CN215731994U

CN215731994U - Square electricity core module positioning structure

Info

Publication number: CN215731994U
Application number: CN202121958657.0U
Authority: CN
Inventors: 孙宗闽; 吴国庆
Original assignee: Fujian Yunzhong Power Technology Co ltd
Current assignee: Fujian Yunzhong Power Technology Co ltd
Priority date: 2021-08-19
Filing date: 2021-08-19
Publication date: 2022-02-01
Anticipated expiration: 2031-08-19

Abstract

The utility model relates to a square battery cell module assembling and positioning structure, which comprises: the battery cell lower support is provided with a lower mounting hole matched with the lower part of the square battery cell; an upper mounting hole matched with the upper part of the square battery cell is formed in the battery cell upper support, and the upper mounting hole is matched with the lower mounting hole to form an assembling hole for assembling the square battery cell; the battery cell upper bracket is provided with a first mounting groove for mounting a battery cell serial copper bar, and the first mounting groove is communicated with the upper mounting hole; the battery cell upper bracket is provided with a second mounting groove for mounting a battery cell output copper bar, the second mounting groove is communicated with the upper mounting hole, and the battery cell output copper bar conveniently located in the second mounting groove is electrically connected with the square battery cell. The utility model has simple and reliable structure, firm fixation and good anti-seismic performance; the load current output is large.

Description

Square electricity core module positioning structure

Technical Field

The utility model relates to the field of storage battery energy, in particular to an assembling and positioning structure of a square battery cell module.

Background

Along with the development of new energy equipment such as electric vehicles, logistics robots and electric ships, the lithium batteries are more and more widely used, and most of the lithium batteries in the existing market are assembled and used by cylindrical batteries represented by 18650; for square cells, less is used.

Currently, the lithium battery cell used in the common consumer electronic product generally has three specifications. The first scheme with the widest application range is that a cylindrical steel shell battery cell represented by 18650 is subjected to multistage series-parallel connection, and the steel shell battery cell is high in strength, large in pressure bearing and high in safety and is widely applied to power battery packs. The second type is mainly a soft-packaged polymer battery cell, and is commonly used for handheld consumer electronics products with small number of battery cells, such as mobile phones, charge pads and the like, due to the advantages and disadvantages of light weight, small volume, high discharge rate, easy stress damage and the like. And thirdly, the square battery mainly comprising an aluminum shell has the advantages of slightly higher strength, large capacity and regular shape, and is commonly used for energy storage products.

Because square electric core intensity is inferior than cylindrical electric core, works under heavy current load, and square middle part is heated the bulging deformation easily, and anti-seismic performance is also unlike cylindrical electric core, consequently it is often used for the energy storage product of static operating mode, on the power battery product of vibration operating mode very little.

SUMMERY OF THE UTILITY MODEL

First, technical problem to be solved

In order to solve the problems in the prior art, the utility model provides an assembling and positioning structure of a square battery cell module, which is simple and reliable in structure, firm in fixation and good in anti-seismic performance.

Second, technical scheme

In order to achieve the purpose, the utility model adopts the main technical scheme that:

the utility model provides a square electric core module positioning structure, it includes: the battery cell lower support is provided with a lower mounting hole matched with the lower part of the square battery cell; an upper mounting hole matched with the upper part of the square battery cell is formed in the battery cell upper support, and the upper mounting hole is matched with the lower mounting hole to form an assembling hole for assembling the square battery cell; the battery cell upper bracket is provided with a first mounting groove for mounting a battery cell serial copper bar, and the first mounting groove is communicated with the upper mounting hole;

the battery cell upper bracket is provided with a second mounting groove for mounting a battery cell output copper bar, the second mounting groove is communicated with the upper mounting hole, and the battery cell output copper bar conveniently located in the second mounting groove is electrically connected with the square battery cell.

Furthermore, positioning ribs are respectively arranged in the first mounting groove and the second mounting groove, and positioning grooves corresponding to the positioning ribs are respectively arranged on the battery cell serial copper bar and the battery cell output copper bar.

Further, electric core output copper bar includes the copper bar board, be equipped with the welding groove on the copper bar board, be connected with output terminal on the welding groove, be formed with the internal thread on the output terminal.

Furthermore, an annular sealing ring groove is formed in the outer wall of the output terminal, and a sealing ring is connected in the annular sealing ring groove.

Furthermore, an upper support locking stud is connected to the upper battery cell support through a module fixing stud, a lower support locking stud matched with the upper support locking stud is connected to the lower battery cell support, and when the upper battery cell support is connected with the lower battery cell support, the upper support locking stud is connected with the lower support locking stud and locked by a screw; the module is fixed and is used for fastening the battery cell module in the bottom shell.

Furthermore, a flexible shock absorption gasket with gum is arranged in the lower mounting hole.

Furthermore, a third mounting groove for mounting a temperature switch is formed in the battery cell upper support.

Further, the battery cell series copper bar is punched to form a cross section in a shape like a Chinese character 'ji'.

Third, beneficial effect

The utility model has the beneficial effects that: the structure is simple and reliable, the fixation is firm, and the anti-seismic performance is good; the load current output is large.

Drawings

FIG. 1 is a schematic structural diagram of one embodiment of the present invention;

FIG. 2 is an exploded view of one embodiment of the present invention;

fig. 3 is a schematic diagram of a structure of a cell output copper bar according to an embodiment of the present invention;

fig. 4 is a cross-sectional view of a structure of a cell output copper bar according to an embodiment of the present invention.

Detailed Description

For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.

As shown in fig. 1 and 2, the square battery cell module assembling and positioning structure according to an embodiment of the present invention includes: electric core upper bracket 1 and electric core lower carriage 2, be connected with the upper bracket through module is fixed with screw post 11 on the electric core upper bracket 1 to locking screw post 12, be connected with on the electric core lower carriage 2 and lock screw post 21 to the lower carriage of 12 matched with of upper bracket, when electric core upper bracket 1 is connected with electric core lower carriage 2, the upper bracket is connected to locking screw post 12 and lower carriage to locking screw post 21 to lock with the screw.

Specifically, the module is fixed with screw post 11 and is used for fastening the battery cell module in the drain pan.

Specifically, be equipped with on the electric core lower carriage 2 with 3 lower part matched with lower mounting hole 22 of square electric core, be equipped with the flexible shock attenuation liner 4 of taking the gum in the mounting hole 22 down, when strengthening square electric core 3 fixed, fill the clearance that square electric core 3 and electric core lower carriage 2 manufacturing error produced in production, it is firm to ensure square electric core 3 fixed in electric core lower carriage 2, can reduce the vibration impact of square electric core 3 under the vibration environment simultaneously, improves the holistic shock resistance of electric core module.

Specifically, an upper mounting hole 13 matched with the upper part of the square battery cell 3 is formed in the battery cell upper bracket 1, and the upper mounting hole 13 is matched with the lower mounting hole 22 to form an assembling hole for assembling the square battery cell 3; the battery cell upper bracket 1 is provided with a first mounting groove 14 for mounting the battery cell serial copper bar 5, the first mounting groove 14 is communicated with the upper mounting hole 13, and the battery cell serial copper bar 5 conveniently located in the first mounting groove 14 is electrically connected with the square battery cell 3.

Specifically, be equipped with second mounting groove 15 that is used for installing electric core output copper bar 6 on electric core upper bracket 1, second mounting groove 15 is linked together with last mounting hole 13, and the electric core output copper bar 6 that is convenient for lie in second mounting groove 15 is connected with square electric core 3 electricity.

Further, in order to facilitate fixing and installing of the battery cell serial copper bar 5 and the battery cell output copper bar 6, positioning ribs 7 are respectively arranged in the first mounting groove 14 and the second mounting groove 15, and positioning grooves 8 corresponding to the positioning ribs 7 are respectively arranged on the battery cell serial copper bar 5 and the battery cell output copper bar 6.

Further, a third mounting groove for mounting a temperature switch 9 is formed in the battery cell upper support 1.

Specifically, as shown in fig. 3 and 4, the battery cell output copper bar 6 includes a copper bar plate 61, a welding groove 62 is formed on the copper bar plate 61, an output terminal 63 is connected to the welding groove 62, and an internal thread 64 convenient for power screw connection is formed on the output terminal 63.

Further, an outer wall of the output terminal 63 is formed with an annular seal groove 65, and a seal ring 66 is coupled in the annular seal groove 65.

Furthermore, a sealing ring groove is designed on the output terminal, and a sealing ring can be installed for being matched with the module waterproof cover subsequently to achieve a waterproof effect; simultaneously electric core upper bracket still designs the mounting groove that has temperature switch, can beat a little in the mounting groove and lead the heat glue and insert the mounting groove with temperature switch for control electric core temperature, in case electric core temperature is unusual, temperature switch will export unusual signal and give the BMS protection shield, and the BMS protection shield will turn off the circuit and prevent that bigger trouble or accident from appearing in the battery.

In the embodiment, the square battery cells 3 are connected in series by adopting the battery cell series copper bars 5, and the battery cell series copper bars 5 and the lugs of the square battery cells 3 are welded together by matching with a laser welding process; the battery cell serial copper bar 5 is provided with a cross section shaped like a Chinese character 'ji' through a stamping forming process, so that the battery cell serial copper bar 5 has better anti-seismic performance; in addition, the battery cell series copper bar 5 is further provided with a positioning groove 8 for positioning, and the positioning rib 7 of the battery cell upper support 1 is matched with the positioning groove, so that the battery cell series copper bar 5 is accurately and firmly welded with the lug of the square battery cell 3 in a positioning mode.

The assembled battery cell module can be placed into a battery compartment of the bottom shell, and the battery cell modules can be further connected in series and parallel to each other so as to achieve required battery voltage and capacity. The copper bar that the anodal and negative pole output of electricity core module welded is called electric core output copper bar, and it is compared with electric core series connection copper bar, has increased an output terminal on with electric core utmost point ear welding plane, and output terminal and copper bar plane can be a whole through the welding, also can adopt the mode of metal die-casting or NC processing to obtain integrative output copper bar goods that take shape.

The copper bar in the embodiment is made of metal with good welding performance and strong overcurrent loading capacity, and is not made of copper.

The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.

Claims

1. The utility model provides a square electric core module positioning structure, its characterized in that, it includes: the battery cell comprises a battery cell upper support (1) and a battery cell lower support (2), wherein a lower mounting hole (22) matched with the lower part of a square battery cell (3) is formed in the battery cell lower support (2); an upper mounting hole (13) matched with the upper part of the square battery cell (3) is formed in the battery cell upper support (1), and the upper mounting hole (13) is matched with the lower mounting hole (22) to form an assembling hole for assembling the square battery cell (3); a first mounting groove (14) for mounting the battery cell serial copper bar (5) is formed in the battery cell upper support (1), and the first mounting groove (14) is communicated with the upper mounting hole (13);

be equipped with second mounting groove (15) that are used for installing electric core output copper bar (6) on electric core upper bracket (1), second mounting groove (15) are linked together with last mounting hole (13), and the electric core output copper bar (6) that are convenient for lie in second mounting groove (15) are connected with square electric core (3) electricity.

2. The square battery cell module assembling and positioning structure of claim 1, wherein: and positioning ribs (7) are respectively arranged in the first mounting groove (14) and the second mounting groove (15), and positioning grooves (8) which are corresponding to the positioning ribs (7) are respectively arranged on the battery cell serial copper bar (5) and the battery cell output copper bar (6).

3. The square battery cell module assembling and positioning structure of claim 1, wherein: electric core output copper bar (6) are including copper bar board (61), be equipped with welding groove (62) on copper bar board (61), be connected with output terminal (63) on welding groove (62), be formed with internal thread (64) on output terminal (63).

4. The square battery cell module assembling and positioning structure of claim 3, wherein: an annular sealing ring groove (65) is formed in the outer wall of the output terminal (63), and a sealing ring (66) is connected in the annular sealing ring groove (65).

5. The square battery cell module assembling and positioning structure of claim 1, wherein: the battery cell upper support (1) is connected with an upper support locking stud (12) through a module fixing stud (11), the battery cell lower support (2) is connected with a lower support locking stud (21) matched with the upper support locking stud (12), and when the battery cell upper support (1) is connected with the battery cell lower support (2), the upper support locking stud (12) is connected with the lower support locking stud (21) and locked by a screw; the module is fixed and is used for fastening the battery cell module in the bottom shell by the screw column (11).

6. The square battery cell module assembling and positioning structure of claim 1, wherein: and a flexible shock absorption gasket (4) with gum is arranged in the lower mounting hole (22).

7. The square battery cell module assembling and positioning structure of claim 1, wherein: and a third mounting groove for mounting a temperature switch (9) is formed in the battery cell upper support (1).

8. The square battery cell module assembling and positioning structure of claim 1, wherein: the battery cell series copper bar (5) is punched to form a cross section shaped like a Chinese character 'ji'.