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CN-224204295-U - Electric connection structure, battery module and battery pack

CN224204295UCN 224204295 UCN224204295 UCN 224204295UCN-224204295-U

Abstract

The utility model provides an electric connection structure, a battery module and a battery pack. The electric connection structure comprises a bracket, a bus bar and a limiting structure, wherein the bracket comprises a first slot, a first opening is formed in the top of the first slot, a first channel is arranged on the first side wall of the first slot and is configured to allow a lug of an electric core to pass out, a second channel extending in the vertical direction is arranged on the bus bar and is configured to allow the lug to pass out, one end of the second channel penetrates through the bottom of the bus bar and forms a first lug penetrating opening, the bus bar can be inserted into the first slot from the first opening, the bus bar is arranged opposite to the first side wall after the bus bar is inserted into the first slot, the first channel corresponds to the second channel, and the limiting structure is arranged on one side of the first slot and can limit the bus bar positioned in the first slot in a stop mode in the first direction. The technical scheme of the utility model can solve the problem of lower production efficiency of the state battery module.

Inventors

  • LI MINGHUI

Assignees

  • 上海国轩新能源有限公司

Dates

Publication Date
20260505
Application Date
20250514

Claims (15)

  1. 1. An electrical connection structure, comprising: The bracket (10) comprises a first slot (11), wherein a first opening (111) is formed in the top of the first slot (11), a first channel (113) is formed in a first side wall (112) of the first slot (11), the first channel (113) penetrates through the first side wall (112) along a first direction, and the first channel (113) is configured to allow a tab (20) to penetrate out; A bus bar (30), wherein a second channel (31) extending along the vertical direction is arranged on the bus bar (30), the second channel (31) is configured to allow the tab (20) to pass out, one end of the second channel (31) penetrates through the bottom of the bus bar (30) and forms a first tab penetrating opening (32), the bus bar (30) can be inserted into the first slot (11) from the first opening (111), after the bus bar (30) is inserted into the first slot (11), the bus bar (30) is arranged opposite to the first side wall (112), the first channel (113) is arranged corresponding to the second channel (31), and And the limiting structure (40) is arranged on one side of the first slot (11) and can limit the bus bar (30) positioned in the first slot (11) in a stop mode in the first direction.
  2. 2. The electrical connection structure according to claim 1, wherein the plurality of first slots (11) are provided, the plurality of first slots (11) are sequentially arranged along the second direction, at least one bus bar (30) is disposed in each first slot (11), and the bus bars (30) disposed in different first slots (11) are insulated from each other.
  3. 3. The electrical connection structure according to claim 1, wherein the width of the opening of the first tab through hole (32) gradually increases in a direction away from the top of the second channel (31).
  4. 4. An electrical connection according to any one of claims 1 to 3, wherein the limiting structure (40) comprises a first limiting member (41) extending in a second direction, the first limiting member (41) being connected to the top of the bracket (10), the first limiting member (41) being capable of limiting the top of the busbar (30) in the first direction after the busbar (30) is inserted into the first slot (11).
  5. 5. The electrical connection structure according to claim 4, wherein the limiting structure (40) further comprises a second limiting member (42) extending along the second direction, the first limiting member (41) and the second limiting member (42) are disposed on the same side of the first slot (11) at intervals along the vertical direction, the second limiting member (42) is located below the first limiting member (41), and the second limiting member (42) is capable of stopping and limiting the bottom of the busbar (30) in the direction after the busbar (30) is inserted into the first slot (11).
  6. 6. An electrical connection according to any one of claims 1 to 3, wherein the holder (10) further comprises a second slot (12), the electrical connection further comprises an output structure (50), the second slot (12) being located at a head end or a tail end of the holder (10), the top of the second slot (12) having a second opening (121), a third channel (123) being provided in a second side wall (122) of the second slot (12), the third channel (123) extending through the second side wall (122) in the first direction, a fourth channel (51) being provided in the output structure (50), one end of the fourth channel (51) extending through a bottom of the output structure (50) and forming a second tab-passing opening (52), the third channel (123) and the fourth channel (51) each being configured to allow the tab (20) to pass out, a portion of the output structure (50) being insertable into the second side wall (122) from the second opening (121), the output structure (50) being provided opposite the second channel (51) and the second slot (51) being provided opposite the second channel (51), the limit structure (40) is capable of stopping and limiting the output structure (50) located in the second slot (12) in a direction perpendicular to the first direction.
  7. 7. The electrical connection structure according to claim 6, wherein, along a second direction, a side of the second slot (12) away from the first slot (11) is provided with a avoidance gap (124), the avoidance gap (124) is communicated with the second opening (121), the output structure (50) comprises an insertion section (53) and a connection section (54) which are connected, the fourth channel (51) is provided at the insertion section (53), the insertion section (53) can be inserted into the second slot (12) from the second opening (121), the connection section (54) is located outside the second slot (12), the length of the avoidance gap (124) is greater than or equal to the moving path of the connection section (54), the connection section (54) is used for electrical connection with an external device, and/or the width of the opening of the second electrode penetrating opening (52) is gradually increased along the direction away from the top of the fourth channel (51).
  8. 8. The electrical connection structure according to claim 7, wherein the connection section (54) includes a first section (541) and a second section (542) disposed at an angle, the first section (541) is connected to the insertion section (53), an insulation structure (544) is provided on the first section (541), one end of the second section (542) is connected to the first section (541), and the other end of the second section (542) is provided with a connection hole (543).
  9. 9. The electrical connection structure according to claim 6, wherein the limiting structure (40) comprises a third limiting member (43) extending along a second direction, the third limiting member (43) being connected to the top of the bracket (10), the third limiting member (43) being capable of stopping and limiting the top of the output structure (50) in the first direction after the output structure (50) is inserted into the second slot (12).
  10. 10. The electrical connection structure according to claim 9, wherein the limiting structure (40) further comprises a fourth limiting member (44) extending along the second direction, the fourth limiting member (44) and the third limiting member (43) are arranged on the same side of the second slot (12) at intervals along the vertical direction, the fourth limiting member (44) is located below the third limiting member (43), and the fourth limiting member (44) can limit the bottom of the output structure (50) in the first direction after the output structure (50) is inserted into the second slot (12).
  11. 11. An electrical connection according to claim 2 or 3, wherein the bracket (10) comprises a body (101) and a flange and a plurality of spacers (103) arranged on the body (101), the flange being arranged at the bottom of the body (101) and protruding sideways towards the body (101), the plurality of spacers (103) being arranged at intervals along a second direction, one of the first slots (11) being formed between two adjacent spacers (103).
  12. 12. The electrical connection according to claim 11, wherein one of said bus bars (30) is provided in each of said first slots (11), said first slots (11) being configured to fit into said bus bars (30) inserted therein.
  13. 13. An electrical connection according to any one of claims 1 to 3, characterized in that the side of the bracket (10) facing away from the first slot (11) is provided with at least two connection posts (13).
  14. 14. A battery module, comprising: At least two electrical connection structures as claimed in any one of claims 1 to 13; the battery cell unit comprises a plurality of battery cells (60) which are distributed along a second direction, the battery cell unit is provided with a first side and a second side which are oppositely arranged along the first direction, and at least one electric connection structure is arranged on each of the first side and the second side.
  15. 15. A battery pack, comprising: The electrical connection structure according to any one of claims 1 to 13 or the battery module according to claim 14.

Description

Electric connection structure, battery module and battery pack Technical Field The utility model relates to the technical field of batteries, in particular to an electric connection structure, a battery module and a battery pack. Background With the increasing global demand for clean energy and sustainable traffic, electric vehicles and renewable energy technologies are rapidly developing, becoming key forces for the conversion of push energy. In this context, the rise of solid state battery technology is considered an important breakthrough in the battery industry. Compared with the traditional liquid electrolyte battery, the solid electrolyte is adopted in the solid-state battery, so that the risk of leakage and combustion of the electrolyte is greatly reduced, the safety of a battery system is remarkably improved, the energy density is higher and can reach 500Wh/kg, and the energy density of the far-ultra-liquid battery is 200-300Wh/kg, which means that the solid-state battery can provide longer endurance mileage and faster charging speed under the same weight. In addition, the temperature adaptability of the solid electrolyte is better than that of the liquid electrolyte, and the solid electrolyte can keep stable performance in a wider temperature range, which is important for the use of the electric automobile in various environments. The advantages of the solid-state battery in material selection are also reflected in the environmental friendliness, and the solid-state battery does not contain or only contains a small amount of harmful metals, is more in line with the global trend of low-carbon development, and shows great potential of the solid-state battery in future battery technology and application fields. However, industrial production of solid-state batteries faces challenges in the manufacturing process. Solid-state batteries are usually packaged by soft packages of aluminum plastic films, and the packaging mode is light and low in cost, but also brings complexity to tab connection. In the prior art, the electrode lugs are mostly sheet-shaped, soft in material, complicated in welding process with the bus bar and low in efficiency. The traditional method requires that the bus bar moves along the direction perpendicular to the cross section of the tab to enable the tab to pass through the bus bar, then the bus bar is fixed on the plastic bracket through bolts, then the tab is required to be bent to ensure close fitting with the bus bar, and finally welding of the tab and the bus bar is completed under the action of a welding tool. Therefore, in the process of moving the bus bar to enable the tab to pass through the bus bar smoothly, attention is required to be paid to the positional relationship between the tab and the inner wall of the through hole on the bus bar for the tab to pass through, and the bus bar and the plastic bracket are required to be fixedly connected after the tab is smoothly arranged in a penetrating manner, so that a large number of working hours are consumed in the series of steps, the production efficiency of the solid-state battery module is low, and the mass production process of the solid-state battery is severely restricted. Disclosure of utility model The utility model mainly aims to provide an electric connection structure, a battery module and a battery pack, which can solve the problem of lower production efficiency of a solid-state battery module. In order to achieve the above object, according to an aspect of the present utility model, there is provided an electrical connection structure including a bracket including a first slot having a first opening at a top thereof, a first passage provided on a first sidewall of the first slot, the first passage penetrating the first sidewall in a first direction, the first passage being configured to allow a tab to pass out, a bus bar provided with a second passage extending in a vertical direction, the second passage being configured to allow the tab to pass out, one end of the second passage penetrating a bottom of the bus bar and forming a first tab-passing opening, the bus bar being insertable into the first slot from the first opening, the bus bar being disposed opposite to the first sidewall after the bus bar is inserted into the first slot, the first passage being disposed in correspondence with the second passage, and a stopper structure provided on one side of the first slot and capable of stopping and stopping the bus bar located in the first slot in the first direction. Further, the first slots are multiple, the first slots are sequentially distributed along the second direction, at least one busbar is arranged in each first slot, and the busbars in different first slots are mutually insulated. Further, the width of the opening of the first tab penetrating opening gradually increases along a direction away from the top of the second channel. Further, the limit structure comprises a first limit part extending along