CN218867276U

CN218867276U - Box structure of battery pack

Info

Publication number: CN218867276U
Application number: CN202222643005.9U
Authority: CN
Inventors: 万梓; 谭建国; 董晓利; 唐朱旦; 张朝
Original assignee: Zhejiang Nandu Energy Technology Co ltd; Zhejiang Narada Power Source Co Ltd
Current assignee: Zhejiang Nandu Energy Technology Co ltd; Zhejiang Narada Power Source Co Ltd
Priority date: 2022-09-29
Filing date: 2022-09-29
Publication date: 2023-04-14
Anticipated expiration: 2032-09-29

Abstract

The utility model discloses a box structure of battery package aims at solving the box structure of current battery package and adopts a body structure, leads to the not enough of vertical accurate inside subassembly that inserts. The utility model discloses an including the bottom plate with be located a plurality of bounding walls of bottom plate outer fringe position, bottom plate and bounding wall are formed with the appearance chamber that is used for holding the battery monomer, and the bounding wall includes curb plate that is located bottom plate width direction both ends and end plate and the back plate that is located bottom plate length direction both ends, and the end plate includes base plate and mounting panel, and the mounting panel symmetry sets up in the left and right sides of base plate, mounting panel and curb plate fixed connection, and the both ends difference swing joint of back plate is on the curb plate. Through above-mentioned structure, reduced the required precision of putting into interior subassembly, also allowed more angles of putting into.

Description

Box structure of battery pack

Technical Field

The utility model relates to a battery field, more specifically says that it relates to a box structure of battery package.

Background

The battery pack can be used as a matching component of new energy sources such as wind energy and light energy. New energy such as wind energy, light energy and the like has the problem of unbalance in time latitude, and corresponding energy storage components need to be configured. The battery pack can also be used as a supplement to the existing power grid and an alternating current power supply of important equipment, so that the normal work is prevented from being influenced by sudden power failure of the mains supply, the equipment is prevented from being damaged, power supply pollution such as surge, instantaneous high/low voltage, wire noise, frequency offset and the like in the mains supply is eliminated, the power supply quality is improved, and a high-quality power supply is provided for computers and the like.

In order to achieve the strength of the whole structure of the existing battery pack, a bottom plate and a coaming of a box body are generally fixed, and even the battery pack is of an integrated structure through a metal plate and a welding process. This certainly structurally improves the case strength of the battery pack, but is not conducive to the insertion of the battery cells and the associated internal fittings, which often can only be inserted in a vertically inserted manner into a predetermined position. For the work of putting into interior subassembly, there are two kinds of means of manual work and arm generally, and manual mode speed is slow, and intensity of labour is big, and the means of arm then has higher requirement to the precision.

Chinese patent publication No. CN212571115U, entitled non-modular air-cooled battery pack system, discloses a non-modular air-cooled battery pack system. The system comprises a lower box body and an upper cover, wherein the lower box body comprises a bottom plate and four side walls, a system air inlet channel and an air outlet channel are arranged on the first side wall, and a high-voltage connector and a low-voltage connector are arranged on the second side wall; the bottom of the box body is provided with a plurality of clamping grooves which are arranged in parallel and used for fixing each electric core, an internal air channel is arranged between every two adjacent electric cores, the internal air channel forms a bow-shaped structure by horizontal planes and vertical planes which are alternately connected, and the top of the internal air channel is provided with a structural pressing strip; one end of the internal air duct is connected with the system air inlet duct or the system air outlet duct of the first side wall, and the other end of the internal air duct is connected with the series air duct which is used for communicating the cavities of the internal air ducts; cooling air enters from the system air inlet duct, cools the battery cell through the internal air duct communicated by the series air duct, and finally flows out from the system air outlet duct. This application is typical battery package box structure that only can be vertical accurate the inserting, is unfavorable for putting into of inside subassembly promptly.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes current battery package's box structure adopts a body structure, leads to the not enough of only vertical accurate inserting the inner assembly, provides a battery package's box structure, and it provides the box structure of a swing joint's battery package, has reduced the required precision of putting into the inner assembly, also allows more angles of putting into.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides a box structure of battery package, includes the bottom plate and is located a plurality of bounding walls of bottom plate outer fringe position, and bottom plate and bounding wall are formed with and are used for holding the free appearance chamber of battery, and the bounding wall is including the curb plate that is located bottom plate width direction both ends and the end plate and the back plate that are located bottom plate length direction both ends, and the end plate includes base plate and mounting panel, and the mounting panel symmetry sets up in the left and right sides of base plate, mounting panel and curb plate swing joint, and the both ends difference swing joint of back plate is on the curb plate.

The utility model provides a box structure adopts the bottom plate to add the bounding wall to fix a position and fix the group battery of constituteing by a plurality of battery monomers. Corresponding to the mounting plate, two rows of battery packs are symmetrically arranged in a cavity formed by a box body structure formed by a bottom plate and a coaming. Two rows of battery packs are supported symmetrically by the base plate along with the mounting plate and are distributed on the left and right sides of the aforementioned cavity. The position relation of the coaming is determined by sequentially positioning the mounting plate by the base plate, the side plate by the mounting plate and the rear plate by the side plate, and the box body structure of the battery pack is realized. The mounting plate and the side plate can be connected through a fastener, and the fastener fixes the mounting plate and the side plate along the width direction. The side panels and the back panel may be connected using fasteners. The cross section of the mounting plate is U-shaped, the mounting plate and the substrate can be connected in a welding mode, and a cavity is formed by the connection of the mounting plate and the substrate. The bottom plate is a smooth flat plate. This structure allows to put into interior subassembly earlier, and the tolerance of putting that each interior subassembly allowed is big, will correspond the bounding wall again and put into along controlling with the fore-and-aft direction afterwards, and the bounding wall compares the interior subassembly of presetting the position skew with the angle and the coordinate and pushes away just to reset, has reduced the required precision of putting into interior subassembly through this kind of means, also allows more angles of putting into.

Preferably, the substrate and the base plate are integrally formed. The base plate and the bottom plate are of a metal plate integrated structure.

Preferably, the bottom plate is provided with a limiting flange for limiting the battery monomer. Like above, spacing turn-ups are by the panel beating shaping equally, and two liang of welding of spacing turn-ups after the shaping carry out spacing turn-ups position fixing.

Preferably, the rear plate is provided with a plurality of reinforcing ribs, the reinforcing ribs are arranged in the length direction along the width direction of the bottom plate, and the cross section of each reinforcing rib is U-shaped. The reinforcing rib plate improves the reliability of the box structure. The reinforcing rib reinforces the width direction.

Preferably, the side plate has a thickness at an outer edge position thereof, the side plate facing the battery cell, which is thicker than other positions. The outer fringe contact battery monomer of curb plate has the space that can circulate air between other positions and the free lateral wall of battery, increases the radiating efficiency of battery package.

Preferably, the wind channel beam frame is further included, the wind channel beam frame comprises an upper cover plate, a lower cover plate and an end cover plate, the upper cover plate and the lower cover plate are arranged along the length direction of the bottom plate, the upper cover plate and the lower cover plate are located between the two mounting plates, the base plate is provided with wind channel holes corresponding to the wind channel beam frame, the end cover plate is attached to the rear plate, and the end cover plate and the rear plate are provided with a plurality of corresponding wind channel holes. The air duct cover plate is used as an air duct structure of the main air duct, is used for reinforcing a box body structure of the battery pack, and is also used for positioning a battery monomer. One ends of the upper cover plate and the lower cover plate, which are far away from the end cover plate, are fixedly connected at the middle position of the substrate in a welding mode and keep an arrangement mode of one end above the other end, and the other ends of the upper cover plate and the lower cover plate are fixedly connected with the end cover plate in a welding mode. The upper cover plate and the lower cover plate can be provided with turned-over edges which are arranged in opposite directions, and the turned-over edges have the function of positioning the battery monomer and also have the function of increasing the contact area with the end cover plate. The air duct openings formed in the base plate, the end cover plate and the rear plate enable the air duct beam frame to generate an open cavity communicated with the outside atmosphere along the length direction of the base plate. When a fan is arranged on the base plate, after the air pressure difference is actively generated between the open cavity and the external atmospheric pressure, the corresponding air flow can be generated in the air duct beam frame in anticipation. The generated air flow and a branch air channel formed by the heat exchange plates arranged between the adjacent battery monomers arranged along the length direction generate air flow to take away heat. The air duct beam frame plays a role of an air duct and also plays a role of reinforcing the box body structure.

Preferably, the reinforcing rib plates are symmetrically arranged on the left side and the right side of the rear plate, vertical reinforcing columns are arranged between the two reinforcing rib plates and attached to the rear plate, and openings corresponding to the air duct openings are formed in the vertical reinforcing plates. The effect that the vertical reinforcement post played the reinforcing floor is similar, strengthens the structure of battery package equally, and is specific, and it strengthens the direction of height.

Preferably, the mounting plate is soldered to the substrate.

Compared with the prior art, the beneficial effects of the utility model are that: (1) The precision requirement for embedding the internal assembly is reduced, and more embedding angles are allowed;

(2) The coamings are mutually positioned, so that the structure is light, and the structure and the connection relation are simplified;

(3) The air duct beam frame positioned in the middle part is used as an air duct structure of the main air duct, is used for reinforcing the box body structure of the battery pack, and is also used for positioning the single batteries, and the structure is multiplexed, so that the box body structure of the battery pack is light.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a left side view of the present invention;

fig. 3 is an exploded view of the present invention;

fig. 4 is an exploded view from another perspective of the present invention;

in the figure:

the air duct structure comprises a bottom plate 1, side plates 2, end plates 3, a rear plate 4, a base plate 5, a mounting plate 6, a limiting flange 7, a reinforcing rib plate 8, an upper cover plate 9, a lower cover plate 10, an end cover plate 11, an air duct opening 12 and a vertical reinforcing column 13.

Detailed Description

The present disclosure is further illustrated by the following examples in conjunction with the accompanying drawings.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only relational terms determined for convenience in describing structural relationships of the parts or elements of the present disclosure, and do not refer to any parts or elements of the present disclosure, and are not to be construed as limiting the present disclosure.

In the present disclosure, terms such as "fixedly connected", "connected", and the like are to be understood in a broad sense, and mean either a fixed connection or an integrally connected or detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present disclosure can be determined on a case-by-case basis by persons skilled in the relevant art or technicians, and are not to be construed as limitations of the present disclosure.

The embodiment is as follows:

the utility model provides a box structure of battery package, as shown in fig. 1, 2, includes bottom plate 1 and a plurality of bounding walls that are located bottom plate 1 outer fringe position, and bottom plate 1 and bounding wall are formed with and are used for holding the free appearance chamber of battery, and the bounding wall is including the curb plate 2 that is located bottom plate 1 width direction both ends and the end plate 3 and the back plate 4 that are located bottom plate 1 length direction both ends.

As shown in fig. 3 and 4, the end plate 3 includes a base plate 5 and a mounting plate 6, the base plate 5 and the bottom plate 1 are in a unitary structure in some embodiments, and specifically, the base plate 5 and the bottom plate 1 are in a sheet metal unitary structure. The bottom plate 1 is provided with a limiting flange 7 for limiting the battery monomer. Like above, spacing turn-ups 7 are the same by the panel beating shaping, and two liang of welding of spacing turn-ups 7 after the shaping carry out the position location of spacing turn-ups 7.

The mounting plates 6 are symmetrically arranged on the left side and the right side of the base plate 5, the mounting plates 6 are fixedly connected with the side plates 2, and two ends of the rear plate 4 are respectively fixedly connected to the side plates 2. In some embodiments, the mounting plate 6 is soldered to the substrate 5. The cross section of the mounting plate 6 is U-shaped, the connection with the substrate 5 can adopt a welding mode, and a cavity is formed by the connection between the mounting plate and the substrate. In order to increase the reliability of this cavity, in some possible embodiments there are also respective stiffening plates abutting on the inner wall of the cavity, the cross section of which is also "U" shaped. A fan case for mounting a heat radiation fan is also provided between the two mounting plates 6. The fan frame is secured in some embodiments using a welding process and in other embodiments using fasteners.

The side plate 2 is thicker at the outer edge position than at other positions. The outer fringe contact battery monomer of curb plate 2, have the space that can the circulation air between other positions and the free lateral wall of battery, increase the radiating efficiency of battery package.

Still including the wind channel roof beam structure, the wind channel roof beam structure includes upper cover plate 9, lower cover plate 10 and tip apron 11, and upper cover plate 9 and lower cover plate 10 arrange along bottom plate 1's length direction, and upper cover plate 9 and lower cover plate 10 are located between two mounting panels 6, and base plate 5 corresponds the wind channel roof beam structure and is equipped with wind channel trompil 12, and tip apron 11 laminating back plate 4 is equipped with a plurality of wind channel trompils 12 that correspond the setting on tip apron 11 and the back plate 4. The air duct cover plate is used as an air duct structure of the main air duct, is used for reinforcing a box body structure of the battery pack, and is also used for positioning a battery monomer. The ends of the upper cover plate 9 and the lower cover plate 10 far away from the end cover plate 11 are fixedly connected to the middle position of the base plate 5 in a welding mode and keep an arrangement mode of being arranged up and down, and the end cover plate 11 is fixedly connected to the other ends of the upper cover plate 9 and the lower cover plate 10 in a welding mode. The upper cover plate 9 and the lower cover plate 10 may have flanges disposed opposite to each other, and the flanges have an effect of positioning the battery cell and an effect of increasing a contact area with the end cover plate 11. The provision of the duct openings 12 in the base plate 5, end cover plate 11 and backplate 4 enables the duct beam mount to create an open cavity along the length of the base plate 1 which communicates with the ambient atmosphere. When a fan is disposed on the base plate 5, and an air pressure difference is actively generated between the open cavity and the external atmospheric pressure, it is expected that a corresponding air flow will be generated in the air duct beam frame. The generated air flow and a branch air channel formed by the heat exchange plates arranged between the adjacent battery monomers arranged along the length direction generate air flow to take away heat.

The rear plate 4 is provided with a plurality of reinforcing rib plates 8, the length direction of the reinforcing rib plates 8 is arranged along the width direction of the bottom plate 1, and the cross sections of the reinforcing rib plates 8 are U-shaped. The reinforcing rib plate 8 improves the reliability of the box structure. The reinforcing rib 8 reinforces the width direction. The reinforcing rib plates 8 are symmetrically arranged on the left side and the right side of the rear plate 4, vertical reinforcing columns 13 are arranged between the two reinforcing rib plates 8, the vertical reinforcing columns 13 are attached to the rear plate 4, and holes corresponding to the air duct holes 12 are formed in the vertical reinforcing plates. The vertical reinforcing column 13 functions similarly to the reinforcing rib 8, and also reinforces the structure of the battery pack, specifically, reinforces the height direction.

The utility model provides a box structure adopts bottom plate 1 to add the bounding wall to fix a position and fix the group battery of constituteing by a plurality of battery monomers. Corresponding to the mounting plate 6, two rows of battery packs are symmetrically arranged in a cavity formed by a box body structure formed by the bottom plate 1 and the enclosing plate. The two rows of battery packs are supported by the bottom plate 1 and distributed on the left and right sides of the aforementioned cavity together with the mounting plate 6. The position relation of the coamings is determined by sequentially positioning the mounting plate 6 by the base plate 5, the side plate 2 by the mounting plate 6 and the rear plate 4 by the side plate 2, and the box body structure of the battery pack is realized. The mounting plate 6 and the side plate 2 can be connected through a fastener, and the fastener fixes the mounting plate 6 and the side plate 2 along the width direction.

The above-described embodiments are merely preferred embodiments of the present invention, which are not intended to be limiting in any way, and other variations and modifications are possible without departing from the scope of the invention as set forth in the following claims.

Claims

1. The utility model provides a box structure of battery package, characterized by, includes bottom plate and a plurality of bounding walls that are located bottom plate outer fringe position, and bottom plate and bounding wall are formed with and are used for holding the free appearance chamber of battery, and the bounding wall is including the curb plate that is located bottom plate width direction both ends and the end plate and the back plate that are located bottom plate length direction both ends, and the end plate includes base plate and mounting panel, and the mounting panel symmetry sets up in the left and right sides of base plate, mounting panel and curb plate swing joint, and the both ends difference swing joint of back plate is on the curb plate.

2. The case structure of battery pack as claimed in claim 1, wherein the base plate is integrally formed with the bottom plate.

3. The box structure of the battery pack as claimed in claim 2, wherein the bottom plate is provided with a limit flange for limiting the battery cell.

4. The battery pack case structure as claimed in claim 1, wherein the rear plate has a plurality of reinforcing ribs, the reinforcing ribs are arranged along the width direction of the bottom plate in the longitudinal direction, and the reinforcing ribs have a U-shaped cross section.

5. The battery pack case structure according to claim 1, wherein the side of the side plate facing the battery cells has a greater thickness at the outer edge than at other positions.

6. The battery pack case structure of claim 1, further comprising an air duct beam frame, wherein the air duct beam frame comprises an upper cover plate, a lower cover plate and an end cover plate, the upper cover plate and the lower cover plate are arranged along the length direction of the bottom plate, the upper cover plate and the lower cover plate are located between the two mounting plates, the base plate is provided with air duct openings corresponding to the air duct beam frame, the end cover plate is attached to the rear plate, and the end cover plate and the rear plate are provided with a plurality of air duct openings corresponding to the air duct openings.

7. The battery pack box structure as claimed in claim 4, wherein the reinforcing ribs are symmetrically disposed on the left and right sides of the rear plate, vertical reinforcing posts are disposed between the reinforcing ribs, the vertical reinforcing posts are attached to the rear plate, and openings corresponding to the openings of the air duct are disposed on the vertical reinforcing plates.

8. The battery pack case structure according to any one of claims 1 to 7, wherein the mounting plate is welded to the base plate.