CN220914444U

CN220914444U - Square shell type lithium battery module tightening device

Info

Publication number: CN220914444U
Application number: CN202322587506.4U
Authority: CN
Inventors: 蒋金国
Original assignee: Suzhou New Power Energy Co ltd
Current assignee: Suzhou New Power Energy Co ltd
Priority date: 2023-09-22
Filing date: 2023-09-22
Publication date: 2024-05-07
Anticipated expiration: 2033-09-22

Abstract

The utility model relates to a square shell type lithium battery module tightening device, which comprises a main frame and a baffle, wherein the main frame comprises a front end plate and side plates connected with two ends of the front end plate, the battery module is arranged in a space defined by the side plates and the front end plate, one end, far away from the front end, of each side plate is provided with a plurality of turnover inserting strips, each inserting strip is provided with a first limiting hole, the baffle comprises a main plate and extending plates vertically connected with two sides of the main plate, the rear end of the main plate is attached to the battery module, the joint of the main plate and the extending plates is provided with through holes corresponding to the inserting strips, the extending plates are provided with second limiting holes, the positions of the side plates corresponding to the second limiting holes are provided with screws, the main frame and the baffle are attached to the outer sides of the side plates in a turnover state, and the first limiting holes are also arranged corresponding to the screws; the main frame and the baffle plate simultaneously realize the fixation of the two sides and the front and the back of the lithium battery module; the structure is simpler, and the fixed connection is convenient.

Description

Square shell type lithium battery module tightening device

Technical Field

The utility model relates to a lithium battery, in particular to a square shell type lithium battery module tightening device.

Background

The lithium battery module of square shell type can outwards bulge along with the increase of the cycle number of charging and discharging, in case bulge lithium battery module structural deformation, life just can drop, even lithium battery module function is inefficacy, so can set up special structure when using, avoid its bulge, so current square shell type lithium battery module can use two piece at least steel belts to fasten at length direction, then set up the steel sheet at both sides, both ends set up the metal sheet around simultaneously, the steel sheet passes through the screw connection at the metal sheet, just so fix in X axis direction and Y axis direction, because the module can be placed at open battery casing when using, the module bottom surface contacts battery casing, the up end sets up the layering, the layering both ends set up the screw hole, then also be provided with the screw hole on the battery casing or the surface, then fix it through the screw, make the module fix in the battery casing, and then also fixed at Z axis direction, so avoid the bulge, need set up the steel band, the metal sheet, steel sheet and mounting, not only loaded down with trivial details and cause the battery to occupy the problem of stability when assembling, still limit the inside space of the battery.

Disclosure of utility model

The utility model aims to provide a square shell type lithium battery module tightening device, which solves the problems that the existing square shell type lithium battery module is not tightly assembled in a shell and further causes the expansion of a battery core, and the square shell type lithium battery module tightening device is complex in design and high in material cost and assembly time.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

The utility model provides a square shell type lithium battery module tightening device which comprises a main frame and a baffle, wherein the main frame comprises a front end plate and side plates connected to two ends of the front end plate, a battery module is arranged in a space defined by the side plates and the front end plate, the front end plate and the side plates are attached to the front end and the side walls of the battery module, one end, far away from the front end, of each side plate is provided with a plurality of turnover inserting strips, each inserting strip is provided with a first limiting hole, the baffle comprises a main plate and extending plates vertically connected to two sides of the main plate, the main plate is attached to the rear end of the battery module, through holes corresponding to the inserting strips are formed in the joint of the main plate and the extending plates, second limiting holes are formed in the extending plates, screws are arranged at positions, corresponding to the second limiting holes, of the main frame and the baffle are attached to the outer sides of the side plates in a connection state, and the inserting strips are in a turnover state, and the first limiting holes are also correspondingly arranged by screws.

Preferably, the bottom of the side plate is provided with a connecting bar extending outwards, the connecting bar is provided with a first connecting hole and a second connecting hole, and the first connecting hole is connected with the bottom plate of the battery module control system through a screw.

Preferably, the side link, middle part are provided with the middle part link in the box inner chamber of lithium cell module, all be provided with the third connecting hole on side link and the middle part link, third connecting hole and second connecting hole pass through screw connection.

Preferably, the length of the straight line of the middle connecting frame away from the side connecting frame is matched with the length of the lithium battery module, and two groups of third connecting holes are formed in the middle connecting frame.

Preferably, a limit strip is connected between the top ends of the side plates on two sides.

Preferably, the second limiting hole is in an open hole structure.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

According to the square shell type lithium battery module tightening device, the main frame limits two sides and the front end of the battery module, the baffle is arranged at the rear end of the battery module, the inserting strip of the main frame is inserted into the through hole of the baffle, then the inserting strip is turned over, the inserting strip is turned over to the screw in the second limiting hole, then the nut is screwed on the screw to connect the main frame with the baffle, and meanwhile the two sides and the front and rear of the lithium battery module are fixed; the structure is simpler, and the fixed connection is convenient.

The fixing in the up-down direction and the connection of the control assembly are realized through the connecting frame, and the connection with the box body is realized without setting an extra structure.

Drawings

Some specific embodiments of the utility model will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

FIG. 2 is a schematic view of the structure of the case according to the embodiment of the present utility model;

FIG. 3 is a schematic view of the structure of the main frame and the baffle plate when the box body is removed according to the embodiment of the utility model;

FIG. 4 is a schematic view of the structure of a main frame according to an embodiment of the present utility model;

Fig. 5 is a schematic structural view of a baffle according to an embodiment of the present utility model.

Wherein reference numerals are as follows:

1. A main frame; 11. a front end plate; 12. a side plate; 13. a limit bar;

2. a connecting strip; 21. a first connection hole; 22. a second connection hole; 23. inserting a strip; 24. a first limiting hole;

3. a baffle; 31. a main board; 32. an extension plate; 33. a second limiting hole; 34. a screw;

4. A case; 41. a side connecting frame; 42. a middle connecting frame; 43. a third connection hole;

5. and controlling the assembly base plate.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present embodiment, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are directions or positional relationships based on the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present utility model. In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

As shown in fig. 1 and 3, the square-shell lithium battery module in this example is placed in the battery cases 4, two battery modules are placed in each battery case 4, wherein the tightening device comprises a main frame 1 and a baffle 3, the main frame 1 comprises a front end plate 11 and side plates 12 connected to two ends of the front end plate 11, the battery modules are arranged in spaces defined by the side plates 12 and the front end plate 11, the front end plate 11 and the side plates 12 are attached to the front ends and the side walls of the battery modules, the side plates 12 on two sides limit the battery modules in the X direction, and a limit bar 13 is connected between the top ends of the side plates 12 on two sides, which is used for limiting the positions of the side plates 12 on two sides, and can further support the battery modules on the other hand. Baffle 3 includes mainboard 31 and connects the extension board 32 in the mainboard 31 both sides perpendicularly, and the distance between the extension board of both sides 32 is greater than the distance between the curb plate of both sides 12, and the rear end setting of mainboard 31 laminating battery module, then is connected baffle 3 and main frame 1 just can realize the spacing of Y direction.

As shown in fig. 4 and 5, a plurality of foldable inserting strips 23 are arranged at one end, far away from the front end, of the side plate 12, a first limiting hole 24 is formed in the inserting strip 23, the first limiting hole 24 is a kidney-shaped hole, a through hole corresponding to the inserting strip 23 is formed in the joint of the main plate 31 and the extending plate 32, the extending plate 32 is attached to the outer side of the side plate 12, a second limiting hole 33 is formed in the extending plate 32, the second limiting hole 33 is an open hole, the second limiting hole 33 is formed in the baffle 3 to assist in positioning, a screw 34 is arranged at the position, corresponding to the second limiting hole 33, of the side plate 12, in the state that the main frame 1 and the baffle 3 are connected, the extending plate 32 is attached to the outer side plates 12 on the two sides, then the inserting strip 23 is folded to be attached to the extending plate 32, the first limiting hole 24 is also arranged corresponding to the screw 34 after folding, and nuts are screwed on the screw 34 to limit the first limiting hole 24 and the second limiting hole 33, and the connection of the main frame 1 and the baffle 3 can be achieved.

The curb plate 12 top of both sides all is provided with connecting strip 2 that extend to the outside, is provided with first connecting hole 21 and second connecting hole 22 on the connecting strip 2, and control system's bottom plate sets up at lithium battery module's top, and first connecting hole 21 passes through screw 34 with battery module control system bottom plate to be connected, and connecting strip 2 all is connected with control system's bottom plate on two battery modules, realizes control system's fixed jointly.

As shown in fig. 2, two sides are provided with side connecting frames 41 in the inner cavity of the box body 4 of the lithium battery module, the middle part is provided with middle connecting frames 42, the middle connecting frames 42 can be provided with a plurality of middle connecting frames, when a plurality of middle connecting frames are arranged, the distance between the adjacent middle connecting frames 42 and the straight line length between the middle connecting frames 42 and the middle side connecting frames 41 are matched with the length of the lithium battery module, thus the battery module is arranged between two middle connecting frames or between the middle connecting frames 42 and the connecting frames of the side plates 12, in this example, only one middle connecting frame 42 is provided, wherein the side connecting frames 41 and the middle connecting frames 42 are provided with third connecting holes 43, the middle connecting frames 42 are provided with two groups of third connecting holes 43 for connecting the battery modules on two sides, the third connecting holes 43 and the second connecting holes 22 are connected through screws 34, and the fixing of the lithium battery module relative to the box body 4 is realized through the connection between the third connecting holes 43, the second connecting holes 22 and the screws 34, and the limiting strips 13 are limited and tightly bound in the Z direction.

The cross sections of the middle connecting frame 42 and the side connecting frames 41 are in a shape like a Chinese character 'ji', and a plurality of round holes are formed in the side plates 12 of the corresponding side battery modules for heat dissipation and weight reduction of the case 4.

When the connecting device is specifically used, the main frame 1 and the baffle 3 are correspondingly connected and fixed, then the main frame and the baffle 3 are placed at corresponding positions of the box body 4, so that the main frame and the connecting frame are correctly connected, and after connection, the control assembly bottom plate 5 is placed on the connecting strip 2 for connection, so that multidirectional fixing and connection are realized.

The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the present utility model and to implement the same, but are not intended to limit the scope of the present utility model, and all equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.

Claims

1. The utility model provides a square shell type lithium battery module tightening device, its characterized in that, includes main frame and baffle, the main frame includes the front end plate and connects the curb plate at the front end plate both ends, battery module establishes in the space that curb plate and front end plate inject, front end plate and curb plate laminating battery module's front end and lateral wall set up, the one end that keeps away from the front end of curb plate is provided with a plurality of inserts strip that can turn over, be provided with first spacing hole on the inserts strip, the baffle includes the mainboard and connects the extension board in the mainboard both sides perpendicularly, the rear end setting of mainboard laminating battery module, mainboard and extension board junction is provided with the through-hole that corresponds inserts strip, the second spacing hole has been seted up to the extension board, the position that the curb plate corresponds the second spacing hole is provided with the screw, under main frame and the baffle be connected state, the extension board laminating is in the outside of curb plate insert strip be the state the first spacing hole corresponds the screw setting equally.

2. The square-case lithium battery module tightening device according to claim 1, wherein: the top of the side plate is provided with a connecting strip extending outwards, the connecting strip is provided with a first connecting hole and a second connecting hole, and the first connecting hole is connected with a bottom plate of the battery module control system through a screw.

3. The square-case lithium battery module tightening device according to claim 1, wherein: the lithium battery module comprises a lithium battery module body, wherein a side connecting frame is arranged on two sides in an inner cavity of the lithium battery module body, a middle connecting frame is arranged in the middle of the lithium battery module body, third connecting holes are formed in the side connecting frame and the middle connecting frame, and the third connecting holes are connected with the second connecting holes through screws.

4. A square-case lithium battery module tightening device according to claim 3, wherein: the length of the straight line of the middle connecting frame away from the side connecting frame is matched with the length of the lithium battery module, and two groups of third connecting holes are formed in the middle connecting frame.

5. The square-case lithium battery module tightening device according to claim 1, wherein: a limit strip is connected between the top ends of the side plates at two sides.

6. The square-case lithium battery module tightening device according to claim 1, wherein: the second limiting holes are of an open hole structure.