JP2015164767A - Resin plate molding die, bus bar module, and method for manufacturing bus bar module - Google Patents

Abstract

Resin plate molding metal capable of flexibly responding to increase / decrease in the number of batteries and having an irregularly shaped portion in the middle of the resin plate as required Provide the mold. A resin plate molding die 8 includes a first divided resin plate molding portion 13 and a second divided resin plate molding portion 14 for molding a resin plate 2 into a two-divided state in the middle of the battery arrangement direction. A mold that is provided in the mold body 11 and that is configured such that at least one of the first divided resin plate molding portion 13 and the second divided resin plate molding portion 14 can be changed in length by using the insert 15. It is a type. The resin plate 2 molded by using the resin plate molding die 8 has a plurality of bus bar fixing portions 43. When the bus bar 3 is individually accommodated and fixed to the bus bar fixing portion 43, the bus bar module 1 is assembled. The bus bar module 1 is attached to the battery assembly 31. The adjacent batteries 32 of the battery assembly 31 are connected in series by the bus bar module 1. [Selection] Figure 1

Description

  The present invention relates to a mold for molding a resin plate constituting a bus bar module, a bus bar module attached to a battery assembly, and a method for manufacturing the bus bar module.

  Regarding a mold for molding a resin plate constituting a bus bar module, a technique disclosed in the following Patent Document 1 by the applicant of the present application is known. First, the background to the invention of the following Patent Document 1 will be briefly described, and then the invention of the following Patent Document 1 will be described. The drawings refer to those of the following Patent Document 1 and are not attached to this specification.

  In FIG. 10 of Patent Document 1 below, bus bar modules 54 and 55 (battery connection plates) are provided to connect the electrodes 52 and 53 of the plurality of batteries 51 in the battery assembly 50 (battery assembly) in series. The plurality of batteries 51 are fastened and fixed by a belt 56. The bus bar module 54 on the front side in the figure is configured as follows. That is, as shown in FIG. 11, the resin plate 57, the bus bar 58 with one hole, and the bus bar 59 with two holes are configured. The bus bar 58 with one hole is attached to both ends of the resin plate 57, and a plurality of bus bars 59 with two holes are attached in the middle of the resin plate 57. The bus bar 58 with one hole and the bus bar 59 with two holes are attached in a state of being aligned in a horizontal row on the resin plate 57. As shown in FIG. 12, the rear bus bar module 55 in FIG. 10 includes a resin plate 57 'and a plurality of bus bars 59 with two holes. A plurality of bus bars 59 with two holes are attached in a state of being aligned in a horizontal row on the resin plate 57 '. The resin plates 57 and 57 'are respectively molded by a dedicated die so as to correspond to the size of the battery assembly 50, that is, the length of the battery 51 having the electrode pitch A (see FIG. 10). . Two dedicated molds are required for the resin plates 57 and 57 '.

  By the way, it can be said that the bus bar module is useful if it can flexibly cope with the increase or decrease of the number of batteries. Therefore, the following method is adopted. In FIG. 14, reference numeral 70 indicates a first molding die. Further, in FIG. 15, reference numeral 73 denotes a second molding die. In the first molding die 70, the sub resin plate 71 is resin molded. In the second molding die 73, the sub resin plate 74 is resin-molded. After resin molding of the sub-resin plates 71 and 74, the position is selected from 1 to 6 in FIG. 15 so as to match the size of the battery assembly, and is manually separated into necessary parts and other parts. (See FIG. 16) A method is employed in which only a necessary portion is arranged beside the sub resin plate 71 as shown in FIG. 17 to obtain a resin plate 75 having a desired length.

  However, the above method has the following problems. That is, since two molds (the first molding mold 70 and the second molding mold 73) are required, depreciation costs increase, and since manual separation is required, personnel costs are increased. However, there is a problem that the increase in cost is unavoidable. Therefore, the invention of the following Patent Document 1 has been made for the purpose of reducing costs and eliminating waste.

  In FIG. 2 of the following Patent Document 1, reference numeral 1 indicates a mold 1 for forming a resin plate 7, and the mold 1 is configured to include a fixed-shaped partial molding portion 5 and an additional partial molding portion 6. The The additional partial molding portion 6 has a nested mold structure, and the resin plate 7 having a desired length can be obtained in a single state by exchanging only this portion. Therefore, the above object can be achieved.

JP 2004-98295 A

  In the above prior art, an irregularly shaped portion (for example, an external device connecting portion having a function like a terminal block or a connector housing and having the resin portion formed in a case shape) is provided in the middle of the resin plate 7. When it is necessary to provide the mold 1, the configuration and structure of the mold 1 may not be able to cope with it. If it is not possible to cope with the problem, it is conceivable to externally connect the external device connecting part with a separate mold and attach the resin-molded part later. However, it cannot be said that retrofitting of the external device connection portion is an effective plan.

  The present invention has been made in view of the above circumstances, and can flexibly cope with increase / decrease in the number of batteries, and irregularly in the middle of the resin plate as necessary. It is an object of the present invention to provide a resin plate molding die that can be provided with a shape portion. It is another object of the present invention to provide a bus bar module including a resin plate obtained by the mold and a method for manufacturing the bus bar module.

  In order to solve the above-mentioned problem, the present invention according to claim 1 is formed in a shape extending in the battery arrangement direction, and a plurality of bus bars for connecting the adjacent batteries in series in a battery assembly made up of a plurality of batteries. And a resin plate formed in a shape having a plurality of bus bar fixing portions for individually accommodating and fixing the plurality of bus bars, and a molding die for resin molding the resin plate. A first divided resin plate molding part and a second divided resin plate molding part for forming a plate into a two-divided state in the middle of the battery arrangement direction are provided in the mold body, and at least the first divided resin plate molding part and Any one of the second divided resin plate molding portions is configured to be capable of changing the length of the molded product in the battery arrangement direction using a nesting. To.

  According to a second aspect of the present invention, in the resin plate molding die according to the first aspect, as the resin plate, a resin plate main body on which the plurality of bus bar fixing portions are formed, and a hinge with respect to the resin plate main body And the external device mounting portion projecting in a direction orthogonal to the battery arrangement direction, and in the two-divided state according to the position of the external device mounting portion. One divided resin plate molding portion and the second divided resin plate molding portion are formed.

  According to a third aspect of the present invention, in the resin plate molding die according to the second aspect, the first divided resin plate main body and the second divided resin formed in the two-divided state as the resin plate main body. As having a plate body, a first connection lock portion and a second connection lock portion formed in the first divided resin plate main body and the second divided resin plate main body to connect them, The first divided resin plate molding part and the second divided resin plate molding part are formed.

  According to a fourth aspect of the present invention, there is provided the resin plate molding die according to the second or third aspect, wherein the first divided resin plate molding section and the second split resin plate molding section are arranged so that two of the resin plates are taken or taken together. A second divided resin plate molding part is formed.

  Moreover, the bus-bar module of this invention of Claim 5 made | formed in order to solve the said subject is a resin plate formed using the resin plate molding die of Claim 1, 2, 3 or 4 And a plurality of bus bars individually accommodated and fixed to a plurality of bus bar fixing portions formed on the resin plate.

  According to a sixth aspect of the present invention, in the bus bar module according to the fifth aspect, as the resin plate, a resin plate main body on which the plurality of bus bar fixing portions are formed, and the resin plate main body via a hinge In the state where the bus bar module is attached to one side surface of a battery assembly including a plurality of batteries, the external device attachment part is bent by the hinge and changes the protruding direction. It is characterized by being used.

  Furthermore, in order to solve the above-mentioned problem, the bus bar module manufacturing method according to the present invention described in claim 7 uses a resin plate molding die according to claim 1, 2, 3 or 4 to replace the resin plate. A plurality of bus bars are individually accommodated and fixed to a plurality of bus bar fixing portions formed on the resin plate, and a first step of forming the divided state, a second step of connecting the two divided states to form the resin plate, and And a third step.

  According to the first aspect of the present invention, in order to mold the resin plate into two divided states in the middle of the battery arrangement direction, the first divided resin plate molded portion and the second divided resin plate molded portion are formed as a mold. Because it is a mold configured to change the length of the molded product using a nesting, at least one of the first divided resin plate molding part and the second divided resin plate molding part, provided in the main body, There is an effect that the length of the resin plate can be flexibly changed by increasing / decreasing the nesting with respect to the increase / decrease of the number of batteries. Thereby, even if the number of batteries increases or decreases, it is not necessary to newly install the entire mold, and as a result, there is an effect that cost increase can be suppressed. In addition, according to the present invention, since the resin plate is a mold that is formed in a two-divided state in the middle of the battery arrangement direction, irregularities are formed in the middle of the resin plate by using such a divided portion in the mold. There is also an effect that a simple shape portion can be easily provided.

  According to the second aspect of the present invention, since the first divided resin plate molding portion and the second divided resin plate molding portion are formed in consideration of the position to be divided into two, the external device mounting portion is provided in the middle. There is an effect that it is possible to facilitate the provision of the resin plate provided.

  According to the third aspect of the present invention, the first divided resin plate forming portion and the second divided resin plate molding portion and the second divided resin plate main body in consideration of the connection of the first divided resin plate main body and the second divided resin plate main body in the two-divided state. Since the divided resin plate molding portion is formed, for example, there is an effect that it is possible to easily make two resin parts into one resin plate in order to improve convenience at the time of delivery.

  According to the fourth aspect of the present invention, two resin plates can be taken or taken together by the structure of the first divided resin plate molding portion and the second divided resin plate molding portion. Play. In the case of taking two pieces with the configuration and structure of the present invention, it is excellent in mass productivity, and in the case of taking together, it is possible to reduce the projected area of the mold as described later in the column of the embodiment as well as mass production. There is an effect.

  According to the fifth aspect of the present invention, there is an effect that it is possible to provide a bus bar module that can flexibly change the length of the resin plate with respect to the increase or decrease of the number of batteries.

  According to the present invention described in claim 6, for example, even when the bus bar module is attached to one side surface of the battery assembly, for example, the connection work from the upper side of the battery assembly toward the external device mounting portion is enabled. There is an effect that can be.

  According to the present invention described in claim 7, there is an effect that it is possible to manufacture a bus bar module in which the length of the resin plate can be flexibly changed with respect to increase or decrease of the number of batteries.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which concerns on the bus-bar module and resin plate molding die of this invention, (a) is a front view of a bus-bar module, (b) is a front view of a left side divided resin plate, (c) is a front view of a right side divided resin plate. , (D) is a front view (schematic diagram) of the resin plate molding die, and (e) is a right side view (schematic diagram) of the resin plate molding die. It is explanatory drawing of the shaping | molding part in the resin plate shaping die of FIG.1 (d). In the resin plate molding die of FIG. 1 (d), an example of co-processing in resin molding of the left divided resin plate and the right divided resin plate at the first divided resin plate molded portion and the second divided resin plate molded portion. It is explanatory drawing shown. An example in which the left divided resin plate and the right divided resin plate are resin-molded in the first divided resin plate molding portion and the second divided resin plate molding portion in the resin plate molding die in FIG. It is explanatory drawing which shows. It is a perspective view which shows the state just before attaching the bus-bar module of this invention to one side of a battery assembly. FIG. 6 is a perspective view of the bus bar module of FIG. 5. It is a front view of the bus-bar module of FIG. It is a perspective view of the left side divided resin plate which comprises the resin plate in the bus-bar module of FIGS. It is a perspective view at the time of raising an external apparatus attachment part from the state of FIG. It is a perspective view of the right side division | segmentation resin plate which comprises the resin plate in the bus-bar module of FIGS. It is a perspective view of the bus bar which comprises the bus-bar module of FIGS. FIG. 10 is a perspective view when the bus bar and the like of FIG. 11 are fixed to the left divided resin plate in the state of FIG. 9. It is a perspective view at the time of fixing the bus-bar etc. of FIG. 11 to the right side division | segmentation resin plate of the state of FIG. It is a perspective view at the time of closing the cover of an external apparatus attachment part and the cover of an electric wire attachment part from the state of FIG. It is a perspective view at the time of closing the cover of an electric wire attachment part from the state of FIG. It is the perspective view which looked at the bus-bar module of FIG. 6 from the back side. It is an enlarged view of the circle P part of FIG.

  The resin plate molding die is provided with a first divided resin plate molding portion and a second divided resin plate molding portion in the mold body in order to mold the resin plate into two divided states in the middle of the battery arrangement direction, It is the metal mold | die comprised so that either one of the 1st division | segmentation resin plate shaping | molding part and the 2nd division | segmentation resin plate shaping | molding part can change a molded product length using a nest | insert.

  A resin plate resin-molded using a resin plate-molding die has a plurality of bus bar fixing portions. When the bus bars are individually accommodated and fixed to the bus bar fixing portion, the bus bar module is assembled. The bus bar module is attached to the battery assembly. Adjacent batteries in the battery assembly are connected in series by the bus bar module.

  Hereinafter, embodiments will be described with reference to the drawings. FIG. 1 is a view relating to a bus bar module and a resin plate molding die of the present invention, (a) is a front view of the bus bar module, (b) is a front view of the left divided resin plate, and (c) is a right divided resin plate. (D) is a front view (schematic diagram) of the resin plate molding die, and (e) is a right side view (schematic diagram) of the resin plate molding die. FIG. 2 is an explanatory view of a molding part in the resin plate molding die of FIG.

  In FIG. 1A, reference numeral 1 indicates a bus bar module of the present invention. The bus bar module 1 includes an insulating resin plate 2 and a plurality of conductive bus bars 3. Such a bus bar module 1 has external device attachment means 4 and two electric wire connection means 5. The external device attachment means 4 is disposed at an intermediate position of the bus bar module 1. Moreover, the two electric wire connection means 5 are arrange | positioned in the both-ends position of the bus-bar module 1 (The detailed structure and structure of the bus-bar module 1 are mentioned later, referring FIGS. 5-17).

  The resin plate 2 is formed in a two-part configuration such that it is divided into two at the position indicated by the dividing line DL (such as being divided into two in accordance with the position of the external device mounting means 4). That is, the resin plate 2 includes a left divided resin plate 6 shown in FIG. 1B and a right divided resin plate 7 shown in FIG. 1C. The resin plate 2 is formed by connecting the left divided resin plate 6 and the right divided resin plate 7. Both the left divided resin plate 6 and the right divided resin plate 7 are resin molded products.

  The left divided resin plate 6 and the right divided resin plate 7 constituting the resin plate 2 are resin-molded by a single resin plate molding die 8. In addition, illustration of each component part of the resin molding apparatus other than the resin plate molding die 8 is omitted here. The left divided resin plate 6 and the right divided resin plate 7 are resin-molded in different states.

  1D and FIG. 1E, the resin plate molding die 8 includes a die body 11 including a fixed side die 9 and a movable side die 10. The mold main body 11 is provided with two molding parts 12 and 12 (the number of molding parts 12 is an example. One or three or more may be used. Incidentally, gates, ejector pins, etc. are publicly known. (The illustration is omitted).

  1D, 1E, and 2, each molded part 12 is provided with a first divided resin plate molded part 13 and a second divided resin plate molded part 14. In the present embodiment, the first divided resin plate molding portion 13 is provided as a portion for molding the left divided resin plate 6. The second divided resin plate molding part 14 is provided as a part for molding the right divided resin plate 7. The 2nd division | segmentation resin plate shaping | molding part 14 is comprised including the nest | insert 15 for enabling the length of the right side division | segmentation resin plate 7 to be changeable with a some pattern.

  In FIG. 2, a plurality of types of nestings 15 are prepared although not particularly shown. When the long right divided resin plate 7 is required for molding, a nesting 15 in which a cavity (a space in which molten resin flows and a resin part is molded) is carved is used. On the other hand, when molding is performed by requiring a short right divided resin plate 7, a nest 15 without a cavity is used. That is, the insert 15 having a structure that prevents the molten resin from flowing is used. In the former case, the long right divided resin plate 7 can be molded as shown in FIG. 2B, and in the latter case, the short right divided resin plate 7 can be molded as shown in FIG. 2C. become. The length of the right divided resin plate 7 (the type of the insert 15) is appropriately set according to the number of batteries 32 (see FIG. 5) described later.

  Each molding part 12 is formed in a layout in which the left divided resin plate 6 and the right divided resin plate 7 are formed by co-molding as shown in FIG. 3, or the left divided resin plate 6 and the right divided resin plate 6 as shown in FIG. For example, the resin plate 7 may be formed in a layout in which two resin plates 7 are formed.

  The left divided resin plate 6 has a portion (external device mounting portion 37 described later) corresponding to the external device mounting means 4 (see FIG. 1). Usually, when the said part is resin-molded, the part used as a yield will arise in a metal mold | die. However, by adopting a shared layout as shown in FIG. 3, even if there is a portion corresponding to the external device mounting means 4 (external device mounting portion 37), the dead space is minimized and the yield is improved. There is an advantage that the projected area indicated by dimension H × dimension V can be made smaller than the projected area (area of dimension H × dimension V ′) in the case of a two-piece layout. The shared layout has the advantage that the increase in size of the mold and the increase in cost can be suppressed.

  Although depending on the shape of the resin plate 2, if a plurality of resin plates 2 are molded, it is effective to use a co-up layout as shown in FIG. 3.

  In the present embodiment, since there is a portion (external device mounting portion 37 described later) corresponding to the external device mounting means 4 (see FIG. 1), the first split resin plate molding portion 13 for molding the left split resin plate 6 is provided. Although the length is not changed without providing the insert 15, the length may be changed as in the second divided resin plate molding portion 14 if the external device attachment portion 37 is not provided.

  Next, a detailed configuration and structure of the bus bar module 1 and a manufacturing method will be described with reference to FIGS. In the figure, the arrow Y indicates the upper side (up and down direction), the arrow X indicates the right side (left and right direction), and the arrow Z indicates the front side (front and rear direction).

  5 is a perspective view showing a state immediately before the bus bar module of the present invention is attached to one side surface of the battery assembly, FIG. 6 is a perspective view of the bus bar module of FIG. 5, and FIG. 7 is a front view of the bus bar module of FIG. 8 is a perspective view of the left divided resin plate constituting the resin plate in the bus bar module of FIGS. 5 to 7, FIG. 9 is a perspective view when the external device mounting portion is raised from the state of FIG. 8, and FIG. 7 is a perspective view of the right divided resin plate constituting the resin plate in the bus bar module of FIG. 7, FIG. 11 is a perspective view of the bus bar constituting the bus bar module of FIGS. 5 to 7, and FIG. 12 is the left divided resin plate in the state of FIG. 11 is a perspective view when the bus bar of FIG. 11 is fixed, FIG. 13 is a perspective view when the bus bar of FIG. 11 is fixed to the right divided resin plate in the state of FIG. 10, and FIG. 15 is a perspective view when the cover of the external device mounting portion and the cover of the electric wire mounting portion are closed from the state, FIG. 15 is a perspective view when the cover of the electric wire mounting portion is closed from the state of FIG. The perspective view which looked at the module from the back side, FIG. 17 is the enlarged view of the circle P part of FIG.

  In FIG. 5, the bus bar module 1 is attached to, for example, one side surface S of the battery assembly 31 (not only the one side surface S but also the upper surface). The battery assembly 31 is a high-voltage battery mounted at a predetermined position of a hybrid vehicle or an electric vehicle, and is formed by arranging a plurality of batteries 32. Each battery 32 is provided with electrodes 33 and 34 used as a positive electrode and a negative electrode. The electrodes 33 and 34 are provided on one side of the battery at a predetermined interval. The battery assembly 31 is arranged so that the electrodes 33 and 34 facing each other between adjacent batteries 32 become a plus electrode and a minus electrode. The battery assembly 31 has various forms, and one shown in the figure is one.

  5 to 7, the bus bar module 1 includes an insulating resin plate 2 and a plurality of conductive bus bars 3. At an intermediate position of the bus bar module 1, external device mounting means 4 (irregular shape portion) is provided. In addition, electric wire connecting means 5 and 5 are provided at both end positions of the bus bar module 1, respectively. The external device attachment means 4 is an electrical connection portion with an external device (not shown), and is formed in a state where terminals can be fastened from above the battery assembly 31. On the other hand, the electric wire connecting means 5 and 5 can be electrically connected to a positive electrode power cable (high voltage resistant electric wire, not shown) and a negative electrode power cable (high voltage resistant electric wire, not shown). It is formed in the state.

  The resin plate 2 is formed by injection molding using an insulating resin material. Further, the resin plate 2 has a two-part configuration that is divided into two parts in accordance with the position of the external device mounting means 4. When the resin plate 2 is connected from the two-divided state and becomes an integrated state, the resin plate 2 becomes a long one corresponding to the number of the batteries 32. The resin plate 2 is formed so that efficient connection of the plurality of bus bars 3 to the battery assembly 31 can be performed.

  The resin plate 2 is a resin molded product, and includes a left divided resin plate 6 that is a left portion when viewed from the front, and a right divided resin plate 7 that is a right portion when viewed from the front.

  In FIG. 8, the left divided resin plate 6 includes a left divided resin plate main body 35 (resin plate main body), an external device mounting portion 37 coupled to the left divided resin plate main body 35 via a hinge 36, and a left side. The split resin plate main body 35 is formed in the shape shown in the figure with an electric wire connecting portion 38 arranged and formed at the left end.

  The left divided resin plate main body 35 includes an upper bus bar fixing portion group 39, a lower bus bar fixing portion group 40, a plurality of bridge portions 41 connecting them, and a first connection lock portion 42 (first connection lock). Part). A plurality of bus bar fixing portions 43 are formed in the upper bus bar fixing portion group 39 and the lower bus bar fixing portion group 40, respectively. The bus bar fixing portion 43 is formed as a portion for receiving and fixing the bus bar 3. The bus bar fixing portion 43 is formed in a substantially rectangular frame shape when viewed from the front.

  A receiving portion 44 for placing the bus bar 3 is formed at the center position of the bottom portion of the bus bar fixing portion 43. The receiving part 44 is formed in a bridge shape. The bus bar fixing portion 43 is formed with a pair of fixing portions 45 and 45 for fixing the bus bar 3 in accordance with the position of the receiving portion 44. The fixing portions 45, 45 are formed in a shape that can prevent the bus bar 3 from coming off. In addition, a positioning portion 46 for positioning the bus bar 3 is formed on each side of each of the fixing portions 45, 45. A total of four positioning portions 46 are formed. The bus bar fixing portions 43 are arranged and formed in a row in the battery arrangement direction (the direction in which the batteries 32 of the battery assembly 31 are arranged and coincides with the arrow X direction). By arranging the bus bar fixing portions 43 in a line, an upper bus bar fixing portion group 39 and a lower bus bar fixing portion group 40 are formed.

  The first connection lock portion 42 is formed as a portion that is connected to the right divided resin plate 7. In the present embodiment, the first connection lock portion 42 is formed in a known locking projection shape. The first connection lock portion 42 is arranged and formed in accordance with the positions of the upper-stage bus bar fixing portion group 39 and the lower-stage bus bar fixing portion group 40.

  The external device mounting portion 37 is disposed and formed on the lower right side of the left divided resin plate main body 35. This right end position corresponds to the position of a dividing line DL (see FIG. 1) that divides the resin plate 2 into two. That is, the external device mounting portion 37 is arranged and formed in accordance with the connection position with the right divided resin plate 7. The external device mounting portion 37 includes a terminal case portion 47 and terminal cover portions 49 and 50 that are coupled to the terminal case portion 47 via a hinge 48. The terminal case portion 47 and the terminal cover portions 49 and 50 are formed with lock portions (reference numerals omitted) for closing the terminal cover portions 49 and 50, respectively.

  The external device mounting portion 37 is formed so as to protrude downward from the left divided resin plate body 35 in a state immediately after resin molding. As will be described later, when functioning as the external device mounting means 4, the protruding direction is changed to a state where it is raised 90 degrees (see FIG. 9).

  The electric wire connecting portion 38 is arranged and formed in accordance with the position of the bus bar fixing portion group 40 on the lower left side and the lower side of the left divided resin plate main body 35. The wire connecting portion 38 includes a wire terminal receiving portion 51 and a cover portion 53 that is coupled to the wire terminal receiving portion 51 via a hinge 52. The wire terminal receiving part 51 and the cover part 53 are each formed with a lock part (reference numeral omitted) for closing the cover part 53.

  In FIG. 10, the right divided resin plate 7 includes a right divided resin plate main body 54 (resin plate main body) and a wire connecting portion 55 that is disposed and formed at the right end of the right divided resin plate main body 54.

  The right divided resin plate main body 54 includes an upper bus bar fixing portion group 56, a lower bus bar fixing portion group 57, a plurality of bridge portions 58 connecting them, and a second connection lock portion 59 (second connection lock). Part). A plurality of bus bar fixing portions 43 (which are the same as the bus bar fixing portion 43 of the left divided resin plate main body 35) are formed in the upper bus bar fixing portion group 56 and the lower bus bar fixing portion group 57, respectively. The bus bar fixing portions 43 are arranged and formed in a row in the battery arrangement direction (the direction in which the batteries 32 of the battery assembly 31 are arranged and coincides with the arrow X direction). By arranging the bus bar fixing portions 43 in a line, an upper-stage bus bar fixing portion group 56 and a lower-stage bus bar fixing portion group 57 are formed.

  The second connection lock portion 59 is formed as a portion that connects to the left divided resin plate 6. In the present embodiment, the second connection lock portion 59 is formed in a known locking frame shape that is substantially U-shaped. The second connection lock portion 59 is arranged and formed in accordance with the positions of the upper-stage bus bar fixing portion group 56 and the lower-stage bus bar fixing portion group 57.

  The electric wire connecting portion 55 is disposed and formed in accordance with the position of the bus bar fixing portion group 57 on the lower right side and the lower side of the right divided resin plate main body 54. The wire connecting portion 55 includes a wire terminal receiving portion 60 and a cover portion 62 that is coupled to the wire terminal receiving portion 60 via a hinge 61. The electric wire terminal receiving part 60 and the cover part 62 are each formed with a lock part (reference numeral omitted) for closing the cover part 62.

  In FIG. 11, the bus bar 3 is formed by pressing a conductive metal plate. In this embodiment, it is formed into a substantially rectangular plate part with four corners cut off as shown in the figure. The bus bar 3 includes a pair of electrode insertion holes 63 and 63 in the longitudinal direction (direction along the long side), a pair of fixed portions 64 and 64 in the short direction (direction along the short side), and the fixed portion. A total of four positioning protrusions 65 disposed on both sides of the portions 64 and 64. The pair of electrode insertion holes 63, 63 is formed as a portion through which the opposing electrodes 33, 34 (see FIG. 5) between the adjacent batteries 32 are inserted.

  The pair of fixed portions 64 and 64 are disposed and formed at the center position of the long side of the bus bar 3. The pair of fixed portions 64 and 64 are hooked and fixed to the pair of fixing portions 45 and 45 (see FIG. 8) of the bus bar fixing portion 43 in the resin plate 2 (a portion to be locked and a portion to be prevented from coming off). Formed as. When the bus bar 3 is accommodated and fixed to the bus bar fixing portion 43, the central portion of the bus bar 3 is placed on the receiving portion 44 (see FIG. 8) of the bus bar fixing portion 43 and a pair of fixing portions 45 and 45. It will be in a state where it is fixed and cannot be removed.

  A total of four positioning protrusions 65 arranged on both sides of the fixed portions 64, 64 are formed as portions that engage with the four positioning portions 46 (see FIG. 8) of the bus bar fixing portion 43. When the positioning protrusions 65 are engaged with the positioning portions 46 on both sides of the fixed portions 64 and 64, the bus bar 3 accommodated and fixed in the bus bar fixing portion 43 is not swung in the longitudinal direction.

  In FIG. 12, the bus bar 3 is housed and fixed in the bus bar fixing portion 43 of the left divided resin plate main body 35. In reference to assembling the left divided resin plate 6, reference numeral 66 indicates an L-shaped terminal constituting the external device mounting means 4 (see FIGS. 5 to 7). The L-shaped terminal 66 is a component for connecting an external device and is assembled at a predetermined position of the terminal case portion 47. The L-shaped terminal 66 has a stud bolt 67 on the tip side. Further, in connection with the assembly of the left divided resin plate 6, the reference numeral 68 also indicates an L-shaped terminal. The L-shaped terminal 68 is provided as a portion for connecting a wire terminal of a power cable terminal (not shown). A stud bolt 69 is provided on the distal end side of the L-shaped terminal 68.

  In FIG. 13, the bus bar 3 is accommodated and fixed in the bus bar fixing portion 43 of the right divided resin plate main body 54. In reference to assembling the right divided resin plate 7, reference numeral 70 indicates an L-shaped terminal. The L-shaped terminal 70 is provided as a portion for connecting a wire terminal of a power cable terminal (not shown). Two stud bolts 71 are provided on the distal end side of the L-shaped terminal 70.

  In FIG. 14, the assembly of the part of the external device attachment means 4 is completed by closing the terminal cover portions 49 and 50 from the state of FIG. Moreover, the assembly of the part of the electric wire connection means 5 is also completed by closing the cover part 53. Thereby, the assembly of the left side divided resin plate 6 is completed.

  In FIG. 15, the terminal cover 62 is closed from the state shown in FIG. Thereby, the assembly of the right side divided resin plate 7 is completed.

  In FIG. 14 and FIG. 15, the first connection lock portion 42 having a locking projection shape of the left divided resin plate 6 is inserted into the second connection lock portion 59 having a locking frame shape of the right divided resin plate 7 (see FIG. 17). When these are in the locked state (see FIG. 17), the left divided resin plate 6 and the right divided resin plate 7 are connected to form a long resin plate 2, and the bus bar module 1 as shown in FIGS. 5 to 7 and FIG. A series of assembly is completed. The assembled bus bar module 1 is attached to one side S of the battery assembly 31 as shown in FIG.

  As described above with reference to FIGS. 1 to 17, the resin plate molding die 8 is a die that molds the resin plate 2 into two divided states in the middle of the battery arrangement direction. The resin plate molding die 8 is provided with the first divided resin plate molding portion 13 and the second divided resin plate molding portion 14 in the mold body 11, and at least the first divided resin plate molding portion 13 and the first divided resin plate molding portion 13. One of the two divided resin plate molding portions 14, that is, in this embodiment, the second divided resin plate molding portion 14 is a mold configured so that the length of the molded product can be changed using the insert 15. Accordingly, there is an effect that the length of the resin plate 2 can be flexibly changed by increasing / decreasing the nesting 15 with respect to the increase / decrease of the number of the batteries 32. Thereby, even if the number of the batteries 32 increases or decreases, it is not necessary to newly install the entire mold, and as a result, an effect of suppressing an increase in cost can be achieved. Moreover, since the resin plate molding die 8 is a die that forms the resin plate 2 in a two-divided state in the middle of the battery arrangement direction as described above, the resin plate molding die 8 is made of resin by using a divided portion in such a die. There is also an effect that an irregularly shaped portion (external device mounting means 4) can be easily provided in the middle of the plate 2. In addition, the resin plate molding die 8 also has an effect that the projection area of the die can be reduced as described in the example of co-removal.

  On the other hand, the bus bar module 1 can provide the bus bar module 1 in which the length of the resin plate 2 and the like can be flexibly changed as the number of batteries 32 increases and decreases. In addition, the bus bar module 1 can be connected and accessed from the upper side of the battery assembly 31 to the external device mounting means 4 even when attached to the one side S of the battery assembly 31. Play. In addition, with respect to the production, there is also an effect that the bus bar module 1 whose length and the like can be flexibly changed according to the increase and decrease of the number of the batteries 32 due to the configuration and structure of the resin plate 2.

  It goes without saying that the present invention can be variously modified without departing from the spirit of the present invention.

  DESCRIPTION OF SYMBOLS 1 ... Bus bar module, 2 ... Resin plate, 3 ... Bus bar, 4 ... External apparatus attachment means (irregular shape part), 5 ... Electric wire connection means, 6 ... Left division resin plate, 7 ... Right division resin plate, 8 ... Resin plate molding die, 9 ... Fixed side die, 10 ... Movable side die, 11 ... Mold body, 12 ... Molding part, 13 ... First split resin plate molding part, 14 ... Second split resin plate Molding part, 15 ... Nest, 31 ... Battery assembly, 32 ... Battery, 33, 34 ... Electrode, 35 ... Left divided resin plate body (resin plate body, first divided resin plate body), 36 ... Hinge, 37 ... External device mounting portion, 38 ... Electric wire connection portion, 39 ... Upper bus bar fixing portion group, 40 ... Lower bus bar fixing portion group, 41 ... Bridge portion, 42 ... First connection lock portion ( A single connection lock part), 43 ... a bus bar fixing part, 44 ... a receiving part, 45 ... a fixing part, 46 ... positioning part, 47 ... terminal case part, 48 ... hinge, 49, 50 ... terminal cover part, 51 ... electric wire terminal Receiving part 52 ... hinge 53 ... cover part 54 ... right split resin plate main body (resin plate main body, second split resin plate main body) 55 ... electric wire connecting part 56 ... upper side bus bar fixing part group 57 ... Lower side bus bar fixing part group, 58 ... Bridge part, 59 ... Second connection lock part (second connection lock part), 60 ... Wire terminal receiving part, 61 ... Hinge, 62 ... Cover part, 63 ... Electrode insertion Hole: 64: Fixed portion 65: Positioning protrusion 66, 68, 70: L-shaped terminal 67, 69, 71: Stud bolt, DL: Dividing line, S: One side

Claims (7)

A plurality of bus bars that connect the batteries adjacent to each other in a battery assembly including a plurality of batteries, and a plurality of bus bar fixing portions that are formed in a shape extending in the battery arrangement direction and that individually accommodate and fix the plurality of bus bars. In a molding die for resin molding the resin plate of a bus bar module including a resin plate formed into a shape,
A first divided resin plate molding part and a second divided resin plate molding part for molding the resin plate in a two-divided state in the middle of the battery arrangement direction are provided in a mold body, and at least the first divided resin plate molding One of the first and second divided resin plate molding parts is configured to be capable of changing the length of the molded product in the battery arrangement direction using a nesting. In the resin plate molding die according to claim 1,
As the resin plate, a resin plate main body on which the plurality of bus bar fixing portions are formed, and an external device mounting portion that is coupled to the resin plate main body via a hinge and protrudes in a direction orthogonal to the battery arrangement direction. And forming the first divided resin plate molded portion and the second divided resin plate molded portion so as to be in the two-divided state in accordance with the position of the external device mounting portion. Resin plate mold. In the resin plate molding die according to claim 2,
As the resin plate main body, formed in the first divided resin plate main body and the second divided resin plate main body formed in the two-divided state, the first divided resin plate main body and the second divided resin plate main body. Forming the first divided resin plate forming portion and the second divided resin plate forming portion so as to have a first connection lock portion and a second connection lock portion which are connected to each other. Resin plate molding mold. In the resin plate molding die according to claim 2 or 3,
The first divided resin plate molding part and the second divided resin plate molding part are formed so as to take two or both of the resin plates. A resin plate formed using the resin plate molding die according to claim 1, 2, 3 or 4,
A plurality of bus bars individually housed and fixed in a plurality of bus bar fixing portions formed on the resin plate;
A bus bar module comprising: The bus bar module according to claim 5,
As the resin plate, having a resin plate main body in which the plurality of bus bar fixing portions are formed, and an external device mounting portion coupled to the resin plate main body via a hinge,
In a state where the bus bar module is attached to one side surface of a battery assembly composed of a plurality of batteries, the external device attachment portion is bent by the hinge and used in a protruding direction. A first step of forming the resin plate in a two-divided state using the resin plate molding die according to claim 1, 2, 3, or 4;
A second step of connecting from the two split state and forming as the resin plate;
A third step of individually accommodating and fixing a plurality of bus bars to a plurality of bus bar fixing portions formed on the resin plate;
A bus bar module manufacturing method comprising:

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