CN217009447U

CN217009447U - Battery pack

Info

Publication number: CN217009447U
Application number: CN202220639100.9U
Authority: CN
Inventors: 李登科; 何亚飞; 黄志辰
Original assignee: Envision Power Technology Jiangsu Co Ltd; Envision Ruitai Power Technology Shanghai Co Ltd
Current assignee: Envision Power Technology Jiangsu Co Ltd; Envision Ruitai Power Technology Shanghai Co Ltd
Priority date: 2022-03-22
Filing date: 2022-03-22
Publication date: 2022-07-19
Anticipated expiration: 2032-03-22

Abstract

The utility model belongs to the technical field of batteries, and discloses a battery pack which comprises a battery module and a box body, wherein a first positioning part is arranged on the outer side wall of the battery module, the box body comprises a box body frame and a box body bottom plate, a second positioning part is arranged on the inner side wall of the box body frame, the battery module is arranged in the box body frame, the first positioning part is matched with the second positioning part to limit the position of the battery module in the box body frame, and the box body bottom plate covers an opening at the bottom of the box body frame. First location portion and second location portion cooperate, inject the position of battery module in the box frame, and the box bottom plate covers in the bottom opening of box frame to fix the battery module in the box frame. The embodiment saves structures such as fixed beams and bolts, saves occupation of space, improves the space utilization rate, improves the energy density, saves the assembly of a plurality of bolts, and improves the production efficiency.

Description

Battery pack

Technical Field

The utility model belongs to the technical field of batteries, and particularly relates to a battery pack.

Background

The battery module is fixed in the box and makes up formation battery package, and among the prior art, be provided with the fixed beam on the box, the battery module passes through the bolt fastening on the fixed beam to realize the equipment of box and battery module. And the fixed beam occupies great space to be unfavorable to improving battery package holistic space utilization and energy density, simultaneously, because battery module's fixed need install a considerable number of bolts, be unfavorable for production efficiency's promotion.

Therefore, a battery pack is needed to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a battery pack, which is used for improving the space utilization rate, the energy density and the production efficiency of the whole battery pack.

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

the utility model provides a battery pack, includes battery module and box, be provided with first location portion on the lateral wall of battery module, the box includes box frame and box bottom plate, be provided with second location portion on the inside wall of box frame, the battery module set up in the box frame, first location portion with second location portion cooperatees, in order to inject the battery module is in position in the box frame, the box bottom plate cover in the bottom opening of box frame.

As a preferable aspect of the battery pack, the first positioning portion is a protruding portion, the second positioning portion is a stepped surface facing the bottom plate of the case, and the protruding portion abuts against the stepped surface.

As a preferable technical solution of the battery pack, a side surface of the protruding portion facing away from the bottom plate of the case is a lead-in inclined surface.

As an optimal technical scheme of the battery pack, two ends of the protruding portion respectively extend to two opposite vertical edges of the outer side surface of the battery module, and two ends of the step surface respectively extend to two opposite vertical edges of the inner side surface of the box frame.

As a preferable technical solution of the above battery pack, a plurality of grooves are formed in a side surface of the protruding portion facing the step surface, the grooves are spaced apart from each other along a length direction of the protruding portion, a plurality of protrusions are formed in the step surface, and the protrusions are disposed in the grooves in a one-to-one correspondence.

As a preferable technical solution of the above battery pack, one end of the groove extends to a side surface of the protruding portion away from the battery module.

As a preferable technical solution of the battery pack, the protrusion is disposed on an edge of an outer side wall of the battery module, the edge being close to the bottom plate of the case.

As a preferable mode of the above battery pack, the protruding part is integrally formed with an outer side plate of the battery module.

As a preferable technical solution of the above battery pack, the bottom plate of the case is bonded to the bottom of the battery module through a heat conductive adhesive layer.

As a preferable technical solution of the above battery pack, the first positioning portions are disposed on a plurality of outer side walls of the battery module, and the second positioning portions are disposed on a plurality of outer side walls of the case frame.

The utility model has the beneficial effects that:

the utility model provides a battery pack, wherein a first positioning part is arranged on the outer side wall of a battery module, a second positioning part is arranged on the inner side wall of a box body frame, the battery module is arranged in the box body frame, the first positioning part is matched with the second positioning part to limit the position of the battery module in the box body frame, and a box body bottom plate covers an opening at the bottom of the box body frame, so that the battery module is fixed in the box body frame. According to the battery pack provided by the utility model, structures such as a fixed beam and a bolt are omitted, the occupied space is saved, the integral space utilization rate of the battery pack is improved, the structure of the battery pack is compact, the energy density is improved, meanwhile, the assembly of a plurality of bolts is omitted, and the production efficiency is improved.

Drawings

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

Fig. 1 is a schematic structural diagram of a battery module provided in an embodiment of the present invention in a positive state;

FIG. 2 is a schematic structural diagram of a case frame in a front-mounted state according to an embodiment of the present invention;

fig. 3 is an exploded view of a battery pack provided by an embodiment of the present invention in an upside-down state;

FIG. 4 is an enlarged view at A in FIG. 3;

fig. 5 is a schematic structural view of the battery module according to the embodiment of the present invention when the battery module is reversely mounted in the case frame;

FIG. 6 is a schematic view of the structure of FIG. 5 after the bottom plate of the case is bonded.

In the figure:

1. a battery module; 2. a box body; 3. a heat-conducting adhesive layer;

11. a projection; 21. a box frame; 22. a box body bottom plate;

111. leading in an inclined plane; 112. a groove; 211. a step surface; 212. and (4) protruding.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar parts throughout, or parts having the same or similar functions. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, unless otherwise specifically stated or limited, the terms "connected," "connected," and "mounted" are to be construed broadly and may include, for example, mounting connections, releasable connections, mechanical connections, electrical connections, direct connections, indirect connections through an intermediary, communication between two elements, or an interaction between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, unless otherwise explicitly specified or limited, the first feature "on" or "under" the second feature may include the first feature and the second feature being in direct contact, and may also include the first feature and the second feature not being in direct contact but being in contact via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.

As shown in fig. 1 to 6, the present embodiment provides a battery pack, which includes a battery module 1 and a box body 2, a first positioning portion is disposed on an outer side wall of the battery module 1, the box body 2 includes a box body frame 21 and a box body bottom plate 22, a second positioning portion is disposed on an inner side wall of the box body frame 21, the battery module 1 is disposed in the box body frame 21, the first positioning portion and the second positioning portion are matched with each other to limit a position of the battery module 1 in the box body frame 21, and the box body bottom plate 22 covers a bottom opening of the box body frame 21.

When the battery pack provided by the embodiment installs the battery module 1 in the box frame 21, the first positioning part and the second positioning part are matched with each other, so that the position of the battery module 1 in the box frame 21 is limited, and then the box bottom plate 22 covers the bottom opening of the box frame 21, so that the battery module 1 is fixed in the box 2. The battery pack that this embodiment provided has saved fixed beam and bolt isotructure, has saved the occupation to the space, has improved the holistic space utilization of battery pack, makes the compact structure of battery pack moreover, improves energy density, has saved the equipment of a plurality of bolts simultaneously, has improved production efficiency.

Alternatively, one of the first positioning portion and the second positioning portion is the projecting portion 11, and the other is the stepped surface 211 facing the projecting portion 11, and the projecting portion 11 abuts against the stepped surface 211 to restrict the position of the battery module 1.

Specifically, in the present embodiment, as shown in fig. 1 to 4, the first positioning portion is the protruding portion 11, the second positioning portion is a step surface 211 facing the bottom plate 22 of the box body, and the protruding portion 11 abuts on the step surface 211. The step surface 211 abuts against the projection 11, and restricts upward movement of the battery module 1 relative to the case frame 21, where the upward movement indicates upward displacement of the battery module 1 in the normal position; meanwhile, the case bottom plate 22 covers the bottom opening of the case frame 21, that is, the case bottom plate 22 restricts downward movement of the battery module 1 relative to the case frame 21, thereby firmly fixing the battery module 1 in the case 2. In the battery pack provided by the present embodiment, during assembly, the case frame 21 is turned upside down, so that the bottom opening of the case frame 21 faces upward, and the battery module 1 is loaded into the case frame 21 from the bottom opening of the case frame 21, as shown in fig. 5; then, installing and covering the box body bottom plate 22 on the bottom opening of the box body frame 21, as shown in fig. 6; and after the assembly, turning over to a standing state to finish the assembly.

Specifically, the thickness of the protruding part 11 is 5-10mm, so that the occupied space is small while a certain structural strength requirement is met.

Specifically, the side of the protruding portion 11 facing away from the box bottom plate 22 is a lead-in slope 111. The introduction slope 111 is provided so that the protrusion 11 slides into and abuts against the inner wall of the case frame 21, and moves to abut against the step surface 211. Accordingly, the stepped surface 211 is provided as an inclined surface in the same direction as the introduction inclined surface 111.

Alternatively, in other embodiments, a plurality of protrusions 11 are provided at intervals on the same outer sidewall of the battery module 1, and correspondingly, a plurality of stepped surfaces 211 are provided at intervals on the same inner sidewall of the case frame 21.

In the present embodiment, a projection 11 is provided on one outer side wall of the battery module 1, and a step surface 211 is provided on one inner side wall of the case frame 21. Specifically, both ends of the protruding portion 11 extend to two opposite vertical sides of the outer side surface of the battery module 1, respectively, and both ends of the step surface 211 extend to two opposite vertical sides of the inner side surface of the case frame 21, respectively. This kind of setting makes the butt area of bulge 11 and step face 211 bigger for box frame 21 is better to battery module 1's spacing effect.

Specifically, the side of the protruding portion 11 facing the step surface 211 is provided with a plurality of grooves 112 spaced from each other along the length direction thereof, the step surface 211 is provided with a plurality of protrusions 212 spaced from each other, and the plurality of protrusions 212 are disposed in the plurality of grooves 112 in a one-to-one correspondence. The cooperation of the groove 112 and the projection 212 makes the positioning of the battery module 1 in the case frame 21 more accurate.

More specifically, the protrusions 212 are wedge-shaped structures, and the grooves 112 are wedge-shaped grooves fitted with the protrusions 212, so that the battery module 1 is more accurately and firmly positioned.

Specifically, one end of the groove 112 extends to the side of the projection 11 facing away from the battery module 1. That is, the groove 112 can be seen from the side, and when the groove 112 and the projection 212 are seen from the side, alignment between the groove 112 and the projection is facilitated, thereby further improving the assembling efficiency.

More specifically, the protrusion 11 is provided to the edge of the outer side wall of the battery module 1 near the case bottom plate 22.

Specifically, the protruding portion 11 and the outer side plate of the battery module 1 are integrally formed, so that the production steps are simplified, and the processing cost is reduced.

Specifically, after the battery module 1 is placed upside down in the case frame 21, the case bottom plate 22 is bonded to the bottom of the battery module 1 via the thermal conductive adhesive layer 3.

Optionally, a plurality of outer side walls of the battery module 1 are provided with a first positioning portion, and a plurality of outer side walls of the box frame 21 are provided with a second positioning portion. This kind of setting makes box frame 21 more stable, firm to battery module 1 location. Specifically, as shown in fig. 1, the battery module 1 is provided with projections 11 on two opposite short side plates. Of course, the projections 11 may be provided on two opposite long side plates; in the case of high mechanical requirements, the protruding portions 11 may be disposed on all four side plates of the battery module 1, and in the above three cases, the case frame 21 is provided with corresponding number and position of step surfaces 211.

Optionally, in other embodiments, the first positioning portion may be an inverted U-shaped structure, an outer wall of one side plate of the inverted U-shaped structure is connected to an outer side wall of the battery module 1, and two ends of the inverted U-shaped structure extend to two opposite vertical edges of an outer side surface of the battery module 1 respectively; the card that second location portion extends for towards box bottom plate 22 is protruding, the protruding inside wall with box frame 21 of card has the clearance, when battery module 1 is poured into box frame 21, the protruding U type inslot that penetrates the type of falling U structure of card, the other curb plate of the type of falling U structure penetrates in the clearance between the protruding inside wall with box frame 21 of card, thereby restricted battery module 1 and moved up for box frame 21, the upwards aversion of battery module 1 when just putting the state is shown in the shifting up of here.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a battery pack, includes battery module (1) and box (2), its characterized in that, be provided with first location portion on the lateral wall of battery module (1), box (2) are including box frame (21) and box bottom plate (22), be provided with second location portion on the inside wall of box frame (21), battery module (1) set up in box frame (21), first location portion with second location portion cooperatees, in order to inject battery module (1) is in position in box frame (21), box bottom plate (22) cover in the bottom opening of box frame (21).

2. The battery pack according to claim 1, wherein the first positioning portion is a protruding portion (11), the second positioning portion is a stepped surface (211) facing the case bottom plate (22), and the protruding portion (11) abuts against the stepped surface (211).

3. The battery pack according to claim 2, wherein the side of the protrusion (11) facing away from the case bottom plate (22) is a lead-in slope (111).

4. The battery pack according to claim 2, wherein both ends of the protruding portion (11) extend to two opposite vertical edges of the outer side surface of the battery module (1), respectively, and both ends of the stepped surface (211) extend to two opposite vertical edges of the inner side surface of the case frame (21), respectively.

5. The battery pack according to claim 4, wherein the side of the protruding portion (11) facing the step surface (211) is formed with a plurality of grooves (112) spaced apart from each other along the length direction thereof, the step surface (211) is formed with a plurality of protrusions (212) spaced apart from each other, and the plurality of protrusions (212) are disposed in the plurality of grooves (112) in a one-to-one correspondence.

6. Battery pack according to claim 5, characterized in that one end of the groove (112) extends to the side of the projection (11) facing away from the battery module (1).

7. The battery pack according to claim 2, wherein the protrusion (11) is provided to an edge of an outer side wall of the battery module (1) near the case bottom plate (22).

8. The battery pack according to claim 5, wherein the protrusions (11) are integrally formed with an outer side plate of the battery module (1).

9. The battery pack according to any one of claims 1 to 8, wherein the case bottom plate (22) is bonded to the bottom of the battery module (1) by a heat conductive adhesive layer (3).

10. The battery pack according to any one of claims 1 to 8, wherein the first positioning portions are provided on a plurality of outer side walls of the battery module (1), and the second positioning portions are provided on a plurality of outer side walls of the case frame (21).