CN-224217629-U - Battery box and energy storage device

CN224217629UCN 224217629 UCN224217629 UCN 224217629UCN-224217629-U

Abstract

The application relates to the technical field of energy storage batteries, in particular to a battery box and an energy storage device, comprising a first shell, a transition support piece, a second shell and a sealing member; the transition support piece is arranged between the first shell and the second shell and is connected with the first shell and the second shell to form a shell, the transition support piece is provided with a first matching part positioned in the shell, the second shell is provided with a second matching part positioned in the shell, and the sealing component is compressed between the first matching part and the second matching part. It can be seen that the transition support piece is installed at the butt joint position of the second shell and the first shell, the first matching part and the second matching part are introduced into the shell, and the sealing member is installed between the two matching parts, so that all structures are hidden in the shell and cannot protrude out of the shell, the residual space inside the shell can be fully utilized, the space utilization rate is improved, the capacitance of the battery box is improved, and the appearance is more attractive.

Inventors

XU ZHENG
WU SHIWEN
JI LINFENG
SONG XIAOBO
YANG QINGHENG

Assignees

江苏中兴派能电池有限公司

Dates

Publication Date: 20260508
Application Date: 20250530

Claims (12)

1. A battery box body is characterized by comprising a first shell, a transition support piece, a second shell and a sealing member, wherein the transition support piece is arranged between the first shell and the second shell and is connected with the first shell and the second shell to form a shell, the transition support piece is provided with a first matching part positioned in the shell, the second shell is provided with a second matching part positioned in the shell, and the sealing member is compressed between the first matching part and the second matching part.
2. The battery box according to claim 1, wherein the transition support piece comprises a sealing portion and a first matching portion, the sealing portion and the first matching portion are connected, two ends of the sealing portion are respectively butted with the first shell and the second shell, the first matching portion is arranged on the inner side of the sealing portion, and the sealing member is arranged on one side, close to the second shell, of the first matching portion.
3. The battery case according to claim 2, wherein the second housing includes a body, an assembly step portion, an auxiliary mounting portion, and the second fitting portion, which are sequentially connected, wherein the assembly step portion is located on a side of the closing portion near the second housing, the auxiliary mounting portion and the second fitting portion are both disposed on an inner side of the closing portion, and the second fitting portion is disposed on a side of the auxiliary mounting portion near the sealing member.
4. A battery case according to claim 3, wherein the auxiliary mounting portion is formed with a mounting blind hole, the closing portion is formed with a mounting through hole corresponding to the mounting blind hole, and first fastening members are mounted in the mounting blind hole and the mounting through hole to lock the second housing and the transition support together, and the first fitting portion, the second fitting portion, and the sealing member therebetween serve to space a mounting area of the first fastening member from an inside of the housing.
5. The battery case according to claim 1, wherein the first fitting portion is formed with a first mounting groove, and the sealing member is mounted in the first mounting groove.
6. The battery case according to claim 5, wherein the first fitting portion abuts against the second fitting portion in an arrangement direction of the first housing, the transition support, and the second housing, a depth of the first mounting groove is H, a thickness of the sealing member in a non-compressed state is H, a compression ratio of the sealing member is X, and x= (H-H)/H.
7. The battery case according to claim 6, wherein the compression ratio of the sealing member is X, and 0.25< X <0.45.
8. The battery case according to claim 1, further comprising an insulating member provided on a side of the transition support near the first housing in an arrangement direction of the first housing, the transition support, and the second housing, and adapted to abut against an end of a battery module mounted in the housing.
9. The battery case according to claim 8, wherein the transition support is formed with a second mounting groove, the insulating member is formed with a fitting boss, and the fitting boss is mounted in the second mounting groove, and/or The insulating member being of annular configuration, and/or The insulating member is connected with the transition support by means of hot melting, and/or The insulating component is made of plastic polymer.
10. The battery case according to any one of claims 1 to 9, wherein one of the first case and the second case is an upper case, the other of which is a lower case, and the upper case is provided with a handle, the lower case is formed with a groove having a depth of W and 5mm < W <7mm, and/or The transition support member has an annular configuration, and/or The sealing member being of annular configuration, and/or The transition support is connected with the first shell by welding and/or Along the arrangement direction of the first shell, the transition support piece and the second shell, the first matching part and the second matching part are abutted together, and/or The transition support piece is made of metal.
11. An energy storage device comprising a battery module and a battery housing according to any one of claims 1 to 10, wherein the battery module is disposed in the battery housing.
12. The energy storage device of claim 11, further comprising a battery management module disposed at a top or bottom of the battery module along an arrangement direction of the first housing, the transition support, and the second housing, and the first mating portion and the second mating portion are located in a vacant space of a side of the battery management module.

Description

Battery box and energy storage device Technical Field The application relates to the technical field of energy storage batteries, in particular to a battery box and an energy storage device. Background At present, the battery box mainly comprises a box body, a box cover, a battery module and the like, after the battery module and the like are installed into the box body, the battery module and the like can be sealed through the box cover, normally, the box body and the box cover are designed into an everting flanging, the upper flanging and the lower flanging are attached, a sealing ring is compressed between the upper flanging and the lower flanging, and finally, the battery box is locked through bolts, so that the basic assembly of the battery box is completed. However, because the overall outline size of the battery box is certain, the butt-joint flanging is arranged outside, the overall space is occupied, the space inside the battery module is further compressed, the battery capacity is reduced, and the box body of the battery with the space utilization rate improved when the waterproof performance is ensured is further required to be researched and developed. Disclosure of utility model The application aims to provide a battery box and an energy storage device, which solve the technical problems of the prior art that the development of the battery box capable of improving the space utilization rate while guaranteeing the waterproof performance is urgently needed to a certain extent. The application provides a battery box body which comprises a first shell, a transition support piece, a second shell and a sealing member, wherein the transition support piece is arranged between the first shell and the second shell and is connected with the first shell and the second shell to form a shell, the transition support piece is provided with a first matching part positioned in the shell, the second shell is provided with a second matching part positioned in the shell, and the sealing member is compressed between the first matching part and the second matching part. In the above technical scheme, the transition support piece further comprises a sealing portion and a first matching portion, wherein the sealing portion and the first matching portion are connected, two ends of the sealing portion are respectively in butt joint with the first shell and the second shell, the first matching portion is arranged on the inner side of the sealing portion, and the sealing member is arranged on one side, close to the second shell, of the first matching portion. In any of the above technical solutions, further, the second housing includes a body, an assembly step portion, an auxiliary mounting portion, and the second mating portion that are sequentially connected, wherein the assembly step portion is located on a side of the sealing portion, which is close to the second housing, the auxiliary mounting portion and the second mating portion are both disposed on an inner side of the sealing portion, and the second mating portion is disposed on a side of the auxiliary mounting portion, which is close to the sealing member. In any of the above technical solutions, further, the auxiliary mounting portion is formed with a mounting blind hole, the closing portion is formed with a mounting through hole corresponding to the mounting blind hole, and a first fastening member is mounted in the mounting blind hole and the mounting through hole to lock the second housing and the transition support together, and the first fitting portion, the second fitting portion, and the sealing member therebetween are used to space a mounting area of the first fastening member from an inside of the housing. In any of the above-mentioned aspects, further, the first fitting portion is formed with a first mounting groove, and the sealing member is mounted in the first mounting groove. In any of the above technical solutions, further, along the arrangement direction of the first housing, the transition support, and the second housing, the first mating portion abuts against the second mating portion, the depth of the first mounting groove is H, the thickness of the sealing member in the non-compressed state is H, the compression ratio of the sealing member is X, and x= (H-H)/H. In any of the above aspects, further, the sealing member has a compression ratio X, and 0.25< X <0.45. In any of the above technical solutions, further, the battery box further includes an insulating member, and along the arrangement direction of the first casing, the transition support, and the second casing, the insulating member is disposed on a side of the transition support, which is close to the first casing, and the insulating member is used to abut against an end of the battery module installed in the casing. In any of the above solutions, further, the transition support is formed with a second mounting groove, the insulating member is formed with a mating protrusion, and the m