CN218498256U - Battery package box, battery package and vehicle - Google Patents

Abstract

The utility model discloses a battery pack box, a battery pack and a vehicle, which comprises a frame, a first longitudinal beam, a middle cross beam and a plate body, wherein the frame is provided with a plurality of fixed points which are arranged at intervals along the frame; the first longitudinal beam is arranged in the frame, and two ends of the first longitudinal beam are connected with the inner wall of the frame; the middle cross beam is arranged in the frame and is crossed with the first longitudinal beams, two ends of the middle cross beam are connected with the inner wall of the frame, a plurality of first cavities partitioned by the first longitudinal beams are formed on one side of the middle cross beam, and a plurality of second cavities partitioned by the first longitudinal beams are formed on the other side of the middle cross beam; the plate body is arranged on one side of the frame and seals a frame opening on one side of the frame, and the plate body is connected with the first longitudinal beam and the middle cross beam in a sealing mode. The utility model discloses a leakproofness of battery package box is good, has guaranteed the security that the battery used.

Description

Battery package box, battery package and vehicle

Technical Field

The utility model relates to a battery package technical field specifically relates to a battery package box, an use battery package of this battery package box and a vehicle of using this battery package.

Background

In recent years, with the development of new energy vehicles, power batteries have been rapidly developed as power sources for new energy vehicles. However, in the related art, the sealing performance of the power battery is poor, and the use safety of the power battery is reduced.

SUMMERY OF THE UTILITY MODEL

The present invention is made based on the discovery and recognition by the inventors of the following facts and problems:

in the related art, a plurality of longitudinal beams are designed in the lower box body of the power battery, fixing points such as mounting holes are arranged on the longitudinal beams, the arrangement of the fixing points enables the sealing performance between the inner chambers of the lower box body to be poor, and the use safety of the power battery is reduced.

The present invention aims at solving at least one of the technical problems in the related art to a certain extent.

Therefore, the embodiment of the utility model provides a battery package box, this battery package box's leakproofness is good, has guaranteed the security that the battery used.

The embodiment of the utility model provides a still provide a battery package of using above-mentioned battery package box.

The embodiment of the utility model provides a vehicle of using above-mentioned battery package is still provided.

The utility model discloses battery package box includes:

a frame provided with a plurality of fixing points, the plurality of fixing points being arranged at intervals along the frame;

the first longitudinal beam is arranged in the frame, and two ends of the first longitudinal beam are connected with the inner wall of the frame;

the middle cross beam is arranged in the frame and is crossed with the first longitudinal beams, two ends of the middle cross beam are connected with the inner wall of the frame, a plurality of first cavities partitioned by the first longitudinal beams are formed on one side of the middle cross beam, and a plurality of second cavities partitioned by the first longitudinal beams are formed on the other side of the middle cross beam;

the plate body is arranged on one side of the frame and seals a frame opening on one side of the frame, and the plate body is connected with the first longitudinal beam and the middle cross beam in a sealing mode.

The utility model discloses the leakproofness of battery package box is good, has guaranteed the security that the battery used.

In some embodiments, a length dimension L1 of the first cavity along the extending direction of the first longitudinal beam is smaller than a length dimension L2 of the second cavity along the extending direction of the first longitudinal beam, the first cavity is suitable for mounting an electrical connector therein, and the second cavity is suitable for mounting a battery cell therein.

In some embodiments, the plate body is a water-cooled plate adapted to cool the electrical connector and the cell.

In some embodiments, the frame comprises a front cross beam, a rear cross beam, a left longitudinal beam and a right longitudinal beam, the front cross beam and the rear cross beam are arranged at intervals in parallel, the left longitudinal beam and the right longitudinal beam are arranged at intervals in parallel, one end of the front cross beam is connected with one end of the left longitudinal beam, the other end of the front cross beam is connected with one end of the right longitudinal beam, one end of the rear cross beam is connected with the other end of the left longitudinal beam, and the other end of the rear cross beam is connected with the other end of the right longitudinal beam.

In some embodiments, the front cross member is provided with a stamped plate adapted to assemble a component;

and/or the front cross beam is provided with a boss which is suitable for being connected with a vehicle guard plate or an auxiliary frame;

and/or the outer wall surface of the front cross beam is provided with a plurality of first sleeves which are arranged at intervals along the extending direction of the front cross beam, and the first sleeves form the fixing points.

In some embodiments, the front cross beam is provided with a protruding portion, the protruding portion is provided with a water inlet interface and a water outlet interface, and the water inlet interface and the water outlet interface are both communicated with the cooling channel of the water cooling plate;

and/or the front cross beam is provided with a switching bracket which is suitable for switching an infusion tube for conveying cooling liquid.

In some embodiments, the outer wall surfaces of the left longitudinal beam and the right longitudinal beam are provided with a first plate portion and a second plate portion, the first plate portion and the second plate portion extend along the extending direction of the left longitudinal beam or the extending direction of the right longitudinal beam, and the first plate portion and the second plate portion are arranged at intervals along the height direction of the left longitudinal beam or the right longitudinal beam.

In some embodiments, the first plate part is provided with a hollow cavity, and a first blocking piece for blocking the hollow cavity is assembled in the hollow cavity;

and/or a plurality of second sleeves are arranged on the first plate part at intervals along the extension direction of the first plate part, and the second sleeves form the fixing points;

and/or a plurality of fixing holes are arranged on the second plate part, the fixing holes are arranged at intervals along the extension direction of the second plate part, and the fixing holes are suitable for being clamped and fixed with parts;

and/or, be equipped with a plurality of first grooves of dodging on the second board, it is a plurality of first groove of dodging along the extending direction interval arrangement of second board, first groove of dodging is suitable for dodging the bolt.

In some embodiments, a plurality of welding blocks are included, and any two of the front cross beam, the rear cross beam, the left longitudinal beam and the right longitudinal beam are connected and fixed through the welding blocks.

In some embodiments, the first cavity is divided into two sub-cavities by a plurality of first longitudinal beams, each of the first longitudinal beams extends along a same direction as the first cavity, and the plurality of second longitudinal beams are assembled in the first cavities in a one-to-one correspondence manner and are suitable for dividing the first cavity into two sub-cavities.

In some embodiments, a plurality of cutting grooves are arranged on the middle cross beam, and the cutting grooves are suitable for communicating the first cavity and the corresponding second cavity and forming an exhaust channel;

and/or the middle cross beam is provided with a hollow cavity, the middle cross beam is provided with a second plugging piece, and the second plugging piece is suitable for plugging the end part of the hollow cavity.

In some embodiments, the portion of the first longitudinal beam for dividing the first cavities is provided with a plurality of mounting holes, and the mounting holes are suitable for mounting fixed parts;

and/or a second avoidance groove is formed in one side, facing the plate body, of the first longitudinal beam and is suitable for being embedded into the middle cross beam;

and/or the part of the first longitudinal beam for dividing the plurality of first cavities is provided with a fastener, and the fastener is suitable for being connected and fixed with the cover body.

In some embodiments, the outer peripheral side of the frame is provided with an insulating protective layer and a first heat insulating layer, the insulating protective layer being provided between the frame and the first heat insulating layer.

In some embodiments, an epoxy coating is provided on the inner wall surface of the plate body; and/or a second heat-insulating layer is arranged on the outer wall surface of the plate body.

In some embodiments, the outer wall surface of the second insulating layer is provided with a protective plate, and the outer wall surface of the protective plate is sprayed with a PVC coating.

The utility model discloses battery package includes battery package box, electric core and lid, the battery package box be in above-mentioned arbitrary embodiment the battery package box, the lid is located the battery package box will the uncovered shutoff of battery package box, electric core is located in the battery package box.

The vehicle of the embodiment of the present invention includes the battery pack as described in any of the above embodiments.

Drawings

Fig. 1 is a first schematic perspective view of a battery pack case according to an embodiment of the present invention.

Fig. 2 is a second schematic perspective view of a battery pack case according to an embodiment of the present invention.

Fig. 3 is a schematic view of the first sleeve of fig. 2.

Fig. 4 is a schematic view of the left stringer of fig. 2.

Fig. 5 is a schematic view of the cross-beam of fig. 1.

Fig. 6 is a schematic view of the first stringer of fig. 1.

Fig. 7 is an exploded view of the battery pack case according to the embodiment of the present invention.

Reference numerals:

a frame 1; a front cross member 11; a punching plate 111; a boss 112; a first sleeve 113; the projection 114; a water inlet interface 115; an outlet port 116; a transfer bracket 117; a rear cross member 12; a left longitudinal beam 13; a first plate portion 131; the second plate portion 132; a first blocking piece 133; a second sleeve 134; a fixing hole 135; a first avoidance slot 136; a right longitudinal beam 14; an insulating protective layer 101; a first insulating layer 102;

a first longitudinal beam 2; a mounting hole 21; a second avoidance groove 22; a fastener 23;

a middle cross beam 3; cutting the groove 31; a second closure 32;

a plate body 4; an epoxy coating 401; a second insulating layer 402; a guard plate 403; a PVC coating 404;

a first chamber 5;

a second chamber 6;

a second longitudinal beam 7;

and welding the block 8.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1 to 7, the battery pack case according to the embodiment of the present invention includes a frame 1, a first longitudinal beam 2, a middle cross beam 3 and a plate body 4.

The frame 1 is provided with a plurality of fixing points which are arranged at intervals along the frame 1. As shown in fig. 1, the frame 1 may be substantially square, the frame 1 may be made of metal, for example, the frame 1 may be made of aluminum alloy, and the frame 1 may be provided separately, that is, the frame 1 may be formed by splicing a plurality of profiles, and each profile may be formed by extrusion. In other embodiments, the frame 1 may be a unitary structure.

The fixed point can be connection structure such as screw hole, double-screw bolt, and a plurality of fixed points can be arranged along the extending direction interval of frame 1, and during the assembly, every fixed point all can be connected fixedly with the lid of battery package.

The first longitudinal beam 2 is arranged in the frame 1, and two ends of the first longitudinal beam 2 are connected with the inner wall of the frame 1. As shown in fig. 1 and 2, the first longitudinal beam 2 may be fixed in the middle of the frame 1, the first longitudinal beam 2 may extend substantially along the length direction (front-rear direction) of the frame 1, the front end of the first longitudinal beam 2 may be connected and fixed to the front inner wall of the frame 1, and the rear end of the first longitudinal beam 2 may be connected and fixed to the rear inner wall of the frame 1.

The middle cross beam 3 is arranged in the frame 1 and is crossed with the first longitudinal beams 2, two ends of the middle cross beam 3 are connected with the inner wall of the frame 1, one side of the middle cross beam 3 is provided with a plurality of first cavities 5 separated by the first longitudinal beams 2, and the other side of the middle cross beam 3 is provided with a plurality of second cavities 6 separated by the first longitudinal beams 2.

For example, as shown in fig. 1 and 2, the middle cross member 3 may be extended along the width direction (left-right direction) of the frame 1, the left end of the middle cross member 3 may be connected and fixed to the left inner wall of the frame 1, and the right end of the middle cross member 3 may be connected and fixed to the right inner wall of the frame 1. The cross center beam 3 and the first longitudinal beam 2 are arranged substantially vertically, and the front side of the cross center beam 3 can be partitioned into at least two second chambers 6, and the rear side of the cross center beam 3 can be partitioned into at least two first chambers 5. The first cavity 5 may be used to mount electrical components such as electrical connectors, and the second cavity 6 may be used to mount battery cells.

The plate body 4 is arranged on one side of the frame 1 and seals a frame opening on one side of the frame 1, and the plate body 4 is connected with the first longitudinal beam 2 and the middle cross beam 3 in a sealing mode. The shape of the plate body 4 is substantially the same as that of the frame 1, the plate body 4 can be fixed on the bottom side of the frame 1 and seal and close the bottom side frame opening of the frame 1, and the plate body 4 can be welded and connected with the frame 1 by means of friction stir welding.

The utility model discloses battery package box is applicable to the battery integration technique of CTB or CTP, and the fixed point is established on frame 1, and frame 1's inside need not set up the module fixed point, has realized the design of the no porose of frame 1 inside to avoided module fixed point department to reveal easily and influenced the condition of leakproofness, guaranteed the security that the battery used.

In some embodiments, a length dimension L1 of the first cavity 5 along the extending direction of the first longitudinal beam 2 is smaller than a length dimension L2 of the second cavity 6 along the extending direction of the first longitudinal beam 2, the first cavity 5 is suitable for mounting an electrical connector therein, and the second cavity 6 is suitable for mounting a battery cell therein.

For example, as shown in fig. 1, the cross member 3 is disposed at a position close to the rear side wall of the frame 1 in the front-rear direction, i.e., the space in the first cavity 5 at the front side of the cross member 3 is large, so that the assembly requirement for mounting a large number of battery cells can be satisfied, and the space in the second cavity 6 behind the cross member 3 is small, so that the mounting requirement of electrical components such as electrical connectors can be satisfied.

In some embodiments, the plate body 4 is a water cooled plate adapted to cool the electrical connections and the cells. For example, plate body 4 can be equipped with cooling channel, can let in the coolant liquid in the cooling channel to can realize the cooling to electric connector and electric core, make battery package box compatible refrigerated function.

In some embodiments, the frame 1 comprises a front cross beam 11, a rear cross beam 12, a left longitudinal beam 13 and a right longitudinal beam 14, the front cross beam 11 and the rear cross beam 12 are arranged in parallel and spaced apart, the left longitudinal beam 13 and the right longitudinal beam 14 are arranged in parallel and spaced apart, one end of the front cross beam 11 is connected with one end of the left longitudinal beam 13, the other end of the front cross beam 11 is connected with one end of the right longitudinal beam 14, one end of the rear cross beam 12 is connected with the other end of the left longitudinal beam 13, and the other end of the rear cross beam 12 is connected with the other end of the right longitudinal beam 14.

For example, as shown in fig. 2 and 7, the frame 1 may be substantially square frame-shaped, with the front cross member 11 and the rear cross member 12 being substantially arranged in parallel at a spacing, and the left side member 13 and the right side member 14 being substantially arranged in parallel at a spacing. The front cross beam 11 and the left longitudinal beam 13 and the right longitudinal beam 14 can be fixedly connected in a welding mode, and the rear cross beam 12 and the left longitudinal beam 13 and the right longitudinal beam 14 can also be fixedly connected in a welding mode. And the front cross beam 11, the rear cross beam 12, the left longitudinal beam 13 and the right longitudinal beam 14 can be processed and molded in an extrusion mode, so that the mold structure can be simplified, the mold opening period can be shortened, and the production cost can be reduced.

In some embodiments, the front cross member 11 is provided with a stamped plate 111, and the stamped plate 111 is adapted to fit the component. The punched plate 111 may be fixed to the front side wall of the front cross member 11 by welding, and the punched plate 111 may be used to mount other parts such as a wiring harness.

In some embodiments, the front cross member 11 is provided with a boss 112, and the boss 112 is adapted to be connected to the fender panel 403 or the sub-frame. For example, the boss 112 may be integrally extruded or welded on the front side wall of the front cross member 11 through the front cross member 11, and the boss 112 may be used to provide a mounting point for the vehicle plastic guard plate 403 or the subframe connecting bracket, which facilitates assembly.

In some embodiments, the outer wall surface of the front cross member 11 is provided with a plurality of first sleeves 113, the plurality of first sleeves 113 are arranged at intervals along the extending direction of the front cross member 11, and the first sleeves 113 form fixing points. For example, as shown in fig. 2 and 3, the first sleeve 113 may be formed by forging or extrusion, and then may be attached by gluing or welding to the front cross member 11, and the mounting flange surface of the first sleeve 113 may be used for attaching to the entire vehicle.

In some embodiments, the front cross beam 11 is provided with a protruding portion 114, the protruding portion 114 is provided with a water inlet port 115 and a water outlet port 116, and the water inlet port 115 and the water outlet port 116 are both communicated with the cooling channel of the water-cooled plate. For example,

in some embodiments, the front cross member 11 is provided with an adapter bracket 117, and the adapter bracket 117 is adapted to be adapted to adapter a fluid line for delivering a cooling fluid. For example, the adapter bracket 117 may be fixed to the front side wall of the front cross member 11 by welding or gluing, and when the plate body 4 is a water-cooling plate, the adapter bracket 117 may be used to connect a water pipe (infusion pipe) communicating with the cooling channel of the plate body 4.

In some embodiments, the outer wall surfaces of the left side member 13 and the right side member 14 are each provided with a first plate portion 131 and a second plate portion 132, the first plate portion 131 and the second plate portion 132 each extend in the extending direction of the left side member 13 or the extending direction of the right side member 14, and the first plate portion 131 and the second plate portion 132 are arranged at intervals in the height direction of the left side member 13 or the right side member 14.

For example, the left side member 13 and the right side member 14 may have a symmetrical structure, and the left side member 13 will be described below as an example, and as shown in fig. 4, the first plate portion 131 and the second plate portion 132 may be provided integrally with the left side member 13, the first plate portion 131 and the second plate portion 132 may be both substantially flat plates, and the first plate portion 131 and the second plate portion 132 may be both provided on an outer wall surface of the left side member 13 and extend substantially in the front-rear direction. Wherein the first plate portion 131 is located above the second plate portion 132.

The first plate portion 131 and the second plate portion 132 can enhance the structural strength of the left longitudinal beam 13, and can provide a mounting position, so that the left longitudinal beam 13 is fixedly connected with the whole vehicle.

In some embodiments, the first plate portion 131 is provided with a hollow cavity, and a first blocking member 133 for blocking the hollow cavity is assembled in the hollow cavity. For example, the first blocking piece 133 may be a blocking glue, and when the left longitudinal beam 13 or the right longitudinal beam 14 is processed and molded in an extrusion manner, due to the reason of profile extrusion, two side edges of the left longitudinal beam 13 or the right longitudinal beam 14 are hollow cavities, and the hollow cavities can be sealed by the blocking glue, so that the condition that air is communicated and abnormal sound occurs in the driving process is avoided.

In some embodiments, a plurality of second sleeves 134 are disposed on the first plate portion 131, the plurality of second sleeves 134 are arranged at intervals along the extending direction of the first plate portion 131, and the second sleeves 134 form fixing points. For example, the second sleeve 134 may also be formed by forging or extrusion, and then may be connected by gluing or welding with the left or right longitudinal beam 13 or 14, and the mounting flange surface on the second sleeve 134 may also be used for connecting with the entire vehicle.

In some embodiments, the second plate portion 132 is provided with a plurality of fixing holes 135, the plurality of fixing holes 135 are arranged at intervals along the extending direction of the second plate portion 132, and the fixing holes 135 are suitable for being clamped and fixed with the component. As shown in fig. 4, the fixing hole 135 may be disposed on the outer side wall surface of the second plate portion 132, and the fixing hole 135 may be used for fastening other components of the entire vehicle, thereby facilitating assembly with the entire vehicle.

In some embodiments, the second plate portion 132 is provided with a plurality of first avoiding grooves 136, the plurality of first avoiding grooves 136 are arranged at intervals along the extending direction of the second plate portion 132, and the first avoiding grooves 136 are adapted to avoid the bolts. As shown in fig. 4, a plurality of first avoiding grooves 136 may be formed on the outer wall surface of the second plate portion 132, and the plurality of first avoiding grooves 136 and the plurality of fixing holes 135 may be alternately arranged one by one. When in use, the first avoiding groove 136 can avoid bolts and the like of the battery pack in the installation process.

In some embodiments, the battery pack case comprises a plurality of welding blocks 8, and any adjacent two of the front cross beam 11, the rear cross beam 12, the left longitudinal beam 13 and the right longitudinal beam 14 are fixedly connected through the welding blocks 8.

For example, as shown in fig. 7, welding block 8 can be corner welding block, welding block 8 can be equipped with four, four welding blocks 8 set up four corners at frame 1 respectively, because front beam 11, rear beam 12, left side longeron 13 and right side longeron 14 all can extrude technology machine-shaping through the aluminium alloy, welding block 8 can be located between two adjacent roof beams, therefore, on the one hand, can improve frame 1's structural strength, on the other hand can also be with the inner space separation of two adjacent roof beams, can be in order to avoid the inside passageway that link up that forms of frame 1, and then can avoid the problem of inside circulation at each roof beam after water enters.

In some embodiments, the battery pack case comprises a plurality of second longitudinal beams 7, the extension direction of each second longitudinal beam 7 is the same as the extension direction of the first longitudinal beam 2, and the plurality of second longitudinal beams 7 are assembled in the plurality of first cavities 5 in a one-to-one correspondence and are suitable for dividing the first cavities 5 into two sub-cavities.

As shown in fig. 1 and 7, the number of the second longitudinal beams 7 may be two, the extending direction of each second longitudinal beam 7 may be the same as the extending direction of the first longitudinal beam 2, and the two second longitudinal beams 7 and the first longitudinal beam 2 are arranged in parallel and at intervals in the left-right direction, wherein one second longitudinal beam 7 is located on the left side of the first longitudinal beam 2, and the other second longitudinal beam 7 is located on the right side of the first longitudinal beam 2.

The left second longitudinal beam 7 may divide the left first chamber 5 of the first longitudinal beam 2 into two sub-chambers, and the right second longitudinal beam 7 may divide the right first chamber 5 of the first longitudinal beam 2 into two sub-chambers. The arrangement of the second longitudinal beam 7 can enhance the structural strength and can further separate the first cavity 5, thereby facilitating the classified induction assembly of different electrical connectors.

In some embodiments, the central cross-member 3 is provided with a plurality of cut grooves 31, the cut grooves 31 being adapted to communicate the first chamber 5 with the corresponding second chamber 6 and form a venting channel. As shown in fig. 5, three cutting grooves 31 may be provided on the middle cross beam 3, wherein two cutting grooves 31 are respectively located at the left and right ends of the middle cross beam 3, and another cutting groove 31 may be located in the middle of the middle cross beam 3. After the middle cross beam 3 is assembled in the frame 1, the cutting grooves 31 can form an exhaust passage, thereby facilitating the exhaust of gas in the event of thermal runaway.

In some embodiments, the middle cross member 3 is provided with a hollow cavity, the middle cross member 3 is provided with a second closure member 32, and the second closure member 32 is adapted to close off an end of the hollow cavity. As shown in fig. 5, the second blocking piece 32 may also be a blocking glue, and the second blocking piece 32 may seal and block the end of the hollow cavity of the middle cross beam 3, so as to prevent foreign matters or water from entering the inside of the middle cross beam 3.

It should be noted that, during assembly, the bottom surface of the middle cross beam 3 may be firstly glued to the plate body 4, and then may be welded to the plate body 4 by punctured friction stir welding. The top surface of the middle cross beam 3 can be fixedly bonded with the cover body.

In some embodiments, the portion of the first longitudinal beam 2 separating the first cavities 5 is provided with a plurality of mounting holes 21, the mounting holes 21 being adapted to mount the fixed component. As shown in fig. 6, a plurality of mounting holes 21 may be uniformly distributed in the rear half portion of the first side member 2, and the mounting holes 21 may be used for mounting and fixing parts such as electrical connectors.

In some embodiments, the side of the first longitudinal beam 2 facing the panel 4 is provided with a second avoiding groove 22, the second avoiding groove 22 being adapted to allow the middle cross beam 3 to be inserted. As shown in fig. 6, the second avoiding groove 22 may be provided below the first longitudinal beam 2, and when the first longitudinal beam 2 and the middle cross beam 3 are assembled, a part of the middle cross beam 3 may be inserted into the second avoiding groove 22 from below, so that the situation that the first longitudinal beam 2 and the middle cross beam 3 are broken can be avoided, the integrity of the first longitudinal beam 2 and the middle cross beam 3 is ensured, and the structural strength of the whole frame 1 can be ensured.

In some embodiments, the portion of the first longitudinal beam 2 for dividing the plurality of first cavities 5 is provided with a fastener 23, and the fastener 23 is adapted to be fixedly connected with the cover body. As shown in fig. 6, the fastening member 23 may be a blind rivet nut, the fastening member 23 may be fixed above the rear end of the first longitudinal beam 2, and the fastening member 23 may serve as a fixing point for a part such as a cover, thereby further facilitating installation and assembly.

It should be noted that, during assembly, the upper surface of the first longitudinal beam 2 may be fixed to the upper cover by adhesive, and the lower surface of the first longitudinal beam 2 may be fixed to the plate body 4 by structural adhesive.

In some embodiments, the outer circumference side of the frame 1 is provided with an insulating protection layer 101 and a first heat preservation layer 102, and the insulating protection layer 101 is provided between the frame 1 and the first heat preservation layer 102.

For example, as shown in fig. 7, the insulation protection layer 101 may be an insulation protection member, the insulation protection member is distributed on the beams (the front beam 11, the rear beam 12, the left longitudinal beam 13, and the right longitudinal beam 14) around the cell, the insulation protection member is composed of an insulation material and a high temperature resistant fireproof material on the corresponding cell periphery, the insulation material may be composed of PET or PI, or the like, and is bonded to the corresponding beam through a back adhesive, the high temperature resistant fireproof material may be composed of a material similar to a mica tape, and the mica tape is bonded to the insulation material through a back adhesive. Through the process mode, the insulating protective sleeve piece can be used for insulating the beam and protecting the beam from high-temperature thermal runaway.

As shown in fig. 7, the first thermal insulation layer 102 may be disposed on the outer periphery of the frame 1, and the first thermal insulation layer 102 may be a thermal insulation coating, for example, an epoxy layer, so as to perform a thermal insulation function on the battery pack.

In some embodiments, as shown in fig. 7, the inner wall surface of the plate body 4 is provided with an epoxy coating 401. The epoxy coating 401 can be sprayed on the upper surface of the plate body 4, and then can be baked in an oven for a period of time, so that the epoxy coating can be cured on the plate body 4, and by means of the design, the insulation above the plate body 4 can be ensured, and the connection with the battery cell can be better facilitated.

In some embodiments, as shown in fig. 7, a second insulating layer 402 is disposed on the outer wall surface of the plate body 4. The second insulating layer 402 can be formed by foaming or other processes, a typical material is MPP foaming material, and the material or the like has a low thermal conductivity, so that the whole bag has a good insulating effect, and meanwhile, the material or the like has certain strength and can bear certain bottom impact resistance.

In some embodiments, as shown in fig. 7, the outer wall surface of the second insulating layer 402 is provided with a protective plate 403, and the outer wall surface of the protective plate 403 is sprayed with a PVC coating 404.

The protective plate 403 may be a bottom protective plate 403, and the protective plate 403 may be a steel plate formed by a stamping process, or an aluminum plate made of an extruded profile, so as to protect the bottom of the battery cell inside the battery pack.

The PVC coating 404 can be applied to the outer surface (lower surface) of the shield 403 by hand or by a robotic arm and then baked in an oven, thereby facilitating the curing of the PVC on the shield 403 and ensuring that the PVC coating 404 has a certain adhesion to the bottom shield 403.

The PVC coating 404 is mainly used for preventing small stones or small foreign matters from beating the guard plate 403 in the driving condition, and further preventing the anti-corrosion problem of the bottom guard plate 403 caused by paint falling or pits on the electrophoretic layer on the guard plate 403. Meanwhile, abnormal sound at the bottom of the battery pack in the driving process can be avoided, and complaints or uncomfortable feelings of users can be avoided.

In some embodiments, the position of the cross member 3 is adjustable in the direction of extension along the first longitudinal member 2, thereby facilitating the arrangement of batteries of different numbers and sizes.

The following describes a battery pack according to an embodiment of the present invention.

The utility model discloses battery package includes battery package box, electric core and lid, and the battery package box can be for the battery package box that describes in the arbitrary embodiment of the aforesaid, and the uncovered shutoff of battery package box and with the battery package box is located to the lid, for example, the lid can be installed in the top of battery package box and with the uncovered shutoff in top of battery package box, and the battery package box is located to electric core.

The following describes a vehicle of an embodiment of the present invention.

The utility model discloses the vehicle includes the battery package, and the battery package can be the battery package of the description in the above-mentioned embodiment. The vehicle may be an automobile, a truck, a bus, an SUV, or the like, or may be another vehicle that requires a battery pack.

The utility model discloses the box of the battery package of vehicle has following beneficial effect:

1) The design of the box body has no traditional module fixing point, the electric core is directly arranged in the internal area, no redundant structure is provided, the box body is suitable for a battery integration scheme of CTB or CTP, and the box body contributes greatly to the integration level of the whole vehicle;

2) The battery cell stacking device has certain compatibility, is suitable for stacking different numbers of battery cells by arranging different positions of the middle cross beam, can be compatible with different electric quantities, has strong compatibility, and is suitable for a platform project;

3) The heat preservation of the battery pack can be controlled at a better level through the design of heat preservation schemes at the periphery and the bottom of the box body;

4) Different from the prior lower box body design (the middle is provided with a whole package fixed point), the box body of the embodiment of the utility model adopts the scheme design of non-hole (the middle is provided with no fixed point), which has great benefit on the sealing and thermal runaway of the whole vehicle;

5) The design of the large-surface cooling plate is integrated, the integration level is high, the design of the guard plate is integrated, and the bottom impact resistance is good;

6) The box body has light weight, low cost and good market competitiveness.

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

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present application, unless expressly stated or limited otherwise, a first feature "on" or "under" a second feature may be directly contacting the second feature or the first and second features may be indirectly contacting the second feature through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

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

Claims (17)

1. A battery pack case, comprising:

a frame provided with a plurality of fixing points, the plurality of fixing points being arranged at intervals along the frame;

the first longitudinal beam is arranged in the frame, and two ends of the first longitudinal beam are connected with the inner wall of the frame;

the middle cross beam is arranged in the frame and is crossed with the first longitudinal beams, two ends of the middle cross beam are connected with the inner wall of the frame, a plurality of first cavities partitioned by the first longitudinal beams are formed on one side of the middle cross beam, and a plurality of second cavities partitioned by the first longitudinal beams are formed on the other side of the middle cross beam;

the plate body is arranged on one side of the frame and seals a frame opening on one side of the frame, and the plate body is connected with the first longitudinal beam and the middle cross beam in a sealing mode.

2. The battery pack case according to claim 1, wherein a length dimension L1 of the first cavity along the extending direction of the first longitudinal beam is smaller than a length dimension L2 of the second cavity along the extending direction of the first longitudinal beam, the first cavity is suitable for mounting an electrical connector therein, and the second cavity is suitable for mounting a battery cell therein.

3. The battery pack case of claim 2, wherein the plate is a water-cooled plate adapted to cool the electrical connectors and the cells.

4. The battery pack box of claim 3, wherein the frame comprises a front cross beam, a rear cross beam, a left longitudinal beam and a right longitudinal beam, the front cross beam and the rear cross beam are arranged in parallel at intervals, the left longitudinal beam and the right longitudinal beam are arranged in parallel at intervals, one end of the front cross beam is connected with one end of the left longitudinal beam, the other end of the front cross beam is connected with one end of the right longitudinal beam, one end of the rear cross beam is connected with the other end of the left longitudinal beam, and the other end of the rear cross beam is connected with the other end of the right longitudinal beam.

5. The battery pack case according to claim 4, wherein the front cross member is provided with a stamped plate adapted to fit the component;

and/or the front cross beam is provided with a boss which is suitable for being connected with a vehicle guard plate or an auxiliary frame;

and/or the outer wall surface of the front cross beam is provided with a plurality of first sleeves which are arranged at intervals along the extending direction of the front cross beam, and the first sleeves form the fixing points.

6. The battery pack box of claim 4, wherein the front cross beam is provided with a protruding portion, the protruding portion is provided with a water inlet port and a water outlet port, and the water inlet port and the water outlet port are both communicated with the cooling channel of the water cooling plate;

and/or the front cross beam is provided with a switching bracket which is suitable for switching an infusion tube for conveying cooling liquid.

7. The battery pack case according to claim 4, wherein the outer wall surfaces of the left and right side members are each provided with a first plate portion and a second plate portion, the first plate portion and the second plate portion each extend in the extending direction of the left side member or the extending direction of the right side member, and the first plate portion and the second plate portion are arranged at intervals in the height direction of the left side member or the right side member.

8. The battery pack box according to claim 7, wherein the first plate portion is provided with a hollow cavity, and a first blocking piece for blocking the hollow cavity is assembled in the hollow cavity;

and/or a plurality of second sleeves are arranged on the first board part at intervals along the extending direction of the first board part, and the second sleeves form the fixing points;

and/or a plurality of fixing holes are arranged on the second plate part, the fixing holes are arranged at intervals along the extension direction of the second plate part, and the fixing holes are suitable for being clamped and fixed with parts;

and/or, be equipped with a plurality of first grooves of dodging on the second board, it is a plurality of first groove of dodging along the extending direction interval arrangement of second board, first groove of dodging is suitable for dodging the bolt.

9. The battery pack box body of claim 4, comprising a plurality of welding blocks, wherein any adjacent two of the front cross beam, the rear cross beam, the left longitudinal beam and the right longitudinal beam are fixedly connected through the welding blocks.

10. The battery pack case according to claim 3, comprising a plurality of second longitudinal beams, each of which has an extending direction identical to that of the first longitudinal beam, the plurality of second longitudinal beams being fitted in the plurality of first cavities in a one-to-one correspondence and adapted to divide the first cavities into two sub-cavities.

11. The battery pack box of claim 1, wherein the middle cross beam is provided with a plurality of cutting grooves, and the cutting grooves are suitable for communicating the first cavity with the corresponding second cavity and forming an exhaust channel;

and/or the middle cross beam is provided with a hollow cavity, the middle cross beam is provided with a second plugging piece, and the second plugging piece is suitable for plugging the end part of the hollow cavity.

12. The battery pack case according to claim 1, wherein the portion of the first longitudinal beam dividing the first cavities is provided with a plurality of mounting holes adapted to mount a fixed component;

and/or a second avoidance groove is formed in one side, facing the plate body, of the first longitudinal beam and is suitable for being embedded into the middle cross beam;

and/or the part of the first longitudinal beam for dividing the plurality of first cavities is provided with a fastener, and the fastener is suitable for being connected and fixed with the cover body.

13. The battery pack case according to any one of claims 1, 2, 4 to 12, wherein an outer peripheral side of the frame is provided with an insulating protective layer and a first heat insulating layer, the insulating protective layer being provided between the frame and the first heat insulating layer.

14. The battery pack case according to any one of claims 1, 2, 4 to 12, wherein an epoxy coating is provided on an inner wall surface of the plate body; and/or a second heat-insulating layer is arranged on the outer wall surface of the plate body.

15. The battery pack box body according to claim 14, wherein the outer wall surface of the second insulating layer is provided with a protective plate, and the outer wall surface of the protective plate is coated with a PVC coating.

16. A battery pack is characterized by comprising a battery pack box body, a battery cell and a cover body, wherein the battery pack box body is the battery pack box body according to any one of claims 1-15, the cover body is arranged in the battery pack box body and seals an opening of the battery pack box body, and the battery cell is arranged in the battery pack box body.

17. A vehicle characterized by comprising the battery pack according to claim 16.

Images