CN217983567U - Vehicle and power battery system thereof - Google Patents
Vehicle and power battery system thereof Download PDFInfo
- Publication number
- CN217983567U CN217983567U CN202221382961.XU CN202221382961U CN217983567U CN 217983567 U CN217983567 U CN 217983567U CN 202221382961 U CN202221382961 U CN 202221382961U CN 217983567 U CN217983567 U CN 217983567U
- Authority
- CN
- China
- Prior art keywords
- cross beam
- chassis
- longitudinal beam
- rear end
- longitudinal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Body Structure For Vehicles (AREA)
Abstract
The utility model provides a vehicle and power battery system thereof, include: the vehicle comprises a battery inner frame beam assembly, a chassis frame assembly of the vehicle, an upper cover, a lower cover, a cooling plate and a battery module; the chassis frame assembly is provided with a closed frame forming a closed loop, the upper cover and the lower cover are respectively arranged on the upper side and the lower side of the closed frame, so that an arrangement space is formed between the upper cover and the lower cover and on the inner side of the closed frame, the battery inner frame beam assembly and the battery module are arranged in the arrangement space, the battery inner frame beam assembly is fixedly connected with the chassis frame assembly, the battery module is arranged in the battery inner frame beam assembly, and the cooling plate is arranged on the lower side of the closed frame and the battery module and on the upper side of the lower cover.
Description
Technical Field
The utility model relates to a field car field especially relates to a vehicle and power battery system thereof.
Background
In a new energy vehicle, a power battery is generally disposed in the vehicle, and kinetic energy is provided to the vehicle through electric energy stored in the power battery.
In the prior art, a common power battery structure integration scheme is that a power battery pack is used as an independent part and is assembled on a finished automobile chassis at a later stage, and the battery pack and the finished automobile chassis are mutually independent parts. The structure needs large arrangement space, complex structure, heavy overall weight and small energy density of the battery, and is not beneficial to the improvement of the endurance mileage of the whole vehicle.
SUMMERY OF THE UTILITY MODEL
The utility model provides a vehicle and power battery system thereof to solve battery and the produced problem of whole vehicle chassis mutual independence.
According to a first aspect of the present invention, there is provided a power battery system for a vehicle, comprising: the vehicle comprises a battery inner frame beam assembly, a chassis frame assembly of the vehicle, an upper cover, a lower cover, a cooling plate and a battery module;
the chassis frame assembly is provided with a closed frame forming a closed loop, the upper cover and the lower cover are respectively arranged on the upper side and the lower side of the closed frame, so that an arrangement space is formed between the upper cover and the lower cover and on the inner side of the closed frame, the battery inner frame beam assembly and the battery module are arranged in the arrangement space, the battery inner frame beam assembly is fixedly connected with the chassis frame assembly, the battery module is arranged in the battery inner frame beam assembly, and the cooling plate is arranged on the lower side of the closed frame and the battery module and on the upper side of the lower cover.
Optionally, the closed frame comprises a chassis front end cross beam, a chassis rear end cross beam, a left threshold beam, a right threshold beam, a left front longitudinal beam, a right front longitudinal beam, a left rear longitudinal beam and a right rear longitudinal beam;
the front end of the left threshold beam is connected with the rear end of the left front longitudinal beam, the front end of the left front longitudinal beam is directly or indirectly connected with the left end of the chassis front end cross beam, the front end of the right threshold beam is connected with the rear end of the right front longitudinal beam, the front end of the right front longitudinal beam is directly or indirectly connected with the right end of the chassis front end cross beam, the rear end of the left threshold beam is connected with the front end of the left rear longitudinal beam, the left rear longitudinal beam is directly or indirectly connected with the left end of the chassis rear end cross beam, the rear end of the right threshold beam is connected with the front end of the right rear longitudinal beam, and the right rear longitudinal beam is directly or indirectly connected with the right end of the chassis rear end cross beam;
wherein:
the height of the left front stringer and the right front stringer appears as: the front end is higher than the rear end;
the height of the left rear longitudinal beam and the right rear longitudinal beam is represented as: the rear end height is higher than the front end height.
Optionally, the closed frame satisfies at least one of the following conditions:
a first height difference is formed between the part of the upper side surface of the left front longitudinal beam, which is close to the cross beam at the front end of the chassis, and the upper side surface of the cross beam at the front end of the chassis; transition metal plates are arranged between the chassis front end cross beam and the left front longitudinal beam and between the chassis front end cross beam and the right front longitudinal beam and are used for realizing the transition of the first height difference;
a part of the lower side surface of the left front longitudinal beam, which is close to the chassis front end cross beam, and the lower side surface of the chassis front end cross beam form a second height difference, and a part of the lower side surface of the right front longitudinal beam, which is close to the chassis front end cross beam, and the lower side surface of the chassis front end cross beam form the second height difference; transition metal plates are arranged between the chassis front end cross beam and the left front longitudinal beam and between the chassis front end cross beam and the right front longitudinal beam and are used for realizing the transition of the second height difference;
a third height difference is formed between the part of the upper side surface of the left rear longitudinal beam, which is close to the chassis rear end cross beam, and the upper side surface of the chassis rear end cross beam, and the part of the upper side surface of the right rear longitudinal beam, which is close to the chassis rear end cross beam, and the upper side surface of the chassis rear end cross beam; transition metal plates are arranged between the chassis rear end cross beam and the left rear longitudinal beam and between the chassis rear end cross beam and the right rear longitudinal beam and are used for realizing the transition of the third height difference;
a part of the lower side surface of the left rear longitudinal beam, which is close to the chassis rear end cross beam, and the lower side surface of the chassis rear end cross beam form a fourth height difference, and a part of the lower side surface of the right rear longitudinal beam, which is close to the chassis rear end cross beam, and the lower side surface of the chassis rear end cross beam form the fourth height difference; transition metal plates are arranged between the chassis rear end cross beam and the left rear longitudinal beam and between the chassis rear end cross beam and the right rear longitudinal beam and used for achieving transition of the fourth height difference.
Optionally, the upper cover is provided with an upper cover sealing flange surface for sealing and butting a transition metal plate therein;
the lower cover is provided with a lower cover sealing flange surface which is used for sealing and butting the transition metal plate.
Optionally, the inner frame beam assembly of the battery comprises longitudinal beams arranged along a first direction and cross beams arranged along a second direction, the first direction is perpendicular to the second direction, the first direction is matched with the front-rear direction of the vehicle, and the second direction is matched with the left-right direction of the vehicle;
at least one end of the cross beam is fixedly connected with the inner side of the closed frame through a corresponding connecting assembly, and two ends of the longitudinal beam are fixedly connected with the cross beam;
the battery modules are distributed between the adjacent cross beams, between the adjacent longitudinal beams and between the longitudinal beams and the closed frame.
Optionally, the longitudinal beams in the inner frame beam assembly of the battery comprise a first longitudinal beam and a second longitudinal beam; the cross beams in the battery inner frame beam assembly comprise an inner frame front end cross beam, an inner frame rear end cross beam, a middle cross beam, a left front cross beam and a right front cross beam;
the utility model discloses a novel high-strength steel plate, including inside casing front end crossbeam, inside casing rear end crossbeam, coupling assembling fixed connection, closed frame, coupling assembling fixed connection, inside casing rear end crossbeam, inside casing front end crossbeam, inside casing rear end crossbeam, middle cross beam's both ends are respectively through coupling assembling fixed connection closed frame, the both ends of first longeron are fixed connection respectively the inside casing front end crossbeam with inside casing rear end crossbeam, the both ends of second longeron are fixed connection respectively the both ends of middle cross beam are respectively through coupling assembling fixed connection closed frame, the both ends of first longeron are fixed connection respectively the inside casing front end crossbeam with inside casing rear end crossbeam, the one end of left side front end crossbeam is connected first longeron, and locate the back of the body of first longeron in one side of second longeron, the one end of right side front cross beam is connected the second longeron, and locate the back of the second longeron in one side of first longeron, inside casing front end crossbeam with inside casing rear end crossbeam is followed first direction distributes, a left side front cross beam, right front cross beam is located middle cross beam with between the inside casing front end crossbeam.
Optionally, at least one side of the cross beam in the first direction is provided with a boss, the battery module is directly or indirectly fixedly connected with a module end plate, and the module end plate is installed on the upper side of the boss.
Optionally, the lower side surface of the cross beam is flush with the lower end surface of the battery module, and is attached to the upper side of the cooling plate.
Optionally, a gap is provided between the lower cover and the cooling plate.
According to the utility model discloses a second aspect provides a vehicle, power battery system and vehicle shell including first aspect and that the alternative relates to, power battery system locates in the vehicle shell.
The utility model provides a vehicle and power battery system thereof, integrate traditional battery package casing and whole car chassis frame as an organic whole, and then, outside battery inner frame roof beam assembly, chassis frame assembly, need not to set up battery casing separately for the battery module, effectively improved whole car space arrangement efficiency, and realized losing weight of whole car and reduced originally, simultaneously, improved the intensity and the torsional rigidity of battery package overall structure (namely battery module, battery inner frame roof beam assembly, chassis frame assembly, etc. overall structure); in addition, owing to formed the arrangement space of battery module, battery case need not occupation space, and then, can arrange more electric quantity, promotes whole car continuation of the journey mileage. And simultaneously, the utility model discloses still integrated the cooling plate, can effectively improve power battery system's heat-sinking capability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive labor.
Fig. 1 is a first schematic structural diagram of a power battery system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a power battery system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a chassis frame assembly according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an inner frame beam assembly of a battery according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a chassis frame assembly and a battery inner frame beam assembly according to an embodiment of the present invention;
FIG. 6 is a partial enlarged view of area A in FIG. 5;
fig. 7 is a schematic view of a partial structure of a power battery system according to an embodiment of the present invention;
fig. 8 is a partially enlarged view of the area C in fig. 7.
Description of reference numerals:
1-covering the upper cover; 2-a chassis frame assembly; 3-a battery inner frame beam assembly; 4-a battery module; 5-cooling the plate; 6-lower cover; 7-a connecting plate; 8-module end plate;
101-sealing the flange surface by an upper cover;
201-chassis front end cross member; 202-chassis rear end cross member; 203-transition metal plate; 204-right front stringer; 205-right sill beam; 206-right rear stringer; 207-transition sheet metal; 208-transition sheet metal; 209-left front rail; 210-left threshold beam; 211-left rear stringer; 212-transition sheet metal;
301-a first stringer; 302-a second stringer; 303-inner frame front end beam; 304-inner frame rear end cross beam; 305-right front cross member; 306-left front cross member; 307-middle cross beam;
601-lower cover sealing flange surface;
701-a main board body; 702-a trough body; 703-flanging 704-groove bottom.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be understood that the terms "upper portion", "lower portion", "upper end", "lower surface", "upper surface", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
In the description of the present invention, "plurality" means a plurality, such as two, three, four, etc., unless specifically limited otherwise.
In the description of the present invention, unless explicitly stated or limited otherwise, the terms "connected" and the like are to be understood broadly, and may for example be fixedly connected, detachably connected, or integrated; can be mechanically connected, electrically connected or can communicate with each other; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The technical solution of the present invention will be described in detail with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.
Referring to fig. 1 and 2, a power battery system of a vehicle includes: the vehicle comprises a battery inner frame beam assembly 3, a chassis frame assembly 2 of the vehicle, an upper cover 1, a lower cover 6, a cooling plate 5 and a battery module 4.
The chassis frame assembly 2 is provided with a closed frame forming a closed loop, the upper cover 1 and the lower cover 6 are respectively arranged on the upper side and the lower side of the closed frame, specifically, the upper cover 1 and the lower cover 6 can be respectively and fixedly connected with the upper side and the lower side of the closed frame, and further, an arrangement space can be formed between the upper cover and the lower cover and on the inner side of the closed frame.
Battery inner frame roof beam assembly 3 with battery module 4 is located arrange the space, 3 fixed connection of battery inner frame roof beam assembly chassis frame assembly 2, battery module 4 is located battery inner frame roof beam assembly 3, cooling plate 5 is located seal the frame with the downside of battery module the upside of lower cover 6.
Wherein the chassis frame assembly 2 is the chassis base of the vehicle. The embodiment of the utility model provides a can realize battery module 4's installation with this chassis frame assembly 2 is indirect.
In a specific example, a sealed frame with a closed periphery arranged on the chassis frame assembly 3 can be used as an outer frame structure of a battery and other structures; the sealed frame with the sealed periphery can form a space envelope of the battery pack together with the upper end surface and the lower end surface of the sealed frame, and the space envelope is used as an arrangement space of battery parts; the battery inner frame beam assembly 2 is arranged in the chassis frame beam assembly 3 and is used as a battery pack inner frame beam which is connected with the chassis frame beam assembly to form a complete battery pack shell frame structure.
The battery module 4 is arranged on the battery frame beam assembly 3, and the weight of the whole battery module is borne by the whole chassis frame beam; the bottom of the battery module is provided with a cooling plate, for example, a liquid cooling plate which cools through a liquid cooling medium, in other examples, the cooling medium in the cooling plate can also be a gaseous cooling medium, the cooling plate is installed on the lower end face of the battery frame beam assembly 3, and the lower end face of the battery module 4 is attached to the cooling plate 5; the upper cover 1 is arranged on the upper end surface of the whole vehicle frame beam assembly 2, and the upper cover 1 and the upper end surface of the whole vehicle frame beam assembly 2 can be in sealing connection; the lower cover 6 is arranged on the lower end face of the whole vehicle frame beam assembly 2, and the lower cover 6 is in sealing connection with the lower end face of the whole vehicle frame beam assembly 2.
In the scheme, the traditional battery pack shell and the whole vehicle chassis frame are integrated, and furthermore, a battery shell does not need to be additionally arranged outside the battery inner frame beam assembly and the chassis frame assembly, so that the space arrangement efficiency of the whole vehicle is effectively improved, the weight reduction and cost reduction of the whole vehicle are realized, and the strength and the torsional rigidity of the whole structure of the battery pack (namely the whole structures such as the battery module, the battery inner frame beam assembly and the chassis frame assembly) are improved; in addition, owing to formed the arrangement space of battery module, battery case need not occupation space, and then, can arrange more electric quantity, promotes whole car continuation of the journey mileage. And simultaneously, the utility model discloses still integrated the cooling plate, can effectively improve power battery system's heat-sinking capability.
In one embodiment, referring to fig. 3, the closed frame includes a chassis front end cross beam 201, a chassis rear end cross beam 202, a left threshold beam 210, a right threshold beam 205, a left front longitudinal beam 209, a right front longitudinal beam 204, a left rear longitudinal beam 211, and a right rear longitudinal beam 206;
wherein front, rear, left, and right are described based on front, rear, left, and right of the vehicle.
The front end of the left threshold beam 210 is connected with the rear end of the left front longitudinal beam 209, the front end of the left front longitudinal beam 209 is directly or indirectly connected with the left end of the chassis front end cross beam 201, the front end of the right threshold beam 205 is connected with the rear end of the right front longitudinal beam 204, the front end of the right front longitudinal beam 204 is directly or indirectly connected with the right end of the chassis front end cross beam 201, the rear end of the left threshold beam 210 is connected with the front end of the left rear longitudinal beam 211, the left rear longitudinal beam 211 is directly or indirectly connected with the left end of the chassis rear end cross beam 202, the rear end of the right threshold beam 205 is connected with the front end of the right rear longitudinal beam 206, and the right rear longitudinal beam 206 is directly or indirectly connected with the right end of the chassis rear end cross beam 202;
wherein:
the height of the left front rail 209 and the right front rail 204 appears as: the front end is higher than the rear end; specifically, part or all of left front longitudinal beam 209 can realize gradually-decreasing height from front to back, and part or all of right front longitudinal beam 204 can realize gradually-decreasing height from front to back;
the height of the left rear longitudinal beam 211 and the right rear longitudinal beam 206 is represented as: the height of the rear end is higher than that of the front end; specifically, the height of the left rear longitudinal beam 211 can be gradually increased from front to back partially or completely, and the height of the right rear longitudinal beam 206 can be gradually increased from front to back partially or completely;
the comparison of the front height and the rear height may include, for example: the heights of the front end of the upper surface of the corresponding longitudinal beam and the rear end of the upper surface of the corresponding longitudinal beam are compared, the heights of the front end of the lower surface of the corresponding longitudinal beam and the rear end of the lower surface of the corresponding longitudinal beam are compared, and the heights of the front end and the rear end of the axis of the corresponding longitudinal beam are compared.
In the illustrated example, the closed frame may further include a transition metal plate.
For example, the closed border satisfies at least one of:
a first height difference is formed between a portion of the upper side of the left front side member 209 close to the chassis front end cross member 201 and the upper side of the chassis front end cross member 201, which can also be understood as follows: at the joint of the left front longitudinal beam 209 and the chassis front end cross beam 201, a first height difference is formed between the upper side surface of the left front longitudinal beam 209 and the upper side surface of the chassis front end cross beam 201; the first height difference is formed between the part of the upper side of the right front longitudinal beam 204 close to the chassis front end cross beam 201 and the upper side of the chassis front end cross beam 201, which can also be understood as follows: at the joint of the right front longitudinal beam 204 and the chassis front end cross beam 201, a first height difference is formed between the upper side surface of the right front longitudinal beam 204 and the upper side surface of the chassis front end cross beam 201; a transition metal plate 208 is arranged between the chassis front end cross beam 201 and the left front longitudinal beam 209 and used for realizing the transition of the first height difference, and a transition metal plate 203 is arranged between the chassis front end cross beam 201 and the right front longitudinal beam 204 and used for realizing the transition of the first height difference; the first height difference can be that the upper surface of the cross beam at the front end of the chassis is higher, or the upper surface of the cross beam at the front end of the chassis is lower;
the part of the underside of the left front longitudinal beam 209 close to the front cross member 201 forms a second height difference with the underside of the front cross member 201, which can also be understood as follows: at the joint of the left front longitudinal beam 209 and the chassis front end cross beam 201, a second height difference is formed between the lower side surface of the left front longitudinal beam 209 and the lower side surface of the chassis front end cross beam 201; the part of the underside of the right front longitudinal beam 204 adjacent to the chassis front cross member 201 forms the first height difference with the underside of the chassis front cross member 201, which can also be understood as follows: at the joint of the right front longitudinal beam 204 and the chassis front end cross beam 201, a second height difference is formed between the lower side surface of the right front longitudinal beam 204 and the lower side surface of the chassis front end cross beam 201; a transition metal plate 208 is arranged between the chassis front end cross beam 201 and the left front longitudinal beam 209 and used for realizing the transition of the second height difference, and a transition metal plate is arranged between the chassis front end cross beam 201 and the right front longitudinal beam 204 and used for realizing the transition of the first height difference; the second height difference can be that the upper surface of the cross beam at the front end of the chassis is higher, or the upper surface of the cross beam at the front end of the chassis is lower;
in some examples, the first height difference and the second height difference may not be formed.
For another example, the closed border satisfies at least one of:
a third height difference is formed between the upper side of the left rear longitudinal beam 211 close to the chassis rear end cross beam 202 and the upper side of the chassis rear end cross beam 202, which can be understood as follows: at the joint of the left rear longitudinal beam 211 and the chassis rear end cross beam 202, a third height difference is formed between the upper side surface of the left rear longitudinal beam 211 and the upper side surface of the chassis rear end cross beam 202; the third height difference is formed between the portion of the upper side of the right rear longitudinal beam 206 close to the chassis rear end cross beam 202 and the upper side of the chassis rear end cross beam 202, which can also be understood as follows: at the joint of the right rear longitudinal beam 206 and the chassis rear end cross beam 202, a third height difference is formed between the upper side surface of the right rear longitudinal beam 206 and the upper side surface of the chassis rear end cross beam 202; a transition metal plate 212 is arranged between the chassis rear end cross beam 202 and the left rear longitudinal beam 211 and used for realizing the transition of the third height difference, and a transition metal plate 207 is arranged between the chassis rear end cross beam 202 and the right rear longitudinal beam 206 and used for realizing the transition of the third height difference; the third height difference may be that the upper surface of the cross beam at the rear end of the chassis is higher, or the upper surface of the cross beam at the rear end of the chassis is lower, and the schematic diagram in the figure is as follows: the upper surface of the cross beam at the rear end of the chassis is lower;
the part of the lower side of the left rear longitudinal beam 211 close to the rear cross member 202 forms a fourth height difference with the lower side of the rear cross member 202, which can also be understood as follows: at the joint of the left rear longitudinal beam 211 and the chassis rear end cross beam 202, a fourth height difference is formed between the lower side surface of the left rear longitudinal beam 211 and the lower side surface of the chassis rear end cross beam 202; the portion of the lower side of the right rear longitudinal beam 206 near the rear cross member 202 forms the fourth height difference with the lower side of the rear cross member 202, which can also be understood as: at the junction of the right rear longitudinal beam 206 and the chassis rear end cross beam 202, the lower side of the right rear longitudinal beam 206 and the lower side of the chassis rear end cross beam 202 form a fourth height difference; a transition metal plate is arranged between the chassis rear end cross beam 202 and the left rear longitudinal beam 211 and used for realizing the transition of the fourth height difference, and a transition metal plate is arranged between the chassis rear end cross beam 202 and the right rear longitudinal beam 206 and used for realizing the transition of the fourth height difference; the fourth height difference may be that the upper surface of the cross beam at the front end of the chassis is higher, or that the upper surface of the cross beam at the front end of the chassis is lower.
Furthermore, in a specific example, the left threshold beam 210, the right threshold beam 205, the chassis front end cross beam 201, the right end cross beam 202, the left front longitudinal beam 209, the right front longitudinal beam 204, the left rear longitudinal beam 211 and the right rear longitudinal beam 206 may be welded together to form a closed frame as an outer frame structure of the battery frame beam assembly 3 (which may also be regarded as a battery pack housing), that is, the entire chassis frame assembly is used as a part of a main structure of the battery pack, an inner envelope formed by the closed frame formed by the chassis frame assembly and upper and lower end surfaces thereof is an arrangement space of internal parts of the battery, and the upper and lower end surfaces of the chassis frame assembly are used as upper and lower sealing surfaces of the battery pack respectively.
In order to ensure that the integral sealing surface is continuous, in the whole vehicle frame-beam assembly 2, a corresponding transition metal plate structure is arranged aiming at the larger height difference between the upper end surface of the cross beam and the upper end surface of the longitudinal beam, the transition metal plate is welded on the cross beam and the longitudinal beam, and the height difference between the end surfaces is smoothly transited to form a continuous sealing surface. Similarly, a transition sheet metal structure is also arranged at the position with larger height difference between the lower end surface of the cross beam and the lower end surface of the longitudinal beam. The quantity and the shape of transition panel beating are adjusted as required, and the position that transition panel beating and crossbeam or longeron combine simultaneously is filled with sealed glue to jam the panel beating clearance.
In one embodiment, referring to fig. 4, the inner frame beam assembly 3 includes a longitudinal beam disposed along a first direction and a transverse beam disposed along a second direction, the first direction is perpendicular to the second direction, the first direction is matched with a front-rear direction of the vehicle, and the second direction is matched with a left-right direction of the vehicle;
at least one end of the cross beam is fixedly connected with the inner side of the closed frame through a corresponding connecting assembly 7, and two ends of the longitudinal beam are fixedly connected with the cross beam;
the battery modules are distributed between the adjacent cross beams, between the adjacent longitudinal beams and between the longitudinal beams and the closed frame.
Fig. 4 illustrates an alternative distribution of the longitudinal beams and the transverse beams, and the number, positions and connection relations of the longitudinal beams and the transverse beams are not limited to the above.
The longitudinal beams in the battery inner frame beam assembly 3 comprise a first longitudinal beam 301 and a second longitudinal beam 302; the cross beams in the battery inner frame beam assembly 3 comprise an inner frame front end cross beam 303, an inner frame rear end cross beam 304, a middle cross beam 307, a left front cross beam 306 and a right front cross beam 305;
two ends of the inner frame front end cross beam 303 are respectively and fixedly connected with the closed frame through a connecting assembly 7, for example, the left front longitudinal beam 209 and the right front longitudinal beam 204 in the closed frame are connected, and two ends of the inner frame rear end cross beam 304 are respectively and fixedly connected with the closed frame through the connecting assembly 7, for example, the left rear longitudinal beam 211 and the right rear longitudinal beam 206 in the closed frame are connected; the two ends of the middle cross beam 307 are respectively fixedly connected to the closed frame through a connecting assembly 7, for example, the left threshold beam 210 and the right threshold beam 205 in the closed frame are connected.
The two ends of the first longitudinal beam 301 are fixedly connected with the inner frame front end cross beam 303 and the inner frame rear end cross beam 304 respectively, the two ends of the second longitudinal beam 302 are fixedly connected with the inner frame front end cross beam 303 and the inner frame rear end cross beam 304 respectively, one end of the left front cross beam 306 is connected with the first longitudinal beam 301 and is arranged on one side of the first longitudinal beam 301, which is back to the second longitudinal beam 302, one end of the right front cross beam 305 is connected with the second longitudinal beam 302 and is arranged on one side of the second longitudinal beam 302, which is back to the first longitudinal beam 301, the inner frame front end cross beam 303, the middle cross beam 307 and the inner frame rear end cross beam are distributed along the first direction, and the left front cross beam 306 and the right front cross beam 305 are arranged between the middle cross beam 307 and the inner frame front end cross beam 303.
In a specific example, two ends of the first longitudinal beam 301 and the second longitudinal beam 302 are respectively welded to the front end cross beam 303 and the rear end cross beam 304 of the inner frame, the first longitudinal beam 301 and the second longitudinal beam 302 are respectively welded to the middle cross beam 307 at overlapping positions, the right end of the left front cross beam 306 is welded to the first longitudinal beam 301, and the left end of the right front cross beam 305 is welded to the second longitudinal beam 302, so that the inner frame beam assembly of the battery is formed.
In the above embodiment, the battery inner frame beam assembly 3 is disposed in the closed frame of the chassis frame assembly 2, and the battery inner frame assembly and the chassis frame assembly are mechanically connected together, so as to form an integral battery pack frame structure, and greatly improve the structural strength and torsional rigidity of the battery pack. The connection between the battery inner frame assembly and the chassis frame assembly can adopt a scheme of direct welding or connection plate switching according to the materials of the battery frame assembly and the chassis frame assembly.
Specifically, the cross beam and the longitudinal beam in the battery inner frame beam assembly 3 can be both aluminum alloy, and the chassis frame is made of steel, so that the connection between the battery frame assembly and the chassis frame adopts a connection plate switching scheme: the two ends of the front end beam, the middle beam and the rear end beam, and the right ends of the left end beam and the right end beam of the left front beam and the right end beam of the right front beam are riveted with the matched connecting plates respectively, so that the beams are connected with the chassis frame assembly. After battery package frame roof beam assembly and chassis frame roof beam assembly are connected, battery frame roof beam assembly not only forms holistic battery package frame construction with whole car chassis frame roof beam assembly to separate battery envelope space for a plurality of adjacent sash, the battery module is arranged in the sash, realizes spacing in the plane direction of battery module.
In one embodiment, referring to fig. 5 and 6, the connecting members may include connecting plates 7, for example, 8 connecting members (each of which may include a connecting plate 7) are riveted to the inner side surfaces of the front left longitudinal beam 209, the front right longitudinal beam 204, the threshold left beam 210, the threshold right beam 205, the rear left longitudinal beam 211 and the rear right longitudinal beam 206, so as to connect the inner frame assembly of the battery pack and the chassis frame assembly together. The connecting plate and the chassis frame can be connected together by riveting and welding.
In an example, referring to fig. 6, the connecting plate 7 includes a main plate 701 and a groove 702 disposed on a first side surface of the main plate, and a connecting portion of a cross beam in the inner frame beam assembly 3 of the battery is embedded in the groove; the connection part is fixedly connected between the tank body and the lower cover through a first connection part (such as a threaded assembly), and the tank bottom of the tank body 702 and the lower cover are respectively positioned at the upper side and the lower side of the connection part;
the main plate body 701 is fixedly connected to the inner side of the whole vehicle frame beam assembly 2 (for example, the corresponding part of the closed frame) through a second connecting part.
A sealant groove is formed in the second side surface of the main plate body 701 (the back of the sealant groove can form a groove bottom 704), sealant is coated in the sealant groove, and the sealant is sealed between the main plate body and the side wall of the whole vehicle frame.
The lower end of the first side surface of the main plate body 701 is further provided with a flange 703, and the flange 703 may be fixedly connected to a corresponding cross beam (e.g., a boss thereof) through a third connecting portion.
In a further scheme, referring to fig. 4, 6 to 8, at least one side of the cross beam in the first direction is provided with a boss 308, the battery module 4 is directly or indirectly fixedly connected with a module end plate 8, and the module end plate 8 is mounted on the upper side of the boss 308.
The cross section of the middle cross beam 307 (including the bosses 308 at the front side and the rear side) is in an inverted T shape, the cross sections of the front end cross beam 303 (including the boss 308 at the rear side thereof), the rear end cross beam 304 (including the boss 308 at the front side thereof), the left front cross beam 306 (including the boss 308 at the rear side thereof) and the right front cross beam 305 (including the boss 308 at the rear side thereof) are in an L shape, and as can be seen, the bottom of the left front cross beam 306 and the right front cross beam 305 are respectively provided with a boss for mounting the battery module and realizing the height direction positioning of the battery module.
Furthermore, the upper end face of the boss of each cross beam is provided with a mounting hole for mounting a rivet nut so as to fix the battery module and the cross beam. The cross section of the longitudinal beam is square. The cross beam and the longitudinal beam can be selected from an aluminum alloy extrusion process or a steel plate rolling process.
In addition, the arrangement of the illustrated cell inner frame rail assembly is only one implementation method, and the number and position of the cross beams and the longitudinal beams can be adjusted according to the actual module size and the envelope size of the chassis frame assembly.
In one embodiment, referring to fig. 2 in combination with other drawings, the upper cover 1 is provided with an upper cover sealing flange surface 101 for sealing and abutting against a transition metal plate therein; the lower cover 6 is provided with a lower cover sealing flange surface 601 which is used for sealing and butting the transition metal plate therein.
In a specific example, the upper cover 1 and the lower cover 6 are both of a stamped sheet metal structure. The upper cover sealing flange surface 101 at the lower part of the upper cover 1 is a sealing surface with continuous curvature, and the curvature of the whole outline corresponds to the sealing surface formed by the upper end surface and the upper end transition metal plate of the chassis frame assembly. The sealing mode between the upper cover and the upper end face of the chassis frame assembly can adopt sealing foam or RTV sealant, and the maintainability is considered in the example, and the sealing foam is adopted for sealing. The upper cover is fastened and connected with the upper end surface of the chassis frame assembly through bolts.
The lower cover sealing flange surface 601 on the upper part of the lower cover 6 is a sealing surface with continuous curvature, and the curvature of the whole outline corresponds to the sealing surface formed by the lower end surface and the lower end transition metal plate of the chassis frame assembly. The sealing mode between the lower cover and the lower end face of the chassis frame assembly can adopt sealing foam or RTV (room temperature vulcanized) sealant. The lower cover is tightly connected with the lower end face of the whole vehicle chassis through bolts.
A gap is formed between the lower cover 6 and the cooling plate 5, and further, buffering foam can be arranged according to needs, so that the bottom ball impact resistance and NVH (noise, vibration and harshness) performance of the battery pack can be improved. Through this clearance, can realize the buffering effect, be favorable to promoting the resistant bottom ball of battery and hit the performance.
In a further scheme, the lower side surface of the cross beam (i.e. the cross beam in the battery inner frame beam assembly 3) is flush with the lower end surface of the battery module, and is attached to the upper side of the cooling plate, so that the heat exchange efficiency can be effectively improved, and the heat dissipation performance is guaranteed.
In a specific example, the cooling plate 5 may be a liquid cooling plate, and the liquid cooling plate is disposed on the lower end surface of the inner frame beam assembly of the battery, and may be mounted on the lower end surface of the inner frame beam assembly of the battery through FDS or bolt connection, that is, the liquid cooling plate, the inner frame beam assembly of the battery and the chassis frame assembly form an integral rigid connection, so as to further improve the structural bearing strength of the whole battery pack and the rigidity of the battery pack. Furthermore, the upper end face of the liquid cooling plate is attached to the lower end face of the battery inner frame beam assembly. The liquid cooling plate adopts an integral forming process and can be an extrusion-molded harmonica tube or upper and lower end brazing liquid cooling plates.
In the illustrated example, the battery module may be longitudinally arranged in a lattice formed by the inner frame beam assembly of the battery and the chassis frame assembly and mounted on a cross beam of the inner frame beam assembly of the battery. In other embodiments, the module may also be transversely disposed in a lattice formed by the inner frame beam assembly of the battery and the chassis frame assembly, and mounted on a longitudinal beam of the inner frame beam assembly of the battery, wherein the cross section of the longitudinal beam needs to be adaptively adjusted to increase the mounting bosses, and meanwhile, the number of the longitudinal beams needs to be adaptively increased.
In a specific example, a height difference is arranged between the lower end face of the module end plate 8 and the lower end face of the battery module 4, after the module end plate 8 is installed on a boss at the bottom of the cross beam, the lower end face of the module is flush with the lower end face of a battery inner frame beam assembly (cross beam), and after the liquid cooling plate is installed, the lower end face of the module is attached to the liquid cooling plate, so that efficient heat exchange is realized.
To sum up, it can be seen that, the utility model discloses in the concrete scheme, integrated as an organic whole with battery package casing and whole car chassis frame, improved whole car spatial arrangement efficiency, can realize losing of whole car and fall originally, be as an organic whole with inboard frame roof beam of battery and chassis frame attach, form vertically and horizontally staggered's complete battery package casing frame construction, greatly improved battery package structural strength and rigidity, still with integral type water-cooling board monolithic connection to the inboard frame roof beam bottom of battery package, further improve the bulk rigidity of battery package structure.
In addition, the chassis frame and the inner side frame beam of the battery are used as bearing structural members, the lower cover is not used as a main stress structural member of the battery pack, and a buffer gap is arranged between the lower cover and the liquid cooling plate, so that the bottom ball impact resistance of the battery is improved.
An embodiment of the utility model provides a vehicle is still provided, power battery system and vehicle shell that above optional scheme relates to are included, power battery system locates in the vehicle shell.
In the description of the present specification, reference to the terms "an embodiment," "an example," "implementation," "an example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the scope of the invention in its corresponding aspects.
Claims (10)
1. A power battery system for a vehicle, comprising: the vehicle comprises a battery inner frame beam assembly, a chassis frame assembly of the vehicle, an upper cover, a lower cover, a cooling plate and a battery module;
the chassis frame assembly has a closed frame forming a closed loop, the upper cover and the lower cover are respectively arranged on the upper side and the lower side of the closed frame, so that an arrangement space is formed between the upper cover and the lower cover on the inner side of the closed frame, the battery inner frame beam assembly is arranged on the battery module, the battery inner frame beam assembly is fixedly connected with the chassis frame assembly, the battery module is arranged on the battery inner frame beam assembly, and the cooling plate is arranged on the lower side of the closed frame and the battery module and on the upper side of the lower cover.
2. The power battery system of claim 1, wherein the closed perimeter frame comprises a chassis front end cross beam, a chassis rear end cross beam, a left threshold beam, a right threshold beam, a left front longitudinal beam, a right front longitudinal beam, a left rear longitudinal beam, a right rear longitudinal beam;
the front end of the left threshold beam is connected with the rear end of the left front longitudinal beam, the left front longitudinal beam is directly or indirectly connected with the left end of the chassis front end cross beam, the front end of the right threshold beam is connected with the rear end of the right front longitudinal beam, the right front longitudinal beam is directly or indirectly connected with the right end of the chassis front end cross beam, the rear end of the left threshold beam is connected with the front end of the left rear longitudinal beam, the left rear longitudinal beam is directly or indirectly connected with the left end of the chassis rear end cross beam, the rear end of the right threshold beam is connected with the front end of the right rear longitudinal beam, and the right rear longitudinal beam is directly or indirectly connected with the right end of the chassis rear end cross beam;
wherein:
the height of the left front stringer and the right front stringer appears as: the front end is higher than the rear end;
the height of the left rear longitudinal beam and the right rear longitudinal beam is represented as: the rear end height is higher than the front end height.
3. Power battery system according to claim 2,
the closed frame meets at least one of the following conditions:
a first height difference is formed between the part of the upper side surface of the left front longitudinal beam, which is close to the cross beam at the front end of the chassis, and the upper side surface of the cross beam at the front end of the chassis; transition metal plates are arranged between the chassis front end cross beam and the left front longitudinal beam and between the chassis front end cross beam and the right front longitudinal beam and are used for realizing the transition of the first height difference;
a part of the lower side surface of the left front longitudinal beam, which is close to the front cross beam of the chassis, forms a second height difference with the lower side surface of the front cross beam of the chassis, and a part of the lower side surface of the right front longitudinal beam, which is close to the front cross beam of the chassis, forms the second height difference with the lower side surface of the front cross beam of the chassis; transition metal plates are arranged between the chassis front end cross beam and the left front longitudinal beam and between the chassis front end cross beam and the right front longitudinal beam and are used for realizing the transition of the second height difference;
a third height difference is formed between the part of the upper side surface of the left rear longitudinal beam, which is close to the cross beam at the rear end of the chassis, and the upper side surface of the right rear longitudinal beam, which is close to the cross beam at the rear end of the chassis, and the upper side surface of the cross beam at the rear end of the chassis; transition metal plates are arranged between the chassis rear end cross beam and the left rear longitudinal beam and between the chassis rear end cross beam and the right rear longitudinal beam and are used for realizing the transition of the third height difference;
a part of the lower side surface of the left rear longitudinal beam, which is close to the chassis rear end cross beam, and the lower side surface of the chassis rear end cross beam form a fourth height difference, and a part of the lower side surface of the right rear longitudinal beam, which is close to the chassis rear end cross beam, and the lower side surface of the chassis rear end cross beam form the fourth height difference; transition metal plates are arranged between the chassis rear end cross beam and the left rear longitudinal beam and between the chassis rear end cross beam and the right rear longitudinal beam and used for achieving transition of the fourth height difference.
4. The power battery system according to claim 3, wherein the upper cover is provided with an upper cover sealing flange surface for sealing and butting against the transition metal plate therein;
the lower cover is provided with a lower cover sealing flange surface which is used for sealing and butting the transition metal plate.
5. The power cell system of any of claims 1 to 4, wherein the cell inner frame beam assembly comprises longitudinal beams arranged in a first direction and transverse beams arranged in a second direction, the first direction being perpendicular to the second direction, the first direction matching a fore-aft direction of the vehicle, the second direction matching a left-right direction of the vehicle;
at least one end of the cross beam is fixedly connected with the inner side of the closed frame through a corresponding connecting assembly, and two ends of the longitudinal beam are fixedly connected with the cross beam;
the battery modules are distributed between the adjacent cross beams, between the adjacent longitudinal beams and between the longitudinal beams and the closed frame.
6. The power cell system of claim 5, wherein the longitudinal beams in the cell inner frame beam assembly comprise a first longitudinal beam, a second longitudinal beam; the cross beams in the battery inner frame beam assembly comprise a front end cross beam, an inner frame rear end cross beam, a middle cross beam, a left front cross beam and a right front cross beam;
the two ends of the front end cross beam are respectively fixedly connected with the closed frames through the connecting assemblies, the two ends of the inner frame rear end cross beam are respectively fixedly connected with the closed frames through the connecting assemblies, the two ends of the middle cross beam are respectively fixedly connected with the closed frames, the two ends of the first longitudinal beam are respectively fixedly connected with the front end cross beam and the inner frame rear end cross beam, the two ends of the second longitudinal beam are respectively fixedly connected with the front end cross beam and the inner frame rear end cross beam, one end of the left front cross beam is connected with the first longitudinal beam and is arranged on one side of the first longitudinal beam, the back of the first longitudinal beam is arranged on the other side of the second longitudinal beam, one end of the right front cross beam is connected with the second longitudinal beam and is arranged on one side of the second longitudinal beam, the front end cross beam is arranged on the middle cross beam and the inner frame rear end cross beam along the first direction, and the left front cross beam is arranged on the right front cross beam and between the middle cross beam and the front end cross beam.
7. The power battery system of claim 5, wherein at least one side of the cross beam in the first direction is provided with a boss, the battery module is directly or indirectly fixedly connected with a module end plate, and the module end plate is mounted on the upper side of the boss.
8. The power cell system of claim 5, wherein the lower side of the cross beam is flush with the lower end face of the battery module and abuts the upper side of the cooling plate.
9. Power cell system according to any of claims 1 to 4, characterized in that a gap is provided between the lower cover and the cooling plate.
10. A vehicle comprising a power battery system according to any one of claims 1 to 8 and a vehicle enclosure, said power battery system being disposed within said vehicle enclosure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221382961.XU CN217983567U (en) | 2022-06-02 | 2022-06-02 | Vehicle and power battery system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221382961.XU CN217983567U (en) | 2022-06-02 | 2022-06-02 | Vehicle and power battery system thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217983567U true CN217983567U (en) | 2022-12-06 |
Family
ID=84270618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221382961.XU Active CN217983567U (en) | 2022-06-02 | 2022-06-02 | Vehicle and power battery system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217983567U (en) |
-
2022
- 2022-06-02 CN CN202221382961.XU patent/CN217983567U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2558163C2 (en) | Vehicle configuration including storage battery | |
| CN106005014B (en) | Chassis module structure of light-weight minibus | |
| CN110171376B (en) | Front engine room collision energy-absorbing structure | |
| WO2023016106A1 (en) | Lower vehicle body rear structure and vehicle | |
| CN217983567U (en) | Vehicle and power battery system thereof | |
| CN213948589U (en) | Platform-based electric vehicle floor | |
| CN217969656U (en) | Rear floor assembly and vehicle | |
| CN115503840A (en) | New energy automobile and front floor structure thereof | |
| CN115122896A (en) | Power battery assembly highly integrated with vehicle body floor, electric vehicle and design method | |
| CN211731562U (en) | Logistics vehicle frame with modular structure | |
| CN211731563U (en) | Connection structure of frame | |
| CN212085102U (en) | Battery box of disconnect-type water-cooling board | |
| CN114987627A (en) | Electric automobile front floor structure and electric automobile comprising same | |
| CN112072016A (en) | Electric vehicle battery pack box structure | |
| CN112599914A (en) | Power battery panel beating lower box assembly structure | |
| CN219749961U (en) | Rear floor structure, vehicle body assembly and vehicle | |
| CN219303839U (en) | Battery pack box, battery pack and vehicle | |
| CN221041272U (en) | High-strength bearing type liquid cooling plate and battery pack | |
| CN221596651U (en) | Frame boundary beam of battery package, battery package and vehicle | |
| CN219948348U (en) | Dash panel reinforcing structure, front body structure and automobile | |
| CN215706640U (en) | Integrated automobile body cross beam and automobile | |
| CN218229165U (en) | New energy automobile and front floor structure thereof | |
| CN115548557A (en) | Battery box and new forms of energy electric automobile | |
| CN216916059U (en) | Vehicle rear longitudinal beam, vehicle rear floor assembly, vehicle body frame and vehicle | |
| CN219295520U (en) | Expandable mechanism and vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |