CN217361754U - High integrated battery package buffer structure of car and car - Google Patents

Abstract

A highly integrated battery pack buffer structure of an automobile and the automobile comprise a battery pack shell and a battery pack arranged in the battery pack shell, wherein the battery pack comprises a battery cell unit and a battery cell cooling plate; the battery shell comprises an upper shell, a lower shell and side shells; the outer surface of the upper shell is a plane, the upper shell is connected with the vehicle body doorsills on the left side and the right side, and the lower shell is parallel to the upper shell; a battery pack buffer block is arranged between the battery pack and the side shell, and a control pipeline is arranged outside the battery pack shell and above the battery pack buffer block; the outer side of the side shell includes a connecting portion that is fixed to the vehicle body sill. The utility model provides a highly integrated's battery package scheme can realize the collision safety protection of self, combines the safety structure of automobile body, can support the battery package of platform motorcycle type and the integrated development of modularization of parts such as automobile body threshold, and the development change of the different motorcycle type parts of same platform is few, the cycle is short, realizes the quick iteration of platform motorcycle type.

Description

High integrated battery package buffer structure of car and car

Technical Field

The utility model relates to a battery structure and new forms of energy car of new forms of energy car, more specifically say, relate to a high integrated battery package buffer structure of car and car.

Background

Along with the promotion of electric automobile sales volume and the quick development of technique, development is applicable to pure electric vehicles's intelligent automobile framework platform and has come up to now, and pure electric vehicles platform needs to satisfy the high expansibility of bandwidth, the fast ization of framework module, interface universalization to satisfy the short development cycle of motorcycle type, low development cost, product diversity and the demand of quick iteration.

Different from a fuel-powered automobile structure, the core difficulty of a pure electric automobile structure is the structure design and matching development of a three-electric system, and the battery design therein is the first place. The battery pack has very high requirements on the aspects of arrangement space, safety requirements, manufacturing strategies and the like, so that the modularization and integration design aiming at the battery pack is important for the success or failure of the development of a pure electric vehicle architecture platform.

The main stream battery pack scheme of the current vehicle type is integrated in a module or a battery pack for a battery core, the collision safety protection performance of the battery pack self battery core is poor, the vehicle body structure is required to be forced to be large, the safety performance of different vehicle types is different, the problems of more vehicle body structure change, long period and high cost exist in the design, and the development risk is large.

As shown in fig. 5, there are still some frame chassis with integrated battery packs in the prior art.

Referring to fig. 5, the structure of the prior art is that a battery box frame 52 is arranged in a battery box shell 53, the battery box shell 53 is a sealed cuboid structure, and the battery box frame 52 is a frame structure and is nested in the battery box shell 53. The battery module 51 is a plurality of cell units, and is arranged in the battery box frame 52 in a certain manner. In order to achieve sealing, a gasket and a cover are provided on the battery case frame 52.

However, the existing battery box housing 53 structure is not provided with a buffer structure, the buffer structure is usually required to be additionally arranged, and the combination of the battery box housing 53 and the vehicle frame is realized through an additional component. In addition, the cover of the conventional battery case 53 is a thin plate, and cannot be used as another structure at the same time.

SUMMERY OF THE UTILITY MODEL

Poor, the many problems of structural constraint of battery package self safety protection ability to prior art exists, the utility model provides a high integrated battery package buffer structure of car and car can solve the safety protection problem of battery package at least to and increase battery package structural strength.

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

the utility model provides a high integrated battery package buffer structure of car, includes battery package casing and installs the group battery in battery package casing, and wherein, the group battery includes electric core unit and electric core cooling plate, and battery package casing includes casing, lower casing and side casing. The outer surface of the upper shell is a plane, the upper shell is connected with the vehicle body doorsills on the left side and the right side, and the lower shell is parallel to the upper shell. A battery pack buffer block is arranged between the battery pack and the side shell, and a control pipeline is arranged outside the battery pack shell and above the battery pack buffer block. The outer side of the side shell includes a connecting portion that is fixed to the vehicle body sill.

As an embodiment of the present invention, the cross-section of the upper end and the lower end of the electric core cooling plate is trapezoidal.

As an embodiment of the present invention, the inner surface of the lower casing includes a plurality of grooves, and the battery core cooling plate is positioned in the grooves.

As an embodiment of the utility model, the surface of going up the casing both sides, the region that is located the control line side set up sealed faying face, and the surface of automobile body threshold and last casing is connected to sealed faying face.

As an embodiment of the utility model, it is sealed through sealed pad or sealed glue between sealed faying face and the last casing, sealed faying face and automobile body threshold welding or integrated into one piece.

As an embodiment of the present invention, the front end and the rear end of the battery pack case are connected to the front cross member and the rear cross member of the vehicle, respectively, and the upper case is a porous structure support plate.

As an embodiment of the present invention, the length of the electric core cooling plate is slightly greater than the length of the electric core unit, so that the upper end of the electric core cooling plate is embedded into the upper casing, and the lower end of the electric core cooling plate is embedded into the lower casing.

As an embodiment of the present invention, the control pipeline includes a high-pressure wire harness, a water pipe, and a brake pipe; the battery pack buffer block comprises extruded aluminum.

In order to achieve the above object, the utility model discloses still adopt following technical scheme:

an automobile, this car includes the utility model discloses a battery package buffer structure.

As an embodiment of the utility model, the automobile body threshold is hollow structure, sets up the threshold buffer block in the automobile body threshold.

As an embodiment of the utility model, the threshold buffer block is extruded aluminium, and the threshold buffer block is located the top of connecting portion.

In the technical scheme, the utility model provides a highly integrated battery package scheme can realize the collision safety protection of self, combines the safety structure of automobile body, can support the battery package of platform motorcycle type and the integrated development of modularization of parts such as automobile body threshold, and the different motorcycle type part development of same platform change is few, the cycle is short, realizes the quick iteration of platform motorcycle type.

Drawings

Fig. 1 is a schematic structural view of a highly integrated battery pack buffer structure of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

fig. 3 is a schematic view of the structure of a battery pack;

fig. 4 is a schematic view of the connection of the cell cooling plate and the lower case;

fig. 5 is a schematic view of a prior art frame chassis of an integrated battery pack.

In the figure:

10-battery pack, 11-cell unit, 12-cell cooling plate, 13-groove;

20-battery pack case, 21-upper case, 22-lower case, 23-side case, 24-connecting part;

30-a control line;

40-a vehicle body threshold, 41-a sealing faying surface and 42-a threshold buffer block;

50-middle chassis, 51-battery module, 52-battery box frame, 53-battery box shell and 54-connecting beam.

Detailed Description

The technical solution in the embodiments of the present invention will be further clearly and completely described below with reference to the accompanying drawings and embodiments. It is obvious that the described embodiments are used for explaining the technical solution of the present invention, and are not meant to exhaust all embodiments of the present invention.

Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

Referring to fig. 1, the present invention firstly discloses a highly integrated battery pack buffer structure for a vehicle, which mainly comprises two main components, namely a battery pack case 20, and a battery pack 10 installed in the battery pack case 20. As shown in fig. 1 and 3, the battery pack case 20 and the battery pack 10 thereof have a rectangular parallelepiped structure, and the cross section of the battery pack case 20 is a regular rectangle.

The battery pack case 20 and the battery pack 10 thereof shown in fig. 1 are illustrated in an external overall structure in a middle region and in a perspective structure at both sides to show the internal structure of the battery pack case 20. The details of this perspective structure are shown in fig. 2.

Referring to fig. 1 and 2, the battery pack case 20 includes an upper case 21, a lower case 22, and side cases 23, and the battery pack 10 is located at the central region of the battery pack case 20 with upper and lower sides contacting the upper and lower cases 21 and 22, respectively, while leaving a certain space between the sides of the battery pack 10 and the side cases 23.

As an embodiment of the present invention, the battery pack case 20 of the present invention is designed to be made of aluminum, including extruded aluminum and aluminum profiles, and has light weight and high rigidity. In addition, the upper and lower cases 21 and 22 are designed as aluminum profiles having a certain thickness, have good dimensional stability, and can provide effective support and transfer energy in a collision.

With continued reference to fig. 1 and 2, an important point of the present invention is to provide a battery pack buffer block between the battery pack 10 and the side casing 23. Specifically, the battery pack case 20 is provided with battery pack buffers on both inner sides in the length direction, that is, the battery pack buffers are embedded in a space left between the side of the battery pack 10 and the side case 23 in the length direction of the battery pack case 20. The position of the battery pack buffer block enables the battery pack buffer block to deform and absorb energy during side collision and transmit energy during frontal collision.

As an embodiment of the utility model, the battery package buffer block is high energy-absorbing extruded aluminum. Those skilled in the art will appreciate that the use of extruded aluminum as the buffer block for the battery pack is only one of many embodiments of the present invention, and is not a limitation of the present invention.

As shown in fig. 1 and 2, the outside of the side shell 23 includes a connecting portion 24, and the connecting portion 24 is fixed to the side sill 40. As a preferred embodiment of the present invention, the battery pack case 20 is connected to the vehicle body sill 40 by a bolt, so that the battery pack case 20 is directly fixed to the vehicle body.

The battery pack case 20 and the battery pack 10 inside the battery pack case can be directly fixed to the vehicle body sill 40 through the connecting portion 24 on the outer side of the side case 23 in such a manner that the battery pack case 20 (and the battery pack 10) do not need to be additionally connected to the vehicle body. On the other hand, since the pack case 20 already includes the pack cushion block therein, no other cushion structure is required between the pack case 20 (and the battery pack 10) and the vehicle body.

The utility model discloses with the battery package buffer block integration in battery package casing 20's inside to connecting portion 24 also are battery package casing 20 side integrated into one piece's part, therefore battery package casing 20 is taken with connecting portion 24, can form the wholeness "integration" part of direct mount.

In contrast, the conventional battery pack case 20 (and the battery pack 10) and the vehicle body need a complicated and bulky connection structure because they are not integrally formed, and the buffer structure between the battery pack case 20 (and the battery pack 10) and the vehicle body needs a large space because they are not integrally formed.

Through the test, based on the utility model discloses a battery package buffer structure, battery package casing 20 (and group battery 10) can obtain bigger electric core unit 11 and arrange the space (use the locomotive dead ahead to be X axle direction, the utility model discloses can make Y to increase about 80~100mm, Z is to increasing about 10 mm), can improve the energy capacity of battery.

It can be seen that, the utility model discloses an "integrate" battery package casing 20's structure can provide bigger group battery 10 space, can support whole car to arrange and provide bigger electric core unit 11 and arrange the space, improves the quantity of the inside electric core unit 11 of group battery 10, and then promotes battery capacity, can effectively solve the not enough problem of continuation of the journey of current pure electric vehicle ubiquitous. Or, under the prerequisite that group battery 10 space size is the same, combine the utility model discloses battery pack housing 20's structure can realize lower whole car weight, can effectively promote whole car continuation of the journey, promotes the motorcycle type competitiveness.

With continued reference to fig. 1 and 2, the front and rear ends of the battery pack case 20 are connected to the front and rear cross members of the vehicle, respectively. The utility model discloses with the front end of battery package casing 20 fixed to the front portion crossbeam of vehicle, with the rear end of battery package casing 20 fixed to the rear portion crossbeam of vehicle, the side of battery package casing 20 still is connected with automobile body threshold 40 simultaneously. Thus, the utility model discloses a vehicle can not have traditional automobile body floor structure, and battery package casing 20 is in addition to parcel group battery 10, and casing 21 plays the bearing effect on "traditional automobile body floor" simultaneously on it.

As an embodiment of the present invention, the upper housing 21 is a porous support plate, and the porous support plate can be used as a support structure to support interior parts such as seats, and also can support the battery pack 10 to buffer the battery pack 10.

The prior art battery pack case 20 (particularly, the upper case 21 thereof) cannot be directly used as a vehicle body floor because the battery pack case 20 is not directly connected to the front cross member, the rear cross member, and the side sills 40 of the vehicle at the same time, and thus the supporting force to which the battery pack case 20 is subjected is insufficient, so that the upper case 21 cannot be directly used as a vehicle body floor.

Continuing with fig. 1 and 2, control lines 30 are provided on the exterior of the package housing 20 at a location above the package buffer blocks. As an embodiment of the present invention, the control pipeline 30 includes a high-pressure wire harness, a water pipe, a brake pipe, and the like.

In the prior art, the auxiliary connection part 24 of the battery pack shell 20 occupies a large space, so the control pipeline 30 is intelligently arranged in the floor of the vehicle body, which causes the unevenness of the floor of the vehicle body, and especially a special raised channel bulge is needed in the floor to arrange the control pipeline 30.

And in the utility model discloses in, because control line 30 is located the top of battery package buffer block, as shown in fig. 1 and fig. 2, be located the clearance of automobile body threshold 40 and battery package casing 20, high-pressure pencil, water pipe and brake piping arrange in the battery package both sides promptly, and be located the side of whole automobile body.

Due to the structure, the outer surface of the upper shell 21 (i.e. the upper surface of the upper shell 21) shown in fig. 1 and 2 is substantially a complete plane, and the upper shell 21 is connected with the vehicle body door sills 40 on the left and right sides, which are also used as the vehicle body floor, so that the structure can realize a pure flat floor (the upper shell 21) design, support the floor no-center-channel bulge design, and be more beneficial to the development of multiple scenes of the passenger compartment.

As shown in fig. 1 and 2, the outer surfaces of both sides of the upper case 21, in the areas located on the sides of the control lines 30, are provided with seal lands 41, and the seal lands 41 connect the vehicle body side sills 40 and the outer surface of the upper case 21. The sealing land 41 functions to shield the area where the control lines 30 such as high-pressure wire harnesses, water pipes, and brake pipes are located, so that the outer surface of the upper case 21 and the side sill 40 are integrated.

In order to seal the outer surface of the upper shell 21 and the vehicle body threshold 40, as a preferred embodiment of the present invention, the sealing joint surface 41 and the upper shell 21 are sealed by a sealing gasket or a sealant, and the sealing joint surface 41 and the vehicle body threshold 40 are welded or integrally formed. By these means, a passenger compartment seal can be achieved.

It will be understood by those skilled in the art that the above-described sealing means is only one of many embodiments of the present invention, and is not a limitation of the present invention. In other embodiments of the present invention, the sealing joint surface 41 and the upper shell 21, the car body threshold 40 can be sealed by other methods, which all fall within the protection scope of the present invention.

With continued reference to fig. 1 and 2, the body sill 40 of the present invention is a hollow structure, and a sill cushion 42 is disposed in the body sill 40. As an embodiment of the present invention, the threshold buffer block 42 is extruded aluminum, and the threshold buffer block 42 is located above the connecting portion 24.

As can be seen from fig. 1 and 2, the threshold buffer block 42 of the present invention is disposed at a position slightly higher than the battery pack case 20, and the connecting position of the connecting portion 24 and the vehicle body threshold 40 is below the threshold buffer block 42. The threshold bumper 42 and the battery pack bumper are disposed at different levels, i.e., the threshold bumper 42 and the battery pack bumper provide a more complete bumper when viewed from the side of the vehicle body. In addition, since the connecting position of the connecting portion 24 and the vehicle body side sill 40 is located between the side sill cushion 42 and the battery pack cushion, although not on a horizontal plane, it constitutes a connecting structure of cushion (side sill cushion 42) -rigid (connecting portion 24) -cushion (battery pack cushion), and has a more desirable cushion effect.

On the other hand, extruded aluminum is arranged in the vehicle body threshold 40, so that the rigidity of the threshold is improved, the threshold can deform and absorb energy in side impact and can transmit energy in frontal impact, high-pressure wire harnesses, water pipes, brake pipelines and the like are effectively protected, and meanwhile, the safety protection performance of the battery pack shell 20 is improved.

Referring to fig. 3 and 4, the battery pack 10 includes a cell unit 11 and a cell cooling plate 12. The length of the cell cooling plate 12 is slightly greater than the length of the cell unit 11, so that the upper end of the cell cooling plate 12 is embedded in the upper case 21, and the lower end of the cell cooling plate 12 is embedded in the lower case 22. In this way, the battery pack 10 and the upper and lower cases 21 and 22 of the battery pack case 20 can be tightly coupled to each other.

As shown in fig. 3, the utility model discloses a linear type electric core cooling plate 12 can effectively reduce the flow resistance, promotes cooling efficiency, and electric core cooling plate 12 is single play in and out for integral, has guaranteed the stability and the cooling effect of coolant liquid flow direction.

With continued reference to fig. 3 and 4, as an embodiment of the present invention, the cross-section of the upper end and the lower end of the cell cooling plate 12 is trapezoidal. Meanwhile, the inner surface of the lower case 22 includes a plurality of grooves 13, and the cell cooling plates 12 are positioned in the grooves 13. The cross section of the matching groove of the battery core cooling plate 12 and the upper and lower shells 21 and 22 is designed to be trapezoidal, so that positioning can be realized, and dimensional tolerance can be absorbed.

As an embodiment of the present invention, the battery pack 10 is a linear type, and a row of electric core cooling plate 12 is disposed between every two rows of electric core units 11. The utility model provides an "integrate" electric core cooling plate 12 among battery package casing 20 except cooling or heating electric core unit 11, can also play certain supporting role to last casing 21, promote battery package casing 20's the bulk rigidity and go up casing 21's the function of bearing. The cell cooling plates 12 are arranged in the grooves 13 of the lower case 22 of the battery pack along the length direction of the battery pack 10, and are connected with the upper case 21 and the grooves 13 in a positioning manner through buffer layers.

It can be seen that, in order for the battery pack case 20 to function as a "conventional vehicle body floor" at the same time, at least the following conditions are required:

1. the battery pack case 20 is fixed to the front, rear, and side surfaces of the vehicle frame (i.e., the battery pack case 20 is fixed around the periphery) by a direct connection. Otherwise, the supporting force of the battery pack case 20 is insufficient to achieve the condition as the floor of the vehicle body. In the present invention, the battery pack case is directly fixed to the body sill 40 through the connecting portion 24, and the front end and the rear end of the battery pack case 20 are connected to the front cross member and the rear cross member of the vehicle, respectively;

2. the upper case 21 of the battery pack case 20 needs to have a specific structure so that the upper case 21 has both buffering and supporting functions, thereby having both strength and buffering functions. Otherwise, the strength of the battery pack case is insufficient to support other vehicle body components, and the vibration of the other vehicle body components may damage the cell units 11 inside the battery pack case 20. In the utility model, the upper shell 21 adopts a porous supporting structure, so as to meet the corresponding technical requirements;

3. the middle region of the upper case 21 requires a certain strength support, otherwise the central portion of the upper case 21 "collapses" if the above condition 1 (i.e., the battery pack case 20 is fixed all around) is satisfied. In order to prevent the middle part of the upper casing 21 from collapsing, in the present invention, the specific structure of the cell cooling plate 12 makes it play a certain role of supporting the upper casing 21, although the supporting force of each cell cooling plate 12 is limited, as shown in fig. 3 of the present invention, a plurality of cell cooling plates 12 arranged longitudinally in parallel are provided in the battery pack casing 20, so that the overall supporting force is enhanced;

4. the upper case 21 of the battery pack case 20 needs to have sufficient flatness or otherwise the mounting position of other vehicle body components is restricted. In order to make the outer surface (upper surface) of the upper case 21 a large plane so that other vehicle body components can be carried on the upper case 21, the utility model discloses arrange the control line 30 in the side of the upper case 21, in being located the vehicle body threshold 40, with this flatness of the upper case 21 has been guaranteed.

As can be seen from comparison of fig. 1, 2 and 5, the battery box housing 53 shown in fig. 5 is disposed in the middle chassis section 50, and it still requires a plurality of connecting beams 54 to be laid on both sides and the middle of the battery box housing 53, and the battery box housing 53 is stably connected by the plurality of connecting beams 54.

By contrast, the prior art arrangement does not allow direct connection of the battery box housing 53 to the vehicle door sill, i.e. it is not fixed laterally, or at least not directly, and requires at least additional auxiliary fixing arrangements for connecting the battery box housing 53 to the door sill. On the other hand, since the lid of the battery box case 53 is not designed in particular, the structure of the battery box case 53 cannot be used as a vehicle floor (floor panel) at the same time, and thus the vehicle of the related art requires a separate vehicle floor (floor panel).

Present electricelectric motor car ubiquitous weight problem on the verge, and compare with prior art, the utility model discloses a battery package casing 20 structure has high strength and rigidity, supports automobile body cancellation floor. The upper battery shell 21 integrates the function of a vehicle body floor, cancels the traditional vehicle body floor and supports the weight reduction of the whole vehicle. Meanwhile, when the battery pack shell is designed to be all-aluminum, the weight of the battery pack shell is light, and the weight of the whole vehicle can be further reduced.

As another aspect of the utility model, the utility model discloses still disclose a car, its adoption the utility model discloses foretell battery package buffer structure, no longer give unnecessary details here.

To sum up, the utility model discloses following beneficial effect has at least:

1. the utility model provides a highly integrated battery pack buffer structure, which can support the rapid iterative development of platform vehicle types and simultaneously reduce the overall design development cost and product verification cost of the platform vehicle types;

2. the utility model provides an integrated battery package buffer structure has higher self safety protection performance, and effectively supports parts such as a vehicle body threshold and the like to carry out lightweight, miniaturization and low-cost design;

3. the utility model provides an integrate battery package buffer structure, its function that has integrated traditional automobile body floor has bigger whole car electric core and arranges the space, and battery package buffer structure self safety scheme combines automobile body safety design, realizes whole car modularization safety protection.

It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as limitations of the present invention, and that changes and modifications to the above described embodiments will fall within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.

Claims (11)

1. The utility model provides a high integrated battery package buffer structure of car, includes battery package casing and installs the group battery in battery package casing, its characterized in that:

the battery pack comprises a battery cell unit and a battery cell cooling plate;

the battery pack shell comprises an upper shell, a lower shell and side shells;

the outer surface of the upper shell is a plane, the upper shell is connected with the vehicle body doorsills on the left side and the right side, and the lower shell is parallel to the upper shell;

a battery pack buffer block is arranged between the battery pack and the side shell, and a control pipeline is arranged outside the battery pack shell and above the battery pack buffer block;

the outer side of the side shell includes a connecting portion that is fixed to the body sill.

2. The automotive highly-integrated battery pack buffer structure of claim 1, wherein the cross sections of the upper end and the lower end of the cell cooling plate are both trapezoidal.

3. The automotive highly integrated battery pack cushioning structure of claim 2, wherein the inner surface of said lower housing includes a plurality of grooves in which said cell cooling plates are positioned.

4. The buffering structure for highly integrated battery packs of automobiles according to claim 1, wherein the outer surfaces of both sides of the upper case, in the region located at the side of the control line, are provided with sealing overlapping surfaces which connect the body door sill and the outer surface of the upper case.

5. The automotive highly-integrated battery pack buffer structure as claimed in claim 4, wherein the sealing joint face and the upper shell are sealed by a sealing gasket or sealant, and the sealing joint face and the car body door sill are welded or integrally formed.

6. The automotive highly-integrated battery pack buffering structure according to claim 1, wherein the front end and the rear end of the battery pack case are respectively connected to a front cross member and a rear cross member of a vehicle, and the upper case is a porous structure support plate.

7. The automotive highly-integrated battery pack buffering structure of claim 2, wherein the length of the cell cooling plate is slightly greater than that of the cell unit, so that the upper end of the cell cooling plate is embedded in the upper casing and the lower end of the cell cooling plate is embedded in the lower casing.

8. The automotive highly-integrated battery pack buffer structure according to claim 1, characterized in that:

the control pipeline comprises a high-pressure wire harness, a water pipe and a brake pipeline;

the battery pack buffer block comprises extruded aluminum.

9. An automobile, characterized in that the automobile comprises a highly integrated battery pack buffer structure according to any one of claims 1 to 8.

10. The vehicle of claim 9 wherein said body sill is a hollow structure and a sill cushion is disposed within said body sill.

11. The vehicle of claim 10, wherein the rocker bumper is extruded aluminum and the rocker bumper is positioned above the connecting portion.

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