JP2008097942A - Battery pack - Google Patents

Battery pack Download PDF

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Publication number
JP2008097942A
JP2008097942A JP2006276910A JP2006276910A JP2008097942A JP 2008097942 A JP2008097942 A JP 2008097942A JP 2006276910 A JP2006276910 A JP 2006276910A JP 2006276910 A JP2006276910 A JP 2006276910A JP 2008097942 A JP2008097942 A JP 2008097942A
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JP
Japan
Prior art keywords
lead plate
end
end holding
battery
batteries
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Ceased
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JP2006276910A
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Japanese (ja)
Inventor
Hideyo Morita
Yasuhiro Ono
Haruhiko Yoneda
尉浩 大野
秀世 森田
晴彦 米田
Original Assignee
Sanyo Electric Co Ltd
三洋電機株式会社
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Application filed by Sanyo Electric Co Ltd, 三洋電機株式会社 filed Critical Sanyo Electric Co Ltd
Priority to JP2006276910A priority Critical patent/JP2008097942A/en
Publication of JP2008097942A publication Critical patent/JP2008097942A/en
Ceased legal-status Critical Current

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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage
    • Y02E60/12Battery technologies with an indirect contribution to GHG emissions mitigation

Abstract

<P>PROBLEM TO BE SOLVED: To inexpensively carry out mass production even when stored number of batteries becomes large by arranging batteries and lead plates in fixed positions. <P>SOLUTION: The battery pack has an insulating holder 2 storing batteries 1 into a plurality of rows and a plurality of tiers into a plurality of division blocks 2A. Each division block 2A is divided into a first end part retaining block 3A and a second end part retaining block 3B. The first end part retaining block 3A and the second end part retaining block 3B are in the same shape, an end plate 7 provided with a retaining part 6 on a facing inner surface and a fitting part 8 fitting the lead plate 4 at a fixed position on an outer surface is integrally formed by plastic, and the first end part retaining block 3A and the second end part retaining block 3B of each respective division block 2A is formed in the same shape. The end plate 7 arranges the lead plate 4 connected to 2 rows of batteries 1 and the lead plate 4 connected to one row of batteries 1 in the fitting part 8 to connect batteries 1 in the same row in parallel and then connect it in series with the battery 1 in the next row which is adjacent. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a battery pack in which a plurality of batteries are housed in a plurality of rows and stages, and more particularly to a battery pack in which a plurality of batteries are connected in parallel and in series to increase output.

An assembled battery used for a power source of an electric motorcycle or the like has a large number of batteries connected in parallel and in series to increase charging capacity and output voltage. In this type of battery, a lead plate is spot-welded to a battery electrode and stored in a case. The battery must be placed in a fixed position in the case. In particular, an assembled battery used for a vibrant electric motorcycle or the like needs to hold the battery firmly in place. In order to realize this, an assembled battery that holds a plurality of batteries in place by an insulating holder has been developed.
JP 2006-100148 A

  As shown in FIG. 1, the assembled battery of Patent Document 1 stores a plurality of batteries 91 side by side in a plurality of rows and stages in a case 92 in a parallel posture in which end faces are positioned on the same surface. The batteries 91 shown are housed in 10 rows and 2 rows. A lead plate 94 is connected to the end electrode of the battery 91 housed in the case 92, and a plurality of batteries 91 are connected by the lead plate 94. The case 92 is provided with a plurality of holding cylinders 96 which are formed of plastic and into which the battery 91 is inserted and arranged at a fixed position. Further, the case 92 is integrally provided with a stopper rib 99 for arranging the lead plate 94 in a fixed position along the periphery of the opening of the holding cylinder 96. A lead plate 94 is disposed inside the stopper rib 99, and the lead plate 94 is disposed at a fixed position. In this assembled battery, the lead plate 94 is arranged inside the stopper rib 99 and arranged at a fixed position of the case 92, and the lead plate 94 is connected to the end electrode of the battery 91 by spot welding.

  In the assembled battery having the structure shown in FIG. 1, the battery and the lead plate can be arranged at fixed positions. However, as the number of batteries increases, the component cost increases. In particular, there is a drawback that a mold for molding a case having a holding cylinder for molding plastic becomes large and complicated, resulting in an increase in manufacturing cost.

  The present invention has been developed for the purpose of solving this drawback. An important object of the present invention is to provide an assembled battery that can be mass-produced at a low cost even when the number of batteries to be accommodated is increased while arranging the battery and the lead plate in a fixed position.

The assembled battery of the present invention has the following configuration in order to achieve the above-described object.
In the assembled battery, a plurality of batteries 1 are accommodated in the insulating holders 2 and 22 of the batteries 1 in a plurality of rows and a plurality of stages in a parallel posture. The insulating holders 2 and 22 are divided into a plurality of divided blocks 2A and 22A. Further, each divided block 2A, 22A is divided into first end holding blocks 3A, 23A and second end holding blocks 3B, 23B so as to hold both ends of the battery 1 separately. The first end holding blocks 3A and 23A and the second end holding blocks 3B and 23B are arranged so that the holding portions 6 and 26 for holding one end portion of the battery 1 on the inner side facing each other and holding them in place are arranged on the outer side. The end plates 7 and 27 having the fitting portions 8 and 28 of the lead plate 4 for fitting the lead plates 4 fixedly welded to the end electrodes of the battery 1 held by the holding portions 6 and 26 at fixed positions. Is provided. Furthermore, the holding portions 6 and 26 and the end plates 7 and 27 are integrally formed of plastic, and the first end holding blocks 3A and 23A and the second end holding blocks 3B and 23B have the same shape. . Furthermore, the first end holding blocks 3A and 23A and the second end holding blocks 3B and 23B of the respective divided blocks 2A and 22A are also formed in the same shape. The end plates 7 and 27 of the end holding blocks 3 and 23 have the lead plates 4 connected to the two rows of batteries 1 and the lead plates 4 connected to the one row of batteries 1 arranged in the fitting portions 8 and 28. Then, the batteries 1 in the same row are connected in parallel with the lead plate 4, and the batteries 1 in the adjacent row are connected in series. Furthermore, the lead plate 4 has a connecting portion 4X protruding from the insulating holders 2 and 22, and this connecting portion 4X is connected to a circuit board 5 disposed in parallel with the insulating holders 2 and 22.

  In the assembled battery of the present invention, the first end holding block 3A and the second end holding block 3B have holding units 6 for storing the batteries 1 in odd rows, and the first end holding block 3A and the first end holding block 3A The end plate 7 of the second end holding block 3B is fitted to the fitting portion 8A of the first row lead plate 4A connected to the first row of batteries 1 and the second row lead plate 4B connected to the second row of batteries 1. A wearing portion 8B can be provided. Further, this assembled battery is provided with protruding partition walls 11 for fitting the lead plates 4 along the boundary portion between the first row lead plate 4A and the second row lead plate 4B and both sides thereof, and the lead plate is provided between the partition plates 11. 4 fitting portions 8.

  In the assembled battery of the present invention, the first end holding block 3A and the second end holding block 3B can be provided with fitting recesses 14 for guiding the connecting portion 4X of the lead plate 4 at both upper and lower ends.

  In the assembled battery of the present invention, the first end holding block 23A and the second end holding block 23B have the holding portions 26 for storing the batteries 1 in even rows, and the first end holding block 23A and the second end holding block 23A The end plate 27 of the second end holding block 23B is fitted to the fitting portion 28 of the first row lead plate 4A connected to the first row of batteries 1 and the second row lead plate 4B connected to the second row of batteries 1. A landing portion 28 can be provided. Furthermore, the lead plate 4 is composed of a fitting recess 34 for guiding the connecting portion 4X of the first row lead plate 4A and the second row lead plate 4B and an end fitting portion 36 for fitting the opposite end of the connecting portion 4X. It can be set as the fitting part 28 of this.

  Further, in the assembled battery of the present invention, the first end holding blocks 3A and 23A and the second end holding blocks 3B and 23B are provided with connecting projections 15 and 35 protruding outward in the upper and lower directions. The first and second end holding blocks 3A and 23A can be connected to the second end holding blocks 3B and 23B by connecting the convex portions 15 and 35.

  The assembled battery of the present invention is characterized in that it can be mass-produced at low cost even when the number of batteries to be accommodated is increased while the battery and the lead plate are arranged at fixed positions with an insulating holder. That is, the assembled battery of the present invention accommodates a plurality of batteries in a plurality of rows and a plurality of stages in a parallel posture in an insulating holder, and the insulating holder is divided into a plurality of divided blocks, and each divided block is further divided into batteries. The first end holding block and the second end holding block that hold both ends of the battery separately are divided into the first end holding block and the second end holding block facing each other inside the battery. A holding part that inserts one end of the lead plate and holds it in place, and an outer end plate that has a lead plate fitting part that fits the lead plate fixed to the battery end electrode in place. The holding portion and the end plate are integrally formed of plastic, and the first end holding block and the second end holding block have the same shape, and the first end holding portion of each divided block is held. Block and second end holding block The end plate of the end holding block is formed in the same shape, and a lead plate connected to two rows of batteries and a lead plate connected to one row of batteries are arranged in the fitting portion. Therefore, the batteries in the same row are connected in parallel, adjacent batteries in the adjacent row are connected in series, and the lead plate is provided with a connecting portion protruding from the insulating holder, and this connecting portion is arranged in parallel with the insulating holder. This is because it is connected to the circuit board.

  In particular, the assembled battery of the present invention forms the first end holding block and the second end holding block of all the divided blocks into the same shape, so that the end holding block formed into the same shape is provided. It can be used to store a large number of batteries. For example, in the assembled battery shown in FIGS. 2 to 4, the whole is divided into three divided blocks, and each divided block is divided into a first end holding block and a second end holding block. Therefore, the insulating holder is assembled with six end holding blocks formed by molding plastic into the same shape. Since this battery pack contains 15 batteries in 3 rows and 5 rows in each divided block, it uses 6 end holding blocks that are compactly formed while accommodating 45 batteries in total. Assembled.

  Further, in the assembled battery of the present invention, the end plate of the first end holding block and the second end holding block constituting each divided block is fitted to the first row lead plate and the second row lead plate fitting portion. The first row lead plate and the second row lead plate are put in the fitting portion and arranged in a fixed position, and the batteries in the same row are connected in parallel with the lead plates, and the batteries in the next row are connected in series. By electrically connecting the batteries, all the divided blocks are assembled in the same structure, and the number of batteries in the entire assembled battery can be freely adjusted by the number of divided blocks connected. For this reason, even in an assembled battery with a large number of batteries, the number of batteries can be increased, and the capacity and voltage can be increased freely by changing the number of connected divided blocks of the same structure without molding a large dedicated case with plastic. it can.

  In particular, in the battery pack of claim 2 of the present invention, in addition to the configuration of claim 1, the first end holding block and the second end holding block are provided with holding portions for storing the batteries in odd rows. The end plates of the first end holding block and the second end holding block have a fitting portion of a one-row lead plate connected to one row of batteries and two connected to two rows of batteries. A fitting part for the column lead plate is provided, and a partition wall for fitting the lead plate is provided to project along the boundary portion between the first row lead plate and the second row lead plate and on both sides thereof, and leads between the partition walls. It is used as the fitting part of the board. The assembled battery having this structure is provided with a first end holding block and a second end block that are molded in the same shape while providing a partition that reliably insulates adjacent lead plates between the first row lead plate and the second row lead plate. An end holding block is used, and this can be used by inverting it upside down. As shown in the perspective view of FIG. 3, the assembled battery is different in the drawing position of the connecting portion that connects the lead plate to the circuit board in the first end holding block and the second end holding block. One end holding block has lead plate connecting portions arranged on both side portions, and the other end holding block has connecting portions arranged at the central portion and one side portion. However, since all the divided blocks have the lead plate connecting portions arranged at the same position, the same divided blocks are connected to form an assembled battery. Therefore, the assembled battery having this structure can be assembled by arranging a large number of batteries at fixed positions using the end holding block having the same shape in which the partition walls are provided between the lead plates.

  The battery pack according to claim 3 of the present invention is further fitted with the first end holding block and the second end holding block for guiding the connecting portion of the lead plate in addition to the configuration of claim 2. Since the recesses are provided at both upper and lower ends, a large number of batteries are placed in a fixed position with the same shape of the end holding block while the lead plate connection portions are arranged in the fitting recesses, and the lead plates are insulated by the partition walls. Can be assembled into a state to do.

  Furthermore, in the battery pack of claim 4 of the present invention, in addition to the configuration of claim 1, the batteries are accommodated in even rows in the first end holding block and the second end holding block, and the end holding is performed. The end plate of the block is provided with a fitting portion for a one-row lead plate connected to one row of batteries and a fitting portion for a two-row lead plate connected to two rows of batteries. In the end holding block, the fitting concave portion for guiding the connecting portion between the lead plate and the two-row lead plate and the end fitting portion for fitting the end portion on the opposite side of the connecting portion are used as the fitting portion of the lead plate. Holds even rows of batteries. As shown in FIGS. 11 and 12, the assembled battery can be assembled by connecting a plurality of divided blocks that fix the battery and the lead plate in the same manner. In this divided block, the first end holding block has a single row lead plate fixed on both sides thereof, and a two row lead plate is fixed therebetween, and the second end holding block has a double row lead plate. Only fixed. In this divided block, the lead plate fitting portion is used as a one-row lead plate and two rows as a fitting recess for guiding the lead plate connecting portion and an end fitting portion for fitting the end portion of the lead plate. The lead plate can be fixed at different positions. Therefore, this assembled battery can also be assembled by assembling divided blocks using end holding blocks having the same shape, and further connecting the divided blocks assembled in the same manner to freely adjust the number of batteries to be stored.

  In addition to the structure of claim 1, the assembled battery of claim 5 of the present invention has a first end holding block and a second end holding block protruding outward in the upper and lower directions to form a connecting projection. Since this connection convex part is connected and the 1st end holding block and the 2nd end holding block are connected, the 1st end holding block is used, using the same shape end holding block. The end holding block and the second end holding block can be reliably connected.

  Embodiments of the present invention will be described below with reference to the drawings. However, the example shown below illustrates the assembled battery for embodying the technical idea of the present invention, and the present invention does not specify the assembled battery as follows.

  Further, in this specification, in order to facilitate understanding of the scope of claims, numbers corresponding to the members shown in the examples are indicated in the “claims” and “means for solving problems” sections. It is added to the members. However, the members shown in the claims are not limited to the members in the embodiments.

  The assembled battery shown in FIGS. 2 to 16 includes insulating holders 2 and 22 for storing a plurality of batteries 1, and a circuit board connected to the batteries 1 stored in the insulating holders 2 and 22 via lead plates 4. 5 and an outer case 18 indicated by a chain line that accommodates them.

  The insulating holders 2 and 22 store a plurality of batteries 1 in a plurality of rows and a plurality of stages in a parallel posture. The battery packs of FIGS. 2 to 5 store the batteries 1 in 9 rows and 5 levels, and the battery packs of FIGS. 10 to 15 store the batteries 1 in 8 rows and 5 levels. The insulating holders 2 and 22 are divided into a plurality of divided blocks 2A and 22A. The assembled battery of FIGS. 2 to 5 divides the insulating holder 2 into three blocks 2A, and the assembled battery of FIGS. 10 to 15 divides the insulating holder 22 into two blocks 23. Yes.

  Each divided block 2A, 22A is divided into first end holding blocks 3A, 23A and second end holding blocks 3B, 23B so as to hold both ends of the battery 1 separately. The battery 1 housed in each block has a lead plate 4 connected to end electrodes at both ends thereof. The lead plate 4 connects the batteries 1 in the same row accommodated in the plurality of divided blocks 2A and 22A in parallel, the batteries 1 in adjacent rows in series, and further detects the battery voltage of each of the batteries 1 Is connected to the circuit board 5.

  The battery 1 is a rechargeable secondary battery, and is a cylindrical lithium ion secondary battery. However, the battery may be a nickel metal hydride battery or a nickel cadmium battery. Furthermore, in the illustrated battery pack, the battery 1 is a cylindrical battery, but may be a square battery. The divided blocks 2A and 22A are accommodated in a plurality of rows and a plurality of rows so that the battery 1 is in a parallel posture and the lead plate 4 is welded and connected to the end electrodes at both ends. The divided blocks 2A shown in FIGS. 2 to 7 store the batteries 1 in odd rows, that is, 3 rows and 5 rows. The divided blocks 22A in FIGS. 10 to 16 store the batteries 1 in even columns, that is, four columns and five stages. In order to weld the lead plate 4 to the end electrode of the battery 1, the divided blocks 2 </ b> A and 22 </ b> A store the battery 1 to be stored so that the end surfaces are arranged on substantially the same plane. The divided blocks 2A and 22A in the figure store the batteries 1 in three rows or four rows and store the batteries 1 in five stages, but the divided blocks can be stored in three rows or less, or five rows or more. It is also possible to store in 6 or less levels.

  The first end holding blocks 3A and 23A and the second end holding blocks 3B and 23B are arranged so that the holding portions 6 and 26 for holding one end portion of the battery 1 on the inner side facing each other and holding them in place are arranged on the outer side. The end plates 7 and 27 having the fitting portions 8 and 28 of the lead plate 4 for fitting the lead plates 4 fixedly welded to the end electrodes of the battery 1 held by the holding portions 6 and 26 at fixed positions. Have In the first end holding blocks 3A and 23A and the second end holding blocks 3B and 23B, the holding portions 6 and 26 and the end plates 7 and 27 are integrally formed of plastic. Further, the first end holding blocks 3A and 23A and the second end holding blocks 3B and 23B are formed of the same shape with plastic. Further, the first end holding blocks 3A and 23A and the second end holding blocks 3B and 23B of the respective divided blocks 2A and 22A are also molded in the same shape with plastic.

  The first end holding blocks 3A and 23A and the second end holding blocks 3B and 23B are each a holding unit for inserting and holding the battery 1 as shown in FIGS. 5 to 9, 15 and 16. End plates 7 and 27 are connected to both ends of 6 and 26, respectively. The end holding blocks 3 and 23 are manufactured by molding plastic which is an insulating material. The holding portions 6 and 26 are provided through a plurality of insertion holes 9 and 29 through which the battery 1 is inserted. Since the first end holding block 3A and the second end holding block 3B in FIGS. 5 to 9 store the cylindrical battery 1 in 3 rows × 5 stages, 15 insertion holes 9 are provided. . Since the first end holding block 23A and the second end holding block 23B2 in FIG. 16 store the cylindrical battery 1 in 4 rows × 5 stages, 20 insertion holes 29 are provided. The end holding blocks 3 and 23 in the above figures are arranged so that the center line of the cylindrical battery 1 is located at the intersection of the grid grid, but the end holding blocks are not shown, but are arranged in the next row. It is also possible to arrange the batteries to be arranged so as to be located in the valleys of adjacent batteries, that is, the batteries arranged in a plurality of rows in a “stacked” state. The end holding block is housed in a state where the batteries in the same stage are shifted up and down.

  Furthermore, the end holding block 3 shown in FIG. 5 to FIG. 9 is provided with a stopper projection 10 that prevents the battery 1 from coming off at the opening on the end plate 7 side. As shown in FIG. 9, the stopper convex portion 10 is provided so as to protrude from the inner peripheral portion of the insertion hole 9 so as not to obstruct the welding of the end electrode of the battery 1 to the lead plate 4. The battery 1 to be inserted into the insertion hole 9 of the holding part 6 hits the stopper convex part 10 on the end plate 7 side and is arranged at a fixed position of the insertion hole 9 which is the holding part 6.

  The divided blocks 2A and 22A divide the holding portions 6 and 26 into two in the middle in the axial direction, and divide them into first end holding blocks 3A and 23A and second end holding blocks 3B and 23B. In this structure, half of the battery 1 is held in the holding portions 6 and 26 of the first end holding blocks 3A and 23A, and the other half of the battery 1 is held in the second end holding blocks 3B and 23B. The first end holding blocks 3A and 23A and the second end holding blocks 3B and 23B are integrally formed of plastic so as to connect the end plates 7 and 27 to the ends of the divided holding portions 6 and 26. The The end holding blocks 3 and 23 are inserted with the battery 1 through an opening which is a split end of the holding units 6 and 26, and the first end holding blocks 3A and 23A and the second end holding blocks 3B and 23B. Are connected to each other, and the plurality of batteries 1 are accommodated in the divided blocks 2A and 22A.

  As shown in FIGS. 5 to 7, 15, and 16, the holding portions 6 and 26 of the end holding blocks 3 and 23 are cylindrical insertion holes 9 and 29 along almost the entire circumference of the surface of the battery 1. is there. However, the holding portion does not necessarily need to be the insertion holes 9 and 29 in a cylindrical shape along the entire circumference of the battery. Although not shown, the holding portions 6 and 26 have inner surfaces formed in a tapered shape with an inner diameter gradually decreasing toward the end plate side. The holding portions 6 and 26 can hold the battery 1 in a fixed position by bringing the inner surfaces of the end plates 7 and 27 into surface contact with the surface of the battery 1. In addition, the design and demolding of the mold for molding the holding portions 6 and 26 with plastic can be simplified.

  The end plates 7 and 27 are connected to both ends of the holding portions 6 and 26, and the lead plate 4 is disposed at a fixed position. The lead plate 4 arranged at a fixed position by the end plates 7 and 27 is spot welded to the end electrodes of the battery 1 exposed from the openings of the insertion holes 9 and 29 of the holding parts 6 and 26, and is attached to the battery 1. Connected. The divided blocks 2A in FIGS. 2 to 7 store the batteries 1 in odd rows in the first end holding block 3A and the second end holding block 3B. The end plates 7 of the first end holding block 3A and the second end holding block 3B shown in these drawings are fitted with a fitting portion 8A of a one-row lead plate 4A connected to one row of batteries 1 and two end plates 7A. A fitting portion 8B of a two-row lead plate 4B connected to the row of batteries 1 is provided. Further, a partition wall 11 for fitting the lead plate 4 is provided so as to protrude along the boundary portion between the first row lead plate 4A and the second row lead plate 4B and both sides thereof, and the fitting portion of the lead plate 4 is provided between the partition walls 11 8 and 28. Further, the first end holding blocks 3A and 23A and the second end holding blocks 3B and 23B are provided with protruding inner partition walls 11 along the outside of the lead plate 4 on the upper and lower edges. Yes.

  The one-row lead plate 4A and the two-row lead plate 4B have an outer circumference in an arc shape so as to follow the circular end electrodes provided at both ends of the electrodes. Therefore, the fitting part 8 of the first end holding block 3A and the fitting part 8 of the second end holding block 3B have arcuate sides.

  The end holding block 3 of the divided block 2A for storing the batteries 1 in odd rows is a battery of the divided block 2A arranged adjacent to the partition wall 11 provided outside the fitting portion 8 of the first row lead plate 4A. The connection recessed part 12 which arrange | positions the connection plate 13 which connects 1 in series in a fixed position is provided. The connecting recess 12 is placed in a fixed position with the connecting plate 13 inserted therein. Since the end holding block 3 of the divided block 2A for storing the batteries 1 in the odd rows is provided with the fitting portion 8 of the single row lead plate 4A on one side, only the outside of the fitting portion 8 of the single row lead plate 4A is provided. The connection recessed part 12 is provided. The end holding block 3 can be connected upside down so that the connecting recess 12 can be reversed left and right. That is, the divided block 2A in FIG. 6 is provided with a connecting recess 12 on the left side in the front in the figure, and the divided block 2A in FIG. 7 is provided with a connecting recess 12 on the right side in the front in the figure. The end holding block 3 formed in the same shape is connected upside down to move the connecting recess 12 to the left and right.

  Further, the end holding block 3 of the divided block 2 </ b> A for storing the batteries 1 in odd rows is provided with fitting recesses 14 for guiding the connecting portions 4 </ b> X of the lead plate 4 in the upper and lower partition walls 11. Since the end holding block 3 shown in the figure stores the batteries 1 in three rows, three fitting recesses 14 are provided at both sides and in the middle of the partition wall 11 provided above and below. The end holding block 3 having this shape can be used by inverting the top and bottom to guide the connecting portion 4X of the lead plate 4 to the fitting recess 14 provided in the upper and lower partition walls 11.

  The first end holding block 3A and the second end holding block 3B shown in FIG. 6 and FIG. 7 are formed in a rectangular parallelepiped as a whole so as to open the insertion holes 9 of the holding unit 6 on opposing surfaces. A fitting portion 8 for the lead plate 4 is provided on the outside. Further, in order to connect the first end holding block 3 </ b> A and the second end holding block 3 </ b> B, a connecting projection 15 is provided so as to protrude outward in the vertical direction. The connecting projections 15 are connected to connect the first end holding block 3A and the second end holding block 3B. Since the first end holding block 3A and the second end holding block 3B that store the batteries 1 in odd rows are connected upside down, the connecting projections 15 are formed in the same shape. A set screw hole, a connecting projection (not shown), or the like is provided so that the first end holding block 3A and the second end holding block 3B can be connected.

The assembled battery in which the batteries 1 are stored in the odd-numbered rows in the divided block 2A is assembled as follows.
(1) As shown in FIGS. 7 and 8, one end of the battery 1 is inserted into the insertion hole 9 that is the holding portion 6 of the first end holding block 3A, and the other end of the battery 1 is connected to the second end. The first end holding block 3A and the second end holding block 3B are connected to each other through the insertion hole 9 which is the holding portion 6 of the holding block 3B. The assembled battery shown in FIGS. 2 to 5 connects three divided blocks 2A. The divided blocks 2A disposed on both sides are provided with a one-row lead plate 4A on the right side in the front and a two-row lead plate 4B on the left side in the drawing so that the connecting portion 4X protrudes upward. In the central divided block 2A, a one-row lead plate 4A is provided on the left side in front, and a two-row lead plate 4B is provided on the right side in front. Therefore, the divided blocks 2A on both sides and the center are provided with the first row lead plate 4A and the second row lead plate 4B on the opposite side. The first row lead plate 4A and the second row lead plate 4B can be changed left and right by inverting the divided block 2A up and down. Therefore, the divided blocks 2A on both sides and the divided block 2A on the center are assembled by inverting the end holding block 3 upside down. The end plates 7 located at both ends of the battery 1 have the first row lead plate 4A and the second row lead plate 4B disposed on the opposite side, and connect the batteries 1 in series. The first end holding block 3 </ b> A and the second end holding block 3 </ b> B are connected in a state in which the connecting protrusion 15 is connected with a set screw and the battery 1 is housed inside.

(2) The first row lead plate 4 </ b> A and the second row lead plate 4 </ b> B guided by the fitting portion 8 of the end plate 7 are welded to the end electrode of the battery 1. In this state, the first row lead plate 4A and the second row lead plate 4B connect the batteries 1 in the same row in parallel and connect the batteries 1 in the adjacent rows in series.

(3) As shown in FIG. 3, the three divided blocks 2 </ b> A are linearly connected, and the one-row lead plates 4 </ b> A of the adjacent divided blocks 2 </ b> A are connected in series by the connection plate 13. The connection plate 13 is disposed in the connection recess 12 provided in the partition wall 11 of the end holding block 3.

(4) Further, three divided blocks 2A are connected to form one insulating holder 2, and a substrate holder 17 for accommodating the circuit board 5 is disposed on the insulating holder 2 as shown in FIG. Divided blocks 2A divided into three blocks are connected by a frame (not shown), or are connected by adhering adjacent divided blocks 2A, connected by a fitting structure, or welded. The connecting portion 4X of the lead plate 4 is connected to the circuit board 5.

  The battery core pack 19 assembled as described above is an assembled battery completed by being put in the outer case 18.

  The plurality of batteries 1 are connected to each other in series and in parallel by welding a lead plate 4 to the end face. Each lead plate 4 is connected to a circuit board 5 disposed on the upper surface of the insulating holder 2. The lead plate 4 is provided with a connecting portion 4 </ b> X connected to the circuit board 5 so as to protrude upward from the insulating holder 2. The lead plate 4 is connected to the connection portion 4X by soldering lead pins 16, and is connected to the circuit board 5 through these.

  The circuit board 5 connected to the battery 1 via the lead plate 4 is mounted with a protection circuit (not shown) that detects each battery voltage and cuts off the charge / discharge current. When any battery voltage becomes lower than the minimum voltage, the protection circuit switches off the switching element that cuts off the discharge current to cut off the discharge current. Further, when any battery voltage becomes higher than the maximum voltage, the switching element for stopping charging is switched off to stop charging. As described above, the battery pack in which the protection circuit that controls charging / discharging by detecting each battery voltage is mounted can be used safely while protecting the battery 1.

  The substrate holder 17 accommodates the circuit board 5 and arranges it at a predetermined position. The substrate holder 17 is provided with a peripheral wall around the bottom plate and has a box shape with an upper opening. The circuit board 5 is accommodated inside the peripheral wall and disposed at a predetermined position. The substrate holder 17 is fixed to a fixed position of the insulating holder 2 by screwing or by a locking structure.

  Further, the substrate holder 17 is provided with a support portion (not shown) protruding from the bottom plate, and the circuit board 5 is fixed to the support portion via a set screw so that the circuit substrate 5 is removed from the bottom plate of the substrate holder 17. Place it at a distance. In the circuit board 5, electronic components (not shown) for realizing a protection circuit and the like are arranged on the surface of the substrate holder 17 facing the bottom plate. Furthermore, the circuit board can be potted and embedded in an insulating resin, and the circuit board can be protected with the potting resin.

  As shown in FIGS. 10 to 16, the divided block 22A for storing the batteries 1 in even rows fixes only the two-row lead plate 4B to one end holding block 23, but the other end holding block. 23, the one-row lead plate 4A is provided on both sides, and the two-row lead plate 4B is fixed between the one-row lead plate 4A. That is, the division block 22A is different in the arrangement of the lead plates 4 fixed on both sides. Therefore, it is not possible to provide the fitting portion 28 that can fit only the first row lead plate 4A and the second row lead plate 4B. Therefore, the first end holding block 23A and the second end holding block 23B project a partition wall between the first row lead plate 4A and the second row lead plate 4B like the odd row end holding block 3. Not provided. The partition wall 31 is provided only on the upper edge and the lower edge of the end holding block 23, and the fitting portion 28 is provided that can arrange both the first row lead plate 4 </ b> A and the second row lead plate 4 </ b> B at fixed positions by changing the fixing position. ing.

  The fitting portion 28 includes a fitting recess 34 that guides the connecting portion 4X of the first row lead plate 4A and the second row lead plate 4B, and an end fitting portion 36 that fits the opposite end of the connecting portion 4X. It consists of. The fitting recess 34 is provided in the partition wall 31 on the upper edge of the end holding block 23, and the end fitting part 36 is provided in the partition wall 31 provided on the lower edge of the end holding block 23. The end fitting portion 36 provided on the partition wall 31 at the lower edge is formed in an inner shape along the lead plate 4 cut into an arc shape. The fitting portion 28 is arranged at a fixed position by inserting the connecting portion 4X of the first row lead plate 4A and the second row lead plate 4B into the fitting recess 34, and further, the end portion on the opposite side of the connecting portion 4X is an end portion. It is placed in a fixed position in the fitting portion 36, and is arranged at the position of the end plate 27. The divided blocks 22A for storing the batteries 1 in even rows are assembled in the same structure and connected to form an assembled battery. Therefore, unlike the divided block 2A that stores the batteries 1 in odd-numbered rows, the divided block 22A does not need to be connected with the end fitting portion 36 turned upside down. However, the end plate 27 of the end holding block 23 differs in the arrangement of the first row lead plate 4A and the second row lead plate 4B. Therefore, the fitting recess 34 is provided at a position where the connecting portion 4X of the first row lead plate 4A and the second row lead plate 4B can be fitted. The end holding block 23 in FIGS. 10 to 16 is provided with a fitting recess 34 at a position that is unevenly distributed in the middle between both ends of the partition wall 31 on the upper edge.

The assembled battery in which the batteries 1 are accommodated in the even blocks in the divided block 22A is assembled as follows.
(1) As shown in FIG. 16, one end of the battery 1 is inserted into the insertion hole 29 that is the holding portion 26 of the first end holding block 23A, and the other end of the battery 1 is set to the second end holding block 23B. The first end holding block 23 </ b> A and the second end holding block 23 </ b> B are connected to each other through the insertion hole 29 which is the holding portion 26. The assembled battery shown in FIGS. 10 to 15 connects two divided blocks 22A. In each divided block 22A, only one double-row lead plate 4B is fixed to one end plate 27, and the single-row lead plate 4A is fixed to both sides of the other end plate 27. Fix 4B. The first end holding block 23 </ b> A and the second end holding block 23 </ b> B are connected in a state where the connecting projection 35 is connected with a set screw and the battery 1 is housed inside.

(2) The first row lead plate 4 </ b> A and the second row lead plate 4 </ b> B guided by the fitting portion 28 of the end plate 27 are welded to the end electrode of the battery 1. In this state, the first row lead plate 4A and the second row lead plate 4B connect the batteries 1 in the same row in parallel and connect the batteries 1 in the adjacent rows in series.

(3) As shown in FIGS. 11 and 12, two divided blocks 22 </ b> A are linearly connected, and one row lead plate 4 </ b> A of adjacent divided blocks 22 </ b> A is connected in series by a connection plate 33. The divided blocks 22A assembled in the same shape are connected in such a posture that the two-row lead plate 4B is positioned on one side.

(4) Further, the two divided blocks 22 </ b> A are connected to form one insulating holder 22, and the substrate holder 17 that houses the circuit board 5 is disposed on the insulating holder 22. The divided blocks 22A divided into two blocks are connected by a frame (not shown), or the adjacent divided blocks 22A are bonded, connected by a fitting structure, or welded. The connecting portion 4X of the lead plate 4 is connected to the circuit board 5.

  The battery core pack 39 assembled as described above is an assembled battery that is completed in the outer case 18.

It is a perspective view of the conventional assembled battery. It is a perspective view of the assembled battery concerning one Example of this invention. It is a disassembled perspective view of the assembled battery shown in FIG. It is a disassembled perspective view of the assembled battery shown in FIG. FIG. 3 is a horizontal sectional view of the assembled battery shown in FIG. 2. It is a disassembled perspective view of the division | segmentation block of the assembled battery shown in FIG. It is a disassembled perspective view of the other division | segmentation block of the assembled battery shown in FIG. It is a front view of an edge part holding block. It is a rear view of the edge part holding block shown in FIG. It is a perspective view of the assembled battery concerning the other Example of this invention. It is a disassembled perspective view of the assembled battery shown in FIG. It is a rear view of the assembled battery shown in FIG. It is a disassembled perspective view of the assembled battery shown in FIG. It is a disassembled perspective view of the assembled battery shown in FIG. It is a horizontal sectional view of the assembled battery shown in FIG. It is a disassembled perspective view of the division | segmentation block of the assembled battery shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Battery 2, 22 ... Insulation holder 2A, 22A ... Divided block 3, 23 ... End part holding block 3A, 23A ... 1st end part holding block
3B, 23B: Second end holding block 4: Lead plate 4A: Single row lead plate
4B ... Double row lead plate
4X: Connection portion 5 ... Circuit board 6, 26 ... Holding portion 7, 27 ... End plate 8, 28 ... Fitting portion 8A ... Fitting portion
8B ... Fitting part 9, 29 ... Insertion hole 10 ... Stopper convex part 11, 31 ... Bulkhead 12 ... Connection concave part 13, 33 ... Connection plate 14, 34 ... Insertion concave part 15, 35 ... Connection convex part 16 ... Lead pin 17 ... Substrate holder 18 ... exterior case 19, 39 ... core pack 36 ... end fitting portion 91 ... battery 92 ... case 94 ... lead plate 96 ... holding cylinder 99 ... stopper rib

Claims (5)

  1. A battery assembly in which a plurality of batteries (1) are housed in parallel rows in a plurality of rows and a plurality of stages in the insulation holders (2) and (22) of the battery (1), the insulation holders (2) and (22 ) Is divided into a plurality of divided blocks (2A) and (22A), and each of the divided blocks (2A) and (22A) further holds the both ends of the battery (1) separately. 1 end holding blocks (3A), (23A) and second end holding blocks (3B), (23B),
    The first end holding block (3A), (23A) and the second end holding block (3B), (23B) are held in place by inserting one end of the battery (1) inside facing each other. A holding plate (6), (26) to be mounted on the outside, and a lead plate (4) fixed by welding to the end electrode of the battery (1) held by the holding unit (6), (26) are fixed on the outside. It includes an end plate (7), (27) having a fitting portion (8), (28) of a lead plate (4) to be fitted at a position,
    Further, the holding portions (6), (26) and the end plates (7), (27) are integrally formed of plastic, and the first end holding blocks (3A), (23A) and the second plate The end holding blocks (3B) and (23B) have the same shape. Furthermore, the first end holding blocks (3A) and (23A) of each of the divided blocks (2A) and (22A) are the same as the second end holding blocks (3A) and (23A). The end holding blocks (3B) and (23B) are also molded into the same shape,
    End plate (7), (27) of end holding block (3), (23) is connected to lead plate (4) connected to two rows of batteries (1) and one row of batteries (1) The lead plate (4) is placed in the fitting portions (8) and (28), and the batteries (1) in the same row are connected in parallel with the lead plate (4), so that the adjacent battery (1 ) In series,
    Furthermore, the lead plate (4) has a connecting portion (4X) protruding from the insulating holders (2) and (22), and this connecting portion (4X) is arranged in parallel with the insulating holders (2) and (22). A battery pack connected to the circuit board (5).
  2. The first end holding block (3A) and the second end holding block (3B) have holding portions (6) for storing the batteries (1) in odd rows, and the first end holding block (3A ) And the end plate (7) of the second end holding block (3B) are connected to the fitting portion (8A) of the one-row lead plate (4A) connected to the one-row battery (1) and two rows. It has a fitting part (8B) for the two-row lead plate (4B) connected to the battery (1),
    In addition, a partition wall (11) for fitting the lead plate (4) is provided along the boundary portion of the first row lead plate (4A) and the second row lead plate (4B) and on both sides thereof. The assembled battery according to claim 1, wherein the space is used as a fitting portion (8) of the lead plate (4).
  3.   The first end holding block (3A) and the second end holding block (3B) are provided with fitting recesses (14) for guiding the connecting portion (4X) of the lead plate (4) at both upper and lower ends. The assembled battery according to claim 2.
  4. The first end holding block (23A) and the second end holding block (23B) have holding portions (26) for storing the batteries (1) in even rows, and the first end holding block (23A ) And the end plate (27) of the second end holding block (23B) are connected to the fitting portion (28) of the one-row lead plate (4A) connected to the one-row battery (1) and to the two rows. It has a fitting part (28) for the two-row lead plate (4B) connected to the battery (1),
    Furthermore, a fitting recess (34) for guiding the connecting portion (4X) of the first row lead plate (4A) and the second row lead plate (4B), and an end for fitting the opposite end of the connecting portion (4X). The assembled battery according to claim 1, wherein the part fitting part (36) serves as a fitting part (28) of the lead plate (4).
  5.   The first end holding block (3A), (23A) and the second end holding block (3B), (23B) project outwardly from the top and bottom to provide connecting projections (15), (35) The connecting projections (15) and (35) are connected to connect the first end holding blocks (3A) and (23A) and the second end holding blocks (3B) and (23B). The assembled battery according to claim 1, which is connected.
JP2006276910A 2006-10-10 2006-10-10 Battery pack Ceased JP2008097942A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006276910A JP2008097942A (en) 2006-10-10 2006-10-10 Battery pack

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Publication Number Publication Date
JP2008097942A true JP2008097942A (en) 2008-04-24

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010014855A2 (en) * 2008-07-30 2010-02-04 Chaz Haba Power cell apparatus with three dimensional interconnect
JP2010160930A (en) * 2009-01-07 2010-07-22 Mitsubishi Motors Corp Voltage detection device for secondary battery
JP2010225338A (en) * 2009-03-21 2010-10-07 Sanyo Electric Co Ltd Battery pack
JP2011076841A (en) * 2009-09-30 2011-04-14 Hitachi Ltd Battery module
JP2011159474A (en) * 2010-01-29 2011-08-18 Sanyo Electric Co Ltd Battery pack
JP2013051142A (en) * 2011-08-31 2013-03-14 Hitachi Maxell Energy Ltd Battery unit
WO2013054727A1 (en) * 2011-10-13 2013-04-18 株式会社ケーヒン Power supply control device
JP2013196907A (en) * 2012-03-19 2013-09-30 Toyota Motor Corp Power storage device
JP2016505205A (en) * 2013-04-29 2016-02-18 エルジー・ケム・リミテッド Battery modules included in automotive battery packs
JP2018519651A (en) * 2015-07-21 2018-07-19 エルジー・ケム・リミテッド Battery module with structure in which terminal plate and BMS are directly connected
WO2020031576A1 (en) * 2018-08-10 2020-02-13 本田技研工業株式会社 Battery module and battery pack

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JPH097564A (en) * 1995-04-18 1997-01-10 Japan Storage Battery Co Ltd Battery holder
JP2006100148A (en) * 2004-09-30 2006-04-13 Sanyo Electric Co Ltd Battery pack
JP2006216471A (en) * 2005-02-04 2006-08-17 Sanyo Electric Co Ltd Battery pack

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH097564A (en) * 1995-04-18 1997-01-10 Japan Storage Battery Co Ltd Battery holder
JP2006100148A (en) * 2004-09-30 2006-04-13 Sanyo Electric Co Ltd Battery pack
JP2006216471A (en) * 2005-02-04 2006-08-17 Sanyo Electric Co Ltd Battery pack

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010014855A3 (en) * 2008-07-30 2010-04-01 Chaz Haba Power cell apparatus with three dimensional interconnect
WO2010014855A2 (en) * 2008-07-30 2010-02-04 Chaz Haba Power cell apparatus with three dimensional interconnect
JP2010160930A (en) * 2009-01-07 2010-07-22 Mitsubishi Motors Corp Voltage detection device for secondary battery
JP2010225338A (en) * 2009-03-21 2010-10-07 Sanyo Electric Co Ltd Battery pack
JP2011076841A (en) * 2009-09-30 2011-04-14 Hitachi Ltd Battery module
JP2011159474A (en) * 2010-01-29 2011-08-18 Sanyo Electric Co Ltd Battery pack
JP2013051142A (en) * 2011-08-31 2013-03-14 Hitachi Maxell Energy Ltd Battery unit
US9559509B2 (en) 2011-10-13 2017-01-31 Keihin Corporation Power supply control device
WO2013054727A1 (en) * 2011-10-13 2013-04-18 株式会社ケーヒン Power supply control device
JPWO2013054727A1 (en) * 2011-10-13 2015-03-30 株式会社ケーヒン power control device
JP2013196907A (en) * 2012-03-19 2013-09-30 Toyota Motor Corp Power storage device
JP2016509744A (en) * 2013-04-29 2016-03-31 エルジー・ケム・リミテッド Inner case for battery module assembly included in battery pack for automobile
JP2016505205A (en) * 2013-04-29 2016-02-18 エルジー・ケム・リミテッド Battery modules included in automotive battery packs
JP2018519651A (en) * 2015-07-21 2018-07-19 エルジー・ケム・リミテッド Battery module with structure in which terminal plate and BMS are directly connected
US10608292B2 (en) 2015-07-21 2020-03-31 Lg Chem, Ltd. Battery module having structure in which battery management system is directly connected to terminal plates
WO2020031576A1 (en) * 2018-08-10 2020-02-13 本田技研工業株式会社 Battery module and battery pack

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