Disclosure of utility model
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the battery cell assembly which can prevent the bottom end of the battery cell from being subjected to excessive pressure to cause bending deformation or even fracture, so that the service life of the battery cell is longer.
The utility model also provides a battery with the battery cell assembly.
The utility model also provides an electric two-wheel vehicle with the battery.
According to the embodiment of the first aspect of the utility model, the battery cell assembly comprises a shell, a mounting frame and a plurality of battery cells, wherein the shell is provided with a containing cavity, the top end of the containing cavity is arranged in an open mode, the mounting frame is connected to the top end of the shell, the battery cells are contained in the containing cavity side by side, and the top end of each battery cell is connected to the mounting frame so as to be borne on the shell through the mounting frame.
The battery cell assembly provided by the embodiment of the utility model has at least the following beneficial effects:
In the utility model, when the battery is assembled, the top ends of a plurality of battery cells are connected to the mounting frame, then the battery cells are placed in the accommodating cavity of the shell, then the mounting frame is connected with the top end of the shell to assemble a battery cell assembly, and finally the battery cell assembly is installed in the box body of the battery. Compared with the existing battery, the whole weight of the battery cell assembly is born through the bottom end of the battery cell, and the battery cell assembly has the advantages that a plurality of battery cells are born on the shell through the mounting frame at the top ends of the battery cell assembly, and are born on the box body of the battery through the shell, so that the bottom end of the battery cell does not need to bear the whole weight of the battery cell assembly, and further, bending deformation and even fracture caused by overlarge pressure born by the bottom end of the battery cell can be prevented, and the service life of the battery cell is longer.
According to some embodiments of the utility model, four corner positions of the top end of the shell are respectively provided with a fixing part, four corner positions of the mounting frame are correspondingly provided with a convex part, and the convex part is connected with the fixing part through a fastener.
According to some embodiments of the utility model, the fixing part comprises two perpendicular fixing plates, wherein an end face of one fixing plate is attached to the outer side wall of the shell and is connected with the shell through a fastener, and an end face of the other fixing plate is attached to the bottom face of the protruding part and is connected with the protruding part through a fastener.
According to some embodiments of the utility model, a clamping groove is formed in the top end of the side wall of the shell, and the mounting frame is provided with a clamping structure which is mutually clamped with the clamping groove.
According to some embodiments of the utility model, the clamping groove is provided with a plurality of clamping structures, each clamping structure comprises a plurality of first clamping pieces and a plurality of second clamping pieces, the plurality of first clamping pieces are respectively arranged on two sides of the mounting frame along a first horizontal direction, each first clamping piece is positioned between two adjacent convex parts, each first clamping piece is clamped in the clamping groove, the plurality of second clamping pieces are respectively arranged on two sides of the mounting frame along a second horizontal direction, each second clamping piece is positioned between two adjacent convex parts, and each second clamping piece is clamped in the clamping groove, wherein the first horizontal direction is perpendicular to the second horizontal direction.
According to some embodiments of the utility model, the first clamping piece comprises a first connecting part and a first buckling part, the first connecting part is positioned on the outer side of the shell, the first buckling part is connected with the first connecting part and is buckled in the clamping groove, the second clamping piece comprises a second connecting part and a second buckling part, the first connecting part is positioned on the inner side of the shell, and the second buckling part is connected with the second connecting part and is buckled in the clamping groove.
According to some embodiments of the utility model, the mounting bracket abuts a top surface of a side wall of the housing.
According to some embodiments of the utility model, the top end of the mounting frame is provided with a plurality of support columns, the battery cell assembly further comprises a BMS module, the BMS module is connected to the top ends of the support columns, and the top end of the mounting frame is provided with an annular insulating plate encircling the BMS module.
A battery according to an embodiment of a second aspect of the present utility model comprises a cell assembly according to an embodiment of the first aspect.
The battery provided by the embodiment of the utility model has at least the following beneficial effects:
By adopting the battery cell assembly of the embodiment of the first aspect of the utility model, compared with the existing battery, the whole weight of the battery cell assembly is born through the bottom end of the battery cell, and the battery cell assembly of the utility model has the advantages that a plurality of battery cells are born on the shell through the mounting frame at the top ends of the battery cells and then are born on the box body of the battery through the shell, so that the bottom end of the battery cell does not need to bear the whole weight of the battery cell assembly, and further, the situation that the bottom end of the battery cell is subjected to excessive pressure to cause bending deformation or even fracture can be prevented, so that the service life of the battery cell is longer.
An electric two-wheeled vehicle according to an embodiment of a third aspect of the present utility model includes the battery according to the embodiment of the second aspect described above.
The electric two-wheeled vehicle provided by the embodiment of the utility model has at least the following beneficial effects:
By adopting the battery according to the embodiment of the second aspect of the utility model, compared with the existing battery, the whole weight of the battery cell assembly is born by the bottom end of the battery cell, and the battery cell assembly has the advantages that the plurality of battery cells are born on the shell through the mounting frame at the top ends of the battery cell assembly, and are born on the box body of the battery through the shell, so that the bottom end of the battery cell does not need to bear the whole weight of the battery cell assembly, and further, the situation that the bottom end of the battery cell is subjected to excessive pressure to cause bending deformation or even fracture can be prevented, and the service life of the battery cell is longer.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the direction or positional relationship indicated with respect to the description of the orientation, such as up, down, etc., is based on the direction or positional relationship shown in the drawings, is merely for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, a plurality refers to two or more. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
A battery cell assembly, a battery, and an electric two-wheeled vehicle according to an embodiment of the present utility model are described below with reference to fig. 1 to 5.
A cell assembly according to an embodiment of the first aspect of the present utility model, as shown in fig. 1 to 3, includes a housing 100, a mounting frame 200, and a plurality of cells 300.
The housing 100 may be square, the housing 100 is formed with a receiving cavity 101, a top end of the receiving cavity 101 is provided with an opening, the housing 100 may be made of an electrically insulating material to reduce leakage and short circuit risk, and the housing 100 may be made of other suitable materials.
The mounting frame 200 is connected to the top end of the housing 100, the mounting frame 200 may be connected to the top end of the housing 100 by a fastener, a clamping connection, or other suitable means, and the mounting frame 200 may cover the top end of the accommodating cavity 101.
The battery cells 300 are accommodated in the accommodating cavity 101 side by side, the top ends of the battery cells 300 are connected to the mounting frame 200, for example, the mounting frame 200 can be provided with a plurality of bus bars, the top ends of the battery cells 300 can be provided with electrode lugs, the electrode lugs are connected with the bus bars, the bottom ends of the battery cells 300 can be in contact with the bottom ends of the accommodating cavity 101 of the shell 100, gaps can be reserved, and the battery cells 300 are borne on the mounting frame 200 and indirectly borne on the shell 100 through the mounting frame 200.
In the utility model, when assembling the battery, the top ends of the plurality of battery cells 300 are connected to the mounting frame 200, then the plurality of battery cells 300 are placed in the accommodating cavity 101 of the housing 100, then the mounting frame 200 is connected with the top end of the housing 100 to be assembled into a battery cell assembly, and finally the battery cell assembly is mounted in the box body of the battery.
Compared with the existing battery, the whole weight of the battery cell assembly is born through the bottom end of the battery cell 300, and the battery cell assembly comprises a plurality of battery cells 300 which are born on the shell 100 through the mounting frame 200 at the top end of the battery cell assembly and are born on the box body of the battery through the shell 100, so that the bottom end of the battery cell 300 does not need to bear the whole weight of the battery cell assembly, and further bending deformation and even fracture caused by overlarge pressure born by the bottom end of the battery cell 300 can be prevented, and the service life of the battery cell 300 is longer.
Referring to fig. 1 to 3, in some embodiments of the present utility model, four corner positions of the top end of the side wall of the housing 100 are respectively provided with the fixing portions 102, four corner positions of the mounting frame 200 are correspondingly provided with the protrusions 201, and the protrusions 201 are connected with the fixing portions 102 by fasteners. In this embodiment, through the fastener connection between four convex parts 201 of mounting bracket 200 and four fixed parts 102 of casing 100, can realize that mounting bracket 200 and casing 100 can dismantle the connection, it is comparatively convenient to connect, and four convex parts 201 are located four corner positions of mounting bracket 200 respectively moreover, and four fixed parts 102 are located four corner positions on the top of casing 100 respectively, so set up for mounting bracket 200 is connected more firmly with casing 100, reduces the vibration condition of mounting bracket 200 appearance.
It should be noted that, in other embodiments of the present utility model, the fixing portion 102 may be disposed at other positions of the housing 100, and the protruding portion 201 may be disposed at other positions of the mounting frame 200.
Referring to fig. 1 and 2, in some embodiments of the present utility model, the fixing portion 102 includes two fixing plates 103 perpendicular to each other, wherein an end surface of one fixing plate 103 is attached to an outer sidewall of the housing 100 and connected to the housing 100 by a fastener, and an end surface of the other fixing plate 103 is attached to a bottom surface of the protrusion 201 and connected to the protrusion 201 by a fastener. In this embodiment, the fixed part 102 is set to two continuous and mutually perpendicular fixed plates 103, and the face of two fixed plates 103 is laminated in the bottom surface of the lateral wall of casing 100 and convex part 201 respectively, so, not only installation fastener is more convenient, and fixed part 102 overall structure intensity is higher moreover, is difficult to damage more, and life is longer.
Referring to fig. 1 to 5, in some embodiments of the present utility model, a clamping groove 104 is formed at a top end of a side wall of a housing 100, a mounting frame 200 is provided with a clamping structure 202, and the clamping structure 202 and the clamping groove 104 are mutually clamped. Besides being connected with the shell 100 through the fastener between the fixing part 102 and the convex part 201, the mounting frame 200 is also clamped with the clamping groove 104 through the matching of the clamping structure 202, so that the connection between the mounting frame 200 and the shell 100 is more stable.
Referring to fig. 1 to 5, in some embodiments of the present utility model, the clamping groove 104 is provided with a plurality of clamping structures 202, each clamping structure comprises a plurality of first clamping members 203 and a plurality of second clamping members 204, the plurality of first clamping members 203 are respectively arranged at two sides of the mounting frame 200 along the first horizontal direction, the first clamping members 203 are located between two adjacent protruding portions 201, the first clamping members 203 are clamped in the clamping groove 104, the plurality of second clamping members 204 are respectively arranged at two sides of the mounting frame 200 along the second horizontal direction, the second clamping members 204 are located between two adjacent protruding portions 201, and the second clamping members 204 are clamped in the clamping groove 104, wherein the first horizontal direction is perpendicular to the second horizontal direction. That is, the clamping members are arranged around the mounting frame 200, so that the clamping of the mounting frame 200 and the housing 100 is more stable, the clamping members are located between two adjacent convex portions 201, for example, the clamping members can be located at the middle position of the top end of the side wall of the housing 100, and besides the connection of the corner position of the mounting frame 200 and the corner position of the housing 100, the position of the side wall of the mounting frame 200 close to the middle is also connected with the position of the side wall of the housing 100 close to the middle, so that the connection of the mounting frame 200 and the housing 100 is more stable.
Referring to fig. 4 and 5, in some embodiments of the present utility model, the first clamping member 203 includes a first connecting portion 205 and a first fastening portion 206, the first connecting portion 205 is located on the outer side of the housing 100, the first fastening portion 206 is connected to the first connecting portion 205 and fastened in the fastening slot 104, the second clamping member 204 includes a second connecting portion 207 and a second fastening portion 208, the second connecting portion 207 is located on the inner side of the housing 100, and the second fastening portion 208 is connected to the second connecting portion 207 and fastened in the fastening slot 104.
Compared with all the clamping members being located at the outer side of the housing 100, the second connecting portion 207 of the second clamping member 204 of the embodiment is located at the inner side of the housing 100, the battery cell 300 can limit the second connecting portion 207, and the second connecting portion 207 is prevented from deforming and swinging in an excessive manner, so that the second clamping portion 208 on the second connecting portion 207 can be tightly clamped in the corresponding clamping groove 104, and the connection between the mounting rack 200 and the housing 100 is more stable. Compared with the case 100 in which all the clamping members are located at the inner side of the case 100, the first connecting portion 205 of the first clamping member 203 of this embodiment is located at the outer side of the case 100, so that the first connecting portion 205 is convenient to swing outwards, when the mounting frame 200 is required to be separated from the case 100, the first connecting portion 205 can swing outwards, the first fastening portion 206 on the first connecting portion 205 is separated from the corresponding fastening slot 104, and then the second fastening portion 208 on the second connecting portion 207 is separated from the corresponding fastening slot 104, so that the mounting frame 200 is more convenient to detach, and time and labor are saved. In this embodiment, the first clamping member 203 and the second clamping member 204 are so arranged, so that the mounting frame 200 is ensured to be firmly clamped with the housing 100, and meanwhile, the mounting frame 200 is convenient to detach, and the practicability is better.
Referring to fig. 5, in some embodiments of the present utility model, the mounting bracket 200 abuts against the top surface of the sidewall of the case 100. In this way, the whole weight of the mounting frame 200 and the battery cell 300 is directly borne on the side wall of the housing 100 through the mounting frame 200, and the side wall of the housing 100 is not required to be borne by the convex part 201 or the clamping structure 202, so that damage caused by overlarge acting force borne by the convex part 201 or the clamping structure 202 can be avoided.
Referring to fig. 1 and 3, in some embodiments of the present utility model, the top end of the mounting frame 200 is provided with a plurality of support columns 209, and the battery cell assembly further includes a BMS module 400, the BMS module 400 is connected to the top ends of the support columns 209, and the top end of the mounting frame 200 is provided with an annular insulating plate 210 surrounding the BMS module 400. The BMS module 400 can include the mounting substrate and locate the battery management system on the mounting substrate, and BMS is the english abbreviation of battery management system, and BMS module 400 can improve the utilization ratio of battery, prevents that the battery from appearing overcharge and overdischarge's condition, prolongs the life of battery, monitors the state of battery. The power lines, the equalization harness, the sampling harness, and the communication harness of the battery pack may all be connected to the BMS module 400. In addition, set up a plurality of support columns 209 on mounting bracket 200, BMS module 400 can be connected in the top of support column 209 or the direct welding in the top of support column 209 through the fastener, so, not only make BMS module 400 installation comparatively convenient, can make between BMS module 400 and the mounting bracket 200 clearance moreover, and then make the radiating effect better. In addition, the mounting frame 200 is provided with an annular insulating plate 210 surrounding the BMS module 400, and the annular insulating plate 210 can be made of an electrically insulating material, so that leakage and short circuit risks can be reduced, and safety is better.
A battery according to an embodiment of the second aspect of the present utility model comprises the cell assembly of the embodiment of the first aspect described above.
For example, the battery may further include a case, and the cell assembly may be mounted in the case.
By adopting the battery cell assembly according to the embodiment of the utility model, compared with the existing battery, the whole weight of the battery cell assembly is born by the bottom end of the battery cell 300, and the battery cell assembly of the utility model has the advantages that a plurality of battery cells 300 are born on the shell 100 through the mounting frame 200 at the top ends of the battery cell assembly, and then are born on the box body of the battery through the shell 100, so that the bottom end of the battery cell 300 does not need to bear the whole weight of the battery cell assembly, and further, the situation that the bottom end of the battery cell 300 is subjected to excessive pressure to cause bending deformation or even fracture can be prevented, and the service life of the battery cell 300 is longer.
It should be noted that, since the battery may adopt all the technical solutions of the electrical core assembly according to the embodiment of the first aspect, at least all the beneficial effects brought by the technical solutions of the embodiment of the first aspect are provided, and these additional beneficial effects are not described herein.
It is understood that other constructions and operations of batteries according to embodiments of the present utility model are known to those of ordinary skill in the art and will not be described in detail herein.
An electric two-wheeled vehicle according to an embodiment of a third aspect of the present utility model includes the battery of the embodiment of the second aspect described above.
According to the electric two-wheeled vehicle according to the embodiment of the utility model, compared with the existing battery, the battery adopting the second embodiment of the utility model has the advantages that the whole weight of the battery core assembly is born by the bottom end of the battery core 300, and the battery core assembly comprises a plurality of battery cores 300 which are born on the shell 100 through the mounting frame 200 at the top ends of the battery cores and then are born on the box body of the battery through the shell 100, so that the bottom end of the battery core 300 does not need to bear the whole weight of the battery core assembly, and further, the situation that the bottom end of the battery core 300 is subjected to excessive pressure to cause bending deformation or even fracture can be prevented, and the service life of the battery core 300 is longer.
It should be noted that, since the electric two-wheeled vehicle may adopt all the technical solutions of the electric core assembly according to the embodiment of the first aspect, at least all the beneficial effects brought by the technical solutions of the embodiment of the first aspect are provided, and these additional beneficial effects are not described herein.
It will be appreciated that other constructions and operations of the electric two-wheeled vehicle according to the embodiments of the present utility model are known to those skilled in the art and will not be described in detail herein.
The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.