CN216850244U

CN216850244U - Soft packet of module welded structure of power battery

Info

Publication number: CN216850244U
Application number: CN202220508984.4U
Authority: CN
Inventors: 毛海波
Original assignee: Yien New Power Technology Shandong Co ltd
Current assignee: Yien New Power Technology Shandong Co ltd
Priority date: 2022-03-10
Filing date: 2022-03-10
Publication date: 2022-06-28
Anticipated expiration: 2032-03-10

Abstract

The utility model discloses a power battery laminate polymer module welded structure, include: the limiting block is of a cuboid block structure, a positioning block is arranged at one end of the limiting block, a limiting buckle is arranged on the surface of one side of the positioning block, and a fixing cover is arranged on the surface of one end of the positioning block; the lug is arranged on two sides of one end of the limiting block, the surface of the limiting block is provided with a U-shaped welding copper bar, and a plastic support is arranged between the U-shaped welding copper bar and the limiting block; and the module buckle is arranged on one side of the positioning block. This soft packet of module welded structure of power battery, the inside utmost point ear of device module is located stopper upper end both sides, when the aggregate erection, need not to insert one by one alone, improves the inside normal use of module, prevents to disconnect from or break the circuit corridor of U-shaped welding copper bar between the inside U-shaped welding copper bar that has installed when inserting utmost point ear in the later stage, reduces the operation degree of difficulty.

Description

Soft packet of module welded structure of power battery

Technical Field

The utility model relates to a power battery technical field specifically is a soft packet of module welded structure of power battery.

Background

The soft package battery has the advantages of small volume, light weight, high specific energy, flexible design and the like, so the soft package battery is popular with battery manufacturers and new energy vehicles, is widely applied to the fields of new energy vehicles, heavy machinery, energy storage and the like at present, the heavy machinery often needs to provide enough output power, so the power battery is required to be charged and discharged at a high rate, the soft package battery has the advantages of small volume, light weight, high specific energy, flexible design and the like, the soft package battery is popular with the battery manufacturers and the new energy vehicles, the heavy machinery often needs to provide enough output power, so the power battery is required to be charged and discharged at a high rate, lugs are required to be inserted into grooves of a busbar one by one in the existing module internal production, the operation difficulty is high, the lugs penetrate through the grooves and are bent to meet the requirement on the consistency of the lug length, and the phenomenon of insufficient welding and poor welding is easy to occur, Welding quality problems such as burn-through to some modules in addition are very little because the restriction in size space, and the distance between the electric core leads to with utmost point ear welded busbar intermediate width too little, and the module ability of overflowing is not enough, can not satisfy big multiplying power charge-discharge requirement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a soft packet of module welded structure of power battery to propose current module internal production need insert utmost point ear one by one in solving above-mentioned background art in the recess of busbar, the operation degree of difficulty is big, and utmost point ear passes the recess and bends the length uniformity requirement height of utmost point ear again, rosin joint appears easily, welding quality problems such as burn, and some modules in addition are because size space's restriction, the distance is very little between the electric core, lead to with utmost point ear welded busbar middle width too little, the module ability of overflowing is not enough, can not satisfy the problem of big multiplying power charge-discharge requirement.

In order to achieve the above object, the utility model provides a following technical scheme: a welding structure of a soft package module of a power battery comprises a limiting block, wherein the limiting block is of a cuboid block structure, a positioning block is arranged at one end of the limiting block, a limiting buckle is arranged on the surface of one side of the positioning block, and a fixing cover is arranged on the surface of one end of the positioning block;

the lug is arranged on two sides of one end of the limiting block, the surface of the limiting block is provided with a U-shaped welding copper bar, a plastic support is arranged between the U-shaped welding copper bar and the limiting block, and the upper end of the plastic support is provided with a battery cell;

the module buckle is installed on one side of the positioning block, a connecting plate is arranged on one side of the module buckle, a module shell is arranged on one side of the connecting plate, and the lower end of the module shell wraps the lower end of the connecting plate.

By adopting the technical scheme, the position of the antipodal ear is effectively reduced to be fixed and limited, and the installation efficiency of workers is improved.

Preferably, a limiting opening is formed in the surface of one side of the limiting block, a connecting block is arranged on one side of the limiting opening, and the limiting block is of a U-shaped structure.

Adopt above-mentioned technical scheme, be convenient for connect between the electric core and the copper bar of the inside both sides of module, reduce the distance difference between the inside.

Preferably, the stopper equidistance sets up, and installs 2 between the stopper through the connecting wire, 2 the stopper sets up to a set of, and installs the connection buckle between every stopper of group.

By adopting the technical scheme, the copper bar details inside the module are effectively integrated when the limiting block inside the combined device.

Preferably, one end of the plastic support is provided with an arched series copper bar, the arched series copper bar covers one side of the U-shaped welding copper bar, and one side of the arched series copper bar is in threaded connection with the connecting block.

By adopting the technical scheme, the arched serial copper bars inside the device are effectively connected with the U-shaped welding copper bars in series.

Preferably, the module buckles and the limiting blocks are arranged in a one-to-one correspondence mode, and module baffles are arranged between the module buckles and the limiting blocks.

By adopting the technical scheme, the copper bar inside the limiting block is convenient to position and limit, and the normal trend of current is effectively improved.

Preferably, the upper end of the connecting plate is arranged at one end of the module buckle, the connecting plate is of a cross structure, and two sides of the lower end of the connecting plate are wrapped by the module shell.

By adopting the technical scheme, the battery core inside the effective protection module reduces the short circuit condition caused by external leakage and protects the two sides through the connecting plates on the two sides of the device.

Compared with the prior art, the beneficial effects of the utility model are that: this power battery laminate polymer module welded structure:

1. when the device is used, the lugs in the device module are positioned on two sides of the upper end of the limiting block, and are not required to be inserted one by one during combined installation, so that the normal use of the inside of the module is improved, the phenomenon that the circuit corridor of the U-shaped welded copper bar is disconnected or broken when the lugs are inserted in the later stage is prevented, and the operation difficulty is reduced;

2. through the arrangement of the plastic support and the limiting buckle, the U-shaped welding copper bar is installed on one side of the plastic support, the lugs extend out of open grooves in two sides of the top of the support without bending, the extending lugs and the U-shaped welding copper bar are welded together by laser welding, 2 electric cores are connected in parallel, and 2 electric cores are respectively placed on two sides of the plastic support in the polarity + + or-direction and are limited, so that the effect after welding is effectively improved;

3. when the combination installation, a plurality of electric core units link together through the module shell, and adjacent electric core unit homonymy is connected through arch series connection copper bar according to positive negative or burden, and the region of not connecting arch series connection copper bar needs place the module baffle between the unit and forms insulating region to prevent inside short circuit, do not influence the use when needs increase electric current.

Drawings

FIG. 1 is a schematic view of the overall three-dimensional structure of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A of FIG. 1 according to the present invention;

FIG. 3 is a schematic view of the installation structure of the limiting block and the positioning block of the present invention;

fig. 4 is a schematic view of the overall overlooking installation structure of the present invention.

In the figure: 1. a limiting block; 2. positioning blocks; 3. a limiting buckle; 4. a fixed cover; 5. a tab; 6. welding a copper bar in a U shape; 7. a plastic support; 8. arched serial copper bars; 9. a limiting port; 10. connecting blocks; 11. a module baffle; 12. module buckling; 13. a connecting plate; 14. a module housing; 15. an electric core; 16. a connecting wire; 17. and (5) connecting a buckle.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a soft package module welding structure of a power battery comprises a limiting block 1, a positioning block 2, a limiting buckle 3, a fixing cover 4, a lug 5, a U-shaped welding copper bar 6, a plastic support 7, an arched serial copper bar 8, a limiting opening 9, a connecting block 10, a module baffle 11, a module buckle 12, a connecting plate 13, a module shell 14, an electric core 15, a connecting wire 16 and a connecting buckle 17;

the limiting blocks 1 are arranged to be of rectangular block structures, one end of each limiting block 1 is provided with a positioning block 2, one side surface of each positioning block 2 is provided with a limiting buckle 3, one end surface of each positioning block 2 is provided with a fixing cover 4, one side surface of each limiting block 1 is provided with a limiting opening 9, one side of each limiting opening 9 is provided with a connecting block 10, the limiting blocks 1 are arranged to be of U-shaped structures, the limiting blocks 1 are arranged at equal intervals, 2 limiting blocks 1 are installed through connecting

lines

16, 2 limiting blocks 1 are arranged to be one group, and a connecting buckle 17 is installed between each group of limiting blocks 1;

when the device is assembled, the limiting block 1 and the positioning block 2 are mutually fixed through the

plastic support

7, 2 lugs 5 are installed on two sides of one end of the limiting block 1, the 2 lugs 5 are welded on two sides of the limiting block 1 by laser, then the arc-shaped end of the U-shaped welding copper bar 6 is placed at the upper end of the limiting block 1, the other end of the U-shaped welding copper bar 6 is clamped inside the limiting buckle 3 on the surface of the positioning block 2, the lower end of the U-shaped welding copper bar 6 is covered by the fixing cover 4 to protect the inside, current leakage caused by external contact is reduced, and after two sides of the two limiting blocks 1 are fixed through the connecting lines 16, the fixing is carried out according to the quantity required by modules;

the lug 5 is arranged on two sides of one end of the limiting block 1, the U-shaped welding copper bar 6 is arranged on the surface of the limiting block 1, a plastic support 7 is arranged between the U-shaped welding copper bar 6 and the limiting block 1, an electric core 15 is arranged at the upper end of the plastic support 7, an arched serial copper bar 8 is arranged at one end of the plastic support 7, the arched serial copper bar 8 covers one side of the U-shaped welding copper bar 6, and one side of the arched serial copper bar 8 is in threaded connection with the connecting block 10;

after the lug 5 is respectively placed into the plastic support 7 according to the polarity + + or-direction for welding, the arc-shaped structure of the U-shaped welding copper bar 6 and the arc-shaped serial copper bar 8 in the device are welded and fixed at one end of the plastic support 7 by using laser, the arc-shaped serial copper bar 8 and the connecting block 10 are fixed by using bolts, and an electric wire is connected between the arc-shaped serial copper bars 8 of the two limiting blocks 1 in one group, so that a loop is formed between the two arc-shaped serial copper bars 8;

the module buckle 12 is installed on one side of the positioning block 2, a connecting plate 13 is arranged on one side of the module buckle 12, a module shell 14 is arranged on one side of the connecting plate 13, the lower end of the module shell 14 wraps the lower end of the connecting plate 13, the module buckle 12 and the limiting block 1 are arranged in a one-to-one correspondence mode, a module baffle 11 is arranged between the module buckle 12 and the limiting block 1, the upper end of the connecting plate 13 is installed at one end of the module buckle 12, the connecting plate 13 is arranged in a cross-shaped structure, and two sides of the lower end of the connecting plate 13 are wrapped by the module shell 14;

after the position installation between the inside arch series connection copper bar 8 of stopper 1 between the multiunit finishes, the module buckle 12 that has been installed to 2 one sides of the locating piece of the whole row of stopper 1, form the return circuit through connecting buckle 17 between stopper 1 with every group, install module baffle 11 between every group or a set of and single, protection circuit prevents the circuit short circuit, after forming the return circuit between the electric core through stopper 1 both sides, module buckle 12 outer end is blocked by connecting plate 13, the circuit on both sides limit is protected to connecting plate 13, the circuit of the other both sides of module shell 14 protection.

The working principle is as follows: when the power battery soft package module welding structure is used, the limiting blocks 1 and the positioning blocks 2 are connected through the

plastic support

7, 2 tabs 5 are installed on two sides of the battery cell 18 on the surface of the plastic support 7, the U-shaped welding copper bar 6 is clamped inside the limiting buckle 3, one end of the U-shaped welding copper bar 6 is welded with the arched serial copper bar 8, the fixing cover 4 protects the other end, the limiting port 9 prevents the arched serial copper bar 8 from displacing, the arched serial copper bar 8 and the connecting block 10 are fixed through bolts, the limiting blocks 1 are installed as required, the limiting blocks 1 of each group are fixed through the connecting buckles 17, each limiting block 1 is fixed through the connecting wires 16, after the combination between the limiting blocks 1 is finished, the limiting blocks 1 of each group are separated through the module baffle 11, the connecting plate 13 and the module shell 14 protect the external whole, protect the external surface of the arched serial copper bar 8, the whole production operation is simple, welding quality can be effectively guaranteed, the requirement of high-rate charge and discharge can be met, and overall practicability is improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a power battery laminate polymer module welded structure which characterized in that includes:

the limiting block (1) is of a cuboid block structure, one end of the limiting block (1) is provided with a positioning block (2), a limiting buckle (3) is arranged on the surface of one side of the positioning block (2), and a fixing cover (4) is arranged on the surface of one end of the positioning block (2);

the lug (5) is mounted on two sides of one end of the limiting block (1), the surface of the limiting block (1) is provided with a U-shaped welding copper bar (6), a plastic support (7) is arranged between the U-shaped welding copper bar (6) and the limiting block (1), and the upper end of the plastic support (7) is provided with an electric core (15);

the module buckle (12) is installed on one side of the positioning block (2), a connecting plate (13) is arranged on one side of the module buckle (12), a module shell (14) is arranged on one side of the connecting plate (13), and the lower end of the module shell (14) wraps the lower end of the connecting plate (13).

2. The soft packet of module welded structure of power battery of claim 1, characterized in that: limiting block (1) one side surface is provided with spacing mouthful (9), and just spacing mouthful (9) are provided with connecting block (10) on one side, limiting block (1) sets up to U column structure.

3. The soft packet of module welded structure of power battery of claim 2, characterized in that: stopper (1) equidistance sets up, and installs through connecting wire (16) between 2 stopper (1), 2 stopper (1) sets up to a set of, and installs between every stopper of group (1) and connect buckle (17).

4. The soft packet of module welded structure of power battery of claim 1, characterized in that: the plastic support is characterized in that an arched series copper bar (8) is arranged at one end of the plastic support (7), the arched series copper bar (8) covers one side of the U-shaped welding copper bar (6), and one side of the arched series copper bar (8) is in threaded connection with the connecting block (10).

5. The soft packet of module welded structure of power battery of claim 1, characterized in that: the module buckles (12) and the limiting blocks (1) are arranged in a one-to-one correspondence mode, and module baffles (11) are arranged between the module buckles (12) and the limiting blocks (1).

6. The soft packet of module welded structure of power battery of claim 1, characterized in that: the upper end of the connecting plate (13) is arranged at one end of the module buckle (12), the connecting plate (13) is arranged to be of a cross structure, and two sides of the lower end of the connecting plate (13) are wrapped by the module shell (14).