CN115275481B - Battery system - Google Patents
Battery system Download PDFInfo
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- CN115275481B CN115275481B CN202210765073.4A CN202210765073A CN115275481B CN 115275481 B CN115275481 B CN 115275481B CN 202210765073 A CN202210765073 A CN 202210765073A CN 115275481 B CN115275481 B CN 115275481B
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- Prior art keywords
- longitudinal beam
- fixing
- positioning
- battery
- box body
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
- H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a battery system, which comprises a hollow lower box body; the top of the lower box body is covered and provided with an upper box body; a plurality of battery stacks are arranged on the bottom plate of the lower box body; a second fixing component which is transversely distributed is respectively arranged between any two adjacent battery stacks; the front side and the rear side of the whole battery stack body formed by the plurality of battery stacks are respectively provided with a first fixing component which is transversely distributed; the right side of the whole battery stack body formed by a plurality of battery stacks is provided with a first longitudinal beam which is longitudinally distributed; the cavity between the first longitudinal beam and the right side wall of the lower box body is an electric component mounting cavity; the left inner wall of the lower box body is provided with a second longitudinal beam positioning piece at a position corresponding to the left ends of the first fixing member and the second fixing member; the invention optimizes the box structure, not only can absorb the expansion force of the battery, but also can reduce the space occupied by the end plate, improve the space utilization rate of the battery system and improve the energy density of the battery system.
Description
Technical Field
The invention relates to the technical field of lithium ion power battery assembly, in particular to a battery system.
Background
At present, the lithium ion battery has the advantages of high specific energy, multiple recycling times, long storage time and the like, is widely applied to portable electronic equipment (such as mobile phones, digital cameras and portable computers) and is widely applied to large and medium-sized electric equipment such as electric automobiles, electric bicycles, electric tools and the like, so that the performance requirement on the lithium ion battery is higher and higher.
With the development of new energy industries, in order to improve energy density, lithium ion power battery systems tend to be de-modularized. However, most CTP schemes from the battery cell to the battery PACK (PACK) proposed in the current market adopt an independent end plate structure, and require more space, which restricts the space in the battery box body, and is not beneficial to continuously improving the energy density of the lithium ion power battery system.
Disclosure of Invention
The invention aims at overcoming the technical defects existing in the prior art and provides a battery system.
To this end, the present invention provides a battery system comprising an open-topped, hollow lower case;
the top of the lower box body is covered and provided with an upper box body;
a plurality of transversely distributed battery stacks are arranged on the bottom plate of the lower box body;
a second fixing component which is transversely distributed is respectively arranged between any two adjacent battery stacks;
the front side and the rear side of the whole battery stack body formed by the plurality of battery stacks are respectively provided with a first fixing component which is transversely distributed;
the right side of the whole battery stack body formed by a plurality of battery stacks is provided with a first longitudinal beam which is longitudinally distributed;
the cavity between the first longitudinal beam and the right side wall of the lower box body is an electric component mounting cavity;
the left inner wall of the lower box body is provided with a second longitudinal beam positioning piece at a position corresponding to the left end of each first fixing member and the left end of each second fixing member;
each battery stack body comprises a plurality of battery cells which are longitudinally arranged in parallel;
a foam pad is arranged between any two adjacent battery monomers;
the left side and the right side of the battery stack body are respectively provided with an end plate which is longitudinally and vertically distributed;
each second fixing member comprises second reinforcing parts which are transversely distributed;
the front side and the rear side of the bottom of each second reinforcing part are respectively provided with a second fixing part;
the left end and the right end of each second fixing part are respectively provided with a second front end positioning part in a protruding mode;
the bottom surface of the second fixing part is fixed at the bottom of the lower box body in a welding or bonding connection mode.
Preferably, each first fixing member includes a first reinforcing portion distributed in a lateral direction, respectively;
the front side and the rear side of the bottom of each first reinforcing part are respectively provided with a first fixing part;
each first fixing part comprises a first fixing surface which is horizontally distributed and a second fixing surface which is vertically distributed;
the first fixing surface and the second fixing surface are mutually and perpendicularly connected;
wherein, for the first fixed part positioned at the front side of the bottom of the first reinforcing part, the left and right ends of the first fixed surface are respectively provided with a first front end positioning part in a protruding way;
the first fixing surface is fixed at the bottom of the lower box body in a welding or bonding connection mode.
Preferably, the end plate is uniformly provided with a plurality of second elastic members on an outer side surface remote from the battery cell;
a limiting beam protruding outwards is arranged between any two adjacent second elastic members;
the end plates are respectively provided with a first elastic component at the middle parts of the front end and the rear end of the outer side far away from the battery cell;
the first elastic member and the second elastic member are connected to the outer side surface of the end plate by adhesion.
Preferably, the first stringer comprises longitudinally distributed first stringer mounts;
the first longitudinal beam mounting piece is respectively provided with a first longitudinal beam positioning piece at a position corresponding to the right end of each first fixing member and each second fixing member;
the first rail positioning member is bolted to the first rail mounting member.
Preferably, the first stringer mount comprises a plurality of first stringer monomers distributed longitudinally;
any two adjacent first longitudinal beam monomers are connected through a first longitudinal beam mounting piece fixing part;
the first longitudinal beam mounting piece fixing parts face the front end and the rear end of one side of the battery stack body, and are respectively provided with a first longitudinal beam mounting piece positioning part which is vertically distributed;
a first longitudinal beam mounting piece positioning groove is formed between the two first longitudinal beam mounting piece positioning parts;
the first longitudinal beam positioning piece is correspondingly clamped with the first longitudinal beam mounting piece positioning groove;
the height of the first longitudinal beam mounting piece fixing part is lower than the height of the first longitudinal beam single body.
Preferably, a first rail mount fixing hole is provided at the top of the first rail mount fixing portion;
the top of the first longitudinal beam positioning piece is provided with a first longitudinal beam positioning piece fixing hole at a position corresponding to the first longitudinal beam mounting piece fixing hole;
the top of the first longitudinal beam positioning piece is connected with the top of the first longitudinal beam mounting piece fixing part through a bolt, and the bolt passes through the first longitudinal beam positioning piece fixing hole and the first longitudinal beam mounting piece fixing hole which correspond to the positions.
Preferably, each first longitudinal beam positioning piece comprises first longitudinal beam positioning piece positioning parts which are distributed up and down;
the upper end and the lower end of the first longitudinal beam positioning piece positioning part are respectively provided with a first longitudinal beam positioning piece fixing part;
the first longitudinal beam positioning piece fixing part is positioned at the lower end of the first longitudinal beam positioning piece positioning part and is fixedly connected with the bottom of the lower box body through a bolt;
the first longitudinal beam positioning piece fixing part is positioned at the upper end of the first longitudinal beam positioning piece positioning part and is connected with the top of the first longitudinal beam mounting piece fixing part through a bolt;
the first longitudinal beam positioning piece positioning part is correspondingly clamped with the first longitudinal beam mounting piece positioning groove in the first longitudinal beam mounting piece.
Preferably, the first front end positioning parts at two ends of the first fixing member are correspondingly and cooperatively connected with a gap between the first longitudinal beam positioning piece and the top surface of the bottom plate of the lower box body and a gap between the second longitudinal beam positioning piece and the top surface of the bottom plate of the lower box body respectively;
and the second front end positioning parts at two ends of the second fixing member are correspondingly matched and connected with the gap between the first longitudinal beam positioning piece and the top surface of the bottom plate of the lower box body and the gap between the second longitudinal beam positioning piece and the top surface of the bottom plate of the lower box body respectively.
Preferably, the upper box body and the lower box body are connected through a plurality of bolts distributed in a surrounding manner.
Compared with the prior art, the battery system provided by the invention has the advantages that the structural design is scientific, the box body structure is optimized, the composite form of the end plate and the longitudinal beam is provided, the expansion force of the battery can be absorbed, the space occupied by the end plate can be reduced, the space utilization rate of the battery system is improved, the energy density of the battery system is improved, and the battery system has great practical significance.
In addition, for the battery system provided by the invention, the positioning component for positioning the battery cells is additionally arranged, so that the installation mode that the battery cells are directly assembled to the box body can be realized, the system assembly can be centralized in the box body, and the assembly time is greatly shortened.
Drawings
Fig. 1 is a schematic perspective view of a battery system according to the present invention;
fig. 2 is a schematic view illustrating an internal assembly of a battery system according to the present invention;
fig. 3 is an exploded view of a battery stack in a battery system according to the present invention;
fig. 4 is a partial enlarged view of the peripheral portion B shown in fig. 2;
fig. 5 is a schematic view of an end plate structure in a battery system according to the present invention;
fig. 6 is an assembly schematic diagram of a structural member in a case in the battery system according to the present invention;
fig. 7a is a schematic structural view of a first fixing member in a battery system according to the present invention;
fig. 7b is an enlarged view of the right end of the first fixing member in the battery system according to the present invention; the left end structure of the first fixing member is the same;
fig. 8 is a schematic structural view of a second fixing member in the battery system according to the present invention;
FIG. 9 is a schematic view of a first rail mount in a battery system according to the present invention;
fig. 10 is a schematic view of a first rail positioning member in a battery system according to the present invention.
In the figure, 1 is an upper box body, 2 is a lower box body, and 3 is a first longitudinal beam;
31 is a first side member mounting member, 311 is a first side member mounting member fixing portion, and 312 is a first side member mounting member positioning portion;
32 is a first stringer positioning piece, 321 is a first stringer positioning piece fixing portion, and 322 is a first stringer positioning piece positioning portion;
4 is a second longitudinal beam positioning piece, 5 is a first fixing member, and 51 is a fixing part; 511 is a first fixing surface and 512 is a second fixing surface
52 is a reinforcing part, 53 is a front end positioning part; 6 is a second fixing member, 7 is a battery stack;
71 is an end plate, 711 is a first elastic member, 712 is a second elastic member, 713 is a restraining beam;
72 is a battery cell and 73 is a foam pad.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
The invention will be described in detail below with reference to the drawings in connection with embodiments.
Referring to fig. 1 to 10, the present invention provides a battery system including a hollow lower case 2 having an open top;
the top of the lower box body 2 is covered and provided with an upper box body 1;
a plurality of laterally distributed battery stacks 7 (not limited to the four shown in fig. 2) are provided on the bottom plate of the lower case 2;
a second fixing member 6 which is transversely distributed is respectively arranged between any two adjacent battery stacks 7;
the front side and the rear side of the whole battery stack body formed by the plurality of battery stacks 7 are respectively provided with a first fixing member 5 which is transversely distributed;
the right side of the whole battery stack body formed by a plurality of battery stacks 7 is provided with a first longitudinal beam 3 which is longitudinally distributed;
the cavity between the first longitudinal beam 3 and the right side wall of the lower box body 2 is an electric component mounting cavity 100 for mounting the existing electric component;
the left inner wall of the lower case 2 is provided with one second side member positioning piece 4 at a position corresponding to each first fixing member 5 (specifically, the first front end positioning portion 53) and the left end (specifically, the second front end positioning portion 63) of each second fixing member 6, respectively.
In the invention, the upper box body 1 and the lower box body 2 are connected through a plurality of bolts distributed in a surrounding manner.
In the present invention, in particular, each second fixing member 6 comprises a second reinforcing portion 62 distributed transversely;
the front and rear sides of the bottom of each second reinforcement part 62 are respectively provided with a second fixing part 61;
each of the second fixing portions 61 has a second front end positioning portion 63 protruding from both left and right ends thereof.
In particular, the bottom surface of the second fixing portion 61 is fixed to the bottom of the lower case 2 (i.e., the top surface of the bottom plate) by means of welding or bonding.
In the present invention, in a specific implementation, each first fixing member 5 includes a first reinforcing portion 52 distributed in the lateral direction;
the front and rear sides of the bottom of each first reinforcing part 52 are respectively provided with a first fixing part 51;
each first fixing portion 51 includes a first fixing surface 511 horizontally distributed and a second fixing surface 512 vertically distributed;
the first fixing surface 511 and the second fixing surface 512 are connected perpendicularly to each other;
the first fixing portion 51 located on the front side of the bottom of the first reinforcing portion 52 has a first front end positioning portion 53 protruding from each of the left and right ends of the first fixing surface 511.
In particular, the first fixing surface 511 is fixed to the bottom of the lower case 2 (i.e., the top surface of the bottom plate) by means of welding or bonding.
The first fixing portion 51 includes a first fixing surface 511 and a second fixing surface 512; the second fixing parts 61 of the two adjacent second fixing members 6 and the second fixing parts 61 of each second fixing member 6 and the fixing parts 51 of the adjacent first fixing members 5 are used for limiting and fixing the battery cells, and the using amount of the adhesive at the bottoms of the second fixing parts 61 and the first fixing parts 51 can be limited; the first reinforcing portion 52 serves to reinforce the structural strength of the lower case 2.
In the present invention, in particular, each of the battery stacks 7 includes a plurality of battery cells 72 arranged longitudinally side by side;
a foam pad 73 is arranged between any two adjacent battery monomers 72;
the left and right sides of the cell stack 7 are provided with one end plate 71 vertically distributed in the longitudinal direction, respectively.
The plurality of battery cells 72 are stacked in the lower case 2 in this order in the width direction of the battery cells.
In particular, the end plate 71 is uniformly provided with a plurality of second elastic members 712 on the outer side surface remote from the battery cells 72;
between any adjacent two of the second elastic members 712, a stopper beam 713 protruding in an outward direction (i.e., a direction away from the battery cell 72) is provided;
the end plates 71 are provided with a first elastic member 711 at the middle of the front and rear ends of the outer side surface remote from the battery cells 72, respectively.
Specifically, the first elastic member 711 and the second elastic member 712 are connected to the outer surface (flat surface) of the end plate 71 by adhesion.
Specifically, the first elastic member 711 and the second elastic member 712 of the end plate 71 are bonded to the first rail mount 31 of the adjacent first rail 3 or the left inner wall of the adjacent lower case 2.
The first elastic member 711 is used to provide a biasing force of the cell stack 7. The second elastic member 712 serves to mainly absorb the expansion force of the battery cell 72 while cooperating with the first elastic member 711 to provide a sufficient pre-tightening force to the battery stack 7; the stopper beams 713 serve to limit the maximum size of the battery expansion.
In the present embodiment, the first longitudinal beam 3 includes first longitudinal beam mounting members 31 longitudinally distributed;
the first side member mounts 31 are provided with one first side member positioning piece 32, respectively, at positions corresponding to the right ends (specifically, the first front end positioning portion 53 and the second front end positioning portion 63) of each first fixing member 5 and each second fixing member 6;
the first stringer positioning member 32 is bolted to the first stringer mounting member 31;
in particular, the first stringer mount 31 includes a plurality of first stringer monomers 310 distributed longitudinally;
any two adjacent first longitudinal beam monomers 310 are connected through a first longitudinal beam mounting piece fixing part 311;
the first longitudinal beam mounting member fixing portions 311 are provided with a first longitudinal beam mounting member positioning portion 312 vertically distributed toward front and rear ends of one side of the battery stack 7, respectively;
a first rail mount locating groove 314 is provided between the two first rail mount locating portions 312;
the first rail positioning member 32 is engaged with the first rail mounting member positioning groove 314.
Specifically, the height of the first rail mounting member fixing portion 311 is lower than the height of the first rail unit 310.
Specifically, a first rail mounting piece fixing hole 3110 is provided at the top of the first rail mounting piece fixing portion 311;
the top portion of the first side member positioner 32 (specifically, the first side member positioner fixing portion 321 at the upper end) is provided with a first side member positioner fixing hole at a position corresponding to the first side member mount fixing hole 3110.
Specifically, the top of the first rail positioning member 32 is connected to the top of the first rail mounting member fixing portion 311 by a bolt passing through the first rail positioning member fixing hole and the first rail mounting member fixing hole 3110 corresponding in position.
In particular, each first stringer positioning member 32 includes a first stringer positioning member positioning portion 322 disposed vertically;
the upper and lower ends of the first longitudinal beam positioning piece positioning part 322 are respectively provided with a first longitudinal beam positioning piece fixing part 321;
the first longitudinal beam positioning piece fixing part 321 is positioned at the lower end of the first longitudinal beam positioning piece positioning part 322 and is fixedly connected with the bottom of the lower box body 2 through bolts;
the first longitudinal beam positioning piece fixing part 321 positioned at the upper end of the first longitudinal beam positioning piece positioning part 322 is connected with the top of the first longitudinal beam mounting piece fixing part 311 through bolts;
the first rail positioning piece positioning portion 322 is engaged with the first rail mounting piece positioning groove 314 of the first rail mounting piece 31.
The first front end positioning portions 53 at the two ends of the first fixing member 5 are correspondingly and cooperatively connected (e.g., inserted) with the gap between the first longitudinal beam positioning element 32 and the top surface of the bottom plate of the lower case 2 and the gap between the second longitudinal beam positioning element 4 and the top surface of the bottom plate of the lower case 2, respectively;
the second front end positioning portions 63 at both ends of the second fixing member 6 are respectively and correspondingly connected (e.g., inserted) with the gap between the first side member positioning piece 32 and the bottom plate top surface of the lower case 2 and the gap between the second side member positioning piece 4 and the bottom plate top surface of the lower case 2.
The first stringer positioning member 32 is used to position the first stringer mounting member 31, and the first stringer mounting member 31 is used to position the end plate 71 of the cell stack 7 and to provide end positioning of the cell stack 7 to form a cavity that absorbs expansion forces.
In the present invention, the upper case 1 has a sheet metal structure, and the lower case 2 is connected to the first side member 3 to form a cavity that can accommodate the battery stack 7 and an electrical component mounting chamber 100 for mounting electrical components.
It should be noted that, for the battery system provided by the invention, the space utilization rate of the battery system is improved by adopting a mode of compounding the longitudinal beam and the end plate, the energy density of the battery system is improved, and meanwhile, the elastic member is arranged on the end plate and is used for providing the pretightening force of the battery and absorbing the expansion force of the battery. In addition, for the invention, through designing the fixing component at the bottom of the box body, the installation mode of directly assembling the battery monomer to the box body can be realized, the system assembling step is simplified, the transferring time during the system assembling is shortened, and the production efficiency is improved.
In order to more clearly understand the technical solution of the present invention, the assembly process of the present invention is described below.
The battery system of the invention is assembled mainly by the following two steps:
first, the lower case 2 is assembled, which includes the lower case 2, the first side member 3, the second side member positioning member 4, and a plurality of first and second fixing members 5 and 6.
The method comprises the following steps: first, the first side member 3 and the second side member positioning piece 4 are installed in the lower case 2 according to the fixing positions, and the first fixing member 5 and the second fixing member 6 are connected with the side walls of the first side member 3 and the second side member positioning piece 4 by the front end positioning portions thereon in a fitting manner, so as to be fixed in the lower case 2, as shown in fig. 2.
And a second step, stacking the battery cells to form a system.
The method comprises the following steps: the end plate 71 is first attached to the second side member positioning piece 4 according to the position of the first elastic member 711.
Subsequently, the battery cells 72 and the foam pads 73 are positioned and stacked in accordance with the fixing planes formed by the first fixing member 5 and the second fixing member 6, respectively.
Finally, the end plate 71 at the other end of the battery stack 7 is mounted on the first side member mounting member 31 in a positioning structure, and the first side member positioning member fixing hole and the first side member mounting member fixing hole 3110 are overlapped by pressing the first side member mounting member 31, and finally, the mounting of the entire battery system structure is completed by bolting.
In summary, compared with the prior art, the battery system provided by the invention has the advantages that the structural design is scientific, the box body structure is optimized, the composite form of the end plate and the longitudinal beam is provided, the expansion force of the battery can be absorbed, the space occupied by the end plate can be reduced, the space utilization rate of the battery system is improved, the energy density of the battery system is improved, and the battery system has great practical significance.
In addition, for the battery system provided by the invention, the positioning component for positioning the battery cells is additionally arranged, so that the installation mode that the battery cells are directly assembled to the box body can be realized, the system assembly can be centralized in the box body, and the assembly time is greatly shortened.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (9)
1. A battery system characterized by comprising a hollow lower case (2) with an open top;
the top of the lower box body (2) is covered with an upper box body (1);
a plurality of transversely distributed battery stacks (7) are arranged on the bottom plate of the lower box body (2);
a second fixing component (6) which is transversely distributed is respectively arranged between any two adjacent battery stacks (7);
the front side and the rear side of the whole battery stack body formed by the battery stacks (7) are respectively provided with a first fixing component (5) which is transversely distributed;
the right side of the whole battery stack body formed by a plurality of battery stacks (7) is provided with a first longitudinal beam (3) which is longitudinally distributed;
the cavity between the first longitudinal beam (3) and the right side wall of the lower box body (2) is an electric component mounting cavity (100);
the left side inner wall of the lower box body (2) is respectively provided with a second longitudinal beam positioning piece (4) at the position corresponding to the left end of each first fixing member (5) and each second fixing member (6);
each of the battery stacks (7) includes a plurality of battery cells (72) arranged longitudinally side by side, respectively;
foam gaskets (73) are arranged between any two adjacent battery monomers (72);
the left side and the right side of the battery stack body (7) are respectively provided with an end plate (71) which is vertically distributed in the longitudinal direction;
each second fixing member (6) comprises a second reinforcing portion (62) distributed in the transverse direction;
the front side and the rear side of the bottom of each second reinforcing part (62) are respectively provided with a second fixing part (61);
the left end and the right end of each second fixing part (61) are respectively provided with a second front end positioning part (63) in a protruding mode;
the bottom surface of the second fixing part (61) is fixed at the bottom of the lower box body (2) through a welding or bonding connection mode.
2. The battery system according to claim 1, wherein each first fixing member (5) includes a first reinforcing portion (52) distributed laterally, respectively;
the front side and the rear side of the bottom of each first reinforcing part (52) are respectively provided with a first fixing part (51);
each first fixing part (51) comprises a first fixing surface (511) which is horizontally distributed and a second fixing surface (512) which is vertically distributed;
the first fixing surface (511) and the second fixing surface (512) are mutually and vertically connected;
wherein, for the first fixed part (51) positioned at the front side of the bottom of the first reinforcing part (52), the left and right ends of the first fixed surface (511) are respectively provided with a first front end positioning part (53) in a protruding way;
the first fixing surface (511) is fixed at the bottom of the lower box body (2) through a welding or bonding connection mode.
3. The battery system according to claim 1, wherein the end plate (71) is provided with a plurality of second elastic members (712) uniformly on an outer side surface remote from the battery cells (72);
a limiting beam (713) protruding outwards is arranged between any two adjacent second elastic members (712);
the end plates (71) are respectively provided with a first elastic member (711) at the middle parts of the front end and the rear end of the outer side far away from the battery cell (72);
the first elastic member (711) and the second elastic member (712) are connected to the outer surface of the end plate (71) by adhesion.
4. A battery system according to any one of claims 1 to 3, characterized in that the first longitudinal beam (3) comprises longitudinally distributed first longitudinal beam mounts (31);
the first longitudinal beam mounting piece (31) is respectively provided with a first longitudinal beam positioning piece (32) at a position corresponding to the right end of each first fixing member (5) and each second fixing member (6);
the first stringer positioning member (32) is bolted to the first stringer mounting member (31).
5. The battery system of claim 4, wherein the first rail mount (31) comprises a plurality of first rail cells (310) longitudinally distributed;
any two adjacent first longitudinal beam monomers (310) are connected through a first longitudinal beam mounting piece fixing part (311);
the first longitudinal beam mounting piece fixing parts (311) face the front end and the rear end of one side of the battery stack body (7), and are respectively provided with a first longitudinal beam mounting piece positioning part (312) which is vertically distributed;
a first longitudinal beam mounting piece positioning groove (314) is arranged between the two first longitudinal beam mounting piece positioning parts (312);
the first longitudinal beam positioning piece (32) is correspondingly clamped with the first longitudinal beam mounting piece positioning groove (314);
the height of the first stringer attachment piece fixing portion (311) is lower than the height of the first stringer single body (310).
6. The battery system according to claim 5, wherein a first rail mount fixing hole (3110) is provided at a top of the first rail mount fixing portion (311);
the top of the first longitudinal beam positioning piece (32) is provided with a first longitudinal beam positioning piece fixing hole at a position corresponding to the first longitudinal beam mounting piece fixing hole (3110);
the top of the first longitudinal beam positioning piece (32) is connected with the top of the first longitudinal beam mounting piece fixing part (311) through bolts, and the bolts penetrate through the first longitudinal beam positioning piece fixing holes and the first longitudinal beam mounting piece fixing holes (3110) corresponding to the positions.
7. The battery system of claim 4, wherein each first rail positioning member (32) includes a first rail positioning member positioning portion (322) disposed vertically;
the upper end and the lower end of the first longitudinal beam positioning piece positioning part (322) are respectively provided with a first longitudinal beam positioning piece fixing part (321);
the first longitudinal beam positioning piece fixing part (321) is positioned at the lower end of the first longitudinal beam positioning piece positioning part (322) and is fixedly connected with the bottom of the lower box body (2) through bolts;
the first longitudinal beam positioning piece fixing part (321) positioned at the upper end of the first longitudinal beam positioning piece positioning part (322) is connected with the top of the first longitudinal beam mounting piece fixing part (311) through bolts;
and the first longitudinal beam positioning piece positioning part (322) is correspondingly clamped with the first longitudinal beam mounting piece positioning groove (314) in the first longitudinal beam mounting piece (31).
8. The battery system according to claim 2, wherein first front end positioning portions (53) at both ends of the first fixing member (5) are respectively connected in correspondence with a gap between the first side member positioning piece (32) and the bottom plate top surface of the lower case (2) and a gap between the second side member positioning piece (4) and the bottom plate top surface of the lower case (2);
second front end locating parts (63) at two ends of the second fixing member (6) are correspondingly matched and connected with gaps between the first longitudinal beam locating piece (32) and the top surface of the bottom plate of the lower box body (2) and gaps between the second longitudinal beam locating piece (4) and the top surface of the bottom plate of the lower box body (2) respectively.
9. A battery system according to any one of claims 1 to 3, characterized in that the upper case (1) and the lower case (2) are connected by a plurality of bolts distributed around them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210765073.4A CN115275481B (en) | 2022-07-01 | 2022-07-01 | Battery system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210765073.4A CN115275481B (en) | 2022-07-01 | 2022-07-01 | Battery system |
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| CN115275481B true CN115275481B (en) | 2023-09-05 |
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| WO2021217967A1 (en) * | 2020-04-30 | 2021-11-04 | 昆山宝创新能源科技有限公司 | Battery module, battery pack and vehicle |
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| CN216389565U (en) * | 2021-06-15 | 2022-04-26 | 红安力神动力电池系统有限公司 | Novel frame-type square battery module structure |
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| WO2021217967A1 (en) * | 2020-04-30 | 2021-11-04 | 昆山宝创新能源科技有限公司 | Battery module, battery pack and vehicle |
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| CN115275481A (en) | 2022-11-01 |
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