JP2021077650A - Battery connection module - Google Patents

Abstract

To provide a battery connection module, specifically a battery connection module for modularizing and connecting battery packs.SOLUTION: A battery connection module 100' includes: a plurality of bus bars; two cross shaped bus bars 9; a flexible circuit board 3; an electrode unit 4; and an electrical connection bar 5'. Each cross shaped bus bar includes: a first bus bar section adapted to eclectically connect a first battery pack 202; a second bus bar section adapted to eclectically connect a second battery pack 203; and a bridge section to be connected between the first and second bus bar sections. The flexible circuit board 3 includes an extension arm and a temperature sensor provided to the extension arm, and the bus bars are formed with recessed portions for correspondingly receiving the temperature sensor. The electrode unit includes: an electrode plate 41' connected to the bus bars while being overlaid on the bus bars; an electrode plate holder 43' for holding the electrode plate; and an electrical connection socket 42 provided to the electrode plate.SELECTED DRAWING: Figure 13

Description

The present invention relates to a battery connection module, and more particularly to a battery connection module for modularizing and connecting a battery pack.

Patent Document 1 discloses only the structure of the foldable bus bar portion of the bus bar.

Patent Document 2 discloses a temperature sensor attached to a bus bar and fixed in a concave hole of the bus bar. However, it is necessary to separately connect the temperature sensor and the circuit board by wire or wiring. Therefore, the structure and manufacturing tend to be complicated, and the wire connection structure is easily damaged.

Patent Document 3 discloses a bus bar fixed to a cleat at an end of a battery module via a relay base. Since the connection between the bus bar and the cleat at the end of the battery module is via a relay base separately, it is necessary to have a structure in which the three parties are engaged with each other to assemble, so that the structure is complicated and unstable.

Patent Document 4 discloses that the first conductor and the second conductor are electrically connected by a connector, and the fastening structure portion of the connector is similar to that of the present application, but the connectors are quickly and quickly connected to each other. Further innovation is needed to improve alignment coupling. Further, the first conductor and the second conductor are not connected to the bus bar of the battery.

U.S. Pat. Nos. US8,879,262 (corresponding to Chinese invention patent application CN201000048799.1) China Utility Model Registration Bulletin CN206806468U China Utility Model Registration Bulletin CN206742231U (corresponding to Chinese Patent Publication CN1070461214A) US Patent Publication US2018 / 0287270A1 (corresponding to Chinese Invention Patent Publication CN108695602A)

Therefore, one object of the present invention is to provide a battery connection module that can improve at least one drawback in the prior art.

Therefore, the battery connection module of the present invention is applied in some embodiments to connect the first battery pack and the second battery pack that are parallel to each other, and the battery connection module Includes a carrier tray, multiple busbars, and two cross-type busbars. The plurality of busbars are assembled in the carrier tray, one of which applies to electrically connecting the first battery pack, and the other part of which is the second battery pack. Applies to electrical connections. The two cross-type busbars are assembled to the carrier tray, and each of the first busbar section applied to electrically connect the first battery pack and the second battery pack are electrically connected. It has a second busbar section that applies to the connection, and a bridge section that connects the first busbar section and the second busbar section.

In some embodiments, the first busbar section, the second busbar section, and the bridge section of each cross-type busbar are formed in an integral structure.

In some embodiments, each bridge section is folded into a multi-layer structure to reduce width.

In some embodiments, the carrier tray is provided with an accommodating portion, which is used to accommodate the bridge sections of the plurality of cross-type busbars arranged one above the other.

In some embodiments, a bridge section holder is further included, the bridge section holder being fixed to a holding end and an end plate that hold the bridge section of one of the cross-type busbars in the carrier tray. It has a fixed end that applies in particular.

In some embodiments, the accommodating portion is provided with holding posts that penetrate the bridge section and the bridge section holder.

In some embodiments, an insulating layer is laid on the surface of a bridge section in which the two cross-type busbars are placed on top of each other.

In some embodiments, an insulating layer is covered on the surface of the holding end of the bridge section holder.

In some embodiments, the accommodating section is located at a different height so as to support and accommodate the bridge sections in which a part of the two cross-type busbars are staggered and overlapped. It has a stepped portion and a second stepped portion.

Therefore, the battery connection module according to the present invention includes, in some embodiments, a carrier tray, a plurality of busbars, and a flexible circuit board. The plurality of bus bars are assembled in the carrier tray. The flexible circuit board is provided on the main body provided on the carrier tray, an extending arm extending from the main body toward the bus bar, and electrically provided on the extending arm and electrically connected to the wiring of the flexible circuit board. The bus bar includes a temperature sensor to be connected, and the bus bar is formed with a recess correspondingly accommodating the temperature sensor.

In some embodiments, the flexible circuit board further includes an attachment plate attached to the extending arm and the busbar so as to secure the extending arm to the busbar.

In some embodiments, the attach plate is attached to the surface of the extending arm on the opposite side of the temperature sensor.

In some embodiments, the recesses of the bus bar are filled with a thermally conductive filler that covers the temperature sensor.

In some embodiments, the busbar has an extending tab that extends along the direction of the corresponding extending arm, the recess being formed in the extending tab.

Therefore, the battery connection module according to the present invention includes, in some embodiments, a carrier tray, a plurality of bus bars, and an electrode unit. The carrier tray is formed with a storage groove. The plurality of bus bars are assembled in the carrier tray. The electrode unit is superposed and connected to one of the bus bars, and includes an electrode plate, an electrical connection socket, and a holder for the electrode plate, and the electrode plate is installed in a storage groove of the carrier tray and corresponds to it. The electrical connection socket is provided on the electrode plate, and the holder for the electrode plate is applied to the holding end portion for holding the electrode plate on the carrier tray and to be fixed to the end plate. Has a fixed end.

In some embodiments, the holding end of the electrode plate holder is arranged so as to overlap the upper surface of the electrode plate.

In some embodiments, an insulating layer is provided on the surface of a portion where the holding end portion of the electrode plate holder and the electrode plate are arranged so as to overlap each other.

In some embodiments, an insertion frame is installed in the accommodating groove, and the holding end portion of the electrode plate holder is inserted corresponding to the insertion frame.

In some embodiments, the electrode plate is formed with an opening through which the corresponding insertion frame penetrates.

In some embodiments, the accommodating groove is provided with a locking hook for locking the electrode plate.

In some embodiments, the accommodating groove is provided with a holding block, the end of the electrode plate is inserted below the corresponding holding block, and the holding end of the electrode plate holder is assembled to the holding block. Has been done.

In some embodiments, a position limiting groove for accommodating the end of the electrode plate is formed below the holding block, and the holding block corresponds to the holding end of the electrode plate holder. A slot for accommodating is formed.

In some embodiments, an interference protrusion that interferes with the slot is formed on the side edge of the holding end of the electrode plate holder.

Therefore, the battery connection module according to the present invention includes, in some embodiments, a carrier tray, a plurality of bus bars, an electrode unit, and an electrical connection bar. The plurality of bus bars are assembled in the carrier tray. The electrode unit is superposed and connected to one of the bus bars and includes an electrode plate and an electrical connection socket, and the electrode plate is installed on the carrier tray and superposed and connected to the corresponding bus bar and the electrode. The plate and the bus bar are made of different metal materials, the electric connection socket is provided on the electrode plate, and the electric connection socket is provided on the first conductive ring provided on the electrode plate and the electrode plate. It also has a sleeve that penetrates the first conductive ring and a housing that is provided on the electrode plate and is located on the outer periphery of the first conductive ring, and the housing has a first alignment structure and a first. The anchoring structure of is formed. The electrical connection bar includes a conductive bar and an electrical connection plug that is installed at the end of the conductive bar and for corresponding coupling with the electrical connection socket, and the electrical connection plug is superposed on the end of the conductive bar. An upper casing that is assembled together with a conductive block that is connected and has a through hole formed, a second conductive ring provided in the conductive block corresponding to the through hole, and accommodates the second conductive ring together. And the lower casing, including a fastener inserted into the through hole of the conductive block and the second conductive ring and movably positioned between the conductive block and the upper casing. Corresponds to the insertion portion located on the outer periphery of the second conductive ring, the second alignment structure that fits corresponding to the first alignment structure, and the first engagement structure. A second engaging structure to be fitted is integrally formed, and after the electrical connection plug and the electrical connection socket are correspondingly coupled, the insertion portion is inserted into the housing and the connection portion is inserted. The fastener is assembled to the sleeve, and the first conductive ring and the second conductive ring are in contact with each other so as to electrically connect the electrode plate and the conductive bar.

In some embodiments, the second alignment structure of the electrical connection plug comprises a plurality of alignment blocks, the second engagement structure comprises a plurality of engagement plates, and the plurality of alignments. The blocks and the plurality of anchoring plates are alternately installed on the outer periphery of the insertion portion, and the first alignment structure of the electrical connection socket respectively accommodates the plurality of alignment blocks correspondingly. The first anchoring structure includes a plurality of alignment holes for the purpose, and each of the first anchoring structures includes a plurality of anchoring blocks for engaging with the anchoring plate.

In some embodiments, the fastener is an insulating head portion whose position is restricted between the conductive block and the upper casing, an insulating tail portion on the opposite side of the insulating head portion, and the insulating head portion. It has a male threaded portion located between and the insulating tail portion, the upper casing has an opening for exposing the insulating head portion, and the sleeve is screwed corresponding to the male threaded portion of the fastener. It has a female threaded hole for wearing, and the electrical connection socket further has an insulating guard ring assembled over the upper end opening of the sleeve.

In some embodiments, an installation hole is formed in the electrode plate, the first conductive ring of the electrical connection socket is inserted corresponding to the installation hole, and the sleeve is the first conductive ring. It is inserted corresponding to the inside.

In some embodiments, the first conductive ring of the electrical connection socket and the electrode plate are formed in an integral structure, and the sleeve is inserted correspondingly in the first conductive ring. ..

In some embodiments, the conductive bar has a conductive portion made of a multilayer copper material, and the conductive block of the electrical connection plug is a solid copper material.

In some embodiments, the plurality of busbars are made of aluminum and the electrode plates are made of solid copper.

The battery connection module according to the present invention is a welding dot or connection configured to connect two battery packs in series in the conventional technique by directly cross-connecting two battery packs by a cross-type bus bar having an integrated structure. Contact point is omitted. The bridge section is narrowed in the width direction and folded into a multi-layer structure so that the width can be reduced for easier installation and at the same time a large current can be loaded. In addition, the temperature sensor that is electrically connected to the wiring of the flexible circuit board is directly fixed to the extension arm of the flexible circuit board, and by arranging it directly in the recess of the bus bar, it is easy and easy to assemble. Moreover, the temperature detection becomes more direct. Further, in order to prevent misalignment or vibration of the electrode plate, the electrode plate holder provides a stronger proof stress strength (torque or force in another direction) to the electrode plate. Further, the fastening structure, the alignment structure, and the fastener and the sleeve provided between the electric connection plug and the electric connection socket provide a quick and aligned connection between the electric connection plug and the electric connection socket. Can be done. Further, by superimposing and connecting the electrode plates to the bus bars made of different metal materials, the welding performance of each member is improved, the conductivity is improved, and the heat storage is reduced.

Other features and technical effects of the present invention will be articulated in embodiments with reference to the drawings.

It is a perspective view of the 1st Example of the battery connection module which concerns on this invention. It is an exploded perspective view of FIG. 1, and the electrical connection bar is not shown. It is an exploded perspective view of FIG. It is a partial exploded perspective view explaining the concave part of the bus bar and the temperature sensor of a flexible circuit board in the 1st Example. It is a partial perspective view explaining the accommodating groove of the carrier tray and the electrode unit in the 1st Example. It is a top view of the first embodiment, and the upper cover in the first embodiment is not shown. FIG. 6 is a cross-sectional view taken along the line VII-VII in FIG. It is a perspective view explaining the electrical connection plug of the electrical connection bar and the electrical connection socket of the electrode unit in the first embodiment. FIG. 8 is an exploded perspective view of FIG. It is a top view explaining that the electric connection plug of the electric connection bar in the 1st Example is coupled to the electric connection socket of an electrode unit. FIG. 5 is a cross-sectional view taken along the line XI-XI in FIG. It is a partial exploded perspective view explaining the protection pad and the fixture of the electric connection bar in the 1st Example. It is a perspective view of the 2nd Example of the battery connection module which concerns on this invention. It is an exploded perspective view of FIG. It is a partial perspective view explaining that the bridge part of the bridge type bus bar in the 2nd Example is provided in the accommodating part of a carrier tray. It is an exploded perspective view of a part of FIG. It is a perspective view explaining the bridge type bus bar in the 2nd Example. FIG. 17 is a perspective view of FIG. 17 viewed from another angle. It is a partial exploded perspective view explaining the electrode unit in the 2nd Example. It is a further partial exploded perspective view based on FIG. It is an exploded perspective view explaining the electrical connection bar in the 2nd Example. It is an exploded perspective view explaining the electrode unit in the modification. It is a top view explaining the electrode unit in the said modification. FIG. 2 is a cross-sectional view taken along the line XXIV-XXIV in FIG. 23. It is a perspective view explaining the electrode plate of the electrode unit in the said modification. It is a perspective view explaining the power-feeding apparatus which the said 1st Example and 2nd Example and the battery pack are attached to the lower base. FIG. 26 is an exploded perspective view of FIG. 26.

100 Battery connection module 100'Battery connection module 1 Carrier tray 1'Carrier tray 11 Lower position limit rib 12 Upper position limit block 13 Upper position limit hook 14 Positioning post 15 Storage recess 16 Mounting pedestal 161 Locking hook 17 Storage groove 17' Groove 171 Holding block 171a Slot 172 Position limiting groove 173 Insertion frame 174 Locking hook 18 Alignment protrusion 19 Engagement protrusion 110 Accommodating part 1101 First step part 1102 Second step part 1103 Holding post 2 Bus bar 21 Electrode connection part 22 Swelling buffer 23 Extension tab 231 Recess 24 Stacked connection 3 Flexible circuit board 31 Main body 311 Positioning hole 312 Folded shock absorber 313 Upper bent part 32 Extended arm 33 Temperature sensor 34 Attach plate 35 Voltage acquisition plate 4 Electrode unit 41 Electrode plate 41'Electrode plate 410 Insertion convex part 411 Opening 412 Insulation layer 413 Installation hole 42 Electrical connection socket 421 First conductive ring 422 Sleeve 422a Female screw hole 422b Outer ring surface 422c Lower flange 422d Latch 423 Housing 424 First alignment Structure 424a Alignment hole 425 First fastening structure 425a Fastening block 426 Insulation guard ring 43 Electrode plate holder 43'Electrode plate holder 431 Holding end 432 Fixed end 433 Insulation layer 44 Protective cover 441 Cover body 442 No. 2 Engagement structure 5 Electrical connection bar 5'Electrical connection bar 51 Conductive bar 511 Conductive part 512 Insulated outer layer 52 Electrical connection plug 521 Conductive block 521a Through hole 522 Second conductive ring 523 Upper casing 523a Opening 523b Engagement hole 524 Below Casing 524a Engagement block 525 Fastener 525a Insulation head part 525b Insulation tail part 525c Male thread part 526 Insertion part 527 Second alignment structure 527a Alignment block 528 Second engagement structure 528a Engagement plate 528b Engagement recess 53 Protective pad 54 Fixture 541 Belt part 542 Fixing part 6 Top cover 61 Alignment groove 62 Engagement hole 63 Connection socket opening 64 Connector opening 7 Electric connection Battery 70 Engagement groove 71 Pin 72 Protective cover 8 Back plate 9 Cross type bus bar 91 First bus bar section 92 Second bus bar section 93 Bridge section 94 Insulation layer 10 Bridge section holder 101 Holding end 102 Fixed end 103 Insulation Layer 20 Battery pack 201 Battery 202 First battery pack 203 Second battery pack 30 Battery storage case 301 End plate 302 Protective frame 200 Power supply device 200a Lower base D1 Length direction D2 Width direction D3 Vertical direction

Before describing the present invention in detail, it should be noted that similar elements are designated by the same reference numerals in the following description.

See FIGS. 1 to 3. The battery connection module 100 in the first embodiment according to the present invention is applied to be electrically connected to the battery pack 20, and the battery pack 20 is a plurality of batteries 201 (in the first embodiment, the present invention). The battery pack 20 is housed in the battery housing case 30 together with the protective frames 302 installed at the two ends, and the battery housing cases 30 are located at both ends. It has an end plate 301. The battery connection module 100 includes a carrier tray 1, a plurality of bus bars 2, a flexible circuit board 3, two electrode units 4, two electrical connection bars 5, and an upper cover 6.

The carrier tray 1 extends along the length direction D1 and is applied to be installed in the battery pack 20, and is manufactured of an insulating material. The plurality of bus bars 2 are divided into two rows along the width direction D2 perpendicular to the length direction D1 and assembled to the carrier tray 1, and are attached to the battery 201 for electrically connecting the battery pack 20. Applies. In the first embodiment, each bus bar 2 is connected to a plurality of electrode connecting portions 21 applied to be connected to the electrodes of the battery 201, and is connected between the adjacent electrode connecting portions 21 and the length direction D1. Along the vertical direction D3 perpendicular to the width direction D2, the plurality of swelling cushioning portions 22 have a plurality of swelling cushioning portions 22 that bulge in a direction away from the carrier tray 1. The carrier tray 1 extends along the width direction D2, and the carrier tray 1 includes a plurality of lower position limiting ribs 11 supported below the swelling buffer 22 of the bus bar 2, and a plurality of lower position limiting ribs 11 located above the bus bar 2. The position of the bus bar 2 is limited by the lower position limiting rib 11, the upper position limiting block 12, and the upper position limiting hook 13, including the upper position limiting block 12 and the plurality of upper position limiting hooks 13.

4 and 5 are also referred to. The flexible circuit board 3 includes a main body 31 provided on the carrier tray 1 and located between two rows of bus bars 2, a plurality of extending arms 32 extending from the main body 31 toward the bus bar 2, and the extension. The bus bar 2 includes a plurality of temperature sensors 33 (for example, NTC thermistor (Negative Temperature Coefficient thermistor)) provided on the arm 32 and electrically connected to the wiring of the flexible circuit board 3. Further, the extension tab 23 extending in the direction of the corresponding extension arm 32 is further provided, and the temperature sensor 33 is correspondingly accommodated on the top surface at the end edge of the extension tab 23 of the bus bar 2. Although the recess 231 is formed, in one modification, the bus bar 2 does not have the extending tab 23 and the recess 231 may be formed directly, and in the other modification, the recess 231 is a blind hole. In the first embodiment, the flexible circuit board 3 further includes a plurality of attachment plates 34, and the plurality of attachment plates 34 may be made of nickel as an example. Often, the plurality of attachment plates 34 are attached to the surface of the extending arm 32 on the side opposite to the temperature sensor 33 and the surface of the extending arm 32 by a method such as welding so as to fix the extending arm 32 to the bus bar 2, for example. Further, the recess 231 of the bus bar 2 may be filled with a heat conductive filler (not shown) that covers the temperature sensor 33, and the heat conductive filler is used as an example. It may be a heat conductive rubber or the like, and the heat conductive filler can contribute to transferring the heat energy on the bus bar 2 to the temperature sensor 33, but the present invention is not limited to this. Assembling is easy and easy by directly fixing the temperature sensor 33 electrically connected to the wiring to the extending arm 32 of the flexible circuit board 3 and arranging it directly in the recess 231 of the bus bar 2. Moreover, the temperature detection becomes more direct, and by attaching the attach plate 34 to the extending arm 32 and the bus bar 2, the fixation between the extending arm 32 and the bus bar 2 can be strengthened.

In the first embodiment, the main body 31 of the flexible circuit board 3 has a plurality of positioning holes 311 and a plurality of bends that are recessed downward along the vertical direction D3 and extend along the width direction D2. A cushioning portion 312 and an upper bent portion 313 that bends upward along the vertical direction D3 are further formed, and the carrier tray 1 has a plurality of positioning posts 14 inserted into the plurality of positioning holes 311. Further, it further has a plurality of accommodating recesses 15 accommodating the plurality of bent cushioning portions 312, and a mounting pedestal 16 adjacent to the upper bent portion 313. The plurality of positioning posts 14 can fix the flexible circuit board 3 by heat welding the ends to the enlarged head. The battery connection module 100 further includes an electric connector 7 and a back plate 8 provided in the upper bent portion 313 by electrical connection. The mounting pedestal 16 is formed with two locking hooks 161 facing each other along the length direction D1, and the electric connector 7 is locked to the mounting pedestal 16 and the mounting pedestal 16 is said to be the same. The two engaging grooves 70 that engage corresponding to the locking hook 161 are located on the rear side so as to be electrically connected to the wiring of the flexible circuit board 3, and are inserted into the upper bent portion 313. The back plate 8 is fixed to the pin 71 so as to strengthen the fixing holding force between the electric connector 7 and the upper bent portion 313, and the electric connector 8 is fixed to the pin 71. The upper bent portion 313 is sandwiched together with 7. Further, the flexible circuit board 3 is electrically connected to the main body 31, and has a plurality of voltage acquisition plates 35 that are in contact with the plurality of bus bars 2 in order to acquire voltage information of the plurality of bus bars 2. Have more. The temperature sensor 33 and the voltage acquisition plate 35 of the flexible circuit board 3 can collect the state information (for example, temperature, voltage, etc.) of the battery pack 20, and are electrically connected to the flexible circuit board 3. The electric connector 7 can transmit the state information to a battery management device (not shown) that is coupled to the electric connector 7. The electrical connector 7 further has a protective cover 72 to protect the electrical connector 7 when the electrical connector 7 is not coupled to the device.

See FIGS. 3, 5 and 7. The carrier tray 1 is formed with two accommodating grooves 17 located at both ends in the length direction D1, a holding block 171 is provided in each accommodating groove 17, and a position limiting groove 172 is provided below the holding block 171. Is formed. The two electrode units 4 are superposed and connected to two of the bus bars 2, and each electrode unit 4 includes an electrode plate 41, an electrical connection socket 42, and an electrode plate holder 43. The electrode plate 41 is installed in the corresponding accommodating groove 17 of the carrier tray 1 and is overlapped and connected to the overlapping connection portion 24 composed of the corresponding bus bars 2, and the insertion convex portion 410 having a tab structure is connected to the end of the electrode plate 41. Is formed, and the insertion convex portion 410 is inserted into the position limiting groove 172 below the corresponding holding block 171 so as to be accommodated in the position limiting groove 172. The electrical connection socket 42 is provided on the electrode plate 41, and the electrode plate holder 43 is assembled to the corresponding holding block 171 so as to indirectly hold the corresponding electrode plate 41 on the carrier tray 1. It has a holding end portion 431 and a fixed end portion 432 fixed to an adjacent end plate 301 by, for example, a welding method. Each holding block 171 is formed with a slot 171a for accommodating the holding end 431 of the corresponding electrode plate holder 43. On both side edges of the holding end 431 of each electrode plate holder 43, a plurality of interference protrusions that interfere with the slot 171a are formed in order to strengthen the fixed holding force between the electrode plate holder 43 and the slot 171a. Has been done. In order to prevent misalignment or vibration of the electrode plate 41, the electrode plate holder 43 provides a stronger proof stress strength (torque or force in another direction) to the electrode plate 41.

8 to 11 will be referred to. The electric connection socket 42 is provided on the electrode plate 41, and the electric connection socket 42 is provided on the first conductive ring 421 provided on the electrode plate 41 and the first conductive ring 41. It has a sleeve 422 that penetrates the ring 421, and a housing 423 that is provided on the electrode plate 41 and is located on the outer periphery of the first conductive ring 421. In the first embodiment, the first conductive ring 421 and the electrode plate 41 have an integral structure, but the combination may be divided into two, and the present invention is not limited to this. The sleeve 422 penetrates the electrode plate 41 and is inserted correspondingly in the first conductive ring 421. The housing 423 is formed with a first alignment structure 424 and a first engagement structure 425. The electrical connection bar 5 includes a conductive bar 51 and two electrical connection plugs 52 that are installed at two ends of the conductive bar 51 and are correspondingly coupled to the electrical connection socket 42. Each of the electrical connection plugs 52 is a conductive block 521 in which a through hole 521a is formed while being overlapped with the end of the conductive bar 51, and a second conductive block 521 corresponding to the through hole 521a. 522, the upper casing 523 and the lower casing 524 which are assembled with each other to accommodate the second conductive ring 522 and the conductive block 521, the through hole 521a of the conductive block 521, and the second conductive ring 522. The second conductive ring 522 and the conductive block 521 include a fastener 525 that is inserted into and movably restricted between the conductive block 521 and the upper casing 523. Although the structure is integrated in the above embodiment, it may be a combination of two divisions and is not limited to this. The upper casing 523 and the lower casing 524 may be made of an insulating material, and in the first embodiment, the upper casing 523 is formed with a plurality of engaging holes 523b at the side edges, and the lower casing is formed. A plurality of engaging blocks 524a to be engaged corresponding to the engaging hole 523b are formed in the 524, whereby the upper casing 523 and the lower casing 524 are engaged so as to be assembled with each other. The lower casing 524 includes an insertion portion 526 located on the outer periphery of the second conductive ring 522, a second alignment structure 527 that is fitted corresponding to the first alignment structure 424, and the second alignment structure 527. A second fastening structure 528 that is fitted corresponding to the first fastening structure 425 is integrally formed, and after the electrical connection plug 52 and the electrical connection socket 42 are correspondingly coupled to each other, the electrical connection plug 52 and the electrical connection socket 42 are correspondingly coupled to each other. The first conductive ring 421 and the second conductive ring 522 are in contact with each other, and the electrode plate 41 of the electrode unit 4 is electrically connected to the conductive bar 51 of the electrical connection bar 5. The portion 526 is inserted into the housing 423 and the fastener 525 is assembled to the sleeve 422. The electrode plate 41 and the bus bar 2 are made of different metal materials. In the first embodiment, the material of the electrode of the battery 201 of the battery pack 20 is aluminum so that the bus bar 2 can be easily welded to the electrode of the battery 201 of the battery pack 20, and the bus bar 2 is made of aluminum. Although it is a plate, as an example, the bus bar 2 may have a multi-layer aluminum structure. The electrode plate 41 which is superposed and connected to the bus bar 2 so as to improve the conductivity of the electrode plate 41 is a solid copper material, and the electrode plate 41 whose material is copper is preferable in heat. It has conductive performance and can further reduce heat storage. The conductive bar 51 has a conductive portion 511 to which the conductive block 521 is overlapped and connected, and an insulating outer layer 512 coated on the outside of the conductive portion 511, and the conductive portion 511 is made of multilayer copper. The conductive block 521 of the electrical connection plug 52 is made of a solid copper material so that the conductive bar 51 is more easily bent by the conductive portion 511 made of multilayer copper to improve conductivity and reduce heat storage. This improves the welding performance of each member, improves the conductivity, and reduces the heat storage. However, in another modified embodiment, the bus bar 2, the electrode plate 41, the conductive portion 511 of the conductive bar 51, and the conductive block 521 of the electrical connection plug 52 may be made of another metal material, and the conductive block 521 may be made of another metal material. It is not limited to.

The second alignment structure 527 of the electrical connection plug 52 includes four alignment blocks 527a, and the second engagement structure 528 includes four engagement plates 528a, each having an engagement recess 528b. .. The alignment block 527a and the engagement plate 528a are alternately installed on the outer periphery of the insertion portion 526 in order. The first alignment structure 424 of the electrical connection socket 42 includes a plurality of alignment holes 424a for accommodating the alignment block 527a correspondingly, and the first engagement structure 425 respectively includes the alignment holes 424a. Includes a plurality of anchoring blocks 425a for engaging corresponding to the anchoring recess 528b of the anchoring plate 528a. The fastener 525 includes an insulating head portion 525a whose position is restricted between the conductive block 521 and the upper casing 523, an insulating tail portion 525b on the opposite side of the insulating head portion 525a, and the insulating head portion 525a. It has a male threaded portion 525c located between the insulating tail portion 525b and the insulating tail portion 525b, and in the first embodiment, the insulating head portion 525a and the insulating tail portion 525b are injection-coated with an insulating material. It is formed on the fastener 525 by law. The upper casing 523 has an opening 523a that exposes the insulating head portion 525a, and the sleeve 422 is located outside the female screw hole 422a for screwing in correspondence with the male screw portion 525c of the fastener 525. It also has an outer ring surface 422b having a tapered shape with a narrow upper part and a wide lower part, a lower flange 422c located at the bottom and wide, and a plurality of latches 422d adjacent to the lower flange 422c. The outer ring surface 422b makes it easier for the sleeve 422 to be pushed into the first conductive ring 421 from below, and the lower flange 422c can be tightly joined to the inner wall surface of the first conductive ring 421. , The plurality of latches 422d can be brought into contact with the lower part of the first conductive ring 421, and the plurality of latches 422d are said to improve the fixing holding force between the sleeve 422 and the first conductive ring 421. It interferes with the lower part of the inner wall surface of the first conductive ring 421 and can be engaged. The electrical connection socket 42 is assembled to the upper end opening of the sleeve 422 and further has an insulating guard ring 426 which is an insulating material, and is used by the insulating head portion 525a, the insulating tail portion 525b, and the insulating guard ring 426. It is possible to prevent a person from getting an electric shock in the process of connecting the electric connection plug 52 and the electric connection socket 42. Then, the electrical connection plug 52 and the electrical connection socket 42 are quickly and positioned by the engagement structure and the alignment structure provided between the electrical connection plug 52 and the electrical connection socket 42, and the fastener 525 and the sleeve 422. Can be combined and combined. Further, the electrode unit 4 further includes a protective cover 44 provided to cover the electrical connection socket 42, and the protective cover 44 includes a cover body 441 for covering the electrical connection socket 42 and the cover body 441. The protective cover 44 has a second fastening structure 442 that extends from the cover body 441 and is substantially the same as the second fastening structure 528 structure of the electrical connection plug 52. The attachment structure 442 of 2 can be attached to the first attachment structure 425 so that the protective cover 44 is provided to cover the electric connection socket 42, whereby the electric connection socket 42 can be attached. When not connected to the electrical connection plug 52, it can be covered and protected by the protective cover 44. In addition, FIGS. 1 and 12 are also referred to. In the first embodiment, each of the electrical connection bars 5 is provided on the plurality of protective pads 53 formed on the insulating outer layer 512 and the plurality of protective pads 53 in order to strengthen the fixation of the conductive bar 51. Further having the plurality of fixtures 54, each fixture 54 is inserted into or sandwiched between the belt portion 541 fitted to the plurality of protective pads 53 and the frame of the housing. By fixing the conductive bar 51 of the electric connection bar 5 at an appropriate position by the plurality of fixing tools 54, the conductive bar 51 of the electric connection bar 5 is caught by another object. It is possible to prevent it from being pulled.

Refer to FIG. 1 to FIG. 3 again. The carrier tray 1 is formed with a plurality of alignment protrusions 18 and a plurality of engagement protrusions 19 located on both side edges in the width direction D2, and in the first embodiment, the respective side edges are formed. Two alignment protrusions 18 are provided, the alignment protrusions 18 have an inverted L shape so as to be aligned with the edges of the battery pack 20, and the alignment protrusions 18 located on both side edges are in the width direction D2. Two are out of alignment with each other. The upper cover 6 is provided so as to cover above the carrier tray 1, and the upper cover 6 is provided with a plurality of alignment grooves 61 through which the plurality of alignment protrusions 18 correspond to extend. A plurality of engagement holes 62 to which the plurality of engagement projections 19 correspond to each other, two connection socket openings 63 corresponding to the plurality of electrical connection sockets 42, and a connector opening corresponding to the electrical connector 7. 64 and are formed. By fitting the plurality of alignment protrusions 18 and the alignment grooves 61 that are displaced from each other in the width direction D2, the user is provided to cover the upper cover 6 on the carrier tray 1 in the wrong direction. It is possible to prevent it from being lost.

See FIGS. 13-16. The difference between the battery connection module 100'in the second embodiment according to the present invention and the battery connection module 100 in the first embodiment is that in the second embodiment, each of them is parallel to each other. The battery pack 202 and the second battery pack 203 are provided, and the number of batteries 201 in the first battery pack 202 and the second battery pack 203 is 18 each. By the way. The plurality of bus bars 2 are divided into four rows substantially along the width direction D2, and two rows thereof are applied to electrically connect the first battery pack 202, and another of them. 2 rows are applied to electrically connect the second battery pack 203, the number of flexible circuit boards 3 is 2, and the first battery pack 202 is electrically connected. It corresponds to the two rows of bus bars 2 and the other two rows of bus bars 2 that electrically connect the second battery pack 203, respectively. The battery connection module 100' further includes two cross-type bus bars 9 assembled to the carrier tray 1'and two bridge section holders 10. The two cross-type bus bars 9 are assembled to the carrier tray 1', and each cross-type bus bar 9 has a first bus bar section 91 applied to electrically connect the first battery pack 202. , A second bus bar section 92 applied to electrically connect the second battery pack 203, and a bridge section 93 connected to the first bus bar section 91 and the second bus bar section 92. The bridge section 93 is reduced in width to facilitate installation and at the same time is folded into a multi-layer structure so that a large current can be loaded. Although it has a three-layer structure in the second embodiment, it may be a multi-layer structure having another number of layers, and is not limited thereto. Further, the first bus bar section 91, the second bus bar section 92, and the bridge section 93 are formed in an integral structure in the second embodiment, and two battery packs are formed by the cross-type bus bar having an integral structure. By directly cross-connecting (the first battery pack 202 and the second battery pack 203), the two battery packs (the first battery pack 202 and the second battery pack 203) in the conventional technique are connected in series. Welding dots or connecting contacts configured for this purpose are omitted. The carrier tray 1'is provided with an accommodating portion 110 located at one end thereof in the length direction D1, and the accommodating portion 110 is arranged so that a part of the two cross-type bus bars 9 is shifted and stacked vertically. It has a first step portion 1101 and a second step portion 1102 located at different heights so as to support and accommodate the bridge sections 93. The plurality of bridge section holders 10 are respectively pressed against the edges of the bridge section 93, and each bridge section holder 10 presses the bridge section 93 of the corresponding cross-type bus bar 9 so as to directly press the bridge section 93. It has a holding end 101 to be held by the carrier tray 1'and a fixed end 102 applied to be fixed to, for example, one of the adjacent end plates 301 by a welding method. The accommodating portion 110 is further provided with three holding posts 1103 inserted into the plurality of bridge sections 93 and the holding end portions 101 of the plurality of bridge section holders 10, and the plurality of cross-type bus bars 9 are provided. After assembling the bridge section 93 of the bridge section 93 and the holders 10 for the plurality of bridge sections, the end of the holding post 1103 forms an enlarged head (not shown) by a method of heat welding, whereby the plurality of bridge sections 93 are assembled. The bridge section 93 of the cross-type bus bar 9 and the plurality of bridge section holders 10 can be fixedly held. In addition, FIGS. 17 to 18 are also referred to. In the second embodiment, the insulating layer 94 is covered on the surface of the bridge section 93 in which the two cross-type bus bars 9 are arranged so as to overlap each other, and on the surface of the holding end 101 of the holder 10 for the bridge section. The insulating layer 103 is covered. As an example, the insulating layer 94 and the insulating layer 103 shown in black in the figure may be made of plastic or resin, and can be formed by a method such as thermal spraying, coating, or coating molding.

See FIGS. 19-20. The plurality of accommodating grooves 17'are formed at the other end of the carrier tray 1'on the side opposite to the location where the accommodating portion 110 is formed in the length direction D1, and are arranged along the width direction D2. Has been done. Two insertion frames 173 are installed in each accommodation groove 17', and an opening 411 through which the corresponding insertion frame 173 penetrates is formed in each electrode plate 41', and the electrode plate holder 43' The holding end portion 431 is inserted corresponding to the insertion frame 173 and is arranged so as to be directly overlapped with the upper surface of the corresponding electrode plate 41'. An insulating layer 412 and an insulating layer 433 are provided on the surface of a portion where the holding end portion 431 of the electrode plate holder 43'and the electrode plate 41' are arranged so as to overlap each other. As an example, the insulating layer 412 and the insulating layer 433 shown in black in the figure may be made of plastic or resin, and can be formed by a method such as thermal spraying, coating, or coating molding. Further, the insulating layer 412 and the insulating layer 433 may be an insulating sleeve assembled by a fitting method, but the present invention is not limited thereto. In the second embodiment, each accommodating groove 17'is further provided with a locking hook 174 that locks the corresponding electrode plate 41'in order to enhance the fixing holding force with respect to the electrode plate 41'. ..

See FIG. 21. Further, the difference between the electrical connection bar 5'in the second embodiment and the electrical connection bar 5 in the first embodiment is that the insulating head portion 525a and the insulating tail portion 525b of the electrical connection bar 5'are different from each other. Although it is provided in the fastener 525 depending on the assembly method, a structure using a coating molding method as in the first embodiment may be used. The conductive portion 511 is a solid copper material, and the cross section of the portion of the conductive portion 511 covered with the insulating outer layer 512 is circular.

See FIGS. 22-25. It should be noted that, in the modified example, the electrode plate 41'and the first conductive ring 421 are assembled, and in this modified example, the installation holes 413 are provided in the respective electrode plates 41'. The first conductive ring 421 of the formed and corresponding electrical connection socket 42 is inserted corresponding to the installation hole 413. As a result, the electrode plate 41'is assembled into two types of the first conductive ring 421 with the front side or the back side facing up (as shown in FIG. 25) so as to meet different spatial arrangement needs. be able to.

26-27. Regarding the plurality of power supply devices 200 in which the plurality of first embodiment and the second embodiment and the battery pack thereof are mounted in the housing, the lower part of the drawing can be provided in the housing of the power supply device. Only the base 200a is shown, and the battery connection modules 100, 100'and their electrical connection bars 5, 5'are provided with the first embodiment and the above so that the power supply device 200 can supply a large current according to the needs. The battery packs of the second embodiment are connected in series. It should be explained that the arrangement of the battery connection modules 100 and 100'and the battery pack and the arrangement method of the electric connection bars 5 and 5'are merely examples, and all of them can be adjusted according to the needs. Is. In addition, FIG. 1 is also referred to. The end plates 301 are both ends of the battery accommodating case 30, and in one modification, the end plates 301 do not have to be a part of the battery accommodating case 30, and are individually provided at both ends of the battery pack. In another modification, the end plate 301 may be, for example, a partition plate of the lower base 200a, for example, the lower base 200a may have a plurality of partitions so as to form a space for arranging the battery pack. A plate may be installed, and the partition plate located at the end of the battery pack can be used as the end plate described in the present disclosure.

As described above, the battery connection module 100 of the present invention has a conventional technique in which two battery packs (first battery pack 202 and second battery pack 203) are directly cross-connected by a cross-type bus bar 9 having an integrated structure. The welding dot or the contact for connection configured to connect the two battery packs (the first battery pack 202 and the second battery pack 203) in series in the above is omitted. The bridge section 93 is narrowed in the width direction D2 and folded into a multi-layer structure so that the width can be reduced to facilitate mounting and at the same time a large current can be loaded. Further, the temperature sensor 33 electrically connected to the wiring of the flexible circuit board is directly fixed to the extending arm 32 of the flexible circuit board 3, and is assembled by directly correspondingly arranging the temperature sensor 33 in the recess 231 of the bus bar 2. Is simple and easy, and temperature detection becomes more direct. Further, in order to prevent misalignment or vibration of the electrode plates 41, 41', the electrode plate holders 43, 43'provide a stronger proof stress strength (torque or force in another direction) to the electrode plates 41, 41'. ing. Further, the fastening structure, the alignment structure, the fastener 525 and the sleeve 422 provided between the electric connection plug 52 and the electric connection socket 42 allow the electric connection plug 52 and the electric connection socket 42 to be quickly and positioned. Can be combined and combined. Further, by superimposing and connecting the electrode plates 41 and 41'to the bus bar 2 made of different metal materials, the welding performance of each member is improved, the conductivity is improved, and the heat storage is reduced.

The above description is merely an embodiment of the present invention, and the scope of implementation of the present invention is not limited thereto. All simple equivalent changes and modifications made based on the claims of the invention and the contents of the specification are included in the claims of the present invention.

Claims (9)

A carrier tray with a storage groove and
Multiple busbars assembled on the carrier tray,
It is overlapped and connected to one of the bus bars, and includes an electrode plate, an electrical connection socket, and a holder for the electrode plate, and the electrode plate is installed in the accommodating groove of the carrier tray and is overlapped and connected to the corresponding bus bar. The electrical connection socket is provided on the electrode plate, and the holder for the electrode plate has a holding end portion for holding the electrode plate on the carrier tray and a fixed end portion applied to be fixed to the end plate. A battery connection module, including an electrode unit that has. The battery connection module according to claim 1, wherein the holding end portion of the electrode plate holder is arranged so as to overlap the upper surface of the electrode plate. The battery connection module according to claim 2, wherein an insulating layer is provided on the surface of a portion where the holding end portion of the electrode plate holder and the electrode plate are arranged so as to overlap each other. The battery connection module according to claim 2 or 3, wherein an insertion frame is installed in the accommodating groove, and a holding end portion of the electrode plate holder is inserted corresponding to the insertion frame. The battery connection module according to claim 4, wherein the electrode plate is formed with an opening through which the corresponding insertion frame penetrates. The battery connection module according to claim 5, wherein a locking hook for locking the electrode plate is installed in the accommodating groove. The first aspect of the present invention, wherein a holding block is provided in the accommodating groove, the end of the electrode plate is inserted below the corresponding holding block, and the holding end of the electrode plate holder is assembled to the holding block. Battery connection module. A position limiting groove for accommodating the end of the electrode plate is formed below the holding block, and a slot for accommodating the holding end of the electrode plate holder is formed in the holding block. The battery connection module according to claim 7. The battery connection module according to claim 8, wherein an interference protrusion that interferes with the slot is formed on the side edge of the holding end portion of the electrode plate holder.

Images