CN106571440A - Battery pack - Google Patents

Abstract

The invention provides a battery assembly, including a battery module, a base assembly and a bus assembly. In the battery assembly provided by the present invention, the positive pole of the single battery is electrically connected to the positive busbar through the positive connector and the conductive column, and the negative pole of the single battery is electrically connected to the negative busbar through the negative connector, realizing The positive and negative poles of the battery module are connected wirelessly on the same side, which simplifies the internal structure of the battery pack; and the connection between the positive pole connector and the conductive column, and the connection between the single battery and the negative pole connector are elastic Connection, easy disassembly and assembly, strong buffer capacity, more reliable connection.

Description

a battery pack

【Technical field】

The invention relates to the technical field of batteries, in particular to a battery assembly.

【Background technique】

The power battery is one of the core energy storage devices of various electronic products. In order to achieve the voltage and power required by various electronic products, multiple single batteries are usually connected in series and parallel through the bus circuit board. However, the connection between the single battery and the bus circuit board is mainly a bolt connection. The bolt connection is to screw the single battery to the bus board. The positive and negative directions of each single battery have a strict correspondence with the design of the bus board. , the structure is complicated, the installation is difficult, the maintenance operation is complicated, and the disassembly and maintenance are inconvenient.

In view of this, it is necessary to provide a new type of battery assembly to overcome the above defects.

【Content of invention】

The object of the present invention is to provide a battery assembly with simple fixing structure of single batteries, reliable connection and easy disassembly and maintenance.

In order to achieve the above object, the present invention provides a battery assembly, including a battery module, a base assembly, and a manifold assembly; the battery module includes a plurality of single cells, and the single cells include a positive terminal surface and a side wall ; The base assembly includes a fixed base, a positive connector, a negative connector and a conductive column; the fixed base is provided with a receiving hole; the positive connector includes an upper clamping ring, a lower clamping ring and connecting the upper The clamping ring and the plurality of elastic pieces of the lower clamping ring, the positive connector is welded on the positive end surface; the negative connector includes a clamping piece, a negative clamping ring and a negative soldering piece. The clamping piece and the negative clamping ring are accommodated in the receiving hole, and the negative soldering piece protrudes from the receiving hole; the bus plate assembly includes a negative bus plate, an insulating plate and a positive bus that are sequentially stacked. plate, the fixing seat is set on the negative manifold; the negative manifold is provided with a welding area, and the negative soldering piece is welded to the welding area; the negative manifold and the insulating plate are also provided with a through hole, the conductive column is accommodated in the through hole and the conductive column is welded to the positive busbar and electrically connected to the positive busbar; the single battery is accommodated at one end of the positive terminal surface In the receiving hole; the upper clamping ring and the lower clamping ring cover the conductive column, and the clamping piece is clamped on the side wall of the single battery.

In a preferred embodiment, the fixing seat is in the shape of a cuboid and has a top surface and a bottom surface opposite to the top surface, and the receiving hole passes through the top surface and the bottom surface.

In a preferred embodiment, the number of the receiving holes corresponds to the number of the single batteries, that is, each single battery is correspondingly accommodated in one receiving hole.

In a preferred embodiment, the positive connector further includes a positive soldering piece, the positive soldering piece extends from the edge of the upper clamping ring in a direction away from the central axis of the upper clamping ring, the positive soldering The tab is welded to the positive end surface, and the positive solder tab is electrically connected to the positive pole of the single battery.

In a preferred embodiment, the number of the positive electrode soldering pieces is three and they are evenly spaced on one side of the upper clamping ring, the upper clamping ring, the lower clamping ring, the elastic piece and the positive electrode soldering piece One piece.

In a preferred embodiment, the negative welding piece is triangular, the welding area is triangular, and the negative welding piece is electrically connected to the welding area by means of laser spot welding.

In a preferred embodiment, the single battery is cylindrical, the receiving hole is circular, the upper clamping ring and the lower clamping ring are circular, and the diameter of the receiving hole is the same as that of the upper clamping ring. The diameters of the holding ring and the lower holding ring correspond to the diameter of the single battery.

In a preferred embodiment, the elastic piece is bent in a direction away from the central axis of the upper clamping ring and the lower clamping ring to form an arc, the cross section of any position of the elastic piece is circular and the elastic piece The diameter of the cross-section at any position is greater than the diameters of the upper and lower snap rings.

Compared with the prior art, in the battery assembly provided by the present invention, the positive pole of the single battery is electrically connected to the positive bus plate through the positive connector and the conductive column, and the negative pole of the single battery is connected to the negative pole through the negative connector. The boards are electrically connected to realize the wireless connection of the positive and negative poles of the battery module on the same side, which simplifies the internal structure of the battery assembly; The connecting parts are all elastically connected, which is convenient for disassembly and assembly, has strong cushioning capacity, and is more reliable in connection.

【Description of drawings】

Fig. 1 is the exploded schematic view of the battery assembly provided by the present invention;

Figure 2 is a schematic cross-sectional view of the assembly of the battery pack provided by the present invention;

3 is a schematic structural view of the positive connector of the battery assembly provided by the present invention;

4 is a schematic structural view of the negative connector of the battery assembly provided by the present invention;

FIG. 5 is a schematic top view of the fixing seat and the negative bus plate of the battery assembly provided by the present invention.

【detailed description】

In order to make the object, technical solution and beneficial technical effects of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific implementations described in this specification are only for explaining the present invention, not for limiting the present invention.

As shown in FIG. 1 , the battery assembly 100 provided by the present invention includes a battery module 10 , a base assembly 20 and a manifold assembly 30 .

The battery module 10 includes a plurality of single cells 11, the single cells 11 are cylindrical, the single cells 11 include a positive end face 111, a negative end face 112 and a side wall 113, the positive end face 111 Opposite to the negative end surface 112 and the side wall 113 connects the positive end surface 111 and the negative end surface 112 . Specifically, the positive terminal surface 111 is the positive pole of the single battery 11 , and the negative terminal surface 112 and the side wall 113 are both negative poles of the single battery 11 .

The base assembly 20 includes a fixing seat 21 , a positive connecting piece 22 , a negative connecting piece 23 and a conductive post 24 .

Please also refer to FIG. 2 , the fixed seat 21 is rectangular parallelepiped, has a top surface 211 and a bottom surface 212 opposite to the top surface 211, and the fixed seat 21 is provided with a hole extending through the top surface 211 and the bottom surface 212. The receiving hole 213 is circular, the diameter of the receiving hole 213 corresponds to the diameter of the single battery 11, and the end of the single battery 11 close to the positive end surface 111 is stored in the inside the receiving hole 213. Specifically, the number of the receiving holes 213 corresponds to the number of the single batteries 11 , that is, each single battery 11 is correspondingly stored in one receiving hole 213 .

Please refer to FIG. 3 , the positive connector 22 includes an upper clamping ring 221, a lower clamping ring 222 and a plurality of elastic pieces 223 connecting the upper clamping ring 221 and the lower clamping ring 222, the multiple Two elastic pieces 223 are evenly spaced between the upper clamping ring 221 and the lower clamping ring 222, and the elastic pieces 223 are bent away from the central axis of the upper clamping ring 221 and the lower clamping ring 222. Forming an arc, the cross-section at any position of the elastic piece 223 is circular and the diameter of the cross-section at any position of the elastic piece 223 is larger than the diameters of the upper clamping ring 221 and the lower clamping ring 222 . Specifically, the positive electrode connector 22 also includes a positive electrode soldering piece 224, the positive electrode welding piece 224 extends from the edge of the upper clamping ring 221 to a direction away from the central axis of the upper clamping ring 221, the positive electrode The soldering piece 224 is welded to the positive end surface 111 , and the positive electrode welding piece 224 is electrically connected to the positive electrode of the single battery 11 . Specifically, the upper clamping ring 221 and the lower clamping ring 222 are circular, and the diameters of the upper clamping ring 221 and the lower clamping ring 222 correspond to the diameter of the single battery 11 . In this embodiment, the number of the positive soldering pieces 224 is three and they are evenly spaced and vertically arranged on one side of the upper clamping ring 221. The upper clamping ring 221, the lower clamping ring 222, the elastic piece 223 and the positive soldering piece 224 are integrally formed.

Please also refer to FIG. 4 , the negative electrode connector 23 includes a holding piece 231, a negative electrode holding ring 232 and a negative electrode soldering piece 233, and the holding piece 231 and the negative electrode holding ring 232 are accommodated in the receiving hole 213, the holding pieces 231 are evenly spaced on one side of the negative holding ring 232, and the holding pieces 231 are used to hold the single battery 11; the diameter of the negative holding ring 232 Corresponding to the diameter of the receiving hole 213 , the negative clamping ring 232 covers the end of the single battery 11 close to the positive end surface 111 , and the clamping piece 231 is clamped on the single battery 11 The side wall 113 of the negative electrode soldering piece 233 is arranged at intervals on the other side of the negative electrode holding ring 232, and the negative electrode soldering piece 233 protrudes from the receiving hole 213. In this embodiment, the negative electrode soldering piece Sheet 233 is triangular in shape. In this embodiment, the holding piece 231 , the negative electrode holding ring 232 and the negative electrode welding piece 233 are integrally formed, and the negative electrode welding piece 233 is perpendicular to the holding piece 231 and the negative electrode holding ring 232 . The number of the negative electrodes 233 is four and evenly distributed on one side of the negative electrode holding ring 232 .

The conductive post 24 is cylindrical, and the conductive post 24 can cooperate with the anode connector 22 , that is, the upper clamping ring 221 and the lower clamping ring 222 cover the conductive post 24 . In this embodiment, the material of the conductive pillar 24 is copper.

1 and 5, the manifold assembly 30 includes a negative manifold 31, an insulating plate 32, and a positive manifold 33 stacked in sequence, and the manifold 30 is arranged below the base assembly 20. The fixing seat 21 is disposed on the negative bus plate 31 . The negative electrode bus plate 31 is provided with a welding area 311, the negative electrode welding piece 233 is against the welding area 311, and the negative electrode welding piece 233 is electrically connected to the welding area 311; the negative electrode bus plate 31 The insulating plate 32 also defines a through hole 312 , the conductive post 24 is accommodated in the through hole 312 and the conductive post 24 is welded to the positive bus plate 33 and electrically connected to the positive bus plate 33 . The insulating plate 32 separates the negative bus plate 31 from the positive bus plate 33 to ensure the insulation between the negative bus plate 31 and the positive bus plate 33 . In this embodiment, the negative welding piece 233 is electrically connected to the welding area 311 by means of laser spot welding, and the welding area 311 is triangular in shape, which is convenient for welding.

When assembling, the positive electrode connector 22 is first welded to the positive terminal surface 111 of the single battery 11, the conductive column 24 is welded to the positive electrode bus plate 33 and passes through the through hole 312; then the negative electrode is connected The component 23 is put into the receiving hole 213 of the fixing seat 21, and the fixing seat 21 is arranged on the manifold assembly 30, and the negative soldering piece 233 is electrically connected to the welding area 311 of the negative manifold 31. ; Finally, put the single battery 11 with the positive connector 22 into the receiving hole 213, the positive connector 22 covers the conductive column 24, and the side wall 113 of the single battery 11 is clamped on the The negative holding ring 232 of the negative connecting member 23 is described above.

In the battery assembly 100 provided by the present invention, the positive electrode of the single battery 11 is electrically connected to the positive electrode bus plate 33 through the positive electrode connector 22 and the conductive column 24, and the negative electrode of the single battery 11 is connected to the negative electrode through the negative electrode connector 23. The board 31 is electrically connected to realize the wireless connection of the positive and negative poles of the battery module 10 on the same side, which simplifies the internal structure of the battery assembly 100; Both the battery 11 and the negative electrode connector 23 are elastically connected, which is convenient for disassembly and assembly, has a strong buffer capacity, and is more reliable for connection.

The present invention is not limited to the description in the description and the implementation, so those skilled in the art can easily realize additional advantages and modifications, so without departing from the spirit and scope of the general concept defined by the claims and equivalent scope Without limitation, the invention is not limited to the specific details, representative apparatus, and illustrative examples shown and described herein.

Claims (8)

1. a kind of battery component, it is characterised in that：Including battery modules, base assembly and the board component that confluxes；The battery modules Including a plurality of cells, the cell includes positive pole end face and side wall；

The base assembly includes fixed seat, positive pole connector, anode connector and conductive pole；The fixed seat offers collecting Hole；The positive pole connector includes clamping ring, lower clamping ring and connects the multiple of the upper clamping ring and the lower clamping ring Flexure strip, the positive pole connector are welded on the positive pole end face；The anode connector includes retaining sheet, negative pole clamping ring And negative pole weld tabs, the retaining sheet and the negative pole clamping ring be contained in the accepting hole, and the negative pole weld tabs stretches out described Accepting hole；

The board component that confluxes includes negative pole cylinder manifold, insulation board and the positive pole cylinder manifold being cascading, the fixed seat It is arranged on the negative pole cylinder manifold；Weld zone is provided with the negative pole cylinder manifold, the negative pole weld tabs is welded in the weldering Meet area；The negative pole cylinder manifold and insulation board are further opened with through hole, and the conductive pole is contained in the through hole and the conduction Post is soldered to the positive pole cylinder manifold and is electrically connected with the positive pole cylinder manifold；

The cell is contained in the accepting hole near one end of the positive pole end face；The upper clamping ring and it is described under Conductive pole is stated in clamping ring set residence, and the retaining sheet is fastened in the side wall of the cell.

2. battery component as claimed in claim 1, it is characterised in that：The fixed seat be rectangular-shape, with top surface and with The top surface and the bottom surface are run through in the relative bottom surface of the top surface, the accepting hole.

3. battery component as claimed in claim 2, it is characterised in that：The number of the quantity of the accepting hole and the cell Amount correspondence, i.e. each cell correspondence are contained in an accepting hole.

4. battery component as claimed in claim 3, it is characterised in that：The positive pole connector also includes positive pole weld tabs, described Positive pole weld tabs extends from the edge of the upper clamping ring to the direction away from the upper clamping ring central shaft, the positive pole weld tabs weldering It is connected on the positive pole end face, and the positive pole weld tabs is electrically connected with the positive pole of the cell.

5. battery component as claimed in claim 4, it is characterised in that：The quantity of the positive pole weld tabs is three and uniform intervals The side of the upper clamping ring is arranged at, the upper clamping ring, lower clamping ring, flexure strip and positive pole weld tabs are integrally formed.

6. battery component as claimed in claim 5, it is characterised in that：The negative pole weld tabs is triangle, and the weld zone is Triangle, the negative pole weld tabs are electrically connected with the weld zone by way of laser spot welding.

7. battery component as claimed in claim 1, it is characterised in that：The cell is cylindric, and the accepting hole is Circle, the upper clamping ring and lower clamping ring are circle, the diameter of the accepting hole and the upper clamping ring and lower clamping ring Diameter of the diameter corresponding to the cell.

8. battery component as claimed in claim 1, it is characterised in that：The flexure strip is to away from the upper clamping ring and lower card The direction of held in ring central shaft is bent to form arc, and flexure strip optional position cross section is any position of circular and described flexure strip Put cross section with diameter greater than the upper clamping ring and the diameter of lower clamping ring.