EP-4742375-A1 - CURRENT COLLECTING COMPONENT, THERMAL MANAGEMENT ASSEMBLY, BATTERY, AND ELECTRIC DEVICE

EP4742375A1EP 4742375 A1EP4742375 A1EP 4742375A1EP-4742375-A1

Abstract

A fluid collecting component (3), a thermal management assembly (30), a battery (100), and an electric apparatus are provided. The fluid collecting component (3) includes an apparatus body (31), where the apparatus body (31) is provided with a main inlet (311), a main outlet (312), a plurality of branch inlets (313), and a plurality of branch outlets (314), where the plurality of branch outlets (314) are in communication with the main outlet (312); an extension flow channel (315) is formed inside the apparatus body (31); one end of the extension flow channel (315) is in communication with the main inlet (311), and the other end thereof extends toward a side away from the main inlet (311); one of the plurality of branch inlets (313) are in communication with the main inlet (311), and the others are in communication with the extension flow channel (315); the number of the branch inlets (313) is equal to the number of the branch outlets (314), and the branch inlets (313) are in one-to-one correspondence to the branch outlets (314); and the branch inlets (313) are adjacent to the corresponding branch outlets (314).

Inventors

SONG, Feiting
TANG, YU
HUANG, Xiaoteng

Assignees

Contemporary Amperex Technology Co., Limited

Dates

Publication Date: 20260513
Application Date: 20241009

Claims (19)

A fluid collecting component, comprising: an apparatus body, wherein the apparatus body is provided with a main inlet, a main outlet, a plurality of branch inlets, and a plurality of branch outlets, wherein the plurality of branch outlets are in communication with the main outlet, an extension flow channel is formed inside the apparatus body; one end of the extension flow channel is in communication with the main inlet, and the other end thereof extends toward a side away from the main inlet; one of the plurality of branch inlets is in communication with the main inlet, and the others are in communication with the extension flow channel; the number of the branch inlets is equal to the number of the branch outlets, and the branch inlets are in one-to-one correspondence to the branch outlets; and the branch inlets are adjacent to the corresponding branch outlets.
The fluid collecting component according to claim 1, wherein the extension flow channel extends along a length direction of the apparatus body; and the plurality of branch outlets are provided on a same side of the apparatus body in the length direction.
The fluid collecting component according to claim 2, wherein at least part of the plurality of branch inlets and the branch outlets are provided on a same side of the apparatus body.
The fluid collecting component according to claim 3, wherein part of the plurality of branch inlets and the corresponding branch outlets are provided on two adjacent sides of the apparatus body.
The fluid collecting component according to any one of claims 1 to 4, wherein the apparatus body has a height direction; a first communication flow channel is formed between the branch outlet and the main outlet; and the first communication flow channel and the extension flow channel are spaced apart in the height direction.
The fluid collecting component according to claim 5, wherein a reference plane perpendicular to the height direction is made; and an orthographic projection of the extension flow channel at least partially overlaps with an orthographic projection of the first communication flow channel on the reference plane.
The fluid collecting component according to claim 5 or 6, wherein a second communication flow channel is formed between the main inlet and the one of the plurality of branch inlets that is in communication with the main inlet; and the second communication flow channel and the extension flow channel are located on two sides of the main inlet.
The fluid collecting component according to any one of claims 1 to 4, wherein the apparatus body has a width direction; a first communication flow channel is formed between the branch outlet and the main outlet; and the first communication flow channel and the extension flow channel are spaced apart along the width direction.
The fluid collecting component according to claim 8, wherein a second communication flow channel is formed between the main inlet and the one of the plurality of branch inlets that is in communication with the main inlet; and the second communication flow channel is provided on a side of the main inlet away from the main outlet and is in communication with the extension flow channel.
The fluid collecting component according to claim 8, wherein the apparatus body has a height direction; a second communication flow channel is formed between the main inlet and the one of the plurality of branch inlets that is in communication with the main inlet; the main inlet is in communication with the second communication flow channel along the height direction; a reference plane perpendicular to the height direction is made; and an orthographic projection of the main inlet at least partially overlaps with an orthographic projection of the second communication flow channel on the reference plane.
The fluid collecting component according to claim 8, wherein one of the plurality of branch inlets is in communication with the main inlet, and a second communication flow channel is formed between the one of the plurality of branch inlets and the main inlet; the second communication flow channel and the extension flow channel are located on two sides of the main inlet; a first communication hole is formed between the extension flow channel and the main inlet; a second communication hole is formed between the second communication flow channel and the main inlet; and an opening area of the first communication hole is S1, and an opening area of the second communication hole is S2, wherein 0.5 ≤ S1/S2 ≤ 1.5.
The fluid collecting component according to claim 11, wherein the apparatus body has a length direction; the extension flow channel extends along the length direction and has a length L1 in the length direction; and the second communication flow channel extends along the width direction and has a length L2 in the width direction; wherein 0.2 ≤ (S1/L1)/(S2/L2) ≤ 5.
The fluid collecting component according to claim 12, wherein 0.8 ≤ (S1/L1)/(S2/L2) ≤ 1.2.
The fluid collecting component according to any one of claims 8 to 13, wherein a first wall is formed between the main outlet and the extension flow channel; and a size of the first wall in the width direction is 0.5 mm to 2 mm.
The fluid collecting component according to any one of claims 1 to 14, wherein two branch inlets and two branch outlets are provided; and the two branch outlets comprise a first branch outlet and a second branch outlet that are provided along the length direction of the apparatus body; a first flow channel is formed between the first branch outlet and the main outlet; a second flow channel is formed between the second branch outlet and the main outlet; a second wall is formed between the first flow channel and the second flow channel; and in the length direction of the apparatus body, a thickness of the second wall is 0.5 mm to 2 mm.
The fluid collecting component according to any one of claims 1 to 15, wherein the fluid collecting component further comprises a first connecting pipe and a second connecting pipe; the first connecting pipe is in communication with the main inlet; and the second connecting pipe is in communication with the main outlet.
A thermal management assembly, comprising: at least two thermal management components, wherein the thermal management component has a refrigerant inlet and a refrigerant outlet that are in communication with an internal flow path; and the fluid collecting component according to any one of claims 1 to 16, wherein each branch inlet and the corresponding branch outlet form a set of matching structures; the number of the matching structures is equal to the number of the thermal management components, and the matching structures are in one-to-one correspondence to the thermal management components; in each set of matching structures, the branch inlet is in communication with the refrigerant inlet, and the branch outlet is in communication with the refrigerant outlet.
A battery, comprising the thermal management assembly according to claim 17.
An electric apparatus, comprising the thermal management assembly according to claim 17 or the battery according to claim 18.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is based on Chinese Patent Application No. 202311377386.3, filed on October 23, 2023, and claims priority to the Chinese Patent Application, which is incorporated herein by reference in its entirety. TECHNICAL FIELD This application relates to the field of battery technology, and in particular, to a fluid collecting component, a thermal management assembly, a battery, and an electric apparatus. BACKGROUND In recent years, new energy vehicles have undergone rapid development. In the field of electric vehicles, traction batteries, as traction sources of electric vehicles, play an irreplaceable and important role. A battery includes a box and a plurality of battery cells accommodated in the box. As a core component of new energy vehicles, the battery has high requirements in terms of safety and service life. Battery cells in the battery generate a large amount of heat during continuous charging and discharging, resulting in a sharp rise in the internal temperature of the battery, thus seriously affecting the reliability of the battery. SUMMARY Embodiments of this application provide a fluid collecting component, a thermal management assembly, a battery, and an electric apparatus, which can effectively improve the reliability of the battery. According to a first aspect, an embodiment of this application provides a fluid collecting component including an apparatus body, where the apparatus body is provided with a main inlet, a main outlet, a plurality of branch inlets, and a plurality of branch outlets; the plurality of branch outlets are in communication with the main outlet; an extension flow channel is formed inside the apparatus body; one end of the extension flow channel is in communication with the main inlet, and the other end thereof extends toward a side away from the main inlet; one of the plurality of branch inlets are in communication with the main inlet, and the others are in communication with the extension flow channel; the number of the branch inlets is equal to the number of the branch outlets, and the branch inlets are in one-to-one correspondence to the branch outlets; and the branch inlets are adjacent to the corresponding branch outlets. According to the fluid collecting component of this embodiment of this application, the apparatus body is provided with the plurality of branch inlets and the plurality of branch outlets, so that the fluid collecting component can be in communication with a plurality of thermal management components, and the temperature inside the battery can be controlled through the plurality of thermal management components. This can reduce the probability of a large temperature difference occurring in the battery, improve the temperature uniformity of the battery, reduce the probability of a sharp rise in the temperature of the battery, and improve the reliability of the battery. Moreover, the plurality of branch inlets can be in communication with the main inlet through the extension flow channel, and the branch inlets are adjacent to the corresponding branch outlets, so that the plurality of branch inlets can be arranged in a dispersed manner. This is conducive to reducing the probability of installation interference among the plurality of thermal management components, reducing the occurrence of the thermal management components needing to be bent for avoidance, maintaining the overall flatness of the thermal management components, and reducing the large space occupied by the thermal management components. In some embodiments of this application, the extension flow channel extends along a length direction of the apparatus body; and the plurality of branch outlets are provided on a same side of the apparatus body in the length direction. In the above technical solution, the extension flow channel extends along the length direction of the apparatus body, so that the extension flow channel is a linear flow channel. This is conducive to reducing the flow resistance in the extension flow channel and reducing the flow velocity loss of a refrigerant. The plurality of branch outlets are provided on a same side of the apparatus body, which is conducive to providing the plurality of thermal management components on the same side of the apparatus body, thereby allowing the position layout of the plurality of thermal management components to be relatively compact, reducing the size of the thermal management assembly in a second direction, and further reducing the space occupied by the thermal management assembly. In some embodiments of this application, at least part of the plurality of branch inlets and the branch outlets are provided on a same side of the apparatus body. In the above technical solution, in the plurality of thermal management components, for a thermal management component connected to the branch inlet and the branch outlet on the same side, a distance between two ends of a pipeline of the thermal managemen