CN219163574U - Battery pack and power device - Google Patents

Abstract

The utility model relates to the technical field of batteries, and particularly discloses a battery pack and a power device, wherein the battery pack comprises a shell, and the shell comprises: the side beam is provided with a supporting part on the inner side surface; the bottom plate is of a double-layer structure, and two ends of the bottom plate are respectively connected with one side beam. According to the battery pack, the bottom plate of the battery pack adopts a double-layer structure, the strength of the bottom plate is enhanced, the inner side surface of the side beam is provided with the supporting part, the bending resistance of the side beam is further ensured, and the two ends of the bottom plate and the side beam are connected in various assembly modes, so that the integral rigidity of the battery pack is improved and enhanced, and the risk brought by side column collision can be effectively avoided. In addition, the reinforcing layer arranged at the joint of the boundary beam and the bottom plate can also prevent oxidation and corrosion at the joint, so that the stability and the tightness of the joint of the shell are greatly improved.

Description

Battery pack and power device

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery pack and a power device.

Background

At present, along with the rapid development of new energy automobiles, the battery safety problem becomes an important link, the position of the side column collision of the electric automobile is just a battery pack area, and if the battery pack does not reach the safety standard, the battery pack is easy to be impacted and extruded in collision, fire and electricity leakage occur, and secondary accidents are formed.

The traditional battery package adopts individual layer bottom plate and boundary beam welded mode to assemble, this kind of assembly method, when the coping side post bumps, because the bulk strength of traditional battery package is not enough, the risk is bumped to the side post is higher, and, traditional battery package is accessible adjustment boundary beam structure, promote the bending resistance of boundary beam, but because the bottom plate intensity is not enough, still can make the battery package produce great deformation, thereby lead to the inside electric core module of battery package to receive the extrusion, it is great to make electric core module atress, there is the risk of blasting on fire, the security of battery package has greatly been influenced.

Therefore, there is an urgent need for a battery pack structure to solve the problem of insufficient overall rigidity in the conventional battery pack.

Disclosure of Invention

In view of the above, the utility model provides a battery pack and a power device, which aim to solve the problem of insufficient overall rigidity of the traditional battery pack.

In one aspect, the present utility model provides a battery pack comprising:

a housing;

the housing includes:

the side beam is provided with a supporting part on the inner side surface;

the bottom plate is of a double-layer structure, and two ends of the bottom plate are respectively connected with one side beam.

In some embodiments of the present application, the lower portion of the side rail is provided with a socket groove, and the end of the bottom plate is inserted into the socket groove.

In some embodiments of the present application, the lower portion of the boundary beam is further provided with a connection hole, the connection hole is relatively disposed on the upper side and the lower side of the plugging slot, and the connection hole penetrates through the plugging slot.

In some embodiments of the present application, a connecting piece is disposed in the connecting hole in a penetrating manner, and the connecting piece is used for connecting the bottom plate and the side beam together.

In some embodiments of the present application, the lower surface of the support portion is in the same plane as the inner top surface of the insertion groove, so that the upper surface of the bottom plate is in contact with the lower surface of the support portion after the end portion of the bottom plate is inserted into the insertion groove.

In some embodiments of the present application, the battery pack further comprises:

the longitudinal beams are uniformly arranged on the bottom plate and are clamped with the upper surface of the bottom plate.

In some embodiments of the present application, the upper surface of the base plate is provided with a clamping portion that interfaces with the crossbar Liang Xiangka.

In some embodiments of the present application, the thickness of the two ends of the base plate is less than the thickness of the middle of the base plate.

In some embodiments of the present application, the battery pack further comprises:

the reinforcing layer is arranged at the joint of the bottom plate and the boundary beam, and the reinforcing layer is also arranged at the joint of the bottom plate and the supporting part.

Compared with the prior art, the utility model has the beneficial effects that the strength of the bottom plate is enhanced by arranging the bottom plate with the double-layer structure, the support part is arranged on the inner side surface of the side beam, the bending resistance of the side beam is further ensured, after the two ends of the bottom plate are connected with the side beam, the whole rigidity of the shell of the battery pack can be greatly improved by the cooperation of the double-layer bottom plate and the reinforced side beam, the battery pack can be effectively prevented from being deformed after being extruded, the whole rigidity of the battery pack is effectively improved and enhanced, and the risk brought by the battery pack after being extruded can be effectively coped with.

Furthermore, the lower part of the side beam is provided with the inserting groove, so that the mounting position of the bottom plate can be effectively and accurately positioned, meanwhile, the bottom plate and the side beam can be rapidly assembled, and the assembly speed and the production efficiency of the battery pack are greatly improved.

Further, through set up the connecting hole at the upper and lower both sides relative position of boundary beam lower part jack groove to and set up the enhancement layer in bottom plate and boundary beam junction, insert the both ends portion of bottom plate and establish after the jack groove, can fasten boundary beam and bottom plate's junction through connecting piece and enhancement layer, when promoting the whole rigidity of battery package, the stability of reinforcing battery package casing, the life of extension casing, in addition, set up in boundary beam and bottom plate junction's enhancement layer can also prevent that oxidation and corruption from appearing in junction, greatly improved the stability and the tightness of casing junction.

Further, in the battery pack, the clamping part is arranged on the upper surface of the bottom plate in the shell, the vertical and horizontal Liang Xiangka are connected through the clamping part arranged on the bottom plate, the arranged vertical and horizontal beams can improve the strength of the middle part of the shell, meanwhile, the vertical and horizontal beams are connected with the bottom plate in a clamping way, the assembly can be completed quickly, the welding procedure is reduced, meanwhile, the vertical and horizontal beams are connected with the bottom plate in a clamping way, the assembly process is simple, and the assembly efficiency of the battery pack shell is greatly improved.

On the other hand, the utility model also provides a power device which comprises the battery pack.

The power device has the same beneficial effects as the battery pack, and is not described herein.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

fig. 1 is a schematic structural diagram of a housing according to an embodiment of the present utility model;

FIG. 2 is a front view of a housing provided in an embodiment of the present utility model;

FIG. 3 is a cross-sectional view of a housing provided by an embodiment of the present utility model;

FIG. 4 is a top view of a housing provided by an embodiment of the present utility model;

FIG. 5 is a bottom view of a housing provided in an embodiment of the present utility model;

FIG. 6 is a schematic diagram illustrating connection between a side rail and a bottom plate according to an embodiment of the present utility model;

FIG. 7 is a schematic diagram of connection between a longitudinal beam and a base plate according to an embodiment of the present utility model;

fig. 8 is a partial enlarged view at a in fig. 2.

In the figure: 100. edge beams; 110. a plug-in groove; 120. a support part; 130. a connecting piece; 140. a connection hole; 200. a bottom plate; 210. a clamping part; 220. a longitudinal beam; 230. a plug-in part; a clamping groove 221; 300. a first weld bead; 400. and a second weld pass.

Detailed Description

The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.

In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

The safety problem of the current battery pack is more and more important, and the effect of well transmitting collision force can be achieved only by mutually matching the battery shell structure and the vehicle body structure, and in a more tragic side collision accident, if the vehicle body is deformed and cannot absorb most of collision energy and deformation, the shell of the battery pack also needs to be provided with an anti-deformation structure and a design of utilizing a frame to absorb energy so as to ensure the safety and stability of an electric core inside the battery pack.

The casing of battery package in this embodiment is through adopting boundary beam and bilayer structure's the bottom plate that is provided with supporting part, and boundary beam and bottom plate are connected through the mode of pegging graft, not only can carry out quick assembly, can also promote the bulk rigidity of casing effectively.

In this embodiment, through setting up supporting part, the jack-in groove, the connecting hole, connecting piece and enhancement layer on the boundary beam, specifically, set up the jack-in groove in the boundary beam bottom, the upper and lower both sides of jack-in groove set up the connecting hole, wear to establish the connecting piece in the connecting hole, set up the enhancement layer in the junction that boundary beam and bottom plate were inserted and are established, and set up joint portion at the bottom plate upper surface, thereby realized the integrative assembly connection of boundary beam and bottom plate, when improving assembly efficiency, through the cooperation of double-deck bottom plate and boundary beam after strengthening, can greatly improve the overall rigidity of the casing of battery package, can prevent effectively that the battery package from receiving and producing the deformation after the extrusion, make the holistic rigidity of battery package promote effectively and strengthen, can effectually reply battery package receive the risk that brings after the extrusion.

The embodiment provides a battery pack, including the casing, the casing is box structure, and its inside is used for placing electric core or electric core module, carries out whole assembly to electric core or electric core module through the casing, simultaneously, and the casing can also prevent effectively that electric core or electric core module from receiving extrusion deformation, provides certain safety protection for electric core or electric core module.

Referring to fig. 1-5, in particular, the housing includes a side rail 100 and a bottom plate 200. The side sill 100 has a support 120 provided on an inner side thereof, a bottom plate 200 having a double-layered structure, and both ends of the bottom plate 200 are respectively connected to the side sill 100. The bottom plate 200 has a double-layer structure, the two ends of the bottom plate 200 are plug-in parts 230, the plug-in parts 230 at the two ends of the bottom plate 200 are respectively connected with the side beams 100, and after the side beams 100 and the bottom plate 200 are firmly connected together, the shell is formed, so that the battery cell or the battery cell module is placed.

In one embodiment of the present application, the lower portion of the side rail 100 is provided with a socket groove 110, and the end of the bottom plate 200 is inserted into the socket groove 110.

As shown in connection with fig. 2, 3 and 6, in one embodiment of the present application, the thickness of both end portions of the base plate 200 is smaller than the thickness of the middle portion of the base plate 200. The middle portion of the base plate 200 has a hollow double-layer structure, and the insertion portions 230 at the two ends have a solid single-layer structure, so that the insertion portions 230 at the two ends of the base plate 200 can be inserted into the insertion grooves 110 at the lower portion of the side beam 100 by making the thickness of the insertion portions 230 at the two ends of the base plate 200 smaller than the thickness of the middle portion of the base plate 200.

It can be appreciated that, the base plate 200 in this embodiment is of a double-layer structure, compared with a single-layer base plate adopted in a traditional battery pack case, the base plate 200 of the double-layer structure has higher strength, through the plug-in groove 110 formed at the lower part of the side beam 100, the size of the plug-in groove 110 is designed according to the size of the plug-in part 230 at the end of the base plate 200, so that the plug-in part 230 at the end of the base plate 200 is matched with the plug-in groove 110, and the plug-in part 230 can be inserted into the plug-in groove 110, thereby realizing the assembly of the side beam 100 and the base plate 200. Meanwhile, the fitting arrangement of the insertion groove 110 and the insertion portion 230 can effectively and accurately position the installation position of the bottom plate 200, and can also enable the bottom plate 200 and the side beam 100 to be rapidly assembled, so that the assembly speed and the production efficiency of the battery pack are greatly improved.

Referring to fig. 3, in one embodiment of the present application, the lower surface of the supporting portion 120 is in the same plane with the inner top surface of the insertion groove 110 so that the upper surface of the bottom plate 200 contacts with the lower surface of the supporting portion 120 after the end portion of the bottom plate 200 is inserted into the insertion groove 110. The supporting portion 120 in this embodiment may be any structure that can achieve a supporting effect, such as a triangle structure, a trapezoid structure, a square structure, an arc structure, etc., and those skilled in the art can perform the setting according to specific situations, and the embodiment is not limited specifically.

It can be understood that the inner side surface of the side beam 100 in this embodiment is further provided with a supporting portion 120, and the lower surface of the supporting portion 120 is on the same horizontal plane with the inner top surface of the plugging slot 110, so that the lower surface of the supporting portion 120 contacts with the upper surface of the bottom plate 200 plugged in the plugging slot 110, and the bending resistance of the side beam 100 is further enhanced by the arrangement of the supporting portion 120, and the stability of the battery pack case is further improved by contacting the lower surface of the supporting portion 120 with the upper surface of the bottom plate 200, so that the overall rigidity of the battery pack is further improved.

In a specific embodiment of the present application, the lower portion of the side beam 100 is further provided with a connection hole 140, the connection hole 140 is oppositely disposed at the upper and lower sides of the socket groove 110, and the connection hole 140 penetrates through the socket groove 110.

In one embodiment of the present application, the connecting member 130 is inserted into the connecting hole 140, and the connecting member 130 is used to connect the bottom plate 200 with the side rail 100.

Specifically, the connection between the side beam 100 and the bottom plate 200 is achieved by the connection member 130 and the connection hole 140, any manner such as riveting, screwing, clamping, etc. may be selected, and any structural member capable of meeting the connection purpose may be used as the connection member 130 in the present application, for example, by using a rivet nut, a screw nut, a rivet, a clamping block, etc. as the connection member 130, and by inserting the rivet nut, the screw, the rivet, the clamping block, etc. into the connection hole 140, the connection assembly of the side beam 100 and the bottom plate 200 is achieved. However, the connection member 130 in the present application is not limited to the above-mentioned type of the components such as the rivet nut, the screw nut, the rivet, the clamping block, etc., and the person skilled in the art can select the connection member 130 according to the actual situation.

It can be understood that, in this embodiment, the connecting holes 140 are formed at corresponding positions on the upper and lower sides of the inserting groove 110 at the lower portion of the boundary beam 100, after the bottom plate 200 is inserted into the inserting groove 110, the boundary beam 100 and the bottom plate 200 are connected together by penetrating the connecting piece 130 into the connecting holes 140, and the connecting piece 130 and the connecting holes 140 are arranged, so that the connection portion between the boundary beam 100 and the bottom plate 200 is fastened, the process is simple, the assembly efficiency is high, the stability of the connection portion between the boundary beam 100 and the bottom plate 200 is further improved, and the overall rigidity of the battery pack is further improved.

As can be understood from the description of fig. 2 and 8, in this embodiment, the welding bead is further provided at the plug connection between the bottom plate 200 and the side sill 100, including the first welding bead 300 provided at the plug connection between the bottom plate 200 and the lower side of the side sill 100 and the second welding bead 400 provided at the plug connection between the bottom plate 200 and the upper side of the side sill 100, and in the connection process between the side sill 100 and the double-layer bottom plate 200, the connection between the side sill 100 and the bottom plate 200 can be reinforced again by welding, and in addition, only the first welding bead 300 or both the first welding bead 300 and the second welding bead 400 can be selected according to the actual situation, and the first welding bead 300 and the second welding bead 400 are welded at the same time, so that the fastening effect at the connection between the side sill 100 and the bottom plate 200 is stronger.

Referring to fig. 2 and 7, in an embodiment of the present application, the battery pack further includes a longitudinal beam 220, wherein the longitudinal beam 220 is uniformly disposed on the base plate 200, and the longitudinal beam 220 is engaged with the upper surface of the base plate 200.

In a specific embodiment of the present application, the upper surface of the bottom plate 200 is provided with a clamping portion 210, and the clamping portion 210 is clamped with the longitudinal beam 220. Specifically, the lower part of the vertical and horizontal beam is provided with a clamping groove 221, and the size of the clamping groove 221 is matched with the size of the clamping part 210, so that the vertical and horizontal beam 220 can be clamped with the clamping part 210 on the upper surface of the bottom plate 200 through the clamping groove 221, and the assembly of the vertical and horizontal beam 220 and the bottom plate 200 is realized. Meanwhile, the specific arrangement mode of the clamping portion 210 is not limited, and any clamping structure form capable of meeting or realizing the clamping purpose, such as a T-shaped structure, an inverted triangle structure, an arc structure, a trapezoid structure, and other mortise and tenon structures, can be used as the arrangement structure of the clamping portion 210 for realizing the longitudinal beam 220 and the bottom plate 200 in the application.

It can be appreciated that the battery pack in this embodiment further includes the longitudinal beam 220, the longitudinal beam 220 passes through the joint portion 210 that bottom plate 200 upper surface set up and the bottom plate 200 looks joint, the longitudinal beam of setting can promote the intensity at casing middle part, through joint portion and joint groove, can make boundary beam and bottom plate carry out quick assembly connection, the design simple process of joint assembly simultaneously, welding procedure has been reduced, the assembly efficiency of battery pack casing has been greatly promoted, can realize the quick assembly of battery pack casing, save assembly time and human cost.

Further, in this embodiment, the vertical beam 220 may be raised or the vertical beam 220 may be provided with a fixing module, so as to improve the rigidity of the battery pack, and further enhance the bending resistance and safety performance of the battery pack housing.

Referring to fig. 2 to 3 and fig. 6, in one embodiment of the present application, the battery pack further includes a reinforcing layer disposed at the junction of the bottom plate 200 and the side sill 100, and the reinforcing layer is further disposed at the junction of the bottom plate 200 and the supporting portion 120.

The junction at boundary beam 100 and bottom plate 200 still is provided with the enhancement layer in this embodiment, through the setting of enhancement layer, when further reinforcing boundary beam 100 and bottom plate 200 assembly department's stability, can also prevent that the junction from being corroded by oxidation, extension casing's life. Meanwhile, the reinforcing layer can be selected from high-strength glue, such as silica gel, structural glue and the like, but is not limited to the glue, and can be selected by a person skilled in the art according to practical situations.

This application adopts the roof beam 100 and bilayer structure's that inboard is provided with supporting part 120 bottom plate 200 to through inserting bottom plate 200 establish in roof beam 100's the jack-in groove 110, the mode of reuse connecting piece 130 and welding bead carries out fastening assembly, consolidates the assembly department through the enhancement layer at last, the application has put forward simultaneously and set up joint portion 210 at bottom plate 200's upper surface, sets up the longitudinal and transverse beam 220 simultaneously and adapts with it, is fixed in longitudinal and transverse beam 220 through the joint on joint portion 210, through the setting of multiple assembly modes and longitudinal and transverse beam 220, strengthen the bending resistance of roof beam 100 and the intensity of bottom plate 200, thereby promote battery package holistic rigidity, can effectively bump the risk to the side column.

In another preferred embodiment based on the above examples, the present embodiment provides a power device including the battery pack provided in the above examples. In particular, the battery packs of the above embodiments are installed within the power plant to provide better protection for the power plant from internal cells or cell modules. By adopting the battery pack, the power device can greatly improve the overall rigidity of the shell of the battery pack, can effectively prevent the battery pack from deforming after being extruded, and effectively cope with the risk brought by the battery pack after being extruded.

Specifically, the power device may be a vehicle, a train, an aircraft, a ship, or the like.

Specifically, the power device of the present embodiment can achieve the same beneficial effects as the battery pack of the above embodiment by adopting the battery pack of the above embodiment, and will not be described herein.

Those of ordinary skill in the art will appreciate that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. A battery pack, comprising:

a housing;

the housing includes:

the side beam is provided with a supporting part on the inner side surface;

the bottom plate is of a double-layer structure, and two ends of the bottom plate are respectively connected with one side beam.

2. The battery pack of claim 1, wherein the battery pack comprises a plurality of battery cells,

the lower part of the side beam is provided with a splicing groove, and the end part of the bottom plate is inserted into the splicing groove.

3. The battery pack of claim 2, wherein the battery pack comprises a plurality of battery cells,

the lower part of the boundary beam is also provided with a connecting hole, the connecting hole is oppositely arranged at the upper side and the lower side of the inserting groove, and the connecting hole penetrates through the inserting groove.

4. The battery pack of claim 3, wherein the battery pack comprises a plurality of battery cells,

and a connecting piece is arranged in the connecting hole in a penetrating way and used for connecting the bottom plate with the side beam.

5. The battery pack of claim 2, wherein the battery pack comprises a plurality of battery cells,

the lower surface of the supporting part and the inner top surface of the inserting groove are in the same plane, so that the upper surface of the bottom plate is contacted with the lower surface of the supporting part after the end part of the bottom plate is inserted into the inserting groove.

6. The battery pack of claim 1, further comprising:

the longitudinal beams are uniformly arranged on the bottom plate, and the longitudinal beams and the transverse beams are clamped with the upper surface of the bottom plate.

7. The battery pack of claim 6, wherein the battery pack comprises a plurality of battery cells,

the upper surface of bottom plate is provided with joint portion, joint portion with vertically and horizontally Liang Xiangka connects.

8. The battery pack according to any one of claims 1 to 7, wherein,

the thickness of the two end parts of the bottom plate is smaller than that of the middle part of the bottom plate.

9. The battery pack according to any one of claims 1 to 7, further comprising:

the reinforcing layer is arranged at the joint of the bottom plate and the boundary beam, and the reinforcing layer is also arranged at the joint of the bottom plate and the supporting part.

10. A power plant comprising a battery pack according to any one of claims 1-9.

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