CN215644850U

CN215644850U - Battery system box, battery system box assembly and battery system

Info

Publication number: CN215644850U
Application number: CN202121457468.5U
Authority: CN
Inventors: 张玉峰; 易凡
Original assignee: Vitesco Automotive Tianjin Co Ltd
Current assignee: Vitesco Automotive Tianjin Co Ltd
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2022-01-25
Anticipated expiration: 2031-06-29

Abstract

The utility model discloses a battery system box, which is used for accommodating a battery module and comprises: the device comprises a shell, wherein a group of opposite side walls of the shell are provided with corresponding vertical grooves; the pressure plate is inserted into the groove, and the inserted pressure plate and the side wall of the shell form an accommodating space for accommodating the battery module; the lower extreme of pressure plate is provided with connecting portion, and connecting portion are used for fixedly connecting pressure plate and casing bottom surface. The utility model also discloses a battery system box assembly which comprises the battery system box. Also discloses a battery system, which comprises the battery system box body assembly and a battery module. The utility model can realize the effects of improving the processing and assembling processes and reducing the product cost by changing the structure of the box body.

Description

Battery system box, battery system box assembly and battery system

Technical Field

The utility model relates to the field of battery installation, in particular to a battery system box body, a battery system box body assembly and a battery system.

Background

The installation of the common battery module in the battery system box at present mainly has the following two forms: one form is that all be provided with the pressure plate at battery module both ends, and the pressure plate extrudees battery module both ends, and the material of pressure plate is mostly the aluminum alloy. The pressure plates have two common fixing modes, one mode is shown in fig. 1, the lower ends of two existing pressure plates 20 ' are welded with a bottom cooling plate 40 ', meanwhile, two stretching plates 30 ' are respectively added on the other two sides of the battery module 10, and the two ends of the two stretching plates 30 ' are respectively welded with the existing pressure plates 20 ' on the two sides, so that pre-tightening force can be provided for the battery module 10. Another common way of fixing the pressure plate is shown in fig. 2, in which the bottom surface of the existing pressure plate 20 ' is welded to the bottom cooling plate 40 ', and the upper end of the existing pressure plate 20 ' is fixedly connected to the battery module case by fixing bolts. In the above-mentioned installation form of battery module, two kinds of fixed modes of pressure plate all can involve multichannel welding process, and the technology is complicated, and the technology cycle is long, consequently can make the product cost very high.

Another form of mounting the battery module is shown in fig. 3, in which a pressure plate and a housing are integrated together by a die casting process to form an existing housing 50 ', two partition plates 51 ' are relatively fixedly disposed in the existing housing 50 ', and when assembling, both ends of the battery module 10 are clamped by clamps and vertically inserted into an accommodating space formed by the two partition plates 51 ' and the side walls of the existing housing 50 '. Usually, a layer of blue film is arranged outside the battery module, the blue film has the effects of insulation, voltage resistance and the like, if the blue film damages the contact between the battery and the metal partition plate, short circuit may occur, and thermal runaway occurs after the short circuit, so that the battery core is scrapped. And above-mentioned installation form will insert the battery module between two baffles, and the precision requirement to the installation is very high, and the installation degree of difficulty is great, and the installation is easy to be to damaging the blue membrane of electric core, causes higher disability rate to lead to manufacturing cost to increase.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem of high production cost of the conventional battery system box body due to complex processing and mounting processes. The utility model provides a battery system box body which can improve the processing and assembling processes to reduce the production cost of products.

In order to solve the above technical problem, an embodiment of the present invention discloses a battery system box, where the battery system box is used for accommodating a battery module, and the battery system box includes:

the device comprises a shell, wherein a group of opposite side walls of the shell are provided with corresponding vertical grooves;

the pressure plate is inserted into the groove, and an accommodating space is formed between the inserted pressure plate and the side wall of the shell and used for accommodating the battery module; the lower extreme of pressure plate is provided with connecting portion, connecting portion are used for with the pressure plate with casing bottom surface fixed connection.

Adopt above-mentioned technical scheme, through set up the recess on the casing, the pressure plate is pegged graft with the recess and is cooperated, the recess is spacing to pressure plate horizontal direction and vertically, and carry out fixed connection through the connecting portion of pressure plate and casing bottom, carry out ascending spacing of vertical side to the pressure plate, and then fix the battery module in the accommodation space that pressure and casing lateral wall formed, assembly process is simple, it need not the multichannel welding to be mechanical connection, consequently, reduce the processing equipment demand, shorten processing cycle, reduction in production cost. And during the assembly, the battery module is attached to the pressure plate and then is installed in the shell, and the battery module, the shell and the pressure plate are not subjected to extrusion friction, so that the rejection rate can be reduced, and the production cost of the product is reduced.

Furthermore, the grooves which are oppositely arranged are used as one group, the grooves are provided with two groups, the two pressure plates are respectively spliced with the two groups of grooves, and an accommodating space is formed between the two pressure plates and the side wall of the shell which is provided with the grooves and used for accommodating the battery module.

Further, the pressure plate is made of galvanized steel.

Further, the side of the connecting portion protruding from the pressure plate is formed in a cantilever shape.

Further, the bottom of the shell is fixedly provided with an installation boss which is fixedly connected with the connecting part, and when the lower end face of the pressure plate is contacted with the bottom face of the shell, the connecting part is contacted with the installation boss.

Furthermore, the connecting part is formed by bending a partial area of the bottom end of the pressure plate outwards.

Correspondingly, the embodiment of the utility model also discloses a battery system box body assembly which comprises the battery system box body.

Correspondingly, the embodiment of the utility model also discloses a battery system which comprises the battery system box body assembly and a battery module.

Drawings

Fig. 1 is a schematic view illustrating a first conventional installation form of a battery module;

fig. 2 is a schematic view illustrating a second conventional installation form of a battery module;

fig. 3 is a schematic view illustrating an installation form of a third conventional battery module;

FIG. 4 is a schematic structural diagram of a battery system case according to the present application;

FIG. 5 is a schematic structural view of the housing of the present application;

FIG. 6 is a top view of the housing of the present application;

FIG. 7 is a schematic view of the construction of a pressure plate according to the present application;

FIG. 8 is a front view of the pressure plate construction of the present application;

fig. 9 is a reference view showing a first state when the battery system case of the present application is assembled;

fig. 10 is a reference view showing a second state when the battery system case of the present application is assembled;

fig. 11 is a reference view showing a third state when the battery system case of the present application is assembled;

in the figure, 10-cell module, 20 ' -existing pressure plate, 30 ' -tension plate, 40 ' -cooling plate, 50 ' -existing outer case, 51 ' -separator; 20-pressure plate, 21-connection, 22-notch; 50-shell, 51-shell, 52-groove, 53-boss.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure. While the utility model will be described in conjunction with the preferred embodiments, it is not intended that the features of the utility model be limited to these embodiments. On the contrary, the intention of the novel description to be incorporated into the embodiments is to cover alternatives or modifications which may be extended in accordance with the appended claims. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The utility model may be practiced without these particulars. Moreover, some of the specific details have been left out of the description in order to avoid obscuring or obscuring the focus of the present invention. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

It should be noted that in this specification, like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

In the description of the present embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally arranged when the products of the present invention are used, and are only used for convenience in describing and simplifying the description, but do not indicate or imply that the devices or elements indicated must have specific orientations, be constructed in specific orientations, and operated, and thus, should not be construed as limiting the present invention.

In the description of the present embodiment, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed," "connected," and "connected" are to be interpreted broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present embodiment can be understood in specific cases by those of ordinary skill in the art.

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

A battery system case, as shown in fig. 4, includes a case 50 and a pressure plate 20 disposed in the case 50.

The housing 50 includes a casing 51, the casing 51 is surrounded by four side walls and a bottom surface, a set of opposite side walls of the casing 51 are provided with corresponding vertical grooves 52, and the vertical direction is a direction extending from the upper end surfaces of the side walls to the bottom surfaces of the side walls and is perpendicular to the bottom surface of the casing 51. As shown in fig. 5 and 6, the two corresponding vertical grooves 52 are a group, the grooves 52 are vertically parallel to each other, the two grooves 52 are symmetrically disposed along the bisector plane between the two sidewalls, and the bottom of the groove 52 protrudes outward relative to the sidewalls of the housing 51.

The pressure plate 20 is inserted into the groove 52, and the inserted pressure plate 20 and the side wall of the shell 51 form an accommodating space for accommodating the battery module 10; the lower end of the pressure plate 20 is provided with a connecting portion 21, the connecting portion 21 is used for fixedly connecting the pressure plate 20 with the bottom surface of the housing 51, and the fixed connection mode can be screw connection.

This application passes through pressure plate 20 and recess 52 sliding fit, carry out horizontal direction and fore-and-aft spacing to pressure plate 20 through recess 52, recycle connecting portion 21 and casing 51 bottom surface fixed connection simultaneously, carry out ascending spacing in vertical side, consequently, fix pressure plate 20 at battery module 10 both ends, fix battery module 10 in shell 50, and exert certain pretightning force to battery module 10, whole installation uses mechanical connection as leading, simple process, and is with low costs.

Further, two sets of grooves 52 are provided, the two pressure plates 20 are respectively inserted into the two sets of grooves 52, and an accommodating space is formed between the two pressure plates 20 and the side wall of the housing 51 provided with the grooves 52 for accommodating the battery module 10. During installation, the two pressure plates 20 are respectively contacted with two end faces of the battery module 10, during installation, the two pressure plates 20 are respectively inserted into the two groups of grooves 52, then the pressure plates 20 are fixed with the bottom face of the shell 51 through the connecting parts 21, and after installation, the two pressure plates 20 can give a certain pretightening force to the battery module 10.

Further, the pressure plate 20 is made of galvanized steel, the galvanized steel has certain corrosion resistance and high strength, and can resist certain electric core expansion force, and meanwhile, the cost of the galvanized steel is more than two times lower than that of aluminum alloy with the same weight, so that the material cost of the box body can be reduced.

Further, the side of the connecting portion 21 protruding from the pressure plate 20 is formed in a cantilever shape, and the lower surface of the connecting portion 21 is located above the lower end surface of the pressure plate 20 in the vertical direction. Meanwhile, the bottom of the housing 51 is fixedly provided with a mounting boss 53 for fixedly connecting with the connecting portion 21, the position of the mounting boss 53 corresponds to the position of the connecting portion 21, after the pressure plate 20 is mounted in place, the lower end face of the pressure plate 20 is in contact with the bottom face of the housing 51, and the lower surface of the connecting portion 21 is in contact with the upper surface of the mounting boss 53. The connecting portion 21 is provided with a mounting through hole, the boss 53 is provided with a threaded mounting hole, and the mounting boss 53 and the connecting portion 21 can be fixedly connected through a screw or the like, so that the pressure plate 20 and the housing 51 can be fixedly connected. Because the bottom of the shell 51 has limited thickness, the connecting part 21 is arranged in a cantilever shape and has a certain distance with respect to the bottom surface of the shell 51, and meanwhile, the boss 53 is arranged on the bottom surface of the shell 51, which is equivalent to thickening the connecting part of the bottom surface of the shell 51 and is connected with the connecting part 21 by the boss 53, so that the problems that the bottom of the shell 51 has limited thickness and cannot be connected or is not firmly connected are solved, and the effect of firmly connecting the connecting part 21 with the shell 51 is realized.

As shown in fig. 7 and 8, the connecting portion 21 is formed by bending a partial region of the bottom end of the pressure plate 20 outward. Specifically, the lower end of the pressure plate 20 is provided with a notch 22, and the pressure plate 20 at the notch 22 is bent sideways to form the connecting portion 21.

In mounting, as shown in fig. 9 to 11, the pressure plates 20 are pressed against both ends of the battery module 10, then the battery module 10 and the pressure plates 20 are integrally moved in the vertical direction toward the bottom of the case 51, the pressure plates 20 at both ends are inserted into the corresponding recesses 52 until the bottom of the pressure plate 20 contacts the bottom of the case 51, the connecting portions 21 contact the mounting bosses 53, and the connecting portions 21 are fastened to the mounting bosses 53 by bolts.

Compared with the prior art, the technical scheme has the advantages that the processing and assembling process is simple, the equipment requirement can be reduced, the process period can be shortened, the rejection rate can be reduced, and the technical effect of reducing the product cost can be realized. The specific statement is as follows:

in the first prior art mounting configuration shown in fig. 1, the prior art pressure plate 20 'and the tension plate 30' and the prior art pressure plate 20 'and the cooling plate 40' are all welded together, and multiple welds are required for mounting. As shown in fig. 2, in the second conventional installation form, the conventional pressure plate 20 'and the cooling plate 40' are also connected by welding, multiple welding is also required during installation, special laser welding equipment is required for welding, the equipment investment cost is high, multiple welding is required, and the processing cycle is long. And this application mounting panel and battery module's fixed mode mainly uses mechanical connection as leading, and pressure plate 20 is pegged graft with recess 52 back, bolted connection can, need not additionally to be equipped with welding production facility, and need not the multiple welding process, shortens assembly process cycle, greatly reduced manufacturing cost.

As shown in fig. 3, in the third conventional installation form, two partition plates 51 'are disposed inside the conventional outer housing 50', and a space formed by the two partition plates 51 'and the side walls of the conventional outer housing 50' is an accommodating space of the battery module, and when the battery module 10 is pressed into the accommodating space, the partition plates 51 'and the side walls of the conventional outer housing 50' easily damage the outer film of the battery module 10, resulting in a high rejection rate of the battery module. In the application, the pressure plate 20 is pressed at two ends of the battery module 10, and the pressure plate and the battery module are inserted into the groove 52 together, so that scrapping of the battery module due to friction between the battery module and the pressure plate is avoided, the scrapping rate in the installation process is reduced, the qualified rate of production products is improved, and the effect of reducing the overall product cost is realized.

In conclusion, the battery system box body is connected with the groove 52 in an inserting mode through the movable pressure plate 20, then the pressure plate 20 and the shell 51 are fixed through mechanical connection, certain pre-tightening force is provided for the battery module 10 after installation, machining and installation processes are simple, the effect of reducing production cost of products can be achieved, and meanwhile the pressure plate 20 is made of galvanized steel, so that product cost can be further reduced.

The application also discloses battery system box assembly, including foretell battery system box to and go up parts such as casing, plug connector, breather valve and PCB BUSBAR pencil.

The application also discloses a battery system, including above-mentioned battery system box assembly, battery module and Battery Management System (BMS).

While the utility model has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a more detailed description of the utility model, taken in conjunction with the specific embodiments thereof, and that no limitation of the utility model is intended thereby. Various changes in form and detail, including simple deductions or substitutions, may be made by those skilled in the art without departing from the spirit and scope of the utility model.

Claims

1. A battery system box, the battery system box is used for settling battery module, its characterized in that, battery system box includes:

2. The battery system box according to claim 1, wherein the grooves are formed in two sets, two pressure plates are respectively inserted into the two sets of grooves, and a receiving space is formed between the two pressure plates and the side wall of the housing where the grooves are formed, for receiving the battery module.

3. The battery system case of claim 1 or 2, wherein the pressure plate is made of galvanized steel.

4. The battery system case according to claim 1, wherein a side of the connecting portion protruding from the pressure plate is formed in a cantilever shape.

5. The battery system case according to claim 4, wherein a mounting boss for fixedly connecting with the connecting portion is fixedly provided at the bottom of the case, and the connecting portion contacts with the mounting boss when the lower end surface of the pressure plate contacts with the bottom surface of the case.

6. The battery system case according to claim 1, wherein the connecting portion is formed by bending a part of a bottom end of the pressure plate outward.

7. A battery system case assembly comprising a battery system case according to any one of claims 1 to 6.

8. A battery system comprising the battery system case assembly according to claim 7 and a battery module.