CN213799299U

CN213799299U - Battery pack and vehicle

Info

Publication number: CN213799299U
Application number: CN202022196772.0U
Authority: CN
Inventors: 孙艳; 赵立志; 任飞; 田旭光
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-07-27
Anticipated expiration: 2030-09-29

Abstract

The utility model discloses a battery package and vehicle, battery package includes: the battery module comprises a shell, a battery module and a floating plate assembly, wherein an accommodating cavity is formed in the shell; the battery module is arranged in the accommodating cavity; the floating plate assembly is disposed between the bottom wall of the receiving cavity and the battery module and at a lower side of the battery module, and includes: the floating plate comprises a floating plate body, at least part of the floating plate body is constructed to be a hard layer structure, and the floating plate assembly and the bottom wall are arranged at intervals to form a buffer gap. According to the utility model discloses a battery package, this battery package are provided with the floating plate subassembly, and the floating plate subassembly sets up in order to form the buffer space with the diapire interval, and the buffer space has improved the deformation space for the deformation of bottom plate, has reduced the collision impact that the bottom plate transmitted to the floating plate subassembly, has protected the battery module effectively, has improved the reliability of battery package.

Description

Battery pack and vehicle

Technical Field

The utility model belongs to the technical field of the vehicle and specifically relates to a battery package and vehicle are related to.

Background

In the correlation technique, when the vehicle in-process was run and is met the barrier in the bottom, the collision impact can be transmitted the diapire that the battery wrapped, makes the diapire of battery package take place towards the deformation of battery pack direction, and the collision impact concentrates on battery pack's contact position, has led to causing battery pack to be damaged because of a certain point collision impact is too big on the battery pack, has increased the damaged risk of battery pack in the collision process.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the present invention is to provide a battery pack. This battery package is provided with the floating plate subassembly, and the floating plate subassembly sets up in order to form the buffering space with the diapire interval, and the buffering space has improved the deformation space for the deformation of bottom plate, has reduced the collision impact that the bottom plate transmitted to the floating plate subassembly, has protected the battery module effectively, has improved the reliability of battery package.

The utility model also provides a vehicle of having above-mentioned battery package.

According to the utility model discloses a battery package includes: the battery module comprises a shell, a battery module and a floating plate assembly, wherein an accommodating cavity is formed in the shell; the battery module is arranged in the accommodating cavity; the floating plate assembly is disposed between the bottom wall of the receiving cavity and the battery module and at a lower side of the battery module, and includes: the floating plate comprises a floating plate body, at least part of the floating plate body is constructed to be a hard layer structure, and the floating plate assembly and the bottom wall are arranged at intervals to form a buffer gap.

According to the utility model discloses a battery package, this battery package is through setting up floating plate subassembly and diapire interval to make and form the buffering clearance between floating plate subassembly and the diapire, the buffering clearance provides the deformation space for the deformation of diapire, has reduced the collision impact of transmitting to on the floating plate subassembly effectively, has protected the battery module more effectively, has improved the reliability of battery package.

According to an embodiment of the present invention, the distance between the lower surface of the floating plate assembly and the bottom wall is a1, the distance between the bottom wall and the lower surface of the battery module is a2, and a1/a2 satisfies: a1/a2 is more than 0 and less than or equal to 0.8.

According to the utility model discloses an embodiment, the battery module includes: the water-cooling board, the water-cooling board form in the lower surface of battery module, be formed with the runner in the water-cooling board, adjacent two be provided with between the runner and be suitable for holding the groove is dodged to the runner of unsteady board subassembly, the width that the groove was dodged to the runner is b1, the width of unsteady board subassembly is b2 b1/b2 satisfies the relational expression: b2/b1 is more than or equal to 0.5 and less than or equal to 1.

According to the utility model discloses an embodiment, the height of runner is c1, the thickness of floating plate subassembly is c2, and c1/c2 satisfies the relational expression: c2/c1 is more than or equal to 1 and less than or equal to 5.

According to the utility model discloses an embodiment, the casing includes: the upper surface of the bottom plate is configured as the bottom wall of the accommodating cavity, and a buffer cavity is formed in the bottom plate.

According to the utility model discloses an embodiment, the bottom plate includes upper plate and the lower plate that sets up at an interval each other, the upper plate with be formed with between the lower plate the cushion chamber.

According to the utility model discloses an embodiment, the lower surface of upper plate and/or the upper surface of lower plate is provided with the strengthening rib.

According to the utility model discloses an embodiment, the both ends of strengthening rib respectively with the lower surface of upper plate with the upper surface of lower plywood links to each other.

According to the utility model discloses an embodiment, the strengthening rib set up in the upper surface of lower plywood, the size of strengthening rib cross section reduces gradually in the direction from bottom to top.

The vehicle according to the present invention is briefly described below.

According to the utility model discloses a be provided with the battery package of above-mentioned embodiment on the vehicle, because according to the utility model discloses a be provided with the battery package of above-mentioned embodiment on the vehicle, this battery package can protect the battery module effectively, has reduced the impaired risk of battery module effectively, has improved the reliability of battery package to improve vehicle reliability, reduced the impaired risk of battery package in the collision of vehicle.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a bottom view of a battery pack according to an embodiment of the present invention;

fig. 2 is a top view of a battery pack according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of section A-A of FIG. 2;

FIG. 4 is an enlarged partial view of circle B in FIG. 3;

fig. 5 is a cross-sectional view of a battery pack according to an embodiment of the present invention;

fig. 6 is a partially enlarged view of circle E in fig. 5.

Fig. 7 is a top view of a floating plate assembly according to another embodiment of the present invention;

FIG. 8 is a cross-sectional view of section C-C of FIG. 7;

fig. 9 is a schematic structural view of a floating plate body according to an embodiment of the present invention;

fig. 10 is a schematic structural view of a floating plate assembly according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a battery pack according to an embodiment of the present invention.

The battery pack 1 is provided with a battery pack,

the floating plate assembly 11, the floating plate body 111,

a battery module 12, a water-cooling plate 13, a flow channel 131, a flow channel avoiding groove 132,

the upper plate 141, the lower plate 142, the buffer cavity 143, the reinforcing rib 144, the bottom wall 101 and the buffer gap 102.

Detailed Description

Reference will now be made in detail to 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 only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

A battery pack 1 according to an embodiment of the present invention is described below with reference to fig. 1 to 11.

The battery pack 1 comprises a shell, a battery module 12 and a floating plate component 11, wherein a containing cavity is formed in the shell; the battery module 12 is arranged in the accommodating cavity; the floating plate assembly 11 is disposed between the bottom wall 101 of the receiving cavity and the battery module 12 and at a lower side of the battery module 12, and the floating plate assembly 11 includes: the floating plate body 111, at least part of the floating plate body 111 is constructed to be a hard layer structure, and the floating plate assembly 11 is arranged at a distance from the bottom wall 101 to form a buffer gap 102. The battery module 12 is accommodated in the accommodating cavity of the case to protect the battery module 12 by the case.

Further, a floating plate assembly 11 is arranged between the bottom wall 101 and the battery module 12, the battery pack 1 is generally arranged at the bottom of the vehicle, when the bottom of the vehicle collides with an obstacle, the lower surface of the housing contacts with the obstacle and deforms, and meanwhile, the floating plate assembly 11 is suitable for moving towards the battery module 12 along with the lower side plate of the housing when the lower side plate of the housing deforms towards the battery module 12, so that the floating plate assembly 11 can contact with the battery module 12 to transmit impact generated by deformation of the lower side plate of the housing to the battery module 12; wherein, the area of contact of floating plate subassembly 11 and battery module 12 is greater than the lower side plate deformation position of casing and battery module 12's area of contact, floating plate subassembly 11 can disperse the impact force that is transmitted to battery module 12 by the lower side plate of casing, has avoided the concentration of collision impact force effectively, and then has reduced the impaired risk of internals of battery module 12, makes the impact force can disperse the lower surface at battery module 12 better, avoids the impact force too concentrated.

Furthermore, the floating plate assembly 11 and the bottom wall 101 are arranged at intervals to form a buffer gap 102, the buffer gap 102 provides a deformation space for deformation of the lower side plate of the shell, the floating plate assembly 11 can be triggered to protect the battery module 12 only when the lower side plate variable of the shell is large enough, and the lower side plate of the shell absorbs part of collision impact in the deformation process, so that the floating plate assembly 11 and the bottom wall 101 are arranged at intervals, the bottom wall 101 and the battery module 12 are isolated from each other, the collision impact transmitted to the battery module 12 by the floating plate assembly 11 is avoided, and the battery module 12 can be better protected.

According to the utility model discloses a battery package 1, this battery package 1 is through setting up floating plate subassembly 11 and diapire 101 interval to make and form buffering clearance 102 between floating plate subassembly 11 and the diapire 101, buffering clearance 102 provides the deformation space for the deformation of the lower plate of casing, has reduced the collision impact of transmission to on the floating plate subassembly 11 effectively, has protected battery module 12 more effectively, has improved battery package 1's reliability.

According to an embodiment of the present invention, the distance between the lower surface of the floating plate assembly 11 and the bottom wall 101 is a1, the distance between the bottom wall 101 and the lower surface of the battery module 12 is a2, and a1/a2 satisfies: a1/a2 is more than 0 and less than or equal to 0.8. The upper surface of the floating plate assembly 11 is adapted to be adhesively fixed with the lower surface of the battery module 12 by means of the third adhesive layer, i.e., a1 represents the height of the above-mentioned buffering space 102, a2 represents the thickness of the floating plate assembly 11, the sum of the height of the buffering space 102 and the thickness of the surface floating plate assembly 11 is the distance from the lower surface of the battery module 12 to the bottom wall 101, and the ratio of the height of the buffering space 102 to the thickness of the surface floating plate assembly 11 is configured as follows: a1/a2 is more than 0 and less than or equal to 0.8, so that the size of the battery pack 1 in the thickness direction is not increased, the gap between the floating plate assembly 11 and the bottom wall 101 is ensured, a sufficient deformation space is provided for the deformation of the lower side plate of the shell, and the collision impact transmitted to the floating plate assembly 11 is effectively reduced.

According to the utility model discloses an embodiment, battery module 12 includes water-cooling board 13, and water-cooling board 13 is formed at battery module 12's lower surface, is formed with runner 131 in the water-cooling board 13, is provided with the runner that is suitable for holding floating plate subassembly 11 between two adjacent runners 131 and dodges groove 132, and the runner dodges the width in groove 132 and is b1, and the width of floating plate subassembly 11 is b2, and b1/b2 satisfies the relational expression: b2/b1 is more than or equal to 0.5 and less than or equal to 1.

The water cooling plate 13 is provided with a flow channel 131, a refrigerant is arranged in the flow channel 131, and the refrigerant flows in the flow channel 131 to take away heat generated by the battery module 12, so that the battery module 12 is cooled rapidly. A flow channel avoiding groove 132 is formed between two adjacent flow channels 131, the floating plate assembly 11 is accommodated in the flow channel avoiding groove 132, and the floating plate assembly 11 is accommodated in the flow channel avoiding groove 132 by arranging the flow channel avoiding groove 132, so that the floating plate assembly 11 and the flow channels 131 can be overlapped in the thickness direction, and the thickness of the battery pack 1 can be reduced.

Further, as shown in fig. 4, the width b2 of the floating plate assembly 11 is set to be not greater than the width b1 of the flow passage avoiding groove 132, so as to avoid interference with the groove wall of the flow passage avoiding groove 132 when the floating plate assembly 111 moves toward the water-cooling plate 13, so that the floating plate assembly 11 can uniformly transmit the impact of collision to the water-cooling plate 13, and in some embodiments, the flow passage avoiding groove 132 can accommodate at most two floating plate assemblies 11 in the width direction.

According to the utility model discloses an embodiment, set up the width b2 of floating plate subassembly 11 to equal the width b1 that the runner dodged groove 132, floating plate subassembly 11 can cover the runner completely on the width direction this moment and dodge groove 132, makes floating plate subassembly 11 can protect water-cooling board 13 at the optional position, has improved floating plate subassembly 11 to water-cooling board 13's protective effect. Wherein the width of the floating plate assembly 11 is greater than 5 mm.

As shown in the embodiment of fig. 4, the width b2 of the floating plate assembly 11 is slightly larger than the width b1 of the flow-path avoiding groove 132, and two sides of the flow-path avoiding groove 132 in the width direction are rounded to facilitate the processing of the flow path 131, and to make the floating plate assembly 11 completely fit the bottom wall of the flow-path avoiding groove 132.

As shown in fig. 4, according to an embodiment of the present invention, the height of the flow channel 131 is c1, the thickness of the floating plate assembly 11 is c2, and c1/c2 satisfies the following relation: c2/c1 is more than or equal to 1 and less than or equal to 5, the ratio of the height c1 of the flow channel 131 to the thickness c2 of the floating plate component 111 is more than or equal to 1 and less than or equal to c2/c1 and less than or equal to 5, so that the thickness of the floating plate component 11 is prevented from being too large, the floating plate component 11 slightly protrudes out of the lower surface of the water cooling plate 13, the flow channel 131 is prevented from contacting with the bottom wall of the bottom shell, and the flow channel 131 is effectively protected. When the ratio of the height c1 of the runner 131 to the thickness c2 of the floating plate assembly 11 is 1.6, the floating plate assembly 11 can effectively protect the runner 131 when the bottom of the housing bears the extrusion force of 25KN, and the runner 131 is prevented from being damaged.

According to the utility model discloses an embodiment, the casing includes the bottom plate, and the upper surface of bottom plate constructs for the diapire that holds the chamber, is formed with cushion chamber 143 in the bottom plate, and cushion chamber 143 sets up in the bottom plate in order to be used for the buffer floor to touch the impact, reduces the bottom plate and transmits the collision impact for floating plate subassembly 11 to reduced the collision impact that battery module 12 received at the collision in-process, protected battery module 12 effectively, improved the reliability of battery package 1.

As shown in fig. 5 and 6, according to an embodiment of the present invention, the bottom plate includes an upper plate 141 and a lower plate 142 spaced apart from each other, and a buffer chamber 143 is formed between the upper plate 141 and the lower plate 142. The upper plate 141 is provided at the upper side of the lower plate 142 and spaced apart to form the buffer chamber 143, and by providing the buffer chamber 143 between the upper plate 141 and the lower plate 142, the buffer chamber 143 can be made to effectively absorb the impact of the collision of the lower plate 142 to reduce the impact of the collision of the lower plate 142 transferred to the upper plate 141, thereby attenuating the impact of the collision of the bottom plate transferred to the floating plate assembly 11.

It should be noted that the base plate is not limited to the above embodiments, and the base plate may be configured as a multi-layer plate, and the buffer gap 102 is formed between two adjacent layers of the multi-layer plate.

According to an embodiment of the present invention, the lower surface of the upper plate 141 and/or the upper surface of the lower plate 142 are provided with reinforcing ribs 144. By arranging the reinforcing ribs 144, the structural strength of the bottom plate is effectively improved, the bottom plate is prevented from being broken when colliding, and the reliability of the bottom plate is improved.

According to an embodiment of the present invention, both ends of the reinforcing rib 144 are connected to the lower surface of the upper plate 141 and the upper surface of the lower plate 142, respectively. The reinforcing ribs 144 are arranged between the upper plate 141 and the lower plate 142, the upper ends of the reinforcing ribs 144 are connected with the lower surface of the upper plate 141, the lower ends of the reinforcing ribs 144 are connected with the upper surface of the lower plate 142, the structural strength of the upper plate 141 and the structural strength of the lower plate 142 can be simultaneously enhanced by the reinforcing ribs 144, and the reliability of the bottom plate is improved.

According to another embodiment of the present invention, the reinforcing ribs 144 are disposed on the upper surface of the lower plate 142, and the cross section of the reinforcing ribs 144 is gradually reduced from the bottom to the top. It can be understood that the section of the reinforcing rib 144 is constructed into a triangular section, the collision impact is gradually attenuated in the process that the lower plate 142 transmits the collision impact to the upper plate 141, the lower plate 142 bears the impact most, and the collision impact borne by the upper plate 141 is smaller than that of the lower plate 142, so that the size of the cross section of the reinforcing rib 144 is gradually reduced in the direction from bottom to top, the arrangement of the reinforcing rib 144 is more reasonable, and the reliability of the bottom plate is improved.

The vehicle according to the present invention is briefly described below.

According to the utility model discloses a be provided with battery package 1 of above-mentioned embodiment on the vehicle, because according to the utility model discloses a be provided with battery package 1 of above-mentioned embodiment on the vehicle, this battery package 1 can protect battery module 12 effectively, has reduced the impaired risk of battery module 12 effectively, has improved battery package 1's reliability to improve vehicle reliability, reduced the impaired risk of battery package 1 in the collision of vehicle.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.

In the description of the present invention, "a plurality" means two or more.

In the description of the present invention, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.

In the description of the invention, the first feature being "on", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.

Other configurations of …, such as … and …, and the like, and operations according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery pack, comprising:

the device comprises a shell, a first fixing piece and a second fixing piece, wherein an accommodating cavity is formed in the shell;

the battery module (12), the said battery module (12) is set up in the said holding cavity;

a floating plate assembly (11), the floating plate assembly (11) being disposed between a bottom wall of the receiving cavity and the battery module (12) and at a lower side of the battery module (12), the floating plate assembly (11) comprising: the floating plate comprises a floating plate body (111), at least part of the floating plate body (111) is constructed to be a hard layer structure, and the floating plate assembly (11) is arranged at a distance from the bottom wall to form a buffer gap.

2. The battery pack according to claim 1, wherein the distance between the lower surface of the floating plate assembly (11) and the bottom wall is a1, the distance between the bottom wall and the lower surface of the battery module (12) is a2, and a1/a2 satisfies: a1/a2 is more than 0 and less than or equal to 0.8.

3. The battery pack according to claim 1, wherein the battery module (12) includes: water-cooling board (13), water-cooling board (13) form in the lower surface of battery module (12), be formed with runner (131) in water-cooling board (13), adjacent two be provided with between runner (131) and be suitable for holding the runner of unsteady board subassembly (11) dodges groove (132), the runner dodges the width in groove (132) and is b1, the width of unsteady board subassembly (11) is b2 b1/b2 satisfies the relational expression: b2/b1 is more than or equal to 0.5 and less than or equal to 1.

4. A battery pack according to claim 3, wherein the height of the flow channel (131) is c1, the thickness of the floating plate assembly (11) is c2, and c1/c2 satisfies the relation: c2/c1 is more than or equal to 1 and less than or equal to 5.

5. The battery pack of claim 1, wherein the housing comprises: the upper surface of the bottom plate is configured as the bottom wall of the accommodating cavity, and a buffer cavity (143) is formed in the bottom plate.

6. The battery pack according to claim 5, wherein the bottom plate includes an upper plate (141) and a lower plate (142) disposed apart from each other, the buffer chamber (143) being formed between the upper plate (141) and the lower plate (142).

7. The battery pack according to claim 6, wherein the lower surface of the upper plate (141) and/or the upper surface of the lower plate (142) is provided with a reinforcing rib (144).

8. The battery pack according to claim 7, wherein both ends of the reinforcing rib (144) are connected to the lower surface of the upper plate (141) and the upper surface of the lower plate (142), respectively.

9. The battery pack according to claim 7, wherein the reinforcing ribs (144) are provided on an upper surface of the lower plate (142), and the size of the cross section of the reinforcing ribs (144) is gradually reduced from the bottom to the top.

10. A vehicle, characterized by comprising: the battery pack according to any one of claims 1 to 9.