CN219436023U - Battery pack and electric vehicle - Google Patents

Abstract

The utility model provides a battery pack and an electric vehicle, and belongs to the technical field of electric vehicles. The battery pack is used for being locked in electric vehicle through locking mechanism, the battery pack include the box with set up in electric core in the box, the box is enclosed by a plurality of plates and is established and form, a plurality of in the plate, be located at least the plate of box lateral part is equipped with a plurality of die cavities, the die cavity of plate is followed the length and/or the width direction extension of battery pack. The plate on the side part of the box body of the battery pack is provided with a cavity, namely the plate is of a frame structure, so that the strength of the plate is improved; the plate pieces at the side parts of the box body are provided with the die cavities, so that the box body of the battery pack has higher structural strength and better structural integrity, and has better protection effect on the battery cells in the battery pack; the adoption of the plate with the cavity not only can improve the strength of the box body, but also can lighten the quality of the box body, so that the quality of the battery pack is lightened, and the bearing and the installation of the battery pack are convenient.

Description

Battery pack and electric vehicle

Technical Field

The utility model relates to the technical field of electric vehicles, in particular to a battery pack and an electric vehicle.

Background

The existing battery pack mounting modes of electric vehicles are generally divided into fixed mounting (such as direct-charging type electric vehicles) and replaceable mounting (such as quick-changing type electric vehicles or electric vehicles with direct charging and quick-changing types), wherein the fixedly mounted battery pack is generally fixed on the electric vehicles; the battery pack which is installed in a replaceable way generally adopts a movable installation mode, and the battery pack can be taken down and replaced at any time.

When the battery pack is installed, the battery pack needs to be moved to the vehicle end through the battery replacement equipment, and is installed on the electric vehicle through the matching of a locking piece on the battery pack and a locking mechanism of the electric vehicle, when the battery pack needs to be disassembled, the battery pack is unlocked and taken down from the electric vehicle through the locking mechanism of the electric vehicle acted on by the unlocking mechanism. In the prior art, the electric power consumption of the electric vehicle is larger, particularly the electric truck, and the corresponding required battery pack has larger volume and mass, and simultaneously, higher requirements are provided for the structural strength of the battery pack.

Disclosure of Invention

The utility model aims to overcome the defects of larger volume, larger mass and relatively lower structural strength of a battery pack in the prior art, and provides the battery pack and an electric vehicle.

The utility model solves the technical problems by the following technical scheme:

the utility model provides a battery package for through locking mechanism lock in electric vehicle, the battery package include the box with set up in electric core in the box, the box is enclosed by a plurality of plates and is established and form, a plurality of in the plate, be located at least the plate of box lateral part is equipped with a plurality of die cavities, the die cavity of plate is followed the length and/or the width direction extension of battery package.

In the scheme, the plate at the side part of the box body of the battery pack is provided with the cavity, namely the plate is of a frame structure, so that the strength of the plate is improved; the plate pieces at the side parts of the box body are provided with the die cavities, so that the box body of the battery pack has higher structural strength and better structural integrity, and has better protection effect on the battery cells in the battery pack; compared with the prior art, the battery pack has the advantages that the thicker plate is adopted, the plate with the cavity is adopted, the strength of the box body can be improved, the quality of the box body can be reduced, the quality of the battery pack is further reduced, and the battery pack is convenient to bear and install.

Preferably, the cavity of the plate member penetrates through two ends of the plate member.

In this scheme, the die cavity link up the both ends of plate, can furthest's reduction plate's quality, and then lighten the quality of battery package, make things convenient for the bearing and the transportation of battery package, and the structure atress that link up of die cavity also is favorable to the plate inside is more even simultaneously, and then improves the structural strength of box.

Preferably, the plate includes a side plate and a locking member, the side plate is provided with a first locking hole, the locking member is disposed in a cavity of the side plate and corresponds to the first locking hole, and the locking member is used for locking the battery pack to the electric vehicle through cooperation of the first locking hole and the locking mechanism.

In the scheme, the locking piece is arranged in the cavity of the side plate, so that the cavity space of the side plate is effectively utilized, and meanwhile, the side plate has a certain protection effect on the locking piece; the first locking hole corresponds to the locking piece, so that the locking mechanism of the electric vehicle can conveniently extend into the cavity through the first locking hole and be matched with the locking piece, and further the battery pack and the electric vehicle can be locked.

Preferably, the locking piece comprises a hanging plate and a locking shaft, the hanging plate is arranged in the cavity of the side plate, a second locking hole is formed in the hanging plate, the second locking hole and the first locking hole are correspondingly arranged, and the locking shaft is arranged in the second locking hole and connected with the hanging plate.

In the scheme, the hanging plate is convenient for installing the lock shaft, the lock shaft can be installed in the second locking hole of the hanging plate in advance, and then the whole hanging plate is installed in the cavity of the side plate, so that the installation efficiency of the lock shaft is improved; when the lock shaft needs to be checked and replaced, the whole hanging plate can be conveniently detached, and then the lock shaft in the hanging plate is checked and replaced; meanwhile, the second locking hole is arranged corresponding to the first locking hole, so that the locking mechanism can conveniently extend into the first locking hole and be matched with the locking shaft to finish the locking of the battery pack.

Preferably, first mounting holes are correspondingly formed in two opposite side walls of the second locking hole, and two ends of the lock shaft respectively penetrate through the two oppositely arranged first mounting holes.

In the scheme, two ends of the lock shaft respectively penetrate through the two first mounting holes, so that the mounting firmness of the lock shaft is ensured, and meanwhile, the stress area between the lock shaft and the hanging plate is increased; after the locking shaft and the locking mechanism are matched to finish the locking of the battery pack, the battery pack is hung at the bottom of the electric vehicle body through the locking shaft; the structure is arranged so that the stress at the two ends of the lock shaft is more uniform, the bearing capacity is larger, and the battery pack with larger bearing quality is facilitated.

Preferably, at least one end of the lock shaft extends out of the hanging plate, and the extending end of the lock shaft is provided with a first limiting part to limit the lock shaft to be separated from the hanging plate.

In this scheme, the lock axle is limited to the link plate by the first spacing portion of its end that stretches out, avoids the lock axle to break away from in the first mounting hole of link plate, has improved the fastness of lock axle installation, and then has improved the fastness of battery package and electric vehicle locking.

Preferably, at least two lock shafts are arranged on the hanging plate at intervals along the extending direction of the hanging plate.

In this scheme, be equipped with two lock shafts at least on the link plate, can be connected with the different locking mechanism on the electric vehicle correspondingly for the atress of battery package is more even, and then improves the stability of battery package locking, avoids battery package and electric vehicle spare to produce relative displacement.

Preferably, along the extending direction of the hanging plate, two ends of the hanging plate are respectively provided with a limiting piece, and the limiting pieces are connected with the side plate or the hanging plate so as to prevent the hanging plate and the side plate from generating relative displacement.

In this scheme, the extending direction of link plate also inserts the direction of limit board promptly, sets up the locating part at the both ends of link plate along this direction, carries out spacingly to the link plate, can prevent the link plate slippage in the limit board, guarantees the fastness of link plate installation.

Preferably, the bottom surface of limit curb plate still is equipped with the guiding hole, the inner peripheral wall of guiding hole is equipped with the guide ring, the material rigidity coefficient of guide ring is greater than the material rigidity coefficient of limit curb plate, the guiding hole is used for with the bearing the battery pack trades electric equipment and fixes a position.

In this scheme, the inner peripheral wall of guiding hole is equipped with the guide ring, can make the battery package when carrying out the location with the battery replacement equipment, and the guide piece of battery replacement equipment directly contacts with the great guide ring of material rigidity coefficient to avoid guide piece and guiding hole's pore wall contact, produce great wearing and tearing to the pore wall of guiding hole.

Preferably, a connecting ring is further arranged between the guide hole and the guide ring, clamping grooves are formed in the inner peripheral walls of the openings at the two ends of the connecting ring, protruding portions are arranged on the outer peripheral walls of the openings at the two ends of the guide ring, and the guide ring is connected with the inner peripheral walls of the connecting ring through the protruding portions and the clamping grooves.

In the scheme, the connecting ring between the guide ring and the guide hole has a connecting effect, and can buffer the conduction of acting force of the guide ring to the guide hole, so that the damage to the hole wall of the guide hole is further avoided; and the guide ring and the connecting ring are connected in a mode that the clamping groove and the protruding part are matched, so that the structure is simple, and the connection is firm.

Preferably, the bottom surface of the side plate is provided with a main guide hole and an auxiliary guide hole, the main guide hole is a circular hole, and the auxiliary guide hole is a kidney-shaped hole.

In the scheme, the main guide hole is a circular hole, so that the positioning requirement between the main guide hole and the guide piece of the battery exchange equipment is high, and the positioning accuracy is ensured; the auxiliary guide hole is a waist-shaped hole and can be used for preliminary positioning of the battery pack, and meanwhile, the auxiliary guide hole has a certain tolerance to the positioning of the battery pack, so that the battery pack is positioned more conveniently and rapidly.

Preferably, the box further comprises a front side plate and a rear side plate, the front side plate and the two ends of the rear side plate are connected through the side plates respectively, grooves are formed in one side, connected with the side plates, of the front side plate and the rear side plate, and the grooves are matched with the cross sections of the hanging plates so that the hanging plates can penetrate into the cavities of the side plates from the grooves.

In the scheme, the front side plate, the rear side plate and the side plates on two sides are jointly enclosed to form a frame type peripheral side structure of the box body, so that the overall strength of the box body is improved; the recess setting of preceding curb plate and posterior lateral plate, make things convenient for the link plate to penetrate and install in the die cavity of limit curb plate, when the link plate need inspect or change, only need take out it from the die cavity of limit curb plate through the recess can, and need not unpack apart whole box, very big convenience the dismouting of link plate.

Preferably, the box body further comprises a plurality of middle partition plates arranged at intervals, the middle partition plates extend transversely along the box body, and two ends of the middle partition plates are respectively connected with the side plates on two sides of the box body.

In this scheme, the inner space of well baffle with the battery package box is divided into a plurality of regions, conveniently carries out the function subregion to the inner space of battery package, and well baffle is connected with the limit curb plate of battery package simultaneously, forms structural support in the inside of box, has further strengthened the bulk strength of box.

Preferably, the side plate is provided with a step part extending towards the inside of the box body, two ends of the middle partition plate are respectively provided with a clamping groove, and the clamping grooves are matched and clamped with the step part.

In this scheme, the setting of the step portion of limit curb plate can further improve the overall structure intensity of limit curb plate on the one hand, and on the other hand is convenient to cooperate with the block groove at middle septum both ends through step portion, strengthens the connection with middle septum to improve the overall structure intensity of box.

Preferably, the battery pack further comprises an unlocking mechanism, the unlocking mechanism is installed in a cavity of the side plate, and the unlocking mechanism is used for making stretching movement relative to the box body under the action of external force and acting on the locking mechanism to unlock the battery pack from the electric vehicle.

In the scheme, the unlocking mechanism is arranged in the cavity of the side plate, so that the cavity space of the side plate is effectively utilized, and meanwhile, the side plate has a certain protection effect on the unlocking mechanism; meanwhile, the unlocking structure is convenient for unlocking the battery pack and the electric vehicle, and is beneficial to improving the power conversion efficiency.

Preferably, the side plate is further provided with a first unlocking hole, the hanging plate is further provided with a second unlocking hole corresponding to the first unlocking hole, and the unlocking mechanism penetrates through the first unlocking hole and the second unlocking hole and is used for making stretching movement relative to the first unlocking hole and the second unlocking hole under the action of external force.

In the scheme, the second unlocking hole on the hanging plate and the first unlocking hole on the side plate are correspondingly arranged, so that the unlocking mechanism can conveniently extend out of the box body and act on the locking mechanism, and the battery pack is unlocked from the electric vehicle; meanwhile, the first unlocking hole and the second unlocking hole have a certain guiding effect on the movement of the unlocking mechanism, so that the accurate alignment of the unlocking mechanism and the locking mechanism is ensured, and the unlocking precision and the unlocking efficiency are improved.

Preferably, the unlocking mechanism comprises an unlocking rod assembly and a mounting assembly, the mounting assembly is sleeved on the outer peripheral side of the unlocking rod assembly and is connected with the hanging plate, and the unlocking rod assembly penetrates through the first unlocking hole and the second unlocking hole and is used for performing stretching movement relative to the first unlocking hole and the second unlocking hole under the action of external force.

In this scheme, the convenient release mechanism of installation subassembly is connected with the link plate, improves release mechanism's installation fastness, and the release lever subassembly is located to the installation subassembly cover simultaneously's periphery side, has certain guide effect to the extension motion of release lever subassembly, is favorable to improving the precision that release lever subassembly and locking mechanism counterpoint, and then improves the unblock efficiency between battery package and the electric vehicle.

Preferably, the mounting assembly comprises a connecting piece, the connecting piece is connected to the hanging plate, and the connecting piece is embedded in the inner peripheral wall of the unlocking rod assembly and the first unlocking hole.

In this scheme, connect release mechanism in the link plate through the connecting piece, increased release mechanism connection's fastness, and the connecting piece inlays the inner peripheral wall of locating guide and first unlocking hole, effectively utilized first unlocking hole's space for the structure is compacter.

Preferably, the installation assembly further comprises a guide piece, and the guide piece is sleeved on the outer peripheral side of the unlocking rod assembly and is connected with the connecting piece.

In this scheme, the guide has certain guiding effect to the motion of unblock pole subassembly, is favorable to improving the counterpoint precision of unblock pole subassembly and locking mechanism, and then improves the unblock efficiency between battery package and the electric vehicle.

Preferably, the unlocking mechanism further comprises an elastic piece, two ends of the elastic piece are respectively abutted to the mounting assembly and the unlocking rod assembly, and the elastic piece is used for providing acting force in opposite directions when the unlocking rod assembly stretches out and moves relative to the mounting assembly.

In the scheme, when the unlocking rod assembly performs extending movement relative to the mounting assembly, the elastic piece abutted between the unlocking rod assembly and the mounting assembly is continuously compressed further, so that the extending movement of the unlocking rod assembly can be buffered, and rigid collision between the unlocking rod assembly and the locking mechanism is avoided; after the extending movement of the unlocking rod assembly is completed to unlock the battery pack and the external force is removed, the unlocking rod assembly can automatically reset to an initial state under the action of the restoring force of the elastic piece.

Preferably, the unlocking rod assembly comprises a first unlocking rod and a second unlocking rod which are rigidly connected, the diameter of the first unlocking rod is larger than that of the second unlocking rod, and the first unlocking rod is used for pushing the second unlocking rod to do extending movement relative to the box body under the action of external force.

In the scheme, the first unlocking rod directly bears the action of external force, the diameter of the first unlocking rod is set larger, the stressed area of the stressed end can be increased, and the extending movement is more stable; meanwhile, the unlocking rod assembly consists of a first unlocking rod and a second unlocking rod, namely, the structural parts are further detached, and the unlocking rod assembly is convenient to install in the box body.

Preferably, one end of the first unlocking rod, which is close to the second unlocking rod, is provided with a mounting groove and a second mounting hole which are communicated with each other, the mounting groove extends along the axial direction of the first unlocking rod, the second mounting hole extends along the radial direction of the first unlocking rod and penetrates through the first unlocking rod, and the second unlocking rod is partially sleeved in the mounting groove and is connected with the first unlocking rod through a locating pin and the second mounting hole.

In the scheme, the first unlocking rod part is sleeved in the mounting groove of the second unlocking rod, and the mounting groove has a certain limiting effect, so that the second unlocking rod is prevented from shifting in the process of being pushed by the first unlocking rod; the first unlocking rod and the second unlocking rod are connected through the locating pin, the connecting mode is simple, the operation is convenient, and the rigid connection between the first unlocking rod and the second unlocking rod is effectively ensured.

Preferably, the second unlocking rod comprises a first rod section and a second rod section, the second rod section is sleeved in the guide piece, the diameter of the second rod section is larger than that of the first rod section, the inner peripheral wall of the guide piece is provided with a second limiting part protruding inwards, and the second limiting part is abutted to the end face of the second rod section, which is close to the first rod section.

In the scheme, the diameter of the second rod section is larger than that of the first rod section, so that the end face of one end of the second rod section connected with the first rod section is larger, part of the end face is exposed, the second rod section is conveniently abutted with the second limiting part of the guide piece, the second rod section is further limited in the guide piece, the limiting connection of the lock rod assembly and the installation assembly is realized, the connection mode is simple, and the installation is easy; meanwhile, the second rod section is positioned in the guide piece, the second rod section and the guide piece have larger guide areas, and the guide piece can fully play the guide effect of the guide piece on the extension movement of the unlocking rod assembly.

Preferably, the battery pack further comprises a box-end electric connector and/or a water connector, wherein the box-end electric connector and the water connector are/is arranged on the plate of the battery pack, the box-end electric connector is used for being electrically connected with a car-end electric connector of the electric vehicle, and the water connector is used for being connected with a waterway system of the electric vehicle to cool the battery pack.

In the scheme, the plate on the periphery side of the battery pack has larger strength due to the arrangement of the cavity, so that larger bearing capacity can be provided for connection with the box end electric connector and the water connector, and the stability of connection is ensured; the box end electric connector is convenient to electrically connect with the vehicle end electric connector of the electric vehicle so as to supply power for the electric vehicle; the water connector is connected with the waterway system of the electric vehicle, so that the temperature of the battery pack is reduced in a liquid cooling mode, and the use safety of the battery pack is ensured.

An electric vehicle comprises a locking mechanism, and the electric vehicle further comprises the battery pack, wherein the battery pack is locked to the electric vehicle through the locking mechanism.

In this scheme, electric vehicle passes through locking mechanism with the battery package firmly lock on electric vehicle, simultaneously because the week curb plate spare of the box of battery package has the die cavity, has increased the structural strength of whole battery package, has alleviateed the quality of battery package simultaneously, conveniently installs the battery package in electric vehicle.

The utility model has the positive progress effects that:

in the utility model, the plate of the side part of the box body of the battery pack is provided with the cavity, namely the plate is of a frame structure, so that the strength of the plate is improved; the plate pieces at the side parts of the box body are provided with the die cavities, so that the box body of the battery pack has higher structural strength and better structural integrity, and has better protection effect on the battery cells in the battery pack; compared with the prior art, the battery pack has the advantages that the thicker plate is adopted, the plate with the cavity is adopted, the strength of the box body can be improved, the quality of the box body can be reduced, the quality of the battery pack is further reduced, and the battery pack is convenient to bear and install.

Drawings

Fig. 1 is a schematic perspective view of a body rail, a body bracket and a battery pack of an electric vehicle according to an embodiment of the present utility model.

Fig. 2 is a schematic perspective view of a battery pack according to an embodiment of the present utility model.

Fig. 3 is a schematic top view of a battery pack (with cover plate removed) according to an embodiment of the utility model.

Fig. 4 is a schematic front view of a battery pack according to an embodiment of the present utility model.

Fig. 5 is a schematic perspective view of a battery pack (with cover plate and battery cells removed) according to an embodiment of the utility model.

Fig. 6 is a schematic perspective view of a side plate of a battery pack according to an embodiment of the utility model.

Fig. 7 is a schematic perspective view illustrating another view of an edge side plate of a battery pack according to an embodiment of the present utility model.

Fig. 8 is a schematic side view of a side plate of a battery pack according to an embodiment of the present utility model.

Fig. 9 is a schematic perspective view of a hanging plate of a battery pack according to an embodiment of the present utility model.

Fig. 10 is a schematic view showing a partial structure of a battery pack according to an embodiment of the present utility model after a hanging plate and a side plate are assembled.

Fig. 11 is a schematic view showing a partial structure of a junction between a side plate and a front plate of a battery pack according to an embodiment of the utility model.

Fig. 12 is a schematic cross-sectional view illustrating a connection between a side plate and a front plate of a battery pack according to an embodiment of the utility model.

Fig. 13 is a schematic cross-sectional view illustrating a guide ring and a connection ring of a battery pack according to an embodiment of the present utility model.

Fig. 14 is an exploded view of a guide ring and a connection ring of a battery pack according to an embodiment of the present utility model.

Fig. 15 is a schematic cross-sectional view illustrating an unlocking mechanism of a battery pack according to an embodiment of the present utility model after the unlocking mechanism is disposed on the side plate.

Fig. 16 is a schematic perspective view of an unlocking mechanism of a battery pack according to an embodiment of the present utility model.

Fig. 17 is a schematic cross-sectional view of an unlocking mechanism of a battery pack according to an embodiment of the utility model.

Fig. 18 is an exploded view of an unlocking mechanism of a battery pack according to an embodiment of the present utility model.

Fig. 19 is a schematic structural view of a locking mechanism of an electric vehicle according to an embodiment of the present utility model.

Fig. 20 is a schematic diagram showing an unlocking process of a locking mechanism of an electric vehicle according to an embodiment of the present utility model.

Reference numerals illustrate:

battery pack 100

Electric vehicle 200

Locking mechanism 300

Body rail 400

Vehicle body bracket 500

Box body 1

Cavity 10

Side plate 11

Step 111

Unlocking cylinder 112

Locking member 12

First locking hole 121

Hanging plate 122

Lock shaft 123

Second locking hole 124

First mounting hole 125

Main pilot hole 1261

Auxiliary guide hole 1262

Guide ring 127

Protrusion 1271

Connecting ring 128

Clamping groove 1281

First unlocking hole 1291

Second unlocking hole 1292

Front side plate 13

Rear side plate 14

Groove 15

Middle partition 16

Engagement groove 161

Cover plate 17

Bottom plate 18

Unlocking mechanism 2

Connecting piece 21

Connecting hole 211

Guide 22

Second limiting part 221

Elastic member 23

First unlocking lever 24

Mounting groove 241

Second mounting holes 242

Second unlocking lever 25

First pole segment 251

Second pole segment 252

Locating pin 26

Connecting bolt 27

Cell 3

Box end electric connector 4

Water connector 5

Lock link 320

Lock base 310

Locking groove 340

Bolt 330

Unlocking surface 321

Detailed Description

The utility model will now be more fully described by way of example only and with reference to the accompanying drawings, but the utility model is not thereby limited to the embodiments described.

As shown in fig. 1 to 20, the present embodiment discloses an electric vehicle 200 including a heavy truck, a light truck, and the like. The electric vehicle 200 comprises a vehicle body longitudinal beam 400, a vehicle body bracket 500 and a battery pack 100, wherein the vehicle body bracket 500 is connected to the vehicle body longitudinal beam 400, a locking mechanism 300 is arranged on the vehicle body bracket 500, a locking piece 12 is arranged in the battery pack 100, and the battery pack 100 is connected to the vehicle body bracket 500 through the matching of the locking piece 12 and the locking mechanism 300. The battery pack 100 is further provided with an unlocking mechanism 2, the battery pack 100 is penetrated from top to bottom by the unlocking mechanism 2, and the unlocking mechanism 2 is used for acting on the locking mechanism 300 under the action of external force to unlock the battery pack 100 from the electric vehicle 200.

As shown in fig. 2 to 18, the present embodiment discloses a battery pack 100, the battery pack 100 is locked to an electric vehicle 200 by a locking mechanism 300, the battery pack 100 includes a case 1 and a battery core 3 disposed in the case 1, the case 1 is formed by enclosing a plurality of plate members, a plurality of cavity 10 are provided in at least the plate members located at the side of the case 1 among the plurality of plate members, and the cavity 10 of the plate member extends along the length and/or width direction of the battery pack 100. The plate of the side part of the box body 1 of the battery pack 100 is provided with the cavity 10, namely the plate is of a frame structure, so that the strength of the plate is improved; the plates at the side part of the box body 1 are provided with the cavity 10, so that the box body 1 of the battery pack 100 has larger structural strength and better structural integrity, and has better protection effect on the battery core 3 in the battery pack 100; compared with the prior art, the plate with the cavity 10 can improve the strength of the box body 1, reduce the mass of the box body 1, further reduce the mass of the battery pack 100, and facilitate the bearing and mounting of the battery pack 100.

Specifically, in the present embodiment, the battery pack 100 includes the side plates 11, the front side plate 13, and the rear side plate 14 of the side portions, and the cover plate 17 and the bottom plate 18 respectively located on the upper and lower sides of the battery pack 100, wherein the side plates 11, the front side plate 13, the rear side plate 14, and the bottom plate 18 each have the cavity 10, the cavities 10 of the front side plate 13 and the rear side plate 14 extend in the width direction of the battery pack 100, the cavities 10 of the side plates 11 and the bottom plate 18 extend in the length direction of the battery pack 100, and the cover plate 17 is less in stress due to the main function of covering, and the cavities 10 are not provided. In other alternative embodiments, all the plate members of the battery pack 100 may be provided with the cavity 10, or only a part of the plate members may be selected to provide the cavity 10, and the extending direction of the cavity 10 is not limited to the present embodiment.

In this embodiment, the die cavity 10 of plate link up the both ends of plate, can furthest's reduction plate's quality, and then lighten the quality of battery package 100, make things convenient for the bearing and the transportation of battery package 100, and the structure atress that the setting of link up of die cavity 10 also is favorable to the plate inside is more even simultaneously, and then improves the structural strength of box 1.

In the present embodiment, the plate member includes a locking member 12, the side plate 11 is provided with a first locking hole 121, the locking member 12 is disposed in the cavity 10 of the side plate 11 and corresponds to the first locking hole 121, and the locking member 12 is used to lock the battery pack 100 to the electric vehicle 200 by matching the first locking hole 121 with the locking mechanism 300. The locking piece 12 is arranged in the cavity 10 of the side plate 11, so that the cavity 10 space of the side plate 11 is effectively utilized, meanwhile, the side plate 11 has a certain protection effect on the locking piece 12, and compared with the arrangement scheme that the locking piece 12 is exposed out of the box body 1, the structure arrangement ensures that the appearance of the battery pack 100 is more concise and attractive; the first locking hole 121 is correspondingly arranged with the locking piece 12, so that the locking mechanism 300 of the electric vehicle 200 can conveniently extend into the cavity 10 through the first locking hole 121 and be matched with the locking piece 12, and further the battery pack 100 and the electric vehicle 200 can be locked.

In this embodiment, the locking member 12 includes a hanging plate 122 and a locking shaft 123, the hanging plate 122 is disposed in the cavity 10 of the side plate 11, a second locking hole 124 is disposed on the hanging plate 122, the second locking hole 124 is disposed corresponding to the first locking hole 121, and the locking shaft 123 is disposed in the second locking hole 124 and connected to the hanging plate 122. The hanging plate 122 is convenient for installing the lock shaft 123, the lock shaft 123 can be installed in the second locking hole 124 of the hanging plate 122 in advance, and then the whole hanging plate 122 is installed in the cavity 10 of the side plate 11, so that the installation efficiency of the lock shaft 123 is improved; when the lock shaft 123 needs to be checked and replaced, the whole hanging plate 122 can be conveniently detached, and then the lock shaft 123 in the hanging plate 122 is checked and replaced; meanwhile, the second locking hole 124 is provided corresponding to the first locking hole 121, so that the locking mechanism 300 is conveniently inserted therein and engaged with the locking shaft 123 to complete the locking of the battery pack 100. Specifically, in the present embodiment, the first locking hole 121 and the second locking hole 124 are rectangular holes, and the cross sections of the first locking hole 121 and the second locking hole 124 are the same, so that the two holes vertically correspond to each other without obstruction, so that the locking shaft 123 and the locking mechanism 300 on the electric vehicle 200 can be conveniently locked in a matching manner.

In this embodiment, the opposite side walls of the second locking hole 124 are correspondingly provided with first mounting holes 125, and two ends of the lock shaft 123 respectively penetrate through the two first mounting holes 125 that are oppositely arranged. Two ends of the lock shaft 123 respectively penetrate through the two first mounting holes 125, so that the mounting firmness of the lock shaft 123 is ensured, and meanwhile, the stress area between the lock shaft 123 and the hanging plate 122 is increased; after the lock shaft 123 cooperates with the locking mechanism 300 to complete locking of the battery pack 100, the battery pack 100 is hung on the bottom of the electric vehicle 200 through the lock shaft 123; the above structure makes the stress at the two ends of the lock shaft 123 more uniform, and the bearing capacity is larger, which is beneficial to the battery pack 100 with larger bearing quality. Specifically, in this embodiment, the first mounting holes 125 are disposed on two sides of the second locking hole 124 in the length direction, so that the lock shaft 123 extends along the width direction of the second locking hole 124, which is convenient for the matching installation of two ends of the lock shaft 123 and the second locking hole 124, and is beneficial to increasing the installation firmness of the lock shaft 123.

In other alternative embodiments, at least one end of the lock shaft 123 extends out of the hanging plate 122, and the extending end of the lock shaft 123 is provided with a first limiting portion to limit the lock shaft 123 from being separated from the hanging plate 122. The lock shaft 123 is limited to the hanging plate 122 by the first limiting part of the extending end of the lock shaft 123, so that the lock shaft 123 is prevented from being separated from the first mounting hole 125 of the hanging plate 122, the mounting firmness of the lock shaft 123 is improved, the locking firmness of the battery pack 100 and the electric vehicle 200 is further improved, and the first limiting part can be a limiting pin penetrating through the lock shaft 123, a limiting ring located on the periphery of the lock shaft 123 and the like.

In this embodiment, a plurality of lock shafts 123 are disposed on the hanging plate 122 at intervals along the extending direction of the hanging plate 122. The hanging plate 122 is provided with a plurality of lock shafts 123, and correspondingly can be connected with different locking mechanisms 300 on the electric vehicle 200, so that the stress of the battery pack 100 is more uniform, the locking stability of the battery pack 100 is improved, and the relative displacement between the battery pack 100 and the electric vehicle 200 is avoided.

In the embodiment, along the extending direction of the hanging plate 122, two ends of the hanging plate 122 are respectively provided with a limiting member, and the limiting members are connected to the side plate 11 to prevent the hanging plate 122 and the side plate 11 from generating relative displacement. The extending direction of the hanging plate 122, that is, the direction in which the hanging plate 122 is inserted into the side plate 11, is along this direction, the limiting pieces are arranged at the two ends of the hanging plate 122 to limit the hanging plate 122, so that the hanging plate 122 can be prevented from slipping off the side plate 11, and the installation firmness of the hanging plate 122 is ensured. In other alternative embodiments, a stopper may be connected to both ends of the hanger plate 122 to restrict the hanger plate 122 from being displaced in the longitudinal direction of the side plate 11.

In this embodiment, the bottom surface of the side plate 11 is further provided with a guide hole, the inner peripheral wall of the guide hole is provided with a guide ring 127, the material rigidity coefficient of the guide ring 127 is greater than that of the side plate 11, and the guide hole is used for positioning with the battery changing device for supporting the battery pack 100. The inner peripheral wall of the guide hole is provided with the guide ring 127, so that the guide piece 22 of the battery pack 100 can be directly contacted with the guide ring 127 with larger material rigidity coefficient when being positioned with the battery replacement equipment, and the guide piece 22 is prevented from being contacted with the hole wall of the guide hole, so that larger abrasion is generated on the hole wall of the guide hole.

In this embodiment, a connecting ring 128 is further disposed between the guide hole and the guide ring 127, the inner peripheral walls of the openings at two ends of the connecting ring 128 are both provided with a clamping groove 1281, the outer peripheral walls of the openings at two ends of the guide ring 127 are both provided with a protruding portion 1271, and the guide ring 127 is connected to the inner peripheral wall of the connecting ring 128 through the cooperation of the protruding portion 1271 and the clamping groove 1281. The connecting ring 128 between the guide ring 127 and the guide hole plays a role in connection on one hand, and on the other hand, the conduction of the acting force of the guide ring 127 on the guide hole can be buffered, so that the damage to the hole wall of the guide hole is further avoided; and the guide ring 127 and the connecting ring 128 are connected in a mode that the clamping groove 1281 and the protruding part 1271 are matched, so that the structure is simple, and the connection is firm. Specifically, in the present embodiment, the connecting ring 128 is made of a composite material with a certain elasticity, so that the acting force of the guide member 22 of the battery exchange device on the guide ring 127 can be buffered more effectively, and the abrasion to the wall of the guide hole is reduced.

In this embodiment, the bottom surface of the side plate 11 is provided with a main guide hole 1261 and an auxiliary guide hole 1262, the main guide hole 1261 is a circular hole, and the auxiliary guide hole 1262 is a kidney-shaped hole. The main guide hole 1261 is a circular hole, so that the positioning requirement between the main guide hole and the guide piece 22 of the battery exchange equipment is high, and the positioning accuracy is ensured; the auxiliary guide hole 1262 is a kidney-shaped hole and can be used for preliminary positioning of the battery pack 100, and meanwhile, the auxiliary guide hole 1262 has a certain tolerance for positioning of the battery pack 100, so that the battery pack 100 can be positioned more conveniently and rapidly.

In this embodiment, two ends of the front side plate 13 and the rear side plate 14 of the case 1 are respectively connected through the side plate 11, a groove 15 is disposed on one side of the front side plate 13 and the rear side plate 14 connected with the side plate 11, and the cross section of the groove 15 and the cross section of the hanging plate 122 are adapted so that the hanging plate 122 can penetrate into the cavity 10 of the side plate 11 from the groove 15. The front side plate 13, the rear side plate 14 and the side plates 11 on two sides are jointly enclosed to form a frame type peripheral side structure of the box body 1, so that the overall strength of the box body 1 is improved; the recess 15 of preceding curb plate 13 and posterior lateral plate 14 sets up, makes things convenient for link plate 122 to penetrate and install in the die cavity 10 of limit curb plate 11, and when link plate 122 need inspect or change, only need take it out from the die cavity 10 of limit curb plate 11 through recess 15 can, and need not unpack whole box 1, very big the dismouting of having made things convenient for link plate 122.

In this embodiment, the case 1 further includes a plurality of intermediate partitions 16 disposed at intervals, the intermediate partitions 16 extend in the lateral direction of the case 1, and two ends of the intermediate partitions 16 are respectively connected to side plates 11 on two sides of the case 1. The middle partition plate 16 divides the inner space of the box body 1 of the battery pack 100 into a plurality of areas, so that the inner space of the battery pack 100 is conveniently subjected to functional partition, meanwhile, the middle partition plate 16 is connected with the side plate 11 of the battery pack 100, structural support is formed in the box body 1, and the overall strength of the box body 1 is further enhanced. In other alternative embodiments, the middle barrier 16 may extend in the longitudinal direction of the case 1, or the middle barrier 16 may be provided in a staggered manner, extending in the transverse direction of the case 1 and extending in the longitudinal direction of the case 1.

In the present embodiment, the side plate 11 has a stepped portion 111 extending toward the inside of the case 1, and both ends of the intermediate partition plate 16 are provided with engagement grooves 161, respectively, and the engagement grooves 161 are engaged with the stepped portion 111 in a matching manner. The step portion 111 of the side plate 11 can further improve the overall structural strength of the side plate 11, and the step portion 111 is matched with the clamping grooves 161 at two ends of the middle partition plate 16 to strengthen the connection with the middle partition plate 16, so that the overall structural strength of the box 1 is improved. In other alternative embodiments, the middle partition 16 and the side plate 11 may be connected by a bolt, and the present invention is not limited thereto.

In this embodiment, the battery pack 100 further includes an unlocking mechanism 2, where the unlocking mechanism 2 is installed in the cavity 10 of the side plate 11 and penetrates through the side plate 11 in the vertical direction, and the unlocking mechanism 2 is used to make an extending motion relative to the case 1 under the action of an external force and acts on the locking mechanism 300 to unlock the battery pack 100 from the electric vehicle 200. The unlocking mechanism 2 is arranged in the cavity 10 of the side plate 11, so that the cavity 10 space of the side plate 11 is effectively utilized, meanwhile, the side plate 11 has a certain protection effect on the unlocking mechanism 2, and compared with the arrangement scheme that the unlocking mechanism 2 is exposed out of the box body 1, the battery pack 100 is more concise and attractive in appearance due to the arrangement of the structure; meanwhile, the unlocking structure is convenient for unlocking the battery pack 100 and the electric vehicle 200, and is beneficial to improving the power conversion efficiency. Specifically, in this embodiment, an unlocking cylinder 112 extending in the vertical direction is disposed in the side plate 11, and two ends of the unlocking cylinder 112 are opened for penetrating the unlocking mechanism 2, so that the unlocking mechanism 2 has a certain limiting and protecting effect.

In this embodiment, the side plate 11 is further provided with a first unlocking hole 1291, the hanging plate 122 is further provided with a second unlocking hole 1292 corresponding to the first unlocking hole 1291, and the unlocking mechanism 2 is disposed through the first unlocking hole 1291 and the second unlocking hole 1292 and is used for performing a stretching motion relative to the first unlocking hole 1291 and the second unlocking hole 1292 under the action of an external force. The second unlocking hole 1292 on the hanging plate 122 and the first unlocking hole 1291 on the side plate 11 are correspondingly arranged, so that the unlocking mechanism 2 can conveniently extend out relative to the box body 1 and act on the locking mechanism 300, and the battery pack 100 is unlocked from the electric vehicle 200; meanwhile, the first unlocking hole 1291 and the second unlocking hole 1292 have a certain guiding effect on the motion of the unlocking mechanism 2, so that the accurate alignment of the unlocking mechanism 2 and the locking mechanism 300 is ensured, and the unlocking precision and the unlocking efficiency are improved. Specifically, in the present embodiment, the first unlocking hole 1291, the second unlocking hole 1292, and the hollow portion of the unlocking cylinder 112 are provided so as to penetrate in the vertical direction, so that the installation and the operation of the unlocking mechanism 2 are facilitated.

In this embodiment, the unlocking mechanism 2 includes an unlocking rod assembly and a mounting assembly, the mounting assembly is sleeved on the outer peripheral side of the unlocking rod assembly and is connected with the hanging plate 122, and the unlocking rod assembly is arranged through the first unlocking hole 1291 and the second unlocking hole 1292 in a penetrating manner and is used for making an extending movement relative to the first unlocking hole 1291 and the second unlocking hole 1292 under the action of an external force. The installation component makes things convenient for release mechanism 2 to be connected with link 122, improves release mechanism 2's installation fastness, and the periphery side of release lever subassembly is located to the installation component cover simultaneously, has certain guide effect to the extension motion of release lever subassembly, is favorable to improving release lever subassembly and locking mechanism 300 accuracy of counterpoint, and then improves the unblock efficiency between battery package 100 and the electric vehicle 200.

In this embodiment, the mounting assembly includes a connecting member 21, the connecting member 21 is connected to the hanging plate 122, and the connecting member 21 is embedded in the inner peripheral wall of the unlocking lever assembly and the first unlocking hole 1291. The unlocking mechanism 2 is connected to the hanging plate 122 through the connecting piece 21, the connection firmness of the unlocking mechanism 2 is improved, the connecting piece 21 is embedded in the inner peripheral wall of the guide piece 22 and the first unlocking hole 1291, the space of the first unlocking hole 1291 is effectively utilized, and the structure is more compact. Specifically, in the present embodiment, the connecting member 21 is a plate-shaped member, the connecting member 21 is provided with a connecting hole 211, and the connecting member 21 is connected to the hanging plate 122 through the connecting bolt 27 and the connecting hole 211.

In this embodiment, the mounting assembly further includes a guide 22, and the guide 22 is sleeved on the outer circumferential side of the unlocking lever assembly and connected with the connecting member 21. The guide member 22 has a certain guiding function on the movement of the unlocking lever assembly, which is beneficial to improving the alignment precision of the unlocking lever assembly and the locking mechanism 300, and further improving the unlocking efficiency between the battery pack 100 and the electric vehicle 200.

In this embodiment, the unlocking mechanism 2 further includes an elastic member 23, two ends of the elastic member 23 are respectively abutted to the mounting component and the unlocking rod component, and the elastic member 23 is used for providing a force in opposite directions when the unlocking rod component makes an extending motion relative to the mounting component. When the unlocking rod assembly performs extending movement relative to the mounting assembly, the elastic piece 23 abutting between the unlocking rod assembly and the mounting assembly is continuously further compressed, so that the extending movement of the unlocking rod assembly can be buffered, and the rigid collision between the unlocking rod assembly and the locking mechanism 300 is avoided; after the extension movement of the unlocking lever assembly is completed to unlock the battery pack 100 and the external force is removed, the unlocking lever assembly can be automatically reset to the initial state under the restoring force of the elastic member 23.

In this embodiment, the unlocking rod assembly includes a first unlocking rod 24 and a second unlocking rod 25 that are rigidly connected, the diameter of the first unlocking rod 24 is larger than that of the second unlocking rod 25, and the first unlocking rod 24 is used for pushing the second unlocking rod 25 to make an extending motion relative to the case 1 under the action of an external force. The first unlocking rod 24 directly bears the action of external force, and the diameter of the first unlocking rod is set larger, so that the stressed area of the stressed end can be increased, and the extending movement is more stable; meanwhile, the unlocking rod assembly consists of a first unlocking rod 24 and a second unlocking rod 25, namely, the structural parts are further detached, and the unlocking rod assembly is convenient to install in the box body 1. Specifically, in the present embodiment, two ends of the elastic member 23 are respectively abutted between two opposite end surfaces of the guide member 22 and the first unlocking lever 24, and a plurality of cross-sectional portions of the first unlocking lever relative to the second unlocking lever 25 are utilized, so that the structure is more compact.

In this embodiment, a mounting groove 241 and a second mounting hole 242 are disposed at one end of the first unlocking rod 24 near the second unlocking rod 25, the mounting groove 241 extends along the axial direction of the first unlocking rod 24, the second mounting hole 242 extends along the radial direction of the first unlocking rod 24 and penetrates the first unlocking rod 24, and the second unlocking rod 25 is partially sleeved in the mounting groove 241 and is connected to the first unlocking rod 24 through the positioning pin 26 and the second mounting hole 242. The first unlocking rod 24 is partially sleeved in the mounting groove 241 of the second unlocking rod 25, and the mounting groove 241 has a certain limiting function, so that the second unlocking rod 25 is ensured not to deviate in the process of being pushed by the first unlocking rod 24; the first unlocking rod 24 and the second unlocking rod 25 are connected through the positioning pin 26, the connection mode is simple, the operation is convenient, and the rigid connection between the first unlocking rod 24 and the second unlocking rod 25 is effectively ensured.

In this embodiment, the second unlocking lever 25 includes a first lever section 251 and a second lever section 252, the second lever section 252 is sleeved in the guide member 22, the diameter of the second lever section 252 is larger than that of the first lever section 251, the inner peripheral wall of the guide member 22 is provided with a second limiting portion 221 protruding inwards, and the second limiting portion 221 abuts against the end face of the second lever section 252, which is close to the first lever section 251. The diameter of the second rod section 252 is larger than that of the first rod section 251, so that the end face of one end of the second rod section 252 connected with the first rod section 251 is larger, part of the end face is exposed, the second rod section 252 is conveniently abutted with the second limiting part 221 of the guide piece 22, and further the second rod section 252 is limited in the guide piece 22, so that the limiting connection of a lock rod assembly and an installation assembly is realized, the connection mode is simple, and the installation is easy; meanwhile, the second rod section 252 is positioned inside the guide piece 22, and the second rod section 252 and the guide piece have larger guide areas, so that the guide function of the guide piece 22 on the extending movement of the unlocking rod assembly can be fully exerted.

In this embodiment, the battery pack 100 further includes a box-end electrical connector 4 and a water connector 5, the box-end electrical connector 4 and the water connector 5 are both disposed on a plate of the battery pack 100, the box-end electrical connector 4 is used for electrically connecting with a car-end electrical connector of the electric vehicle 200, and the water connector 5 is used for connecting with a waterway system of the electric vehicle 200 to liquid-cool the battery pack 100. The plate on the periphery of the battery pack 100 has greater strength due to the arrangement of the cavity 10, so that greater bearing capacity can be provided for connection with the box-end electric connector 4 and the water connector 5, and the stability of connection is ensured; the box-end electric connector 4 is convenient to electrically connect with the car-end electric connector of the electric vehicle 200 so as to supply power to the electric vehicle 200; the water connector 5 is connected with the waterway system of the electric vehicle 200, so that the temperature of the battery pack 100 is conveniently reduced in a liquid cooling mode, and the use safety of the battery pack 100 is ensured.

The embodiment also discloses an electric vehicle 200, and the electric vehicle 200 firmly locks the battery pack 100 on the electric vehicle 200 through the locking mechanism 300, and meanwhile, as the peripheral side plate of the box body 1 of the battery pack 100 is provided with the cavity 10, the structural strength of the whole battery pack 100 is increased, and meanwhile, the quality of the battery pack 100 is lightened, so that the battery pack 100 is convenient to be installed on the electric vehicle 200.

Specifically, the locking mechanism 300 in the present embodiment may employ a structure as shown in fig. 19 and 20. In fig. 19 and 20, the upper view shows a locked state, and the lower view shows an unlocked state. Locking mechanism 300 includes lock connecting rod 320 and a plurality of lock base 310, lock base 310 has seted up locking groove 340, at least some lock base 310 is equipped with spring bolt 330, spring bolt 330 movable mounting is in locking groove 340 and can prevent that lock axle 123 from breaking away from locking groove 340, lock connecting rod 320 passes through spring bolt 330 and lock base 310 swing joint, the bottom of lock connecting rod 320 has the unblock face 321 that extends along lock connecting rod 320 length direction, first unlocking lever 24 supports under the effect of external force and leans on in unblock face 321 and jack-up lock connecting rod 320, thereby drive spring bolt 330 and open locking groove 340.

In the unlocking process, firstly, the external unlocking device acts on the first unlocking rod 24 and drives the lock shaft 123 to move in the horizontal direction for a preset distance in the locking groove 340, so that the lock shaft 123 is separated from the lock tongue 330, interference between the lock shaft 123 and the lock tongue 330 is prevented when the lock tongue 330 is opened, in the horizontal movement process, the external unlocking device is abutted against the first unlocking rod 24, and the elastic piece 23 is compressed under the action of the first unlocking rod 24; meanwhile, the first unlocking rod 24 drives the second unlocking rod 25 to jack up, and in the process that the second unlocking rod 25 jacks up the locking connecting rod 320, the top end of the second unlocking rod 25 horizontally slides along the unlocking surface 321 and always abuts against the unlocking surface.

Specifically, both ends of the locking bolt 330 are hinged to the lock base 310 and the lock link 320, and the locking bolt 330 rotates during the lifting of the lock link 320, so that the space of the locking groove 340 is opened, and the lock shaft 123 can be horizontally moved out to the right. At the same time, the lock base 310 remains fixed, so that the movement trace of the lock link 320 does not translate linearly, but moves horizontally to the right in fig. 19 and 20 while moving upward. The second unlocking lever 25 is moved only upwards during this process, and thus the position in the horizontal direction with respect to the lock link 320 is also changed. In the process that the lock shaft 123 moves horizontally to the right in the locking groove 340, the second unlocking lever 25 always abuts against the unlocking surface 321, so that the lock tongue 330 is kept in an open state, the lock shaft 123 is ensured to move smoothly from the locking groove 340, and the unlocking reliability is improved.

While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the utility model is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the utility model, but such changes and modifications fall within the scope of the utility model.

Claims (25)

1. The utility model provides a battery package for through locking mechanism lock in electric vehicle, the battery package include the box with set up in electric core in the box, its characterized in that, the box is enclosed by a plurality of plates and is established and form, a plurality of in the plate, be located at least the plate of box lateral part is equipped with a plurality of die cavities, the die cavity of plate is followed the length and/or the width direction extension of battery package.

2. The battery pack of claim 1, wherein the cavity of the plate member penetrates both ends of the plate member.

3. The battery pack according to claim 1, wherein the plate member includes a side plate provided with a first locking hole and a locking member provided in a cavity of the side plate in correspondence with the first locking hole, the locking member being for locking the battery pack to the electric vehicle by cooperation of the first locking hole and the locking mechanism.

4. The battery pack of claim 3, wherein the locking member comprises a hanging plate and a locking shaft, the hanging plate is arranged in the cavity of the side plate, a second locking hole is formed in the hanging plate, the second locking hole is arranged corresponding to the first locking hole, and the locking shaft is arranged in the second locking hole and connected with the hanging plate.

5. The battery pack according to claim 4, wherein first mounting holes are correspondingly formed in two opposite side walls of the second locking hole, and two ends of the locking shaft respectively penetrate through the two oppositely arranged first mounting holes.

6. The battery pack of claim 5, wherein at least one end of the lock shaft extends out of the hanging plate, and the extended end of the lock shaft is provided with a first limiting portion to limit the lock shaft from being separated from the hanging plate.

7. The battery pack of claim 4, wherein at least two of the lock shafts are provided at intervals along the extension direction of the hanging plate.

8. The battery pack according to claim 4, wherein the hanging plate is provided with a limiting member at each end thereof along the extending direction of the hanging plate, and the limiting member is connected to the side plate or the hanging plate to prevent the relative displacement between the hanging plate and the side plate.

9. The battery pack according to claim 3, wherein the bottom surface of the side plate is further provided with a guide hole, the inner peripheral wall of the guide hole is provided with a guide ring, the material rigidity coefficient of the guide ring is larger than that of the side plate, and the guide hole is used for positioning a battery replacement device for supporting the battery pack.

10. The battery pack according to claim 9, wherein a connecting ring is further arranged between the guide hole and the guide ring, clamping grooves are formed in inner peripheral walls of openings at two ends of the connecting ring, protruding portions are formed in outer peripheral walls of openings at two ends of the guide ring, and the guide ring is connected to the inner peripheral walls of the connecting ring through the protruding portions and the clamping grooves.

11. The battery pack according to claim 9, wherein the bottom surface of the side plate is provided with a main guide hole and an auxiliary guide hole, the main guide hole being a circular hole, and the auxiliary guide hole being a kidney-shaped hole.

12. The battery pack according to claim 4, wherein the case further comprises a front side plate and a rear side plate, both ends of the front side plate and the rear side plate are respectively connected through the side plates, grooves are formed in one sides of the front side plate and the rear side plate, which are connected with the side plates, and the grooves are adapted to the cross sections of the hanging plates so that the hanging plates can penetrate into the cavities of the side plates from the grooves.

13. The battery pack of claim 3, wherein the case further comprises a plurality of intermediate partitions arranged at intervals, the intermediate partitions extending in the transverse direction of the case, and both ends of the intermediate partitions being connected to the side plates on both sides of the case, respectively.

14. The battery pack according to claim 13, wherein the side plate has a stepped portion extending toward the inside of the case, and both ends of the middle separator are respectively provided with engaging grooves, the engaging grooves being engaged with the stepped portion.

15. The battery pack of claim 4, further comprising an unlocking mechanism mounted in the cavity of the side plate, the unlocking mechanism being adapted to extend relative to the housing under an external force and to act on the locking mechanism to unlock the battery pack from the electric vehicle.

16. The battery pack of claim 15, wherein the side plate is further provided with a first unlocking hole, the hanging plate is further provided with a second unlocking hole corresponding to the first unlocking hole, and the unlocking mechanism is arranged through the first unlocking hole and the second unlocking hole and is used for performing extension movement relative to the first unlocking hole and the second unlocking hole under the action of external force.

17. The battery pack of claim 16, wherein the unlocking mechanism comprises an unlocking rod assembly and a mounting assembly, the mounting assembly is sleeved on the outer peripheral side of the unlocking rod assembly and is connected with the hanging plate, and the unlocking rod assembly is arranged through the first unlocking hole and the second unlocking hole in a penetrating mode and is used for performing extending movement relative to the first unlocking hole and the second unlocking hole under the action of external force.

18. The battery pack of claim 17, wherein the mounting assembly includes a connector connected to the hanger plate, and the connector is embedded in the unlocking lever assembly and the inner peripheral wall of the first unlocking hole.

19. The battery pack of claim 18, wherein the mounting assembly further comprises a guide member that is sleeved on an outer circumferential side of the unlocking lever assembly and is connected to the connecting member.

20. The battery pack of claim 17, wherein the unlocking mechanism further comprises an elastic member, two ends of the elastic member respectively abut against the mounting assembly and the unlocking lever assembly, and the elastic member is used for providing a force in opposite directions when the unlocking lever assembly makes an extending movement relative to the mounting assembly.

21. The battery pack of claim 19, wherein the unlocking lever assembly comprises a first unlocking lever and a second unlocking lever rigidly connected, the first unlocking lever having a diameter greater than a diameter of the second unlocking lever, the first unlocking lever being configured to urge the second unlocking lever to extend relative to the housing under an external force.

22. The battery pack of claim 21, wherein an end of the first unlocking lever adjacent to the second unlocking lever is provided with a mounting groove and a second mounting hole which are communicated, the mounting groove extends along the axial direction of the first unlocking lever, the second mounting hole extends along the radial direction of the first unlocking lever and penetrates through the first unlocking lever, and the second unlocking lever is partially sleeved in the mounting groove and is connected with the first unlocking lever through a positioning pin and the second mounting hole.

23. The battery pack of claim 21, wherein the second unlocking lever comprises a first lever section and a second lever section, the second lever section is sleeved in the guide member, the diameter of the second lever section is larger than that of the first lever section, the inner peripheral wall of the guide member is provided with a second limiting part protruding inwards, and the second limiting part is abutted with the end face, close to the first lever section, of the second lever section.

24. The battery pack of claim 1, further comprising a tank side electrical connector and/or a water connector, the tank side electrical connector and the water connector being disposed on the plate of the battery pack, the tank side electrical connector being for electrical connection with a vehicle side electrical connector of the electric vehicle, the water connector being for connection with a waterway system of the electric vehicle to liquid cool the battery pack.

25. An electric vehicle comprising a locking mechanism, wherein the electric vehicle further comprises the battery pack of any one of claims 1-24, the battery pack being locked to the electric vehicle by the locking mechanism.