CN219419407U - Bridging and converging assembly and battery - Google Patents

Abstract

The utility model provides a bridging and converging assembly and a battery, and relates to the technical field of batteries. The bridging busbar assembly comprises a bridging piece and two pole busbars electrically connected with the bridging piece, wherein at least one pole busbar is detachably connected with the bridging piece, and the extending direction of the bridging piece extending from one of the two pole busbars to the other is a bridging direction. The battery provided by the utility model adopts the bridging and converging component. The bridging busbar assembly and the battery provided by the utility model can solve the technical problems of complex welding process, high welding cost and high maintenance difficulty of the bridging busbar in the prior art.

Description

Bridging and converging assembly and battery

Technical Field

The utility model relates to the technical field of batteries, in particular to a bridging and converging assembly and a battery.

Background

In order to improve the energy density of the battery pack, a plurality of battery cells are arranged in a row to form a battery cell group, the battery cells are arranged in an array in the box body, and the battery cells are electrically connected through a bridging busbar. However, the structure of the bridging busbar is complex, and the integrated forming and processing cost is high; generally, a bridging busbar is welded on two cell busbars to be switched to achieve the aim of switching, but welding requires high assembly precision of a workpiece, and requires no significant deviation of the position of a welding beam on the workpiece, and the welding process is complex, difficult, poor in operability and unfavorable for maintenance.

In addition, the existing busbar adopts a single copper bar, so that a cell group with high overcurrent requirement is difficult to meet, and if the occupation space of the width of the copper is increased greatly, the energy density of the battery pack is not improved.

Disclosure of Invention

The utility model aims to provide a bridging busbar assembly and a battery, which can solve the technical problems of complex welding process, high welding cost and high maintenance difficulty of the bridging busbar.

To achieve the purpose, the utility model adopts the following technical scheme:

a bridging busbar assembly comprises a bridging piece and two pole busbars which are respectively and electrically connected with the bridging piece, wherein at least one pole busbar is detachably connected with the bridging piece, and the extending direction of the bridging piece extending from one pole busbar to the other pole busbar is a bridging direction.

Optionally, the bridging piece comprises a bridging part and a pole busbar connecting part connected with the bridging part; the number of the pole bus bar connecting parts is two, and the pole bus bar connecting parts are respectively connected with the bridging parts; at least one of the pole busbar connecting parts is provided with a first clamping groove corresponding to the pole busbar, and the first clamping groove elastically clamps the pole busbar.

Optionally, the pole busbar includes a pole mounting portion and a bridging connection portion disposed at one end of the pole mounting portion, and the bridging connection portion is inserted into the first clamping groove.

Optionally, along the bridging direction, two pole buses are respectively arranged at two ends of the bridging piece.

Optionally, the first clamping groove is formed in at least one of the pole busbar connection parts, and a cross section of the bridging piece connection part perpendicular to the bridging direction is in a shape of a straight line or an L.

Optionally, the bridging portion and at least one of the pole busbar connection portions are detachably connected, the bridging portion is inserted into the first clamping groove, and the first clamping groove elastically clamps the bridging portion and the bridging member connection portion.

Optionally, the bridging member has a bending portion bent perpendicularly to the bridging direction, and the bending portion extends along the bridging direction.

Optionally, the bridging member has a plurality of bending parts, and a cross section of the bending parts perpendicular to the bridging direction is U-shaped.

Optionally, the post busbar includes post installation department and sets up the bridging connection portion of post installation department one end, at least one be provided with the second draw-in groove on the bridging connection portion, the second draw-in groove elasticity presss from both sides tightly the bridging.

Optionally, the post busbar is provided with a plug groove in plug fit with the battery core post, the post busbar comprises a connecting plate part and a bending part forming the plug groove, and the connecting plate part is connected with the bending part.

The utility model provides a battery, includes jumper connection assembly, separation roof beam and box, the box has the chamber that holds that is used for holding battery monomer, the separation roof beam will hold the chamber and separate into a plurality of accommodation unit, two the utmost point post busbar respectively with two sets of battery monomer's utmost point post electricity is connected. The bridging busbar assembly comprises a bridging piece and two pole busbars which are respectively and electrically connected with the bridging piece, at least one pole busbar is detachably connected with the bridging piece, and the extending direction of the bridging piece extending from one pole busbar to the other pole busbar is a bridging direction.

Optionally, the separation beam and/or the side plate of the box body are provided with avoiding grooves, and the bridging piece extends into the avoiding grooves and is connected with the separation beam and/or the box body in an insulating manner.

The bridging and converging assembly and the battery provided by the utility model have the beneficial effects compared with the prior art that:

at least one pole busbar in the bridging busbar assembly is detachably connected with the bridging piece, so that the assembly difficulty between the pole busbar and the bridging piece can be simplified, and the assembly cost is reduced; and moreover, the disassembly and the separation of the pole busbar and the bridging piece can be facilitated, the bridging busbar assembly is convenient to maintain, and the maintenance cost is reduced. Based on the method, the technical problems of complex welding process, high welding cost and high maintenance difficulty of the bridging busbar in the prior art can be solved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a jumper assembly according to a first embodiment of the present application;

fig. 2 is a schematic structural view of a battery cell provided in the present application;

FIG. 3 is an enlarged schematic view of the structure shown at A in FIG. 1;

FIG. 4 is a schematic view of a jumper assembly according to other embodiments of the first embodiment of the present application;

FIG. 5 is a schematic view of an exploded construction of the crossover assembly shown in FIG. 4;

FIG. 6 is a schematic view of another cross-over bus assembly according to other embodiments of the first embodiment of the present application;

FIG. 7 is a schematic view of a further cross-over bus assembly according to other embodiments of the first embodiment of the present application;

FIG. 8 is a schematic view of a construction of a jumper assembly according to another embodiment of the first embodiment of the present application;

fig. 9 is a schematic view showing a partial structure of a battery provided in a second embodiment of the present application;

fig. 10 is a partial schematic structure of another battery provided in a second embodiment of the present application;

fig. 11 is a partial schematic structural view of a case of a battery provided in a second embodiment of the present application;

fig. 12 is a partial schematic structural view of a battery provided in a second embodiment of the present application;

fig. 13 is a schematic structural view of a jumper assembly according to a second embodiment of the present application. Icon: 10-battery; 11-battery cells; 101-pole; 12-a box body; 121-avoiding grooves; a 14-jumper bus assembly; 100-bridging pieces; 110-a crossover; 120-post buss connection; 130-a first card slot; 140-bending parts; 150-insulating member; 200-pole bus bars; 210-pole mounting portion; 211-a connection plate portion; 212-a bend; 2121-plug-in grooves; 220-crossover connection; 230-second card slot.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, if the terms "upper", "lower", "inner", "outer", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present utility model and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus it should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.

It should be noted that the features of the embodiments of the present utility model may be combined with each other without conflict.

First embodiment

Referring to fig. 1, a bridging and converging assembly 14 is provided in the present embodiment, the bridging and converging assembly 14 is applied to a battery 10, wherein the battery 10 includes a plurality of battery cells 11, the plurality of battery cells 11 are arranged to form a plurality of rows, a plurality of battery cells 11 are disposed in any one row, and the bridging and converging assembly 14 can electrically connect the battery cells 11 in any two rows in series. The jumper bus assembly 14 of the embodiment can solve the technical problems of complex welding process, high welding cost and high maintenance difficulty of the jumper bus in the prior art.

In this embodiment, the jumper bus assembly 14 includes the jumper 100 and two post buses 200 electrically connected to each of the jumper 100, at least one of the post buses 200 is detachably connected to the jumper 100, and an extending direction in which the jumper 100 extends from one of the two post buses 200 to the other is a jumper direction. Referring to fig. 1 and 2 in combination, two electrode busses 200 are used to connect with the electrode 101 on the battery cell 11 to electrically connect with the battery cell 11; the two pole buses 200 correspond to the two rows of battery cells 11, respectively, that is, one pole bus 200 is connected to one battery cell 11 of one row of battery cells 11, and the other pole bus 200 is connected to one battery cell 11 of the other row of battery cells 11. The crossover 100 is then used to make electrical connection to the two pole buss bars 200.

In the jumper bus assembly 14, at least one pole bus bar 200 is detachably connected with the jumper 100, so that the assembly difficulty between the pole bus bar 200 and the jumper 100 can be simplified, and the assembly cost can be reduced; and, can make things convenient for the dismantlement separation of utmost point post busbar 200 and crossover assembly 100, conveniently maintain crossover assembly 14, reduce cost of maintenance. Based on the method, the technical problems of complex welding process, high welding cost and high maintenance difficulty of the bridging busbar in the prior art can be solved. That is, the welding mode in the prior art is replaced by the detachable connection mode, so that the purposes of reducing the assembly difficulty and the disassembly difficulty can be achieved, and the assembly cost and the maintenance cost can be reduced.

Optionally, referring to fig. 1 and 3 in combination, in the present embodiment, the crossover 100 includes a crossover portion 110 and a post bus connection portion 120; the number of the pole busbar connection parts 120 is two, and the pole busbar connection parts are respectively connected with the bridging parts 110; the at least one post bus bar connection part 120 is provided with a first clamping groove 130 corresponding to the post bus bar 200, and the first clamping groove 130 elastically clamps the post bus bar 200.

That is, at least one of the post bus bars 200 is detachably connected to the post bus bar connection part 120 by being caught in the first catching groove 130, and the two post bus bar connection parts 120 are integrally connected by the bridging part 110. During assembly, the pole bus bar 200 is clamped into the first clamping groove 130, so that the assembly of the bridging bus assembly 14 can be realized; removal of the post buss 200 from the first card slot 130 allows for removal of the jumper buss assembly 14. Therefore, the assembly and disassembly modes of the bridging and converging assembly 14 are simple, the operation is easy, and the purposes of reducing the assembly cost and the maintenance cost can be achieved.

It should be noted that, the first clamping groove 130 may be disposed on one of the post bus bar connection portions 120, and at this time, the corresponding one of the post bus bars 200 is detachably connected to the post bus bar connection portion 120 by being clamped into the first clamping groove 130. The first clamping grooves 130 may be disposed on the two pole busbar connection portions 120, and the two pole busbars 200 may be detachably connected to the two pole busbar connection portions 120 by being clamped into the first clamping grooves 130.

In the present embodiment, the post bus bar 200 includes a post mounting portion 210 and a crossover connection portion 220 provided at one end of the post mounting portion 210, the crossover connection portion 220 being inserted into the first card slot 130. The pole mounting portion 210 is used for electrically connecting with the pole 101 on the battery cell 11, and the bridging member connecting portion 220 is connected with the pole busbar connecting portion 120.

Optionally, the post bus bar 200 is provided with a socket 2121 that is in plug-fit with the battery post 101, and the post bus bar 200 includes a connection plate portion 211 and a bending portion 212 that forms the socket 2121, where the connection plate portion 211 is connected to the bending portion 212. By inserting the pole 101 into the insertion groove 2121, the pole 101 can be elastically clamped by the bent portion 212, and the stability of the assembly of the pole busbar 200 to the battery cell 11 can be ensured. It should be appreciated that in other embodiments of the present embodiment, the provision of the bent portion 212 may be eliminated, that is, the electrical connection to the pole 101 may be achieved by welding the direct pole busbar 200 to the pole 101.

Alternatively, two post bus bars 200 are provided at both end portions of the crossover 100, respectively, in the crossover direction. It is thereby possible to facilitate connection of the two pole buses 200 with the battery cells 11 of the two rows, respectively. It should be appreciated that in other embodiments, the arrangement positions of the two pole buses 200 may be adjusted, for example, one of the pole buses 200 is arranged at a middle position of the crossover 100, or the like.

In addition, in the present embodiment, the cross-section of the bridging member connecting portion 220 perpendicular to the bridging direction is in a straight shape or an L shape.

Alternatively, referring to fig. 6, in some embodiments of the present application, the bridging portion 110 is detachably connected to the at least one pole busbar connection portion 120, the bridging portion 110 is inserted into the first clamping groove 130, and the first clamping groove 130 elastically clamps the bridging portion 110 and the bridging member connection portion 220.

It should be noted that, in the embodiment, the first clamping grooves 130 are disposed on the two pole bus connection portions 120, and two ends of the bridging portion 110 along the bridging direction are clamped into the first clamping grooves 130. That is, the bridge portion 110 and the post bus bar 200 are detachably connected to the post bus bar connection portion 120 by being inserted into the first card slot 130, so that any one of the bridge portion 110, the post bus bar connection portion 120 and the post bus bar 200 can be detached for maintenance, and maintenance and replacement costs can be reduced.

It should be understood that only one of the post bus bar connection portions 120 may be provided with the first clamping groove 130, and one end of the bridging portion 110 and one of the post bus bars 200 may be clamped into the first clamping groove 130.

In addition, referring to fig. 4 and 5 in combination, in other implementations of the present embodiment, the post bus bar 200 includes a post mounting portion 210 and a bridging member connecting portion 220 disposed at one end of the post mounting portion 210, and at least one bridging member connecting portion 220 is provided with a second clamping groove 230, where the second clamping groove 230 elastically clamps the bridging member 100.

It should be noted that, in the jumper bus assembly 14 provided in the present application, in some embodiments, the first clamping groove 130 may be provided on the jumper 100, so that the removable connection with the jumper 100 may be achieved by the pole bus bar 200 being clamped into the first clamping groove 130; in other embodiments, the second clamping groove 230 may be formed on the post bus bar 200, and the bridging member 100 may be clamped into the second clamping groove 230 to achieve the detachable connection with the post bus bar 200.

In addition, referring to fig. 7 and 8 in combination, in the present embodiment, the bridging member 100 has a bending portion 140 bent perpendicular to the bridging direction, and the bending portion 140 extends along the bridging direction. Through the arrangement of the bending part 140, the cross-sectional area of the bridging member 100 can be increased, the overcurrent area of the bridging member 100 can be increased under the condition that the bridging member 100 and the electrode post bus bar 200 are electrically connected with the electrode post 101 of the battery cell 11, the space occupation can be reduced, and the performance of the battery 10 is greatly improved.

Alternatively, in some embodiments, the crossover 100 has a plurality of folds 140, the folds 140 being U-shaped in cross-section perpendicular to the crossover direction, as shown in FIG. 7. It should be appreciated that in other embodiments of the present application, the U-shaped bending portion 140 may be pressed to form a curled edge, as shown in fig. 8, so that the cross-sectional area can be lifted, thereby achieving the purpose of lifting the flow area.

In summary, in the jumper bus assembly 14 provided in the embodiment of the present application, at least one post bus bar 200 is detachably connected with the jumper 100, so that the assembly difficulty between the post bus bar 200 and the jumper 100 can be simplified, and the assembly cost can be reduced; and, can make things convenient for the dismantlement separation of utmost point post busbar 200 and crossover assembly 100, conveniently maintain crossover assembly 14, reduce cost of maintenance. Based on the method, the technical problems of complex welding process, high welding cost and high maintenance difficulty of the bridging busbar in the prior art can be solved. In addition, by forming the bent portion 140 on the crossover 100 to increase the cross-sectional area of the crossover 100 perpendicular to the crossover direction, thereby increasing the flow-through area of the crossover 100, the performance of the battery 10 may be improved.

Second embodiment

Referring to fig. 9 and 10, a battery 10 is provided in the present embodiment, the battery 10 employs the jumper bus bar assembly 14 provided in the first embodiment, and the battery 10 can solve the technical problems of complicated jumper bus bar welding process, high welding cost and high maintenance difficulty in the prior art.

The battery 10 includes a plurality of battery cells 11, and the plurality of battery cells 11 are arranged to form a plurality of rows, and a plurality of battery cells 11 are disposed in any one of the rows. The bridging and converging component 14 can electrically connect any two rows of the battery cells 11 in series, preferably, the bridging and converging component 14 electrically connects two adjacent rows of the battery cells 11 in series.

Further, referring to fig. 11 and 12, the battery 10 further includes a separation beam (not shown) and a case 12, wherein the separation beam and/or a side plate of the case 12 is provided with a avoiding groove 121, and the bridging member 100 extends into the avoiding groove 121 and is connected with the separation beam and/or a side edge of the case 12 in an insulating manner. The bridging member 100 is avoided through the avoiding groove 121, so that the bridging member 100 is conveniently assembled in the box body 12; and, the reduction of the entire volume of the battery 10 can be facilitated. Referring to fig. 13, an insulating member 150 is disposed on the bridging member 100 to protect the bridging member 100, and the insulating member 150 may serve as an electrical insulator to prevent the bridging busbar assembly 14 from shorting to the side of the box. In addition, the insulating member 150 may provide some cushioning in the event that the crossover 100 is in contact with the dividing beam or box 12 to prevent damage to the crossover 100 caused by contact of the crossover 100 with the box 12 or dividing beam.

It should be noted that, and/or refer to, the avoidance groove 121 may be formed only on the dividing beam to assemble and avoid the bridging member 100; the avoidance groove 121 may be formed only on the side plate of the case 12 to assemble and avoid the bridging member 100; the separation beam and the side plates of the box body 12 may also be provided with avoiding grooves 121 for assembling and avoiding the bridging member 100.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present utility model should be included in the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims (12)

1. A crossover bus assembly comprising a crossover and two pole buses electrically connected to the crossover respectively, at least one of the pole buses being detachably connected to the crossover, the crossover extending in a crossover direction from one of the two pole buses to the other.

2. The crossover bus assembly of claim 1, wherein the crossover includes a crossover portion and a post bus connection portion connected to the crossover portion; the number of the pole bus bar connecting parts is two, and the pole bus bar connecting parts are respectively connected with the bridging parts; at least one of the pole busbar connecting parts is provided with a first clamping groove corresponding to the pole busbar, and the first clamping groove elastically clamps the pole busbar.

3. The crossover assembly of claim 2, wherein the post bus bar includes a post mounting portion and a crossover connection portion disposed at one end of the post mounting portion, the crossover connection portion being inserted into the first card slot.

4. The crossover assembly of claim 2, wherein two of the pole buss bars are disposed at respective ends of the crossover along the crossover direction.

5. The crossover assembly of claim 3, wherein at least one of the pole buss connection portions is provided with the first card slot, and a cross section of the crossover connection portion perpendicular to the crossover direction is in a straight or L-shape.

6. The jumper bus assembly of claim 3, wherein the jumper section and at least one of the post bus bar connections are removably connected, the jumper section being inserted into the first slot, the first slot resiliently clamping the jumper section and the jumper connection.

7. The crossover bus assembly of claim 1, wherein the crossover has a bend perpendicular to the crossover direction, the bend extending along the crossover direction.

8. The jumper bus assembly of claim 7, wherein the jumper member has a plurality of bent portions having a U-shaped cross-section perpendicular to the jumper direction.

9. The crossover assembly of claim 1, wherein the post buss bar comprises a post mounting portion and a crossover connection portion disposed at one end of the post mounting portion, at least one of the crossover connection portions being provided with a second clamping groove that resiliently clamps the crossover.

10. The jumper bus assembly of any of claims 1-9, wherein the post bus is provided with a mating slot for mating with a cell post, the post bus comprising a connecting plate portion and a curved portion forming the mating slot, the connecting plate portion connecting the curved portion.

11. A battery comprising the crossover assembly of any one of claims 1-10, a dividing beam and a housing, the housing having a receiving cavity for receiving a battery cell, the dividing beam dividing the receiving cavity into a plurality of receiving cells, two of the pole buss bars electrically connected to two sets of poles of the battery cell, respectively.

12. The battery according to claim 11, wherein the separation beam and/or the side plate of the case body are provided with avoiding grooves, and the bridging member extends into the avoiding grooves and is connected with the separation beam and/or the case body in an insulating manner.