CN215451628U

CN215451628U - Battery package and vehicle

Info

Publication number: CN215451628U
Application number: CN202120797982.7U
Authority: CN
Inventors: 凌和平; 熊永; 刁义伟; 许巍; 达红梅
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2021-04-19
Filing date: 2021-04-19
Publication date: 2022-01-07
Anticipated expiration: 2031-04-19

Abstract

The utility model relates to a battery package and vehicle, the battery package includes battery tray and a plurality of battery cell, be formed with the accommodation space that is used for holding battery cell in the battery tray, the battery tray has the second direction of first direction and perpendicular to first direction, a plurality of battery cell arrange along the second direction and set up in accommodation space, the battery cell extends along the first direction and extends to accommodation space's opposite side from one side of accommodation space, wherein, first direction is vehicle advancing direction, the second direction is vehicle width direction, the battery cell who arranges along vehicle advancing direction can be when the side impact effectively disperse impact, and as the biography power structure in order to reduce the damage to the battery package.

Description

Battery package and vehicle

Technical Field

The utility model relates to the field of new energy automobiles, in particular to a battery pack and a vehicle.

Background

With the development of new energy vehicles, the popularity of the new energy vehicles is higher and higher, and the doubt and distrust of consumers on the safety of battery packs are increased, when the battery packs of the existing new energy vehicles are impacted laterally, the battery cores of the battery packs are easily damaged, so that a series of battery pack safety problems are easily caused, and the personal safety of the consumers can be endangered.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the art described above. Therefore, a first object of the present invention is to provide a battery pack, which can effectively reduce the damage of a battery cell when a side impact is applied, thereby ensuring safety.

In order to achieve the above object, an embodiment of an aspect of the present invention provides a battery pack, a battery tray and a plurality of single batteries, wherein a receiving space for receiving the single batteries is formed in the battery tray, the battery tray has a first direction and a second direction perpendicular to the first direction, the plurality of single batteries are arranged in the receiving space along the second direction, the single batteries extend along the first direction and extend from one side of the receiving space to the other side of the receiving space, the first direction is a vehicle traveling direction, and the second direction is a vehicle width direction.

A plurality of single batteries are arranged in a battery tray of the battery pack, the length direction of the single batteries extends along the first direction of the battery tray and extends from one side of the accommodating space to the other side of the accommodating space, and a plurality of single batteries are arranged side by side in the second direction, therefore, when a vehicle is impacted from the side, impact force can be borne by the batteries after being transmitted to the battery pack, the batteries extending along the first direction have a very large stressed area when being impacted from the side, so that the force can be uniformly distributed on the stressed side of the whole battery pack, the damage to an electric core and the battery pack can be effectively prevented, the batteries arranged in the second direction can powerfully support the batteries impacted by the impact force, the impact force borne by the single batteries is effectively enhanced, the probability that the battery pack is damaged due to impact is reduced, and safety is guaranteed.

According to some embodiments of the utility model, the single battery is provided with a pole, and the pole is arranged on an end face of the single battery facing the first direction.

According to some embodiments of the utility model, the extension length of the single battery in the first direction is L, and L is more than or equal to 1000mm and more than or equal to 500 mm.

According to some embodiments of the present invention, the plurality of unit batteries has an extension length D in the second direction, the receiving space has an extension length D1 in the second direction, and 0.96 ≦ D/D1 ≦ 0.99.

According to some embodiments of the utility model, the battery tray comprises a bottom plate, a first longitudinal beam and a second longitudinal beam which extend along the first direction and are arranged oppositely, and a plurality of cross beams which extend along the second direction and are arranged oppositely, wherein two ends of each cross beam are respectively connected with the first longitudinal beam and the second longitudinal beam, and the first longitudinal beam, the second longitudinal beam and the cross beams are respectively connected with the bottom plate to form at least one accommodating space; the height of the single battery is H, the depth of the accommodating space is H1, and H < H1.

According to some embodiments of the utility model, the cross beam comprises a rear cross beam, the rear cross beam comprising a rear cross beam main body portion and a rear cross beam bottom mounting portion, the rear cross beam bottom mounting portion being connected to the base plate, the rear cross beam bottom mounting portion being connected to the rear cross beam main body portion; the rear cross beam further comprises a reinforcing inclined rib, one end of the reinforcing inclined rib is connected with the side face, facing one side of the single battery, of the main body part of the rear cross beam, and the other end of the reinforcing inclined rib is connected with the side face, facing one side of the single battery, of the bottom support part of the rear cross beam.

According to some embodiments of the present invention, at least one first reinforcing rib is disposed in the inner cavity of the rear cross beam main body portion, and the first reinforcing rib divides the inner cavity of the rear cross beam main body portion into a plurality of triangular cavities or a plurality of rectangular cavities.

According to some embodiments of the utility model, the cross member comprises a front cross member, a rear cross member, and a middle cross member disposed between the front cross member and the rear cross member to form two accommodation spaces.

According to some embodiments of the utility model, the cross member includes a base connected to the bottom plate and a cross member main body connected to the base on a side of the base away from the bottom plate.

According to some embodiments of the utility model, the first stringer comprises a first stringer body portion and a first stringer trim portion; at least one second reinforcing rib is arranged in the inner cavity of the first longitudinal beam main body part, and the second reinforcing rib divides the inner cavity of the first longitudinal beam main body part into a plurality of triangular cavities or a plurality of rectangular cavities; the first longitudinal beam lifting lug part is connected with the first longitudinal beam main body part, and the lower side surface of the first longitudinal beam lifting lug part is flush with the lower side surface of the first longitudinal beam main body part; the second longitudinal beam is the same in structure as the first longitudinal beam.

According to some embodiments of the utility model, the first rail main body portion height is H1, and the floor upper side to the first rail main body portion upper side height is H2, wherein H1 > H2 > H.

In order to achieve the above object, another embodiment of the present invention provides a vehicle including the above battery pack.

According to the vehicle of the embodiment of the utility model, the vehicle comprises the battery pack, a plurality of single battery cells are arranged in the battery tray of the battery pack, the length direction of the single battery cells extends along the first direction of the battery tray and extends from one side to the other side of the accommodating space, and a plurality of single battery cells are arranged side by side in the second direction, so that when the vehicle is impacted from the side, the impact force is transmitted to the battery pack and then borne by the battery cells, and the battery cells extending along the first direction have a very large stressed area when the battery cells are impacted from the side, so that the force can be uniformly distributed on the stressed side of the whole battery pack, the damage of the battery cells and the battery pack can be effectively prevented, and the plurality of battery cells arranged in the second direction can powerfully support the battery cells impacted by the impact force, the bearing force of the battery cells can be effectively enhanced, and the damage probability of the battery pack caused by the impact can be reduced, the safety is guaranteed.

Drawings

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

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

fig. 3 is a schematic structural view of a unit cell according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of a rear cross member in accordance with one embodiment of the present invention;

fig. 5 is yet another schematic structural view of a battery pack according to an embodiment of the present invention;

FIG. 6 is a schematic structural view of a cross member according to one embodiment of the present invention;

fig. 7 is a schematic structural diagram of a connection seat according to an embodiment of the utility model;

FIG. 8 is a schematic structural view of a connecting shaft according to one embodiment of the present invention;

fig. 9 is a schematic structural diagram of a vehicle according to an embodiment of the utility model.

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 or similar 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 illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

A battery pack 20 and a vehicle 30 according to an embodiment of the present invention will be described with reference to the drawings.

As shown in fig. 1 to 9, according to some embodiments of the present invention, the battery pack 20 includes a battery tray 10 and a plurality of unit batteries 21, wherein an accommodating space 17 for accommodating the unit batteries 21 is formed in the battery tray 10, the battery tray 10 has a first direction and a second direction perpendicular to the first direction, the plurality of unit batteries 21 are arranged in the accommodating space 17 along the second direction, the unit batteries 21 extend along the first direction and extend from one side of the accommodating space 17 to the other side of the accommodating space 17, wherein the first direction is a traveling direction of the vehicle 30, and the second direction is a width direction of the vehicle 30.

The battery pack 20 is generally disposed on the lower side of the vehicle 30, and in the present embodiment, the first direction of the battery pack 20 is the traveling direction of the vehicle 30, i.e., the length direction of the vehicle 30, and the second direction is the width direction of the vehicle 30.

In the embodiment of the present application, the battery pack 20 includes a tray in which the receiving space 17 for placing the battery cells 21 is formed, and a plurality of battery cells 21 are prevented in the receiving space 17 of the tray.

In some embodiments of the present disclosure, the plurality of unit batteries 21 are arranged in the second direction and are juxtaposed in the accommodating space, and each of the unit batteries 21 extends in the first direction and extends from one side to the other side of the accommodating space 17, i.e. it can be understood that in the first direction, there is only one unit battery 21 in the accommodating space 17, and in the second direction, the plurality of unit batteries 21 are juxtaposed.

When the vehicle 30 is impacted from the side, the impact force is transmitted to the battery pack 20, and at the moment, the single battery 21 facing the impact side of the battery pack 20 is impacted, however, because only one single battery 21 with a very long length is arranged in one accommodating space 17 in the direction, the stressed area of the single battery 21 can be effectively increased, so that the impact force is dispersed, and a plurality of single batteries are arranged in parallel in the second direction, so that the single batteries 21 can also serve as a force transmission structure, therefore, the whole battery pack 20 is a force transmission structure for dispersing the impact force, the damage of the side impact to the battery pack 20 can be effectively reduced while the impact force is effectively dispersed, and the battery pack 20 can also serve as a force transmission structure, so that the damage to the vehicle body is reduced.

Further, in the process of the vehicle 30 moving, if the battery pack 20 is knocked or scratched by road surface sundries, since the battery pack is formed by arranging the plurality of single batteries 21 in parallel in the second direction, when the vehicle 30 moves, the knocking or scratching can only damage one or more single batteries 21, and the single batteries 21 in the battery pack 20 cannot be completely damaged, so that the safety of the battery pack 20 and the driving safety of the vehicle 30 can be effectively ensured, and the vehicle 30 is prevented from suddenly losing power due to the complete damage of the single batteries 21.

In some embodiments of the present disclosure, the single battery 21 is provided with a pole 211, and the pole 211 is disposed on an end surface of the single battery 21 facing the first direction.

It can be understood that, arrange in the second direction and be provided with a plurality of battery cells 21, consequently, in order to improve accommodation space 17's space utilization and guarantee striking safety, set up battery cell 21's utmost point post 211 on battery cell 21 faces the terminal surface of vehicle 30 front side or rear side, can guarantee like this that when receiving the side impact, utmost point post 211 does not participate in biography power, more can prevent utmost point post 211 from damaging battery cell 21, also can effectual improvement space utilization, increase vehicle 30 continuation of the journey mileage.

In some embodiments of the present disclosure, the extension length of the single battery 21 in the first direction is L, and 1000mm ≧ L ≧ 500 mm.

Preferably, battery cell 21 is the rectangle, battery cell 21's length direction extends along first direction, the direction of height is accommodation space 17's depth direction, and width direction extends along the second direction, can effectual improvement space utilization like this, longer length can make accommodation space 17 only need set up a battery cell 21 just in the first direction, thereby can effectively increase the area of side, can effectively disperse the impact when receiving the striking, better reduction battery package 20 and vehicle 30 damage.

In some embodiments of the present disclosure, the plurality of unit batteries 21 has an extension length D in the second direction, the accommodating space 17 has an extension length D1 in the second direction, and 0.96 ≦ D/D1 ≦ 0.99.

Preferably, a plurality of single batteries 21 are arranged in the second direction, the total width of the plurality of single batteries 21 in the second direction is D, and the width of the accommodating space 17 in the second direction is D1, when D/D1 is greater than or equal to 0.96 and less than or equal to 0.99, the space utilization rate of the battery tray or the accommodating space 17 can be effectively improved, and the cruising ability of the vehicle 30 can be improved.

It is understood that a plurality of single batteries 21 are arranged in the accommodating space 17, and the plurality of single batteries 21 are arranged in the second direction and form a single battery pack, that is, it is understood that a single battery pack is arranged in the accommodating space 17, and the single battery pack has only one single battery 21 in the first direction, and the plurality of single batteries 21 are arranged in the second direction, and the width of the single battery pack in the second direction is D.

In some embodiments of the present disclosure, the battery tray includes a bottom plate 15, a first longitudinal beam 12 and a second longitudinal beam 14 extending along a first direction and disposed opposite to each other, and a plurality of cross beams extending along a second direction and disposed opposite to each other, both ends of the plurality of cross beams are respectively connected to the first longitudinal beam 12 and the second longitudinal beam 14, and the first longitudinal beam 12, the second longitudinal beam 14 and the plurality of cross beams are respectively connected to the bottom plate 15 to form at least one accommodating space 17; the height of the unit cell 21 is H, the depth of the receiving space 17 is H1, and H < H1.

In some embodiments of the present disclosure, the cross member includes a front cross member 16, a rear cross member 11, and a middle cross member 13, and the middle cross member 13 is disposed between the front cross member 16 and the rear cross member 11 to form two accommodation spaces 17.

Preferably, the battery tray comprises a first longitudinal beam 12, a second longitudinal beam 14, a bottom plate 15, a front cross beam 16 and a rear cross beam 11, wherein the first longitudinal beam 12 and the second longitudinal beam 14 extend along a first direction and are arranged in parallel relatively, the front cross beam 16 and the rear cross beam 11 extend along a second direction, two ends of the front cross beam 16 and the rear cross beam 11 are respectively connected with the first longitudinal beam 12 and the second longitudinal beam 14, preferably, two ends of the first longitudinal beam 12 are respectively connected with the end parts of the front cross beam 16 and the rear cross beam 11 close to one side of the first longitudinal beam 12, and two ends of the second longitudinal beam 14 are respectively connected with the end parts of the front cross beam 16 and the rear cross beam 11 close to one side of the second longitudinal beam 14; namely, a first end of the first longitudinal beam 12 is connected with a first end of the front cross beam 16, a second end of the first longitudinal beam 12 is connected with a first end of the rear cross beam 11, a first end of the second longitudinal beam 14 is connected with a second end of the front cross beam 16, and a second end of the second longitudinal beam 14 is connected with a second end of the rear cross beam 11; the first longitudinal beam 12, the second longitudinal beam 14, the front cross beam 16, and the rear cross beam 11 are connected with the bottom plate 15 to form an accommodating space 17.

Preferably, the front cross member 16 is disposed on the front side of the battery tray in the first direction, i.e., the side of the battery tray toward the vehicle head, while the rear cross member 11 is disposed on the rear side of the battery tray in the first direction, i.e., the side of the battery tray toward the vehicle tail.

Preferably, the battery tray further comprises a middle cross beam 13 arranged between the front cross beam 16 and the rear cross beam 11, two ends of the middle cross beam 13 are respectively connected with the first longitudinal beam 12 and the second longitudinal beam 14 so that the battery tray forms two accommodating spaces 17, and a connection point of the middle cross beam 13 and the first longitudinal beam 12 and the second longitudinal beam 14 can be a midpoint of the first longitudinal beam 12 and the second longitudinal beam 14 along the first direction.

In an embodiment of the present disclosure, a plurality of single batteries 21 are respectively disposed in the two accommodating spaces 17, that is, a single battery pack is respectively disposed in the two accommodating spaces 17, so that the volume utilization rate of the battery pack 20 can be effectively increased, and the capacity of the battery pack 20 can also be effectively increased, thereby increasing the driving range of the vehicle 30.

It can be understood that the middle cross beam 13 not only can play a role in separating the accommodating space 17, but also can play a role in a force transfer beam, the middle cross beam 13 can serve as a force transfer beam to effectively improve the force transfer effect of side collision of the battery pack 20, the force transfer effect is enhanced, the mode and the rigidity of the battery pack 20 are improved, and the force transfer effect of the battery pack 20 cannot be weakened while the capacity of the battery pack 20 is increased.

In one embodiment of the present disclosure, the cross beam includes a rear cross beam 11, the rear cross beam 11 includes a rear cross beam main body portion 111 and a rear cross beam bottom mounting portion 112, the rear cross beam bottom mounting portion 112 is connected with the bottom plate 15, the rear cross beam bottom mounting portion 112 is connected with the rear cross beam main body portion 111; the rear cross member 11 further includes a reinforcing diagonal rib 113, one end of the reinforcing diagonal rib 113 is connected to a side surface of the rear cross member main body portion 111 facing the battery cell 21, and the other end is connected to a side surface of the rear cross member bottom mounting portion 112 facing the battery cell 21.

Preferably, the rear cross beam 11 includes a rear cross beam main body portion 111 and a rear cross beam bottom support portion 112 connected to the bottom plate 15, the rear cross beam main body portion 111 extends in a vertical direction, one end of the rear cross beam bottom support portion 112 is connected to the rear cross beam main body portion 111, and two ends of the reinforcing tilted rib 113 are respectively connected to the rear cross beam main body portion 111 and the rear cross beam bottom support portion 112, it can be understood that the rear cross beam main body portion 111 and the rear cross beam bottom support portion 112 are directly connected, and at the connection position of the reinforcing tilted rib 113 and the rear cross beam main body portion 111, on the side of the rear cross beam main body portion 111 facing the single battery 21 side, the connection position of the reinforcing tilted rib 113 and the rear cross beam bottom support portion 112 is also on the side of the rear cross beam bottom support portion 112 facing the single battery 21 side; therefore, the reinforcing inclined rib 113 can effectively transmit the force applied to the rear cross beam 11 to the rear cross beam bottom mounting part 112, so that the structural strength of the rear cross beam main body part 111 can be enhanced, and the rear cross beam main body part 111 is prevented from being turned over to the single battery 21 side when being impacted, thereby damaging the battery.

In one embodiment of the present disclosure, at least one first reinforcing rib 114 is disposed in the inner cavity of the rear cross beam main body portion 111, and the first reinforcing rib 114 divides the inner cavity of the rear cross beam main body portion 111 into a plurality of triangular cavities or a plurality of rectangular cavities.

Preferably, a cavity is formed in the rear cross beam main body portion 111, so that the weight can be effectively reduced, and the rear cross beam main body portion can be collapsed to absorb energy when being impacted, so that damage to the battery is reduced. And be provided with a plurality of first strengthening ribs 114 in the cavity of rear beam main part 111, first strengthening rib 114 can be horizontal structure, can be vertical structure also can be the slope structure, therefore, this first strengthening rib 114 is cut apart into a plurality of triangle-shaped die cavities or a plurality of rectangle die cavities with rear beam main part 111, first strengthening rib 114 can guarantee weight standard when effectual reinforcing rear beam main part 111's structural strength, can also make and be provided with a plurality of die cavities in rear beam main part 111, thereby also can effectually guarantee that it can produce when receiving the striking and burst and contract.

Preferably, a plurality of inclined first reinforcing ribs 114 and a plurality of horizontal first reinforcing ribs 114 are arranged in the rear cross beam main body portion 111 to form an "M" shape with an opening facing the outside of the battery pack 20, and the inclined first reinforcing ribs 114 can effectively disperse the impact force applied to the rear cross beam 11, so that the impact force is not too concentrated, thereby avoiding damaging the battery pack 20.

In one embodiment of the present disclosure, the middle beam 13 includes a base 131 and a middle beam main body portion 132 connected to the base 131, the base 131 is connected to the bottom plate 15, and the middle beam main body portion 132 is connected to a side of the base away from the bottom plate.

Preferably, the middle beam 13 includes a middle beam main body portion 132 and a base 131, the middle beam main body portion 132 is connected with the base 131, the base 131 is connected with the bottom plate 15 to fix the middle beam 13 on the bottom plate 15, and the middle beam main body portion 132 divides the battery tray into two receiving spaces 17.

Preferably, the cross member 13 is inverted "T" so that the base 131 and the bottom plate 15 can be connected to each other to secure the cross member 13 to the base 131.

Preferably, the junction between the middle cross member main body portion 132 and the base 131 is located at a position intermediate to the base 131 in the vehicle front-rear direction, in which the force transmission can be made more uniform.

In one embodiment of the present disclosure, the first stringer 12 includes a first stringer body portion 123 and a first stringer ears 121; at least one second reinforcing rib 122 is arranged in the inner cavity of the first longitudinal beam main body part 123, and the inner cavity of the first longitudinal beam main body part 123 is divided into a plurality of triangular cavities or a plurality of rectangular cavities by the second reinforcing rib 122; the first longitudinal beam hanging lug part 121 is connected with the first longitudinal beam main body part 123, and the lower side surface of the first longitudinal beam hanging lug part 121 is flush with the lower side surface of the first longitudinal beam main body part 123; the second longitudinal beam 14 is of the same construction as the first longitudinal beam 12.

Preferably, the first longitudinal beam 12 and the second longitudinal beam 14 have the same structure, the first longitudinal beam 12 includes a first longitudinal beam main body portion 123 and a first longitudinal beam ear hanging portion 121, the first longitudinal beam ear hanging portion 121 is disposed on one side of the first longitudinal beam main body portion 123 far away from the battery cell, and a lower side surface of the first longitudinal beam ear hanging portion 121 in the vertical direction of the vehicle 30 is flush with a lower side surface of the first longitudinal beam main body portion 123 in the vertical direction of the vehicle 30, that is, a bottom surface of the first longitudinal beam 121 is flush with a bottom surface of the first longitudinal beam main body portion 123, so that a force applied to the first longitudinal beam ear hanging portion 121 can be effectively transmitted to the first longitudinal beam main body portion 123, and meanwhile, the force applied to the first longitudinal beam ear hanging portion 121 can be transmitted to the bottom plate 15, so as to prevent the longitudinal beam from being forced to turn over, and thus the battery pack 20 can be better protected.

Preferably, the first side member main body 123 has a cavity therein so that the first side member main body 123 can reduce weight and can generate a crush space, and the second ribs 122 divide the inner cavity of the first side member main body 123 into a plurality of triangular cavities or a plurality of rectangular cavities so that the crush cavities can be maintained while the structural strength of the first side member main body 123 is enhanced.

Preferably, the second reinforcing beads 122 are obliquely arranged to divide the inner cavity of the first side member main body portion 123 into a plurality of triangular cavities, and the obliquely arranged second reinforcing beads 122 can effectively disperse the force applied to the first side member 12, thereby reducing the degree of damage thereof.

In one embodiment of the present disclosure, the height of the first longitudinal beam main body portion 123 is H1, and the height from the upper side of the bottom plate 15 to the upper side of the first longitudinal beam main body portion 123 is H2, where H1 > H2 > H. Preferably, the pole 211 is arranged on the end face of the cell 21 facing the front cross member 16 or the rear cross member 11, it being understood that when there are two receiving spaces 17, the cell 21 near the front cross member 16 has its pole 211 arranged on the end face facing the front cross member 16, and the cell 21 near the rear cross member 11 has its pole 211 arranged on the end face facing the rear cross member 11.

Preferably, the height of the first side member main body portion in the vehicle vertical direction is H1, and the height of the upper side surface of the floor panel 15, i.e., the side surface of the floor panel in contact with the battery cell, to the upper side surface of the first side member main body portion is H2, when H1 > H2 > H, the side member can effectively protect the battery and restrict the swelling of the battery while making effective use of the space. Preferably, the height from the upper side of the bottom plate 15 to the upper side of the first longitudinal beam main body part 123 is the depth of the accommodating space 17, and it can be understood that the height of the first longitudinal beam main body part 123 is greater than the depth of the accommodating space 17, and the depth of the accommodating space 17 is greater than the height of the single battery 21, so that the first longitudinal beam 12 can better transmit force to the single battery 21, and the depth of the accommodating space 17 is greater than the height of the single battery 21, so that the first longitudinal beam 12 can effectively limit the expansion of the single battery 21 in the second direction.

Preferably, a partition 212 is respectively arranged between the single battery 21 and the first longitudinal beam 12 and between the single battery 21 and the second longitudinal beam 14, that is, the partition 212 is arranged between the first longitudinal beam 12 and the adjacent single battery 21, and the partition 212 is also arranged between the second longitudinal beam 14 and the adjacent single battery 21, the partition 212 may be made of a material having heat insulation, heat preservation and insulation functions, so that the partition has a heat preservation and insulation effect, thereby effectively ensuring the electrical safety of the battery pack 20, and effectively maintaining the temperature in the battery pack 20, meanwhile, the partition 212 can also play a role in absorbing and buffering the expansion force of the single battery 21, when the partition 212 has elasticity, the partition can also play a role in buffering the expansion of the single battery 21, thereby effectively protecting the single battery 21.

Preferably, the battery pack 20 further comprises a cold plate 18 and an upper cover 19, the cold plate 18 is disposed on a side of the single battery 21 away from the base plate 15, the upper cover 19 is disposed on a side of the cold plate 18 away from the single battery 21, the upper cover 19 is in sealed connection with the first longitudinal beam 12, the second longitudinal beam 14, the front cross beam 16 and the rear cross beam 11 of the battery tray, the plurality of single batteries 21 are glued with the base plate 15 and the cold plate 18, and the cold plate 18 is also glued with the upper cover 19, so that the mode and torsional rigidity of the battery pack 20 are effectively improved, and better force transmission is achieved when an impact is applied.

The inside cooling runner that is provided with of cold drawing 18, this cooling runner divide into reposition of redundant personnel runner and vortex runner, reposition of redundant personnel runner is carried the refrigerant to vortex runner or is exported the refrigerant in the vortex runner, and the refrigerant in the vortex runner is then cooled off the battery to make the temperature difference of each battery cell 21 in the battery package 20 be less than 5 ℃, and the temperature difference of each part of battery cell 21 also is less than 5 ℃, with the temperature uniformity of better assurance battery package 20, make its work that can be better.

Preferably, the middle cross beam 13 further includes a connecting seat 134 and a connecting member 135, the connecting seat 134 is connected to the middle cross beam main body portion 132, a mounting groove 133 may be opened on the middle cross beam main body portion 132 to mount the connecting seat 134, so that a side of the connecting seat 134, which is away from the bottom plate 15 after being mounted, is flush with a side of the middle cross beam main body portion 132, which is away from the bottom plate 15, and a connecting hole 136 is provided on the mounting seat to be connected to the connecting member 135.

Preferably, the connection member 135 includes a connection portion 137 and a flange 138, the connection portion 136 penetrates through an end surface of one side of the mounting base away from the bottom plate 15 and extends in a vertical direction, the connection portion 137 penetrates through a through hole provided on the upper cover 19 to be connected with the connection portion 136, so that the upper cover 19 is located between the flange 138 and the middle cross beam main body portion 132, thereby enabling the middle cross beam 13 to be connected with the upper cover 19, and it is understood that a sealing ring is provided between the upper cover 19 and the flange 138 to seal the battery pack 20.

Preferably, a threaded hole 139 is formed in one side of the flange 138 away from the upper cover 19 to enable the flange 138 to be screwed with a vehicle body, so that the middle cross beam 13 can be connected with the vehicle body, the battery pack 20 can be better installed, and the installation strength of the battery pack 20 is ensured, and it is understood that a sealing ring is arranged between the flange 138 and the vehicle body to enable the connection part to be better sealed.

Another embodiment of the present invention provides a vehicle 30, and the vehicle 30 includes the battery pack 20.

In some embodiments of the present disclosure, the plurality of unit batteries 21 are arranged in the second direction and are juxtaposed in the accommodating cavity, and each of the unit batteries 21 extends in the first direction and extends from one side to the other side of the accommodating space 17, i.e. it can be understood that in the first direction, there is only one unit battery 21 in the accommodating space 17, and in the second direction, the plurality of unit batteries 21 are juxtaposed.

When the vehicle 30 is impacted from the side, the impact force is transmitted to the battery pack 20, and at this time, the single battery 21 facing the impact side of the battery pack 20 is impacted, however, because only one single battery 21 with a very long length is arranged in one accommodating space 17 in the direction, the stressed area of the single battery 21 can be effectively increased, so that the impact force is dispersed, and a plurality of single batteries 21 are arranged in parallel in the second direction, so that the single batteries 21 can also serve as a force transmission structure, therefore, the whole battery pack 20 serves as a force transmission structure for dispersing the impact force, the damage of the side impact to the battery pack 20 can be effectively reduced while the impact force is effectively dispersed, and the battery pack 20 can also serve as a force transmission structure, so that the damage to the vehicle body is reduced.

In the description of the present invention, it is to be understood that the terms "central," "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 are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" 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 defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. 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 present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., 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 utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A battery pack, comprising: battery tray (10) and a plurality of battery cell, be formed with in battery tray (10) and be used for holding accommodation space (17) of battery cell (21), battery tray (10) have first direction and perpendicular to the second direction of first direction, it is a plurality of battery cell follows the second direction is arranged set up in the accommodation space, battery cell (21) are followed first direction extends and follows one side of accommodation space extends to accommodation space's opposite side, wherein, first direction is vehicle advancing direction, and the second direction is vehicle width direction.

2. The battery pack according to claim 1, wherein the unit cell (21) is provided with a terminal post (211), and the terminal post (211) is provided on an end surface of the unit cell (21) facing the first direction.

3. The battery pack according to claim 1, wherein the extension length of the unit cells in the first direction is L, and 1000mm ≧ L ≧ 500 mm.

4. The battery pack according to claim 1, wherein the plurality of unit batteries extend in the second direction by a length D, the receiving space extends in the second direction by a length D1, and 0.96 ≦ D/D1 ≦ 0.99.

5. The battery pack according to claim 1, wherein the battery tray comprises a bottom plate (15), a first longitudinal beam (12) and a second longitudinal beam (14) extending in the first direction and disposed opposite to each other, and a plurality of cross beams extending in the second direction and disposed opposite to each other, both ends of the plurality of cross beams are connected to the first longitudinal beam (12) and the second longitudinal beam (14), respectively, and the first longitudinal beam (12), the second longitudinal beam (14), and the plurality of cross beams are connected to the bottom plate (15) to form at least one of the accommodating spaces (17);

the height of the single battery is H, the depth of the accommodating space is H1, and H < H1.

6. The battery pack according to claim 5, wherein the cross member comprises a rear cross member (11), the rear cross member (11) comprises a rear cross member main body portion (111) and a rear cross member bottom bracket portion (112), the rear cross member bottom bracket portion (112) is connected to the bottom plate (15), and the rear cross member bottom bracket portion (112) is connected to the rear cross member main body portion (111);

the rear cross beam (11) further comprises a reinforcing inclined rib (113), one end of the reinforcing inclined rib (113) is connected with the side face, facing one side of the single battery, of the rear cross beam main body portion (111), and the other end of the reinforcing inclined rib is connected with the side face, facing one side of the single battery, of the rear cross beam bottom support portion (112).

7. The battery pack according to claim 6, wherein at least one first reinforcing rib (114) is provided in the inner cavity of the rear cross member main body portion, and the first reinforcing rib (114) divides the inner cavity of the rear cross member main body portion into a plurality of triangular cavities or a plurality of rectangular cavities.

8. The battery pack according to claim 5, wherein the cross member includes a front cross member (16), a rear cross member (11), and a middle cross member (13), and the middle cross member (13) is disposed between the front cross member (16) and the rear cross member (11) to form two receiving spaces.

9. The battery pack according to claim 8, wherein the middle cross member (13) includes a base (131) and a middle cross member main body portion (132) connected to the base (131), the base (131) is connected to the bottom plate (15), and the middle cross member main body portion (132) is connected to a side of the base (131) away from the bottom plate (15).

10. The battery pack of claim 5, wherein the first longitudinal beam (12) comprises a first longitudinal beam main portion (123) and a first longitudinal beam hanger portion (121);

at least one second reinforcing rib (122) is arranged in the inner cavity of the first longitudinal beam main body part (123), and the inner cavity of the first longitudinal beam main body part (123) is divided into a plurality of triangular cavities or a plurality of rectangular cavities by the second reinforcing rib (122);

the first longitudinal beam hanging lug part (121) is connected with the first longitudinal beam main body part (123), and the lower side surface of the first longitudinal beam hanging lug part (121) is flush with the lower side surface of the first longitudinal beam main body part (121);

the second longitudinal beam (14) is of the same structure as the first longitudinal beam (12).

11. The battery pack of claim 10, wherein the first side rail body portion (123) has a height H1 and the height from the upper side of the base plate to the upper side of the first side rail body portion is H2, wherein H1 > H2 > H.

12. A vehicle, characterized in that the vehicle comprises a battery pack according to any one of claims 1-11.