JP2020109741A - Battery connection module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a battery connection module, and particularly to provide a battery connection module for connecting a battery pack in a modular form. A battery connection module includes a plurality of bus bars, two cross type bus bars, a flexible circuit board, an electrode unit, and an electrical connection bar. Each cross-type bus bar has a first bus bar section that is applied to electrically connect the first battery pack and a second bus bar section that is applied to electrically connect the second battery pack. , And a bridge section connected between the both. The flexible circuit board includes an extending arm and a temperature sensor provided on the extending arm, and the bus bar is formed with a recess for accommodating the temperature sensor. The electrode unit includes an electrode plate superposedly connected to the bus bar, an electrode plate holder that holds the electrode plate, and an electrical connection socket provided on the electrode plate. The electrical connection bar has an electrical connection plug that mates with an electrical connection socket by a fastening structure, an alignment structure, a fastener and a sleeve. [Selection diagram] None

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 folding busbar portion of the busbar.

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

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

Patent Document 4 discloses a structure in which a first conductor and a second conductor are electrically connected by a connector, and a fastening structure portion of the connector is similar to that of the present application, but the connectors are fast and Further innovations are needed to improve the alignment bond. Furthermore, the first conductor and the second conductor are not connected to the bus bar of the battery.

US patent US8,879,262 (corresponding to Chinese invention patent application CN2010800487999.1) China Utility Model Registration Bulletin CN206806468U China Utility Model Registration Bulletin CN206742321U (corresponding to China Patent Publication CN1070461414A) 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 remedy at least one drawback of the prior art.

Therefore, the battery connection module of the present invention is, in some embodiments, applied to connecting a first battery pack and a second battery pack that are parallel to each other, and the battery connection module Includes a carrier tray, a plurality of bus bars, and two cross type bus bars. The plurality of busbars are assembled to the carrier tray, some of which are applied to electrically connect the first battery pack, and some of which are connected to the second battery pack. Applies to electrical connection. The two cross-type bus bars are assembled to the carrier tray, and each of the two cross-type bus bars applies a first bus bar section which is applied to electrically connect the first battery pack and an electric circuit to the second battery pack. And a bridge section connected to 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 integrally formed.

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

In some embodiments, the carrier tray is provided with an accommodating portion, and the accommodating portion is used for accommodating the bridge sections of the plurality of cross-type bus bars arranged one above the other.

In some embodiments, a bridge section holder is further included, the bridge section holder being fixed to the end plate and a holding end for holding the bridge section of one of the cross-type bus bars to the carrier tray. It has a fixed end which is particularly applicable.

In some embodiments, the storage portion is provided with a holding post that extends through the bridge section and the bridge section holder.

In some embodiments, an insulating layer is provided on the surface of the bridge section in which the two cross busbars are arranged to overlap each other.

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

In some embodiments, the accommodating portions are located at different heights so as to respectively support and accommodate the bridge sections that are arranged so that the two cross-type bus bars are partly offset from each other. And a second step portion.

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

In some embodiments, the flexible circuit board further includes an attachment plate attached to the extension arm and the bus bar so as to fix the extension arm to the bus bar.

In some embodiments, the attachment plate is attached to a surface of the extending arm opposite to the temperature sensor.

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

In some embodiments, the bus bar has an extension tab extending along the direction of the corresponding extension arm, and the recess is formed in the extension tab.

Therefore, in some embodiments, the battery connection module according to the present invention includes a carrier tray, a plurality of bus bars, and an electrode unit. A storage groove is formed in the carrier tray. The plurality of bus bars are attached to 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 an electrode plate holder, and the electrode plate is installed in the accommodating groove of the carrier tray and corresponds to it. The electric connection socket is provided on the electrode plate, and the electrode plate holder is fixed to the end plate and the holding end for holding the electrode plate on the carrier tray. 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 the portion where the holding end 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 accommodation groove, and a holding end of the electrode plate holder is inserted in correspondence with the insertion frame.

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

In some embodiments, a locking hook that locks the electrode plate is installed in the accommodation groove.

In some embodiments, a holding block is provided in the accommodation 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. Has been.

In some embodiments, a position limiting groove that accommodates 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 the same 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, in some embodiments, the battery connection module according to the present invention includes a carrier tray, a plurality of bus bars, an electrode unit, and an electrical connection bar. The plurality of bus bars are attached to the carrier tray. The electrode unit is superposed on one of the busbars and includes an electrode plate and an electrical connection socket, the electrode plate being installed on the carrier tray and superposed on a corresponding busbar, and the electrode The plate and the bus bar are made of different metal materials, the electrical connection socket is provided on the electrode plate, and the electrical connection socket is provided on the electrode plate and the first conductive ring provided on the electrode plate. And a housing penetrating the first conductive ring and a housing provided on the electrode plate and located on the outer periphery of the first conductive ring, the housing having the first alignment structure and the first alignment structure. And a fastening structure of the. The electrical connection bar includes a conductive bar and an electrical connection plug installed at an end of the conductive bar and correspondingly coupled with the electrical connection socket, the electrical connection plug being overlaid on an end of the conductive bar. A conductive block which is connected and has a through hole formed therein, a second conductive ring which is provided in the conductive block corresponding to the through hole, and an upper casing which is assembled with each other and accommodates the second conductive ring together. And a lower casing, and a fastener inserted in 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 in correspondence with the first alignment structure, and the first engagement structure. And a second engaging structure that is fitted together are formed integrally, and after the electric connection plug and the electric connection socket are correspondingly coupled to each other, the insertion portion is inserted into the housing, 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 includes a plurality of alignment blocks, the second attachment structure includes a plurality of attachment plates, and the plurality of alignments. The blocks and the plurality of engagement plates are alternately installed on the outer periphery of the insertion portion in order, and the first alignment structure of the electrical connection socket accommodates the plurality of alignment blocks respectively. The first fastening structure includes a plurality of fastening holes for fastening to the fastening plate, respectively.

In some embodiments, the fastener includes an insulating head portion that is limited in position between the conductive block and the upper casing, an insulating tail portion opposite to the insulating head portion, and the insulating head portion. And an external thread portion located between the insulating tail portion and the upper casing, the upper casing has an opening exposing the insulating head portion, and the sleeve is screwed in correspondence with the external thread portion of the fastener. A female threaded hole for attachment, and the electrical connection socket further has an insulating guard ring assembled over the upper opening of the sleeve.

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

In some embodiments, the first conductive ring of the electrical connection socket and the electrode plate are integrally formed, and the sleeve is correspondingly installed in the first conductive ring. ..

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

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

The battery connection module according to the present invention is a welding point or connection configured to connect in series between two battery packs in the related art by directly cross-connecting two battery packs by a cross type bus bar having an integral structure. The contacts for are omitted. The bridge section is reduced in width and folded into a multi-layer structure so that the bridge section can be reduced in width to facilitate installation and at the same time can be loaded with a large current. In addition, the temperature sensor electrically connected to the wiring of the flexible circuit board is directly fixed to the extension arm of the flexible circuit board, and the temperature sensor is directly arranged in the recess of the bus bar, so that the assembly is easy and easy. And the temperature detection becomes more direct. Further, in order to prevent displacement or vibration of the electrode plate, the electrode plate holder provides a stronger proof strength (torque or force in another direction) to the electrode plate. Further, the engaging structure, the alignment structure, and the fastener and the sleeve provided between the electrical connection plug and the electrical connection socket, quickly and in alignment with the electrical connection plug and the electrical connection socket. You can Further, the electrode plates are connected to the busbars made of different metal materials in an overlapping manner to improve the welding performance of each member, improve the conductivity, and reduce the heat storage.

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

It is a perspective view of the 1st example of the battery connection module concerning the present invention. FIG. 2 is an exploded perspective view of FIG. 1, in which an electric connection bar is omitted. FIG. 3 is an exploded perspective view of FIG. 2. It is a partial exploded perspective view explaining the recessed part of a bus bar and the temperature sensor of a flexible circuit board in the 1st example. FIG. 4 is a perspective view of a part illustrating a storage groove of a carrier tray and an electrode unit in the first embodiment. It is a top view of the said 1st Example, The illustration of the upper cover in the said 1st Example is abbreviate|omitted. FIG. 7 is a sectional view taken along the line VII-VII in FIG. 6. It is a perspective view explaining the electric connection plug of the electric connection bar and the electric connection socket of an electrode unit in the said 1st Example. FIG. 9 is an exploded perspective view of FIG. 8. It is a top view explaining that the electric connection plug of the electric connection bar in the said 1st Example is combined with the electric connection socket of an electrode unit. It is sectional drawing which followed the XI-XI line in FIG. It is a partial exploded perspective view explaining the protection pad and fixing tool 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. FIG. 14 is an exploded perspective view of FIG. 13. It is a one part perspective view explaining that the bridge part of the bridge type bus bar in the said 2nd Example is provided in the accommodation part of a carrier tray. FIG. 16 is an exploded perspective view of a part of FIG. 15. It is a perspective view explaining the bridge type bus bar in the 2nd example. It is the perspective view which looked at FIG. 17 from another angle. It is a partial disassembled perspective view explaining the electrode unit in the said 2nd Example. 20 is a further partial exploded perspective view based on FIG. 19. FIG. It is a disassembled perspective view explaining the electric connection bar in the said 2nd Example. It is a disassembled perspective view explaining the electrode unit in a modification. It is a top view explaining the electrode unit in the modification. FIG. 24 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 modification. It is a perspective view explaining the above-mentioned 1st example and the 2nd example, and the electric power feeder which equips the lower base with the battery pack. FIG. 27 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 Limiting Rib 12 Upper Position Limiting Block 13 Upper Position Limiting Hook 14 Positioning Post 15 Storage Recess 16 Mounting Base 161 Locking Hook 17 Storage Groove 17' Storage Groove 171 Holding block 171a Slot 172 Position limiting groove 173 Inserting frame 174 Locking hook 18 Positioning protrusion 19 Engaging protrusion 110 Receiving portion 1101 First step portion 1102 Second step portion 1103 Holding post 2 Bus bar 21 Electrode connecting portion 22 Bulging buffer section 23 Extended tab 231 Recessed section 24 Stacked connection section 3 Flexible circuit board 31 Main body 311 Positioning hole 312 Bending buffer section 313 Upper bending section 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 insulating layer 413 installation hole 42 electric 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 locking structure 425a Locking 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. Attachment structure of 2 5 electrical connection bar 5'electrical connection bar 51 conductive bar 511 conductive part 512 insulating outer layer 52 electrical connection plug 521 conductive block 521a through hole 522 second conductive ring 523 upper casing 523a opening 523b engaging hole 524 bottom Casing 524a Engagement block 525 Fastener 525a Insulation head part 525b Insulation tail part 525c Male screw 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 Fixing device 541 Belt part 542 Fixing part 6 Upper cover 61 Positioning groove 62 Engagement hole 63 Connection socket opening 64 Connector opening 7 Electrical connection 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 Insulating 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 housing 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 in the following description, similar elements are given the same reference numerals.

Please refer to FIG. 1 to FIG. The battery connection module 100 according to the first embodiment of the present invention is applied to be electrically connected to the battery pack 20, and the battery pack 20 includes a plurality of batteries 201 (in the first embodiment, , And 12), and 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 case 30 is 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 electric connection bars 5, and an upper cover 6.

The carrier tray 1 is applied to extend along the length direction D1 and is installed in the battery pack 20, and is made of an insulating material. The plurality of bus bars 2 are divided into two rows along the width direction D2 that is perpendicular to the length direction D1 and are assembled to the carrier tray 1, and the battery 201 that electrically connects the battery pack 20 is provided. Applied. In the first embodiment, each bus bar 2 is connected between a plurality of electrode connecting portions 21 applied to connect with the electrodes of the battery 201, and between the adjacent electrode connecting portions 21, and the lengthwise direction D1. A plurality of swelling buffer portions 22 that bulge in a direction away from the carrier tray 1 are provided along an up-and-down direction D3 that is perpendicular to the width direction D2. 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 portion 22 of the bus bar 2 and a plurality of lower position limiting ribs located above the bus bar 2. The upper position limiting block 12 and the plurality of upper position limiting hooks 13 are included, and the lower position limiting rib 11, the upper position limiting block 12, and the upper position limiting hook 13 both limit the position of the bus bar 2.

Please refer to FIG. 4 and FIG. 5 together. The flexible circuit board 3 is provided on the carrier tray 1 and is located between two rows of bus bars 2, a plurality of extension arms 32 extending from the body 31 toward the bus bar 2, and the extension. The bus bar 2 includes a plurality of temperature sensors 33 (for example, NTC thermistors (Negative Temperature Coefficient thermistor)) provided on the existing arm 32 and electrically connected to the wiring of the flexible circuit board 3. The bus bar 2 , Further has an extension tab 23 extending toward the corresponding extension arm 32, and accommodates the temperature sensor 33 correspondingly 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 variation, the bus bar 2 does not have the extending tab 23, and the recess 231 may be directly formed. In another variation, the recess 231 has a blind hole. In the first embodiment, the flexible circuit board 3 further includes a plurality of attach plates 34, and the plurality of attach plates 34 may be made of nickel as an example. Of course, the plurality of attachment plates 34 may be formed on the surface of the extension arm 32 on the opposite side of the temperature sensor 33 by a method such as welding so as to fix the extension arm 32 to the bus bar 2 and the surface. It is attached to the bus bar 2. Furthermore, 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, for example, A heat conductive rubber or the like may be used, and the heat conductive filler can contribute to transfer the heat energy on the bus bar 2 to the temperature sensor 33, but is not limited thereto. By directly fixing the temperature sensor 33 electrically connected to the wiring to the extending arm 32 of the flexible circuit board 3 and by directly arranging the temperature sensor 33 in the recess 231 of the bus bar 2, the assembly is easy and easy. Moreover, temperature detection becomes more direct, and by attaching the attachment plate 34 to the extension arm 32 and the bus bar 2, the fixation between the extension arm 32 and the bus bar 2 can be strengthened.

In the first embodiment, the 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 buffer portion 312 and an upper bent portion 313 that is bent 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. And a plurality of accommodating recesses 15 for accommodating the plurality of bending buffers 312, and a mounting pedestal 16 adjacent to the upper bending portion 313. The flexible circuit board 3 can be fixed by thermally welding the ends of the plurality of positioning posts 14 to the enlarged head. The battery connection module 100 further includes an electric connector 7 and a back plate 8 provided on the upper bent portion 313 by electrical connection. Two locking hooks 161 facing each other along the length direction D1 are formed on the mounting pedestal 16, and the electrical connector 7 is locked on the mounting pedestal 16 and the mounting pedestal 16 is connected. The two engaging grooves 70 that engage with the engaging hooks 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 in the upper bent portion 313. And a plurality of pins 71, and the back plate 8 is fixed to the pins 71 so as to strengthen the fixed holding force between the electric connector 7 and the upper bent portion 313 and the electric connector. The upper bent portion 313 is sandwiched together with 7. In addition, the flexible circuit board 3 includes a plurality of voltage acquisition plates 35 that are electrically connected to the main body 31 and that are in contact with the plurality of bus bars 2 in order to acquire the 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 status information (for example, temperature, voltage, etc.) of the battery pack 20, and are electrically connected to the flexible circuit board 3. The status information can be transmitted to a battery management device (not shown) connected to the electric connector 7 by the electric connector 7. The electrical connector 7 further comprises a protective cover 72 to protect the electrical connector 7 when the electrical connector 7 is not coupled to the device.

Please refer to FIG. 3 and FIGS. In the carrier tray 1, two housing grooves 17 located at both ends in the length direction D1 are formed, a holding block 171 is provided in each housing groove 17, and a position limiting groove 172 is provided below the holding block 171. Are 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 accommodation groove 17 of the carrier tray 1 and is overlapped and connected to the lap connection portion 24 formed of the corresponding bus bar 2, and the tab-shaped insertion convex portion 410 is provided at the end of the electrode plate 41. The insertion protrusion 410 is inserted into the position limiting groove 172 below the corresponding holding block 171 so as to be housed 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 attached 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 431 and a fixed end 432 fixed to the adjacent end plate 301 by a welding method, for example. Each holding block 171 is formed with a slot 171 a for accommodating the holding end portion 431 of the corresponding electrode plate holder 43. A plurality of interference protrusions that interfere with the slot 171a are formed on both side edges of the holding end 431 of each electrode plate holder 43 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 displacement or vibration of the electrode plate 41, the electrode plate holder 43 provides the electrode plate 41 with a stronger proof strength (torque or force in another direction).

Please refer to FIG. 8 to FIG. The electrical connection socket 42 is provided on the electrode plate 41, and the electrical connection socket 42 is provided on the electrode plate 41 and the first conductive ring 421 provided on the electrode plate 41. It has a sleeve 422 penetrating the ring 421 and a housing 423 provided on the electrode plate 41 and 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 integrated structure, but they may be a two-part combination and are not limited to this. The sleeve 422 penetrates the electrode plate 41 and is inserted correspondingly in the first conductive ring 421. A first alignment structure 424 and a first engagement structure 425 are formed on the housing 423. The electrical connection bar 5 includes a conductive bar 51 and two electrical connection plugs 52, which are installed at two ends of the conductive bar 51 and for correspondingly coupling with the electrical connection socket 42. Each of the electrical connection plugs 52 is overlapped with the end of the conductive bar 51 and has a conductive block 521 formed with a through hole 521a, and a second conductive block 521 provided in the conductive block 521 corresponding to the through hole 521a. Conductive ring 522, an upper casing 523 and a lower casing 524 that are assembled together to accommodate both the second conductive ring 522 and the conductive block 521, a through hole 521 a 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 in the movable block 521 and is movably positioned between the conductive block 521 and the upper casing 523. Although the embodiment has a single-piece structure, it may be a two-part combination, 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 has a plurality of engagement holes 523b formed at the side edges thereof, A plurality of engagement blocks 524a that are engaged with the engagement holes 523b are formed in the 524, and thereby the upper casing 523 and the lower casing 524 are attached to each other so as to be assembled with each other. In the lower casing 524, an insertion portion 526 located on the outer periphery of the second conductive ring 522, a second alignment structure 527 that fits corresponding to the first alignment structure 424, and A second engaging structure 528 that fits in correspondence with the first engaging structure 425 is integrally formed, and after the electric connecting plug 52 and the electric connecting 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 further electrically connected to the conductive bar 51 of the electrical connection bar 5 so that the insertion is performed. 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, and the bus bar 2 is made of aluminum so that the bus bar 2 can be easily welded to the electrode of the battery 201 of the battery pack 20. Although it is a plate, as an example, the bus bar 2 may have a structure of multilayer aluminum. In order to improve the conductivity of the electrode plate 41, the electrode plate 41, which is connected to the bus bar 2 in a stacked manner, is a solid copper material. 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 superposed 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 electric 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 multilayered copper to improve conductivity and reduce heat storage. Therefore, the welding performance of each member is improved, the conductivity is improved, and the heat storage is reduced. 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. 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 correspondingly accommodating the alignment block 527a, respectively, and the first engagement structure 425 has a plurality of alignment holes 424a, respectively. A plurality of engaging blocks 425a for engaging corresponding to the engaging concave portions 528b of the engaging plate 528a are included. 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. And a male screw portion 525c located between the insulating head portion 525b and the insulating tail portion 525b. In the first embodiment, the insulating head portion 525a and the insulating tail portion 525b are injection-molded with an insulating material. The fastener 525 is formed by a method. The upper casing 523 has an opening 523a that exposes the insulating head portion 525a, and the sleeve 422 has an internal threaded hole 422a to be screwed correspondingly to the external threaded portion 525c of the fastener 525 and is located outside. In addition, the outer ring surface 422b has a tapered shape with a narrow upper portion and a wide lower portion, a lower flange 422c located at the bottom and wide, and a plurality of latches 422d adjacent to the lower flange 422c. Due to the outer ring surface 422b, the sleeve 422 can be easily pushed into the first conductive ring 421 from below, and can be closely joined to the inner wall surface of the first conductive ring 421, and the lower flange 422c can be , The plurality of latches 422d can be brought into contact with the lower side of the first conductive ring 421, and the plurality of latches 422d can be fixed to improve the holding force between the sleeve 422 and the first conductive ring 421. It can be engaged by interfering with the lower part of the inner wall surface of the first conductive ring 421. The electrical connection socket 42 further includes an insulating guard ring 426 that is an insulating material and is assembled to the upper end opening of the sleeve 422, 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 receiving an electric shock in the process of coupling the electrical connection plug 52 and the electrical connection socket 42. Then, the engagement structure, the alignment structure, and the fastener 525 and the sleeve 422 provided between the electrical connection plug 52 and the electrical connection socket 42 allow the electrical connection plug 52 and the electrical connection socket 42 to be quickly and positioned. Can be combined together. 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 protective cover 44. 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 second fastening structure 442 can be fastened to the first fastening structure 425 so that the protective cover 44 is provided to cover the electrical connection socket 42, whereby the electrical connection socket 42 is secured. When not connected to the electrical connection plug 52, it can be covered and protected by the protective cover 44. Also, refer to FIG. 1 and FIG. 12 together. In the first embodiment, each electric connection bar 5 is provided on the plurality of protection pads 53 formed on the insulating outer layer 512 and on the plurality of protection pads 53 for strengthening the fixing of the conductive bar 51. Further, a plurality of fixing members 54 are provided, and each fixing member 54 is inserted into or sandwiched between the belt portion 541 fitted to the plurality of protection pads 53 and the frame of the housing. By fixing the conductive bar 51 of the electric connection bar 5 to an appropriate position by the plurality of fixing tools 54, the conductive bar 51 of the electric connection bar 5 is caught by another. It can be prevented from being pulled and pulled.

Referring back to FIG. 1 to FIG. 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, each of the side edges is formed. Two alignment protrusions 18 are provided. The alignment protrusions 18 have an inverted L shape so as to align with the edges of the battery pack 20, and the alignment protrusions 18 located on both side edges are arranged in the width direction D2. It is offset by two from each other. The upper cover 6 is provided so as to cover above the carrier tray 1, and the upper cover 6 has a plurality of alignment grooves 61 extending through the plurality of alignment protrusions 18 correspondingly. A plurality of engagement holes 62 to which the plurality of engagement projections 19 are correspondingly engaged, two connection socket openings 63 respectively corresponding to the plurality of electric connection sockets 42, and a connector opening corresponding to the electric connector 7. 64 are formed. The user fits the plurality of alignment protrusions 18 and the alignment groove 61, which are displaced from each other in the width direction D2, so that the user covers the upper cover 6 in the wrong direction on the carrier tray 1. It is possible to prevent that.

13 to 16 are referred to. The difference between the battery connection module 100′ according to the second embodiment of the present invention and the battery connection module 100 according to the first embodiment is that the second embodiment is such that the first and second battery connection modules 100′ are parallel to each other. Battery pack 202 and second battery pack 203, and the number of the batteries 201 of the first battery pack 202 and the second battery pack 203 is 18, respectively. By the way, The plurality of bus bars 2 are divided into four rows substantially along the width direction D2, and two rows of them are applied to electrically connect the first battery pack 202, and another of them is applied. The two columns are applied to electrically connect the second battery pack 203, the number of the flexible circuit boards 3 is two, 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. 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 attached to the carrier tray 1 ′, and each cross-type bus bar 9 includes a first bus bar section 91 which is applied to electrically connect the first battery pack 202. A second busbar section 92 applied to electrically connecting the second battery pack 203, and a bridge section 93 connected to the first busbar section 91 and the second busbar section 92. The bridge section 93 has a narrow width and is folded into a multi-layer structure so that a large current can be loaded while reducing the width to facilitate installation. Although the third embodiment has a three-layer structure, it may have a multi-layer structure with another number of layers and is not limited to this. The first busbar section 91, the second busbar section 92, and the bridge section 93 are integrally formed in the second embodiment, and two battery packs are formed by the cross-type busbar having the integral structure. By directly cross-connecting (the first battery pack 202 and the second battery pack 203), two battery packs (the first battery pack 202 and the second battery pack 203) in the related art are connected in series. A welding spot or a contact for connection configured to do so is omitted. The carrier tray 1 ′ is provided with a housing portion 110 located at one end thereof in the length direction D1, and the housing portion 110 is arranged by vertically shifting a part of the two cross type bus bars 9 so as to overlap each other. It has a first step 1101 and a second step 1102 located at different heights so as to support and accommodate the bridge sections 93 respectively. The plurality of bridge section holders 10 are respectively pressed against the edges of the bridge section 93, and each of the bridge section holders 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 on the carrier tray 1 ′ and a fixed end 102 adapted to be fixed to one of the end plates 301 adjacent to each other by a welding method, for example. The housing portion 110 is further provided with three holding posts 1103 inserted into the plurality of bridge sections 93 and the holding ends 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 and the plurality of bridge section holders 10 described above, the end of the holding post 1103 forms an enlarged head (not shown) by a method of heat welding, whereby the plurality of the plurality of bridge section holders 10 are formed. The bridge section 93 of the cross type bus bar 9 and the plurality of bridge section holders 10 can be fixedly held. Reference is also made to FIGS. 17 to 18. In the second embodiment, the insulating layer 94 is provided 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 the surface of the holding end 101 of the bridge section holder 10 is provided. The insulating layer 103 is covered. As an example, the insulating layer 94 and the insulating layer 103 shown in black in the drawing may be made of plastic or resin, and can be formed by a method such as thermal spraying, coating or coating molding.

19 to 20 will be referred to. The plurality of accommodation grooves 17' are formed at the other end of the carrier tray 1'on the side opposite to the location where the accommodation portion 110 is formed in the length direction D1 and arranged along the width direction D2. Has been done. Two insertion frames 173 are installed in each accommodation groove 17', 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 of the above is inserted and installed corresponding to the insertion frame 173, and is directly placed on the upper surface of the corresponding electrode plate 41′. An insulating layer 412 and an insulating layer 433 are provided on the surfaces of the holding end portion 431 of the electrode plate holder 43' and the electrode plate 41', which are arranged to overlap each other. The insulating layer 412 and the insulating layer 433 shown in black in the figure may be made of plastic or resin, for example, and may 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 insulating sleeves assembled by a fitting method, but are not limited thereto. In the second embodiment, each accommodation groove 17' is further provided with a locking hook 174 for locking the corresponding electrode plate 41' in order to strengthen the fixed holding force with respect to the electrode plate 41'. ..

Reference is made to FIG. Further, the difference between the electric connection bar 5'in the second embodiment and the electric connection bar 5 in the first embodiment is that the insulation head portion 525a and the insulation tail portion 525b of the electric connection bar 5'are different. Although the fastener 525 is provided by the assembling method, the structure may be formed by using the coating molding method as in the first embodiment. The conductive portion 511 is a solid copper material, and the section of the conductive portion 511 covered with the insulating outer layer 512 has a circular cross section.

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

26 to 27 will be referred to. Regarding the plurality of the first and second embodiments and the plurality of power supply devices 200 in which the battery packs are mounted in the housing, the lower part that can be provided in the power supply device housing is shown in the drawing. Only the base 200a is shown, so that the power supply device 200 can supply a large current according to needs, by the battery connection modules 100, 100' and their electric connection bars 5, 5', the first embodiment and the first embodiment described above. 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 both can be adjusted according to needs. Is. Reference is also made to FIG. The above end plates 301 are at both ends of the battery housing case 30, and in one modified example, the end plates 301 do not have to be a part of the battery housing case 30 and are individually provided at both ends of the battery pack. Alternatively, in another modification, the end plate 301 may be, for example, a partition plate of the lower base 200a, and, 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, in the battery connection module 100 of the present invention, the two battery packs (the first battery pack 202 and the second battery pack 203) are directly cross-connected by the cross-type bus bar 9 having an integral structure, and thus the conventional technology is achieved. The welding point or the contact for connection, which is configured to connect the two battery packs (the first battery pack 202 and the second battery pack 203) in 1 above in series, is omitted. The bridge section 93 has a reduced width in the width direction D2 and is folded into a multi-layered structure so that the bridge section 93 can be reduced in width to facilitate mounting and at the same time can be loaded with a large current. Further, the temperature sensor 33, which is 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 also disposed directly corresponding to the recess 231 of the bus bar 2 to assemble. Is simple and easy, and the temperature detection becomes more direct. Further, in order to prevent displacement or vibration of the electrode plates 41, 41 ′, the electrode plate holders 43, 43 ′ provide stronger proof strength (torque or force in another direction) to the electrode plates 41, 41 ′. ing. Further, the engagement structure, the alignment structure, and the fastener 525 and the sleeve 422 provided between the electrical connection plug 52 and the electrical connection socket 42 allow the electrical connection plug 52 and the electrical connection socket 42 to be quickly and positionally positioned. Can be combined together. Further, the electrode plates 41 and 41' are connected to the bus bar 2 made of different metal material in an overlapping manner to improve the welding performance of each member, improve conductivity, and reduce heat storage.

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

Claims (30)

A battery connection module adapted to connect a first battery pack and a second battery pack that are parallel to each other, comprising:
Carrier tray,
It is assembled to the carrier tray, part of which is applied to electrically connect the first battery pack, and part of which is applied to electrically connect the second battery pack. Multiple busbars,
A first busbar section assembled to the carrier tray and adapted to electrically connect the first battery pack, and a second busbar section adapted to electrically connect the second battery pack. And a cross-type bus bar having a bus bar section and a bridge section connected to the first bus bar section and the second bus bar section. The battery connection module according to claim 1, wherein the first busbar section, the second busbar section, and the bridge section of each cross-type busbar are integrally formed. The battery connection module according to claim 2, wherein each bridge section is reduced in width and folded into a multilayer structure. The battery connection module according to claim 3, wherein an accommodating portion is provided on the carrier tray, and the accommodating portion is used for accommodating the bridge sections of the cross-type bus bar which are arranged one above the other. A holder for the bridge section, the holder for the bridge section holding the bridge section of one of the cross type bus bars to the carrier tray; and a fixed end adapted to be fixed to the end plate. The battery connection module according to claim 4, comprising: The battery connection module according to claim 5, wherein the housing portion is provided with a holding post that is inserted into the bridge section and the bridge section holder. The battery connection module according to claim 6, wherein an insulating layer is provided on a surface of a bridge section in which the two cross type bus bars are arranged so as to overlap each other. The battery connection module according to claim 7, wherein an insulating layer is provided on the surface of the holding end of the bridge section holder. A first step portion and a second step portion located at different heights are arranged so that the accommodating portion supports and accommodates the bridge sections, which are arranged so that a part of the two cross-type bus bars are offset from each other. The battery connection module according to claim 8, which has a step portion. Carrier tray,
A plurality of bus bars assembled on the carrier tray,
A flexible circuit board, a main body provided on the carrier tray, an extension arm extending from the main body toward the bus bar, and an electrical connection to wiring of the flexible circuit board provided on the extension arm. And a flexible circuit board including a temperature sensor connected to the battery connection module, wherein the bus bar is formed with a recess for accommodating the temperature sensor. The battery connection module according to claim 10, wherein the flexible circuit board further includes an attachment plate attached to the extension arm and the bus bar so as to fix the extension arm to the bus bar. The battery connection module according to claim 11, wherein the attachment plate is attached to a surface of the extension arm opposite to the temperature sensor. The battery connection module according to claim 12, wherein the recess of the bus bar is filled with a thermally conductive filler that covers the temperature sensor. Battery according to any one of claims 10 to 13, wherein the busbar has an extending tab extending along the direction of the corresponding extending arm, and the recess is formed in the extending tab. Connection module. A carrier tray having a receiving groove formed therein,
A plurality of bus bars assembled on the carrier tray;
One of the bus bars is superposed and connected, and includes an electrode plate, an electrical connection socket, and an electrode plate holder. The electrode plate is installed in the accommodation groove of the carrier tray and is superposed and connected to the corresponding bus bar. The electric connection socket is provided on the electrode plate, and the electrode plate holder has a holding end portion for holding the electrode plate on a carrier tray and a fixed end portion for fixing to the end plate. An electrode unit having the battery connection module. The battery connection module according to claim 15, wherein a holding end portion of the electrode plate holder is arranged so as to overlap with an upper surface of the electrode plate. The battery connection module according to claim 16, wherein an insulating layer is provided on each of surfaces of a portion where the holding end portion of the electrode plate holder and the electrode plate are arranged to overlap each other. The battery connection module according to claim 16 or 17, wherein an insertion frame is installed in the accommodation 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 18, wherein an opening through which a corresponding insertion frame penetrates is formed in the electrode plate. The battery connection module according to claim 19, wherein a locking hook that locks the electrode plate is installed in the accommodation groove. The holding block is provided in the accommodation 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 is formed below the holding block to accommodate the end of the electrode plate, and a slot is formed in the holding block to accommodate the holding end of the electrode plate holder. 22. The battery connection module according to claim 21. The battery connection module according to claim 22, wherein an interference protrusion that interferes with the slot is formed on a side edge of the holding end portion of the electrode plate holder. Carrier tray,
A plurality of bus bars assembled on the carrier tray,
An electrode unit, which is superposed on one of the bus bars and includes an electrode plate and an electrical connection socket, the electrode plate being installed on the carrier tray and being superposed on a corresponding bus bar, and the electrode The plate and the bus bar are made of different metal materials, the electrical connection socket is provided on the electrode plate, and the electrical connection socket is provided on the electrode plate and the first conductive ring provided on the electrode plate. And a housing penetrating the first conductive ring and a housing provided on the electrode plate and located on the outer periphery of the first conductive ring, the housing having the first alignment structure and the first alignment structure. An electrode unit having a fastening structure of
An electrical connection bar, comprising a conductive bar and an electrical connection plug installed at the end of the conductive bar and correspondingly coupled with the electrical connection socket, the electrical connection plug being at the end of the conductive bar. A conductive block that is overlapped and has a through hole formed therein, a second conductive ring that is provided in the conductive block corresponding to the through hole, and the second conductive ring that is assembled together and accommodates the second conductive ring. A lower casing, and a fastener that is inserted into the through hole of the conductive block and the second conductive ring and is movably positioned between the conductive block and the upper casing. The casing is provided with an insertion portion located on the outer periphery of the second conductive ring, a second alignment structure that fits in correspondence with the first alignment structure, and a first engagement structure. A battery connection module comprising: an electric connection bar integrally formed with a corresponding second engaging structure.
After the electrical connection plug and the electrical connection socket have been mated with each other, the insertion portion is inserted into the housing, the fastener is assembled to the sleeve, the first conductive ring and the second conductive ring are attached. The conductive ring is a battery connection module in contact with each other so as to electrically connect the electrode plate and the conductive bar. The second alignment structure of the electrical connection plug includes a plurality of alignment blocks, the second attachment structure includes a plurality of attachment plates, and the alignment block and the attachment plate are the insertion members. The first alignment structure of the electrical connection socket includes a plurality of alignment holes for correspondingly accommodating the alignment blocks, the first attachment structure being alternately installed on the outer periphery of the portion. 25. The battery connection module according to claim 24, wherein each of the plurality of attachment blocks includes a plurality of attachment blocks for attaching to the attachment plate. Between the insulating head part in which the fastener is limited in position between the conductive block and the upper casing, an insulating tail part opposite to the insulating head part, and the insulating head part and the insulating tail part. A male screw portion located at, the upper casing has an opening for exposing the insulating head portion, the sleeve has a female screw hole for screwing corresponding to the male screw portion of the fastener, 26. The battery connection module according to claim 25, wherein the electrical connection socket further comprises an insulating guard ring assembled over the upper opening of the sleeve. An installation hole is formed in the electrode plate, a first conductive ring of the electrical connection socket is inserted corresponding to the installation hole, and a sleeve is inserted correspondingly in the first conductive ring. 25. The battery connection module according to claim 24. 25. The battery connection according to claim 24, wherein the first conductive ring of the electrical connection socket and the electrode plate are integrally formed, and the sleeve is correspondingly inserted in the first conductive ring. module. The battery connection module according to claim 24, wherein 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. The battery connection module according to claim 24, wherein the plurality of bus bars are made of aluminum and the electrode plates are made of solid copper.

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