Multi-tab battery and stop frame

Abstract

The stop frame comprises an upper stop frame and a lower stop frame, the lower stop frame comprises a supporting part, a plurality of through holes which are evenly distributed are formed in the supporting part, extending arms are arranged on the two sides of the supporting part, side edge supports are arranged at the ends of the extending arms, and the side edge supports are connected with the upper stop frame and the lower stop frame. Side edge grooves are further formed in the end parts of the side edge supports; the multi-tab battery comprises a battery cover plate, a battery roll core is arranged in the battery cover plate, a plurality of tabs are arranged in the battery roll core, and the tabs are fixed by the stop frame; according to the utility model, the structure is simple, the assembly requirement can be met, the risk that the tabs are torn due to the vibration of the roll core in the use process is avoided, the multiple tabs can fully play the role, the current distribution is more uniform, the overcurrent capability of the roll core group is stronger, and the temperature rise under the high-rate discharge working condition is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technology field of multi -pole lug battery core combination, concretely is a kind of multi -pole lug battery and stop frame. BACKGROUND

[0002] The pole lug of winding core is mostly interval arrangement, i.e. only 1 pole lug is present in adjacent two layers of pole piece, the ratio of pole lug and winding core layer is approximately 1:2, two winding cores and cover plate butterfly weld need to be turned mutually after sticking, there is larger gap between cover plate and winding core top, winding core group is not fixed between cover plate, winding core group is easy to shake in use.

[0003] Winding core group with interval arrangement pole lug, overcurrent capacity is low, current distribution is uneven, internal resistance is big, heat output is big, especially in large ratio discharge working condition, temperature rise is difficult to effectively control, if only rely on cover plate to fix winding core group, winding core group is vulnerable to suffer from vibration impact in shell content, and it can lead to pole lug fracture after years, cause pole lug and pole post part to heat in charge and discharge use, even generate spark at pole lug fracture place under large current working condition, and cause safety risk. SUMMARY

[0004] The utility model discloses a kind of multi -pole lug battery and stop frame, to solve the problem presented in above background technology. To achieve the above purpose, the utility model provides the following technical scheme: a stop frame, including upper stop frame and lower stop frame, the lower stop frame includes support part, a plurality of evenly distributed through holes are set on the support part, the both sides of support part are equipped with extension arm, the end of extension arm is equipped with side edge support, the end of side edge support is also equipped with side edge groove;

[0005] The both sides of extension arm are equipped with rectangular or trapezoidal notch, notch length is greater than pole lug width, 1 / 10 of lower stop frame width≤notch width≤1 / 2 of lower stop frame width.

[0006] Preferably, the upper stop frame is long rectangular, and a plurality of buckle latches are arranged on the upper stop frame, buckle holes are arranged at four corners of the support part, and buckle holes are also arranged on the side edge support, and the buckle holes and the buckle latches are one-to-one corresponding.

[0007] Preferably, the top of the support part and the top of the side edge groove are located on the same horizontal line.

[0008] Preferably, the bottom of the support part and the bottom of the side edge support are located on the same horizontal line.

[0009] Preferably, the height of the support part is the distance between the top of the battery cover plate and the top of the battery winding core.

[0010] The utility model discloses still provide following technical scheme: a kind of multi-tab battery, including battery cover plate, battery cover plate is equipped with battery roll core, the battery roll core is equipped with multiple tabs, tab is fixed by the stop frame of above-mentioned between.

[0011] Compared with prior art, the utility model has the beneficial effects that: the utility model novel design uses the stop frame provided by the utility model when the multi-tab battery is combined, can meet the assembly demand, also avoid the risk that tab is torn due to vibration during use of roll core, so that the tab of multiple settings can fully play its role, current distribution is more uniform, and the overcurrent capacity of roll core group is stronger, effectively reduce the temperature rise under high rate discharge working condition. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is whole structure schematic diagram of multi-tab battery and stop frame in the utility model;

[0013] Figure 2 It is Figure 1 enlarged view of A part in;

[0014] Figure 3 it is upper structure schematic diagram of lower stop frame in the utility model;

[0015] Figure 4 it is lower stop frame bottom structure schematic diagram in the utility model;

[0016] In the drawing, upper stop frame-1, buckle latch-11, lower stop frame-2, support part-21, through hole-22, extension arm-23, side edge support-24, side edge recess-25, buckle hole-26, tab-3, battery cover plate-4, battery roll core-5. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only 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 those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0018] Please refer to Figure 1 The utility model provides a kind of technical scheme: a kind of stop frame, including upper stop frame 1 and lower stop frame 2, the lower stop frame 2 is integrally injection molded, including support part 21, the support part 21 is equipped with multiple evenly distributed through holes 22, the through hole 22 is circular or oval or rectangular, electrolyte is injected from through hole 22, so that electrolyte quickly infiltrates roll core.

[0019] Two sides of the support part 21 are provided with extension arms 23, the end of the extension arm 23 is provided with a side edge support 24, the end of the side edge support 24 is also provided with a side edge groove 25, the two sides of the extension arm 23 are provided with a rectangular or trapezoidal notch, the notch length is greater than the width of the tab, 1 / 10 of the width of the lower stop frame 2 ≤ the notch width ≤ 1 / 2 of the width of the lower stop frame 2, the AB core needs to be turned over 90 degrees when the AB core is combined, so the notch is arranged to facilitate the bending of the tab to facilitate the combination of the AB core.

[0020] The upper stop frame 1 is a long rectangular shape, the upper stop frame 1 is provided with a plurality of buckle latches 11, the four corners of the support part 21 are provided with buckle holes 26, the side edge support 24 is also provided with a buckle hole 26, the buckle hole 26 and the buckle latch 11 are one-to-one corresponding, thereby fixing the upper and lower stop frames 2, thereby fixing the tab.

[0021] The top of the support part 21 and the top of the side edge groove 25 are located on the same horizontal line, and the bottom of the support part 21 and the bottom of the side edge support 24 are located on the same horizontal line, thereby preventing unevenness when contacting the core from eventually causing the core to tilt and affecting normal use of the battery.

[0022] The height of the support part 21 ≤ the distance between the battery cover plate 4 and the battery core 5, thereby limiting the up and down vibration displacement of the core and supporting the core.

[0023] The utility model also provides a kind of technical scheme: a kind of multi-tab battery, including battery cover plate 4, battery core 5 is equipped in the battery cover plate 4, a plurality of tabs 3 are equipped in the battery core 5, tab 3 setting proportion is 1 / 2 layer number≤tab number≤layer number, the tab shape and number needed are cut out by die cutting, the tab spacing needs to be accurately controlled during die cutting process, to ensure that tab after winding is shifted within controllable range, a plurality of tabs are fixed by the above-mentioned stop frame, which can meet the assembly requirements, and avoid the risk of tab tearing caused by vibration of the core during use, so that the multiple tabs can fully play their role, the current distribution is more uniform, the core group has stronger overcurrent capacity, and the temperature rise under high-rate discharge working condition is effectively reduced.

[0024] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A stop frame comprising an upper stop frame (1) and a lower stop frame (2), characterized in that: The lower stop frame (2) comprises a support part (21) with multiple evenly distributed through holes (22) on it, and the two sides of the support part (21) are provided with extension arms (23), and the end of each extension arm (23) is provided with a side support (24), and the end of the side support (24) is further provided with a side groove (25). The two sides of the extension arm (23) are provided with rectangular or trapezoidal notches, and the length of the notches is greater than the width of the lug (3), and the width of the notches is 1 / 10 of the width of the lower stop frame to 1 / 2 of the width of the lower stop frame.

2. The stopper frame according to claim 1, characterized in that: The upper stop frame (1) is in a long rectangular shape, and the upper stop frame (1) is provided with multiple buckle latches (11), and the four corners of the support part (21) are provided with buckle holes (26), and the side support (24) is also provided with a buckle hole (26), and the buckle hole (26) and the buckle latch (11) are one-to-one corresponding.

3. The stopper frame according to claim 2, characterized in that: The top of the support part (21) and the top of the side groove (25) are located on the same horizontal line.

4. The stopper frame according to claim 3, characterized in that: The bottom of the support part (21) and the bottom of the side support (24) are located on the same horizontal line.

5. The stopper frame according to claim 4, characterized in that: The height of the support part (21) is less than the distance between the battery cover plate (4) and the battery winding core (5), so as to limit the up and down vibration displacement of the battery winding core (5).

6. A multi-pole cell, characterized by: The battery cover plate (4) is provided with a battery winding core (5) inside, and the battery winding core (5) is provided with multiple lugs (3) inside, and the lugs (3) are fixed by the stop frame according to any one of claims 1-5.

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