CN115117563B

CN115117563B - Battery connection module

Info

Publication number: CN115117563B
Application number: CN202210721626.6A
Authority: CN
Inventors: 林健兴; 吴筱凭; 洪丽琴; 章晓暖; 魏慧梅; 刘礼华
Original assignee: Molex LLC
Current assignee: Molex LLC
Priority date: 2018-12-29
Filing date: 2018-12-29
Publication date: 2024-04-02
Anticipated expiration: 2038-12-29
Also published as: JP2020109741A; TW202027317A; JP7080361B2; KR20210007016A; KR20200083192A; TWI718500B; KR20210007017A; JP2021077651A; DE102019134469A1; JP7013595B2; KR102239603B1; KR20210007018A; KR102239601B1; KR102239600B1; CN115117563A; JP2021077649A; CN111384347A; JP7080362B2; CN111384347B; CN115051118A

Abstract

A battery connection module, comprising: a bearing plate, which is provided with a containing groove; a plurality of converging pieces assembled on the bearing plate; and the electrode unit is lapped on one of the confluence pieces and comprises an electrode plate, an electric power connecting seat and a holding piece for the electrode plate, wherein the electrode plate is arranged in a containing groove of the bearing plate and lapped on the corresponding confluence piece, the electric power connecting seat is arranged on the electrode plate, and the holding piece for the electrode plate is provided with a holding end part for holding the electrode plate on the bearing plate and a fixed end part suitable for being fixed on an end plate.

Description

Battery connection module

The present application is a divisional application of the application entitled "Dongguan Moshi connector Co., ltd., application date of 2018, 12/29/month, application number of 201811631941.X, and application name of" Battery connection Module ".

Technical Field

The present utility model relates to a battery connection module, and more particularly, to a battery connection module for modularly connecting battery packs.

Background

U.S. patent No. US8,879,262 (corresponding to chinese utility model patent application No. CN 201080048799.1) discloses only the construction of the folding type confluence portion of the confluence piece.

Chinese patent publication No. CN206806468U discloses that the temperature sensor is mounted on the bus bar and fixed in a recess of a bus bar. But the temperature sensor and the circuit board are additionally connected by additional wiring or connection. Therefore, the structure and the manufacture are complex, and the connection structure of the wire bonding is easy to be damaged.

Chinese patent grant publication No. CN206742321U (corresponding to chinese patent publication No. CN107046114 a) discloses that the bus bar is fixed to the clamping plate at the end of the battery module through a adapter base. Because the connection between the bus bar and the clamping plate at the end part of the battery module is through the adapter base, the bus bar and the clamping plate are required to be mutually clamped and assembled, so the bus bar is complex and unstable in structure.

US 2018/0287170 A1 (corresponding to chinese patent publication CN108695602 a) discloses that a first conductor and a second conductor are electrically connected by a connector, and the fastening structure of the connector is similar to the present disclosure, but further innovation is required to improve the fast and aligned butt joint between connectors. Furthermore, the first conductor and the second conductor are not connected to the battery bus.

Disclosure of Invention

It is therefore an object of the present utility model to provide a battery connection module that ameliorates at least one of the disadvantages of the prior art.

Thus, in some embodiments, the battery connection module of the present utility model is adapted to connect a first battery pack and a second battery pack side by side with each other, and the battery connection module includes a carrier plate, a plurality of bus bars, and two bridge bars. The bus members are assembled on the carrying tray, wherein one part of the bus members is suitable for electrically connecting the first battery pack, and the other part of the bus members is suitable for electrically connecting the second battery pack. The two bridging type bus members are assembled on the bearing disc, and each bridging type bus member is provided with a first bus section suitable for being electrically connected with the first battery pack, a second bus section suitable for being electrically connected with the second battery pack and a bridging section connected with the first bus section and the second bus section.

In some embodiments, the first bus section, the second bus section, and the bridge section of each bridging bus member are integrally formed.

In some embodiments, each bridge segment is folded into a multi-layer structure with a reduced width.

In some embodiments, the tray has a receiving portion for receiving the bridge segments of the bridging-type bus bars that are stacked one above the other.

In some embodiments, a bridge segment holder is also included, the bridge segment holder having a holding end for holding a bridge segment of one of the bridge-type manifolds to the carrier tray, and a securing end adapted to be secured to an end plate.

In some embodiments, the accommodating portion is provided with a retaining post penetrating the bridge section and the retaining member for the bridge section.

In some embodiments, the surface of the bridging segment where the two bridging-type bus bars overlap is covered with an insulating layer.

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

In some embodiments, the accommodating portion has a first step portion and a second step portion at different heights to respectively support and accommodate the bridge segments of the two bridging-type bus members partially overlapped in a staggered manner.

Thus, in some embodiments, the battery connection module of the present utility model includes a carrier tray, a plurality of bus bars, and a flexible circuit board. The bus members are assembled on the carrying tray. The flexible circuit board comprises a body arranged on the bearing disc, an extension arm extending from the body towards the confluence part, and a temperature sensor arranged on the extension arm and electrically connected with a circuit trace of the flexible circuit board, wherein the confluence part is formed with a concave part corresponding to the temperature sensor.

In some embodiments, the flexible circuit board further comprises an attachment tab attached to the extension arm and the bus bar to secure the extension arm to the bus bar.

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

In some embodiments, the recess of the busbar is filled with a thermally conductive filler that encases the temperature sensor.

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

Thus, in some embodiments, the battery connection module of the present utility model includes a carrier plate, a plurality of bus members, and an electrode unit. The bearing plate is provided with a containing groove. The bus members are assembled on the carrying tray. The electrode unit is lapped on one of the confluence pieces and comprises an electrode plate, an electric power connecting seat and a holding piece for the electrode plate, wherein the electrode plate is arranged in a containing groove of the bearing plate and lapped on the corresponding confluence piece, the electric power connecting seat is arranged on the electrode plate, and the holding piece for the electrode plate is provided with a holding end part for holding the electrode plate on the bearing plate and a fixed end part which is suitable for being fixed on an end plate.

In some embodiments, the holding end of the holder for an electrode sheet is stacked on the upper surface of the electrode sheet.

In some embodiments, the holding end portion of the holder for electrode sheets and the surface of the portion where the electrode sheets overlap each other are provided with insulating layers, respectively.

In some embodiments, an insertion frame is disposed at the receiving groove, and a holding end of the electrode sheet holder is correspondingly inserted into the insertion frame.

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

In some embodiments, the holding groove is provided with a hook for fastening the electrode plate.

In some embodiments, the receiving groove is provided with a holding block, the tip of the electrode tab extends below the corresponding holding block, and the holding end of the electrode tab holder is assembled to the holding block.

In some embodiments, a limiting groove corresponding to the end of the electrode plate is formed below the holding block, and a slot corresponding to the holding end of the electrode plate holder is formed on the holding block.

In some embodiments, the side edges of the holding end portions of the electrode sheet holder are formed with interference projections that interfere with the insertion grooves.

Thus, in some embodiments, the battery connection module of the present utility model includes a carrier plate, a plurality of bus members, an electrode unit, and a power connection bar. The bus members are assembled on the carrying tray. The electrode unit is lapped on one of the confluence pieces and comprises an electrode plate and an electric power connecting seat, the electrode plate is arranged on the bearing disc and lapped on the corresponding confluence piece, the electrode plate and the confluence piece are made of dissimilar metal materials, the electric power connecting seat is arranged on the electrode plate, the electric power connecting seat is provided with a first conducting ring arranged on the electrode plate, a sleeve arranged on the electrode plate and penetrating through the first conducting ring, and a shell arranged on the electrode plate and positioned on the periphery of the first conducting ring, and the shell is provided with a first alignment structure and a first buckling structure. The electric power connecting strip comprises a conducting strip and an electric power connector arranged at the tail end of the conducting strip and used for being matched with the electric power connecting seat, wherein the electric power connector comprises a conducting block which is lapped at the tail end of the conducting strip and is provided with a through hole, a second conducting ring which is correspondingly arranged on the conducting block in a penetrating way, an upper shell and a lower shell which are mutually assembled to jointly accommodate the second conducting ring, and a fastening piece which penetrates through the through hole of the conducting block and the second conducting ring and is movably limited between the conducting block and the upper shell, the lower shell is integrally provided with a plugging part which is arranged at the periphery of the second conducting ring, a second alignment structure which is correspondingly matched with the first alignment structure and a second buckling structure which is correspondingly matched with the first buckling structure, after the electric power connector is matched with the electric power connecting seat, the plugging part is plugged into the outer shell, the fastening piece is mutually contacted with the first conducting ring and the second conducting ring in a connecting way, and the fastening piece is electrically connected with the conducting strip.

In some embodiments, the second alignment structure of the power connector includes a plurality of alignment blocks, the second fastening structure includes a plurality of fastening pieces, the alignment blocks and the fastening pieces are sequentially and interactively disposed on the periphery of the plugging portion, the first alignment structure of the power connector includes a plurality of alignment holes for respectively and correspondingly accommodating the alignment blocks, and the first fastening structure includes a plurality of fastening blocks respectively and correspondingly fastened with the fastening pieces.

In some embodiments, the fastener has an insulating head portion defined between the conductive block and the upper housing, an insulating tail portion opposite the insulating head portion, and an externally threaded portion between the insulating head portion and the insulating tail portion, the upper housing has an opening exposing the insulating head portion, the sleeve has an internally threaded hole for mating locking with the externally threaded portion of the fastener, and the power connection block further has an insulating protection ring sleeved over the upper opening of the sleeve.

In some embodiments, the electrode plate is formed with a setting hole, the first conductive ring of the power connection base correspondingly penetrates through the setting hole, and the sleeve correspondingly penetrates through the first conductive ring.

In some embodiments, the first conductive ring of the power connection base and the electrode plate are integrally configured, and the sleeve correspondingly penetrates through the first conductive ring.

In some embodiments, the conductive strip has a conductive portion formed of a plurality of layers of copper material, and the conductive block of the power connector is a solid copper material.

In some embodiments, the bus bars are aluminum and the electrode plates are solid copper.

The battery connecting module directly bridges the two battery packs through the bridging type confluence piece with an integrated structure, and omits the welding point or the junction for wiring which is formed by connecting the two battery packs in series in the prior art. The bridge segments are folded in a multi-layered structure with reduced width in the width direction to reduce the width for installation while being capable of carrying large currents. In addition, the temperature sensor electrically connected to the circuit trace of the flexible circuit board is directly fixed on the extension arm of the flexible circuit board and is directly correspondingly arranged in the concave part of the bus piece, so that the assembly is simple and easy, and the temperature sensing is more direct. In addition, the retainer for the electrode plate provides greater stress intensity (torsion or other directional force) for the electrode plate so as to avoid displacement or vibration of the electrode plate. Furthermore, through the buckling structure, the alignment structure, the fastener and the sleeve arranged between the electric power connector and the electric power connecting seat, the electric power connector and the electric power connecting seat can be quickly aligned. Furthermore, the electrode plates are lapped on the converging pieces made of dissimilar metal materials, thereby improving the welding performance of each component, increasing the conductivity and reducing the heat accumulation.

Drawings

Other features and technical effects of the present utility model will be clearly apparent in the embodiments with reference to the accompanying drawings, in which:

fig. 1 is a perspective view of a first embodiment of a battery connection module according to the present utility model;

FIG. 2 is an exploded perspective view of FIG. 1, with the power connection strips omitted;

FIG. 3 is an exploded perspective view of FIG. 2;

FIG. 4 is a partial exploded view illustrating the recess of the bus bar and the temperature sensor of the flexible circuit board of the first embodiment;

FIG. 5 is a partial perspective view illustrating the accommodating groove and the electrode unit of the carrier tray of the first embodiment;

FIG. 6 is a top view of the first embodiment, with the upper cover omitted;

FIG. 7 is a cross-sectional view taken along line VII-VII of FIG. 6;

fig. 8 is a perspective view illustrating the power connector of the power connection strip and the power connection base of the electrode unit according to the first embodiment;

FIG. 9 is an exploded perspective view of FIG. 8;

fig. 10 is a plan view illustrating the docking of the power connector of the power connection strip of the first embodiment to the power connection base of the electrode unit;

FIG. 11 is a cross-sectional view taken along line XI-XI in FIG. 10;

FIG. 12 is a partial exploded view illustrating the protection pad and the fixing member of the power connection bar of the first embodiment;

fig. 13 is a perspective view of a second embodiment of the battery connection module of the present utility model;

FIG. 14 is an exploded perspective view of FIG. 13;

fig. 15 is a partial perspective view illustrating that the bridging portion of the bridging type bus bar of the second embodiment is disposed at the accommodating portion of the carrier tray;

FIG. 16 is a partial exploded perspective view of FIG. 15;

FIG. 17 is a perspective view illustrating the bridging type bus bar of the second embodiment;

FIG. 18 is a perspective view of FIG. 17 from another perspective;

fig. 19 is a partial exploded perspective view illustrating the electrode unit of the second embodiment;

FIG. 20 is a further partial exploded perspective view based on FIG. 19;

FIG. 21 is an exploded perspective view illustrating the power connection strip of the second embodiment;

FIG. 22 is an exploded perspective view illustrating an electrode unit in an alternative embodiment;

FIG. 23 is a top view illustrating the electrode unit in this variant embodiment;

FIG. 24 is a cross-sectional view taken along line XXIV-XXIV in FIG. 23;

fig. 25 is a perspective view illustrating electrode sheets of the electrode unit of the modified embodiment;

fig. 26 is a perspective view illustrating a power supply device formed by the first and second embodiments and the battery assembly thereof arranged on the lower seat; and

Fig. 27 is an exploded perspective view of fig. 26.

List of reference numerals

100. Battery connection module

100' battery connection module

1. Bearing plate

1' bearing plate

11. Lower limit strip

12. Upper limiting block

13. Upper limit clamping hook

14. Positioning column

15. Accommodating recess

16. Mounting base

161. Buckle hook

17. Containing groove

17' containing groove

171. Retaining block

171a slot

172. Limiting groove

173. Insertion frame

174. Buckle hook

18. Alignment bump

19. Fastening bump

110. Accommodating part

1101. First step portion

1102. Second step

1103. Retaining post

2. Converging piece

21. Electrode connection part

22. Arched buffer part

23. Extension tab

231. Concave part

24. Overlap joint

3. Flexible circuit board

31. Body

311. Positioning hole

312. Bending buffer part

313. Upper folding part

32. Extension arm

33. Temperature sensor

34. Attachment piece

35. Voltage acquisition sheet

4. Electrode unit

41. Electrode plate

41' electrode plate

410. Insertion convex part

411. Perforating the hole

412. Insulating layer

413. Setting hole

42. Electric power connecting seat

421. First conductive ring

422. Casing pipe

422a internal threaded hole

422b outer annular surface

422c lower flange

422d latch

423. Outer casing

424. First alignment structure

424a alignment hole

425. First fastening structure

425a fastening block

426. Insulation protection ring

43. Holder for electrode sheet

Holder for 43' electrode sheet

431. Holding end

432. Fixed end

433. Insulating layer

44. Protecting cover

441. Cover body

442. Second fastening structure

5. Electric power connecting strip

5' power connection strip

51. Conductive strip

511. Conductive part

512. Insulating outer layer

52. Electric power connector

521. Conductive block

521a perforation

522. Second conductive ring

523. Upper shell

523a open pore

523b buckling hole

524. Lower shell

524a buckling block

525. Fastening piece

525a insulated header

525b insulating tail

525c external thread portion

526. Plug-in part

527. Second alignment structure

527a alignment block

528. Second fastening structure

528a fastening piece

528b snap-fit recess

53. Protective pad

54. Fixing piece

541. Strap portion

542. Fixing part

6. Upper cover

61. Alignment groove

62. Fastening hole

63. Opening of connecting seat

64. Connector opening

7. Electric connector

70. Buckling groove

71. Pin

72. Protective cover

8. Backboard

9. Bridging type confluence piece

91. First confluence section

92. Second confluence section

93. Bridging segment

94. Insulating layer

10. Holder for bridging section

101. Holding end

102. Fixed end

103. Insulating layer

20. Battery pack

201. Battery cell

202. First battery pack

203. Second battery pack

30. Battery housing

301. End plate

302. Protective frame

200. Power supply device

200a lower seat

D1 In the length direction

D2 In the width direction

D3 In the up-down direction

Detailed Description

Before the present utility model is described in detail, it should be noted that in the following description, like elements are denoted by the same reference numerals.

Referring to fig. 1 to 3, a battery connection module 100 according to a first embodiment of the present utility model is suitable for being electrically connected to a battery pack 20, the battery pack 20 has a plurality of batteries 201 (12 in the first embodiment), and the battery pack 20 is accommodated in a battery accommodating case 30 together with a protection frame 302 provided at two ends, and the battery accommodating case 30 has end plates 301 at two ends. 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 power connection bars 5, and an upper cover 6.

The carrier tray 1 extends along a length direction D1 and is adapted to be disposed on the battery pack 20, and is made of an insulating material. The bus members 2 are assembled to the carrier tray 1 in two rows along a width direction D2 perpendicular to the length direction D1, and are adapted to electrically connect the cells 201 of the battery pack 20. In the first embodiment, each bus bar 2 has a plurality of electrode connection portions 21 adapted to be connected to the electrodes of the battery 201, and a plurality of arch buffer portions 22 connected between the adjacent electrode connection portions 21 and arch in a direction away from the carrier tray 1 along an up-down direction D3 perpendicular to the length direction D1 and the width direction D2, the arch buffer portions 22 extending along the width direction D2, the carrier tray 1 includes a plurality of lower stopper bars 11 supported below the arch buffer portions 22 of the bus bar 2, and a plurality of upper stopper bars 12 and a plurality of upper stopper hooks 13 located above the bus bar 2, and the bus bar 2 is commonly restricted by the lower stopper bars 11, the upper stopper bars 12 and the upper stopper hooks 13.

Referring to fig. 4 and 5 in combination, the flexible circuit board 3 includes a body 31 disposed between the two rows of bus bars 2 and the carrier plate 1, a plurality of extension arms 32 extending from the body 31 toward the bus bars 2, and a plurality of temperature sensors 33 (e.g., NTC thermistors (Negative Temperature Coefficient thermistor, negative temperature coefficient thermistors)) disposed on the extension arms 32 and electrically connected to circuit traces of the flexible circuit board 3. The bus bars 2 further have an extension tab 23 extending toward the corresponding extension arms 32, and a top surface of the extension tab 23 of the bus bar 2 is formed with a recess 231 corresponding to the temperature sensor 33, in a variation, the bus bars 2 may not have the extension tab 23 but directly form the recess 231, and in another variation, the recess 231 may also be in a blind hole form, the flexible circuit board 3 further comprises a plurality of attachment pieces 34, for example, the attachment pieces 34 may be nickel, and the attachment pieces 34 are attached to the surface of the extension arm 32 opposite to the temperature sensor 33 and the bus bar 2 by, for example, welding, so that the extension arm 32 is fixed to the bus bar 2. 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, for example, a heat-conductive glue, etc., and by means of the heat-conductive filler, the heat energy on the bus bar 2 can be transferred to the temperature sensor 33, but not by way of limitation, the temperature sensor 33 electrically connected to the circuit trace of the flexible circuit board 3 is directly fixed to the extension arm 32 of the flexible circuit board 3 and directly corresponds to the recess 231 of the bus bar 2, so that assembly is simple and easy and temperature sensing is more direct and the fixation of the extension arm 32 and the busbar 2 to each other can be reinforced by attaching the attachment piece 34 to the extension arm 32 and the busbar 2.

In the first embodiment, the body 31 of the flexible circuit board 3 is further formed with a plurality of positioning holes 311, a plurality of bending buffer portions 312 recessed downward along the up-down direction D3 and extending along the width direction D2, and an upper folding portion 313 folded upward along the up-down direction D3, and the carrier tray 1 is further provided with a plurality of positioning posts 14 penetrating the positioning holes 311, a plurality of accommodating recesses 15 accommodating the bending buffer portions 312, and a mounting seat 16 adjacent to the upper folding portion 313. The positioning posts 14 may be heat fused at the ends into enlarged heads to secure the flexible circuit board 3. The battery connection module 100 further includes an electrical connector 7 electrically connected to the folded-up portion 313, and a back plate 8. The mounting base 16 is formed with two buckling hooks 161 opposite to each other along the length direction D1, the electrical connector 7 is buckled on the mounting base 16 and has two buckling grooves 70 correspondingly buckled with the buckling hooks 161 of the mounting base 16, a plurality of pins 71 positioned at the rear side and penetrating the upper folded portion 313 to be electrically connected with the circuit trace of the flexible circuit board 3, and the back plate 8 is fixed on the pins 71 and clamps the upper folded portion 313 together with the electrical connector 7 so as to strengthen the holding force between the electrical connector 7 and the upper folded portion 313. In addition, the flexible circuit board 3 further has a plurality of voltage collecting pieces 35 electrically connected to the body 31 and respectively contacting the bus members 2 to collect voltage information of the bus members 2. Status information (e.g., temperature, voltage, etc.) of the battery pack 20 can be collected by the temperature sensor 33 and the voltage collecting plate 35 of the flexible circuit board 3, and can be transferred to a battery management device (not shown) interfacing with the electrical connector 7 through the electrical connector 7 electrically connected to the flexible circuit board 3. The electrical connector 7 further has a protective cover 72 to protect the electrical connector 7 when the electrical connector 7 is not docked with the device.

Referring to fig. 3 and 5-7, the carrier tray 1 is further formed with two receiving grooves 17 at two ends of the length direction D1, each receiving groove 17 is provided with a retaining block 171, and a limiting groove 172 is formed below the retaining block 171. The two electrode units 4 are overlapped with two of the bus bars 2, and each electrode unit 4 includes an electrode sheet 41, a power connection base 42, and a holder 43 for the electrode sheet. The electrode plate 41 is disposed in the corresponding receiving groove 17 of the carrier 1 and is lapped on a lap joint portion 24 formed by the corresponding bus member 2, and an inserting convex portion 410 with a tab structure is formed at the end of the electrode plate 41, and the inserting convex portion 410 extends into the limit groove 172 below the corresponding holding block 171 to be accommodated in the limit groove 172. The power connection holder 42 is provided to the electrode sheet 41, and the electrode sheet holder 43 has a holding end portion 431 assembled to the corresponding holding block 171 to indirectly hold the corresponding electrode sheet 41 on the carrier tray 1, and a fixing end portion 432 fixed to the adjacent end plate 301 by, for example, welding. Each holding block 171 is formed with a slot 171a that accommodates the holding end 431 of the corresponding electrode tab holder 43. A plurality of interference projections which interfere with the insertion groove 171a are formed at both side edges of the holding end 431 of each electrode tab holder 43 to enhance the holding force between the electrode tab holder 43 and the insertion groove 171a. The electrode sheet 41 is provided with a greater force strength (torsion or other directional force) by the electrode sheet holder 43 to avoid displacement or vibration of the electrode sheet 41.

Referring to fig. 8 to 11, the power connection base 42 is disposed on the electrode plate 41, and the power connection base 42 has a first conductive ring 421 disposed on the electrode plate 41, a sleeve 422 disposed on the electrode plate 41 and passing through the first conductive ring 421, and a housing 423 disposed on the electrode plate 41 and located at the periphery of the first conductive ring 421. In the first embodiment, the first conductive ring 421 and the electrode plate 41 are integrally formed, but it is also possible to use two-piece combination, not limited thereto. The sleeve 422 passes through the electrode plate 41 and correspondingly passes through the first conductive ring 421. The housing 423 is formed with a first alignment structure 424 and a first fastening structure 425. The power connection strip 5 includes a conductive strip 51, and two power connectors 52 disposed at two ends of the conductive strip 51 for mating with the power connection base 42. Each of the power connectors 52 includes a conductive block 521 overlapped at the end of the conductive strip 51 and formed with a through hole 521a, a second conductive ring 522 disposed on the conductive block 521 corresponding to the through hole 521a, an upper case 523 and a lower case 524 assembled together to jointly accommodate the second conductive ring 522 and the conductive block 521, and a fastening member 525 passing through the through hole 521a of the conductive block 521 and the second conductive ring 522 and movably limited between the conductive block 521 and the upper case 523, wherein the second conductive ring 522 and the conductive block 521 are integrally constructed in the first embodiment, but the two parts may be combined. The upper case 523 and the lower case 524 may be formed of an insulating material, and in the first embodiment, the upper case 523 is formed with a plurality of fastening holes 523b at sides thereof, and the lower case 524 is formed with a plurality of fastening blocks 524a corresponding to the fastening holes 523b, thereby fastening the upper case 523 and the lower case 524 to each other for assembly with each other. The lower casing 524 is integrally formed with an inserting portion 526 located at the periphery of the second conductive ring 522, a second alignment structure 527 corresponding to and matched with the first alignment structure 424, and a second fastening structure 528 corresponding to and matched with the first fastening structure 425, wherein after the electric power connector 52 is matched with the electric power connector 42, the inserting portion 526 is inserted into the casing 423, and the fastening member 525 is assembled to the sleeve 422, so that the first conductive ring 421 and the second conductive ring 522 are contacted with each other, and the electrode plate 41 of the electrode unit 4 is electrically connected to the conductive strip 51 of the electric power connecting strip 5. The electrode tab 41 and the bus bar 2 are made of dissimilar metal materials. In the first embodiment, the electrode of the battery 201 of the battery pack 20 is made of aluminum, and the bus bar 2 is made of aluminum plate so that the bus bar 2 can be welded to the electrode of the battery 201 of the battery pack 20 more easily, but for example, the bus bar 2 may be a multi-layer aluminum structure. The electrode plates 41 overlapped with the bus bar 2 are made of solid copper material to increase the conductivity of the electrode plates 41, and the electrode plates 41 made of copper have preferable heat conduction performance and further reduce heat accumulation. The conductive strip 51 has a conductive portion 511 for overlapping the conductive bump 521, and an insulating outer layer 512 covering the conductive portion 511, wherein the conductive portion 511 is made of multiple layers of copper, the conductive portion 511 made of multiple layers of copper makes the conductive strip 51 easier to bend, and the conductive bump 521 of the power connector 52 is made of solid copper material to increase conductivity and reduce heat accumulation, thereby improving the welding performance of each component, increasing conductivity and reducing heat accumulation. However, in other variant embodiments, the bus bar 2, the electrode sheet 41, the conductive portion 511 of the conductive strip 51, and the conductive block 521 of the power connector 52 may be made of other metal materials, and the present first embodiment is not limited thereto.

The second alignment structure 527 of the power connector 52 includes four alignment blocks 527a, and the second fastening structure 528 includes four fastening tabs 528a each having a fastening recess 528b. The alignment blocks 527a and the fastening pieces 528a are disposed on the periphery of the plug portion 526 in a sequential and alternating manner. The first alignment structure 424 of the power connection base 42 includes a plurality of alignment holes 424a for respectively accommodating the alignment blocks 527a, and the first fastening structure 425 includes a plurality of fastening blocks 425a for respectively fastening with the fastening recesses 528b of the fastening plates 528 a. The fastener 525 has an insulating head portion 525a defined between the conductive block 521 and the upper case 523, an insulating tail portion 525b opposite to the insulating head portion 525a, and an external threaded portion 525c defined between the insulating head portion 525a and the insulating tail portion 525b, and in the first embodiment, the insulating head portion 525a and the insulating tail portion 525b are formed on the fastener 525 by injection molding of an insulating material. The upper case 523 has an opening 523a exposing the insulating head 525a, and the sleeve 422 has an internally threaded hole 422a for mating locking with the externally threaded portion 525c of the fastener 525, an externally annular surface 422b having a taper in an upper narrow and lower wide direction, a lower flange 422c having a larger width at the bottom, and a plurality of latches 422d adjacent to the lower flange 422 c. The sleeve 422 is easily pushed into the first conductive ring 421 from below by the outer ring surface 422b, and can be tightly matched with the inner wall surface of the first conductive ring 421, and the lower flange 422c can abut against the lower portion of the first conductive ring 421, and the latch 422d can be interferometrically clamped under the inner wall surface of the first conductive ring 421, so as to increase the holding force between the sleeve 422 and the first conductive ring 421. The power connection socket 42 further has an insulating protection ring 426, which is sleeved on the upper end opening of the sleeve 422 and is made of an insulating material, and through the insulating head portion 525a, the insulating tail portion 525b and the insulating protection ring 426, a user can be prevented from getting an electric shock in the process of butting the power connection socket 52 with the power connection socket 42. And the electric power connector 52 and the electric power connecting seat 42 can be quickly and oppositely aligned by the buckling structure and the aligning structure arranged between the electric power connector 52 and the electric power connecting seat 42 and the fastening piece 525 and the sleeve 422. In addition, the electrode unit 4 further includes a protecting cover 44 for covering the power connection base 42, the protecting cover 44 has a cover body 441 for covering the power connection base 42, and a second fastening structure 442 extending from the cover body 441 and having a structure substantially identical to the second fastening structure 528 of the power connection base 52, and the second fastening structure 442 of the protecting cover 44 can be fastened to the first fastening structure 425 so that the protecting cover 44 covers the power connection base 42, thereby protecting the power connection base 42 from being covered by the protecting cover 44 when not being in butt joint with the power connection base 52. In addition, referring to fig. 1 and 12, in the first embodiment, each power connection strip 5 further has a plurality of protection pads 53 formed on the insulating outer layer 512, and a plurality of fixing members 54 disposed on the protection pads 53 to strengthen the fixing of the conductive strip 51, each fixing member 54 has a strap portion 541 sleeved on the protection pads 53, and a fixing portion 542 for inserting or clamping in a frame of a housing, and the conductive strip 51 of the power connection strip 5 can be fixed in place by the fixing members 54 to prevent the conductive strip 51 of the power connection strip 5 from being pulled by other objects.

Referring back to fig. 1 to 3, the carrier 1 is further formed with a plurality of alignment bumps 18 and a plurality of fastening bumps 19 on two sides of the width direction D2, in the first embodiment, two alignment bumps 18 are disposed on each side, the alignment bumps 18 are inverted L-shaped to align to the edges of the battery pack 20 respectively, and the alignment bumps 18 on two sides are offset from each other in the width direction D2. The upper cover 6 is disposed above the carrier 1, and the upper cover 6 is formed with a plurality of alignment slots 61 for the alignment bumps 18 to correspondingly extend, a plurality of fastening holes 62 for the fastening bumps 19 to correspondingly fasten, two connector openings 63 respectively corresponding to the power connectors 42, and a connector opening 64 corresponding to the electrical connector 7. By the engagement of the alignment protrusions 18 and the alignment grooves 61, which are offset from each other in the width direction D2, a user can be prevented from covering the upper cover 6 on the carrier tray 1 in the wrong direction.

Referring to fig. 13 to 16, a battery connection module 100' according to a second embodiment of the present utility model is different from the battery connection module 100 according to the first embodiment in that the second embodiment has two battery packs, a first battery pack 202 and a second battery pack 203, which are respectively arranged side by side, and the number of batteries 201 of the first battery pack 202 and the second battery pack 203 is 18. The bus bars 2 are substantially divided into four rows along the width direction D2, two rows are suitable for electrically connecting the first battery pack 202, two other rows are suitable for electrically connecting the second battery pack 203, and the number of flexible circuit boards 3 is two and respectively corresponds to two rows of bus bars 2 electrically connecting the first battery pack 202 and two other rows of bus bars 2 electrically connecting the second battery pack 203. The battery connection module 100 'further includes two bridging type bus bars 9 assembled to the carrier tray 1', and two bridge segment holders 10. The two bridging type current collectors 9 are assembled on the carrying tray 1', each bridging type current collector 9 has a first current collecting section 91 adapted to be electrically connected to the first battery pack 202, a second current collecting section 92 adapted to be electrically connected to the second battery pack 203, and a bridging section 93 connected to the first current collecting section 91 and the second current collecting section 92, wherein the bridging section 93 is folded into a multi-layer structure with a reduced width, so as to reduce the width, facilitate installation and simultaneously load large current, and the bridging section 93 is of a three-layer structure in the second embodiment, but the bridging section 93 can also be of a multi-layer structure with other layers, not limited thereto. In addition, the first bus section 91, the second bus section 92 and the bridge section 93 are integrally formed in the second embodiment, and the two battery packs (the first battery pack 202 and the second battery pack 203) are directly bridged by the integrally-formed bridging member 9, so that the conventional welding point or the junction for connecting the two battery packs (the first battery pack 202 and the second battery pack 203) in series is omitted. The carrier tray 1' is provided with a receiving portion 110 at one end in the length direction D1, the receiving portion 110 has a first step 1101 and a second step 1102 at different heights to respectively support and receive the bridge segments 93 of the two bridging type confluence members 9 which are partially staggered and stacked one above the other. The bridge-section holders 10 are pressed against the edges of the bridge sections 93, respectively, each bridge-section holder 10 having a holding end 101 for holding the bridge section 93 of the corresponding bridge-type busbar 9 against the carrier plate 1' in a direct press against the bridge section 93, and a fixing end 102 adapted to be fixed, for example by welding, to an adjacent one of the end plates 301. The receiving portion 110 is further provided with three retaining posts 1103 penetrating the retaining ends 101 of the bridge segments 93 and the bridge segment holders 10, and after assembling the bridge segments 93 of the bridge segment collectors 9 and the bridge segment holders 10, the distal ends of the retaining posts 1103 can be formed into enlarged heads (not shown) by heat-fusing to thereby hold the bridge segments 93 of the bridge segment collectors 9 and the bridge segment holders 10. Further, referring to fig. 17 to 18 in combination, in the present second embodiment, the surface of the bridge section 93 where the two bridge-type current collecting members 9 are stacked is covered with the insulating layer 94, and the surface of the holding end portion 101 of the holding member 10 for the bridge section is covered with the insulating layer 103. The insulating layers 94 and 103 shown in the darkened portions may be plastic or resin, for example, and may be formed by spraying, coating, or overmolding.

Referring to fig. 19 to 20, the receiving grooves 17 'are formed at the other end of the tray 1' opposite to the receiving portion 110 in the length direction D1 and are aligned in the width direction D2. Two insertion frames 173 are disposed at each receiving groove 17', and each electrode sheet 41' is formed with an opening 411 through which the corresponding insertion frame 173 passes, and the holding ends 431 of the electrode sheet holders 43 'are correspondingly inserted into the insertion frames 173 and directly stacked on the upper surfaces of the corresponding electrode sheets 41'. The surfaces of the portions where the holding end 431 of the electrode sheet holder 43 'and the electrode sheet 41' overlap each other are provided with an insulating layer 412 and an insulating layer 433, respectively. The insulating layers 412 and 433 may be made of plastic or resin, and may be formed by spraying, coating or over-molding, or the insulating layers 412 and 433 may be an insulating sleeve assembled by sleeving, not limited thereto. In the second embodiment, each receiving groove 17' is further provided with a hook 174 for fastening the corresponding electrode sheet 41' to enhance the holding force of the electrode sheet 41 '.

Referring to fig. 21, the power connection bar 5 'of the second embodiment is different from the power connection bar 5 of the first embodiment in that the insulation head portion 525a and the insulation tail portion 525b of the power connection bar 5' are assembled to the fastening member 525, but may be constructed by using an over-molding method as in the first embodiment. The conductive portion 511 is made of solid copper, and the cross section of the portion of the conductive portion 511 covered by the insulating outer layer 512 is circular.

Referring to fig. 22 to 25, it should be noted that, in a variant embodiment, the electrode plates 41 'and the first conductive rings 421 are assembled, in this variant embodiment, each electrode plate 41' is formed with a setting hole 413, and the first conductive ring 421 of the corresponding power connection seat 42 is correspondingly inserted into the setting hole 413. The electrode plate 41' can be assembled with the first conductive ring 421 in two configurations with the front or back facing directions (as shown in fig. 25) to meet different space configuration requirements.

Referring to fig. 26 to 27, a plurality of the first embodiment and the second embodiment are assembled with the battery thereof in a housing to form a power supply device 200, in which only a lower base 200a possibly included in the housing of the power supply device is shown, and the battery packs of the first embodiment and the second embodiment are connected in series through the battery connection modules 100, 100 'and the power connection bars 5, 5' thereof, so that the power supply device 200 can provide a large current meeting the requirements. It should be noted that the arrangement of the battery connection modules 100, 100 'and the battery packs and the arrangement of the power connection bars 5, 5' are merely examples, and they can be adjusted according to the requirements. In addition, referring to fig. 1, the end plates 301 are two ends of the battery housing 30, and in an alternative embodiment, the end plates 301 may be separately disposed at two ends of the battery pack, and may not be part of the battery housing 30; in another variation, end plate 301 may be a spacer, such as lower seat 200a, for example, lower seat 200a may be provided with a plurality of spacers to configure a space for placement of a battery pack, and the spacer at the end of the battery pack may function as an end plate as described in this disclosure.

In summary, the battery connection module 100 of the present utility model directly bridges the two battery packs (the first battery pack 202 and the second battery pack 203) through the bridging busbar 9 with an integral structure, and the connection point for connecting the welding points or wires between the two battery packs (the first battery pack 202 and the second battery pack 203) in the prior art is omitted. The bridge section 93 is folded in a multi-layered structure with a reduced width in the width direction D2 to reduce the width for installation and at the same time to be able to carry a large current. In addition, the temperature sensor 33 electrically connected to the circuit trace of the flexible circuit board 3 is directly fixed on the extension arm 32 of the flexible circuit board 3 and is directly correspondingly placed in the recess 231 of the busbar 2, so that the assembly is simple and easy and the temperature sensing is more direct. In addition, the electrode sheet 41, 41' is provided with a greater force strength (torsion or other directional force) by the electrode sheet holder 43, 43' to avoid displacement or vibration of the electrode sheet 41, 41 '. Furthermore, the fastening structure and the alignment structure between the power connector 52 and the power connector 42, and the fastener 525 and the sleeve 422 enable the power connector 52 and the power connector 42 to be quickly aligned. The electrode tabs 41 and 41' are overlapped with the bus bar 2 made of dissimilar metal materials, thereby improving the welding performance of each member, increasing the conductivity, and reducing the heat accumulation.

However, the above-mentioned embodiments are merely examples of the present utility model, and the present utility model is not limited to the embodiments, but is intended to cover modifications and equivalent arrangements included within the scope of the utility model as defined in the appended claims and their equivalents.

Claims

1. A battery connection module adapted for electrical connection to a battery pack having a plurality of batteries and end plates disposed at both ends of the battery pack, the battery connection module comprising:

a bearing plate, which is provided with a containing groove;

a plurality of converging pieces assembled on the bearing plate; and

an electrode unit lapped on one of the confluence members, the electrode unit comprising an electrode plate arranged in the containing groove of the bearing plate and lapped on the corresponding confluence member, an electric power connecting seat arranged on the electrode plate, and a holder for the electrode plate having a holding end and a fixed end suitable for being fixed on the end plate，The holding end of the electrode sheet holder is assembled in the receiving groove of the carrier plate and holds the electrode sheet on the carrier plate.

2. The battery connection module according to claim 1, wherein a holding end portion of the electrode tab holder is stacked on an upper surface of the electrode tab.

3. The battery connection module according to claim 2, wherein the surfaces of the holding end portions of the electrode tab holding members and the portions of the electrode tabs that overlap each other are provided with insulating layers, respectively.

4. The battery connection module according to claim 2 or 3, wherein an insertion frame is provided at the receiving groove, and the holding end portion of the electrode tab holder is inserted into the insertion frame.

5. The battery connection module of claim 4, wherein the electrode tab is formed with an opening through which the corresponding insertion frame passes.

6. The battery connection module of claim 5, wherein the receiving groove is provided with a hook for hooking the electrode tab.

7. The battery connection module according to claim 1, wherein the receiving groove is provided with a holding block, the distal end of the electrode tab protrudes below the corresponding holding block, and the holding end of the electrode tab holder is assembled to the holding block.

8. The battery connection module according to claim 7, wherein the holding block is formed with a limit groove corresponding to the end of the electrode tab, and the holding block is formed with a slot corresponding to the holding end of the holder for the electrode tab.

9. The battery connection module according to claim 8, wherein a side edge of the holding end portion of the electrode tab holder is formed with an interference bump that interferes with the insertion groove.