CN220420798U

CN220420798U - Battery pack protective cylinder

Info

Publication number: CN220420798U
Application number: CN202320586107.3U
Authority: CN
Inventors: 杨鑫
Original assignee: China Australia Energy Storage Power Technology Xi'an Co ltd
Current assignee: China Australia Energy Storage Power Technology Xi'an Co ltd
Priority date: 2023-03-23
Filing date: 2023-03-23
Publication date: 2024-01-30
Anticipated expiration: 2033-03-23

Abstract

The utility model discloses a battery pack casing, which comprises an outer cylinder body and an inner frame, wherein the two ends of the outer cylinder body are open, the inner frame is arranged in the outer cylinder body in a plugging manner, and the outer cylinder body and the inner frame form tight fit in the circumferential direction. The battery pack casing adopts an inner-outer double-layer structure, so that the installation stability of the battery pack main body part in the casing can be ensured, and the probability of danger caused by shaking of the battery pack under the conditions of carrying or external force is reduced.

Description

Battery pack protective cylinder

Technical Field

The utility model relates to the technical field of battery equipment, in particular to a battery pack casing.

Background

Along with the development of society and the increasing deterioration of environment, energy storage equipment is widely applied in life of people, and an energy storage battery is a battery pack formed by connecting a plurality of single battery cells in series or in parallel, and in the use process, a shell or a frame is needed to accommodate the battery pack and corresponding electric appliance components.

If the battery pack body is not restrained inside the housing, vibration during transportation or use may cause the battery pack body to shake, which in turn may cause danger to occur.

The battery pack main body of some existing battery packs solves the problem by arranging a special fixing mechanism in the shell to integrally fix the battery pack main body in the shell, but the special fixing mechanism makes the whole structure relatively complex, and the battery pack is also complex in assembly.

Disclosure of Invention

The utility model provides a battery pack casing, which aims to solve the problems that the prior battery pack main body is complex in fixing structure and complex in assembly.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

a battery pack casing comprising an outer barrel and an inner frame; the two ends of the outer cylinder body are opened, the inner frame is arranged in the outer cylinder body in an inserting mode, and the outer cylinder body and the inner frame form tight fit in the circumferential direction. The scheme is only through the tight fit between the outer cylinder body and the inner frame, so that the battery pack main body part is restrained, the shaking of the battery pack main body in the outer shell body is avoided, and the safety is improved. Meanwhile, the fixing mode does not need an additional fixing mechanism, is easy to assemble and has strong practicability.

Furthermore, the outer wall of the inner frame is provided with at least one grafting prism or grafting groove extending along the grafting direction, and the inner wall of the corresponding outer cylinder body is provided with the grafting groove or grafting prism matched with the grafting prism or grafting groove.

Further, a partition plate is arranged in the inner frame, and divides the inner frame into an electric appliance accommodating cavity for accommodating electric appliance elements and a battery accommodating cavity for accommodating battery packs.

Further, the inner frame is of a split structure and comprises a top plate and a U-shaped underframe; the top plate is fixed at the opening end of the U-shaped underframe; at least one grafting prism or grafting groove is arranged on the outer walls of the two side plates of the U-shaped underframe.

Further, a plurality of first through holes are formed in the side plates on two sides of the U-shaped underframe, and a plurality of second through holes and a plurality of third through holes are formed in the top plate.

Further, the roof is the U font, and opening direction and U-shaped chassis opening direction unanimity for place the transmission and gather the PCB board of signal.

Further, the inner frame is made of insulating plastic, and the outer cylinder is made of aluminum alloy.

Further, threaded holes for connecting the battery pack casing with the external end cover are formed in two ends of the plug prism.

Additional features and advantages of the utility model will be set forth in the detailed description which follows.

The utility model has the beneficial effects that:

the battery pack casing comprises an outer cylinder body and an inner frame which is fixedly inserted with the outer cylinder body, wherein the outer cylinder body and the inner frame form tight fit. The battery pack casing adopts an inner-outer double-layer structure, and the constraint force is applied to the inner frame through the outer barrel, so that the installation stability of the battery pack main body part in the inner frame can be ensured, and the probability of danger caused by shaking of the battery pack main body under the condition of carrying or external force is greatly reduced.

The battery pack casing is fixed in an inserting mode, so that the outer cylinder body and the inner frame are tightly matched, the assembly is simple, and the later maintenance is not needed. Be equipped with the baffle in the U-shaped chassis, separate the inner frame into electrical apparatus and hold chamber and battery and hold the chamber, inside more reasonable compact of arranging is provided with the through-hole on the both sides board of U-shaped chassis, can be used to group battery heat dissipation and line connection, convenient to use is nimble.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an exploded view of a battery pack cage;

FIG. 2 is a schematic perspective view of an outer barrel of a battery pack casing;

FIG. 3 is a perspective view of the U-shaped chassis of the battery pack cage;

FIG. 4 is a schematic diagram of the top cover structure of the battery pack casing;

fig. 5 is a schematic perspective view of an inner frame of a battery pack casing;

fig. 6 is an exploded view of the battery module.

The reference numerals are as follows:

the battery pack comprises a 1-outer cylinder body, 11-threaded holes, 2-inner frames, 3-inserting grooves, 4-inserting ribs, 5-partition plates, 6-battery accommodating cavities, 7-electric appliance accommodating cavities, 8-end covers, 21-U-shaped underframe, 22-top plates, 210-first through holes, 211-second through holes, 212-third through holes, 213-bottom plates and 214-side plates.

Detailed Description

The present utility model is described in further detail below with reference to the drawings to enable those skilled in the art to practice the utility model by referring to the description.

Referring to fig. 1, the present embodiment provides a battery pack casing including an outer can 1 and an inner can 2.

As shown in fig. 2, the outer cylinder 1 has a rectangular cylindrical structure with two open ends, one or more insertion ribs 4 are provided on the inner wall of the outer cylinder 1 along the circumferential direction of the cylinder, and the insertion ribs 4 extend to the two open ends along the axial direction of the outer cylinder 1. Screw holes 11 are arranged at two ends of the plugging edges 4 of the outer cylinder body 1 and are used for being connected with an outer end cover.

As shown in fig. 4, the structure of the inner frame 2 is shown, the inner frame 2 is also a cuboid tubular structure with two open ends, the outer wall of the inner frame 2 is provided with a plugging groove 3, the plugging groove 3 and the plugging edge 4 are mutually matched, the inner frame 2 is plugged and installed through the plugging groove 3 and the plugging edge 4 on the outer cylinder 1, and is fixed in the inner part of the outer cylinder 1, and the outer cylinder 1 and the inner frame 2 form tight fit in the circumferential direction of the battery pack casing, and the inner frame 2 is used for accommodating a battery pack and an electrical appliance assembly.

The inner frame 2 may be of a unitary or split type construction. When the inner frame is of an integrated structure, the battery pack main body part and the electric appliance component can be placed into the battery accommodating cavity and the electric appliance accommodating cavity from the two ends of the inner frame respectively, and then the outer cylinder body and the inner frame are inserted, installed and fixed. However, the integral inner frame structure is required to be put in from two ports of the inner frame when the battery pack main body part and the electric appliance assembly are placed, and has certain limitation in operation.

In order to more conveniently place the battery pack main body and the electric appliance assembly, the present embodiment employs a split type inner frame 2, as shown in fig. 3 to 5, the inner frame 2 is composed of a U-shaped chassis 21 of fig. 3 and a top plate 22 of fig. 4, the U-shaped chassis 21 is composed of a bottom plate 213 and a pair of opposite side plates 214, the side plates 214 are respectively connected to both sides of the bottom plate 213, in some embodiments, the top plate 22 is a rectangular plate, and the upper edges of the side plates 214 are connected, and the U-shaped chassis 21 and the top plate 22 enclose the inner frame 2. The outer wall of the side plate 214 is provided with one or more inserting grooves 3 which are matched with inserting ribs 4 on the inner wall of the outer cylinder 1. The U-shaped chassis 21 is provided therein with a partition plate 5, and the partition plate 5 is vertically connected with the side plates 214 and the bottom plate 213 to divide the inner frame 2 into a battery accommodating chamber 6 for accommodating a main body portion of the battery pack and an electric appliance accommodating chamber 7 for accommodating an electric appliance component.

In this embodiment, the inner frame 2 is made of an insulating plastic material, the outer cylinder 1 is made of an aluminum alloy material, the plastic inner frame 2 is integrally insulated from the battery pack and the electrical components accommodated therein, and a certain deformation space can be generated by plastic, when the outer cylinder 1 and the inner frame 2 are fixedly spliced to form tight fit, the inner frame 2 can generate a restraining force on the battery pack main body placed therein, so that the battery pack main body is fixedly and firmly fixed, shaking in the transportation process is prevented, and dangerous occurrence is avoided.

The top plate and the U-shaped underframe 21 can be detachably connected by screw connection or clamping connection or combination of the two.

In some embodiments, the two side plates 214 of the U-shaped chassis 21 are provided with a plurality of first through holes 210, so that the side plates 214 are hollow, which is beneficial to heat dissipation of the main body of the battery pack in the inner frame 2, and simultaneously, the weight of the inner frame 2 can be reduced.

In some embodiments, two vertical protrusions are disposed on the upper end surface of the top plate 22 along the length direction, so that the cross section of the top plate 22 is U-shaped, and a space is formed in which a PCB board for transmitting and collecting signals can be placed, and the PCB board is used for transmitting the signals to the electrical components.

As shown in fig. 4, the top plate 22 is provided with a plurality of second through holes 211 and a plurality of third through holes 212. The second through hole 211 is provided for conveniently leading out the poles of each unit cell in the main body of the battery pack, and the third through hole 212 is provided for leaving a explosion venting passage for the explosion venting hole of each unit cell.

Referring to fig. 6, a specific process of constructing a battery module using the outer casing is as follows:

when the battery pack is used, the main body part of the battery pack is placed into the battery accommodating cavity 6 of the U-shaped underframe 21, then the top plate 22 and the U-shaped underframe 21 are connected to form the inner frame 2, at the moment, the poles of each single battery in the main body part of the battery pack extend out of the second through holes 211, the temperature sensor on the single battery extends out of the third through holes 212, then the PCB is mounted on the top plate 22, after the connection of the PCB and the main body of the battery pack is completed, the electric appliance component is placed into the electric appliance accommodating cavity 7 of the U-shaped underframe 21, after the electric appliance component and the PCB are electrically connected, the inner frame 2 with the main body part of the battery pack and the electric appliance component is inserted and fixed into the outer cylinder body 1, and finally the end covers 8 are mounted on two sides of the protective cylinder, so that the battery module is manufactured. The outer cylinder 1 applies clamping force to the battery pack therein through the inner frame 2, so that the battery pack is firmly fixed therein, and is not easy to damage due to shaking during use or handling.

The terms first and second and the like in the description and in the claims of embodiments of the utility model, are used for distinguishing between different objects and not necessarily for describing a particular sequential order of objects. For example, the first and second blocks, etc. are used to distinguish between different blocks, and are not used to describe a particular sequence of blocks.

In the description of the embodiments of the present utility model, unless otherwise indicated, the meaning of "a plurality" means two or more. For example, a plurality of elements refers to two elements or more than two elements.

In embodiments of the utility model, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g." in an embodiment should not be taken as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

Claims

1. A battery pack casing, comprising an outer cylinder and an inner frame;

the two ends of the outer cylinder body are opened, the inner frame is arranged in the outer cylinder body in an inserting manner, and the outer cylinder body and the inner frame form tight fit in the circumferential direction; the outer wall of the inner frame is provided with at least one grafting prism or grafting groove extending along the grafting direction, and the inner wall of the corresponding outer cylinder body is provided with grafting grooves or grafting prisms matched with the grafting prisms or grafting grooves; the inner frame is made of insulating plastic, and the outer cylinder is made of aluminum alloy.

2. The battery pack casing of claim 1, wherein a partition is provided in the inner frame, the partition dividing the inner frame into an electrical receiving chamber for receiving electrical components and a battery receiving chamber for receiving a battery pack.

3. The battery pack casing of claim 1 or claim 2, wherein the inner frame is of a split construction comprising a top plate and a U-shaped chassis; the top plate is fixed at the opening end of the U-shaped underframe; at least one grafting prism or grafting groove is arranged on the outer walls of the side plates at the two sides of the U-shaped underframe.

4. The battery pack casing of claim 3, wherein the side plates on both sides of the U-shaped chassis are provided with a plurality of first through holes, and the top plate is provided with a plurality of second through holes and a plurality of third through holes.

5. The battery pack cage of claim 4 wherein the top plate is U-shaped and the opening direction is aligned with the opening direction of the U-shaped chassis for placement of a PCB board for signal transmission and acquisition.

6. The battery pack cage of claim 1 wherein both ends of the plug prism are provided with threaded holes for connecting the battery pack cage to an external end cap.