JP2019192542A - Thermistor position detection jig - Google Patents

Abstract

To provide a thermistor position detection jig capable of appropriately detecting the thermistor position for each of two types of assembled batteries in each of which a thermistor is arranged at a position where the thermistor cannot be seen from the outside, and the number of batteries arranged in the row direction is different.SOLUTION: A thermistor position detection jig 70 includes a jig body 71 having a shape extending in the row direction L, and having a notch 71b, 71c, 71d, 71e, 71f indicating the position of a thermistor, and a slide part 74 that is provided to be slidable in the arrangement direction L with respect to the jig body 71 and that changes the position of a notch visible when the thermistor position detection jig 70 is viewed from above by sliding the space between the first position and the second position in the arrangement direction L.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a thermistor position detection jig, and more specifically, to a thermistor position detection jig for detecting the position of the thermistor in an assembled battery in which the thermistor is arranged at a position where it cannot be visually recognized from the outside.

  Patent Document 1 includes a battery module having a battery row in which a plurality of batteries are arranged in a row direction, a plurality of bus bars for connecting electrode external terminals of adjacent batteries in the row direction, and a battery row. An assembled battery including a bus bar module having a thermistor that contacts the upper surface of at least one of the plurality of batteries and detects the temperature of the battery is disclosed.

JP, 2014-220157, A

  In such an assembled battery, the thermistor may be arranged at a position where it cannot be seen from the outside of the assembled battery. However, it may be required to detect the position of the thermistor with respect to the assembled battery disposed at a position where the thermistor cannot be visually recognized from the outside. For example, after a bus bar module is assembled to a battery module to produce an assembled battery, it may be desired to detect (know) the position of the thermistor in the inspection process.

  In addition, as assembled batteries, two types of assembled batteries having different numbers of batteries arranged in the arrangement direction may be manufactured. Specifically, a first assembled battery having a relatively large number of batteries arranged in the row direction and a relatively long length in the row direction, and a number of batteries arranged in the row direction Is a second assembled battery having a relatively small number (less than the first assembled battery) and a relatively short length in the row direction (shorter than the first assembled battery). Thus, in two types of assembled batteries (first assembled battery and second assembled battery) having different numbers of batteries arranged in the row direction, the thermistor position (position in the row direction) is different. There is a case. On the other hand, there are two types of assembled batteries in which the thermistor is arranged at a position where the thermistor cannot be visually recognized from the outside, and the number of batteries arranged in the arrangement direction is different (thus, the length in the arrangement direction is different). For each of the assembled batteries, it has been required to appropriately detect the position of the thermistor.

  The present invention has been made in view of the present situation, and is an assembled battery in which the thermistor is arranged at a position where it cannot be visually recognized from the outside, and the number of batteries arranged in the arrangement direction is different. An object of the present invention is to provide a thermistor position detection jig that can appropriately detect the position of the thermistor for each of the assembled batteries.

  One aspect of the present invention is a battery module having a battery row in which a plurality of batteries are arranged in a row direction, a plurality of bus bars that connect electrode external terminals of the batteries adjacent to each other in the row direction, and A battery pack comprising: a bus bar module having a thermistor that contacts the upper surface of at least one of the plurality of batteries constituting the battery array and detects the temperature of the battery, wherein the thermistor is A thermistor position detecting jig for detecting the position of the thermistor with respect to the assembled battery arranged at a position that cannot be visually recognized from the outside of the assembled battery, the thermistor position detecting jig being arranged in the row direction. Two types of assembled batteries having different numbers of batteries arranged in a row, wherein the number of batteries arranged in the row direction is relatively large, and the length in the row direction is relatively long The position of the thermistor for the long first assembled battery and the second assembled battery in which the number of the batteries arranged in the row direction is relatively small and the length in the row direction is relatively short The thermistor position detection jig is a jig body portion extending in the row direction, and has a notch portion indicating the position of the thermistor. And a thermistor that is slidable in the row direction with respect to the jig body, and slides between the first position and the second position in the row direction. A slide portion that changes the position of the notch portion that can be seen when the position detection jig is viewed from above, and the first assembled battery is disposed at a specified position below the thermistor position detection jig. And the slide portion is in the first position. The notch portion that is visible when the thermistor position detection jig and the first assembled battery are viewed from above in a state where the thermistor position is disposed is configured to indicate the position of the thermistor in the first assembled battery, The thermistor position detecting jig and the second set are arranged in a state where the second assembled battery is arranged at a specified position below the thermistor position detecting jig and the slide portion is arranged at the second position. The notch portion that can be seen when the battery is viewed from above is a thermistor position detection jig configured to indicate the position of the thermistor in the second assembled battery.

  The above-mentioned thermistor position detecting jig is a jig for detecting the position of the thermistor in the assembled battery in which the thermistor is arranged at a position where it cannot be visually recognized from the outside of the assembled battery. More specifically, it is a jig for detecting the position of the thermistor for two types of assembled batteries having different numbers of batteries arranged in the arrangement direction. The two types of assembled batteries to be detected are the first assembled battery having a relatively large number of batteries arranged in the row direction and a relatively long length in the row direction, and the first set battery in the row direction. The second assembled battery has a relatively small number of batteries arranged (smaller than the first assembled battery) and a relatively short length in the arrangement direction (shorter than the first assembled battery). .

  The thermistor position detection jig includes a jig main body and a slide part provided to be slidable in the row direction with respect to the jig main body. Among these, the jig body portion has a form extending in the row direction, and has a notch portion indicating the position of the thermistor (position in the row direction). Further, the slide part is configured to change the position of the notch part that can be visually recognized when the thermistor position detection jig is viewed from the top by sliding in the row direction between the first position and the second position. (Member). Therefore, in this thermistor position detection jig, the thermistor position detection jig can be visually recognized when the slide part is disposed at the first position and when the slide part is disposed at the second position when the thermistor position detection jig is viewed from above. The position of the notch (site indicating the position of the thermistor) can be varied.

  More specifically, in the above-described thermistor position detection jig, the first assembled battery is disposed at a specified position below the thermistor position detection jig (in other words, the thermistor position detection jig is disposed in the first set. A notch portion that is visible when the thermistor position detection jig and the first assembled battery are viewed from the top with the slide portion disposed at the first position. It is comprised so that the position (position concerning a row direction) of the thermistor in 1 set battery may be shown. That is, the first assembled battery is arranged at a prescribed position below the thermistor position detecting jig (in other words, the thermistor position detecting jig is arranged at the prescribed position above the first assembled battery), and the slide The position of the notch that can be seen when the thermistor position detection jig and the first assembled battery are viewed from above with the portion arranged at the first position is the position of the thermistor in the first assembled battery (in the row direction). (This position).

  Therefore, when it is desired to detect the position of the thermistor (position in the row direction) with respect to the first assembled battery, the operator places the first assembled battery at a specified position below the thermistor position detection jig (in other words, The thermistor position detection jig is disposed at a specified position above the first assembled battery), and the thermistor position detection jig and the first assembled battery are viewed from above with the slide portion disposed at the first position. By doing so, it can be detected that the thermistor is present below the visible notch.

  Furthermore, in the above-described thermistor position detection jig, the second assembled battery is disposed at a specified position below the thermistor position detection jig (in other words, the thermistor position detection jig is disposed above the second assembled battery. A notch portion that is visible when the thermistor position detection jig and the second assembled battery are viewed from above with the slide portion disposed at the second position. It is configured to indicate the position of the thermistor. That is, the second assembled battery is disposed at a specified position below the thermistor position detecting jig (in other words, the thermistor position detecting jig is disposed at the specified position above the second assembled battery), and the slide The position of the notch that can be seen when the thermistor position detection jig and the second assembled battery are viewed from above with the portion arranged at the second position is the position of the thermistor in the second assembled battery (in the row direction). (This position).

  Therefore, when it is desired to detect the position of the thermistor (position in the row direction) with respect to the second assembled battery, the operator places the second assembled battery at a specified position below the thermistor position detection jig (in other words, The thermistor position detection jig is arranged at a predetermined position above the second assembled battery), and the thermistor position detection jig and the second assembled battery are viewed from above with the slide portion arranged at the second position. By doing so, it can be detected that the thermistor is present below the visible notch.

  As described above, by using the above-described thermistor position detection jig, the thermistor is arranged at a position where it cannot be visually recognized from the outside, and the number of batteries arranged in the arrangement direction is different. The position of the thermistor can be appropriately detected for each of the two types of assembled batteries (thus, the length in the row direction is different).

It is a top view schematic diagram of the 1st assembled battery concerning an embodiment. It is a top view schematic diagram of the 2nd assembled battery concerning an embodiment. It is sectional drawing of the battery which comprises a 1st assembled battery and a 2nd assembled battery. FIG. 3 is a partially enlarged schematic view of the BB cross section of FIG. 1 or the CC cross section of FIG. 2. It is a top view schematic diagram of the thermistor position detection jig concerning an embodiment. It is the other top view schematic diagram concerning the jig | tool for position detection of the thermistor. In embodiment, it is a top view schematic diagram in the state where the 1st assembled battery is arranged in the specified position below the thermistor position detection jig, and the slide part is arranged in the 1st position. In embodiment, it is a top view schematic diagram in the state where the 2nd assembled battery is arranged in the specified position below the thermistor position detection jig, and the slide part is arranged in the 2nd position. In another form, it is a top view schematic diagram in the state where the 1st assembled battery is arranged in the specified position below the thermistor position detection jig, and the slide part is arranged in the 1st position. In another form, it is the top view schematic diagram in the state where the 2nd assembled battery is arranged in the specified position below the thermistor position detection jig, and the slide part is arranged in the 2nd position.

(Embodiment)
Next, an embodiment of the present invention will be described. First, before describing the thermistor position detecting jig 70 according to the present embodiment, two types of assembled batteries (the first assembled battery 1 and the first assembled battery 1) to be detected by the thermistor position detecting jig 70 are used. The second assembled battery 201) will be described. FIG. 1 is a schematic top view of the first assembled battery 1 according to the embodiment. FIG. 2 is a schematic top view of the second assembled battery 201 according to the embodiment. FIG. 3 is a cross-sectional view of the battery 100 constituting the first assembled battery 1 and the second assembled battery 201. FIG. 4 is a partially enlarged schematic view of the BB cross section of FIG. 1 or the CC cross section of FIG.

  As shown in FIG. 1, the first assembled battery 1 includes a battery module 30 and a bus bar module 50. Among these, the battery module 30 includes a cooling plate interposed between a battery row 40 in which a plurality of batteries 100 are arranged in the row direction L (left-right direction in FIG. 1) and the batteries 100 adjacent in the row direction L. 20, two end plates (not shown in FIG. 1) for fixing them, a restraining rod (not shown in FIG. 1) for connecting the two end plates, and a resin frame (FIG. 1). (Not shown).

  The bus bar module 50 includes a plurality of bus bars 51, 52, connecting portions 53, 54, 55, 56 that connect the bus bars 51, 52 while being electrically insulated from each other, and connecting portions 53, 54, 55, 56. It has the connection parts 57 and 58 to connect (refer FIG. 1).

  Among these, the bus bar 51 is a member that connects the electrode external terminals (specifically, the positive electrode external terminal 130 and the negative electrode external terminal 140) of the batteries 100 adjacent in the row direction L (see FIG. 1). The bus bar 51 is made of a thin plate-shaped metal, and has a through hole (not shown) through which the bolt terminal portion 139 of the positive external terminal 130 is inserted, and a through hole (through which the bolt terminal portion 149 of the negative external terminal 140 is inserted. (Not shown).

  The bus bar 52 is a member connected to the positive external terminal 130 or the negative external terminal 140 of the battery 100 located at both ends of the battery array 40 in the arrangement direction L. The bus bar 52 is made of a thin metal plate and has a through hole (not shown) through which the bolt terminal portion 139 of the positive external terminal 130 is inserted, or a through hole through which the bolt terminal portion 149 of the negative external terminal 140 is inserted. (Not shown).

  In this bus bar module 50, on one side (upper side in FIG. 1) in the width direction W (up and down direction in FIG. 1) of the battery row 40, a plurality of bus bars 51 are arranged at intervals in the row direction L. A first bus bar row 50b is formed. Furthermore, on the other side (lower side in FIG. 1) of the battery row 40 in the width direction W, a second bus bar row 50c is formed in which a plurality of bus bars 51 and bus bars 52 are arranged at intervals in the row direction L. is doing.

  Furthermore, the bus bar module 50 has a thermistor 61, 62, 63, 64, and a thermistor holding portion 65 configured to extend in the row direction L and holding the thermistor 61, 62, 63, 64 (see FIG. 1). . The thermistor holding part 65 is connected to the connecting parts 54, 57 and 58. Each of the thermistors 61, 62, 63, 64 is in contact with the upper surface 100 b of the battery 100 selected from the plurality of batteries 100 constituting the battery array 40 and detects the temperature of the battery 100.

  Specifically, as shown by a broken line in FIG. 1, the thermistor 61 contacts the upper surface 100 b of the battery 100 positioned second from the reference end (the right end in FIG. 1) that is one end of the battery array 40. Thus, the temperature of the battery 100 is detected. The thermistor 62 is in contact with the upper surface 100b of the battery 100 located fifth from the reference end (right end in FIG. 1) of the battery row 40, and detects the temperature of the battery 100. The thermistor 63 is in contact with the upper surface 100b of the battery 100 located at the ninth position from the reference end (right end in FIG. 1) of the battery row 40, and detects the temperature of the battery 100. The thermistor 64 is in contact with the upper surface 100b of the battery 100 located 14th from the reference end (right end in FIG. 1) of the battery row 40, and detects the temperature of the battery 100.

  Moreover, the thermistor holding | maintenance part 65 has the bus bar module side lock part 65b, 65c, 65d, 65e, as shown in FIG.1 and FIG.4. The bus bar module side lock portions 65b, 65c, 65d, and 65e are fitted to battery module side lock portions 35b, 35c, 35d, and 35e provided in the battery module 30.

  FIG. 4 is a partially enlarged schematic view in the BB cross section of FIG. 1 and shows the configuration of the battery module side lock portion 35b, the bus bar module side lock portion 65b, and the thermistor 61. Also, other battery module side lock portions 35c, 35d, 35e, bus bar module side lock portions 65c, 65d, 65e, and thermistors 62, 63, 64 not shown in FIG. The bus bar module side lock portion 65b and the thermistor 61 have the same configuration.

  Further, as indicated by a broken line in FIG. 1, the battery module side lock portion 35 b is located above the battery 100 located second from the reference end (right end in FIG. 1) that is one end of the battery row 40. ing. Further, the battery module side lock portion 35c is located above the battery 100 located at the fifth position from the reference end (right end in FIG. 1) of the battery row 40. In addition, the battery module side lock portion 35d is located above the battery 100 located at the ninth position from the reference end (right end in FIG. 1) of the battery row 40. Moreover, the battery module side lock part 35e is located above the battery 100 located 14th from the reference | standard end (right end in FIG. 1) of the battery row | line 40. As shown in FIG.

  The bus bar module side lock portion 65b is provided at a position adjacent to the thermistor 61 in the width direction W of the battery 100 (vertical direction in FIG. 1 and horizontal direction in FIG. 4). By fitting the bus bar module-side lock portion 65b and the battery module-side lock portion 35b, the thermistor 61 is securely attached to the upper surface 100b of the battery 100 (the battery 100 located second from the reference end of the battery row 40). It will be in the state which touched.

  Further, the bus bar module side lock portion 65 c is provided at a position adjacent to the thermistor 62 in the width direction W of the battery 100. By fitting the bus bar module side lock portion 65c and the battery module side lock portion 35c, the thermistor 62 is securely attached to the upper surface 100b of the battery 100 (battery 100 located fifth from the reference end of the battery row 40). It will be in the state which touched.

  Further, the bus bar module side lock portion 65 d is provided at a position adjacent to the thermistor 63 in the width direction W of the battery 100. By fitting the bus bar module side lock portion 65d and the battery module side lock portion 35d, the thermistor 63 is surely attached to the upper surface 100b of the battery 100 (the battery 100 located ninth from the reference end of the battery row 40). It will be in the state which touched.

  Further, the bus bar module side lock portion 65 e is provided at a position adjacent to the thermistor 64 in the width direction W of the battery 100. By fitting the bus bar module side lock portion 65e and the battery module side lock portion 35e, the thermistor 64 is surely attached to the upper surface 100b of the battery 100 (battery 100 located at the 14th position from the reference end of the battery row 40). It will be in the state which touched.

  The battery 100 is a rectangular (rectangular cuboid) secondary battery, and as shown in FIG. 3, a flat wound electrode body 150 and a rectangular box-shaped battery case body 111 that houses the wound electrode body 150. A lid 113 that closes (seals) the opening 111d of the battery case body 111, a positive external terminal 130, and a negative external terminal 140. The battery case body 111 and the lid body 113 are joined together by welding all around to form the battery case 110. A safety valve 113j is formed on the lid 113.

  The wound electrode body 150 is a flat wound electrode body in which a sheet-like positive electrode 156 and a negative electrode 157 are wound through a sheet-like separator 158. The wound electrode body 150 is positioned at one end (left end in FIG. 3) in the axial direction (left and right in FIG. 3), and a positive wound portion 156b in which only a part of the positive electrode 156 overlaps spirally. The negative electrode winding portion 157b is located at the other end portion (right end portion in FIG. 3), and only a part of the negative electrode 157 overlaps in a spiral shape. A positive electrode connection member 135 that is electrically connected to the positive electrode external terminal 130 (external terminal main body portion 137) is welded to the positive electrode winding portion 156b. Further, a negative electrode connection member 145 that is electrically connected to the negative electrode external terminal 140 (external terminal main body portion 147) is welded to the negative electrode winding portion 157b.

  The positive external terminal 130 has an external terminal main body 137 having a substantially Z shape in side view and a bolt terminal 139. The external terminal main body portion 137 is made of a metal plate, and includes a first connection portion 137f connected to the positive electrode connection member 135 and a second connection portion 137g connected to the bus bar module 50 (the bus bar 51 or the bus bar 52). A through hole 137c is formed in the second connection portion 137g, and the shaft portion 139c of the bolt terminal portion 139 is inserted into the through hole 137c.

  The bolt terminal portion 139 is a metal bolt, and has a cylindrical shaft portion 139c having a male screw portion 139d, and a rectangular plate-shaped head portion located on the rear end side (lower end side in FIG. 3) of the shaft portion 139c. 139b. The bolt terminal portion 139 is disposed on the upper portion of the battery 100 (above the lid body 113) with the tip end side (the upper end side in FIG. 3) of the shaft portion 139c facing upward.

  The negative external terminal 140 includes an external terminal main body 147 and a bolt terminal 149 that are substantially Z-shaped in side view. The external terminal main body portion 147 is made of a metal plate, and includes a first connection portion 147f connected to the negative electrode connection member 145 and a second connection portion 147g connected to the bus bar module 50 (the bus bar 51 or the bus bar 52). A through hole 147c is formed in the second connection part 147g, and a shaft part 149c of the bolt terminal part 149 is inserted into the through hole 147c.

  The bolt terminal portion 149 is a metal bolt and has a columnar shaft portion 149c having a male screw portion 149d and a rectangular plate-shaped head portion located on the rear end side (lower end side in FIG. 3) of the shaft portion 149c. 149b. The bolt terminal portion 149 is disposed on the upper portion of the battery 100 (above the lid body 113) with the tip end side (the upper end side in FIG. 3) of the shaft portion 149c facing upward.

  Further, the battery 100 of this embodiment includes an insulating member 180 disposed on the lid 113. The insulating member 180 is interposed between the positive external terminal 130 (the external terminal main body portion 137 and the bolt terminal portion 139) and the upper surface of the lid 113, and electrically insulates both. The insulating member 180 is also interposed between the negative electrode external terminal 140 (the external terminal main body portion 147 and the bolt terminal portion 149) and the lid body 113.

  This insulating member 180 is interposed between the head arrangement portion 181 where the head portion 139b (149b) of the bolt terminal portion 139 (149) is arranged, and the external terminal main body portion 137 (147) and the lid body 113. An interposition part 183 is provided. On this interposition part 183, the 1st connection part 137f (147f) of the external terminal main-body part 137 (147) is arrange | positioned.

  The bolt terminal portion 139 (149) has its shaft portion 139c (149c) inserted through the through hole 137c (147c) of the second connection portion 137g (147g) of the external terminal main body portion 137 (147), and the head portion 139b ( 149b) is held by these in a manner sandwiched between the second connection portion 137g (147g) of the external terminal main body portion 137 (147) and the head arrangement portion 181 of the insulating member 180.

  In the present embodiment, in the batteries 100 that are adjacent to each other in the row direction L, the bolt terminal portions 139 of the positive external terminals 130 and the bolt terminal portions 149 of the negative external terminals 140 are adjacent to each other in the row direction L. The batteries 100 arranged in the placement direction L are alternately arranged in the width direction W (positions in the width direction W of the bolt terminal portions 139 of the positive external terminals 130 and the bolt terminal portions 149 of the negative external terminals 140). 40 is configured.

  In the first assembled battery 1 of the present embodiment, the through holes of the respective bus bars 51 constituting the first bus bar row 50b of the bus bar module 50 are arranged on one side in the width direction W of the battery row 40 (upper side in FIG. 1). The shaft portion 139c of the bolt terminal portion 139 of the positive electrode external terminal 130 arranged in the placement direction L is inserted, and the width direction W of the battery row 40 is inserted into the through hole of each bus bar 51 constituting the first bus bar row 50b. In the state where the shaft portion 149c of the bolt terminal portion 149 of the negative electrode external terminal 140 arranged in the row direction L on one side is inserted, each bus bar 51 constituting the first bus bar row 50b is connected to the battery row 40. On one side in the width direction W, the external terminal main body 137 of the positive external terminal 130 and the external terminal main body 147 of the negative external terminal 140 that are adjacent to each other in the row direction L are in contact.

  Further, the positive electrodes arranged in the row direction L on the other side in the width direction W of the battery row 40 (the lower side in FIG. 1) in the through holes of the respective bus bars 51 constituting the second bus bar row 50c of the bus bar module 50. The shaft portion 139c of the bolt terminal portion 139 of the external terminal 130 is inserted, and in the through hole of each bus bar 51 constituting the second bus bar row 50c, the row direction L on the other side in the width direction W of the battery row 40. In the state where the shaft portion 149c of the bolt terminal portion 149 of the negative electrode external terminal 140 arranged in parallel is inserted, each bus bar 51 constituting the second bus bar row 50c is arranged on the other side in the width direction W of the battery row 40. The external terminal main body 137 of the positive external terminal 130 and the external terminal main body 147 of the negative external terminal 140 that are adjacent to each other in the placement direction L are in contact.

  Then, the nut 5 is screwed into the male screw part 139d of the bolt terminal part 139 of the positive electrode external terminal 130 to fasten the external terminal body part 137 of the positive electrode external terminal 130 and the bus bar 51. The nut 5 is screwed into the male screw portion 149d of the bolt terminal portion 149, and the external terminal main body portion 147 of the negative electrode external terminal 140 and the bus bar 51 are fastened. In this way, the positive electrode external terminal 130 and the negative electrode external terminal 140 of the batteries 100 adjacent in the row direction L are connected through the bus bar 51. Thereby, all the batteries 100 which comprise the 1st assembled battery 1 are electrically connected in series.

  Moreover, the 2nd assembled battery 201 is provided with the battery module 230 and the bus bar module 250, as shown in FIG. Among these, the battery module 230 includes a cooling plate interposed between a battery row 240 in which a plurality of batteries 100 are arranged in the row direction L (left-right direction in FIG. 2) and the batteries 100 adjacent in the row direction L. 20, two end plates (not shown in FIG. 2) for fixing them, a restraining rod (not shown in FIG. 2) for connecting the two end plates, and a resin frame (FIG. 2). (Not shown).

  Compared with the battery module 30 of the first assembled battery 1, the battery module 230 of the second assembled battery 201 has a smaller number of batteries 100 arranged in the arrangement direction L (specifically, three fewer), The length in the row direction L is short. Accordingly, the bus bar module 250 of the second assembled battery 201 also has a smaller number of bus bars 51 and a shorter length in the row direction L than the bus bar module 50 of the first assembled battery 1.

  The bus bar module 250 connects a plurality of bus bars 51, 52, connecting portions 253, 254, 255, 256, and connecting portions 253, 254, 255, 256, which connect the bus bars 51, 52 while being electrically insulated from each other. And connecting portions 57 and 58. The bus bars 51 and 52 are equivalent to the bus bars 51 and 52 of the bus bar module 50 described above. In this bus bar module 250, on one side (upper side in FIG. 2) in the width direction W (up and down direction in FIG. 2) of the battery row 240, a plurality of bus bars 51 are arranged at intervals in the row direction L. A first bus bar row 250b is formed. Further, a second bus bar row 250c is formed in which a plurality of bus bars 51 and bus bars 52 are arranged at intervals in the row direction L on the other side of the battery row 240 in the width direction W (lower side in FIG. 2). is doing.

  Further, the bus bar module 250 includes thermistors 61, 62, 63, and 64 and a thermistor holding portion 265 that extends in the row direction L and holds the thermistors 61, 62, 63, and 64. The thermistor holding portion 265 is connected to the connecting portions 254, 57, and 58. The thermistors 61, 62, 63, and 64 are in contact with the upper surface 100 b of the battery 100 selected from the plurality of batteries 100 constituting the battery array 240 and detect the temperature of the battery 100. However, the second assembled battery 201 is partially different from the first assembled battery 1 in the battery 100 in which the thermistors 61, 62, 63, 64 are arranged.

  Specifically, the thermistor 61 is in contact with the upper surface 100b of the battery 100 located second from the reference end (the right end in FIG. 2), which is one end of the battery array 240, as in the first assembled battery 1. Thus, the temperature of the battery 100 is detected. Similar to the first assembled battery 1, the thermistor 62 contacts the upper surface 100b of the battery 100 that is located fifth from the reference end (right end in FIG. 2) of the battery row 240, and detects the temperature of the battery 100. To do. Unlike the first assembled battery 1, the thermistor 63 is in contact with the upper surface 100b of the battery 100 located at the eighth position from the reference end (right end in FIG. 2) of the battery row 240, and detects the temperature of the battery 100. . Unlike the first assembled battery 1, the thermistor 64 is in contact with the upper surface 100 b of the battery 100 that is located 11th from the reference end (left end in FIG. 2) of the battery row 240 and detects the temperature of the battery 100. .

  Moreover, the thermistor holding | maintenance part 265 has the bus bar module side lock part 265b, 265c, 265d, 265e, as shown in FIG.2 and FIG.4. The bus bar module side lock portions 265b, 265c, 265d, and 265e are fitted with battery module side lock portions 235b, 235c, 235d, and 235e provided in the battery module 230.

  4 is a partially enlarged schematic view in the CC section of FIG. 2 and shows the configuration of the battery module side lock portion 235b, the bus bar module side lock portion 265b, and the thermistor 61. FIG. Further, other battery module side lock portions 235c, 235d, 235e, bus bar module side lock portions 265c, 265d, 265e, and thermistors 62, 63, 64 not shown in FIG. The bus bar module side lock portion 265b and the thermistor 61 have the same configuration.

  Similarly to the first assembled battery 1, the battery module side lock portion 235 b is located above the battery 100 located second from the reference end (right end in FIG. 2) of the battery row 240. Similarly to the first assembled battery 1, the battery module side lock portion 235 c is located above the battery 100 located fifth from the reference end (right end in FIG. 2) of the battery row 240. Further, unlike the first assembled battery 1, the battery module side lock portion 235d is located above the battery 100 located at the eighth position from the reference end (right end in FIG. 2) of the battery row 240. Further, unlike the first assembled battery 1, the battery module side lock portion 235e is located above the battery 100 located at the eleventh position from the reference end (right end in FIG. 2) of the battery row 240.

  The bus bar module side lock portion 265b is provided at a position adjacent to the thermistor 61 in the width direction W of the battery 100 (vertical direction in FIG. 2 and horizontal direction in FIG. 4). Therefore, the bus bar module side lock portion 265b is located above the battery 100 located second from the reference end (the right end in FIG. 2) of the battery row 240, similarly to the first assembled battery 1. By fitting the bus bar module side lock portion 265b and the battery module side lock portion 235b, the thermistor 61 is securely attached to the upper surface 100b of the battery 100 (the battery 100 positioned second from the reference end of the battery row 240). It will be in the state which touched.

  Further, the bus bar module side lock portion 265 c is provided at a position adjacent to the thermistor 62 in the width direction W of the battery 100. Therefore, the bus bar module side lock portion 265c is located above the battery 100 located at the fifth position from the reference end (the right end in FIG. 2) of the battery row 240, similarly to the first assembled battery 1. By fitting the bus bar module side lock portion 265c and the battery module side lock portion 235c, the thermistor 62 is securely attached to the upper surface 100b of the battery 100 (the battery 100 located fifth from the reference end of the battery row 240). It will be in the state which touched.

  The bus bar module side lock portion 265 d is provided at a position adjacent to the thermistor 63 in the width direction W of the battery 100. Therefore, unlike the first assembled battery 1, the bus bar module side lock portion 265d is located above the battery 100 located at the eighth position from the reference end (right end in FIG. 2) of the battery row 240. By fitting the bus bar module side lock portion 265d and the battery module side lock portion 235d, the thermistor 63 is surely attached to the upper surface 100b of the battery 100 (the battery 100 located at the eighth position from the reference end of the battery row 240). It will be in the state which touched.

  Further, the bus bar module side lock portion 265 e is provided at a position adjacent to the thermistor 64 in the width direction W of the battery 100. Therefore, unlike the first assembled battery 1, the bus bar module side lock portion 265e is located above the battery 100 located at the eleventh position from the reference end (right end in FIG. 2) of the battery row 240. By fitting the bus bar module side lock part 265e and the battery module side lock part 235e, the thermistor 64 is surely attached to the upper surface 100b of the battery 100 (battery 100 located eleventh from the reference end of the battery row 240). It will be in the state which touched.

  By the way, in the 1st assembled battery 1 and the 2nd assembled battery 201 concerning this embodiment, the thermistor 61, 62, 63, 64 is arrange | positioned in the position which cannot be visually recognized from the outside. Further, the battery module side lock portions 35b, 35c, 35d, 35e, 235b, 235c, 235d, 235e and the bus bar module side lock portions 65b, 65c, 65d, 65e, 265b, 265c, 265d, 265e are also externally provided. It is placed at a position where it cannot be seen.

  Moreover, in the first assembled battery 1 and the second assembled battery 201, the thermistors 61, 62, 63, 64, battery module side lock portions 35b, 35c, 35d, 35e, 235b, 235c, 235d, 235e, and bus bar modules The positions of the side lock portions 65b, 65c, 65d, 65e, 265b, 265c, 265d, and 265e are partially different with reference to the reference end (the right end in FIGS. 1 and 2) that is one end of the battery rows 40 and 240. ing.

  However, it may be required to detect the positions of the thermistors 61, 62, 63, 64 for the two types of the first assembled battery 1 and the second assembled battery 201. For example, after the first assembled battery 1 and the second assembled battery 201 are manufactured in the assembly process, the positions of the thermistors 61, 62, 63, and 64 in the first assembled battery 1 and the second in the inspection process. There is a case where it is desired to detect (know) each position of the thermistors 61, 62, 63, 64 in the assembled battery 201.

  Specifically, in the first assembled battery 1, in order to confirm whether the thermistors 61, 62, 63, 64 are in contact with the upper surface 100 b of the battery 100, the thermistor holding of the bus bar module 50 is performed. There is a case where it is desired to inspect whether or not the portion of the portion 65 where the bus bar module side lock portions 65b, 65c, 65d, and 65e are arranged is pulled upward with a predetermined force and the portion is lifted upward.

  When the thermistors 61, 62, 63, and 64 are in contact with the upper surface 100b of the battery 100, the bus bar module side lock portions 65b, 65c, 65d, and 65e and the battery module side lock portions 35b, 35c, and 35d, respectively. , 35e are completely fitted to each other, the portion of the thermistor holding portion 65 of the bus bar module 50 where the bus bar module side lock portions 65b, 65c, 65d, 65e are arranged is pulled upward with a predetermined force. However, the part does not float upward (or only slightly lifts).

On the other hand, if any of the thermistors 61, 62, 63, 64 is not in contact with the upper surface 100b of the battery 100, the bus bar module side lock portion (the bus bar module side lock portion 65b, 65c, 65d, 65e) and the battery module side lock part (any one of the battery module side lock parts 35b, 35c, 35d, 35e) are not completely fitted, so the thermistor holding part 65 of the bus bar module 50 If the part where the bus bar module side lock part (one of the bus bar module side lock parts 65b, 65c, 65d, 65e) applied to the thermistor is pulled upward with a predetermined force, Compared with the case where it exists, the said site | part will float up greatly.
Furthermore, there is a case where the same inspection is desired for the second assembled battery 201.

  However, as described above, in the first assembled battery 1 and the second assembled battery 201, the thermistors 61, 62, 63, 64 are arranged at positions that are not visible from the outside. Further, the battery module side lock portions 35b, 35c, 35d, 35e, 235b, 235c, 235d, 235e and the bus bar module side lock portions 65b, 65c, 65d, 65e, 265b, 265c, 265d, 265e are also externally provided. It is placed at a position where it cannot be seen.

  Moreover, in the first assembled battery 1 and the second assembled battery 201, the thermistors 61, 62, 63, 64, battery module side lock portions 35b, 35c, 35d, 35e, 235b, 235c, 235d, 235e, and bus bar modules The positions of the side lock portions 65b, 65c, 65d, 65e, 265b, 265c, 265d, and 265e are partially different with reference to the reference end (the right end in FIGS. 1 and 2) that is one end of the battery rows 40 and 240. ing.

  Therefore, when performing the inspection as described above, first, for both the first assembled battery 1 and the second assembled battery 201, the positions of the thermistors 61, 62, 63, 64 (in the thermistor holding portion 65 of the bus bar module 50). It is necessary to detect the position in the row direction L). For the first assembled battery 1, by detecting the positions of the thermistors 61, 62, 63, 64 (positions in the row direction L in the thermistor holding part 65 of the bus bar module 50), the bus bar module side lock part 65b, 65c, 65d, 65e positions (positions in the row placement direction L in the thermistor holding portion 65 of the bus bar module 50) and battery module side lock portions 35b, 35c, 35d, 35e (positions in the row placement direction L) ) Is also detected. Further, by detecting the positions of the thermistors 61, 62, 63, 64 (positions in the row direction L in the thermistor holding part 265 of the bus bar module 250) for the second assembled battery 201, the bus bar module side lock part 265b, 265c, 265d, and 265e (positions in the row placement direction L in the thermistor holding portion 265 of the bus bar module 250) and battery module side lock portions 235b, 235c, 235d, and 235e (positions in the row placement direction L) ) Is also detected.

  For this reason, in the case of performing the inspection as described above, the positions of the thermistors 61, 62, 63, 64 (the thermistor holding portion 65 of the bus bar modules 50, 250) for both the first assembled battery 1 and the second assembled battery 201. , 265, a jig (thermistor position detection jig) capable of detecting the position in the row direction L) is required.

  On the other hand, in the present embodiment, the thermistors 61, 62, 63, and 64 are positioned for both the first assembled battery 1 and the second assembled battery 201 (the bus bar module 50, 250 positions of the thermistor holding portions 65 and 265 in the row direction L). Here, the thermistor position detecting jig 70 of the present embodiment will be described.

  As shown in FIGS. 5 and 6, the thermistor position detection jig 70 includes a plate-like jig main body 71 extending in the row direction L (the left-right direction in FIGS. 5 and 6), and the jig main body 71. And a slide mechanism 73 having a flat plate-like slide portion 74 provided to be slidable in the row direction L. Among these, the jig main body 71 has notches 71b, 71c, 71d, 71e, 71f indicating the positions of the thermistors 61, 62, 63, 64 (positions in the row direction L). The notches 71b, 71c, 71e, 71f have a width dimension (dimension in the row direction L) equivalent to the thickness of the battery 100 (dimension in the row direction L), and the notch 71d , Twice the width dimension (dimension in the row direction L).

  The slide mechanism 73 is fixed to the jig main body 71 in such a manner that the slide part 74 in which two long holes 75 and 76 that are long in the row direction L are formed and the long holes 75 and 76 are inserted. Pins 77 and 78 and a moving device (not shown) for moving the slide portion 74 in the row direction L (left and right direction in FIGS. 5 and 6) are provided. Further, the slide portion 74 includes a rectangular main body portion 74d extending in the row direction L (portion where the long holes 75 and 76 are formed) and a width direction W (in FIGS. 5 and 6) from the main body portion 74d. Projection portions 74b and 74c projecting to the other side (vertical direction in FIG. 5 and FIG. 6).

  The slide part 74 changes the position of the notch part which can be visually recognized when the thermistor position detection jig 70 is viewed from above by sliding in the row direction L between the first position and the second position. Here, FIG. 5 is a schematic top view of the thermistor position detection jig 70 and shows a state in which the slide portion 74 is arranged at the first position. The first position of the slide portion 74 is the position of the slide portion 74 when the left ends of the long holes 75 and 76 of the slide portion 74 are in contact (contact) with the positioning pins 77 and 78.

  As shown in FIG. 5, the notch portions that can be seen when the thermistor position detection jig 70 is viewed from the top with the slide portion 74 disposed at the first position are the notch portions 71 b, 71 c, and 71 d. Of the left half and 71f. The right half of the notch 71d is not visible when covered by the protrusion 74b of the slide 74, and the notch 71e is not visible when covered by the protrusion 74c of the slide 74.

  On the other hand, FIG. 6 is a schematic top view of the thermistor position detection jig 70 and shows a state in which the slide portion 74 is arranged at the second position. The second position of the slide portion 74 is the position of the slide portion 74 when the right ends of the long holes 75 and 76 of the slide portion 74 are in contact (contact) with the positioning pins 77 and 78.

  As shown in FIG. 6, the notch portions that can be seen when the thermistor position detection jig 70 is viewed from the top with the slide portion 74 disposed at the second position are the notch portions 71 b, 71 c, and 71 d. The right half of the left and 71e and 71f. The left half of the cutout portion 71d is covered with the protruding portion 74b of the slide portion 74 so that it cannot be visually recognized. On the other hand, the cutout portion 71e that could not be visually recognized in the state where the slide portion 74 is disposed at the first position can be viewed from above by the protrusion 74c of the slide portion 74 moving to the left side. .

  As described above, in the thermistor position detection jig 70 of the present embodiment, the thermistor position detection is performed when the slide portion 74 is disposed at the first position and when the slide portion 74 is disposed at the second position. The position of a notch (a portion indicating the position of the thermistor) that can be visually recognized when the jig 70 is viewed from above can be made different.

  More specifically, in the thermistor position detection jig 70 of the present embodiment, as shown in FIG. 7, the first assembled battery 1 is arranged at a specified position below the thermistor position detection jig 70 (in other words, For example, the thermistor position detecting jig 70 is disposed at a predetermined position above the first assembled battery 1) and the slide portion 74 is disposed at the first position. The left halves 71f of the notches 71b, 71c, 71d visible when the assembled battery 1 is viewed from above are the positions of the thermistors 61, 62, 63, 64 in the first assembled battery 1 (the thermistor holding part of the bus bar module 50). 65, the position in the row direction L).

  That is, the first assembled battery 1 is arranged at a specified position below the thermistor position detecting jig 70 (in other words, the thermistor position detecting jig 70 is arranged at a specified position above the first assembled battery 1). In addition, the left half of the notches 71b, 71c, 71d, 71f visible when the thermistor position detecting jig 70 and the first assembled battery 1 are viewed from above with the slide portion 74 disposed at the first position, 71f. Is the position of the thermistors 61, 62, 63, 64 in the first assembled battery 1 (position in the row direction L in the thermistor holding part 65 of the bus bar module 50).

  Therefore, when it is desired to detect the positions of the thermistors 61, 62, 63, 64 (positions in the row direction L in the thermistor holding portion 65 of the bus bar module 50) for the first assembled battery 1, the operator Is disposed at a specified position below the thermistor position detecting jig 70 (in other words, the thermistor position detecting jig 70 is disposed at a specified position above the first assembled battery 1), and the slide portion 74 is When the thermistor position detecting jig 70 and the first assembled battery 1 are viewed from above in the state of being arranged at the first position, the thermistor 61 is provided in the left half of the cutout portions 71b, 71c, 71d and below 71f. , 62, 63, 64 (further, bus bar module side lock portions 65b, 65c, 65d, 65e and battery module side lock portions 35b, 35c, 35d, 35e) That it Mashimashi can be detected.

  In the present embodiment, when the first assembled battery 1 is disposed at a specified position below the thermistor position detecting jig 70, the first assembled battery 1 is determined based on the length of the arranged assembled battery in the row direction L (the assembled battery). When the length in the row direction L is detected), it is determined that the assembled battery is the first assembled battery 1, and the slide mechanism 73 is driven so that the slide portion 74 is disposed at the first position. It is configured as follows. Therefore, in the present embodiment, when the first assembled battery 1 is disposed at a specified position below the thermistor position detection jig 70, the slide portion 74 is automatically disposed at the first position.

  Furthermore, in the thermistor position detection jig 70 of the present embodiment, as shown in FIG. 8, the second assembled battery 201 is disposed at a specified position below the thermistor position detection jig 70 (in other words, the thermistor position The thermistor position detecting jig 70 and the second assembled battery 201 are disposed in a state where the detecting jig 70 is disposed at a predetermined position above the second assembled battery 201) and the slide portion 74 is disposed at the second position. The right halves 71e of the notches 71b, 71c, 71d visible when viewed from above are the positions of the thermistors 61, 62, 63, 64 in the second assembled battery 201 (the arrangement in the thermistor holding part 265 of the bus bar module 250). (Position in the direction L). Note that the cutout portion 71f can also be seen in a top view, but since the battery 100, the bus bar module 250, and the like are not present below the cutout portion 71f, a thermistor is present below the cutout portion 71f. Obviously not.

  That is, as shown in FIG. 8, the second assembled battery 201 is disposed at a specified position below the thermistor position detecting jig 70 (in other words, the thermistor position detecting jig 70 is disposed above the second assembled battery 201. In the state where the thermistor position detecting jig 70 and the second assembled battery 201 are viewed from above with the slide portion 74 being located at the second position, the notches 71b and 71c are visible. , 71d, the right half of 71d, and the position of 71e are the positions of thermistors 61, 62, 63, 64 in the second assembled battery 201 (positions in the row direction L of the thermistor holding portion 265 of the bus bar module 250). Has been.

  Therefore, when it is desired to detect the positions of the thermistors 61, 62, 63, 64 (positions in the row direction L in the thermistor holding portion 265 of the bus bar module 250) for the second assembled battery 201, the operator Is disposed at a specified position below the thermistor position detecting jig 70 (in other words, the thermistor position detecting jig 70 is disposed at a specified position above the second assembled battery 201), and the slide portion 74 is When the thermistor position detection jig 70 and the second assembled battery 201 are viewed from above in the state of being disposed at the second position, the thermistor 61 is provided on the right half of the notches 71b, 71c, 71d and below the visible 71e. 62, 63, 64 (Furthermore, the bus bar module side lock portions 265b, 265c, 265d, 265e, and the battery module side lock portion 235 are provided. , It is possible to detect that 235c, 235d, 235e) are present.

  In the present embodiment, when the second assembled battery 201 is arranged at a specified position below the thermistor position detection jig 70, the second assembled battery 201 is arranged based on the length of the arranged assembled battery in the row direction L (the assembled battery). When the length in the row direction L is detected), it is determined that the assembled battery is the second assembled battery 201, and the slide mechanism 73 is driven so that the slide portion 74 is disposed at the second position. It is configured as follows. Therefore, in the present embodiment, when the second assembled battery 201 is disposed at a specified position below the thermistor position detection jig 70, the slide portion 74 is automatically disposed at the second position.

  Further, the first assembled battery 1 and the second assembled battery 201 are arranged such that the position of the battery 100 located at one end (the right end in FIGS. 7 and 8) of the battery rows 40 and 240 is relative to the thermistor position detection jig 70. The thermistor position detecting jig 70 is disposed at a specified position below the thermistor position detecting jig 70 so as to be in the same position. Therefore, in the present embodiment, the thermistors 61 in the first assembled battery 1 and the second assembled battery 201 are based on the position of the battery 100 located at one end (the right end in FIGS. 7 and 8) of the battery rows 40 and 240. Positions 62, 63, 64, etc. are detected.

Therefore, in the present embodiment, the thermistors 61, 62, 63, 64 contact the upper surface 100 b of the battery 100 in the first assembled battery 1 using the thermistor position detection jig 70 according to the following procedure. It is possible to check whether or not
First, as described above, the operator places the first assembled battery 1 at a specified position below the thermistor position detection jig 70, and the slide portion 74 of the thermistor position detection jig 70 is at the first position. It is set as the state (refer FIG. 7). When the thermistor position detection jig 70 and the first assembled battery 1 are viewed from above, the left halves 71f of the notches 71b, 71c, 71d can be visually recognized. As a result, the operator can insert the thermistors 61, 62, 63, 64 (and the bus bar module side lock portions 65b, 65c, 65d, 65e, and the lower half of the left half of the notches 71b, 71c, 71d, 71f, and The presence of the battery module side lock portions 35b, 35c, 35d, and 35e) can be detected.

  Next, the worker places a portion of the thermistor holding portion 65 of the bus bar module 50 located below the left half 71f of the notches 71b, 71c, 71d (ie, the thermistors 61, 62, 63). 64, and the bus bar module side lock portions 65b, 65c, 65d, 65e) are respectively pulled upward with a predetermined force using a pulling jig (not shown).

  At this time, when the thermistors 61, 62, 63, 64 are in contact with the upper surface 100b of the battery 100, the bus bar module side lock portions 65b, 65c, 65d, 65e and the battery module side lock portion 35b, Since 35c, 35d, and 35e are fitted (completely fitted), the thermistor holding portion 65 of the bus bar module 50 does not float upward (or slightly floats). Specifically, the upward lifting amount (height) is smaller than a preset threshold value.

  On the other hand, if any of the thermistors 61, 62, 63, 64 is not in contact with the upper surface 100b of the battery 100, the bus bar module side lock portion (the bus bar module side lock portion 65b, 65c, 65d, 65e) and the battery module side lock portion (any one of the battery module side lock portions 35b, 35c, 35d, 35e) are not fitted (completely fitted). Of the thermistor holding part 65, the part where the bus bar module side lock part (any of the bus bar module side lock parts 65b, 65c, 65d, 65e) related to the thermistor is arranged rises greatly upward. Specifically, the upward lifting amount (height) is equal to or greater than a preset threshold value.

  Therefore, the bus bar module side lock part and the battery module side lock part are fitted (completely fitted) with respect to the part where the upward lifting amount (height) is smaller than the threshold value, and the thermistor applied to the part is It can be determined that the battery 100 is in proper contact with the upper surface 100b of the battery 100. On the other hand, the bus bar module side lock part and the battery module side lock part are not fitted (completely fitted) to the part where the upward lifting height (height) is equal to or greater than the threshold value, and the thermistor applied to the part is not fitted. Therefore, it can be determined that the upper surface 100b of the battery 100 is not properly in contact.

Furthermore, in the present embodiment, the thermistors 61, 62, 63, and 64 are in contact with the upper surface 100b of the battery 100 in the second assembled battery 201 by the following procedure using the thermistor position detection jig 70, respectively. It is possible to check whether or not
First, as described above, the operator places the second assembled battery 201 at a specified position below the thermistor position detection jig 70, and the slide portion 74 of the thermistor position detection jig 70 is at the second position. It is set as the state (refer FIG. 8). When the thermistor position detection jig 70 and the second assembled battery 201 are viewed from above, the right halves 71e and 71f of the notches 71b, 71c, and 71d can be viewed.

  The operator can also visually recognize that the battery 100, the bus bar module 250, and the like are not present below the notch 71f. Therefore, the operator has the thermistors 61, 62, 63, 64 (further, the bus bar module side lock portions 265b, 265c, 265d, 265e) below the right half 71e of the notches 71b, 71c, 71d. Can be detected.

  Next, in the thermistor holding portion 265 of the bus bar module 250, the right half of the notches 71b, 71c, 71d that can be seen in a top view, a portion located below the 71e (that is, the thermistors 61, 62, 63, 64, and The portions where the bus bar module side lock portions 265b, 265c, 265d, 265e are disposed) are pulled upward with a predetermined force using a pulling jig (not shown).

  At this time, when the thermistors 61, 62, 63, 64 are in contact with the upper surface 100b of the battery 100, the bus bar module side lock portions 265b, 265c, 265d, 265e and the battery module side lock portion 235b, Since the 235c, 235d, and 235e are fitted (completely fitted), the thermistor holding portion 265 of the bus bar module 250 does not float upward (or slightly floats). Specifically, the upward lifting amount (height) is smaller than a preset threshold value.

  On the other hand, when any of the thermistors 61, 62, 63, 64 is not in contact with the upper surface 100b of the battery 100, the bus bar module side lock portion (the bus bar module side lock portion 265b, 265c, 265d, 265e) and the battery module side lock portion (any one of the battery module side lock portions 235b, 235c, 235d, 235e) are not fitted (completely fitted). Of the thermistor holding portion 265, a portion where the bus bar module side lock portion (any of the bus bar module side lock portions 265b, 265c, 265d, 265e) related to the thermistor is significantly raised. Specifically, the upward lifting amount (height) is equal to or greater than a preset threshold value.

  Therefore, the bus bar module side lock part and the battery module side lock part are fitted (completely fitted) with respect to the part where the upward lifting amount (height) is smaller than the threshold value, and the thermistor applied to the part is It can be determined that the battery 100 is in proper contact with the upper surface 100b of the battery 100. On the other hand, the bus bar module side lock part and the battery module side lock part are not fitted (completely fitted) to the part where the upward lifting height (height) is equal to or greater than the threshold value, and the thermistor applied to the part is not fitted. Therefore, it can be determined that the upper surface 100b of the battery 100 is not properly in contact.

  As described above, by using the thermistor position detection jig 70 of the present embodiment, the thermistor is an assembled battery arranged at a position where it cannot be visually recognized from the outside, and the batteries arranged in the row direction are arranged. The position of the thermistor can be detected appropriately for each of the two types of assembled batteries having different numbers (and therefore different lengths in the row direction). Furthermore, for each of the two types of assembled batteries, it is possible to detect whether or not the thermistor is in proper contact with the upper surface of the battery.

  In the above, the present invention has been described with reference to the embodiments. However, the present invention is not limited to the above embodiments, and it is needless to say that the present invention can be appropriately modified and applied without departing from the gist thereof.

  For example, in the embodiment, the thermistor position detection jig in which the number of notch parts visible when the thermistor position detection jig 70 is viewed from above with the slide portion 74 disposed at the first position is four. 70, the position of each thermistor is detected for the first assembled battery 1 having four thermistors 61, 62, 63, 64.

  However, as another form, for example, as shown in FIG. 9, the only difference is that the thermistor 62 does not exist as compared with the first assembled battery 1 (battery module side lock portion 35c and bus bar module side lock portion 65c. For the first assembled battery 301, the thermistor position detecting jig 70 of the embodiment may be used to detect the positions of the three thermistors and the positions of the four lock portions. In this case, as shown in FIG. 10, the second assembled battery is different from the second assembled battery 201 only in that only the thermistor 62 does not exist (battery module side lock portion 235c and bus bar module). With respect to the second assembled battery 401, the position of the three thermistors and the position of the four lock parts are detected using the thermistor position detection jig 70 of the embodiment.

  However, in the case of this embodiment, the notch portion 71c of the thermistor position detecting jig 70 does not indicate the position of the thermistor but indicates the position of the lock portion. That is, the thermistor position detecting jig of the present invention is not limited to the one in which all the notch portions provided in the thermistor position detecting jig indicate the thermistor position, but the notch portion indicating the thermistor position. (It is sufficient that at least one of the notch portions provided in the thermistor position detection jig is a notch portion indicating the position of the thermistor). For example, a thermistor position detection jig having a notch portion indicating the position of the thermistor and a notch portion other than the thermistor is also included.

  In this embodiment, for the first assembled battery 301 and the second assembled battery 401, the thermistor position detecting jig 70 is used to detect the positions of the three thermistors and the positions of the four lock portions in the same manner as in the embodiment. . In this embodiment, the operator knows that the notch portion 71c of the thermistor position detection jig 70 does not indicate the position of the thermistor but indicates the position of the lock portion.

  Specifically, as shown in FIG. 9, the operator places the first assembled battery 301 at a specified position below the thermistor position detection jig 70 and places the slide portion 74 at the first position. In the state, when the thermistor position detecting jig 70 and the first assembled battery 301 are viewed from above, the three notches 71b, 71f, the left half of the four notches 71b, 71c, 71d, 71f, It can be detected that the thermistors 61, 63, and 64 are present below the left half of 71d and 71f, and the bus bar module side is located below the left half and 71f of the four notches 71b, 71c, and 71d. It can be detected that the lock portions 65b, 65c, 65d, and 65e and the battery module side lock portions 35b, 35c, 35d, and 35e are present.

  Further, the operator places a portion of the thermistor holding portion 65 of the bus bar module 350 of the first assembled battery 301 that is located below the left half of the notches 71b, 71c, 71d and 71f that can be seen in a top view (ie, 71f). The parts where the thermistors 61, 63, 64 and the bus bar module side lock portions 65b, 65c, 65d, 65e are arranged) are pulled upward with a predetermined force using a pulling jig (not shown). Thus, as in the embodiment, it is possible to detect whether or not the bus bar module side lock portions 65b, 65c, 65d, 65e and the battery module side lock portions 35b, 35c, 35d, 35e are fitted, It is possible to detect whether or not the thermistors 61, 63, 64 are in proper contact with the upper surface of the battery 100.

  In addition, as shown in FIG. 10, the operator places the second assembled battery 401 at a specified position below the thermistor position detection jig 70 and places the slide portion 74 at the second position. When the thermistor position detection jig 70 and the second assembled battery 401 are viewed from above, the three notches 71b and 71d out of the right halves 71e and 71f of the five notches 71b, 71c and 71d visible. It can be detected that the thermistors 61, 63, 64 are present below the right half 71e, and the bus bar module side lock is provided below the right half 71e of the four notches 71b, 71c, 71d. It can be detected that the portions 265b, 265c, 265d, 265e and the battery module side lock portions 235b, 235c, 235d, 235e are present.

  Further, the operator places a portion of the thermistor holding portion 265 of the bus bar module 450 of the second assembled battery 401 located below the right half of the notches 71b, 71c, 71d (ie, the thermistors 61, 63). 64, and the bus bar module side lock portions 265b, 265c, 265d, and 265e) are respectively pulled upward with a predetermined force using a pulling jig (not shown). Similarly, it is possible to detect whether or not the bus bar module side lock portions 265b, 265c, 265d, 265e and the battery module side lock portions 235b, 235c, 235d, 235e are fitted, and the thermistors 61, 63, Detecting whether 64 is in proper contact with the upper surface of battery 100 Kill.

1,301 First assembled battery 201, 401 Second assembled battery 30, 230 Battery module 40, 240 Battery array 50, 250, 350, 450 Bus bar module 51, 52 Bus bar 61, 62, 63, 64 Thermistor 70 For detecting thermistor position Jig 71 Jig body parts 71b, 71c, 71d, 71e, 71f Notch part 73 Slide mechanism 74 Slide part 100 Battery 100b Upper surface 110 Battery case 130 Positive electrode external terminal (electrode external terminal)
140 Negative external terminal (electrode external terminal)
L Row direction W Width direction

Claims (1)

A battery module having a battery row in which a plurality of batteries are arranged in a row direction;
A plurality of bus bars connecting electrode external terminals of the batteries adjacent to each other in the row direction, and at least one of the plurality of batteries constituting the battery row in contact with the upper surface of the battery, and the temperature of the battery A thermistor for detecting a thermistor, wherein the thermistor detects the position of the thermistor with respect to the assembled battery disposed at a position where the thermistor is not visible from the outside of the assembled battery. A position detection jig,
The thermistor position detection jig is
Two types of the assembled batteries having different numbers of the batteries arranged in the row direction, wherein the number of the batteries arranged in the row direction is relatively large, and the length in the row direction A first assembled battery having a relatively long length, and a second assembled battery having a relatively small number of the batteries arranged in the row direction and a relatively short length in the row direction. , A jig for detecting the position of the thermistor,
The thermistor position detection jig is
A jig main body having a shape extending in the row direction, the jig main body having a notch indicating the position of the thermistor;
A thermistor position detecting unit that is slidable in the row direction with respect to the jig body, and slides between the first position and the second position in the row direction. A slide part that changes the position of the notch part that can be seen when the jig is viewed from above,
The thermistor position detecting jig and the first set are arranged in a state where the first assembled battery is arranged at a specified position below the thermistor position detecting jig and the slide portion is arranged at the first position. The notch portion visible when the battery is viewed from above is configured to indicate the position of the thermistor in the first assembled battery,
The thermistor position detecting jig and the second set are arranged in a state where the second assembled battery is arranged at a specified position below the thermistor position detecting jig and the slide portion is arranged at the second position. A thermistor position detection jig configured such that the notch portion visible when the battery is viewed from above indicates the position of the thermistor in the second assembled battery.

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