CN216928749U - Quick-change battery box - Google Patents

Abstract

The utility model discloses a quick-change battery box, which comprises: the box body inner container comprises a bottom plate; the battery cells are adhered to the bottom plate; the bottom protection plate is arranged at the bottom of the quick-change battery box, and a buffer cavity is formed between the bottom protection plate and the bottom plate. According to the quick-change battery box provided by the utility model, the battery core is directly bonded to the bottom plate, so that the fixing effect of the battery core can be realized, the strength of the bottom plate can be increased, meanwhile, in order to avoid the situation that the battery box is easy to directly damage the battery core due to bottom collision during installation, the bottom protection plate is additionally arranged on the battery box, and a hollow buffer cavity is formed between the bottom protection plate and the bottom plate, so that the bottom plate can be protected from direct impact, and the damage of the battery core is avoided.

Description

Quick-change battery box

Technical Field

The utility model relates to the field of battery replacement stations, in particular to a quick-change battery box.

Background

At present, an electric automobile mainly provides energy through a quick-change battery box structure (a battery pack), and the electric automobile can take down the battery pack in a battery changing station for charging and change the battery pack with a new battery pack for continuous power supply.

The quick-change battery box in the prior art comprises a battery box, a quick-change mechanism, an electric connector, a sealing gasket, a box cover, a battery core and the like. The battery core is used for providing electric energy and is arranged in the battery box.

Electric core among the prior art holds electric core in the module through a modular assembly, installs in the battery box, and a plurality of electric core integrations form the battery module in the module, and the battery module is installed on the module roof beam of battery box, need leave certain clearance between battery module and battery package bottom plate, play the absorbing effect of buffering. The module itself cannot be connected to the base plate but is placed on a cross beam provided on the base plate of the cabinet. The battery pack has a complex module structure, high installation requirements, and higher weight and cost. Meanwhile, the bottom plate is not high in strength and is easy to deform.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of overcoming the defects that the weight and the cost of a battery box are higher due to the complex structure and high installation requirement of a battery module in the prior art, and provides a quick-change battery box.

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

a quick-change battery box is characterized by comprising:

the box body inner container comprises a bottom plate;

the battery cells are adhered to the bottom plate;

the bottom protection plate is arranged at the bottom of the quick-change battery box, and a buffer cavity is formed between the bottom protection plate and the bottom plate.

In this scheme, electric core direct bonding in bottom plate, can be in order to realize the fixed effect of electric core, can increase the intensity of bottom plate again, simultaneously, in order to avoid battery box bottom to suffer the easy direct damage electric core of collision when the installation, backplate at the bottom of additionally installing on the battery box forms hollow cushion chamber between backplate and the bottom plate at the bottom, can protect the bottom plate not receive direct impact, avoids electric core impaired.

Preferably, a support beam is arranged between the bottom guard plate and the bottom plate and is used for connecting and supporting the bottom guard plate and the bottom plate.

In the scheme, the supporting beam is used for connecting the bottom guard plate and the bottom plate and supporting the buffer cavity between the bottom guard plate and the bottom plate.

Preferably, the support beam is provided with a first threaded hole, and the bottom guard plate is mounted in the first threaded hole through a threaded connecting piece.

In this scheme, a supporting beam carries out fixed connection through threaded connection mode and end backplate, and simple process joint strength is high.

Preferably, the surface of the bottom guard plate, which faces away from the bottom plate, is provided with a recessed portion, and the recessed portion extends towards the bottom plate.

In this scheme, the depressed part is used for holding a supporting beam, makes the backplate plastic deformation improve its intensity through sunken simultaneously.

Preferably, a second threaded hole is formed in the recessed portion, and the second threaded hole is used for connecting and fixing the threaded connecting piece so as to connect the bottom protection plate and the bottom plate.

In this aspect, the recessed portion is provided with a threaded hole, so that the support beam can be disposed in the recessed portion.

Preferably, the side portions of the plurality of cells are fixed to the bottom plate through cell end plates.

In this scheme, come further fixed electric core from the side through setting up electric core end plate.

Preferably, the cell end plate is disposed at a side portion of a cell sub-module formed by combining a plurality of cells.

In this scheme, a plurality of electric cores form electric core submodule piece together through setting up in the electric core end plate of its lateral part is fixed.

Preferably, the cell end plate is provided with a terminal guard plate for setting a positive output end or a negative output end of the cell submodule.

In this scheme, can need not additionally to set up other connection structure on electric core submodule piece through setting up the terminal backplate on electric core, make electric core submodule piece's structure simpler.

Preferably, a fixed cavity is arranged in the electric core end plate and used for clamping the terminal protection plate, and the positive output end or the negative output end is arranged in the fixed cavity.

In this scheme, the fixed chamber of seting up on the electric core end plate can reduce the weight of electric core end plate when playing and holding the fixed action.

Preferably, the cell end plate is provided with a connecting hole for connecting and fixing the cell end plate and the bottom plate.

In this scheme, offer the connecting hole on the electric core end plate and can make its convenient with bottom plate location and be connected.

Preferably, the cell submodule is fixed to the cell end plate through a steel belt or a plastic belt.

In this scheme, bind electric core end plate and electric core fixedly through steel band or plastic tape, can make electric core end plate compress tightly electric core, play fixed while, also can avoid electric core in use to produce the swell phenomenon to a certain extent.

Preferably, the cell end plate includes a hollow groove, and the hollow groove penetrates through two side surfaces of the cell end plate.

In this scheme, well cavity has been seted up at the middle part of electric core end plate, and this well cavity link up electric core end plate, can strengthen the intensity of this electric core end plate under the less prerequisite of intensity loss.

Preferably, the battery cells in the battery cell sub-modules are mutually bonded and fixed.

In this scheme, the fixed intensity that can further promote a plurality of electric core groups of gluing each other between the electricity core avoids electric core to produce the displacement in the use, warp or deviate from the electric core group.

Preferably, the bottom plate comprises a plurality of arrangement surfaces, and the plurality of battery cells are adhered to the plurality of arrangement surfaces.

In this scheme, be provided with a plurality of planes of placeeing on the bottom plate, the shape and the size of plane of placeeing and the electric core group phase-match after electric core bonding for the connection effect of electric core and bottom plate is better.

Preferably, the box body liner is provided with a partition part, and the partition part divides the bottom plate into a plurality of areas to form the arrangement surface.

In this scheme, the partition part is divided into a plurality of regions with the bottom plate, and the size and the shape in every region all match with the electric core group size after the bonding, and the bottom plate region after the partition is promptly for the plane of arrangement, and electric core submodule piece then just sets up on the plane of arrangement for the assembly of electric core and bottom plate is easier, and the connection effect is also better.

Preferably, the battery cell is clamped between the separating parts.

In this scheme, electric core card is established between the partition portion, can further press from both sides tight fixedly with electric core through the partition portion, also can prevent electric core bulge when improving electric core connection effect.

Preferably, the partition part comprises a cross beam and a longitudinal beam, and the cross beam and the longitudinal beam are respectively arranged on the bottom plate along the transverse direction and the longitudinal direction to partition the bottom plate to form the arrangement surface.

In this scheme, the partition part comprises crossbeam and longeron, and a plurality of crossbeams and longeron run through the bottom plate respectively along horizontal and vertically, play fixed electric core. The overall strength of the battery pack is enhanced while the arrangement surfaces are separated, and the bearing capacity of the battery pack is enhanced, so that the battery pack is not easy to deform in use.

Preferably, step surfaces are arranged on the cross beam and/or the longitudinal beam, and threaded holes are formed in the step surfaces and used for being in threaded connection with the battery cell end plate.

In this scheme, through with the step face threaded connection on electric core end plate and the crossbeam or the longeron, on being fixed in the bottom plate with electric core from the lateral part, avoid electric core to take place to rock.

Preferably, the upper surface of the bottom plate protrudes upward to form a joint part, and the joint part corresponds to the bottom surface of the battery core.

In this scheme, the upper surface of bottom plate is upwards protruding, forms the molding face that corresponds with electric core bottom surface for the connection effect of electric core and bottom plate is better. Meanwhile, the bottom plate can also enhance the rigidity and the strength of the bottom plate through the concave-convex plastic deformation of the toilet surface, so that the bending resistance of the bottom plate is improved, and the battery cell is better protected.

Preferably, the battery cell is adhered to the bottom plate in a gluing manner.

In this scheme, electric core bonds on the bottom plate, has also further strengthened the intensity of bottom plate when can improving electric core self steadiness.

Preferably, the quick-change battery box further comprises a reinforcing part, and the box body liner is fixed in the quick-change battery box through the reinforcing part.

In this scheme, the reinforcing part supports the box inner bag and is fixed in the quick change battery box with the box inner bag in, can strengthen the intensity of whole battery box, and the internal courage of protection box is difficult for receiving the external force deformation to electric core in the protection battery box.

Preferably, the reinforcement part comprises an inner reinforcement part and an outer reinforcement part;

the outer reinforcing part is arranged around the inner container of the box body and is attached to the outer side of the edge of the inner container of the box body;

the inner reinforcing part is arranged at the bent part at the inner side of the edge of the inner container of the box body.

In the scheme, the outer reinforcing part is in a frame shape, is arranged around the periphery of the box body inner container and wraps the edge of the box body inner container. And interior rib is a plurality of strengthening ribs, sets up in each bending region and the edge part of the inside of box inner bag, through setting up inside and outside rib, when whole protection box inner bag in the outside, to the position that easily decreases in the box inner bag and intensity lower in the inboard setting strengthening rib key protection for the intensity of box inner bag is higher, is difficult for receiving external force deformation, thereby protects the electric core in the box inner bag.

Preferably, the quick-change battery box further comprises an upper cover, the upper cover covers the box body inner container, a cavity is formed between the upper cover and the box body inner container, and the battery cell is arranged in the cavity.

In this scheme, including upper cover and box inner bag with electric core parcel, protection electric core that can be better is not damaged by external force, improves the security of battery box.

The positive progress effects of the utility model are as follows: the utility model discloses a quick-change battery box, wherein a battery core can be directly attached and fixed on a bottom plate without an additional module, and the battery core attached on the bottom plate further enhances the strength of the bottom plate and is not easy to deform on the premise of reducing the installation requirement, the weight and the cost. The bottom guard plate can also play a role in buffering to avoid damaging the battery cell.

Drawings

Fig. 1 is a schematic diagram of an internal structure of a quick-change battery box with an upper cover removed according to a preferred embodiment of the utility model.

Fig. 2 is a schematic cross-sectional view of the quick-change battery box with the upper cover removed according to a preferred embodiment of the utility model.

FIG. 3 is a schematic diagram of the internal structure of the inner container of the box body according to a preferred embodiment of the utility model.

FIG. 4 is a schematic diagram of the internal structure of the inner container of the box body according to a preferred embodiment of the utility model.

FIG. 5 is a schematic cross-sectional view of the inner container of the container body according to a preferred embodiment of the utility model.

Fig. 6 is a schematic cross-sectional view of a quick-change battery box according to a preferred embodiment of the utility model.

Fig. 7 is a schematic diagram of the overall structure of a quick-change battery box according to a preferred embodiment of the utility model.

Fig. 8 is a schematic structural diagram of an upper cover of a quick-change battery box according to a preferred embodiment of the utility model.

FIG. 9 is a schematic structural view of an outer reinforcement portion according to a preferred embodiment of the present invention.

FIG. 10 is a schematic view of an inner reinforcement structure according to a preferred embodiment of the present invention.

FIG. 11 is a schematic structural diagram of an electrical core module according to a preferred embodiment of the present invention.

Fig. 12 is a schematic structural diagram of a cell end plate according to a preferred embodiment of the utility model.

Description of reference numerals:

inner container 1 of box body

Base plate 11

Setting surface 111

Joint 112

Cell end plate 12

Steel strip 121

Fixed cavity 122

Connecting hole 123

Terminal guard plate 130

Longitudinal beam 131

Cross member 132

Step 133

Battery cell 2

Bottom guard board 3

Support beam 31

Recess 32

Reinforcing part 14

An outer reinforcement portion 141,

Inner reinforcement 142

Upper cover 4

First region 100

Second region 200

Third region 300

Detailed Description

The present invention will be more clearly and completely described in the following description of preferred embodiments, taken in conjunction with the accompanying drawings.

As shown in fig. 1, 2 and 5, the quick-change battery box of this embodiment includes a box inner container 1, an electric core 2 and a bottom protection plate 3, the electric core is disposed in the box inner container, the bottom protection plate 3 is disposed at the bottom of the box inner container 1, the quick-change battery box further includes an upper cover, the upper cover covers the box inner container, and forms a cavity with the box inner container, the electric core is disposed in the cavity, the box inner container 1 includes a bottom plate 11, the bottom of the electric core 2 is bonded to the bottom plate 11, the bottom protection plate 3 is disposed at the bottom of the bottom plate, and a buffer cavity is provided between the bottom protection plate 3 and the bottom plate 11.

Both the bottom plate 11 and the bottom guard plate 3 are formed by punching plates, wherein a supporting beam 31 is arranged between the bottom guard plate 3 and the bottom plate 11, the supporting beam 31 is positioned in the buffer cavity and used for connecting and supporting the bottom guard plate 3 and the bottom plate 11, and the bottom guard plate 3 is connected and supports the bottom plate 11 through the supporting beam 31. But a supporting beam 31 lug weld is on backplate 3 or bottom plate 11 at the bottom, be equipped with first screw hole on supporting beam 31, backplate 3 connects in a first screw hole on supporting beam 31 through threaded connection spare at the bottom, when supporting beam 31 welds on backplate at the bottom 3, threaded connection spare runs through backplate 3 and supporting beam 31 and is connected on bottom plate 11, when supporting beam 31 welds on bottom plate 11, threaded connection spare can run through backplate 3 and threaded connection on a supporting beam at the bottom, backplate 3 surface that deviates from bottom plate 11 at the bottom is equipped with depressed part 32, depressed part 32 is sunken towards the bottom plate, be equipped with the second screw hole in the depressed part 32, supply threaded connection spare to connect fixedly in order to connect backplate at the bottom with bottom plate, threaded connection spare passes backplate 3 and bottom plate 11 at the bottom of the connection, first screw hole is linked together with the second screw hole. In order to realize better support, can set up a plurality of supporting beam 31 in the buffering intracavity, avoid leading to end backplate 3 to take place to warp because of external force, or because of setting up more bottom plate that leads to of electric core and take place to warp in the inner bag.

The bottom of electric core 2 is through the relative fixation that the bonding realized electric core and box inner bag on the bottom plate, can be in order to realize the fixed effect of electric core 2, can increase bottom plate 11's intensity again, simultaneously, in order to avoid battery box bottom to suffer collision directly easily when the installation and harm electric core 2, backplate 3 at the bottom of installing outside the bottom plate, form hollow cushion chamber between backplate 3 and the bottom plate 11 at the bottom, can protect bottom plate 11 not receive the direct impact of external force, avoid electric core 2 impaired. The bottom of the box inner container 1 of this embodiment sets up bottom plate 11, and the periphery of bottom plate 11 is equipped with the curb plate of perpendicular to bottom plate, and the curb plate is equipped with electric connector for realize that the battery box is connected with electric automobile's electricity.

As shown in fig. 1, 2, 6, and 11, the lateral parts of a plurality of cells are fixed on the bottom plate through the cell end plate, when the cells are arranged and installed on the bottom plate 11, the bottom of the cell 2 is bonded on the bottom plate, but the lateral parts of the cells are not fixed, and in the driving process of the electric vehicle, the cell 2 is easily shaken relative to the bottom plate 11, so that the cell end plate is arranged on the lateral part of the cell, the cell 2 can be prevented from shaking, and the cell 2 can be fixed with the cell end plate 12 through the steel belt 103 or the plastic belt.

In this embodiment, a plurality of electric cores are combined to form an electric core submodule, the side plate of the electric core submodule is located on the electric core end plate 12, and the electric core end plate 12 and the electric core submodule are bound and fixed through the steel belt 121, the electric core end plate 12 is arranged on two opposite sides of the electric core submodule, the steel belt 121 has a limiting effect, so that the electric core end plate 12 and the electric core 2 are closely bound, when the plurality of electric cores are fixed, pressure is also applied to the electric cores, and the electric cores 2 are prevented from generating a bulge phenomenon and expanding in use to a certain extent.

And a terminal guard plate 130 is arranged on the cell end plate 12 and used for setting the positive output end or the negative output end of the cell submodule, a fixed cavity 122 is arranged in the cell end plate and used for clamping the terminal guard plate 130, and the positive output end or the negative output end is arranged in the fixed cavity 122. And is electrically connected with the adjacent cell submodule through a positive output end or a negative output end arranged on the cell end plate 12. The terminal guard plate 130 is made of an insulating material, a connecting hole 123 is further formed in the cell end plate and used for connecting and fixing the cell end plate and the bottom plate, the connecting hole 123 can be a threaded hole and used for connecting and fixing the cell end plate 12 and the bottom plate 11, and cells in the cell sub-module are mutually bonded and fixed. In other embodiments, the cell submodule and the cell end plate may be fixed by a plastic band.

As shown in fig. 3, 11, 12, a plurality of electric core end plates 12 bind with electric core submodule piece through steel band 121 and form electric core submodule piece, the bottom plate includes a plurality of arrangement faces, a plurality of electric cores are bound on the arrangement face, every electric core submodule piece is fixed respectively on arrangement face 111 in bottom plate 11, the box inner bag has the partition, a plurality of regions are in order to form the arrangement face for separate into the bottom plate, the electric core card is established between the partition, can further press from both sides tight fixedly with electric core 2 through the partition, also can prevent electric core 2 bulges when improving electric core 2 connection effect. The strength of the whole battery pack is enhanced while the arrangement surfaces 111 are separated, and the bearing capacity of the battery pack is enhanced, so that the battery pack is not easy to deform in use.

As shown in fig. 3 and 4, the upper surface of the bottom plate 11 protrudes upward to form a joint portion 112, and the joint portion 112 corresponds to the bottom surface of the battery cell 2.

The rest part of the relative bottom plate of the face 111 of laying of bottom plate is protruding towards the cavity to form the molding face that corresponds with electric core submodule piece, on the one hand, this molding face's setting makes electric core and 11 connected effect better of bottom plate, and on the other hand, through the setting of the unsmooth shape of bottom plate 11, has strengthened the rigidity and the intensity of bottom plate 11 itself, improves bottom plate 11's bending resistance ability.

The partition part comprises a cross beam, a longitudinal beam, the cross beam, the longitudinal beam is respectively transversely and longitudinally separated into a placement surface with the bottom plate on the bottom plate, the cross beam extends along the width direction of the battery box, the longitudinal beam extends along the length direction of the battery box, the cross beam is provided with a step surface, the step surface is provided with a threaded hole for being in threaded connection with the battery core end plate, the cross beam is specific, the cross beam is connected with a connecting hole 123 of the battery core end plate through a threaded connection piece, the bottom of the battery core end plate 12 has a certain height difference with the bottom of a battery core in the battery core submodule, when the battery core submodule is installed on the bottom plate, the bottom of the battery core is arranged on the placement surface 111, the bottom of the battery core end plate 12 is located on the cross beam or the longitudinal beam, the step surface is in threaded connection with the battery core end plate 12 and the cross beam or the longitudinal beam, the battery core is fixed on the bottom plate from the side part, and the battery core is prevented from shaking.

In other embodiments, the cell end plates 12 may be disposed not only at two ends of the cell submodule, but also on four sides of the cell submodule at the same time. And electric core end plate 12 also fixes through other materials with electric core 2, if set up shell parcel electric core end plate 12 and electric core 2, or set up the notch in box inner bag 1, with the combination direct embedding of electric core end plate 12 and electric core 2 wherein, as long as can realize fixed and from the spacing electric core 2 of lateral part can.

In other embodiments, the cell end plate 12 may not be installed, the cell 2 is bound by the steel belt 121 to form a cell submodule, and the cell submodule is limited and bound by the limiting structure similar to the cell end plate 12 arranged on the mounting surface 111 of the bottom plate 11.

As shown in fig. 1, 2 and 6, the plurality of battery cells 2 are adhered and fixed to each other. The electric cores 2 are mutually adhered and fixed, so that the strength of the plurality of electric core sub-modules can be further improved, and the electric cores 2 are prevented from being displaced, deformed or separated from the electric core sub-modules in the use process.

In other embodiments, adhesive attachment may also be accomplished by welding or other means.

The number of the cross members 132 and the longitudinal members 131 is plural, and the plural cross members 132 or the longitudinal members 131 are parallel to each other to form the plural seating surfaces 111 at intervals on the floor panel 11.

In other embodiments, the beam of the partition may also implement the partition by using other linear methods, as long as the beam is matched with the battery cell 2.

As shown in fig. 1 and 2, the battery cell 2 is adhered to the bottom plate 11 by gluing.

In this embodiment, the battery cell 2 is bonded to the bottom plate 11, so that the strength of the bottom plate 11 is further enhanced while the stability of the battery cell 2 itself is improved.

As shown in fig. 1, the cabinet liner 1 includes a first region 100 at the foremost end, a second region 200 at the middle end, and a third region 300 at the rearmost end. The cells in the first area 100 are stacked, that is, multiple sets of cell sub-modules are stacked in the first area 100 in a direction perpendicular to the bottom plate 11, and the cells in the first area are vertically disposed. The second region 200 may be used for placing tiled cell cores. In the third region 300, that is, in the third region 300, the cells are vertically laid on the surface of the bottom plate 11. The setting mode of electric core in the box inner bag 1 can be used for holding the space of battery box according to electric automobile chassis below and carry out the adaptability adjustment to improve the quantity that holds of electric core.

As shown in fig. 4, 9 and 10, the quick-change battery box further includes a reinforcing part 14, and the box liner 1 is fixed in the housing of the quick-change battery box through the reinforcing part 14.

In this embodiment, the reinforcing portion 14 supports the box liner 1 and fixes the box liner 1 in the shell of the quick-change battery box, so that the strength of the whole battery box can be enhanced, and the box liner 1 is protected from being deformed by external force, thereby protecting the battery core 2 in the box liner 1.

In other embodiments, other conventional reinforcing structures may be used to increase the strength of the tank.

As shown in fig. 9 and 10, the reinforcement portion 14 includes an inner reinforcement portion 142 and an outer reinforcement portion 141;

the box body liner 1 comprises a bottom plate 11 and side plates, wherein the side plates are arranged on the periphery of the bottom plate 11, and outer reinforcing parts 141 are arranged around the side plates and attached to the outer sides of the edges of the side plates;

the inner reinforcement portion 142 is disposed at a bent portion of the inner side of the side plate for improving the structural strength of the bent portion of the side plate.

In the present embodiment, as shown in fig. 9, the external reinforcement portion 141 is frame-shaped, and surrounds the periphery of the cabinet inner 1 to wrap the edge of the cabinet inner 1. The box inner bag is through setting up outer reinforcement 141, from the whole protection box inner bag 1 in the outside for the intensity of box inner bag 1 is higher, is difficult for receiving external force deformation, thereby protects electric core 2 in the box inner bag.

As shown in fig. 10, the inner reinforcement portion 142 is a plurality of reinforcement elements having different shapes, which are respectively disposed at the connection position of each component in the cabinet liner 1, and at the position where the strength is weak such as the midpoint, each reinforcement element is shaped corresponding to the weak position in the cabinet liner 1, and the reinforcement element at the corner is shaped like a corner, and the reinforcement element at the edge midpoint is shaped like a long strip. These reinforcing elements set up each weak position in the 1 structure of box inner bag, strengthen these positions through modes such as thickening or support for the intensity of box inner bag 1 is higher, is difficult for receiving external force deformation, thereby protects electric core 2 in the box inner bag.

In other embodiments, both the inner and outer reinforcements 14 may be fixedly reinforced in the form of frames or stiffeners.

As shown in fig. 7 and 8, the quick-change battery box further includes an upper cover 4, the upper cover 4 covers the box liner 1, the upper cover 4 and the box liner 1 form a cavity, and the battery cell 2 is disposed in the cavity.

In this embodiment, including upper cover 4 and box inner bag 1 wrap up electric core 2, protection electric core 2 that can be better is not damaged by external force, improves the security of battery box.

The shape of the upper cover 4 is also related to the shape of the box liner 1 and the arrangement of the cell submodules in the box liner 1, and in the first region 100 of the box liner 1, the cell submodules in the region are installed in a stacked manner and can be placed in multiple layers, so that the height of the upper cover 4 is adaptively adjusted to include more cell submodules therein. In the second region 200 of the housing liner 1, the part of the upper cover 4 is also lower, since this part is provided with the tiled cell submodules. In the third area 300 of the tank liner 1, only one layer of vertical cell submodules is located, so that the height of the part of the upper cover 4 is lower than that of the first area 100. Above-mentioned three regional division and the mode of placing of module can carry out the adaptability adjustment according to electric automobile bottom space to obtain the biggest space that utilizes, improve the volume of holding of electric core, also be equipped with a plurality of concave-convex structures of buckling on the upper surface of upper cover 4, make it through certain plastic deformation when the shaping, improve holistic intensity, with better protection electric core 2, avoid because of external force such as collision down upper cover 4 warp harm electric core 2.

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 that the scope of the utility model is defined by the appended claims. Various changes or modifications to these embodiments may be made by those skilled in the art without departing from the principle and spirit of this invention, and these changes and modifications are within the scope of this invention.

Claims (20)

1. A quick-change battery box, comprising:

the box body inner container comprises a bottom plate;

the battery cell is arranged in the inner container of the box body, and the bottom of the battery cell is bonded on the bottom plate;

the bottom guard plate is arranged at the bottom of the bottom plate, and a buffer cavity is formed between the bottom guard plate and the bottom plate.

2. The quick-change battery box according to claim 1, characterized in that a support beam is arranged between the bottom protection plate and the bottom plate for connecting and supporting the bottom protection plate and the bottom plate.

3. The quick-change battery box according to claim 2, characterized in that the support beam is provided with a first threaded hole, and the bottom guard plate is connected in the first threaded hole through a threaded connector.

4. A quick-change battery box as claimed in claim 3, characterized in that the surface of the bottom shield facing away from the bottom plate is provided with a recess which extends towards the bottom plate.

5. The quick-change battery box according to claim 4, wherein the recess has a second threaded hole therein for the threaded connector to be fixedly coupled to connect the bottom plate with the bottom plate.

6. The quick-change battery box according to claim 1, wherein the side portions of the cells are fixed to the bottom plate by cell end plates.

7. The quick-change battery box according to claim 6, wherein the cell end plate is arranged at a side part of a cell submodule formed by combining a plurality of cells.

8. The quick-change battery box according to claim 7, wherein the cell end plate is provided with a terminal guard plate for setting a positive output end or a negative output end of the cell submodule.

9. The quick-change battery box according to claim 8, wherein a fixing cavity is formed in the cell end plate and used for clamping the terminal protection plate, and the positive output end or the negative output end is arranged in the fixing cavity.

10. The quick-change battery box according to claim 9, wherein the cell end plate is provided with a connecting hole for connecting and fixing the cell end plate and the bottom plate.

11. The quick-change battery box of claim 7, wherein the cell submodule is fixed with the cell end plate through a steel belt or a plastic belt.

12. The quick-change battery box according to claim 7, wherein the cells in the cell sub-modules are adhered and fixed to each other.

13. The quick-change battery box according to claim 1, characterized in that the bottom plate comprises a plurality of seating surfaces, and a plurality of battery cells are adhered to the plurality of seating surfaces.

14. The quick-change battery box according to claim 13, characterized in that the box body liner is provided with a partition part which divides the bottom plate into a plurality of areas to form the placing surface.

15. The quick-change battery box according to claim 14, characterized in that the cell clips are arranged between the partitions.

16. The quick-change battery box according to claim 15, characterized in that the partition comprises a cross beam and a longitudinal beam, which are respectively arranged on the bottom plate in the transverse direction and the longitudinal direction to partition the bottom plate into the arrangement surface.

17. The quick-change battery box of claim 16, wherein the cross beam and/or the longitudinal beam is provided with a step surface, and the step surface is provided with a threaded hole for threaded connection with the cell end plate.

18. The quick-change battery box according to claim 1, characterized in that the upper surface of the bottom plate protrudes upwards to form an engagement part, and the engagement part corresponds to the bottom surface of the battery core.

19. The quick-change battery box according to claim 1, characterized in that the quick-change battery box further comprises a reinforcement portion, and the box body liner is fixed in the quick-change battery box through the reinforcement portion.

20. The quick-change battery pack according to claim 19, wherein the reinforcement includes an inner reinforcement and an outer reinforcement;

the outer reinforcing part is arranged around the inner container of the box body and is attached to the outer side of the edge of the inner container of the box body;

the inner reinforcing part is arranged at the bent part at the inner side of the edge of the inner container of the box body.

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