Battery cell protection plate welding device of lithium battery

Abstract

The utility model relates to the field of lithium batteries, and discloses a welding device for a battery cell protection plate of a lithium battery. The two assembling plates are both installed on the connecting rod, and the assembling plates are arranged to rotate on the connecting rod; the assembly plate comprises two assembly sleeves, the two assembly sleeves are installed on the assembly plate and symmetrically arranged, and the two assembly sleeves are arranged to be close to or away from each other at the same time. According to the utility model, the two assembly plates are arranged, and two electrodes can be assembled on each assembly plate, so that the simultaneous use of at most four electrodes is realized, the welding efficiency is improved, particularly, under the condition that the battery cell protection plate comprises a plurality of welding point positions, the welding of the plurality of point positions can be completed at one time, the welding period is shortened, and the production cost is reduced. By adjusting the distance between the two assembling sleeves, a user can accurately adjust the use distance between the two electrodes.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of lithium battery especially relates to a lithium battery's electric core protection board welding set. BACKGROUND

[0002] In the manufacturing process of small lithium battery (especially 18650 battery pack), the welding of the electric core protection board is one of the key steps to ensure the stability and safety of the battery pack. The electric core protection board not only takes charge of the protection functions such as overcharge, overdischarge and short circuit of the battery, but also undertakes the connection and transmission tasks of the internal circuit of the battery pack.

[0003] The welding of the electric core protection board mostly adopts tin soldering or spot welding technology. Although the tin soldering process is relatively simple, the welding strength, conductivity and corrosion resistance are often difficult to meet the needs of high-performance battery pack. In comparison, the spot welding technology gradually becomes the mainstream choice for the welding of the electric core protection board because of its high welding strength, excellent conductivity and controllable welding process.

[0004] The existing spot welding equipment generally has one pair of electrodes (i.e. two electrodes). Since each welding area usually contains multiple points that need to be welded, the existing spot welding structure can only weld one point at a time and cannot realize simultaneous spot welding of multiple points, thereby reducing the welding efficiency. SUMMARY

[0005] To solve the above-mentioned problems, the utility model is implemented through the following technical solutions.

[0006] A lithium battery's electric core protection board welding set, comprising: a connecting rod; two assembly plates, both of which are installed on the connecting rod, and the assembly plates are arranged to rotate on the connecting rod; the assembly plate comprises two assembly sleeves, both of which are installed on the assembly plate and arranged symmetrically, and both assembly sleeves are arranged to approach or move away from each other simultaneously, and the assembly sleeve is used for installing an electrode.

[0007] The assembly plate further comprises: two adjusting holes, which are installed on the assembly plate, and both assembly sleeves are connected in the two adjusting holes respectively.

[0008] The assembly plate further comprises: two moving grooves, which are respectively arranged in the inner walls of the two adjusting holes; two moving rods, which are respectively connected in the two moving grooves, and one end of each moving rod is connected with one assembly sleeve.

[0009] The assembly plate further comprises: two lead screws, which are respectively connected in the two moving grooves, and one end of each lead screw is connected with one moving rod; a rotating wheel, which is installed on the assembly plate, and one end of each lead screw is connected on both sides of the rotating wheel.

[0010] The assembly sleeve comprises two second bolts, both of which are installed on the assembly sleeve and symmetrically arranged, and are connected with the electrodes, and the second bolts are used to fix the positions of the electrodes on the assembly sleeve.

[0011] The assembly plate further comprises a first bolt installed on the assembly plate, which is connected with the connecting rod.

[0012] The connecting rod comprises a plurality of limiting grooves opened on the connecting rod, and one end of the first bolt is connected in the limiting groove.

[0013] The assembly plate further comprises a through hole, and the connecting rod is arranged in the through hole.

[0014] The utility model provides a kind of electric core protection plate welding device of lithium battery.Compared with prior art, it has the following beneficial effects: by setting two assembly plates, two electrodes can be assembled on each assembly plate, the simultaneous use of maximum four electrodes is realized, welding efficiency is improved, especially in the case where the electric core protection plate contains multiple welding points, the welding of multiple points can be completed at one time, and the welding period is shortened. By adjusting the spacing of the two assembly sleeves, the user can accurately adjust the use spacing of the two electrodes, and the second bolt on the assembly sleeve allows the user to adjust according to the size and weight of the electrode, ensuring the stability and accuracy of the electrode during welding, so that the welding device can be applied to electrodes of various specifications, increasing its versatility and flexibility. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The utility model provides a three-dimensional structure schematic diagram.

[0016] Figure 2 Another perspective three-dimensional structure schematic diagram of the utility model.

[0017] Figure 3 Assembly plate cross section structure schematic diagram of the utility model.

[0018] Figure 4 Connecting rod and assembly plate cross section structure schematic diagram of the utility model.

[0019] Figure 5 Assembly plate unfolded state schematic diagram of the utility model.

[0020] The reference signs in the drawings are:

[0021] 100, connecting rod; 101, limiting groove;

[0022] 200, assembly plate; 201, adjusting hole; 202, first bolt; 203, moving groove; 204, moving rod; 205, screw rod; 206, rotating wheel; 207, through hole;

[0023] 300, assembly sleeve; 301, second bolt;

[0024] 400, electrode. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model is described clearly and completely, obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0026] Referring to Figures 1-5 A kind of cell protection plate welding device of lithium battery, it include: connecting rod 100, as the basic structure of entire welding device, connecting rod 100 provides stability and support, so that two assembly plates 200 can be stably installed on it, and necessary rotation adjustment can be carried out;Two assembly plates 200, two assembly plates 200 are installed on connecting rod 100, assembly plate 200 is set to rotate on connecting rod 100, when two assembly plates 200 are overlapped, only two electrodes 400 can be installed for use, when one of assembly plate 200 is rotated on connecting rod 100 and is perpendicular to another assembly plate 200, two electrodes 400 can be assembled on two assembly plates 200, four electrodes 400 can be used to weld simultaneously cell protection plate;Assembly plate 200 includes two assembly sleeves 300, two assembly sleeves 300 are installed on assembly plate 200, and are symmetrically arranged, two assembly sleeves 300 are set to be close or far away simultaneously, assembly sleeve 300 is used to install electrode 400, assembly sleeve 300 can flexibly assemble electrode 400, and two assembly sleeves 300 can drive electrode 400 to move, and the spacing of two electrodes 400 is adjusted.

[0027] The assembly plate 200 further comprises two adjusting holes 201 mounted on the assembly plate 200, two assembly sleeves 300 connected in the two adjusting holes 201 respectively, two moving grooves 203 respectively provided on the inner walls of the two adjusting holes 201, two moving rods 204 respectively connected in the two moving grooves 203, one end of the two moving rods 204 being connected with the two assembly sleeves 300 respectively, the moving rod 204 being connected between the assembly sleeve 300 and the lead screw 205, and playing a role of transmitting power and adjusting the position of the assembly sleeve 300. Through the moving rod 204, the moving distance and direction of the assembly sleeve 300 can be conveniently controlled, and accurate welding positioning can be realized; two lead screws 205 are respectively connected in the two moving grooves 203, one end of the two lead screws 205 being connected with the two moving rods 204 respectively; a rotating wheel 206 is mounted on the assembly plate 200, one end of the two lead screws 205 being connected on both sides of the rotating wheel 206 respectively, the rotating wheel 206 can drive the lead screw 205 to rotate through rotation, and in turn drives the moving rod 204 and the assembly sleeve 300 to move, and the design of the lead screw 205 makes the movement of the assembly sleeve 300 accurate and controllable, facilitating fine adjustment.

[0028] The assembly sleeve 300 comprises two second bolts 301, the two second bolts 301 being mounted on the assembly sleeve 300 and being symmetrically arranged, the two second bolts 301 being connected with the electrode 400, the second bolt 301 being used for fixing the position of the electrode 400 on the assembly sleeve 300, the second bolt 301 being used for fixing the position of the electrode 400 on the assembly sleeve 300, and ensuring the stability and accuracy of the electrode 400 in the welding process. By adjusting the fastening degree of the second bolt 301, the electrode 400 of different sizes and weights can be adapted, and the applicability and flexibility of the welding device are increased.

[0029] The assembly plate 200 further comprises a first bolt 202 mounted on the assembly plate 200, the first bolt 202 being connected with the connecting rod 100, the first bolt 202 ensuring the stability and reliability of the entire welding device, and by adjusting the position of the first bolt 202, the mounting angle of the assembly plate 200 on the connecting rod 100 can be changed to adapt to different welding requirements.

[0030] The connecting rod 100 comprises a plurality of limiting grooves 101 provided on the connecting rod 100, and one end of the first bolt 202 is connected in the limiting groove 101.

[0031] The assembly plate 200 further comprises a through hole 207, the connecting rod 100 being arranged in the through hole 207, and the connecting rod 100 being hand-held for use or being mounted on the output shaft of the spot welding machine for use.

[0032] In use, according to the welding requirements, the relative position of the assembly plate 200 is determined, if only two electrodes 400 are needed, two assembly plates 200 can be overlapped, if four electrodes 400 are needed, one assembly plate 200 is rotated on the connecting rod 100 to a position perpendicular to the other assembly plate 200, on each assembly plate 200, the position of the two assembly sleeves 300 is adjusted through the combination of the adjusting hole 201, the moving slot 203, the moving rod 204 and the lead screw 205, which can be achieved by rotating the rotating wheel 206, the rotating wheel 206 drives the lead screw 205 to rotate, and then drives the moving rod 204 and the assembly sleeve 300 to move, achieving accurate welding positioning, the electrode 400 is installed on the assembly sleeve 300, the second bolt 301 is used to fix the electrode 400 in the appropriate position on the assembly sleeve 300, the tightening degree of the second bolt 301 can be adjusted according to the size and weight of the electrode 400 to ensure the stability and accuracy of the electrode 400 during welding, after ensuring that all electrodes 400 have been correctly installed and fixed, the welding equipment is started, and the welding process of the battery protection plate is started, according to the welding requirements, the position and angle of the electrode 400 can be adjusted to achieve the best welding effect.

[0033] In summary, compared with the prior art, the following beneficial effects are achieved:

[0034] By setting two assembly plates 200, two electrodes 400 can be assembled on each assembly plate 200, achieving the simultaneous use of up to four electrodes 400, improving the welding efficiency, especially in the case of a battery protection plate containing multiple welding points, the welding of multiple points can be completed at one time, shortening the welding period.

[0035] By adjusting the distance between the two assembly sleeves 300, the user can accurately adjust the usage distance of the two electrodes 400, the design of the second bolt 301 on the assembly sleeve 300 allows the user to adjust according to the size and weight of the electrode 400, ensuring the stability and accuracy of the electrode 400 during welding, making the welding device applicable to electrodes 400 of various specifications, increasing its versatility and flexibility.

[0036] It is to be noted that the relational terms herein, such as first and second, and the like, are used solely to distinguish one from another entity or action without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, 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 can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0037] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalent ones; and these modifications or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A cell protection plate welding device of a lithium battery, characterized in that, The utility model relates to a kind of electrode assembly device, including: Connecting rod (100); Two assembly plates (200), two assembly plates (200) are installed on the connecting rod (100), the assembly plate (200) is arranged to rotate on connecting rod (100); The assembly plate (200) includes two assembly sets (300), two assembly sets (300) are installed on the assembly plate (200), symmetrically arranged, two assembly sets (300) are arranged to be close or far away simultaneously, and the assembly set (300) is used to install electrode (400).

2. The lithium battery cell protection plate welding device according to claim 1, wherein, The assembly plate (200) further includes: Two adjusting holes (201) are installed on the assembly plate (200), and two assembly sets (300) are connected in two adjusting holes (201) respectively.

3. The lithium battery cell protection plate welding device according to claim 2, wherein, The assembly plate (200) further includes: Two moving grooves (203) are respectively arranged in the inner wall of two adjusting holes (201); Two moving rods (204) are respectively connected in two moving grooves (203), and one end of two moving rods (204) is respectively connected with two assembly sets (300).

4. The lithium battery cell protection plate welding device according to claim 3, characterized in that, The assembly plate (200) further includes: Two lead screws (205) are respectively connected in two moving grooves (203), and one end of two lead screws (205) is respectively connected with two moving rods (204); Rotary wheel (206) is installed on the assembly plate (200), and one end of two lead screws (205) is respectively connected on both sides of rotary wheel (206).

5. The lithium battery cell protector plate welding device of claim 1, wherein, The assembly set (300) includes: Two second bolts (301) are installed on the assembly set (300), symmetrically arranged, two second bolts (301) are connected with electrode (400), and the second bolt (301) is used to fix the position of electrode (400) on the assembly set (300).

6. The lithium battery cell protector plate welding device of claim 1, wherein, The assembly plate (200) further includes: First bolt (202) is installed on the assembly plate (200), and the first bolt (202) is connected with connecting rod (100).

7. The lithium battery cell protector plate welding device of claim 6, wherein, The connecting rod (100) includes: A plurality of limiting grooves (101) are arranged on the connecting rod (100), and one end of the first bolt (202) is connected in the limiting groove (101).

8. The lithium battery cell protector plate welding device of claim 1, wherein, The assembly plate (200) further includes: Through hole (207), and the connecting rod (100) is arranged in the through hole (207).

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