CN-121566031-B - Battery device, power consumption device and battery device processing method

Abstract

The application provides a battery device, an electric device and a processing method of the battery device, and belongs to the technical field of batteries. The battery device comprises a box body, a battery unit, an electric box and an integrated cover, wherein the box body defines a containing cavity with one side open, the battery unit is arranged in the containing cavity, the electric box is arranged in the box body and comprises a box body and an electric system arranged in the box body, the integrated cover is arranged on the open side of the containing cavity, and the integrated cover is electrically connected with the battery unit and is electrically connected with the electric system. In the technical scheme, the modularized design of the battery device is realized, only a plurality of modularized parts are required to be processed and produced independently, and then all the modules are assembled together, so that the number of parts in the assembly process is greatly reduced, the assembly efficiency is improved, and the purposes of reducing the manufacturing cost and the occupied area are achieved.

Inventors

• QIU YUDONG
• LI BO
• YIN CHAO

Assignees

• 宁德时代新能源科技股份有限公司

Dates

Publication Date

20260512

Application Date

20260123

Claims (20)

1. 1. A battery device, characterized by comprising: The box body is used for limiting a containing cavity with one side open; The battery monomer is arranged in the accommodating cavity; The electric box is arranged on the box body and comprises a box body and an electric system arranged in the box body; The integrated cover is arranged on the open side of the accommodating cavity, the integrated cover is electrically connected with the battery cell and is electrically connected with the electrical system, the integrated cover is arranged on one side of the battery cell in the first direction, the box body comprises a bottom plate, the bottom plate is arranged on the other side of the battery cell in the first direction, the battery cell is bonded with the bottom plate, a groove which is open towards the accommodating cavity is formed in the bottom plate, at least part of the groove is opposite to the battery cell and is used for bonding the battery cell and at least part of colloid of the bottom plate to be accommodated in the groove.
2. 2. The battery device of claim 1, wherein the case further comprises a surrounding frame disposed between the bottom plate and the integrated cover and surrounding the accommodating cavity, an adhesive injection slit is formed between adjacent battery cells and/or between the battery cells and the surrounding frame, and the groove comprises a first groove portion opposite to the adhesive injection slit, and a second groove portion opposite to the battery cells.
3. 3. The battery device according to claim 2, wherein the thickness direction of the battery cells is a second direction, a plurality of the battery cells are arranged along the second direction to form a battery row, the battery row is a plurality of the battery cells and is arranged along a third direction, the first direction, the second direction and the third direction are mutually perpendicular to each other, the enclosure frame comprises side frames extending along the second direction, the side frames are respectively arranged at two sides of the plurality of the battery rows along the third direction, and the glue injection gaps are formed between the adjacent battery rows and/or between the side frames and the battery rows.
4. 4. The battery device according to claim 1, wherein the integrated cover is disposed on one side of the battery cells in a first direction, a thickness direction of the battery cells is a second direction, a plurality of the battery cells are arranged along the second direction to form a battery row, the battery row is a plurality of the battery cells and is arranged along a third direction, the first direction, the second direction and the third direction are perpendicular to each other, the case body comprises expansion beams extending along the third direction, and the expansion beams are two and are located on two sides of each battery row in the second direction.
5. 5. The battery device according to claim 4, wherein the case includes a bottom plate and a surrounding frame, the bottom plate and the integrated cover are respectively disposed on both sides of the battery cell in the first direction, the surrounding frame is disposed between the bottom plate and the integrated cover and surrounds the accommodating cavity, the surrounding frame includes two expansion beams and two side frames, the side frames extend in the second direction, the two side frames are disposed on both sides of the accommodating cavity in the third direction, and at least one expansion beam is assembled and connected with the bottom plate and the side frames.
6. 6. The battery device of claim 5, wherein one of said expansion beams is assembled with said bottom plate and said side frames, and the other of said expansion beams is abutted against the closest one of said battery cells in each of said battery rows.
7. 7. The battery device according to claim 4, wherein the integrated cover comprises a cover body and a pressing bar, the pressing bar is arranged on the cover body, the length direction of the pressing bar extends along the second direction, and two ends of the length of the pressing bar are respectively connected with the expansion beams on two sides.
8. 8. The battery device according to claim 7, wherein a plurality of inter-row gaps are formed between two adjacent battery rows, the beads are spaced apart in the third direction, one of the beads is disposed opposite to one of the inter-row gaps, the cover body protrudes toward the battery cell at a position corresponding to the bead to form a protruding portion, and the protruding portion is bonded to the battery cell.
9. 9. The battery device according to claim 1, wherein the integrated cover is provided on a side of the battery cell in the first direction, a pole is provided on a side of the battery cell facing the integrated cover, and the integrated cover includes a bus bar covering at least a portion of the pole to be electrically connected with the pole.
10. 10. The battery device of claim 9, wherein the integrated cover further comprises a cover body and an insulating layer, the bus bars are arranged on the cover body, the cover body forms a clearance for both side surfaces of the bus bars in the first direction, and the insulating layer covers one side of the bus bars facing away from the battery cells.
11. 11. The battery device of claim 9, wherein the integrated cover includes a circuit board electrically connected to the buss bars for electrical communication with the battery cells via the buss bars, the buss bars and the circuit board being electrically connected to the electrical system, respectively.
12. 12. The battery device according to claim 11, wherein a plurality of the battery cells are arranged in a second direction to form a battery row, the battery row is a plurality of battery cells and is arranged in a third direction, the first direction, the second direction and the third direction are perpendicular to each other, the circuit board is formed in a strip shape and extends in the length direction along the second direction, the circuit boards are a plurality of circuit boards and are arranged at intervals along the third direction, one circuit board is arranged opposite to one battery row, and each circuit board is provided with the bus bars on two sides of the third direction.
13. 13. The battery device according to claim 12, wherein the electrical box is provided on one side of the case in the second direction.
14. 14. The battery device according to claim 1, wherein the integrated cover includes a vent chamber, a pressure release portion is provided on a side of the battery cell facing the integrated cover, the vent chamber covers the pressure release portion, and the integrated cover includes a communication port communicating between the vent chamber and the pressure release portion.
15. 15. The battery device according to claim 14, wherein the integrated cover is disposed on one side of the battery cells in a first direction, a plurality of the battery cells are arranged in a second direction to form a battery row, the battery row is a plurality of the battery cells and is arranged in a third direction, and the first direction, the second direction and the third direction are perpendicular to each other; the exhaust cavity is formed into a strip shape, the length direction of the exhaust cavity extends along the second direction, the exhaust cavities are multiple and are arranged at intervals along the third direction, one exhaust cavity is arranged opposite to one battery row, and the communication ports are arranged in one-to-one correspondence with the battery monomers.
16. 16. The battery device according to claim 12, wherein the integrated cover includes a vent chamber formed in a long strip shape and extending in a length direction along the second direction, the vent chamber is provided in plurality and at intervals along the third direction, one vent chamber is provided opposite to one battery row, a pressure release portion is provided on a side of the battery cell facing the integrated cover, the vent chamber covers the pressure release portion, the integrated cover includes communication ports communicated between the vent chamber and the pressure release portion, the communication ports are provided in one-to-one correspondence with the battery cells, and the circuit board is laminated on a side of the vent chamber away from the battery cell in the first direction.
17. 17. The battery device according to claim 15 or 16, wherein both ends of the exhaust chamber in the second direction are provided with films.
18. 18. The battery device of claim 1, wherein the integrated cover comprises a cover body and a functional member, the functional member is disposed on the cover body, the functional member comprises at least one of a bus bar and a circuit board, the bus bar is electrically connected with the battery cell and the electrical system, the circuit board is electrically connected with the battery cell, and the circuit board is electrically connected with the electrical system.
19. 19. The battery device of claim 18, wherein the functional member includes the bus bar and the circuit board, the circuit board is electrically connected to the bus bar to be electrically connected to the battery cell through the bus bar, and/or the cover body is an injection-molded member, the functional member being integrally formed with the cover body through an insert injection molding process.
20. 20. The battery device according to claim 1, wherein the electrical box is provided outside the case, a connector is provided on the electrical box, the connector is electrically connected to the electrical system, and the connector is used for connection to an external circuit.

Description

Battery device, power consumption device and battery device processing method Technical Field The application relates to the technical field of batteries, in particular to a battery device, an electric device and a processing method of the battery device. Background In recent years, new energy automobiles have been developed dramatically, and in the field of electric automobiles, battery devices play an important role as power sources of electric automobiles. However, since the battery device includes a large number of parts, the assembly efficiency is generally low, resulting in high manufacturing costs, which is to be improved. Disclosure of Invention The embodiment of the application provides a battery device, an electric device and a processing method of the battery device, which are beneficial to improving the production efficiency of the battery device and reducing the manufacturing cost of the battery device. In a first aspect, an embodiment of the application provides a battery device, the battery device comprises a box body, a battery monomer, an electric box and an integrated cover, wherein the box body defines a containing cavity with one open side, the battery monomer is arranged in the containing cavity, the electric box is arranged in the box body, the electric box comprises a box body and an electric system arranged in the box body, the integrated cover is arranged on the open side of the containing cavity, the integrated cover is electrically connected with the battery monomer and is electrically connected with the electric system, the integrated cover is arranged on one side of the battery monomer in a first direction, the box body comprises a bottom plate, the bottom plate is arranged on the other side of the battery monomer in the first direction, the battery monomer is bonded with the bottom plate, a groove with one open side facing the containing cavity is formed on the bottom plate, and at least part of the groove is opposite to the battery monomer and is used for bonding the battery monomer and at least part of colloid of the bottom plate to be contained in the groove. In the technical scheme, the modularized design of the battery device is realized, only a plurality of modularized parts are required to be processed and produced independently, and then all the modules are assembled together, so that the number of parts in the assembly process is greatly reduced, the assembly efficiency is improved, and the purposes of reducing the manufacturing cost and the occupied area are achieved. Through bonding the battery monomer with the bottom plate, can improve the single setting stability of battery, improve battery device's reliability. Through set up the recess on the bottom plate, do benefit to the maintenance of colloid, improve the stability of colloid for the colloid can bond bottom plate and battery monomer more reliably and effectively. In some embodiments, the case further includes a surrounding frame disposed between the bottom plate and the integrated cover and surrounding the accommodating cavity, and an adhesive injection slit is formed between adjacent battery cells and/or between the battery cells and the surrounding frame, and the groove includes a first groove portion opposite to the adhesive injection slit, and a second groove portion opposite to the battery cells. In the technical scheme, after the battery monomer is filled into the box body, the glue can be injected into the glue injection gap, and the glue enters the second groove part through the first groove part, so that the bonding requirement of the battery monomer and the bottom plate is met. In addition, the subsequent pouring of the colloid can be realized through the arrangement, namely, the colloid is not required to be injected before the battery monomer is filled into the box body, so that the position of the battery monomer placed on the box body is conveniently adjusted and moved before the colloid is injected, and the battery monomer is favorably grouped into the box body. In some embodiments, the thickness direction of the battery cells is a second direction, the plurality of battery cells are arranged along the second direction to form a battery row, the plurality of battery rows are arranged along a third direction, the first direction, the second direction and the third direction are mutually perpendicular, the surrounding frame comprises side frames extending along the second direction, the two sides of the plurality of battery rows in the third direction are respectively provided with the side frames, and the glue injection gaps are formed between the adjacent battery rows and/or between the side frames and the battery rows. In the technical scheme, the glue injection gaps are arranged on two sides of the battery monomer in the third direction, so that interference influence is not generated in design consideration of expansion space in the thickness direction of the battery monomer, and the two sid