CN214898690U - Power battery package and car - Google Patents

Abstract

The utility model is suitable for a new forms of energy technical field provides a power battery package and car, and frame construction and bottom plate fixed connection form a plurality of chambeies that hold. The plurality of electric connecting pieces are respectively arranged on two opposite sides of the inner wall of the accommodating cavity and connected with the frame structure, and two adjacent electric connecting pieces are arranged in an insulating mode. The battery module comprises an electric core, a support and a confluence piece, wherein the two ends of the electric core are respectively connected with the support, the confluence piece is arranged on one side of the support, which is deviated from the electric core, and is electrically connected with the electric core, and the confluence piece and the support are respectively detachably connected with corresponding electric connecting pieces. The utility model provides a power battery package, the piece of converging through with electric core both ends and support can be dismantled with electric connector respectively and be connected, and because electric connector is connected with frame construction for battery module can dismantle with electric connector and be connected, when one of them battery module takes place unusually, only needs to dismantle single battery module and change, does not influence the electric connector of being connected with frame construction.

Description

Power battery package and car

Technical Field

The utility model belongs to the technical field of the new forms of energy, more specifically say, relate to a power battery package and car.

Background

Along with the popularization of electric automobiles, the electric automobiles are more and more popular with the majority of users. The power battery is used as a key part of the electric automobile and can provide power for the electric automobile.

The current power battery pack is generally formed by connecting a plurality of battery modules in series, wherein a battery core is assembled into a module, and then the module is placed in a box body. Wherein, the series connection between electric core and the electric core is realized through laser beam welding, consequently has a slice or several electric cores to appear when unusual in the module, and the inside electric core of module can't be changed, leads to whole module all to scrap, then enters into with new module of replacement, causes unnecessary extravagant.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the utility model is to provide a power battery package and car to the electric core of solving current power battery package can not dismantle, leads to the condemned technical problem of whole module.

In order to achieve the above object, the utility model adopts the following technical scheme: provided is a power battery pack including:

a base plate;

the frame structure is fixedly connected with the bottom plate and is provided with a plurality of accommodating cavities;

the plurality of electric connecting pieces are respectively arranged on two sides of the inner wall of the accommodating cavity and connected with the frame structure, and two adjacent electric connecting pieces are arranged in an insulating way; and

a plurality of battery module, a plurality of battery module set up in holding the intracavity, and battery module includes electric core, support and confluence piece, and the both ends of electric core are connected with the support respectively, and the piece that converges sets up in the one side that deviates from electric core of support to be connected with electric core electricity, confluence piece and support can be dismantled with the electric connector that corresponds respectively and be connected.

Through adopting above-mentioned technical scheme, can dismantle with electric connector and be connected respectively through the piece of converging with electric core both ends and support, and because electric connector is connected with frame construction to make battery module can dismantle with electric connector and be connected, when one of them battery module takes place unusually, only need dismantle single battery module, change again, and do not influence the electric connector who is connected with frame construction.

Optionally, the bracket is sequentially provided with an accommodating hole and a through hole along the axial direction of the bracket, the accommodating hole is communicated with the through hole, and one side of the bracket facing the bottom plate is connected with the electric connector;

one end of the confluence sheet is bent towards the bracket and is positioned between the electric connecting piece and the bracket, and a first mounting hole is formed in the confluence sheet;

the electric connecting piece is connected with a first nut;

the accommodating hole, the through hole, the first mounting hole and the first nut are coaxially arranged;

the power battery package still includes:

and the bolt sequentially penetrates through the accommodating hole, the through hole and the first mounting hole to be screwed with the first nut.

By adopting the technical scheme, the bolt sequentially penetrates through the accommodating hole, the through hole and the first mounting hole to be screwed with the first nut, so that the bus bar and the electric connecting piece are tightly attached to each other; on the other hand, realized support and the connection of dismantling of converging piece and electric connector, when battery module was dismantled to needs, only need rotatory bolt, take off battery module can.

Optionally, the bolt comprises:

the head part is accommodated in the accommodating hole;

the rod part is connected with one end, facing the accommodating hole, of the head part, and the rod part penetrates through the through hole to be connected with the first nut in a screwing mode.

By adopting the technical scheme, because the bolt is used for locking the bus bar and the electric connecting piece, the head of the bolt is also electrified with high voltage, the head of the bolt is accommodated in the accommodating hole, and the head of the bolt is ensured to have enough electric clearance with the upper end part of the battery module.

Optionally, the support is a plastic part, a metal sleeve is embedded in the support, the metal sleeve is arranged at the joint of the accommodating hole and the through hole, two ends of the metal sleeve are respectively located in the accommodating hole and the through hole, the head is abutted to the end of the metal sleeve, and the rod penetrates through the metal sleeve.

Through adopting above-mentioned technical scheme, set up the support into the plastic part, avoid two adjacent battery module short circuits, inlay the metal covering and locate the support in, mainly used bears the locking force of bolt, prevents that the bolt from making the support be heated and become soft because of the heavy current through leading to the temperature to rise to lead to bolt torsion decay.

Optionally, an opening is formed in the bracket, the opening is arranged corresponding to the electric connecting piece, the electric connecting piece is accommodated in the opening, and one end of the bus sheet is bent towards the opening and connected between the bracket and the electric connecting piece.

By adopting the technical scheme, the opening for accommodating the electric connecting piece is formed in the support, so that the electric connecting piece is prevented from occupying the space of the frame structure.

Optionally, the frame structure comprises:

the frame is arranged around the bottom plate in a surrounding manner;

the first beams extend along a first direction, the first beams are arranged at intervals along a second direction which forms a preset angle with the first direction, and two ends of each first beam are respectively abutted with the frame;

the second beams extend along the second direction, the second beams are arranged at intervals along the first direction, the second beams are spliced with the first beams to form a plurality of accommodating cavities, and the surfaces of the second beams, which are far away from the bottom plate, are connected with a plurality of electric connecting pieces; and

the third beams are arranged on two sides of the second beam respectively, are close to the frame and are parallel to the second beam, and the surfaces of the third beams, which are far away from the bottom plate, are connected with electric connecting pieces;

the supports and the bus bars at the two ends of the battery module battery core are detachably connected with the electric connecting pieces on the second beam and the electric connecting pieces on the third beam respectively.

Through adopting above-mentioned technical scheme, through pegging graft the second roof beam with first roof beam, increased the intensity of power battery package, set up electric connector respectively on the both sides of second roof beam and third roof beam for the support and the busbar at battery module electricity core both ends can be dismantled with electric connector on the second roof beam and the electric connector on the third roof beam respectively and be connected, when dismantling the connection on electric connector with battery module, have realized the series-parallel connection between two adjacent battery modules.

Optionally, the second beam comprises:

a through groove is formed in one side, facing the bottom plate, of the first plate body; and

the second plate body is arranged on one side of the first plate body facing the bottom plate and is in orthogonal connection with the first plate body, and an electric connecting piece is arranged at the position of the second plate body, which avoids the first plate body;

the power battery package still includes:

the first insulating part is arranged on the second plate body, a plurality of first mounting grooves are arranged on the first insulating part at intervals, electric connecting pieces are correspondingly arranged in the first mounting grooves, the first insulating part penetrates through the through grooves, the two ends of the first insulating part extend out of the first beam at the same side so that the electric connecting pieces close to the end parts of the first insulating part are electrically connected with an external power supply, and the first insulating part is accommodated in the corresponding opening; and

the second insulating part is arranged on the third beam, a plurality of second mounting grooves are formed in the second insulating part at intervals, electric connecting pieces are correspondingly arranged in the second mounting grooves, and the second insulating part is accommodated in the corresponding opening.

By adopting the technical scheme, the first installation grooves which are arranged at intervals are formed in the first insulating part, so that the two adjacent electric connecting pieces are arranged in an insulating way; the second insulating piece is further provided with a plurality of second mounting grooves which are arranged at intervals, so that two adjacent electric connecting pieces are arranged in an insulating mode, two ends of the first insulating piece extend out at the same side, the electric connecting pieces at the end part of the first insulating piece can be electrically connected with an external power supply, when the supports at two ends of the battery core and the bus plate battery module are respectively electrically connected with the electric connecting pieces on the first insulating piece and the second insulating piece, the current of the external power supply sequentially passes through the electric connecting pieces at one end of the first insulating piece, the battery module, the electric connecting pieces on the second insulating piece, the battery module and the electric connecting pieces at the other end of the first insulating piece, and a complete loop is formed; when the first insulating part and the second insulating part are respectively accommodated in the corresponding openings, the first insulating part and the second insulating part are prevented from occupying the space of the frame structure.

Optionally, the second insulating part is fixedly connected with the third beam, a second nut is embedded in one side, away from the electric connecting piece, of the second insulating part, a third mounting hole is formed in the third beam, the third mounting hole corresponds to the second nut, and the third mounting hole is a lower counter bore.

Through adopting above-mentioned technical scheme, the connecting piece through the screw passes the third mounting hole and is connected with the second nut to fix the second insulating part on the third roof beam, set up the third mounting hole into counter bore down, avoid the head of connecting pieces such as screw to expose the third mounting hole, influence the installation roughness of bottom plate.

Optionally, the electrical connector further comprises an elastic member, the elastic member is connected with the electrical connector, and an insertion groove is formed on the elastic member; the power battery package still includes:

the flexible circuit board, flexible circuit board are branch branching structure, and flexible circuit board includes wiring portion and a plurality of grafting portion, and wiring portion sets up in electric connector's top, and wiring portion extends along the second direction, and each grafting portion is buckled from one side of wiring portion towards electric connector's direction and is extended, and grafting portion inserts and locates in the inserting groove.

By adopting the technical scheme, the fixing of the flexible circuit board is realized by inserting the inserting part on the flexible circuit board and the elastic piece on the electric connecting piece, and the elastic piece is connected with the electric connecting piece, so that on one hand, the voltage of each battery module and the temperature of the electric connecting piece can be acquired by the wiring part, and the sampling cost by adopting a welding mode is reduced; on the other hand, when the battery module is replaced, the flexible circuit board does not need to be detached.

The utility model also provides an automobile, including foretell power battery package.

The utility model provides a beneficial effect of car lies in: the junction piece and the support at the two ends of the battery core are detachably connected with the electric connecting piece respectively, and the electric connecting piece is connected with the frame structure, so that the battery modules are detachably connected with the electric connecting piece, when one of the battery modules is abnormal, only one battery module needs to be detached and replaced, and the electric connecting piece connected with the frame structure is not affected.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic perspective view of a power battery pack provided in an embodiment of the present invention;

fig. 2 is a schematic diagram of an explosion structure of a power battery pack according to an embodiment of the present invention;

fig. 3 is a schematic perspective view of a battery module according to an embodiment of the present invention;

fig. 4 is a schematic perspective view of a bracket and a bus bar according to an embodiment of the present invention;

fig. 5 is a schematic cross-sectional structural view of a bracket and a bus bar provided in an embodiment of the present invention;

fig. 6 is a schematic perspective view of an electrical connector, a first nut, and a spring plate according to an embodiment of the present invention;

FIG. 7 is a partially enlarged view of portion A of FIG. 6;

fig. 8 is a schematic partial structural view of a plurality of battery modules according to an embodiment of the present invention;

fig. 9 is a schematic view of a partial structure of a battery module according to an embodiment of the present invention;

fig. 10 is a schematic partial structure diagram of the power battery pack provided by the embodiment of the present invention, in which one battery module is removed;

fig. 11 is a schematic top view of a power battery pack according to an embodiment of the present invention;

FIG. 12 is a schematic view of the partial cross-sectional structure of FIG. 11 taken along line A-A;

FIG. 13 is a schematic view of the partial cross-sectional structure of FIG. 11 taken along line B-B;

FIG. 14 is an enlarged partial view of portion B of FIG. 13;

fig. 15 is a schematic top view of a power battery pack removing battery module according to an embodiment of the present invention;

fig. 16 is a schematic view of a partial explosion structure of a frame structure according to an embodiment of the present invention;

fig. 17 is a partial schematic structural view of a first insulating member or a second insulating member according to an embodiment of the present invention;

fig. 18 is a schematic view showing a partial three-dimensional structure of the first insulating member and the electrical connecting member or the second insulating member and the electrical connecting member according to the embodiment of the present invention after being assembled;

fig. 19 is a partial perspective view of the first insulator and the electrical connector after assembly or the second insulator and the electrical connector after assembly according to the embodiment of the present invention;

fig. 20 is a schematic perspective view of a frame structure according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

1-a bottom plate;

2-a frame structure; 20-a containment chamber; 21-a frame; 211-clearance piece; 2110-groove structure; 22-a first beam; 221-a first through groove; 222-a second through groove; 223-a first mating groove; 23-a second beam; 231-a first plate body; 2310-a through groove; 2311-a second plug groove; 232-a second plate body; 24-a third beam; 241-a third mounting hole;

31-an electrical connection; 310-a second mounting hole; 32-a first nut; 33-an elastic member; 330-a plug groove; 331-a connecting portion; 332-a bending part;

41-a battery module; 412-cell; 413-a tab; 414-a scaffold; 4141-an accommodation hole; 4142-a through-hole; 4143-open mouth; 4144-fixed slots; 415-bus bar; 4151-first mounting hole; 416-a metal sleeve; 417-an insulator;

5-a first insulator; 51-first section; 52-a second segment; 53-third section; 54-a first mounting groove;

6-a second insulator; 61-a second mounting groove; 62-a second nut;

7-a flexible circuit board; 71-a wiring portion; 72-a plug-in part;

8-bolt; 81-head; 82-a rod portion; l1-first direction; l2-second direction.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element. 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.

The embodiment of the present invention provides a power battery pack. The power battery pack is suitable for a high-voltage loop battery system, and means that a battery module is connected in a series/parallel connection mode and integrally mounted on an automobile by using a shell seal sample meeting various requirements.

Specifically, with particular reference to fig. 1 to 4, the power battery pack in the present embodiment includes a base plate 1, a frame structure 2, a plurality of electrical connectors 31, and a plurality of battery modules 41. Wherein, the frame structure 2 is fixedly connected with the bottom plate 1 to form a plurality of accommodating cavities 20, and a plurality of electric connectors 31 are arranged in each accommodating cavity 20. The plurality of electrical connectors 31 are respectively arranged on two sides of the inner wall of the accommodating cavity 20, that is, the plurality of electrical connectors 31 are respectively arranged on two oppositely arranged side walls of the accommodating cavity 20, of course, the plurality of electrical connectors 31 can also be respectively arranged on the bottom wall of the accommodating cavity 20, oppositely arranged and connected with the frame structure 2, so that the electrical connectors 31 and the box body are integrated into a whole.

Further, the battery module 41 is disposed in the accommodating cavity 20, the battery module 41 includes a battery cell 412, a bracket 414 and a bus bar 415, two ends of the battery cell 412 are respectively connected with the bracket 414, a fixing groove 4144 is formed in the bracket 414, the battery cell 412 is accommodated in the fixing groove 4144 for fixing the battery cell 412, the bus bar 415 is disposed on one side of the bracket 414 away from the battery cell 412 and is electrically connected with the battery cell 412, and the bus bar 415 and the bracket 414 are respectively detachably connected with the corresponding electrical connector 31.

The specific installation process is as follows:

firstly, with further reference to fig. 8 to 10, the electrical connectors 31 are placed on two sides of the inner wall of the accommodating cavity 20 and connected with the frame structure 2, after the electrical connectors 31 are installed, the battery modules 41 are sequentially placed in the accommodating cavity 20, so that the bus bars 415 and the brackets 414 at two ends of the battery modules 41 are detachably connected with the electrical connectors 31 on two sides of the accommodating cavity 20, then the other battery modules 41 are sequentially placed, and finally, the power is supplied, the adjacent battery modules 41 form a series-parallel connection relationship through the electrical connectors 31, and further, the battery modules 41 in the two adjacent accommodating cavities 20 also form a series-parallel connection relationship.

The utility model provides a power battery package, compared with the prior art, can dismantle with electric connector 31 respectively through bus bar 415 and support 414 with electric core 412 both ends and be connected, and because electric connector 31 is connected with frame construction 2 to make battery module 41 can dismantle with electric connector 31 and be connected, when one of them battery module 41 takes place unusually, only need to dismantle single battery module 41 get off, change again, and do not influence the electric connector 31 of being connected with frame construction 2.

Further, with reference to fig. 3 and 8, the number of the battery cells 412 is plural, and the plural battery cells 412 are electrically connected through tabs 413 at two ends of the battery cells 412, so that the battery cells 412 in each battery module 41 are connected in parallel. The positive and negative poles of two adjacent battery modules 41 are different, that is, the positive pole of one battery module 41 corresponds to the negative pole of the other battery module 41 in the two adjacent battery modules 41, and the two adjacent battery modules 41 are connected in series through the electric connector 31, so that the battery modules 41 in the two adjacent accommodating cavities 20 are connected in series through the electric connector 31. In order to prevent the adjacent two battery modules 41 from contacting and short-circuiting, an insulating member 417 is provided between the adjacent two battery modules 41.

Preferably, the insulating member 417 is an insulating foam, which prevents collision between the adjacent two battery modules 41, on the one hand, and plays a role of insulation, on the other hand.

Specifically, the electrical connection member 31 has a straight-line plate-shaped structure, and a metal member with good electrical conductivity, such as silver, copper, gold, or nickel, may be used for the electrical connection member 31. The silver has good conductivity, copper, gold and nickel are used secondly, the conductivity refers to the current conduction capability of an object, and the conductivity of the metal piece refers to the remote migration of electrons or ions in the metal piece under the action of an electric field.

With reference to fig. 5, 6 and 12, the holder 414 is sequentially provided with an accommodating hole 4141 and a through hole 4142 along the axial direction thereof, the accommodating hole 4141 is communicated with the through hole 4142, and the side of the holder 414 facing the base plate 1 is connected to the electrical connector 31. One end of the bus bar 415 is bent towards the bracket 414 and is located between the electrical connector 31 and the bracket 414, and the bus bar 415 is provided with a first mounting hole 4151. The first nut 32 is connected to the electric connector 31, and the receiving hole 4141, the through hole 4142, the first mounting hole 4151, and the first nut 32 are coaxially disposed. The power battery pack further comprises a bolt 8, and the bolt 8 is screwed with the first nut 32 through the accommodating hole 4141, the through hole 4142 and the first mounting hole 4151 in sequence, so that on one hand, the bus bar 415 is tightly attached to the electric connecting piece 31, and the electric connection relation is realized; on the other hand, the detachable connection between the bracket 414 and the bus bar 415 and the electric connecting member 31 is realized, and when the battery module 41 needs to be detached, the bolt 8 only needs to be rotated to remove the battery module 41.

Specifically, the electric connector 31 is provided with a second mounting hole 310 at a position corresponding to the first nut 32, one end of the first nut 32 is connected to a side of the electric connector 31 away from the manifold piece 415 and is provided corresponding to the second mounting hole 310, and the bolt 8 sequentially passes through the receiving hole 4141, the through hole 4142, the first mounting hole 4151 and the second mounting hole 310 and is screwed with the first nut 32. The number of the first nuts 32 is two, and correspondingly, the number of the second mounting holes 310 is two, and the first nuts 32 are press-riveted to the electrical connector 31 by means of press-riveting.

Further, referring to fig. 5, 11 and 12, the bolt 8 includes a head portion 81 and a shaft portion 82. The head 81 is accommodated in the accommodating hole 4141, the rod 82 is connected to an end of the head 81 facing the accommodating hole 4141, and the rod 82 is screwed to the first nut 32 through the through hole 4142. The receiving holes 4141 are provided to receive the heads of the bolts 8, and since the bolts 8 are used to lock the bus bar 415 and the electrical connection member 31, the heads 81 of the bolts 8 are also charged with high voltage, and the receiving holes 4141 are provided such that the upper surfaces of the heads 81 are positioned in the receiving holes 4141, on the one hand, to facilitate the installation of other components above the battery module 41, and on the other hand, to ensure sufficient electrical clearance between the heads 81 and the components above the battery module 41.

In an embodiment of the present application, with reference to fig. 5, 11 and 12, the bracket 414 is a plastic component, a metal sleeve 416 is embedded in the bracket 414, the metal sleeve 416 is disposed at a connection position of the receiving hole 4141 and the through hole 4142, two ends of the metal sleeve 416 are respectively located in the receiving hole 4141 and the through hole 4142, the head portion 81 abuts against an end portion of the metal sleeve 416, and the rod portion 82 passes through the metal sleeve 416. The brackets 414 are plastic members, so that the short circuit between the two adjacent battery modules 41 caused by the contact of the brackets 414 is avoided due to the contact of the brackets 414 of the two adjacent battery modules 41. The metal sleeve 416 is mainly used for bearing the locking force of the bolt 8, and prevents the bolt 8 from being heated and melted by the temperature rise caused by the passing of a large current, so that the torsion of the bolt 8 is attenuated, and the battery module 41 is shaken.

Preferably, the metal sleeve 416 is a steel sleeve, and the bolt 8 is placed so that the bracket 414 is softened by heat due to the temperature rise caused by the passing of a large current.

Further, referring to fig. 4, 5, 13 and 14, the bracket 414 is opened with an opening 4143, the opening 4143 is disposed corresponding to the electrical connector 31, the electrical connector 31 is accommodated in the opening 4143, one end of the bus bar 415 is bent toward the opening 4143 and connected between the bracket 414 and the electrical connector 31, that is, the electrical connector 31 and the bus bar 415 are both accommodated in the opening 4143, so that the space of the battery module 41 is fully utilized and the electrical connector 31 is prevented from occupying the space of the frame structure 2.

Further, referring to fig. 1 and 2, the frame structure 2 includes a frame 21, a plurality of first beams 22, a plurality of second beams 23, and at least two third beams 24. Wherein, the frame 21 is arranged around the bottom plate 1; each first beam 22 extends along the first direction L1, the plurality of first beams 22 are disposed at intervals along the second direction L2 which forms a preset angle with the first direction L1, the preset angle may be 90 degrees, and both ends of each first beam 22 are abutted to the side frame 21. Each second beam 23 extends along the second direction L2, the plurality of second beams 23 are arranged at intervals along the first direction L1, the second beams 23 are inserted into the first beams 22 to form a plurality of accommodating cavities 20, and a plurality of electrical connectors 31 are connected to the surface of each second beam 23 facing away from the bottom plate 1. At least two third beams 24 are respectively arranged at two sides of the second beam 23, the third beams 24 are close to the frame 21 and are parallel to the second beam 23, and the surface of the third beams 24 departing from the bottom plate 1 is connected with an electric connector 31. The brackets and the bus bars at the two ends of the battery cell are fixedly connected with the electric connecting piece 31 on the second beam 23 and the electric connecting piece 31 on the third beam 24 respectively.

Specifically, with further reference to fig. 15 and 16, the first beam 22 is provided with a plurality of first insertion grooves 223 along the length direction thereof, the second beam 23 is provided with a plurality of second insertion grooves 2311 along the length direction thereof, the first insertion grooves 223 are matched with the second insertion grooves 2311 to realize the insertion between the first beam 22 and the second beam 23, so that the strength of the power battery pack is increased, the brackets 414 at the two ends of the battery cell 412 and the two ends of the bus bar 415 are detachably connected with the electrical connection members 31 on one side of the second beam 23 and the electrical connection members 31 on the third beam 24, so that the battery module 41 can be fixed on the electrical connection members 31, and the electrical connection members 31 are correspondingly connected with the second beam 23 and the third beam 24, so that the battery module 41 is fixed in the frame structure 2, and the movement of the battery module 41 is avoided, and the electrical connection is affected.

Of course, in other embodiments, the electrical connection members 31 are respectively disposed on the side walls of the frame 21 and the second beam 23, and the two ends of the battery module 41 are respectively connected with the electrical connection members 31 on the frame 21 and the second beam 23.

Further, with further reference to fig. 15 and 16, in one embodiment, the second beam 23 includes a first plate 231 and a second plate 232. The first plate 231 is vertically arranged in the accommodating cavity 20, a through groove 2310 is formed in one side of the first plate 231, which faces the bottom plate 1, and the through groove 2310 extends along the width direction of the first plate 231; the second plate 232 is transversely disposed on one side of the first plate 231 facing the bottom plate 1, and is orthogonally connected to the first plate 231, and the electric connector 31 is disposed at a position where the second plate 232 avoids the first plate 231.

With further reference to fig. 15 to 18, the power battery pack further includes a first insulating member 5 and a second insulating member 6. Wherein, first insulator 5 sets up on second plate body 232, and the interval is provided with a plurality of first mounting grooves 54 on the first insulator 5, and a plurality of first mounting grooves 54 set up along the extending direction interval of first insulator 5, correspond in the first mounting groove 54 and be provided with electric connector 31 to make insulating setting between two adjacent electric connector 31.

First wearing groove 221 and second wearing groove 222 have been seted up on first roof beam 22, the both sides of second roof beam 23 are located respectively to first wearing groove 221 and second wearing groove 222, first insulating part 5 passes first wearing groove 221 in proper order, and pass logical groove 2310 after buckling, pass second wearing groove 222 afterwards, thereby make the both ends homonymy of first insulating part 5 stretch out first roof beam 22, so that the electric connector 31 that is close to the 5 tip of first insulating part is connected with the external power supply electricity, be convenient for set up external power supply, make the wiring comparatively simple. With further reference to fig. 13 and 14, the first insulating members 5 are accommodated in the corresponding openings 4143, such that the first insulating members 5 occupy the space of the battery module 41, and the first insulating members 5 are further prevented from occupying the space of the frame structure 2.

The second insulating member 6 is disposed on the third beam 24, the first beam 22 is provided with a third through groove (not shown in the figure), the second insulating member 6 passes through the third through groove, the second insulating member 6 is provided with a plurality of second mounting grooves 61 at intervals, and the second mounting grooves 61 are internally provided with the electric connecting members 31 correspondingly, so that the two adjacent electric connecting members 31 are arranged in an insulating manner. The second insulating member 6 is accommodated in the corresponding opening 4143, so that the second insulating member 6 occupies the space of the battery module 41, and further the space of the frame structure occupied by the second insulating member is avoided.

When both ends of the battery module 41 are respectively connected with the electrical connectors 31 on the first insulator 5 and the electrical connections on the second insulator 6, the current of the external power source sequentially passes through the electrical connector 31 at one end of the first insulator 5, one of the battery modules 41, the electrical connector 31 on the second insulator 6, the other battery module 41, and the electrical connector 31 at the other end of the first insulator 5, thereby forming a complete circuit, see fig. 13 in particular, where the arrow direction in fig. 13 refers to the flow direction of the current.

Specifically, with reference to fig. 11, 15 and 17, the first insulating member 5 is a bent member, and the second insulating member 6 is a long member. The first insulator 5 includes a first section 51, a second section 52 and a third section 53. Wherein, the first end of the first section 51 extends out of the first beam 22 close to the frame 21, the extending direction of the first section 51 is parallel to the second direction L2, the first section 51 is disposed on one side of the second plate 232, and the first section 51 is provided with a first mounting groove 54. The second section 52 is bent and extended from the second end of the first section 51 toward the first plate 231, and passes through the through groove 2310, the second section 52 is extended along the first direction L1, and the second section 52 is provided with a first mounting groove 54. The third section 53 is bent from one end of the second section 52 far away from the first section 51, the extending direction of the third section 53 is parallel to the second direction L2, the third section 53 is disposed on the other side of the first plate 231, one end of the third section 53 far away from the second section 52 is led out from the same side as the first end of the first section 51, and the third section 53 is provided with a first mounting groove 54.

On one hand, current can flow in through the first end of the first section 51 and flow out through the end, far away from the second section 52, of the third section 53, so that a complete loop can be formed; on the other hand, the electric connection with an external power supply is convenient, and the connection is simpler.

Referring to fig. 15, in an embodiment, the frame 21 includes the space-saving member 211, the space-saving member 211 has a groove structure 2110, an opening of the groove structure 2110 is disposed away from the bottom plate 1, the first end of the first section 51 and the end of the third section 53 far from the second section 52 are both located in the groove structure 2110, by disposing the space-saving member 211 having the groove structure 2110, two ends of the first insulating member 5 can be avoided, which is convenient for leading out two ends of the first insulating member 5, and meanwhile, an external power source can be disposed in the groove structure 2110, which is convenient for electrically connecting with the external power source, and the wiring is simple.

The following embodiments take the example where the second insulating member 6 is connected to the electric connecting member 31, and the following structures are also applicable to the electric connecting member 31 on the first insulating member 5.

Referring to fig. 17 to 19, in an embodiment, the electrical connection member 31 and the second insulation member 6 are integrally formed, and the second insulation member 6 is a plastic member and is connected to the electrical connection member 31 through an injection molding process, so that the one-step molding is facilitated, and the connection stability is improved. The first nut 32 is embedded in the second insulator 6. Similarly, the electrical connector 31 and the first insulating member are also integrally formed.

Further, referring to fig. 11 and 13, in an embodiment, the second insulating member 6 is fixedly connected to the third beam 24, a second nut 62 is embedded in a side of the second insulating member 6 away from the electrical connecting member 31, a third mounting hole 241 is formed in the third beam 24, the third mounting hole 241 is disposed corresponding to the second nut 62, the third mounting hole 241 is a sinking hole, and the third mounting hole 241 sinks in a direction away from the bottom plate 1.

Specifically, with reference to fig. 18 to 20, the second insulating member 6 is fixedly connected to the third beam 24 through structural adhesive, and then sequentially passes through the third mounting hole 241 and the second nut 62 to be screwed through the connecting members such as screws, the third beam 24 is a hollow plate, and the aperture of one side of the third mounting hole 241 facing the bottom plate 1 is larger than that of one side of the third mounting hole 241 far away from the bottom plate 1, so that the head of the connecting member such as a screw can extend into the third mounting hole 241, and the head of the connecting member such as a screw is prevented from being exposed out of the third mounting hole 241, and the mounting flatness of the bottom plate 1 is not affected. Similarly, the above connection method is applicable to the first insulating member and the second beam.

Further, in an embodiment, referring to fig. 1, 2, 6, 7 and 13, the electrical connector 31 further includes an elastic member 33, the elastic member 33 is welded with the electrical connector 31 into a whole, and the elastic member 33 is formed with a plug-in groove 330; the power battery pack further comprises a flexible circuit board 7, the flexible circuit board 7 is of a branch branching structure, the flexible circuit board 7 comprises a wiring portion 71 and a plurality of inserting portions 72, the wiring portion 71 is arranged above the electric connecting piece 31, the wiring portion 71 extends along the second direction L2, each inserting portion 72 bends and extends from one side of the wiring portion 71 towards the electric connecting piece 31, the inserting portions 72 are inserted into the inserting grooves 330, due to the extrusion of the elastic pieces 33, the elastic pieces 33 can clamp the inserting portions 72, and therefore the flexible circuit board 7 is fixed, the voltage of each battery module 41 and the temperature of the electric connecting piece 31 can be collected by the wiring portion 71, and the sampling cost of a welding mode is reduced.

Specifically, the elastic element 33 includes a connecting portion 331 and two bending portions 332, the connecting portion 331 is connected to the electrical connector 31, the bending portions 332 are bent and extended from two sides of the connecting portion 331 toward a direction away from the electrical connector 31, and the connecting portion 331 and the two bending portions 332 form the insertion groove 330. Wherein, the bending portion 332 is recessed inward to increase the clamping force of the elastic member 33.

The utility model also provides an automobile, power battery package in the above-mentioned arbitrary embodiment.

The automobile provided by this embodiment, by adopting the power battery pack in any of the above embodiments, the bus bars 415 at the two ends of the battery core 412 and the bracket 414 are detachably connected to the electrical connector 31, and the electrical connector 31 is connected to the frame structure 2, so that the battery modules 41 are detachably connected to the electrical connector 31, when one of the battery modules 41 is abnormal, only a single battery module 41 needs to be detached and replaced, and the electrical connector 31 connected to the frame structure 2 is not affected.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A power battery pack, comprising:

a base plate;

the frame structure is fixedly connected with the bottom plate, and a plurality of accommodating cavities are formed in the frame structure;

the electric connecting pieces are respectively arranged on two sides of the inner wall of the accommodating cavity and connected with the frame structure, and two adjacent electric connecting pieces are arranged in an insulating mode; and

a plurality of battery module, it is a plurality of battery module set up in hold the intracavity, battery module includes electric core, support and confluence piece, the both ends of electric core are connected with respectively the support, the confluence piece set up in deviating from of support one side of electric core, and with the electricity of electric core is connected, the confluence piece with the support respectively with correspond electric connector can dismantle the connection.

2. The power battery pack according to claim 1, wherein the bracket is provided with a receiving hole and a through hole in sequence along the axial direction of the bracket, the receiving hole is communicated with the through hole, and one side of the bracket facing the bottom plate is connected with the electric connector;

one end of the confluence sheet is bent towards the bracket and is positioned between the electric connecting piece and the bracket, and the confluence sheet is provided with a first mounting hole;

the electric connecting piece is connected with a first nut;

the accommodating hole, the through hole, the first mounting hole and the first nut are coaxially arranged;

the power battery pack further comprises:

and the bolt sequentially penetrates through the accommodating hole, the through hole and the first mounting hole and is screwed with the first nut.

3. The power battery pack of claim 2, wherein the bolt comprises:

the head part is accommodated in the accommodating hole;

the rod part is connected with one end, facing the accommodating hole, of the head part, and the rod part penetrates through the through hole to be screwed with the first nut.

4. The power battery pack according to claim 3, wherein the bracket is a plastic member, a metal sleeve is embedded in the bracket, the metal sleeve is disposed at a joint of the accommodating hole and the through hole, two ends of the metal sleeve are respectively disposed in the accommodating hole and the through hole, the head portion abuts against an end portion of the metal sleeve, and the rod portion penetrates through the metal sleeve.

5. The power battery pack according to any one of claims 1 to 4, wherein the bracket has an opening formed therein, the opening is disposed in correspondence with the electrical connector, the electrical connector is received in the opening, and one end of the bus bar is bent toward the opening and connected between the bracket and the electrical connector.

6. The power battery pack of any of claims 1-4, wherein the frame structure comprises:

the frame is arranged around the bottom plate in a surrounding manner;

the first beams extend along a first direction, the first beams are arranged at intervals along a second direction which forms a preset angle with the first direction, and two ends of each first beam are respectively abutted against the side frame;

the second beams extend along the second direction, the second beams are arranged at intervals along the first direction, the second beams are spliced with the first beams to form a plurality of accommodating cavities, and the surfaces, which are far away from the bottom plate, of the second beams are connected with a plurality of electric connectors; and

the third beams are close to the side frame and are parallel to the second beams, and the surfaces of the third beams, which are far away from the bottom plate, are connected with the electric connecting pieces;

the supports at the two ends of the battery core and the bus bar are detachably connected with the electric connecting pieces on the second beam and the third beam respectively.

7. The power battery pack of claim 6, wherein the second beam comprises:

the first plate body is vertically arranged in the accommodating cavity, and a through groove is formed in one side, facing the bottom plate, of the first plate body; and

the second plate body is arranged on one side, facing the bottom plate, of the first plate body and is in orthogonal connection with the first plate body, and the electric connecting piece is arranged at the position, avoiding the first plate body, of the second plate body;

the power battery pack further comprises:

the first insulating part is arranged on the second plate body, a plurality of first mounting grooves are formed in the first insulating part at intervals, the electric connecting pieces are correspondingly arranged in the first mounting grooves, the first insulating part penetrates through the through grooves, the two ends of the first insulating part extend out of the first beam at the same side, so that the electric connecting pieces close to the end parts of the first insulating part are electrically connected with an external power supply, and the first insulating part is accommodated in the corresponding opening; and

the second insulating part is arranged on the third beam, a plurality of second mounting grooves are formed in the second insulating part at intervals, the electric connecting pieces are correspondingly arranged in the second mounting grooves, and the second insulating part is accommodated in the corresponding opening.

8. The power battery pack as claimed in claim 7, wherein the second insulator is fixedly connected to the third beam, a second nut is embedded in a side of the second insulator facing away from the electrical connector, a third mounting hole is formed in the third beam, the third mounting hole is arranged corresponding to the second nut, and the third mounting hole is a lower counter bore.

9. The power battery pack of claim 6, wherein the electrical connector further comprises an elastic member, the elastic member is connected with the electrical connector, and an insertion groove is formed on the elastic member; the power battery pack further comprises:

the flexible circuit board is of a branch branching structure and comprises a wiring portion and a plurality of inserting portions, the wiring portion is arranged above the electric connecting pieces and extends along the second direction, each inserting portion extends towards the electric connecting pieces from one side of the wiring portion in a bending mode, and the inserting portions are inserted into the inserting grooves.

10. An automobile, characterized in that: comprising a power battery pack according to any of claims 1 to 9.

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