CN210778721U - Battery box and battery pack with same - Google Patents

Abstract

The application discloses a battery box and a battery pack with the battery box, wherein the battery box comprises a box body with an open top and a box cover arranged at the open top of the box body; the box includes: the box body bottom wall is vertically fixed on the periphery of the box body bottom wall and is a front side wall, a rear side wall, a left side wall and a right side wall which are distributed in a rectangular shape; the box is internally provided with: the two longitudinal partition plates are respectively welded and fixed with the left side wall and the right side wall and are arranged in parallel, and the at least three transverse partition plates are vertically and fixedly connected between the two longitudinal partition plates and are arranged in parallel; the longitudinal partition plates and the transverse partition plates form a separation chamber for arranging the battery modules. This battery box weight is little, structural strength is high, can stabilize the mounted position of fixing a position its interior battery module, makes battery module can pass through tests such as vibration, extrusion, collision.

Description

Battery box and battery pack with same

Technical Field

The present application relates to a battery box and a battery pack provided with the same.

Background

The battery pack for providing working power for the battery automobile mainly comprises an external battery box and a battery module accommodated in the battery box. The market has higher and higher requirements on the energy density of the power battery pack, and the lightweight design of the battery pack becomes a key point on the premise of ensuring the structural strength of the battery. The thickness reduction of the battery box wall can effectively reduce the weight to a certain extent, but has great influence on the structural strength. The safety of the battery module in the battery box can be ensured only by meeting the tests of vibration, extrusion, collision and the like.

The present application is hereby presented.

Disclosure of Invention

The purpose of the application is: the application provides a battery box and dispose battery package of this battery box, and this battery box weight is little, structural strength is high, can stabilize the mounted position of fixing a position its interior battery module, makes battery module can pass through tests such as vibration, extrusion, collision.

The technical scheme of the application is as follows:

a battery case, comprising:

an open-topped box body, an

The box cover is arranged at an opening at the top of the box body;

the box body comprises:

a bottom wall of the case body, and

the front side wall, the rear side wall, the left side wall and the right side wall are vertically fixed on the periphery of the bottom wall of the box body and are distributed in a rectangular shape;

the box is internally provided with:

two longitudinal partition plates which are respectively welded and fixed with the left side wall and the right side wall and are arranged in parallel with each other, and

at least three transverse clapboards which are vertically and fixedly connected between the two longitudinal clapboards and are arranged in parallel with each other;

and a separation chamber for arranging the battery modules is formed between the longitudinal partition plate and the transverse partition plate.

The longitudinal partition plate is provided with a plurality of clamping grooves which are arranged at intervals along the length direction of the longitudinal partition plate, and the end part of the transverse partition plate is embedded in the clamping grooves.

And the transverse partition plate and the longitudinal partition plate are welded and fixed.

The transverse partition plate is composed of an upper plate body, a lower plate body, a left plate body and a right plate body which are arranged in a quadrilateral enclosing manner, wherein the right plate body is integrally formed at the middle part of the vertical direction with a transverse extending rib which is attached to the left plate body and is arranged in an attached mode.

The upper plate body, the lower plate body, the left plate body and the right plate body are of an integrated structure.

A plurality of lightening holes are densely distributed on the left plate body and the right plate body.

The upper plate body is provided with a plurality of screw holes.

The longitudinal baffle comprises an upper plate body, a lower plate body, a left plate body and a right plate body which are arranged in a quadrilateral enclosing manner, wherein a transverse extending rib is integrally formed in the middle of the right plate body in the vertical direction and is attached to the left plate body to form an inner concave rib.

The longitudinal partition plate and the transverse partition plate are made of steel.

A battery pack comprises a battery box with the structure and a battery module contained in the battery box, wherein the battery module is attached to and arranged in the separation cavity.

The application has the advantages that:

this application is at vertical baffle and the transverse baffle of the inside welded fastening of box of battery box arranging to form a plurality of compartments between vertical baffle and transverse baffle, the battery module pastes and arranges in separating the intracavity, utilizes vertical baffle and transverse baffle to inject the battery module, prevents that the battery module from rocking at the incasement. And set up unusual additional strengthening and lightening hole on the baffle, can not increase the battery box dead weight excessively when promoting battery box structural strength, make battery module can pass through tests such as vibration, extrusion, collision.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic perspective view of a battery pack according to an embodiment of the present application;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is an enlarged view of the portion X of FIG. 2;

FIG. 4 is a schematic cross-sectional structural view of a transverse partition in an embodiment of the present application;

wherein: 1-box body, 2-longitudinal partition board, 201-clamping groove, 3-transverse partition board, 301-upper board body, 302-lower board body, 303-left board body, 304-right board body, 301 a-screw hole, 304 a-inner convex rib and 4-partition chamber.

Detailed Description

The present application will be described in further detail below with reference to the accompanying drawings by way of specific embodiments. The present application may be embodied in many different forms and is not limited to the embodiments described in the present embodiment. The following detailed description is provided to facilitate a more thorough understanding of the present disclosure, and the words used to indicate orientation, top, bottom, left, right, etc. are used solely to describe the illustrated structure in connection with the accompanying figures.

One skilled in the relevant art will recognize, however, that one or more of the specific details can be omitted, or other methods, components, or materials can be used. In some instances, some embodiments are not described or not described in detail.

Furthermore, the technical features, aspects or characteristics described herein may be combined in any suitable manner in one or more embodiments. It will be readily appreciated by those of skill in the art that the order of the steps or operations of the methods associated with the embodiments provided herein may be varied. Thus, any sequence in the figures and examples is for illustrative purposes only and does not imply a requirement in a certain order unless explicitly stated to require a certain order.

The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).

Fig. 1 to 4 show an embodiment of the battery box of the present application, which has a square outer contour and includes a box body 1 with an open top and a box cover (not shown) disposed at the open top of the box body, wherein the box body 1 includes a box bottom wall and a front side wall, a rear side wall, a left side wall and a right side wall which are vertically fixed around the box bottom wall and are distributed in a rectangular shape.

The key improvement of the embodiment is that two longitudinal partition plates 2 and five transverse partition plates 3 for limiting the position of the inward battery module are arranged in the box body 1, the two longitudinal partition plates 2 are respectively welded and fixed with the left side wall and the right side wall of the box body 1, the five transverse partition plates 3 are vertically and fixedly connected between the two longitudinal partition plates, and the five transverse partition plates 3 are also arranged in parallel with each other. Thus, a plurality of (in particular, four in the present embodiment) compartments 4 for arranging the battery modules are formed between the longitudinal partition walls 2 and the lateral partition walls 3.

In practical application, when a plurality of battery modules are respectively arranged in the separated cavities 4 in an abutting mode to form a battery pack for providing working power for the electric automobile, the longitudinal partition plates 2 and the transverse partition plates 3 can limit the positions of the internal battery modules, and the battery modules are prevented from shaking in the box. In the driving process of the automobile, the battery module extrudes the transverse baffle 3 due to inertia during emergency braking, and the transverse baffle 3 is stressed greatly. In this regard, the structure of the transverse baffle 3 is designed to improve the bending strength. Specifically, the method comprises the following steps:

the transverse partition plate 3 is composed of an upper plate body 301, a lower plate body 302, a left plate body 303 and a right plate body 304 which are arranged in a quadrilateral enclosing manner, and the right plate body 304 is integrally formed with an inward concave rib 304a which extends transversely and is arranged along with the left plate body 303 in an abutting manner in the middle in the vertical direction.

The upper plate body 301, the lower plate body 302, the left plate body 303 and the right plate body 304 are of an integrated structure and are all made of steel. The concave rib 304a of the right plate body 304 is formed by press working the right plate body 304.

In order to reduce the weight of each transverse partition 3 and increase the energy density of the battery pack, a plurality of lightening holes (not shown) are densely distributed on the left plate 303 and the right plate 304.

Further, in the present embodiment, a plurality of screw holes 301a are formed at intervals on the upper plate 301 of the transverse partition plate 3, so that the pressing bar pressed above the battery module can be locked by screws through the screw holes.

The fixed connection mode of the transverse partition board 3 and the longitudinal partition board 2 is as follows: the longitudinal clapboard 2 is provided with a plurality of clamping grooves 201 which are arranged at intervals along the length direction of the longitudinal clapboard, the end part of the transverse clapboard 3 is embedded in the clamping grooves 201, and the transverse clapboard 3 and the longitudinal clapboard 2 are welded and fixed at the embedded part of the transverse clapboard 3 and the longitudinal clapboard 2.

Longitudinal baffle 2 has adopted the structural style the same with transverse baffle 3, and it also comprises upper plate body, lower plate body, left plate body and the right plate body that is the quadrangle and encloses to close the arrangement, and right plate body has a horizontal extension and with the middle part integrated into one piece of vertical direction the concave muscle that the left plate body pastes and arranges. And the upper plate body, the lower plate body, the left plate body and the right plate body of the longitudinal partition plate are also made of steel.

The above embodiments are only for illustrating the technical concepts and features of the present application, and the purpose of the embodiments is to enable people to understand the content of the present application and implement the present application, and not to limit the protection scope of the present application. All equivalent changes and modifications made according to the spirit of the main technical scheme of the application are covered in the protection scope of the application.

Claims (10)

1. A battery case, comprising:

an open-topped tank (1), an

The box cover is arranged at an opening at the top of the box body;

the box (1) comprises:

a bottom wall of the case body, and

the front side wall, the rear side wall, the left side wall and the right side wall are vertically fixed on the periphery of the bottom wall of the box body and are distributed in a rectangular shape;

the device is characterized in that the box body (1) is internally provided with:

two longitudinal partitions (2) welded and fixed to the left and right side walls, respectively, and arranged parallel to each other, and

at least three transverse clapboards (3) which are vertically and fixedly connected between the two longitudinal clapboards and are arranged in parallel;

a separation chamber (4) for arranging battery modules is formed between the longitudinal partition plate (2) and the transverse partition plate (3).

2. The battery box according to claim 1, characterized in that the longitudinal partition (2) is provided with a plurality of slots (201) arranged at intervals along the length direction of the longitudinal partition, and the ends of the transverse partition (3) are embedded in the slots (201).

3. A battery box according to claim 2, characterised in that the transverse partitions (3) are welded to the longitudinal partitions (2).

4. The battery box according to claim 1, characterized in that the transverse partition (3) is composed of an upper plate body (301), a lower plate body (302), a left plate body (303) and a right plate body (304) which are arranged in a quadrangular surrounding manner, and the right plate body (304) is integrally formed with an inner concave rib (304a) which extends transversely and is arranged to be attached to the left plate body (303) in the middle of the vertical direction.

5. The battery box according to claim 4, characterized in that the upper plate body (301), the lower plate body (302), the left plate body (303) and the right plate body (304) are of an integral structure.

6. The battery box according to claim 4, characterized in that a plurality of lightening holes are densely distributed on the left plate body (303) and the right plate body (304).

7. The battery box according to claim 4, characterized in that the upper plate (301) is provided with a plurality of screw holes (301 a).

8. The battery box according to claim 1, characterized in that the longitudinal partition (2) is composed of an upper plate body, a lower plate body, a left plate body and a right plate body which are arranged in a quadrangular surrounding manner, and the right plate body is integrally formed with a transversely extending concave rib which is arranged to be attached to the left plate body in the middle of the vertical direction.

9. A battery box according to claim 1, characterised in that the longitudinal partitions (2) and the transverse partitions (3) are both steel.

10. A battery pack comprising a battery box and a battery module accommodated in the battery box, wherein the battery box is the battery box according to any one of claims 1 to 9, and the battery module is arranged in the separation chamber (4).

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