30 to be locked to the housing 40 at the temporary locked position, completing the mounting of the cover 30 to the housing 40 (see FIG. 8), and obtaining the voltage detection unit 5 (see FIG. 3). As will be described later, the voltage detection unit 5 obtained after completing the mounting of the cover 30 to the housing 40 (with the cover 30 locked in the temporary locked position) is used for assembling the conductive module 3 (see FIG. 1).

[0037] 8(a), when the cover 30 is locked in the provisionally locked position, the opposing portion 31 (more specifically, the pair of upper and lower extending portions 33b) of the cover 30 do not cover the tip portion 11a of the voltage detection terminal 10. Therefore, the upper and lower surfaces of the tip portion 11a of the voltage detection terminal 10 are still exposed by the notch 43 (see FIG. 8(b)).

[0038] When the cover 30 is pushed further to the left relative to the housing 40 while the cover 30 is locked in the temporary locking position, the locking portion 36 of the cover 30 climbs over the temporary locking portion 55 and then enters the inside of the permanent locking portion 56 and engages with the permanent locking portion 56 (see FIG. 9). As a result, the cover 30 is locked to the housing 40 in the permanent locking position.

[0039] As described above, the voltage detection unit 5 obtained after the attachment of the cover 30 to the housing 40 is completed (with the cover 30 locked in the provisionally locked position) is used for assembling the conductive module 3 (see FIG. 1). Specifically, first, as shown in FIG. 3, the flange portion 4a of the conductive plate 4 and the recessed portion 5a of the voltage detection unit 5 are fitted together, so that the voltage detection unit 5 is connected to the right side of the conductive plate 4.

[0040] In this state, as can be seen from Figures 3 and 8(b), a portion of the flange portion 4a of the conductive plate 4 is positioned so as to overlap the underside of the tip portion 11a of the voltage detection terminal 10 (see also Figure 2(b)), and due to the presence of the notch 43 in the housing 40, the upper surface of the tip portion 11a of the voltage detection terminal 10 is exposed upward, and the lower surface of a portion of the flange portion 4a of the conductive plate 4 is exposed downward.

[0041] Next, the tip portion 11a of the voltage detection terminal 10 and a part of the flange portion 4a of the conductive plate 4 are fixed to each other by a method such as ultrasonic bonding or welding, using the upper surface of the tip portion 11a of the voltage detection terminal 10 exposed upward and the lower surface of a part of the flange portion 4a of the conductive plate 4 exposed downward. Thereafter, the cover 30 is moved from the provisional locking position to the full locking position, and the assembly of the voltage detection unit 5 and the conductive plate 4 is completed.

[0042] Next, the flange portion 4b of the conductive plate 4 and the recessed portion 6a of the facing unit 6 are fitted together, so that the facing unit 6 is connected to the left side of the conductive plate 4 to which the voltage detection unit 5 is attached (see FIG. 2, etc.). This completes the assembly of the conductive module 3.

[0043] The conductive module 3 thus obtained is used to assemble the energy storage device 1 shown in Fig. 1. Specifically, the energy storage modules 2 and the conductive modules 3 are stacked alternately in the vertical direction, and the stack is fixed with a predetermined metal fitting or the like to obtain the energy storage device 1.

[0044] According to the embodiment described above, the voltage detection terminal 10 is fitted and accommodated in the terminal accommodating recess 42 of the housing 40. This allows easy positioning of the voltage detection terminal 10. Also, the voltage detection terminal 10 is formed into an axisymmetric L-shape. This allows the voltage detection terminal 10 to have the same shape when viewed from the front and back, and allows the terminal to be fitted into the terminal accommodating recess 42 of the housing 40 without checking the front and back, resulting in excellent assembly workability.

[0045] Furthermore, according to the above-described embodiment, the voltage detection terminal 10 is formed in an L-shape having a first portion 11 extending in the left-right direction, a second portion 12 extending in the front-rear direction, and a corner portion 13 connecting one end of the first portion 11 and the second portion 12, and the conductive plate 4 is connected to a tip portion 11a which is the other end of the first portion 11, and the electric wire 20 is connected to a tip portion 12a which is the other end of the second portion 12. This allows the conductive plate 4 to be positioned on the tip portion 11a side of the first portion 11 of the voltage detection terminal 10, and the electric wire 20 to be drawn out from the tip portion 12a side of the second portion 12.

[0046] Furthermore, according to the above-described embodiment, the voltage detection terminal 10 is formed with an inclined surface 13a on the outside of the corner 13, which inclines away from the tip 12a of the second portion 12 as it approaches the tip 11a of the first portion 11. As a result, by cutting out the outside of the corner 13, through which current does not easily flow, and providing the inclined surface 13a, the voltage detection terminal 10 can be made smaller.

[0047] Furthermore, according to the embodiment described above, the cover 30 is provided so as to be able to be engaged with the housing 40 at a provisionally engaged position where the cover 30 does not cover the tip 11a of the voltage detection terminal 10 accommodated in the terminal accommodating recess 42, and at a fully engaged position where the cover 30 covers the tip 11a. This allows the conductive plate 4 to be connected to the tip 11a in a provisionally engaged state of the cover 30, and the cover 30 to be fully engaged to cover and protect the voltage detection terminal 10.

[0048] The present invention is not limited to the above-described embodiments, and various modifications can be adopted within the scope of the present invention. For example, the present invention is not limited to the above-described embodiments, and appropriate modifications, improvements, etc. are possible. In addition, the material, shape, size, number, arrangement location, etc. of each component in the above-described embodiments are arbitrary as long as the present invention can be achieved, and are not limited.

[0049] 1 to 3 described in the embodiment above, the voltage detection unit 5 is disposed on the right side of the conductive plate 4, but the voltage detection unit 5 may be disposed on the left side of the conductive plate 4. In this case, a voltage detection unit obtained by reversing the entire configuration of the voltage detection unit 5 (i.e., a mirror product of the voltage detection unit 5) is used.

[0050] Whether the voltage detection unit 5 is placed on the right side or the left side depends on the specifications. For this reason, two types of voltage detection units are prepared: the voltage detection unit 5 shown in FIG. 1 and the like, and a mirror product of this voltage detection unit 5. The voltage detection terminal 10 described above is provided in an axisymmetric L-shape. As a result, if the voltage detection terminal 10 is rotated 90°, it can also be applied to the mirror product of the voltage detection unit 5. In other words, the voltage detection terminal 10 can be shared between the voltage detection unit 5 and the mirror product of the voltage detection unit 5.

[0051] In the above-described embodiment, either one of the dummy unit and the temperature detection unit is applied as the opposing unit 6, but as shown in FIG. 10, a voltage detection unit may be applied as the opposing unit 6. The voltage detection unit 6 (second voltage detection unit) as the opposing unit 6 is provided in a shape that is a mirror inversion of the voltage detection unit 5 shown in FIG. 1 and the like, with the conductive plate 4 at the center. That is, the voltage detection unit 6 includes a housing 40m that is a mirror product of the housing 40, a voltage detection terminal 10, and a cover 30m that is a mirror product of the cover 30. The voltage detection terminal 10 is rotated from the one used in the voltage detection unit 5 and is accommodated in the housing 40m. In this case, the voltage detection terminal 10 can be shared between the voltage detection unit 5 and the voltage detection unit 6 that is a mirror product of the voltage detection unit 5.

[0052] Here, the features of the embodiments of the voltage detection unit and conductive module according to the present invention described above will be briefly summarized and listed in the following [1] to [6]. [1] a plate-shaped voltage detection terminal (10) having a first portion (11a) to be conductively connected to a detection target (4) and a second portion (12a) to be connected to an electric wire (20); a plate-shaped housing (40) having a terminal accommodating recess (42) into which the voltage detection terminal (10) is fitted and accommodated, The voltage detection terminal (10) is provided in an axisymmetric L-shape. Voltage sensing unit (5). [2] In the voltage detection unit (5) according to [1], The voltage detection terminal (10) is formed in an L-shape having a first portion (11) extending in a first direction, a second portion (12) extending in a second direction intersecting the first direction, and a corner portion (13) connecting one ends of the first portion (11) and the second portion (12) to each other, The first portion (11) is provided at the other end thereof with the first location (11a), The second portion (12a) is provided at the other end of the second part (12). Voltage sensing unit (5). [3] In the voltage detection unit (5) according to [2], The voltage detection terminal (10) has an inclined surface (13a) formed on the outer side of the corner portion (13) such that the inclined surface (13a) becomes more distant from the other end (12a) of the second portion (12) as the inclined surface (13a) becomes closer to the other end (11a) of the first portion (11). Voltage sensing unit (5). [4] In the voltage detection unit (5) according to any one of [1] to [3], the housing (40) further includes a cover (30) that can be engaged with the housing (40) at a temporary engagement position that does not cover the first location (11a) of the voltage detection terminal (10) accommodated in the terminal accommodating recess (42) and at a full engagement position that covers the first location (11a). Voltage sensing unit (5). [5] A conductive plate (4) stacked on and connected to the storage module (2); A voltage detection unit (5) according to any one of claims 1 to 4, the voltage detection unit (5) detecting the conductive plate (4); A plate-shaped opposing unit (6), The conductive plate (4) is sandwiched between the voltage detection unit (5) and the opposing unit (6). Conductive module (3). [6] A conductive module (3) according to [5], The opposing unit (6) is composed of a second voltage detection unit (6) provided in a mirror-inverted shape of the voltage detection unit (5) according to any one of claims 1 to 4, with the conductive plate (4) at the center. Conductive module (3). [Explanation of symbols]

[0053] 3 Conductive Module 2. Energy storage module 4 Conductive plate (detection target) 5 Voltage Detection Unit 6 Opposite unit, voltage detection unit 10 Voltage detection terminal 11 Part 1 11a Tip portion (other end portion, first portion) 12 Part 2 12a Tip portion (other end portion, second portion) 13 Corner 13a Slope 20 Electric wire 30 Cover 40 Housing 42 Terminal receiving recess

Claims

1. a plate-shaped voltage detection terminal having a first portion to be conductively connected to a detection object and a second portion to be connected to an electric wire; a plate-shaped housing having a terminal accommodating recess into which the voltage detection terminal is fitted, The voltage detection terminal is provided in an axisymmetric L-shape. Voltage sensing unit.

2. 2. The voltage detection unit according to claim 1, the voltage detection terminal is formed in an L-shape having a first portion extending in a first direction, a second portion extending in a second direction intersecting the first direction, and a corner portion connecting one ends of the first portion and the second portion to each other; The first portion is provided at the other end of the first portion, The second location is provided at the other end of the second portion. Voltage sensing unit.

3. 3. The voltage detection unit according to claim 2, The voltage detection terminal has an inclined surface formed on an outer side of the corner portion, the inclined surface being spaced apart from the other end of the second portion as it approaches the other end of the first portion. Voltage sensing unit.

4. The voltage detection unit according to any one of claims 1 to 3, a cover that can be engaged with the housing at a temporary engagement position that does not cover the first location of the voltage detection terminal accommodated in the terminal accommodating recess, and at a full engagement position that covers the first location, Voltage sensing unit.

5. A conductive plate laminated and connected to the storage module; The voltage detection unit according to any one of claims 1 to 4, wherein the conductive plate is the detection target; A plate-shaped opposing unit; The conductive plate is sandwiched between the voltage detection unit and the opposing unit to couple them together. Conductive module.

6. The conductive module according to claim 5 , The opposing unit is composed of a second voltage detection unit provided in a mirror-inverted shape of the voltage detection unit according to any one of claims 1 to 4, with the conductive plate at the center. Conductive module.

Images