CN110165135A - The side negative plate of a kind of battery and battery pinches tab method - Google Patents
The side negative plate of a kind of battery and battery pinches tab method Download PDFInfo
- Publication number
- CN110165135A CN110165135A CN201910465123.5A CN201910465123A CN110165135A CN 110165135 A CN110165135 A CN 110165135A CN 201910465123 A CN201910465123 A CN 201910465123A CN 110165135 A CN110165135 A CN 110165135A
- Authority
- CN
- China
- Prior art keywords
- tab
- negative plate
- battery
- side negative
- pinches
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D21/00—Combined processes according to methods covered by groups B21D1/00 - B21D19/00
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/06—Lead-acid accumulators
- H01M10/12—Construction or manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
- H01M50/54—Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges
- H01M50/541—Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges for lead-acid accumulators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The present invention relates to the side negative plates of a kind of battery and battery to pinch tab method, belongs to battery manufacturing technology field, solve the problems, such as in the prior art side negative plate pinch tab effect it is unstable, influence battery life.Side negative plate pinches tab method, comprising the following steps: step 1: selecting inflection point on side negative plate upper side frame top, the inflection point is with a certain distance from side negative plate upper side frame, and the tab of this section of distance is without horizontal-shift；Step 2: tab being bent at inflection point in step 1, the length on control bending angle and bending tab vertical direction；Step 3: opposite side negative plate electrode ear top is bent on the basis of step 2, controls the horizontal-shift distance of this section of tab, pinches tab completion.Battery includes shell and the battery electrode group for being set in the housing portion, and the tab of battery electrode group side negative plate is pinched into using the above method.The present invention improves side negative plate and pinches tab effect, extends the service life of battery.
Description
Technical field
The present invention relates to battery manufacturing fields, and in particular to the side negative plate of a kind of battery and battery pinches tab side
Method.
Background technique
With the implementation of lead-acid accumulator new national standard, improve battery specific energy become lead-acid accumulator industry one it is urgent
Task.
It is a kind of feasible raising battery specific energy scheme that wherein battery, which is changed to direct-connected welding by welding of passing a bridge, is both reduced
Busbar connector consumption of lead, and reduce busbar connector length, the internal resistance of cell reduces.But in the actual production process, after direct-connected cast welding
Battery semi-finished product glue seal during be easy to occur side negative plate climb glue the problem of, side negative plate active material utilization is significantly
It reduces, serious or even generation partition viscose glue；The ingredient of sealant, which is easy, and lead ion forms complex compound causes partition dendrite short
Road influences the service life of battery.
General use pinches tab by hand in actual production or tab is pinched in punching press, pinches tab by hand because employee pinches tab dynamics
Difference will lead to different influences.Pinch tab dynamics it is excessive when, being on the one hand easy to weigh partition wounded leads to partition dendrite short circuit, separately
On the one hand it be easy to cause cast welding to fall piece or false welding since side negative plate and adjacent negative plate are close together；When dynamics is too small, rise not
To ear effect is pinched, it is easy to climb glue；Existing electrode lug device of pinching is because pinching tab mould structure design defect and cylinder air pressure limitation, only
The energy negative plate electrode ear of opposite side is simply bent, and it is similar with tab is pinched by hand to pinch ear effect；Simultaneously because pole group with pinch tab mould
The fluctuation of distance between tool, side negative plate pinch the fluctuation of tab effect greatly, still remain the problem of side negative plate climbs glue.
Summary of the invention
In view of above-mentioned analysis, the present invention is intended to provide the side negative plate of a kind of battery and battery pinches tab method, solution
Side negative plate in the prior art of having determined pinches the problem of unstable tab effect, influence battery life.
The purpose of the present invention is mainly achieved through the following technical solutions:
On the one hand, the present invention provides a kind of side negative plates to pinch tab method, comprising the following steps:
Step 1: side negative plate upper side frame top select inflection point, the inflection point with a certain distance from side negative plate upper side frame,
The tab of this section of distance is without horizontal-shift；
Step 2: tab being bent at inflection point in step 1, control bending angle and bending tab are square vertically
Upward length；
Step 3: opposite side negative plate electrode ear top is bent on the basis of step 2, controls the horizontal-shift of this section of tab
Distance pinches tab completion.
On the basis of above scheme, the present invention has also done following improvement:
Further, in step 1, inflection point is from side negative plate upper side frame 1-3mm.
Further, in step 2, bending angle is 120 ° -140 °.
Further, in step 2, bending angle is 135 °.
Further, in step 2, bending the length on tab vertical direction is 4-4.5mm.
Further, in step 3, horizontal-shift distance 0.5-1mm.
Further, in step 2, bending the length on tab vertical direction is 4.5mm.
On the other hand, the present invention also provides a kind of batteries, including shell and the battery electrode group for being set in the housing portion, electricity
The tab of Chi Jiqun side negative plate is pinched into using the above method.
Further, battery electrode group includes positive plate, negative plate, anode ear, negative electrode lug and partition；
The quantity of positive plate and negative plate be it is multiple, multiple positive plates and multiple negative plates are arranged alternately, and positive and negative electrode
Partition is equipped between plate, the bottom of every two adjacent partition is connected to form U-shaped structure, and positive plate is coated in U-shaped structure；
The top edge of positive plate is equipped with anode ear, and the top edge of negative plate is equipped with negative electrode lug, and anode ear and cathode
Ear is multiple rows of；
The quantity of battery electrode group be it is multiple, tab between multiple battery electrode groups uses direct-connected cast-weld construction.
Further, partition is super-fine glass fiber board.
Compared with prior art, the present invention can at least realize one of following beneficial effect:
A) by control length of the side negative plate upper side frame top inflection point from side negative plate upper side frame, so that pole after the group's cast welding of pole
Ear will not only damage partition by pressure, but also be not in that side negative plate climbs glue.
B) by control bending angle, so that being neither easy generation cast welding after pinching tab falls piece or false welding, and will not
There is battery glue side negative plate of being honored as a queen and climbs glue.
C) by the length on control bending tab vertical direction, it can play and pinch tab effect and cast welding
Fall piece or false welding.
D) pass through controlled level offset distance length, it can be ensured that side negative plate tab is maximum with a distance from plastic housing baffle, simultaneously
It is unlikely to be close together with adjacent tab at the top of tab, glue can be climbed to avoid side negative plate and piece is fallen in cast welding.
E) tab negative bus-bar length after method processing of the invention can also be shortened suitably, reduce busbar connector
Consumption of lead and internal resistance.
F) side negative plate tab will not damage partition by pressure after method processing of the invention, be conducive to the service life for improving battery.
G) compared with the welding of existing gap bridge, battery of the invention is since the tab between multiple battery electrode groups is using straight
Continuous casting welding structure, busbar connector length is shorter, therefore the input and output effect of electric current is good, and electric current export resistance is lower, and high current is filled
Discharge capability significantly improves, and cryogenic property significantly improves, and extends the service life of battery.
H) present invention is by setting super-fine glass fiber board for the partition between positive plate and negative plate, and passes through optimization
The thickness of partition, the assembling pressure and uniform oxygen combined efficiency of pole group during ensure that circulating battery use process, simultaneously
It can be effectively reduced the lamination problem of electrolyte, and then can effectively extend battery.
Other features and advantages of the present invention will illustrate in the following description, also, partial become from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention can be by written explanation
Specifically noted structure is achieved and obtained in book, claims and attached drawing.
Detailed description of the invention
Attached drawing is only used for showing the purpose of specific embodiment, and is not to be construed as limiting the invention, in entire attached drawing
In, identical reference symbol indicates identical component.
Fig. 1 is the side negative plate tab effect picture pinched out using method provided by the invention；
Fig. 2 is the main view of the side negative plate tab pinched out using method provided by the invention；
Fig. 3 is the left view of the side negative plate tab pinched out using method provided by the invention；
Fig. 4 is the partial view in Fig. 3 at A；
Fig. 5 is the top view of the side negative plate tab pinched out using method provided by the invention；
Fig. 6 is the A-A direction view of Fig. 5；
Fig. 7 is that each pole group side negative plate of battery has pinched the effect intention after tab；
Fig. 8 is the partial view in Fig. 7 at B.
Appended drawing reference:
Length of the inflection point A- from side negative plate upper side frame；B- bends the length on tab vertical direction；It is perpendicular that C- bends tab
The upward length of histogram；D- horizontal-shift distance；A- bending angle.
Specific embodiment
Specifically describing the preferred embodiment of the present invention with reference to the accompanying drawing, wherein attached drawing constitutes the application a part, and
Together with embodiments of the present invention for illustrating the principle of the present invention.
An embodiment provides a kind of side negative plates to pinch tab method, as shown in Fig. 1 to Fig. 8 including following step
It is rapid:
Step 1: selecting inflection point in side negative plate upper side frame top specific position, the position is from side negative plate upper side frame length A
For 1-3mm, the tab of this section of distance is without horizontal-shift；
Step 2: tab being bent at inflection point in step 1, bending angle a range is 120 ° -140 °, bending
Length B on tab vertical direction is 4-4.5mm；
Step 3: opposite side negative plate electrode ear top is bent on the basis of step 2, the horizontal-shift distance D of this section of tab
Length is 0.5-1mm, and bending the length C on tab vertical direction is 6.5-7mm.
Compared with prior art, side negative plate provided in this embodiment pinches tab method, on the one hand it is possible to prevente effectively from battery
What glue was honored as a queen climbs glue problem, is on the other hand conducive to the service life for improving battery.
Specifically, the present invention is made by control length A of the side negative plate upper side frame top inflection point from side negative plate upper side frame
Tab will not only damage partition by pressure after obtaining pole group's cast welding, but also be not in that side negative plate climbs glue.Illustratively, A 1-3mm.It is normal raw
It produces situation lower clapboard and is generally higher by positive plate upper side frame 1-2mm, the tab meeting after pole group cast welding if inflection point too low (A < 1mm)
Damage partition by pressure, while tab root is easy to pinch bad and falls cream to influence battery life；If the excessively high pole (the A > 3mm) group in inflection point
Plastic housing baffle is close in cast welding back negative plate electrode eardrum portion, and battery glue side negative plate of being honored as a queen is easy to climb glue.And inflection point A 1-3mm then
Can be to avoid the above problem, cast welding effect is as shown in Figure 8.
If pinching after tab or being easy to happen cast welding in view of bending angle controls unreasonable and fall piece or false welding,
It will appear battery glue side negative plate of being honored as a queen and climb glue, therefore the present embodiment strict control bending angle a range is 120 ° -140 °.
Specifically, it pinches if bending angle too small (120 ° of a <) and is directly born against at the top of adjacent tab at the top of the negative plate electrode ear in tab back
Lower section is easy to happen cast welding and falls piece or false welding；Pinched if bending angle excessive (140 ° of a >) after tab tab from plastic housing every
Shelves are closer, and battery glue side negative plate of being honored as a queen is easy to climb glue.Preferred bending angle is 135 °.
It is worth noting that, in step 2, if the length B too small (B < 4mm) on bending tab vertical direction does not have
Pinch tab effect；Length B excessive (B > 5mm) on bending tab vertical direction then pinches the negative plate electrode ear in tab back almost and phase
Adjacent tab is close together, and is easy to happen cast welding and falls piece or false welding.Therefore, on the present embodiment control bending tab vertical direction
The range of length B be 4-4.5mm pinch tab effect and piece or void are fallen in cast welding so that can play after pinching tab
Dry joint connects.The length B bent on tab vertical direction is preferably 4.5mm, and cast welding effect is as shown in Figure 6.
If in view of the horizontal-shift distance D length of this section of tab it is too big or it is too small battery is adversely affected, because
This, the range that the present embodiment controls D is 0.5-1mm.Specifically, when the horizontal-shift distance of this section of tab is too big, tab is pinched
The negative plate electrode ear in back is almost close together with adjacent tab, is easy to happen cast welding and falls piece or false welding；The level of this section of tab
When offset distance is too small, does not have and pinch tab effect.And control the horizontal-shift distance of this section of tab for 0.5-1mm, it can be with
Ensure that side negative plate tab is maximum with a distance from plastic housing baffle, while being unlikely to be close together with adjacent tab at the top of tab, can keep away
Exempt from that side negative plate climbs glue and piece is fallen in cast welding.
Because the total length of side negative plate tab is certain, removing occupied tab length in step 1 and step 2 is to bend
Length C on tab vertical direction.
Tab mold can be pinched according to the production of the shape of lug bending is corresponding in actual production, cooperate punching press and determine
Position device continuously disposably can carry out pinching tab to adapt to continuous production to pole group's side negative plate.
Embodiment one
Step 1: it is that 1mm locates as inflection point on side negative plate upper side frame, from side negative plate upper side frame length, this section of distance
Tab is without horizontal-shift；
Step 2: tab being bent at inflection point in step 1, bending angle is 120 °, and bending tab is square vertically
Upward length B is 4mm；
Step 3: opposite side negative plate electrode ear top is bent on the basis of step 2, the horizontal-shift distance of this section of tab
For 0.5mm, tab completion is pinched.
Embodiment two
Step 1: it is that 3mm locates as inflection point on side negative plate upper side frame, from side negative plate upper side frame length, this section of distance
Tab is without horizontal-shift；
Step 2: tab being bent at inflection point in step 1, bending angle is 140 °, and bending tab is square vertically
Upward length B is 4.5mm；
Step 3: opposite side negative plate electrode ear top is bent on the basis of step 2, the horizontal-shift distance of this section of tab
For 1mm, tab completion is pinched.
Embodiment three
Step 1: it is that 2mm locates as inflection point on side negative plate upper side frame, from side negative plate upper side frame length, this section of distance
Tab is without horizontal-shift；
Step 2: tab being bent at inflection point in step 1, bending angle is 135 °, and bending tab is square vertically
Upward length B is 4.2mm；
Step 3: opposite side negative plate electrode ear top is bent on the basis of step 2, the horizontal-shift distance of this section of tab
For 0.8mm, tab completion is pinched.
Another embodiment of the invention discloses a kind of battery, including shell and the battery pole for being set in the housing portion
The tab of group, battery electrode group side negative plate are pinched into using the method for embodiment one to three.
Specifically, the battery electrode group of the present embodiment includes positive plate, negative plate, anode ear, negative electrode lug and partition；Anode
The quantity of plate and negative plate be it is multiple, multiple positive plates and multiple negative plates are arranged alternately, and between positive and negative pole plate be equipped with every
Plate, the bottom of every two adjacent partition are connected to form U-shaped structure, and positive plate is coated in U-shaped structure；Anode ear and negative electrode lug
The opposite end of pole group is set, and anode ear and negative electrode lug are multiple rows of.The quantity of the present embodiment battery electrode group be it is multiple, it is more
Tab between a battery electrode group uses direct-connected cast-weld construction.
The battery of the prior art is generally using welding of passing a bridge, and welding non-once molding of passing a bridge, and busbar connector is longer,
The tab of multiple battery electrode groups of the present embodiment battery uses direct-connected cast-weld construction, compared with welding of passing a bridge, direct-connected cast welding tool
Have the advantage that (1) battery cast welded one-pass molding, scrappage is low；(2) busbar connector length is shorter, and consumption lead amount is less, and internal resistance is more
Small, battery discharge current is bigger under equal conditions, and power is more powerful；(3) battery-end electrode column sealing is not necessarily to sealing ring, and terminal does not leak
Liquid.
It should be noted that the battery of the present embodiment, the partition between positive plate and negative plate is superfine glass fento
(AGM) plate is tieed up, and by the thickness of optimization partition, ensure that during circulating battery use process the assembling pressure of pole group and
Even oxygen combined efficiency, while can be effectively reduced the lamination problem of electrolyte, and then can effectively extend battery.
Illustratively, block board thickness 1.30-1.34mm.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of side negative plate pinches tab method, which comprises the following steps:
Step 1: selecting inflection point on side negative plate upper side frame top, the inflection point is with a certain distance from side negative plate upper side frame, the section
The tab of distance is without horizontal-shift；
Step 2: tab being bent at inflection point in step 1, on control bending angle and bending tab vertical direction
Length；
Step 3: opposite side negative plate electrode ear top is bent on the basis of step 2, controls the horizontal-shift distance of this section of tab,
Pinch tab completion.
2. side negative plate according to claim 1 pinches tab method, which is characterized in that in the step 1, inflection point is negative far from side
Plate upper side frame 1-3mm.
3. side negative plate according to claim 1 or 2 pinches tab method, which is characterized in that in the step 2, bending angle
It is 120 ° -140 °.
4. side negative plate according to claim 3 pinches tab method, which is characterized in that in the step 2, bending angle is
135°。
5. side negative plate according to claim 3 pinches tab method, which is characterized in that in the step 2, bending tab is vertical
Length on direction is 4-4.5mm.
6. side negative plate according to claim 3 pinches tab method, which is characterized in that in the step 3, horizontal-shift distance
For 0.5-1mm.
7. pinching tab method according to side negative plate described in claim 4-6, which is characterized in that in the step 2, bending tab is perpendicular
The upward length of histogram is 4.5mm.
8. a kind of battery, which is characterized in that including shell and the battery electrode group for being disposed in the housing portion, the battery electrode group
The tab of side negative plate is pinched into using the described in any item methods of claim 1-7.
9. battery according to claim 8, which is characterized in that the battery electrode group includes positive plate, negative plate, anode
Ear, negative electrode lug and partition；
The quantity of the positive plate and the negative plate be it is multiple, multiple positive plates and multiple negative plates are arranged alternately, and just,
Partition is equipped between negative plate, the bottom of every two adjacent partition is connected to form U-shaped structure, and positive plate is coated on U-shaped structure
It is interior；
The top edge of the positive plate is equipped with the anode ear, and the top edge of the negative plate is equipped with the negative electrode lug, and
Anode ear and negative electrode lug are multiple rows of；
The quantity of the battery electrode group be it is multiple, tab between multiple battery electrode groups uses direct-connected cast-weld construction.
10. battery according to claim 9, which is characterized in that the partition is super-fine glass fiber board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910465123.5A CN110165135B (en) | 2019-05-30 | 2019-05-30 | Storage battery and negative plate tab pinching method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910465123.5A CN110165135B (en) | 2019-05-30 | 2019-05-30 | Storage battery and negative plate tab pinching method thereof |
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| Publication Number | Publication Date |
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| CN110165135A true CN110165135A (en) | 2019-08-23 |
| CN110165135B CN110165135B (en) | 2022-02-01 |
Family
ID=67630667
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| CN201910465123.5A Active CN110165135B (en) | 2019-05-30 | 2019-05-30 | Storage battery and negative plate tab pinching method thereof |
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| Publication number | Publication date |
|---|---|
| CN110165135B (en) | 2022-02-01 |
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Address after: 313199 Pheasant Town Emerging Industrial Park, Changxing County, Huzhou City, Zhejiang Province Patentee after: Chaowei Power Group Co.,Ltd. Address before: 313199 Pheasant Town Emerging Industrial Park, Changxing County, Huzhou City, Zhejiang Province Patentee before: CHILWEE POWER Co.,Ltd. |