CN215034805U

CN215034805U - Utmost point ear welding clamp plate

Info

Publication number: CN215034805U
Application number: CN202120525192.3U
Authority: CN
Inventors: 王�义; 陈育伟; 贺毅; 殷铁映
Original assignee: Henan Liwei New Energy Technology Co ltd
Current assignee: Henan Liwei New Energy Technology Co ltd
Priority date: 2021-03-12
Filing date: 2021-03-12
Publication date: 2021-12-07
Anticipated expiration: 2031-03-12

Abstract

The utility model relates to a utmost point ear welding clamp plate specifically includes: the plate body is provided with an avoidance long hole for avoiding a welding machine; the connecting piece through hole is used for allowing the locking connecting piece to penetrate through so as to be locked and connected with the battery module bus bar fixing plate; the hole edges of the avoidance long holes form pressing surfaces for pressing the lugs, and when the plate body is connected to the insulating plate in a locking mode through the locking connecting piece penetrating through the connecting piece through the through holes, the bending portions of the lugs are pressed on the bus bar through the pressing surfaces. The utility model discloses a utmost point ear welding clamp plate is buckling utmost point ear to with the state of the upper surface laminating of busbar, can be with plate body and busbar fixed plate locking connection through passing the fenestrate locking connection spare of connecting piece to compress tightly the part of buckling of utmost point ear on the busbar through pressing tightly the face, so again dodge the slot hole position and implement the welding, can guarantee utmost point ear and the reliable welding of busbar, guaranteed the quality of battery package.

Description

Utmost point ear welding clamp plate

Technical Field

The utility model relates to an appurtenance especially relates to a utmost point ear welding clamp plate.

Background

With the continuous expansion and application of new energy, the usage amount of the battery pack is larger and larger, which directly puts higher requirements on the manufacturing efficiency and the manufacturing quality of the battery. In the manufacturing process of the battery pack, after a plurality of soft package batteries contained in the battery module of the battery pack are arranged according to a certain series-parallel connection sequence, the tabs of the soft package batteries are required to be connected with the bus bars in a welding mode. The conventional welding method generally includes passing a tab of each soft-package battery through a busbar fixing plate of a battery module, placing a busbar on the busbar fixing plate, bending the tab to a state of being attached to the upper surface of the busbar, and then welding the tab and the busbar. However, when the welding mode is implemented specifically, the tab has certain toughness, and the tab often rebounds after being bent, so that a certain gap is formed between the tab and the bus bar, and the welding quality of the tab and the bus bar is greatly influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a utmost point ear welding clamp plate for solve the insecure problem of utmost point ear and busbar welding quality in the current battery package manufacturing process.

The utility model discloses a utmost point ear welding clamp plate includes:

the plate body is provided with an avoidance long hole for avoiding a welding machine;

the connecting piece through hole is used for allowing the locking connecting piece to penetrate through so as to be locked and connected with the bus bar fixing plate of the battery module;

the hole edges of the avoidance long holes form pressing surfaces for pressing the lugs, and when the plate body is connected to the busbar fixing plate in a locking mode through the locking connecting pieces penetrating through the connecting piece holes, the bending portions of the lugs are pressed on the busbar through the pressing surfaces.

The utility model discloses a utmost point ear welding clamp plate is buckling utmost point ear to with the state of the upper surface laminating of busbar, can be with plate body and busbar fixed plate locking connection through passing the fenestrate locking connection spare of connecting piece to compress tightly the part of buckling of utmost point ear on the busbar through pressing tightly the face, so again dodge the slot hole position and implement the welding, can guarantee utmost point ear and the reliable welding of busbar, guaranteed the quality of battery package. Moreover, the utility model discloses an auxiliary welding tool simple structure, low in manufacturing cost, it is comparatively convenient to implement.

Furthermore, the connecting piece through hole is located at the edge position of the plate body, and the avoidance long hole is located at the position inside the connecting piece through hole of the plate body. The perforated position of connecting piece sets up, can guarantee the whole face of clamp plate and the locking effect of busbar fixed plate as far as, and then has guaranteed the effect that compresses tightly to each utmost point ear and busbar, has guaranteed the welding quality of whole battery module.

Furthermore, the plate body is rectangular, the connecting piece through holes are two rows, the connecting piece through holes are respectively arranged at the edge of the long edge of the rectangular plate body, the avoidance long holes are arranged between the two rows of connecting piece through holes, and the connecting piece through holes are arranged in a row in the length direction of the plate body. The connecting pieces are arranged on the long edge of the rectangular plate body in a punched mode, a large number of connecting piece holes can be arranged, the plate body and the busbar fixing plate can be locked more reliably, and the compression effect on the lugs and the busbars is guaranteed.

Moreover, the avoidance long holes are more than two, and the avoidance long holes in two adjacent rows are arranged in a staggered mode. The structural strength of the plate body is guaranteed, the plate body is prevented from being bent and deformed in the middle when being locked on two sides, and the compression effect is guaranteed.

In addition, the plate body is rectangular, and in four corners of the rectangular plate body, two corners are provided with notches for avoiding and fixing the fixing bolts for fixing the outgoing line bus bars. Because two busbars of lead-out wire have only buckled and have taken on a utmost point ear, in order to guarantee the fixed between this busbar and the busbar fixed plate, generally fix this busbar on the busbar fixed plate through fixing bolt, can avoid taking place to interfere between clamp plate and the fixing bolt through setting up the breach.

Furthermore, the notch is a rectangular notch, so that the structure is simple and the manufacturing is convenient.

Furthermore, the notches are positioned at two ends of the same long edge of the rectangular plate body.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a tab welding pressing plate according to the present invention in a use state;

fig. 2 is an exploded perspective view of the structure shown in fig. 1.

In the figure: 1. a plate body; 10. avoiding the long hole; 11. punching a connecting piece; 12. a notch; 2. a pouch cell; 20. a tab; 3. a busbar fixing plate; 4. a bus bar; 5. soaking cotton; 6. a side insulating plate; 7. and locking the connecting piece.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The features and properties of the present invention are described in further detail below with reference to examples.

The utility model discloses a utmost point ear welding clamp plate's embodiment one:

in order to more clearly explain the tab welding pressure plate of the present embodiment, the following description will be given in conjunction with the use of the tab welding pressure plate.

As shown in fig. 1-2, structurally, the tab welding pressing plate includes a plate body 1, and the plate body 1 is rectangular as a whole. The rectangular plate body 1 is provided with connecting piece through holes 11 arranged in a row at the edge positions of two long sides respectively, and the connecting piece through holes 11 arranged in a row are arranged at equal intervals in the length direction of the rectangular plate body.

The plate body part between the two rows of the connecting piece through holes 11 is provided with the avoidance long holes 10, the length direction of the avoidance long holes 10 is consistent with the width direction of the plate body 1, the avoidance long holes 10 are also arranged in rows, and the arrangement direction of the avoidance long holes 10 is consistent with the arrangement direction of the connecting piece through holes 11, namely, the length direction of the rectangular plate body is arranged. Two rows of the avoidance long holes 10 are respectively corresponding to the two pole ears 20 of the soft package battery 2, and the two rows of the avoidance long holes are arranged in a staggered mode in the length direction of the plate body 1. One side hole edge of the avoidance long hole 10 forms a pressing surface for pressing the bent tab 20 on the bus bar 4 in use.

In addition, in four corners of the rectangular plate body 1, two corners corresponding to two ends of the same long edge are provided with notches 12, and the notches 12 are rectangular and used for avoiding fixing bolts for fixing the outgoing line bus bars.

When the battery module is assembled, firstly, four side insulating plates 6 and a bottom insulating plate (not shown in the figure) are bonded by using a lithium battery special adhesive tape, and a shell structure is preliminarily enclosed; a plurality of soft-package batteries 2 are arranged in a shell structure according to a certain sequence, and then the positive and negative electrodes of each soft-package battery 2 are straightened; a bus bar fixing plate 3 is arranged on the upper side of the grouped soft package batteries 2, and positive and negative lugs of each soft package battery 2 penetrate through lug holes in the bus bar fixing plate 3; placing a bus bar 4 at a corresponding position on the bus bar fixing plate 3, bending and lapping a tab 20 to be connected onto the upper surface of the bus bar 4, and repairing and leveling; for the outgoing line bus bar, it is fixedly connected to the bus bar fixing plate 3 by a fixing bolt (not shown in the figure) passing through the bus bar and the bus bar fixing plate 3; then, a tab welding pressing plate is placed above the battery module, and the avoidance long holes 10 are in one-to-one correspondence with the connection positions of the tabs and the bus bars, namely the pressing surface corresponds to the bending parts of the tabs, and the notches 12 correspond to the fixing bolts; a self-tapping screw 7 penetrates through the connecting piece through hole 11, the self-tapping screw 7 is screwed into the busbar fixing plate 3, the tab welding pressing plate is locked with the busbar fixing plate 3, and the bent part of the tab is pressed on the upper side face of the corresponding busbar 4 through the pressing face; afterwards, dodge long-hole department each utmost point ear and busbar carry out laser welding can, after the welding is accomplished, demolish utmost point ear welding clamp plate, paste the cotton 5 of bubble in the side of the soft packet of battery of group, the top insulation board on shell structure's upper end flap realizes the assembly of battery module promptly.

Can know through the introduction of the structure of above antipodal ear welding clamp plate and using-way, the utility model discloses an utmost point ear welding clamp plate simple structure, in the aspect of the use, when the assembly of battery module, can compress tightly utmost point ear and busbar, guarantee reliable laminating between them, and then guarantee welding connection quality between them, guaranteed the manufacturing quality of battery package.

Certainly, the tab welding pressing plate of the present invention is not limited to the above-described embodiment, and in other embodiments, different from the above-described embodiment, the plate body is of a planar frame structure, and the frame hole of the planar frame structure constitutes the avoiding long hole; the plate body is in a plane U shape, two rows of avoidance long holes are respectively positioned on two side plate body parts of the U shape, or the plate body is in a Chinese character 'ri' shape, and the two rows of avoidance long holes are respectively positioned on two long sides of the Chinese character 'ri' shaped plate body; the distribution positions of the connecting piece through holes can adopt other forms, such as X-shaped distribution or matrix distribution with multiple rows and multiple columns; aiming at different soft package battery arrangement modes, the avoiding long hole can be provided with four rows, two adjacent rows in the middle are arranged oppositely, two rows on two sides are arranged oppositely, and two adjacent rows in the middle and two sides on two sides are arranged in a staggered mode; when the outgoing line bus bar is located at different positions, the notch position on the plate body may also be located at different positions, for example, at the corner corresponding to the two ends of the same wide side of the plate body, or at the diagonal position of the rectangular plate body.

The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the contents of the description and drawings of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a utmost point ear welding clamp plate, characterized by includes:

the plate body (1) is provided with an avoidance long hole (10) for avoiding a welding machine;

a connecting piece through hole (11) for the locking connecting piece (7) to pass through to lock and connect the bus bar fixing plate (3) of the battery module;

the hole edges of the avoidance long holes (10) form pressing surfaces for pressing the tabs (20), and when the plate body (1) is locked and connected to the busbar fixing plate (3) through the locking connecting pieces (7) penetrating through the connecting piece through holes (11), the bending parts of the tabs (20) are pressed on the busbar (4) by the pressing surfaces.

2. The tab welding press plate as claimed in claim 1, wherein the connecting member through-hole (11) is located at an edge position of the plate body (1), and the relief elongated hole (10) is located at a position inside the connecting member through-hole (11) of the plate body (1).

3. The tab welding press plate according to claim 2, wherein the plate body (1) is rectangular, the connecting member through holes (11) are arranged in two rows at the long edge of the rectangular plate body (1), and the relief long holes (10) are arranged between the two rows of the connecting member through holes (11) and are arranged in a row in the length direction of the plate body (1).

4. The tab welding pressing plate as claimed in claim 3, wherein the number of the relief long holes (10) is more than two, and two adjacent rows of the relief long holes (10) are arranged in a staggered manner.

5. The tab welding pressing plate as claimed in any one of claims 1 to 4, wherein the plate body (1) is rectangular, and notches (12) are arranged at two corners of four corners of the rectangular plate body (1) for avoiding fixing bolts for fixing the outgoing line bus bars (4).

6. The tab welding press plate as claimed in claim 5, wherein the notch (12) is a rectangular notch (12).

7. The tab welding press plate as claimed in claim 5, characterized in that the notches (12) are located at both ends of the same long side of the rectangular plate body (1).