Non-modular battery pack structure
Technical Field
The invention belongs to the technical field of automobile batteries, and particularly relates to a non-modular battery pack structure.
Background
The electric bus has the advantages of low noise, high driving stability, zero emission and the like, and has positive significance for maintaining national energy safety, reducing exhaust emission, promoting the development of the automobile industry and further ensuring the social sustainable development.
In the prior art, the single batteries are assembled into a module and then are installed in a battery box body in a bolt fixing mode. The shape of the battery case varies according to the change in the vehicle body structure. Therefore, the product design and development period is longer, and the large-scale production is not facilitated. Because the difference between different automobile types is great, the battery package shape is different, and then has increased the degree of difficulty and the development input of development.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provide the non-modular battery pack structure which is simple in structure, reduces the types of accessories, simplifies the production process, realizes large-scale production, greatly shortens the development period and is wide in application range.
In order to achieve the purpose, the invention adopts the technical scheme that: the non-modular battery pack structure comprises a box body, wherein an electric core is arranged in the box body, the box body comprises a lower box body and an upper box cover, wedge blocks are arranged in a gap between the box body and the electric core, the wedge blocks comprise first wedge blocks arranged at two ends of the box body and second wedge blocks arranged at two sides of the box body, and mounting seats used for mounting and positioning the first wedge blocks are arranged at two ends of the box body.
In order to make the technical scheme more detailed and concrete, the invention also provides the following further preferable technical scheme to obtain satisfactory practical effect:
the first wedge block comprises a first wedge block upper section and a first wedge block lower section, the inner wall surface of the first wedge block lower section, facing to one side of the battery core, is a vertical surface, the outer wall surface is an inclined surface which is inclined to the outside gradually from bottom to top, and a limiting boss connected to the mounting seat is arranged at the transition connection position of the first wedge block lower section and the first wedge block upper section.
The mounting seat comprises a supporting bottom surface and a mounting surface correspondingly overlapped with the limiting boss, a mounting hole is formed in the mounting surface, and a limiting hole corresponding to the mounting hole is formed in the limiting boss.
The limiting hole is a U-shaped hole with an opening at one side, and the side edge of the limiting boss is provided with a limiting edge which extends upwards and protrudes.
And the edges of the supporting bottom surface and the mounting surface are provided with connecting edges which are bent so that the mounting seat is fixedly connected in the box body.
The second wedge block comprises a second wedge block upper section and a second wedge block lower section, the inner wall surface of the second wedge block lower section, facing one side of the electric core, is a vertical surface, and the outer wall surface is an inclined surface which is inclined to the outside gradually from bottom to top.
And a plurality of convex blocks are arranged on the outer side walls of the upper section of the second wedge block and the lower section of the second wedge block, and the convex blocks are strip-shaped convex blocks extending from one end of the second wedge block to the other end of the second wedge block.
The lower section of the second wedge block is of a hollow structure, and a reinforcing rib is arranged in the hollow structure.
The edge of the lower box body and the edge of the upper box cover are both provided with an extended connecting outer eaves, and the connecting outer eaves are provided with a plurality of connecting through holes.
Compared with the prior art, the invention has the following advantages: the invention relates to a non-modular battery pack structure.A single battery is directly stacked in a box body, and the battery is tightly pressed in the box body by a wedge block. The invention can effectively reduce the number of fasteners in the battery box, simplify the box body structure and the installation production process, realize large-scale production, reduce the types of accessories, greatly shorten the development period, meet the requirements of various vehicle types on electric quantity after a plurality of standard battery packs are connected in series, have good universality and have better application prospect.
Drawings
The contents of the drawings that accompany the present specification and in which reference numerals are briefly described as follows:
FIG. 1 is a schematic diagram of a non-modular battery pack according to the present invention;
FIG. 2 is a schematic structural diagram of the case of the present invention;
FIG. 3 is a schematic view of the wedge arrangement of the present invention;
FIG. 4 is a schematic view of a wedge attachment configuration;
FIG. 5 is a schematic view of a wedge attachment configuration;
FIG. 6 is a cross-sectional view of the first wedge;
FIG. 7 is a sectional view of the second wedge.
Labeled as: 1. the device comprises a box body, 11, a lower box body, 12, an upper box cover, 13, a mounting seat, 131, a mounting surface, 132, a mounting hole, 133, a supporting bottom surface, 14, an outer supporting beam, 15 and a connecting outer eave;
2. the wedge block comprises a wedge block 21, a first wedge block 211, a first wedge block upper section 212, a first wedge block lower section 213, a limiting boss 214, a limiting hole 22, a second wedge block 221, a second wedge block upper section 222, a second wedge block lower section 223 and a convex block;
3. and (5) battery cores.
Detailed Description
The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings.
The non-modular battery pack structure comprises a box body 1 and a battery core 3 arranged in the box body 1, as shown in fig. 1. As shown in fig. 2, the box body 1 includes a lower box body 11 and an upper box cover 12, the edges of the lower box body 11 and the upper box cover 12 are both provided with an extended connecting outer eaves 15, the connecting outer eaves 15 is provided with a plurality of connecting through holes, and the lower box body 11 and the upper box cover 12 are fastened and connected by bolts passing through the connecting through holes. As shown in fig. 3 and 4, a wedge 2 is disposed in a gap between the battery cell 2 and the case 1, the wedge 2 includes a first wedge 21 disposed at two ends of the case 1 and a second wedge 22 disposed at two sides of the case 1, and two ends of the case 1 are provided with mounting seats 13 for mounting and positioning the first wedge 21.
As shown in fig. 2, the outer supporting beams 14 are vertically arranged on the outer wall of the lower case 11 to reinforce the structural strength of the battery pack, and a plurality of outer supporting beams 14 are arranged at intervals along the circumference of the outer wall of the lower case 11. The outer supporting beams 14 are of a bent U-shaped groove structure, the cross sections of the outer supporting beams are U-shaped, and all the outer supporting beams 14 are subjected to punching and weight reduction treatment.
In the present invention, as shown in fig. 6, the first wedge 21 includes a first wedge upper section 211 and a first wedge lower section 212, an inner wall surface of the first wedge lower section 212 facing the electrical core 3 is a vertical surface, an outer wall surface is an inclined surface that is gradually inclined outward from bottom to top, and a transition connection between the first wedge lower section 212 and the first wedge upper section 211 is provided with a limit boss 213 connected to the mounting seat 13.
As shown in fig. 5, the mounting seat 13 includes a supporting bottom surface 133 and a mounting surface 131 corresponding to the overlapping mounting limit boss 213, the mounting surface 131 is provided with a mounting hole 132, and the limit boss 213 is provided with a limit hole 214 corresponding to the mounting hole 132. During the installation, hoist its electric core 3 to battery box 1 with the manipulator in, generally use 8 electric cores 3 as a set of, first voussoir 21 inserts battery front and back both sides, then uses second voussoir 22 to insert the both sides of electric core 3, uses the rubber hammer to press voussoir 2, compresses tightly electric core 3. The first wedge block is locked on the mounting seat 13 by using a fastening bolt, and the battery is fixed in the battery box body 1 after being pressed in the locking process. The wedging depth of the wedge block can be controlled according to the condition of the gap between the battery cell 3 and the edge of the box body.
The limiting hole 214 is a U-shaped hole with an opening at one side, and a limiting edge extending upwards is arranged at the side of the limiting boss. This structure is convenient for the counterpoint locking installation of first voussoir 21, prevents to rock the voussoir pine phenomenon that causes.
As shown in fig. 5, a bent connecting edge is provided at the edge of the support bottom surface 133 and the mounting surface 131 of the mounting base 13 so that the mounting base 13 is fixedly connected to the side wall of the case 1 by welding via the connecting edge. And a through groove is arranged on the vertical surface of the mounting seat 13, and the purpose of facilitating bolt tightening and fastening in the wedge block mounting process is achieved by the through groove.
As shown in fig. 7, the second wedge 22 includes a second wedge upper section 221 and a second wedge lower section 222, an inner wall surface of the second wedge lower section 222 facing the battery cell 3 is a vertical surface, and an outer wall surface is an inclined surface that is gradually inclined outward from bottom to top. The outer side walls of the second wedge upper section 221 and the second wedge lower section 222 are provided with a plurality of projections 223, the projections 223 are strip-shaped projections extending from one end of the second wedge 22 to the other end, and the projections 223 can further improve the fastening effect. The lower section of the second wedge block is of a hollow structure, and reinforcing ribs are arranged in the hollow structure, so that the structural strength of the second wedge block is guaranteed, the weight is reduced as far as possible, and the requirement for light weight is met. In order to facilitate production, processing, installation and use, the second wedge 22 can be divided into a plurality of sections according to the lengths of the battery cell 3 and the box body 1.
The upper sections of the first wedge block 21 and the second wedge block 22 are inserted into the upper box cover 12, and the lower sections of the first wedge block and the second wedge block are inserted into the lower box body 11, so that a good limiting effect is achieved, and the installation stability is high.
The invention discloses a non-modular battery pack structure which comprises a box body 1, a wedge block 2 and a battery core 3. The box body 1 comprises a lower box body 11 and an upper box cover 12, wherein the lower box body 11 is provided with a mounting seat 13 and an outer supporting beam 14 and is formed by spray welding. The lower case 11 and the upper case cover 12 are fastened and connected by bolts through the connection outer eaves 15. The battery 3 is hoisted into the box body, the first wedge blocks 21 are inserted into the front side and the rear side of the battery 3, then the second wedge blocks 22 are inserted into the two sides of the battery 3, the wedge blocks are compressed, the first wedge blocks 21 at the two ends are locked on the mounting base 13 by the fastening bolts, the second wedge blocks 22 are fastened by the convex blocks 223, and the battery is fixed in the battery box body after being pressed in the locking process.
The non-modular battery pack structure has compact integral pack structure and high energy density; the box body can be designed to be standardized and can be produced in a full-automatic mode, so that the production efficiency and the quality stability of the battery pack are improved; all spare and accessory parts are standardized and can be purchased intensively, so that the raw material cost of the product is reduced; the design is compact, and the packing, transportation and final assembly of a host factory can realize single-person operation; the battery pack has no module structure, the number and the types of the fasteners are small, and the operation efficiency and the product reliability are improved.
The modular battery pack-free battery pack structure has the advantages that the number of fasteners in the battery box can be effectively reduced, the box body structure and the mounting production process are simplified, the large-scale production is realized, the types of accessories are reduced, the development period is greatly shortened, the requirements of various types of batteries on electric quantity can be met after a plurality of standard battery packs are connected in series, the universality is good, and the application prospect is good.
The invention has been described above with reference to the accompanying drawings, but the invention is not limited to the above-described embodiments, and it is within the scope of the invention to use various insubstantial modifications of the inventive concept and solutions or to apply them directly to other applications.