CN220456546U

CN220456546U - Power battery Pack system

Info

Publication number: CN220456546U
Application number: CN202321239578.3U
Authority: CN
Inventors: 梁新龙; 吴宝; 方有为; 韦鹏
Original assignee: Hefei Guoxuan High Tech Power Energy Co Ltd
Current assignee: Hefei Gotion High Tech Power Energy Co Ltd
Priority date: 2023-05-22
Filing date: 2023-05-22
Publication date: 2024-02-06
Anticipated expiration: 2033-05-22

Abstract

The utility model discloses a power battery Pack system, which comprises: the box body comprises a bottom plate, a limiting piece is arranged on the bottom plate, the bottom plate is divided into at least two mounting grooves by the limiting piece, and a first screw hole is formed in the limiting piece; at least two single battery modules, each of which is installed in one of the installation grooves; the end plate is arranged at the end part of the single battery module, a second screw hole is formed in the end plate, the second screw hole is opposite to the first screw hole, and a bolt is in threaded connection with the first screw hole and the second screw hole and used for fixing the end plate on the limiting piece. According to the utility model, a certain gap is formed between the single battery modules by arranging the limiting piece, so that the heat dissipation performance is improved, and the battery modules are more stably and conveniently fixed in the box body by arranging the end plate which is matched with the first screw hole of the limiting piece and provided with the second screw hole.

Description

Power battery Pack system

Technical Field

The utility model relates to the field, in particular to a power battery Pack system.

Background

The research of the key part technology of the electric automobile is mature, the industrialization degree is increased, some research institutions and automobile companies perform beneficial exploration on the aspect of automobile structures, but the research on battery grouping is still insufficient, and the research is mainly expressed in the aspects of energy density, battery consistency, thermal management performance and the like after grouping.

The existing power battery module PACK is large in size, heavy in weight and poor in sealing effect, electric components are not centralized and reasonable enough in arrangement inside the battery PACK, wiring arrangement of the internal battery cells is influenced to influence the packaging volume of the battery PACK, the battery cell group is wrapped layer by layer, the battery cell is assembled in a closed mode, and the internal temperature is not easy to transfer out to influence the performance and service life of the battery cell to a certain extent.

Therefore, a battery Pack system of a battery module is required to be designed, which can meet the requirements of reasonable layout and stable and firm assembly, and has certain heat dissipation.

Disclosure of Invention

In order to solve the technical problems in the background technology, the utility model provides a power battery Pack system.

The utility model provides a power battery Pack system, which comprises:

the box body comprises a bottom plate, wherein a limiting piece is arranged on the bottom plate and divides the bottom plate into at least two mounting grooves, a first screw hole is formed in the limiting piece, and the limiting piece can be a baffle or a limiting strip;

each single battery module is installed in one installation groove;

the end plate is arranged at the end part of the single battery module, the end plate is provided with the second screw hole, the second screw hole is opposite to the first screw hole, and the second screw hole is in threaded connection with the first screw hole and used for fixing the end plate on the limiting part.

Preferably, the mounting groove is provided with at least two rows and two columns, the side faces of each row of adjacent two single battery modules are oppositely arranged in the mounting groove, and the end faces of each column of adjacent two single battery modules are oppositely arranged in the mounting groove.

Preferably, the battery pack further comprises a pressing bar, wherein the pressing bar is arranged between every two adjacent single battery modules and abuts against the side surfaces of the two single battery modules.

Preferably, the layering extends to the terminal surface in monomer battery module outside, and open at the both ends of layering has first through-hole, and first through-hole is relative with the second screw, the bolt pass first through-hole and with first screw and second screw threaded connection to fix the layering on the end plate in the outside of two monomer battery modules.

Preferably, the fixing device further comprises a fixing piece, the fixing piece is arranged on the inner side end plate of each two groups of single battery modules with opposite end faces, the side faces of the two groups of single battery modules with opposite end faces are opposite, and the fixing piece can be a sheet metal part in a shape like a Chinese character 'ji' or a fixing plate.

Preferably, the fixing piece is provided with four second through holes, the second through holes are opposite to the second screw holes, and the bolts penetrate through the second through holes and are in threaded connection with the first screw holes and the second screw holes, so that the fixing piece is mounted on the end plates on the inner sides of the adjacent four single battery modules.

Preferably, a third through hole is formed in the middle of the pressing bar, a fourth through hole is formed in the middle of the fixing piece, the third through hole is opposite to the fourth through hole, and the third through hole and the fourth through hole can be fixed through bolts.

Preferably, the lifting lug is further arranged on the box body, and is convenient to hoist the box body.

Preferably, the box cover is mounted on the box body for sealing the box body.

Preferably, the end plate is provided with a heat dissipation hole, so that heat dissipation of the battery is facilitated.

Preferably, the battery pack further comprises a packing belt, and the end plate and the single battery module are connected together through the packing belt.

Preferably, the box body is provided with a third screw hole, the box cover is provided with a fourth screw hole, and the third screw hole is opposite to the fourth screw hole.

Preferably, the box further comprises a placement area, wherein the placement area is arranged on the bottom surface of the box body and is used for placing the electric components.

In the utility model, the proposed power battery Pack system has the following beneficial effects:

the limiting plates are arranged to enable a certain gap to be reserved between the single battery modules, so that the heat dissipation performance is improved, and the battery modules are more stably and conveniently fixed in the box body through arranging the end plates which are matched with the first screw holes of the limiting pieces and are provided with the second screw holes;

the single battery module is fixed by arranging the pressing strips and the fixing pieces, and the pressing strips, the fixing pieces and the box body are fixed into a whole, so that the single battery module is prevented from shaking, and the Pack system is more stable.

Drawings

Fig. 1 is a schematic diagram of a power battery Pack system with a cover removed;

FIG. 2 is an enlarged view of a portion of FIG. 1A;

FIG. 3 is an enlarged view of a portion of B in FIG. 1;

fig. 4 is a schematic structural view of a battery module according to the present utility model;

FIG. 5 is an enlarged view of a portion of C in FIG. 4;

FIG. 6 is an enlarged view of part of D in FIG. 4;

fig. 7 is a schematic structural diagram of a battery case according to the present utility model;

fig. 8 is a schematic structural diagram of a power battery Pack system according to the present 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 symbols indicate like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.

It is to be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counter-clockwise," "axial," "radial," "circumferential," and the like are directional or positional relationships as indicated based on the drawings, merely to facilitate describing the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the utility model.

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" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In order to better understand the above technical scheme, the following detailed description of the technical scheme of the present utility model will be given with reference to the accompanying drawings of the specification and the specific embodiments.

Referring to fig. 1 to 8, a power battery Pack system according to the present utility model includes a case 1, a battery module 22 and a case cover 3, the battery module 22 is installed in the case 1, and the case cover 3 is installed on the case 1 and is used for sealing the case 1;

the box body 1 comprises a bottom plate and side plates 12, wherein the side plates 12 are vertically arranged on the edge of the bottom plate, a transverse plate 15, a vertical plate 16 and a partition plate 17 are also vertically arranged on the bottom plate, the vertical plate 16 and the partition plate 17 are perpendicular to the transverse plate 15, two placing areas 14 with the same size are formed among the partition plate 17, the transverse plate 15 and the side plates 12, the placing areas 14 are used for placing electric components, four battery module mounting areas with the same size are formed among the partition plate 17, the vertical plate 16, the transverse plate 15 and the side plates 12, a limiting strip 18 is arranged in the battery module mounting areas and divides each battery module mounting area into three mounting grooves 11 with the same size, two rows of six rows of mounting grooves 11 are further formed, the mounting grooves 11 are used for placing single battery modules 22, the limiting strip 18 is used for presetting gaps among the single battery modules 22, the single battery modules 22 are prevented from being tightly attached and difficult to dissipate heat, and a plurality of first screw holes 181 are formed in the limiting strip 18;

the unit cell modules 22 are twelve, each unit cell module 22 is installed in one installation groove 11, the unit cell module further comprises end plates 21 and PET packing belts 23, the PET packing belts 23 pack the unit cell modules 22 and fix the end plates 21 on the end faces of the unit cell modules 22, the end plates 21 are installed on the two end faces of each unit cell module 22, the end plates 21 are provided with radiating holes 212 so as to facilitate the heat radiation of the unit cell modules 22, each end plate 21 is provided with two second screw holes, the two second screw holes are respectively located at two ends of the end plate 21, each second screw hole is opposite to one first screw hole 181, the bolts 211 are in threaded connection with the first screw holes 181, and the end plates 21 are fixed on the box body 1.

Specifically, still include lug 13, lug 13 demountable installation is on the curb plate 12 of box 1, and lug 13 is used for conveniently hoisting box 1.

Specifically, the side plate 12 is provided with a plurality of screw holes, the case cover 3 is also provided with a plurality of screw holes, the screw holes on the side plate 12 are opposite to the screw holes on the case cover 3, and the case cover 3 is fixedly mounted on the case body 1 through the screw holes by the bolts 211.

Further, still include layering 22, layering 22 installs between every two rows of unit cell modules 22 that are adjacent and the side is relative, layering 22 and unit cell module 22's side conflict, layering 22's both ends extend to unit cell module 22's outside end plate 21 and be L type downwarping, layering 22 is used for making prevent that unit cell module 22 rocks and guarantee to exist the clearance between unit cell module 22's the side and thereby improve the thermal diffusivity, layering 22's both ends all open two first through-hole, layering 22 each end two first through-hole respectively with adjacent unit cell module 2 outside end plate 21's second screw is relative, bolt 211 passes first through-hole and with first screw 181 and second screw threaded connection to fix layering 22, outside end plate 21 and box 1 together, thereby improve Pack system's stability.

Further, the battery Pack comprises a plurality of metal sheet parts 24, wherein two opposite-side single battery modules 2 are arranged in a group, the metal sheet parts 24 are arranged on the inner side end plates 21 of the single battery modules 22 with opposite end surfaces, the opposite side surfaces of the two groups of single battery modules 22 are opposite, two through holes are formed in two ends of each metal sheet part 24, each second through hole is opposite to the second screw hole in the inner side end plate 21 of the different single battery modules 22, and bolts 211 penetrate through the second through holes and are in threaded connection with the first screw holes 181 and the second screw holes, so that the metal sheet parts 24, the inner side end plates 21 and the box body 1 are fixed together to prevent the single battery modules 22 from shaking, and stability of a Pack system is improved.

Further, the middle part of the pressing bar 22 is provided with a third through hole 221, the middle part of the metal sheet 24 is provided with a fourth through hole 241, the third through hole 221 is opposite to the fourth through hole 241, and a worker can pass through the third through hole 221 and the fourth through hole 241 by using a screw and fix the pressing bar 22 and the metal sheet 24 by matching nuts and the screw, so that the stability of a Pack system is further improved.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. A power cell Pack system, comprising:

the box body (1), the box body (1) comprises a bottom plate, a limiting piece (18) is arranged on the bottom plate, the limiting piece (18) divides the bottom plate into at least two mounting grooves (11), and a first screw hole (181) is formed in the limiting piece (18);

at least two single battery modules (2), wherein each single battery module (2) is arranged in one mounting groove (11);

the end plate (21), end plate (21) are installed in the tip of monomer battery module (2), have the second screw on end plate (21), second screw is relative with first screw (181), have bolt (211) and first screw (181) second screw threaded connection and fix end plate (21) on locating part (18).

2. The power battery Pack system according to claim 1, wherein at least two rows of two columns of mounting grooves (11) are provided, the side faces of two adjacent single battery modules (2) in each row are opposite, and the end faces of two adjacent single battery modules (2) in each row are opposite.

3. The power battery Pack system according to claim 2, further comprising a bead (22), wherein the bead (22) is installed between every two adjacent rows of unit battery modules (2) and abuts against the sides of the two rows of unit battery modules (2).

4. A power battery Pack system according to claim 3, wherein the batten (22) extends towards the end plate (21) at the outer side of the single battery modules (2), the two ends of the batten (22) are provided with first through holes, the first through holes are opposite to the second screw holes, and bolts (211) penetrate through the first through holes and are connected with the first screw holes (181) and the threads, so that the batten (22) is fixed on the end plate (21) at the outer sides of the two single battery modules (2).

5. The power battery Pack system according to claim 4, further comprising a fixing member (24), wherein the two unit battery modules (2) are arranged in a group, and the fixing member (24) is mounted on the inner end plates (21) of the two groups of unit battery modules (2) with opposite end surfaces.

6. The power battery Pack system according to claim 5, wherein the fixing member (24) is provided with four second through holes, the second through holes are opposite to the second screw holes, and bolts (211) penetrate through the second through holes and are in threaded connection with the first screw holes (181) and the second screw holes, so that the fixing member (24) is mounted on the end plate (21) on the inner side of the adjacent four single battery modules (2).

7. The power battery Pack system according to claim 4, wherein a third through hole (221) is formed in the middle of the pressing bar (22), a fourth through hole (241) is formed in the middle of the fixing member (24), and the third through hole (221) is opposite to the fourth through hole (241).

8. The power battery Pack system according to claim 1, further comprising a lifting lug (13), the lifting lug (13) being mounted on the case (1).

9. The power cell Pack system according to claim 1, further comprising a cover (3), the cover (3) being mounted on the case (1) for sealing the case (1).