JP2017037705A - Checker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a checker capable of facilitating checking of location accuracy of a member constructing a battery module when assembling the battery module.SOLUTION: A checker 60, checking location accuracy of a heat transfer plate 50 fixed on a battery cell 11 arranged in an X-axis direction in which the battery cell 11 is held by a pair of end plates 16, 16, has a first surface 63 parallel to a fixed surface on which the battery module is fixed by end plates and includes a body part 61 in contact with the pair of end plates; a plurality of detection units 70 disposed to face each of the heater transfer plates in the first surface and detecting the presence of a contact with the heat transfer plate; and a notice unit 80 making notification of a detection result by the plurality of detection units.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an inspection apparatus that inspects the positional accuracy of members constituting a battery module.

  A battery pack in which a battery module in which a plurality of battery cells held in a battery holder are arranged is attached to a housing or the like is known. Patent Document 1 discloses a battery pack in which heat dissipation is improved by attaching a heat transfer plate to a battery holder and bringing the heat transfer plate into contact with a housing. In a battery module including such a heat transfer plate, the distance between the heat transfer plate and the casing when the battery module is attached to the casing is important from the viewpoint of maintaining heat dissipation.

  Based on such a situation, in such a battery module, when the battery module is attached to the housing, the distance from the housing (reference position) to the heat transfer plate is managed within a predetermined range. For example, the distance from the housing may be measured for each heat transfer plate, and a plurality of positions may be measured for one heat transfer plate.

JP-T 8-506205

  However, the inspection method for confirming the position accuracy of the members to be inspected one by one is very laborious. Moreover, since the battery cells arranged as a battery module are fixed with, for example, a double-sided tape or the like, it is difficult to adjust the position once assembled. Therefore, it is preferable to assemble the battery module while confirming the positional accuracy of the parts constituting the battery module.

  Therefore, an object of the present invention is to provide an inspection apparatus that can easily inspect the positional accuracy of members constituting the battery module when the battery module is assembled.

  An inspection apparatus of the present invention is an inspection apparatus that inspects the positional accuracy of a battery cell of a battery module in which battery cells arranged in a first direction are sandwiched between a pair of end plates or a heat transfer plate fixed to the battery cell. A first surface parallel to a fixed surface to which the battery module is fixed by the end plate, and a main body portion that is brought into contact with the pair of end plates, and facing each of the battery cell or the heat transfer plate on the first surface. And a plurality of detection units that detect presence or absence of contact with the battery cell or the heat transfer plate, and a notification unit that notifies detection results of the plurality of detection units.

  In the inspection apparatus having this configuration, the contact of the battery cell or the heat transfer plate with the detection unit disposed on the first surface serving as the reference position can be confirmed for each battery cell or heat transfer plate. That is, the operator can grasp the battery cell or the heat transfer plate that is not arranged at the specified position by a simple operation of bringing the main body portion into contact with the pair of end plates. Thereby, at the time of an assembly of a battery module, the positional accuracy of the battery cell or heat-transfer plate which comprises a battery module can be confirmed easily, and it can assemble while adjusting the position of a battery cell or a heat-transfer plate.

  In the inspection apparatus of the present invention, a plurality of detection units may be provided in a second direction orthogonal to the first direction with respect to one battery cell or one heat transfer plate.

  In the inspection apparatus having this configuration, the positional accuracy of the battery cell or the heat transfer plate can be confirmed at a plurality of positions in the second direction, so that the presence or absence of the inclination of the battery cell or the heat transfer plate can be confirmed. Thereby, the position accuracy of the members constituting the battery module can be inspected with higher accuracy.

  In the inspection apparatus of the present invention, a notification unit may be provided for each detection unit. In the inspection apparatus having this configuration, it is easy to check the positional accuracy for each battery cell or heat transfer plate.

  In the inspection apparatus of the present invention, the detection unit is arranged outside the specified region, the first detection unit capable of detecting the battery cell or the heat transfer plate arranged in the specified region in the second direction orthogonal to the first direction. And a second detector capable of detecting the battery cell or the heat transfer plate. According to the inspection device having this configuration, it is possible to easily confirm the positional accuracy of the battery cell or the heat transfer plate with respect to the second direction orthogonal to the first direction.

  In the inspection apparatus of the present invention, the detection unit includes a first contact unit, a second contact unit, a connection unit that electrically connects one end of the first contact unit and one end of the second contact unit via a power source. There may be provided a continuity detection unit that detects a current flowing through the connection unit by contact between the other end of the first contact unit and the other end of the second contact unit. In the inspection apparatus having this configuration, it is possible to easily confirm that the battery cell or the heat transfer plate is disposed at the specified position with a simple configuration.

  In the inspection apparatus of the present invention, the detection result may be notified by light emission. In the inspection apparatus having this configuration, it is possible to easily confirm whether the position accuracy is good or bad.

  ADVANTAGE OF THE INVENTION According to this invention, the position accuracy of the member which comprises a battery module can be easily test | inspected at the time of an assembly of a battery module.

It is a perspective view which shows the battery module which has a heat-transfer plate which is a test object. It is a top view when the test | inspection apparatus of one Embodiment is attached to the battery module of FIG. It is a perspective view which decomposes | disassembles and shows the cell holder holding a battery cell. It is the top view which looked at the inspection device concerning one embodiment from the upper part. It is the front view which looked at the test | inspection apparatus of FIG. 4 from the battery module side. It is the front view which expanded and showed the detection part of FIG. (A) is a block diagram which shows schematic structure of a detection part, (b) is a block diagram which shows schematic structure of the detection part in the state which the heat-transfer plate contacted. It is the front view which looked at the inspection apparatus concerning a modification from the battery module side.

  An inspection apparatus 60 (see FIG. 4) according to an embodiment will be described. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted. The dimensional ratios in the drawings do not necessarily match those described. In the description, terms indicating directions such as “up” and “down” are convenient terms based on the state shown in the drawings.

  First, the battery module 1 provided with the heat-transfer plate 50 used as the test object of the test | inspection apparatus 60 is demonstrated. As shown in FIGS. 1 and 2, the battery module 1 includes an array 20 in which a plurality (seven) of the battery modules 11 are arranged along the X-axis direction (first direction) with the battery cell 11 held by the cell holder 31. have.

  As shown in FIG. 3, the battery cell 11 is a battery in which an electrode assembly (not shown) is accommodated in a rectangular box-shaped case 11 </ b> A. For example, a non-aqueous electrolyte 2 such as a lithium ion secondary battery is used. Next battery. The configuration of the cell holder 31 will be described in detail later.

  As shown in FIG. 2, the battery module 1 includes an elastic member 12, a restraining portion 15, and a plurality of bus bars 14 in addition to the array body 20. The elastic member 12 is formed in a flat plate shape by rubber, for example, and is arranged on one side in the arrangement direction (X-axis direction) of the array body 20. FIG. 2 shows a state in which a cover arranged to face the electrode terminal 13 of the battery cell 11 is removed.

  The restraining portion 15 restrains the battery cell 11 and the elastic member 12 by pressing in the arrangement direction. The restraining portion 15 includes a pair of end plates 16, 16, bolts 17, nuts 18, and a middle plate 19. The pair of end plates 16 and 16 are formed of a material having high rigidity such as iron, for example. Bolts 17 that are sequentially inserted into one end plate 16, each cell holder 31, and the other end plate 16 are screwed together by nuts 18 on the other end plate 16 side.

  The electrode terminals 13 of the adjacent battery cells 11 are electrically connected to each other by a bus bar 14 which is a rectangular plate member formed of a metal such as copper. More specifically, each battery cell 11 has a positive electrode terminal and a negative electrode terminal as electrode terminals 13, and the plurality of battery cells 11 are arranged so that electrode terminals 13 having different polarities are adjacent to each other. The bus bar electrically connects the plurality of battery cells 11 in series by connecting these adjacent electrode terminals 13 to each other.

  Next, the configuration of the cell holder 31 will be described mainly with reference to FIG. Hereinafter, as shown in FIG. 3, the thickness direction of the battery cell 11 when the cell holder 31 holds the battery cell 11, the width direction of the battery cell 11 (the arrangement direction of the electrode terminals 13 and 13), and the thickness of the battery cell 11. The height direction orthogonal to the direction and the width direction is also referred to as “X-axis direction (first direction)”, “Y-axis direction”, and “Z-axis direction (second direction)”, respectively.

  As shown in FIG. 3, the cell holder 31 has a rectangular flat plate-like lower surface portion 35, a pair of side surface portions 37, 37, a base portion 41, a pair of terminal accommodating portions 43, 43, and a pair of column members 47, 47. doing. Further, a control device or the like can be disposed on the upper portion of the cell holder 31 via a cover.

  The lower surface part 35 is a plate-like member extending in the Y-axis direction. The lower surface portion 35 covers the bottom surface of the battery cell 11 when holding the battery cell 11. A pair of leg portions 35 </ b> A and 35 </ b> A are provided at the lower portions of both end portions of the lower surface portion 35. The leg portion 35A is provided with an insertion hole 35B penetrating along the X-axis direction. The bolt 17 described above is inserted into the insertion hole 35B.

  The pair of side surface portions 37 and 37 are plate-like members extending in the Z-axis direction. The pair of side surface portions 37 and 37 are disposed at both ends of the lower surface portion 35 in the Y-axis direction. A pair of side surface parts 37 and 37 are arrange | positioned so that it may mutually oppose. The base part 41 is a plate-like member that extends in the Y-axis direction. The base portion 41 is provided so as to connect the pair of side surface portions 37 and 37 with the thickness direction directed in the X-axis direction.

  The pair of terminal accommodating portions 43 and 43 are provided at both ends of the upper end of the base portion 41 in the Y-axis direction. The terminal accommodating portion 43 is provided so as to be connected to the side surface portion 37. The terminal accommodating portion 43 opens in a U shape in the X-axis direction. The terminal accommodating portion 43 is a portion that surrounds the electrode terminal 13 of the battery cell 11 when holding the battery cell 11.

  The pair of column members 47 and 47 are provided adjacent to each of the pair of terminal accommodating portions 43 and 43 at the upper end of the base portion 41. The column member 47 is a quadrangular columnar column member extending in the X-axis direction, and its length matches the X-axis direction length of the lower surface portion 35. The column member 47 is provided with an insertion hole 47A penetrating along the X-axis direction. The above-described bolt 17 is inserted into the insertion hole 47A.

  In the cell holder 31, the accommodating portion S in which the battery cell 11 is accommodated by the space surrounded by the lower surface portion 35, the pair of side surface portions 37 and 37, the base portion 41, the terminal accommodating portions 43 and 43, and the column members 47 and 47. Is formed.

  Subsequently, the inspection apparatus 60 according to an embodiment will be described. The inspection device 60 inspects the mounting position accuracy of the heat transfer plate 50 that is one of the members constituting the battery module 1. Specifically, as shown in FIG. 2, the gap G between the heat transfer plate 50 and the housing, which is generated when the battery module 1 is attached to the housing (not shown) of the battery pack, in other words, the heat transfer. The amount of protrusion of the heat plate 50 from the array 20 is inspected. As shown in FIGS. 4 and 5, the inspection device 60 includes a main body 61, a detection unit 70, and a notification unit 80.

  The main body 61 includes a first surface 63 parallel to a fixed surface to which the battery module 1 is fixed by a pair of end plates 16 and 16, and a second surface 65 that is brought into contact with the pair of end plates 16 and 16. Have. As shown in FIG. 2, the first surface 63 (fixed surface) is a direction in which the positive electrode terminal 13 and the negative electrode terminal 13 face each other in each battery cell 11 arranged in the first direction (X-axis direction) ( It is a plane orthogonal to the (Y-axis direction). In other words, the first surface 63 is a surface that is orthogonal to both the direction in which the battery cells 11 are arranged (first direction) and the direction that is orthogonal to the surface in which the electrode terminals 13 are disposed in each battery cell 11. . The main body 61 is used by being fixed in contact with the pair of end plates 16 and 16. The pair of end plates 16 and 16 are fixed to a second surface 65 parallel to the first surface 63. The distance t1 from the first surface 63 to the second surface 65 is a clearance (specified) between the heat transfer plate 50 and the housing to be secured when the battery module 1 is attached to the battery pack housing (not shown). It is formed in accordance with the gap G1).

  The detection unit 70 is disposed on the first surface 63 of the main body unit 61. The detection part 70 is arrange | positioned facing each of the heat-transfer plate 50, and detects the presence or absence of the contact with the heat-transfer plate 50. Further, two detectors 70 are arranged in the Y-axis direction so as to face each heat transfer plate 50.

  As shown in FIGS. 6, 7 (a) and 7 (b), the detection unit 70 includes a first contact portion 71, a second contact portion 73, one end 71 a of the first contact portion 71, and a second contact portion 71. A connecting portion 75 that electrically connects one end 73a of the contact portion 73 via a power source 77, and the other end 71b of the first contact portion 71 and the other end 73b of the second contact portion 73 are in contact with the heat transfer plate 50. Thus, a continuity detecting unit 79 that detects a current flowing through the connecting unit 75 is provided.

  As shown in FIG. 6, the first contact portion 71 and the second contact portion 73 are formed concentrically, and the second contact portion 73 is disposed inside the first contact portion 71. The first contact portion 71 and the second contact portion 73 are formed of a conductive member. The 1st contact part 71 and the 2nd contact part 73 are arrange | positioned so that it may protrude from the 1st surface 63 in the main-body part 61, The protrusion amount is 0.5 mm. The 1st contact part 71 and the 2nd contact part 73 are good also as a structure which can adjust the said protrusion amount. That is, the 1st contact part 71 and the 2nd contact part 73 are good also as a structure which can be adjusted according to the prescription | regulation clearance gap G1.

  As shown in FIG. 5, two first contact portions 71 and two second contact portions 73 are arranged in the Z-axis direction. The first contact portion 71 and the second contact portion 73 are arranged at a position (H2 = H1 × 1/10) that is 1/10 of the length H1 of the main body portion 61 in the Z-axis direction from the upper end of the main body portion 61. Yes. Similarly, the first contact portion 71 and the second contact portion 73 are located at a position (H2 = H1 × 1/10) that is 1/10 of the length H1 of the main body 61 in the Z-axis direction from the lower end of the main body 61. Has been placed.

  Moreover, the 1st contact part 71 and the 2nd contact part 73 are arrange | positioned in the X-axis direction in the position facing the center position in the X-axis direction of the heat exchanger plate 50. When the length (width) of the heat transfer plate 50 in the X-axis direction is about 25 mm, the heat transfer plate 50 is often disposed at a position facing the center position in the X-axis direction.

  The connection part 75 electrically connects the one end 71 a of the first contact part 71 and the one end 73 a of the second contact part 73 via the power source 77. An example of the connecting portion 75 is a cable formed of a conductive member, a wiring formed on a substrate, or the like. An example of the power source 77 is a battery. When the other end 71b of the first contact portion 71 and the other end 73b of the second contact portion 73 are in contact with each other, a current can flow through the connection portion 75.

  The continuity detection unit 79 is provided on the connection unit 75 and detects that a current flows through the connection unit 75. The continuity detection unit 79 of the present embodiment is a lamp such as an LED (Light Emitting Diode), and a current flows through the connection unit 75 (the first contact unit 71 and the second contact unit 73 have the same heat transfer plate 50). Light). That is, the continuity detection unit 79 of this embodiment also serves as the notification unit 80.

As described above, the notification unit 80 is a lamp such as an LED, and notifies the detection result of the continuity detection unit 79. That is, when the notification unit 80 detects that a current has flowed through the connection unit 75, the notification unit 80 notifies the worker by emitting light. As shown in FIG. 4, the notification unit 80 is disposed on the side surface 67 of the main body unit 61. The notification unit 80 is provided for each detection unit 70. That is, in the inspection apparatus 60 of the present embodiment in which two detection units 70 are arranged with respect to one heat transfer plate 50, two notification units 80 are arranged with respect to one heat transfer plate 50. .
That is, one of the two notification units 80 is a notification unit 80 corresponding to the detection unit 70 disposed on the upper side in the Z-axis direction, and the other is provided on the detection unit 70 disposed on the lower side in the Z-axis direction. The corresponding notification unit 80.

  Subsequently, an inspection method using the inspection apparatus 60 described above will be described. As shown in FIG. 2, the inspection device 60 is fixed by bringing the second surface 65 of the main body 61 into contact with the pair of end plates 16 and 16. Each of the pair of end plates 16, 16 is attached to the second surface 65 of the main body 61.

  When the inspection device 60 is fixed to the battery module 1, the heat transfer plate 50 disposed at a normal position (specified position) contacts the detection unit 70, but is not transmitted at a normal position (specified position). The heat plate 50 does not contact the detection unit 70. In the detection unit 70 in which the heat transfer plate 50 is in contact with the one end 71a of the first contact unit 71 and the one end 73a of the second contact unit 73, a current flows through the connection unit 75 as shown in FIG. Thus, the continuity detection unit 79 detects the current flowing through the connection unit 75. That is, the LED as the conduction detecting unit 79 emits light. The light emission of the LED may be on or flashing. By emitting the LED, it is possible to notify the operator that the heat transfer plate 50 is in a normal position. On the other hand, the operator can notify that the heat transfer plate 50 is not in a normal position by confirming that the LED does not emit light. That is, the LED functions as the notification unit 80.

  In addition, LED as the alerting | reporting part 80 is good also as a structure which light-emits, when the heat-transfer plate 50 exists in an abnormal position. In this case, a signal from the detection unit 70 may be input to a PLC (Programmable Logic Controller) to determine the presence or absence of the abnormality, and when it is determined that there is an abnormality, the PLC may cause the notification unit 80 to operate. . In this case, a limit switch or the like may be provided on the second surface 65 so that the detection start of the heat transfer plate 50 can be determined. Note that the method for detecting the presence or absence of an abnormality can be changed as appropriate.

  Since the detection part 70 is provided for every heat-transfer plate 50, the operator confirms the light emission state of the alerting | reporting part 80 corresponding to the said detection part 70, ie, LED, for every heat-transfer plate 50. The position accuracy can be confirmed.

  In the above embodiment, as shown in FIG. 5, two detection units 70 are provided in the Z-axis direction. Therefore, not only the displacement of the heat transfer plate 50 in the Y-axis direction but also the inclination in the Z-axis direction. Can also be easily confirmed. For example, among the two detection units 70 corresponding to one heat transfer plate 50, the LED corresponding to the detection unit 70 disposed on the upper side in the Z-axis direction emits light, and the detection unit disposed on the lower side in the Z-axis direction. When the LED corresponding to 70 does not emit light, it can be confirmed that the lower portion of the heat transfer plate 50 is displaced in the Y-axis direction. Further, for example, among the two detection units 70 corresponding to one heat transfer plate 50, the LED corresponding to the detection unit 70 arranged on the upper side in the Z-axis direction does not emit light and is arranged on the lower side in the Z-axis direction. When the LED corresponding to the detection unit 70 emits light, it can be confirmed that the upper portion of the heat transfer plate 50 is displaced in the Y-axis direction.

  Then, the effect of the inspection apparatus 60 demonstrated above is demonstrated. In the inspection device 60 of the above embodiment, the contact of the heat transfer plate 50 with the detection unit 70 arranged on the first surface 63 serving as the reference position can be confirmed for each heat transfer plate 50. That is, the operator can grasp the heat transfer plate 50 that is not arranged at the specified position by a simple operation of bringing the main body 61 into contact with the pair of end plates 16 and 16. As a result, when the battery module 1 is assembled, the positional accuracy of the heat transfer plate 50 constituting the battery module 1 can be easily confirmed, and the heat transfer plate 50 can be assembled while adjusting the position thereof.

  In the inspection apparatus having this configuration, the position accuracy of the heat transfer plate 50 can be confirmed at a plurality of positions in the Z-axis direction, and therefore the presence or absence of the inclination of the heat transfer plate 50 can be confirmed. That is, in the inspection device 60 of the above-described embodiment, the upper side in the Z-axis direction of the heat transfer plate 50 protrudes to the front side in the Y-axis direction (inspection device 60 side), or the lower side is the front side in the Y-axis direction (inspection). It can be easily confirmed whether or not it has jumped out to the device 60 side). Thereby, the position accuracy of the members constituting the battery module 1 can be inspected with higher accuracy.

  Although one embodiment has been described above, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the invention.

  In the above embodiment, an example in which the two detection units 70 and 70 are arranged along the Z-axis direction (second direction) has been described. However, one or three or more detections are performed in the Z-axis direction. The part 70 may be formed. When one detection unit 70 is provided in the Z-axis direction, the detection unit 70 is preferably arranged at a position corresponding to the vicinity of the center portion in the Z-axis direction of the heat transfer plate 50 to be detected.

  Moreover, although the said embodiment or modification demonstrated and demonstrated the example in which all the detection parts 70 were arrange | positioned so that the heat-transfer plate 50 arrange | positioned in the regulation area | region A1 in the Z-axis direction was detectable, this book The invention is not limited to this. For example, as illustrated in FIG. 8, in the inspection apparatus 160 according to the modification, the detection unit 70 is capable of detecting the heat transfer plate 50 arranged in the specified region A1 in the Z-axis direction. And a second detection unit 70B capable of detecting the heat transfer plate 50 disposed outside the prescribed region A2.

  Although not shown, a notification unit 80 such as an LED is provided on the side surface 67 of the main body 61 for each detection unit 70. That is, in the inspection device 160 of a modified example in which the four detection units 70 are arranged with respect to one heat transfer plate 50, the four notification units 80 are arranged.

  According to the inspection apparatus 160 according to this modified example, the positional accuracy of the heat transfer plate 50 that is arranged so as to be shifted in the Z-axis direction can be easily confirmed. For example, if the LED corresponding to the second detection unit 70B that can detect the heat transfer plate 50 arranged outside the specified region A2 in the Z-axis direction emits light, the heat transfer plate 50 is arranged shifted in the Z-axis direction. Can be confirmed. Moreover, also when LED corresponding to the 1st detection part 70A which can detect the heat-transfer plate 50 arrange | positioned in the prescription | regulation area | region A1 in a Z-axis direction does not light-emit, the heat-transfer plate 50 shifts | deviates and arranges in a Z-axis direction. Can be confirmed. Moreover, if the light emission state of LED corresponding to one heat transfer plate 50 is confirmed, it can be confirmed in which direction (upward or downward in the Z-axis direction) the heat transfer plate 50 is displaced.

  Moreover, in the said embodiment or modification, as FIG. 6 shows, the 1st contact part 71 and the 2nd contact part 73 in the detection part 70 are formed in concentric form, The 2nd contact part 73 is Although the example arrange | positioned inside the 1st contact part 71 was given, the 1st contact part 71 may be arrange | positioned inside the 2nd contact part 73. FIG. Further, the first contact portion 71 and the second contact portion 73 may be arranged side by side in the Z-axis direction.

  In the above embodiment or modification, the LED serving as the notification unit 80 has been described as an example disposed on the side surface 67 of the main body 61. For example, the side opposite to the first surface 63 of the main body 61 is described. It may be arranged on the back of the. Further, the notification unit 80 may not be provided in the main body unit 61. For example, it is good also as a structure which alert | reports the detection result by the detection part 70 by sending out the information detected by the conduction | electrical_connection detection part 79 to LED etc. which are arrange | positioned at another terminal device, for example.

  Moreover, in the said embodiment or modification, although LED was mentioned as an example as an example of the alerting | reporting part 80, it is good also as a structure which alert | reports by an audio | voice etc., for example. Moreover, it is good also as a structure which transmits the information detected by the conduction | electrical_connection detection part 79 to a personal computer or an information terminal etc., and alert | reports the detection result by the detection part 70, for example.

  Moreover, although the said embodiment or modification demonstrated and demonstrated the example in which the alerting | reporting part 80 which alert | reports a detection result was provided for every detection part 70, for example, the detection result of the detection part 70 with respect to the one heat exchanger plate 50 is demonstrated. It is good also as a structure which alert | reports collectively. For example, in the said embodiment, when the two detection parts 70 detect the heat transfer plate 50, it alert | reports that the heat transfer plate 50 is arrange | positioned normally, and at least one detection part 70 is heat transfer. When the plate 50 is not detected, it may be configured to notify that the heat transfer plate 50 is not normally arranged.

  In the said embodiment or modification, although the example which test | inspects the positional accuracy of the heat-transfer plate 50 which is one of the members which comprise the battery module 1 was given and demonstrated, the cell holder 31 holding the battery cell 11 or the battery cell 11 is demonstrated. It is also possible to inspect the positional accuracy.

  In the said embodiment or modification, although the method which test | inspects the positional accuracy of the member which comprises the battery module 1 was shown by attaching the test | inspection apparatus 60,160 to the battery module 1 used as an object, it is limited to this. Not. For example, the inspection devices 60 and 160 may be incorporated in a production line where the battery module 1 is manufactured. For example, the inspection devices 60 and 160 may be attached to a part of the production line conveyed from the previous process at the stage where the fastening process is left. In this case, the operator can perform the same inspection as described above by fixing the battery module 1 to be assembled to the inspection devices 60 and 160.

  DESCRIPTION OF SYMBOLS 1 ... Battery module, 11 ... Battery cell, 16 ... End plate, 20 ... Array, 31 ... Cell holder, 50 ... Heat-transfer plate, 60, 160 ... Inspection apparatus, 61 ... Main-body part, 63 ... 1st surface, 67 ... Side surface, 70 ... detection unit, 70A ... first detection unit, 70B ... second detection unit, 71 ... first contact unit, 73 ... second contact unit, 75 ... connection unit, 77 ... power source, 79 ... conduction detection unit, 80: Notification unit.

Claims (6)

An inspection device for inspecting the positional accuracy of the battery cell of the battery module in which the battery cells arranged in the first direction are sandwiched between a pair of end plates or the heat transfer plate fixed to the battery cell,
A main body having a first surface parallel to a fixed surface to which the battery module is fixed by the end plate, and being brought into contact with the pair of end plates;
A plurality of detectors arranged to face each of the battery cells or the heat transfer plate on the first surface and detecting presence or absence of contact with the battery cells or the heat transfer plate;
An informing unit for informing the detection results of the plurality of detecting units;
An inspection apparatus comprising:   The inspection device according to claim 1, wherein a plurality of the detection units are provided in a second direction orthogonal to the first direction with respect to one battery cell or one heat transfer plate.   The inspection apparatus according to claim 1, wherein the notification unit is provided for each detection unit.   The detection unit includes a first detection unit capable of detecting the battery cell or the heat transfer plate arranged in a specified region in a second direction orthogonal to the first direction, and the detection unit arranged outside the specified region. The inspection device according to claim 1, further comprising a second detection unit capable of detecting a battery cell or the heat transfer plate.   The detection unit includes a first contact unit, a second contact unit, a connection unit that electrically connects one end of the first contact unit and one end of the second contact unit via a power source, and the first The inspection apparatus according to claim 1, further comprising: a conduction detection unit configured to detect a current flowing through the connection unit by contact between the other end of the contact unit and the other end of the second contact unit.   The inspection device according to claim 1, wherein the notification unit notifies the detection result by light emission.

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