CN214336838U - Power battery package and vehicle - Google Patents

Abstract

The utility model relates to a power battery pack and a vehicle, the power battery pack comprises an upper shell and a lower shell, a plurality of containing spaces for installing modules are arranged in the lower shell, a water cooling plate is arranged on the lower side surface of the modules, first installing structures for connecting the modules are arranged on two lateral walls of the containing spaces, second installing structures are arranged on two longitudinal opposite lateral walls of the containing spaces, the end parts of the water cooling plate in the transverse direction are bent downwards and extend outwards to form flanges, the flanges are connected with the corresponding second installing structures through first fasteners, the connecting surfaces of the first installing structures and the modules have height difference with the connecting surfaces of the second installing structures and the flanges in the height direction, so that form the clearance of dodging that is used for dodging first fastener between turn-ups and the module to make the water-cooling plate be located the part between two turn-ups and the module laminating. The problem that the structure of module and/or water-cooling board is fragile when vibration or impact takes place can be solved to this disclosure.

Description

Power battery package and vehicle

Technical Field

The disclosure relates to the technical field of power battery packs, in particular to a power battery pack and a vehicle.

Background

The modern automobile industry is revolutionarily changing, that is, the traditional fuel automobile is gradually replaced by a new energy automobile, wherein a pure electric automobile is emerging as one of the new energy automobiles, and a plurality of fuel automobile platforms directly replace an engine structure with a power battery pack structure.

Power battery package on the existing market is through setting up the water-cooling board in module below in order to be used for the module during operation temperature equilibrium, but the mounting means of water-cooling board is usually with the water-cooling board clamp locate the module with be used for between the installation piece of fixed module, this kind of mounting means causes the unstable structure of module and water-cooling board, when taking place vibration or when assaulting, mutual extrusion easily causes the structure of module and/or water-cooling board impaired between module and the water-cooling board.

SUMMERY OF THE UTILITY MODEL

The purpose of this disclosure is to provide a power battery package and vehicle, this power battery package can solve when taking place vibration or impact the easy impaired problem of structure of module and/or water-cooling board.

In order to achieve the above object, the present disclosure provides a power battery pack, which includes an upper case and a lower case with an upward opening, the upper case is fastened to an opening side of the lower case to define a cavity for accommodating a module, the lower case has a first installation space therein, the first installation space has a plurality of accommodation spaces for installing the module, and a water cooling plate is disposed on a lower side surface of the module; the accommodating space is provided with first mounting structures used for being connected with the modules on two transversely opposite side walls, the accommodating space is provided with second mounting structures on two transversely vertical longitudinally opposite side walls, the water cooling plate is bent downwards at the transverse end and extends outwards to form flanges, the flanges are connected with the corresponding second mounting structures through first fasteners, height differences exist between the first mounting structures and the connecting surfaces of the modules in the height direction and between the second mounting structures and the connecting surfaces of the flanges, so that avoidance gaps used for avoiding the first fasteners are formed between the flanges and the modules, and the parts of the water cooling plate between the two flanges are attached to the modules.

Optionally, two of the modules are arranged in the accommodating space at intervals along the transverse direction, the first mounting structure includes a first mounting block and a second mounting block arranged at two ends of the accommodating space with respect to two side walls opposite to the transverse direction, and ends of the modules in the transverse direction are respectively and correspondingly connected to the first mounting block and the second mounting block.

Optionally, the two sides of the flange opposite to the transverse direction are respectively provided with a first notch for avoiding the first mounting block.

Optionally, the first mounting block and the second mounting block are provided with connection points for connecting with the module, and a heat insulation gasket is arranged between the module and the connection points.

Optionally, a second fastening member is disposed on the second mounting block and located in a gap between the two modules in the transverse direction, and the second fastening member is connected to the water-cooling plate.

Optionally, a second opening for avoiding a connection point of the second mounting block and the module is formed in the water cooling plate.

Optionally, the second mounting structure includes a water-cooling plate mounting block, the water-cooling plate is connected to an upper surface of the water-cooling plate mounting block, so that a gap is formed between the water-cooling plate and the bottom wall of the accommodating space, and an elastic support structure abutting against the water-cooling plate and the bottom wall of the accommodating space is disposed in the gap.

Optionally, the power battery pack comprises a plurality of cross beams, the cross beams are arranged in the first installation space at intervals in the longitudinal direction and extend in the transverse direction, the first installation space is divided into a plurality of accommodating spaces through the plurality of cross beams, and the cross beams are of inverted-T-shaped structures.

Optionally, a heat conduction layer is filled between the water cooling plate and the module.

Another aspect of the present disclosure also provides a vehicle including the power battery pack described above.

Through above-mentioned technical scheme, this power battery package that openly provides promptly through independently assembling module and water-cooling board, when guaranteeing good control by temperature change effect for the structure of module and water-cooling board is more stable. Specifically, connect the module in first mounting structure, the turn-ups of water-cooling board is connected in second mounting structure, and the connection face of first mounting structure and module has the difference in height on the direction of height and between the connection face of second mounting structure and turn-ups, can make the water-cooling board when guaranteeing good control by temperature change effect with the module laminating like this, can form the clearance of dodging that is used for dodging first fastener between the turn-ups of water-cooling board and module, and then make water-cooling board and module can assemble each other independently and not influence. Therefore, the power battery package that this disclosure provided can be when guaranteeing the good control by temperature change effect to the module, the easy impaired problem of structure of module and/or water-cooling board when solving and taking place vibration or assault, therefore can improve the structural strength and the life of power battery package.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

fig. 1 is a perspective view of a power battery pack proposed in an exemplary embodiment of the present disclosure;

fig. 2 is an exploded view of a power battery pack proposed in an exemplary embodiment of the present disclosure;

fig. 3 is a perspective view of a lower case of the power battery pack proposed in an exemplary embodiment of the present disclosure;

FIG. 4 is an enlarged schematic view of position A of FIG. 3;

FIG. 5 is an enlarged schematic view of position B of FIG. 3;

fig. 6 is an exploded view of a partial structure of a power battery pack proposed in an exemplary embodiment of the present disclosure;

fig. 7 is an installation schematic view of a module and a water-cooling plate of a power battery pack proposed in an exemplary embodiment of the present disclosure;

fig. 8 is a schematic mounting diagram of a first mica plate and a second mica plate of the power battery pack proposed in the exemplary embodiment of the present disclosure;

fig. 9 is a schematic mounting diagram of the upper housing, the second mica plate and the cross beam of the power battery pack proposed in the exemplary embodiment of the present disclosure;

FIG. 10 is an enlarged schematic view of position C of FIG. 9;

fig. 11 is a schematic view of the installation position of the first bracket of the power battery pack proposed in the exemplary embodiment of the present disclosure;

fig. 12 is a perspective view of the power battery pack proposed in an exemplary embodiment of the present disclosure with the upper case and the second mica plate removed;

fig. 13 is a sectional view of parts in a second installation space of the power battery pack proposed in an exemplary embodiment of the present disclosure;

fig. 14 is a schematic mounting diagram of parts in a second mounting space of a power battery pack proposed in an exemplary embodiment of the present disclosure;

FIG. 15 is an exploded view of the components of FIG. 14;

FIG. 16 is an enlarged schematic view of position D of FIG. 15;

fig. 17 is an exploded view of the upper module, the lower module, and the upper water-cooled plate of the power battery pack proposed in the exemplary embodiment of the present disclosure.

Description of the reference numerals

1-an upper shell; 110-concave ribs; 111-a first via; 120-convex ribs; 2-a lower shell; 210-a first installation space; 211-an accommodation space; 212 — a first mounting structure; 2121-a first mounting block; 2122-a second mounting block; 2123-point of attachment; 2124-a second fastener; 213-a second mounting structure; 2131-water cooling plate installing block; 3-a module; 4-water cooling plate; 410-flanging; 411-a first gap; 420-a second gap; 5-a first fastener; 6-heat preservation gasket; 7-a resilient support structure; 8-a cross beam; 810-mica board mounting blocks; 811-third threaded hole; 812-a boss; 813-sealing rings; 820-U-shaped groove; 830-cable tray; 9-heat conducting layer; 10-a first mica plate; 11-a second mica plate; 1101-a first lower turn-up; 1102-second lower flanging; 1103 — a second via; 12-a third fastener; 13-a first scaffold; 14-a module holder; 141-a first mounting frame; 142-a second mounting bracket; 15-upper module; 16-a lower layer module; 17-mounting a bracket; 171-a riser; 172-a transverse plate; 173-third lower flanging; 174-a first connection; 175-a second connecting portion; 176-lightening holes; 18-BMS; 19-BDU; 20-a wire harness; 21-an explosion-proof valve; 22-third mica plate; 23-a second scaffold; 24-a fourth mica board; 25-upper water cooling plate; 26-water pipe joint.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, for convenience of description, a three-coordinate, i.e., XYZ coordinate system is defined for the power battery pack, wherein the Z direction is a vertical direction, and corresponds to a height direction of the power battery pack in a use state and also corresponds to a height direction of the vehicle in a use state; the Y direction is a transverse direction and corresponds to the width direction of the power battery pack in a use state and also corresponds to the width direction of the vehicle in the use state; the X direction is a longitudinal direction, and corresponds to a longitudinal direction of the power battery pack in a use state and also corresponds to a longitudinal direction of the vehicle in a use state. Unless otherwise stated, the terms of orientation such as "up" and "down" used herein refer to the up and down of the power battery in the height direction (vertical direction) in the use state. The "front and rear" correspond to the front and rear of the vehicle in the longitudinal direction (longitudinal direction) when the vehicle is in a driving state, wherein the "front" also corresponds to the first mounting space of the power battery pack being located on the side of the second mounting space in the longitudinal direction (longitudinal direction), and the "rear" also corresponds to the second mounting space of the power battery pack being located on the side of the first mounting space in the longitudinal direction (longitudinal direction). "inner and outer" refer to the inner and outer of the profile of the associated member. The terms "first," "second," and the like, are used for distinguishing one element from another, and do not necessarily have the order or importance.

The present disclosure will be further described with reference to the accompanying drawings and detailed description.

According to a first aspect of the present disclosure, a power battery pack is provided. Referring to fig. 1 to 7, the power battery pack includes an upper case 1 and a lower case 2 having an upward opening, the upper case 1 is fastened to an open side of the lower case 2 to define a cavity for accommodating the module 3, the lower case 2 has a first installation space 210 therein, the first installation space 210 has a plurality of accommodation spaces 211 for accommodating the module 3, and a water-cooling plate 4 is disposed on a lower side surface of the module 3; the accommodating space 211 is provided with first mounting structures 212 for connecting the module 3 on two lateral opposite side walls, the accommodating space 211 is provided with second mounting structures 213 on two longitudinal opposite side walls, the water-cooling plate 4 is arranged on the lateral end portion of the accommodating space, the end portion of the water-cooling plate is bent downwards and extends outwards to form a flange 410, the flange 410 is connected to the corresponding second mounting structure 213 through a first fastener 5, a height difference is formed between the connecting surface of the first mounting structure 212 and the module 3 and the connecting surface of the second mounting structure 213 and the flange 410 in the height direction, so that an avoiding gap for avoiding the first fastener 5 is formed between the flange 410 and the module 3, and the part of the water-cooling plate 4 located between the two flanges 410 is attached to the module 3.

Through above-mentioned technical scheme, the power battery package that this disclosure first aspect provided promptly through with module 3 and the independent assembly of water-cooling board 4, when guaranteeing good control by temperature change effect for module 3 and water-cooling board 4's structure is more stable. Specifically, connect module 3 in first mounting structure 212, turn-ups 410 of water-cooling plate 4 is connected in second mounting structure 213, and the face of being connected of first mounting structure 212 and module 3 has the difference in height between the face of being connected of second mounting structure 213 and turn-ups 410 in the direction of height, can make water-cooling plate 4 when guaranteeing good temperature control effect with the laminating of module 3 like this, can form the clearance of dodging that is used for dodging first fastener 5 between turn-ups 410 of water-cooling plate 4 and module 3, and then make water-cooling plate 4 and module 3 can assemble each other independently and do not influence. Therefore, the power battery package that this disclosure provided can be when guaranteeing the good control by temperature change effect to module 3, the easy impaired problem of structure of module 3 and/or water-cooling plate 4 when solving and taking place vibration or impact, therefore can improve the structural strength and the life of power battery package.

The first fastening member 5 may be configured in any suitable manner, for example, as shown in fig. 7, the first fastening member 5 may be a first bolt, and correspondingly, the second mounting structure 213 has a first threaded hole formed therein for cooperating with the first fastening member 5. In this way, the flange 410 of the water cooling plate 4 can be mounted on the second mounting structure 213 by means of bolts, and at this time, the avoiding gap between the flange 410 and the module 3 is used for avoiding the part of the first bolt protruding above the water cooling plate 4.

The number of modules 3 in each receiving space 211 can be set according to practical application requirements, for example, in some embodiments, as shown in fig. 2 to 5, two modules 3 are arranged in the receiving space 211 at intervals along the transverse direction, the first mounting structure 212 includes a first mounting block 2121 and a second mounting block 2122 arranged at two ends of the receiving space 211 relative to the two transversely opposite side walls, and the ends of the modules 3 in the transverse direction are respectively connected to the first mounting block 2121 and the second mounting block 2122. Thus, one end portion of the module 3 in the lateral direction is coupled to one of the first mounting blocks 2121, and the other end portion is coupled to the second mounting block 2122 to mount the module 3 in the accommodation space 211.

In some embodiments, referring to fig. 6, both sides of the flange 410 opposite to the transverse direction are opened with first notches 411 for avoiding the first mounting block 2121. Like this, when installation water-cooling board 4, can avoid the influence of first installation piece 2121 to installation water-cooling board 4 through the first opening 411 of seting up, also can avoid the friction between first installation piece 2121 and the water-cooling board 4, when improving assembly efficiency, can improve the reliability of power battery package structure.

In some embodiments, as shown with reference to fig. 3-5, each of the first mounting block 2121 and the second mounting block 2122 has a connection point 2123 for connecting with the module 3, wherein the connection point 2123 may be configured as a second threaded hole, such that the first mounting block 2121 and the second mounting block 2122 may be connected to the module 3 by bolting.

In some embodiments, referring to fig. 7, a thermal insulating spacer 6 is disposed between the module 3 and the connection point 2123. Thus, the heat loss of the module 3 caused by the direct contact between the module 3 and the first mounting block 2121 and the second mounting block 2122 can be effectively prevented by the heat insulating spacer 6.

Considering the fact that the middle portion of the water-cooled plate 4 may be deformed by its own weight and vehicle vibration, the structural strength of the power battery pack and the heat exchange with the module 3 are affected. Thus, in some embodiments, the second mounting block 2122 is provided with a second fastener 2124 located in the gap between the two modules 3 in the lateral direction, and the second fastener 2124 is connected to the water-cooled plate 4. Like this, connect water-cooling plate 4 in second installation piece 2122 through second fastener 2124, can play the supporting effect to water-cooling plate 4, prevent that its middle part from warping to increase power battery package's structural stability, make water-cooling plate 4 and module 3 keep good binding face simultaneously, in order to guarantee good temperature control effect. In addition, the second fastener 2124 is arranged in the gap between the two modules 3, so that the modules 3 can be mounted in an avoiding manner, and the gap space is fully utilized, so that extra mounting space can be prevented from being occupied. In addition, the second fastener 2124 can also play a role in positioning, so as to facilitate the installation and fixation of the water-cooling plate 4.

The second fasteners 2124 may be configured in any suitable manner, for example, in some embodiments, as shown in fig. 5, the second fasteners 2124 may be second bolts, and the second fasteners 2124 are pre-installed in pre-opened installation holes of the second installation block 2122 when the water cooling plate 4 is installed, so that the water cooling plate 4 is directly installed on the second installation block 2122 by nuts and second bolts when the water cooling plate 4 is installed. In another embodiment, the second fastener 2124 may also be a stud attached to the second mounting block 2122, and the water cooling plate 4 may also be mounted on the second mounting block 2122 by the engagement of the stud and the nut.

In some specific embodiments, referring to fig. 6, the water-cooling plate 4 is opened with a second notch 420 for avoiding a connection point 2123 of the second mounting block 2122 and the module 3. Like this, when installation water-cooling board 4, can avoid through this second breach 420 tie point 2123 to avoid water-cooling board 4 and module 3 to pile up the installation, can strengthen the structural stability of water-cooling board 4 and module 3.

In some embodiments, referring to fig. 3, 4 and 6, the second mounting structure 213 includes a water-cooling plate mounting block 2131, the water-cooling plate 4 is connected to an upper surface of the water-cooling plate mounting block 2131, so that a gap is formed between the water-cooling plate 4 and the bottom wall of the accommodating space 211, and an elastic support structure 7 abutting against the water-cooling plate 4 and the bottom wall of the accommodating space 211 is disposed in the gap. A certain gap is reserved between the water cooling plate 4 and the bottom wall of the accommodating space 211, so that the energy of bottom collision can be absorbed, and the module 3 is protected. The elastic support structure 7 is mounted in the gap to support and fix the cooling plate 4.

The elastic support structure 7 may be configured in any suitable manner, for example, in some embodiments, as shown in fig. 7, the elastic support structure 7 may be made of a support foam, which may be attached to the bottom wall of the receiving space 211 during installation, and may serve to support and fix the cooling plate 4.

In some specific embodiments, referring to fig. 7, a heat conduction layer 9 is filled between the water-cooling plate 4 and the module 3 to better ensure the temperature control effect between the water-cooling plate 4 and the module 3. Wherein, heat-conducting layer 9 can adopt heat-conducting glue, when the installation, scribbles heat-conducting glue between module 3 and cooling plate 4, when assembling module 3, flattens heat-conducting glue through the bounce of elastic support structure 7 and the gravity of module 3, is full of between module 3 bottom and the water-cooling plate 4.

In some embodiments, referring to fig. 3 and 8, the power battery pack includes a plurality of cross beams 8, the plurality of cross beams 8 are disposed in the first installation space 210 at intervals along the longitudinal direction and extend in the transverse direction, the first installation space 210 is divided into a plurality of accommodating spaces 211 by the plurality of cross beams 8, and the cross beams 8 are configured in an inverted T-shaped structure. In this way, by constructing the cross beams 8 into the inverted T-shaped structure and fixedly connecting the big end of the inverted T-shaped structure to the bottom plate of the lower shell 2, the strength of the bottom plate of the lower shell 2 can be effectively increased, the gap between the bottoms of two adjacent cross beams 8 can be reduced, and the bottom ball impact resistance of the lower shell is improved; in addition, the two ends of the cross beam 8 are respectively connected to the lower shell 2 about on the longitudinal opposite side beams, so that the overall strength of the power battery pack can be improved, the cross beam serves as a main bearing structure, deformation is resisted under the condition of side impact of the whole vehicle, and the safety is improved.

On the basis of the power battery pack provided according to the first aspect of the present disclosure, the present disclosure further provides a vehicle including the power battery pack provided according to the first aspect of the present disclosure, and having all the advantages thereof, and the present disclosure is not repeated herein.

It is considered that when thermal runaway occurs in the module 3 in one of the accommodation spaces 211, it is easy to transmit flame into the other accommodation space 211 to cause a chain reaction, resulting in a greater risk of loss and enlargement. Therefore, in order to prevent propagation of thermal runaway, the present disclosure may also employ the power battery pack provided according to the second aspect of the present disclosure, which will be described in detail below.

In a specific embodiment provided in a second aspect of the present disclosure, referring to fig. 1 to 10, a power battery pack is provided that includes an upper case 1 and a lower case 2 having an upward opening, the upper case 1 being fastened to an open side of the lower case 2 to define a cavity for accommodating a module 3, the lower case 2 having a first installation space 210 therein; the power battery package still includes a plurality of crossbeams 8, a plurality of crossbeams 8 set up in first installation space 210 along longitudinal separation ground to be used for separating first installation space 210 for a plurality of accommodation space 211 that are used for installing module 3, be provided with the first mica plate 10 that links firmly in the lateral wall of crossbeam 8 between module 3 and the crossbeam 8, the top of module 3 is provided with the second mica plate 11 that links firmly in crossbeam 8 and be used for covering module 3, the top butt of first mica plate 10 in the downside of second mica plate 11, in order to be arranged in separating module 3 in two adjacent accommodation space 211.

Through the above technical solution, that is, the power battery pack provided by the second aspect of the present disclosure, the second mica plate 11 is covered above the module 3, and the top end of the first mica plate 10 abuts against the lower side surface of the second mica plate 11, so as to form a relatively independent accommodating space 211 for separating the modules 3 in two adjacent accommodating spaces 211. Like this, when module 3 in an accommodation space 211 takes place thermal runaway, can effectively obstruct flame propagation to another accommodation space 211 through first mica plate 10 and second mica plate 11, and then can effectually prevent thermal runaway's propagation, reduce loss and risk, increase the security performance.

The connection mode of the first mica plate 10 and the cross beam 8 may be set in any suitable mode according to actual requirements, for example, the first mica plate 10 may be bonded to the cross beam 8, and may also be fixed to the cross beam 8 by fasteners such as bolts and buckles, which is not specifically limited in this disclosure.

In some embodiments, referring to fig. 1 to 3 and 9, a plurality of mica board mounting blocks 810 are disposed at intervals along the transverse direction at the top end of the cross beam 8, the upper housing 1 has a recessed rib 110 corresponding to the cross beam 8 and extending along the transverse direction, and the recessed rib 110 is connected to the second mica board 11 and the mica board mounting blocks 810 through a third fastener 12 to fix the second mica board 11 between the upper housing 1 and the cross beam 8. In this way, the concave rib 110 of the upper shell 1, the second mica plate 11 and the cross beam 8 can be fixed together by the third fastener 12, the structure is stable and firm, and the space occupied by separately fixing the second mica plate 11 can be reduced.

The third fastening member 12 may be configured in any suitable manner, for example, in some specific embodiments, as shown in fig. 9 and 10, the third fastening member 12 may be a third bolt, and accordingly, the recessed rib 110 defines a first through hole 111 for the third fastening member 12 to pass through, the second mica board 11 defines a second through hole 1103 for the third fastening member 12 to pass through, and the mica board mounting block 810 has a third threaded hole 811 threadedly engaged with the third fastening member 12. Thus, the second mica plate 11 can be fixed between the upper housing 1 and the cross member 8 by passing the third bolt through the first through hole 111 and the second through hole 1103 in sequence and then fitting the third threaded hole 811.

In some specific embodiments, referring to fig. 10, the top end of the mica board mounting block 810 is configured with a boss 812, the top end of the boss 812 abuts against the lower side surface of the concave rib 110 after passing through the second through hole 1103, the third threaded hole 811 is opened at the top end of the boss 812, and an annular groove is opened on the boss 812 around the third threaded hole 811, and a sealing ring 813 for sealing between the boss 812 and the concave rib 110 is arranged in the annular groove. In this way, by providing the sealing ring 813 at the connection between the boss 812 and the concave rib 110, the sealing effect of the upper case 1 and the power battery pack can be enhanced.

Referring to fig. 3 and 8, the portion of the cross beam 8 between two adjacent mica board mounting blocks 810 forms a U-shaped slot 820. In this way, because the two sides of the cross beam 8 are fixedly connected with the first mica plates 10 which are abutted against the lower side walls of the second mica plates 11, a good isolation effect can be formed, so that the U-shaped groove 820 is formed by removing the part between the two adjacent mica plate mounting blocks 810, and the weight reduction effect on the power battery pack can be achieved.

In some embodiments, as shown with reference to fig. 11, the second mica boards 11 are connected to the ends of the module 3 in the transverse direction by means of first brackets 13. In this way, the stability of the installation of the second mica boards 11 can be further increased by the first brackets 13, and the installation of the first brackets 13 can make full use of the space by using the structural features and the space of the ends of the module 3 itself without adding extra space.

The first bracket 13 may be configured in any suitable manner, for example, in some embodiments, as shown with reference to fig. 11, the first bracket 13 is configured as a U-shaped structure, and the two prongs on the open side of the U-shaped structure are respectively attached to the second mica board 11 and the module 3.

In some embodiments, referring to fig. 6 and 8, the second mica board 11 has a first lower flange 1101 bent downward and extending to the accommodating space 211 at an end in the lateral direction. In this way, the insulating effect of the second mica plate 11 on the accommodating space 211 can be further enhanced, and flame can be prevented from spreading out from the gap between the end of the second mica plate 11 and the lower housing 2 after thermal runaway.

The number of modules 3 in each accommodating space 211 can be set according to practical application requirements, for example, in some embodiments, as shown in fig. 2, 3 and 5, two modules 3 are arranged in the accommodating space 211 at intervals in the transverse direction, and a cable groove 830 for arranging a wire harness, a cooling water pipe and a copper bar is formed in the middle portion of each cross beam 8 corresponding to the gap between the two modules 3. Like this, can make full use of the clearance between two adjacent modules 3 through seting up cable groove 830 for arrange the pencil and the copper bar of connecting module 3 and connect the condenser tube of water-cooling board 4, be favorable to improving space utilization, reduce power battery package volume and improve energy density. In addition, the wiring harness, the cooling water pipe, the copper bar and the like are arranged in the middle of the lower shell 2, so that the wiring distance of the wiring harness, the cooling water pipe and the copper bar can be reduced, the arrangement operation is simple, and the use of a positioning piece can be reduced; when the side collision occurs, the dangers of short circuit of the wire harness, leakage of the water pipe and the like can be reduced, and the safety performance is improved.

In some specific embodiments, referring to fig. 3, the number of the first mica boards 10 is two, and the two first mica boards 10 are arranged at intervals along the transverse direction, and the gap between the two first mica boards 10 corresponds to the cable slot 830. Like this, set up through with two second mica plates 11 intervals for dodge pencil, condenser tube and copper bar, be convenient for install.

In some specific embodiments, as shown with reference to fig. 2, 6 and 8, the number of the second mica plates 11 is two, and the two second mica plates 11 are arranged at intervals along the transverse direction, and the gap between the two second mica plates 11 corresponds to the cable groove 830. Like this, set up through with two second mica plates 11 intervals for dodge pencil, condenser tube and copper bar, be convenient for install.

In some specific embodiments, referring to fig. 8, each of the opposite sides of the two second mica boards 11 has a second turned-down edge 1102 bent downward and extending to the accommodating space 211. In this way, it is possible to prevent to a certain extent the flame from propagating out from the gap between the two second mica boards 11 when thermal runaway occurs in the module 3.

In some specific embodiments, referring to fig. 1 and 2, the upper housing 1 has a rib 120 extending along the longitudinal direction, and the rib 120 corresponds to a gap between the two second mica boards 11 to form a channel for arranging the wire harness, the cooling water pipe and the copper bar together with the plurality of cable grooves 830 and the gap. Like this, through setting up protruding muscle 120, not only can form after assembling with lower casing 2 and be used for arranging the passageway of pencil, cooling water pipe and copper bar can also improve the structural strength of upper casing 1.

On the basis of the power battery pack provided according to the second aspect of the present disclosure, the present disclosure also provides a vehicle including the power battery pack provided according to the second aspect of the present disclosure, and having all the advantages thereof, and the present disclosure is not repeated herein. It should be noted here that the vehicle provided herein according to the second aspect of the present disclosure may be configured in the manner of the vehicle provided according to the first aspect of the present disclosure, but the present disclosure is not limited thereto, and may also be configured in other different manners to meet the requirements of practical applications.

In consideration of the fact that the arrangement of BDUs (Battery disconnection units), BMS (Battery Management systems), harnesses and the like of the power Battery pack occupies a large arrangement space in the power Battery pack, the number of modules in which the Battery pack can be arranged is limited, and a large amount of spare space is wasted. Therefore, in order to fully utilize the internal space of the power battery pack and increase the power of the whole pack, the present disclosure may also adopt the power battery pack provided according to the third aspect of the present disclosure, which will be described in detail below.

In a specific embodiment provided in a third aspect of the present disclosure, referring to fig. 1 to 3 and 12 to 17, a power battery pack is provided, which includes an upper case 1 and a lower case 2 having an upward opening, the upper case 1 is fastened to an open side of the lower case 2 to define a cavity for accommodating a module 3, the lower case 2 has a first mounting space 210 at a front end and a second mounting space 220 at a rear end arranged at intervals in a longitudinal direction, the first mounting space 210 has a plurality of accommodating spaces 211 for accommodating the module 3, and the second mounting space 220 is internally provided with an upper module 15 and a lower module 16, which are divided into an upper module 15 and a lower module 16 by a module bracket 14; the front end of the upper module 15 is connected to a mounting bracket 17, the mounting bracket 17 is provided with a BMS18, a BDU19, and a plurality of harnesses 20 in this order from the rear end to the front end, one end of each of the plurality of harnesses 20 is connected to the corresponding module 3, and the other end thereof is converged from the front end of the BDU19 and then passes over the BDU19 to be connected to the BMS 18.

Through the technical scheme, namely the power battery pack provided by the third aspect of the disclosure, firstly, the lower shell 2 is divided into the first installation space 210 located at the front end and the second installation space 220 located at the rear end, the plurality of modules 3 are orderly placed in the first installation space 210 through the plurality of accommodating spaces 211, the second installation space 220 is divided into the upper-layer module 15 and the lower-layer module 16 through the module support 14, more modules 3 can be arranged in the rear evacuation room of the whole vehicle, the endurance mileage of the whole vehicle can be improved, and the energy density is improved; in addition, the BMS18 and the BDU19 are arranged at the front end of the upper-layer module through the mounting bracket 17, so that the BMS18 and the BDU19 are prevented from occupying too much space, the space can be fully utilized, and the space utilization rate is improved; in addition, the wiring harness connecting the module 3 and the BMS18 is collected at the front end of the BDU19 and then jumps above the BDU19, so that the space utilization rate can be further improved and the reliability of the battery pack can be ensured. In conclusion, the power battery pack provided by the third aspect of the disclosure makes full use of the internal space thereof, is reasonable and compact in arrangement, can increase the electric quantity of the whole pack, improves the driving mileage of the whole vehicle, and improves the energy density, the space utilization rate and the safety performance of the battery pack.

In some embodiments, referring to fig. 3 and 14-16, the mounting bracket 17 includes a vertical plate 171 and a horizontal plate 172 both extending in the lateral direction, the vertical plate 171 and the horizontal plate 172 form an L-shaped bracket with the horizontal plate 172 on a side of the vertical plate 171 away from the upper module 15, the BMS18 is disposed in a vertical direction perpendicular to both the lateral direction and the longitudinal direction and is connected to the vertical plate 171, and the BDU19 is connected to the horizontal plate 172. In this way, configuring the mounting bracket 17 as an L-shaped bracket may not only reduce the occupied space, but may also serve to fix the BMS18 and the BDU19, respectively, so that the installation of the BMS18 and the BDU19 is more stable. In addition, with BMS18 along vertical arranging, be about to BMS18 vertical placement, can reduce occupation space, be convenient for simultaneously with jump BMU 19's pencil and be connected for BMS18 and BDU19 and pencil 20's arrangement is compacter, reasonable, improves space utilization.

In some specific embodiments, referring to fig. 14 and 16, the transverse plate 172 has a third downward turned edge 173 bent downward on a side away from the vertical plate 171 in the longitudinal direction, and a portion of the plurality of wire harnesses 20 collected at the front end of the BDU19 is fixedly connected to the third downward turned edge 173 by a fourth fastener. Thus, by fixedly connecting a portion of the wire harness collected at the front end of the BDU19 to the third down-turned flange 173, the height of the wire harness 20 can be reduced, a safe gap between the wire harness 20 and the upper case 1 can be ensured, and at the same time, the wire harness 20 can be reliably fixed.

The fourth fastener may be configured in any suitable manner for the purpose of securing a portion of the wiring harness at the front end of the BDU19 to the third downturn 173. For example, the fourth fastener may be a wire harness buckle, and the third lower flange 173 has a clip interface matching with the wire harness buckle. Like this, just can be used the pencil buckle is in the joint interface after restricting pencil 20, the pencil buckle can adopt current buckle that is used for fixed pencil, and this disclosure is no longer repeated here.

In some embodiments, as shown with reference to fig. 15 and 16, the risers 171 have first connecting portions 174 connected to the upper module 15 and the cross plate 172 has second connecting portions 175 connected to the module support 14. In this way, the coupling strength and structural stability between the mounting bracket 17, the upper module 15, and the module bracket 14 can be enhanced by coupling the vertical plates 171 and the horizontal plates 172 to the upper module 15 and the module bracket 14, respectively. Specifically, the first coupling parts 174 may be configured as first mounting plates coupled to ends of the upper module 15 in the lateral direction, and the second coupling parts 175 may be configured as second mounting plates coupled to the module bracket 14, which may be coupled to the upper module 15 and the module bracket 14, respectively, by means of bolts.

In some embodiments, referring to fig. 16, the mounting bracket 17 is provided with a plurality of lightening holes 176 for lightening. Wherein the position and number of the lightening holes 176 can be set according to the practical application requirement, and the disclosure is not limited in detail herein.

In some embodiments, as shown with reference to fig. 6 and 13, a third mica board 22 is disposed between the mounting bracket 17 and the upper module 15 and is fixedly connected to the mounting bracket 17. Thus, the third mica plate 22 can prevent flame propagation when thermal runaway occurs in the upper module 15, thereby avoiding short circuit and the like and increasing safety performance. Wherein the third mica board can be connected to the riser 171 of the mounting bracket 17 by means of adhesion.

In some embodiments, as shown in fig. 13, a fourth mica board 24 for covering the upper module 15 is connected to the upper side of the upper module 15 through a second bracket 23. In this way, the fourth mica plate 24 can prevent flame from spreading from above the upper module 15 when thermal runaway occurs in the upper module 15, and the safety performance of the power battery pack can be enhanced.

The second bracket 23 may be configured in any suitable manner, for example, as shown in fig. 14, the second bracket 23 is configured as a U-shaped structure, and two forks on the opening side of the U-shaped structure are respectively attached to the fourth mica plate 24 and the end of the upper module 15 in the transverse direction.

In some embodiments, as shown in fig. 15 and 17, an upper water cooling plate 25 attached to the upper module 15 is attached to the lower side of the upper module 15, a water pipe connector 26 located at the front end of the lower module 16 is disposed below the mounting bracket 17, and an interface of the upper water cooling plate 25 is disposed downward and connected to the water pipe connector 26. In this way, the upper water-cooling plate 25 is provided to exchange heat with the upper module 15, thereby ensuring cooling performance. In addition, the interface of the upper water-cooling plate 25 is arranged downwards, and the water pipe joint 26 is arranged in the space at the front end of the lower module 16, so that the idle space at the front end of the lower module 16 can be fully utilized, the space utilization rate is improved, and the internal space of the power battery pack is saved.

The module support 14 may be configured in any suitable manner, for example, in some embodiments, as shown in fig. 17, the module support 14 includes two first mounting brackets 141 symmetrically arranged with respect to the longitudinal direction and a second mounting bracket 142 stopped at the rear end of the lower module 16, the two first mounting brackets 141 are used for fixedly connecting to the lower module 16, and the upper ends of the two first mounting brackets 141 are used for connecting to two ends of the upper module 15 in the transverse direction, respectively. In this way, the first mounting bracket 141 may be used to fix the lower module 16 and the upper module 15, respectively, and the second mounting bracket 142 may be used to prevent the lower module from moving in the longitudinal direction.

In some specific embodiments, as shown in fig. 17, both ends of the upper water-cooling plate 25 in the lateral direction may be respectively connected to the corresponding first mounting brackets 141 for supporting the upper water-cooling plate 25; the middle portion of the upper water-cooling plate 25 may be coupled to the second mounting bracket 142 to hold the middle portion of the upper water-cooling plate 25 against deformation. The connection mode of the upper water cooling plate 25 and the first and second mounting brackets 141 and 142 can be a bolt connection mode.

In some embodiments, the upper housing 1 is provided with an explosion-proof valve 21 at a position corresponding to the upper module 15, and the number of the explosion-proof valves 21 may be multiple, for example, 4 as shown in fig. 1 and 2. Can increase the displacement through setting up a plurality of explosion-proof valves 21, when taking place thermal runaway, gaseous explosion-proof valve 21 department discharge can be followed, and exhaust passage is many, can further promote the security performance.

On the basis of the power battery pack provided according to the third aspect of the present disclosure, the present disclosure also provides a vehicle including the power battery pack provided according to the third aspect of the present disclosure, and having all the advantages thereof, and the present disclosure is not repeated herein. It should be noted here that the vehicle provided according to the third aspect of the present disclosure may be configured in the manner of the vehicle provided according to the first aspect and/or the second aspect of the present disclosure, but the present disclosure is not limited thereto, and may also be configured in other different manners to meet the requirements of practical applications.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, the power battery packs provided according to the first, second, and third aspects of the present disclosure may be individually configured in their own schemes, may be configured by combining the schemes of the power battery packs provided according to any two aspects, and may be configured by combining all the schemes of the power battery packs provided according to the three aspects, so as to meet the requirements of practical applications. Namely: the various features described in the foregoing detailed description may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, various possible combinations will not be separately described in this disclosure.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims (10)

1. A power battery pack, characterized in that the power battery pack comprises an upper shell (1) and a lower shell (2) with an upward opening, the upper shell (1) is buckled with the opening side of the lower shell (2) to define a cavity for accommodating a module (3), a first installation space (210) is arranged in the lower shell (2), the first installation space (210) is provided with a plurality of accommodating spaces (211) for installing the module (3), and a water cooling plate (4) is arranged on the lower side surface of the module (3);

wherein, the two side walls of the accommodating space (211) opposite to each other in the transverse direction are provided with first mounting structures (212) for connecting the module (3), the two side walls of the accommodating space (211) opposite to each other in the longitudinal direction perpendicular to the transverse direction are provided with second mounting structures (213), the end part of the water cooling plate (4) in the transverse direction is bent downwards and extends outwards to form a flange (410), the flange (410) is connected to the corresponding second mounting structure (213) through a first fastener (5), and the connecting surfaces of the first mounting structures (212) and the module (3) have a height difference with the connecting surfaces of the second mounting structures (213) and the flange (410) in the height direction, so that an avoiding gap for avoiding the first fastener (5) is formed between the flange (410) and the module (3), and the part of the water cooling plate (4) between the two flanges (410) is attached to the module (3).

2. The power battery pack according to claim 1, wherein two of the modules (3) are arranged at intervals in the lateral direction in the accommodating space (211), the first mounting structure (212) includes a first mounting block (2121) and a second mounting block (2122) in between provided at both ends of the accommodating space (211) with respect to the laterally opposite side walls, and ends of the modules (3) in the lateral direction are respectively connected to the first mounting block (2121) and the second mounting block (2122).

3. The power battery pack according to claim 2, wherein the two transversely opposite sides of the turned edge (410) are provided with first notches (411) for avoiding the first mounting block (2121).

4. A power pack according to claim 2, wherein the first mounting block (2121) and the second mounting block (2122) each have a connection point (2123) for connection to the module (3), and wherein a thermal insulating spacer (6) is provided between the module (3) and the connection point (2123).

5. A power battery pack according to claim 2, wherein the second mounting block (2122) is provided with a second fastener (2124) in a gap between the two modules (3) in the transverse direction, the second fastener (2124) being connected to the water-cooled plate (4).

6. The power battery pack as claimed in claim 2, wherein the water cooling plate (4) is provided with a second notch (420) for avoiding a connection point (2123) of the second mounting block (2122) and the module (3).

7. The power battery pack according to claim 1, wherein the second mounting structure (213) comprises a water-cooling plate mounting block (2131), the water-cooling plate (4) is connected to the upper surface of the water-cooling plate mounting block (2131) so that a gap is formed between the water-cooling plate (4) and the bottom wall of the accommodating space (211), and an elastic support structure (7) abutting against the water-cooling plate (4) and the bottom wall of the accommodating space (211) is arranged in the gap.

8. The power battery pack according to claim 1, characterized in that the power battery pack comprises a plurality of cross beams (8), the plurality of cross beams (8) are arranged in the first installation space (210) at intervals along the longitudinal direction and each extend along the transverse direction, the first installation space (210) is divided into a plurality of accommodating spaces (211) by the plurality of cross beams (8), wherein the cross beams (8) are configured into an inverted T-shaped structure.

9. The power battery pack according to any one of claims 1-8, characterized in that a heat conducting layer (9) is filled between the water-cooled plate (4) and the module (3).

10. A vehicle, characterized in that the vehicle comprises a power battery pack according to any one of claims 1-9.

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