CN-122000530-A - Battery pack

CN122000530ACN 122000530 ACN122000530 ACN 122000530ACN-122000530-A

Abstract

A battery pack (1) includes two battery modules (10) each having a cooling member (14) for cooling battery cells (12) and being spaced apart from each other in a left-right direction, a supply pipe (20) provided between the two battery modules (10) in a front-rear direction, two first branch pipes (30L, 30R) branching from the supply pipe (20) in the left-right direction to introduce a refrigerant into the cooling members (14) of the two battery modules (10) respectively, a discharge pipe (40) provided between the two battery modules (10) in the front-rear direction, and two second branch pipes (50L, 50R) branching from the discharge pipe (40) in the left-right direction to which the refrigerant is discharged from the cooling member (14) of each of the two battery modules (10). The supply pipe (20) and the discharge pipe (40) are arranged in the vertical direction.

Inventors

SHIMIZU TAKAHITO
Saito Falcon man
OSUMI KENJI
NAKAJIMA AYAKA

Assignees

五十铃自动车株式会社

Dates

Publication Date: 20260508
Application Date: 20250917
Priority Date: 20241107

Claims (10)

1. A battery pack, comprising: two battery modules each having a battery cell and a cooling member having a flow path therein for cooling the battery cell, and the two battery modules being spaced apart from each other in a first direction; A supply pipe provided between the two battery modules in a second direction orthogonal to the first direction, through which a refrigerant supplied to a flow path of the cooling member flows; Two first branch pipes branching from the supply pipe in the first direction and introducing a refrigerant into flow paths of cooling members of the two battery modules, respectively; a discharge pipe disposed between the two battery modules in the second direction, through which discharged refrigerant flows, and Two second branch pipes branching from the discharge pipe in the first direction, to which a refrigerant is discharged from a flow path of a cooling member of each of the two battery modules, wherein the supply pipe and the discharge pipe are arranged in a third direction orthogonal to the first direction and the second direction.
2. The battery pack according to claim 1, wherein the supply pipe and the discharge pipe are spaced apart by a predetermined distance in the third direction.
3. The battery pack according to claim 1, wherein the supply pipe and the discharge pipe are located at the same position in the first direction.
4. The battery pack of claim 1, wherein the two first branch pipes are equal in length and the two second branch pipes are equal in length.
5. The battery pack according to claim 1, wherein the third direction is a vertical direction, and along the third direction, the supply pipe is located below and the discharge pipe is located above.
6. The battery pack of claim 1, further comprising: And a support member supporting the supply pipe and the discharge pipe, the supply pipe and the discharge pipe being spaced apart by a predetermined distance in a third direction orthogonal to the first direction and the second direction, and being located at the same position in the first direction.
7. The battery pack of claim 6, wherein the support member comprises: A first clamping part having a C-shape and clamping the outer circumference of the supply pipe, and And a second clamping part which is C-shaped and clamps the outer circumference of the discharge pipe.
8. The battery pack according to claim 7, wherein a first rib is provided at a predetermined position in the circumferential direction at the outer periphery of the supply pipe; a second rib is provided at a predetermined position in the circumferential direction at the outer circumference of the discharge pipe, The first rib is positioned at the distal end opening of the first clamping portion, and The second rib is located at a distal opening of the second clip portion.
9. The battery pack according to claim 7, wherein the support member is disposed in a third direction that is a vertical direction, The second clamping part is positioned at the upper end of the supporting member, and The support member includes: A main body provided with the first clamping part and the second clamping part, and And a reinforcing portion extending upward from the main body to a position above the second clamping portion and coupled to the second clamping portion.
10. The battery pack according to claim 6, wherein the supply pipe includes a first coupling member that couples a plurality of pipe bodies forming a flow passage, The discharge pipe includes a second coupling member that couples a plurality of pipe bodies forming a flow passage, and The support member supports the first coupling member and the second coupling member.

Description

Battery pack Technical Field The present disclosure relates to a battery pack having a plurality of battery modules. Background In japanese unexamined patent application publication No. 2019-186149, a refrigerant supply pipe and a refrigerant discharge pipe are disposed laterally in parallel between the left and right battery modules. Further, a branching path connecting the refrigerant jackets of the respective battery modules to the refrigerant supply pipe and the refrigerant discharge pipe is also provided. Disclosure of Invention Problems to be solved by the invention When the refrigerant supply pipe and the refrigerant discharge pipe are disposed side by side, a difference may occur in the lengths of the branch paths leading from the refrigerant supply pipe to the left and right battery modules. At this time, the left and right battery modules cannot be uniformly cooled due to uneven flow rates of the refrigerants of the cooling jackets of the left and right battery modules. The present disclosure has been made in view of the above-described problems, and an object thereof is to achieve uniform cooling of a plurality of battery modules. Means for solving the problems The first aspect of the present disclosure provides a battery pack including two battery modules each having a battery cell and a cooling member having a flow path therein for cooling the battery cell, and the two modules are spaced apart from each other in a first direction, a supply pipe disposed between the two battery modules in a second direction orthogonal to the first direction, through which a refrigerant supplied to the flow path of the cooling member flows, two first branch pipes branching from the supply pipe in the first direction to introduce the refrigerant into the flow paths of the cooling members of the two battery modules, respectively, a discharge pipe disposed between the two battery modules in the second direction, through which the discharged refrigerant flows, and two second branch pipes branching from the discharge pipe in the first direction, into which the refrigerant from the flow path of the cooling member of each of the two battery modules is discharged, wherein the supply pipe and the discharge pipe are disposed in a third direction orthogonal to the first direction, the second direction. Further, the supply pipe and the discharge pipe may be spaced apart from each other by a predetermined distance in the third direction. Further, the supply pipe and the discharge pipe may be located at the same position in the first direction. In addition, the lengths of the two first branch pipes may be equal, and the lengths of the two second branch pipes may be equal. Further, the third direction may be a vertical direction, and in the third direction, the supply pipe may be located below and the discharge pipe may be located above. The battery pack may further include a support member supporting the supply pipe and the discharge pipe, the supply pipe and the discharge pipe being spaced apart at a predetermined distance in a third direction orthogonal to the first direction and the second direction, and being located at the same position in the first direction. Further, the support member may include a first clamping portion having a C-shape for clamping the outer circumference of the supply pipe, and a second clamping portion having a C-shape for clamping the outer circumference of the discharge pipe. Further, a first rib may be provided at a predetermined position in the circumferential direction of the outer circumference of the supply tube, a second rib may be provided at a predetermined position in the circumferential direction of the outer circumference of the discharge tube, the first rib may be located at the distal end opening of the first grip portion, and the second rib may be located at the distal end opening of the second grip portion. Further, the support member may be disposed in a third direction as a vertical direction, and the second clamping portion may be located at an upper end of the support member, and the support member may include a main body provided with the first clamping portion and the second clamping portion, and a reinforcing portion extending upward from the main body to a position above the second clamping portion and coupled with the second clamping portion. Further, the supply pipe may include a first coupling member for coupling the plurality of pipe bodies forming the flow passage, the discharge pipe may include a second coupling member for coupling the plurality of pipe bodies forming the flow passage, and the support member may support the first coupling member and the second coupling member. Effects of the invention According to the present disclosure, it is possible to uniformly cool a plurality of battery modules. Drawings Fig. 1 is a schematic diagram showing a plan layout of a battery pack 1 according to an embodiment. Fig. 2 is a view taken along line A-A of fig. 1. Fig. 3 is a