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CN-122026029-A - Battery and electricity utilization device

CN122026029ACN 122026029 ACN122026029 ACN 122026029ACN-122026029-A

Abstract

The application relates to a battery and an electric device. The battery comprises battery monomers, an electric connection assembly and an electric connection assembly, wherein the battery monomers comprise a pole, the pole comprises a pole main body and a blocking part, the pole main body is provided with a groove, the blocking part is arranged on the pole main body and is arranged at intervals with the groove bottom wall of the groove, the electric connection assembly is used for electrically connecting at least two battery monomers and comprises an electric connection piece and an elastic piece, the electric connection piece comprises a confluence main body and a splicing bulge, the splicing bulge and the elastic piece are arranged on one side, facing the pole, of the confluence main body, the elastic piece is connected with the splicing bulge, the elastic piece comprises an elastic part, the elastic part is arranged on the side periphery of the splicing bulge, the splicing bulge and the elastic part are at least partially inserted into the groove, and the elastic part is at least partially limited between the blocking part and the groove bottom wall of the groove. The battery and the power utilization device provided by the application can improve the reliability of the electric connection between the electric connecting piece and the pole.

Inventors

  • KONG XIAO
  • CHEN SHENGLI
  • WANG RUI
  • YU HONGJIANG

Assignees

  • 江苏正力新能电池技术股份有限公司

Dates

Publication Date
20260512
Application Date
20260122

Claims (10)

  1. 1. A battery, the battery comprising: The battery unit (10) comprises a pole (11), wherein the pole (11) comprises a pole main body (111) and a blocking part (112), the pole main body (111) is provided with a groove (1111), the blocking part (112) is arranged on the pole main body (111) and is arranged at intervals with the groove bottom wall of the groove (1111), and The electric connection assembly (20) is used for electrically connecting at least two battery cells (10), the electric connection assembly (20) comprises an electric connection piece (21) and an elastic piece (22), the electric connection piece (21) comprises a bus body (211) and a plug-in protrusion (212), the plug-in protrusion (212) and the elastic piece (22) are arranged on one side, facing the pole (11), of the bus body (211), the elastic piece (22) is connected with the plug-in protrusion (212), the elastic piece (22) comprises an elastic part (221), and the elastic part (221) is located on the side periphery of the plug-in protrusion (212); The insertion protrusion (212) and the elastic portion (221) are at least partially inserted into the groove (1111), and the elastic portion (221) is at least partially limited between the blocking portion (112) and the groove bottom wall of the groove (1111).
  2. 2. The battery according to claim 1, wherein the blocking portion (112) has an inclined surface (1121) provided toward the insertion projection (212), and a distance between the inclined surface (1121) and the insertion projection (212) is gradually reduced in an insertion direction of the insertion projection (212).
  3. 3. The battery according to claim 1, wherein the elastic portion (221) is provided obliquely with respect to the insertion projection (212), and a distance between the elastic portion (221) and the insertion projection (212) is gradually reduced in an insertion direction of the insertion projection (212).
  4. 4. A battery according to claim 3, characterized in that the plug-in projection (212) has a trailing face (2123) remote from the busbar body (211); the elastic part (221) comprises a first part (2211) and a second part (2212), the first part (2211) and the second part (2212) are sequentially arranged and connected along the inclined direction of the elastic part (221), the second part (2212) is opposite to the first part (2211) and far away from the tail end face (2123) of the plug-in protrusion (212), the first part (2211) is limited between the blocking part (112) and the bottom wall of the groove (1111), and the second part (2212) extends out of the groove (1111).
  5. 5. The battery according to claim 4, wherein the bus body (211) is provided with a first notch (2111), the first notch (2111) extends to a side circumferential surface of the bus body (211), and the second branch (2212) penetrates through the first notch (2111).
  6. 6. The battery according to any one of claims 1 to 5, wherein the elastic member (22) further includes a connecting portion (222); The connecting part (222) is provided with a through hole (2221), the through hole (2221) comprises a first sub-hole (22211) and a second sub-hole (22212) which are communicated with each other, the cross-sectional area of the second sub-hole (22212) is larger than that of the first sub-hole (22211), the plug-in protrusion (212) comprises a plug-in main body (2121) and a limiting part (2122), the limiting part (2122) and the connecting part (222) are arranged on one side, far away from the bus main body (211), of the plug-in main body (2121), the limiting part (2122) comprises a first sub-part (21221) and a second sub-part (21222), the first sub-part (21221) is connected between the plug-in main body (2121) and the second sub-part (21222), the cross-sectional area of the second sub-part (21222) is larger than that of the first sub-part (21221), and the first sub-part (21221) is positioned in the first sub-hole (21211) and the second sub-part (21212) is positioned in the second sub-hole (21212). Or the connecting part (222) is provided with a through hole (2221), the plug-in protrusion (212) comprises a plug-in main body (2121) and a limiting part (2122), the limiting part (2122) and the connecting part (222) are arranged on one side, far away from the bus main body (211), of the plug-in main body (2121), and the limiting part (2122) penetrates through the through hole (2221) and is welded with the connecting part (222); Or the connecting part (222) is overlapped on one side of the plugging protrusion (212) far away from the bus body (211) and is glued with the plugging protrusion (212).
  7. 7. The battery according to any one of claims 1 to 5, further comprising an elastic contact finger (30), wherein the elastic contact finger (30) is at least partially disposed in the groove (1111), and the elastic contact finger (30) comprises an elastic body (31), the elastic body (31) is in a circular arc shape, the elastic body (31) is disposed around the circumference of the plugging protrusion (212) and is electrically connected between the plugging protrusion (212) and the groove wall of the groove (1111), and two opposite ends of the elastic body (31) define a second notch (33) for avoiding the elastic portion (221).
  8. 8. The battery of claim 7, wherein the recess (1111) comprises a first sub-slot (11111) and a second sub-slot (11112) in communication; the blocking part (112) and the elastic part (221) are at least partially positioned in the second sub-groove (11112), the blocking part (112) and the groove bottom wall of the second sub-groove (11112) are arranged at intervals, and the elastic part (221) is at least partially limited between the blocking part (112) and the groove bottom wall of the second sub-groove (11112); The elastic contact finger (30) further comprises two positioning parts (32), the two positioning parts (32) are arranged at two opposite ends of the elastic main body (31), the two positioning parts are folded into the second sub-groove (11112) relative to the elastic main body (31), and the two positioning parts (32) are propped against two opposite groove side walls of the second sub-groove (11112).
  9. 9. The battery according to claim 8, wherein the blocking portions (112) and the positioning portions (32) are two, the positioning portions (32) are in one-to-one correspondence with the blocking portions (112), and the positioning portions (32) are abutted against the corresponding blocking portions (112) along the self-folding direction.
  10. 10. An electrical device comprising a battery as claimed in any one of claims 1 to 9.

Description

Battery and electricity utilization device Technical Field The application relates to the technical field of batteries, in particular to a battery and an electric device. Background In recent years, the new energy industry is getting more and more attention, and as an important component part of the new energy industry, batteries have a large share in the market. The battery is formed by a plurality of battery cells in a serial connection, parallel connection or series-parallel connection mode. In order to facilitate replacement of battery monomers, a battery connected by using elastic contact fingers is induced at present, and an electric connecting piece is electrically connected with a pole through the elastic contact fingers. However, the connection mode is not well applied to complex working conditions, such as vibration working conditions of vehicle running, the electric connection piece and the elastic contact finger are easy to be separated, so that the electric connection of the electric connection piece and the pole is invalid, and the safety is reduced. Disclosure of Invention In view of the above, it is necessary to provide a battery and an electric device that can improve the reliability of the electrical connection between the electrical connector and the post. In a first aspect, the present application provides a battery comprising: The battery unit comprises a pole, wherein the pole comprises a pole main body and a blocking part, the pole main body is provided with a groove, the blocking part is arranged on the pole main body and is arranged at intervals with the bottom wall of the groove, and The electric connection assembly is used for electrically connecting at least two battery monomers and comprises an electric connection piece and an elastic piece, the electric connection piece comprises a bus main body and a plug-in protrusion, the plug-in protrusion and the elastic piece are both arranged on one side of the bus main body, which faces the pole, and the elastic piece is connected with the plug-in protrusion, and the elastic piece comprises an elastic part, and the elastic part is positioned on the side periphery of the plug-in protrusion; the insertion protrusion and the elastic part are at least partially inserted into the groove, and the elastic part is at least partially limited between the blocking part and the bottom wall of the groove. In some embodiments, the blocking portion has an inclined surface disposed toward the insertion projection, and a distance between the inclined surface and the insertion projection gradually decreases in an insertion direction of the insertion projection. In some embodiments, the elastic portion is disposed obliquely with respect to the plugging protrusion, and a distance between the elastic portion and the plugging protrusion is gradually reduced in an insertion direction of the plugging protrusion. In some embodiments, the mating protrusion has a trailing end face distal from the bus body; the elastic part comprises a first part and a second part, the first part and the second part are sequentially arranged and connected along the inclined direction of the elastic part, the second part is opposite to the first part and far away from the tail end face of the plug-in protrusion, the first part is limited between the blocking part and the bottom wall of the groove, and the second part extends out of the groove. In some embodiments, the main body is provided with a first notch, the first notch extends to the side circumferential surface of the main body, and the second subsection penetrates through the first notch. In some embodiments, the elastic member further comprises a connecting portion; The connecting part is provided with a through hole, the through hole comprises a first sub-hole and a second sub-hole which are communicated with each other, the cross section area of the second sub-hole is larger than that of the first sub-hole, the plug-in protrusion comprises a plug-in main body and a limiting part, the limiting part and the connecting part are arranged on one side, far away from the confluence main body, of the plug-in main body, the limiting part comprises a first sub-part and a second sub-part, the first sub-part is connected between the plug-in main body and the second sub-part, the cross section area of the second sub-part is larger than that of the first sub-part, the first sub-part is positioned in the first sub-hole, and the second sub-part is positioned in the second sub-hole; Or the connecting part is provided with a through hole, the inserting protrusion comprises an inserting main body and a limiting part, the limiting part and the connecting part are arranged on one side of the inserting main body far away from the converging main body, and the limiting part penetrates through the through hole and is welded with the connecting part; or the connecting part is overlapped on one side of the splicing protrusion far away from the bu