Lead grid plate for power storage battery
Technical Field
The invention belongs to the technical field of lead storage battery accessories, and particularly relates to a lead grid plate for a power storage battery.
Background
The electricity storage plate is an important part of the storage battery and consists of a lead grid plate and an active substance, and the lead grid plate mainly plays a role in supporting the active substance and conducting current. The lead grid plate is mainly in a grid shape consisting of collection strips, outer frame strips, inner frame transverse strips and inner frame vertical strips. The grid plate is coated with active material, and the electricity storage plate is a single battery composed of positive and negative electricity storage plates and a partition plate. A process of expansion and contraction of the active material during charge and discharge. During the charging process, lead sulfate in the positive electricity storage plate is converted into lead dioxide and the like, lead sulfate in the negative electricity storage plate is converted into lead and the like, and the active substances are in a shrinkage state at the stage. On the contrary, during the discharging process, the lead dioxide in the positive electricity storage plate is converted into lead sulfate and the like, and the lead in the negative electricity storage plate is converted into lead sulfate and the like, and the active substance is in an expansion state at the stage. Because the upper and lower assembly pressure of the electricity storage plate is different, the upper and lower parts are large, and the upper and lower utilization rates of the battery electricity storage plate are different, the reason of the large and small upper and lower parts leads to salinization of the lower electrode plate of the electricity storage plate and the fact that the generated lead sulfate can not be reversed for a long time and is expanded continuously, the lower part of the electricity storage plate grows into a big belly, active substances are extruded to the side edge to overflow, the short circuit of the positive and negative electricity storage plates is caused, and the service life of the battery is shortened, therefore, the prior art is necessary to be improved to solve the technical problems.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a lead grid plate for a power storage battery, which solves the problems in the background art and avoids the problem of short circuit of a positive electrode storage plate and a negative electrode storage plate caused by extrusion and overflow of active substances to the side edges, so that the service life of the battery is shortened.
The invention is realized by the following technical scheme:
the utility model provides a power is plumbous grid plate for battery, is including compiling strip and outer frame strip, be connected with the outer frame strip on the busbar, the outer frame strip is the rectangle, be equipped with the inner frame strip in the outer frame strip, the inner frame strip includes inside casing horizontal bar and inside casing vertical retort, inside casing horizontal bar and inside casing vertical retort set up perpendicularly mutually, and fix respectively on the outer frame strip, the outer frame strip is kept away from it equally divides into a, b and c trisection area in proper order to compile a direction, inside casing horizontal bar and inside casing vertical retort are kept away from it reduces gradually to compile a direction, from the top down width.
The width of the outer frame strip is 1-3mm, the outer frame strip comprises an upper outer frame strip, a middle outer frame strip and a lower outer frame strip, and the widths of the upper outer frame strip, the middle outer frame strip and the lower outer frame strip are reduced in sequence.
The further improvement scheme of the invention is that the thickness of the inner frame transverse strips, the inner frame vertical strips and the gathering strips is the same and is 0.5-3 mm.
The invention has the further improvement that the inner frame horizontal bar in the equal-section area a is N, the inner frame bar in the equal-section area b is N +1, the inner frame bar in the equal-section area c is N +3, and N is a natural number.
The width of the inner frame horizontal bar in the equal area a is 1-3mm, the width of the inner frame horizontal bar in the equal area c is 0.5-2mm, and the joint of the inner frame horizontal bar and the outer frame horizontal bar in the equal area c is thickened by 0.5-1 mm.
In a further improvement of the present invention, the vertical bar of the inner frame in the equal-partition area a is M, the vertical bar of the inner frame in the equal-partition area b is M +2, and the vertical bar of the inner frame in the equal-partition area c is M +5, where M is a natural number.
The further improvement scheme of the invention is that the width of the inner frame vertical bar in the equal area a is 1.5-3mm, the width of the inner frame vertical bar in the equal area c is 0.5-2mm, and one inner vertical bar in the previous area is fixedly connected with two inner vertical bars in the next area at intervals of one bifurcation.
Compared with the prior art, the lead grid plate for the power storage battery has the following obvious advantages:
1. the utility model provides a lead grid plate for power storage battery, inside casing horizontal bar and inside casing vertical retort are kept away from collect the strip direction, and from the top down width reduces gradually, and the width of inside casing horizontal bar and inside casing vertical retort is rare lower density and arranges, has increased the regional active material's in lower part utilization ratio, reduces because of the lower part of the electricity storage board that the mechanism that swells many shrink leads to grows into "big belly", has avoided the active material to crowd the positive negative pole electricity storage board short circuit that overflows the cause to the side, leads to the problem that the battery life shortens.
2. The lead grid plate for power storage battery has c equal area with 0.5-1mm thick cross bar inside frame and outer frame, and this can increase the expansion counter-pulling force and avoid the growth of "belly" in the lower part of the electricity storing plate.
3. The width of an inner frame vertical bar in an a equal area is 1.5-3mm, the width of an inner frame vertical bar in a c equal area is 0.5-2mm, each inner vertical bar in the previous area is fixedly connected with two inner vertical bars in the next area at intervals, and the widths of the inner frame vertical bars from the a equal area to the b equal area to the c equal area gradually decrease and narrow, so that the collection of current is facilitated.
Drawings
The above features, technical features, advantages and modes for carrying out the invention are further described in the following with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of a lead grid plate for a power storage battery according to the present invention
In the figure, 1-collection bar, 2-outer frame bar, 3-inner frame horizontal bar, 4-inner frame vertical bar, 21-upper outer frame bar, 22-middle outer frame bar, 23-lower outer frame bar.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings.
Example 1
As shown in fig. 1, the embodiment provides a power battery uses plumbous grid plate, including compiling strip 1 and outer frame strip 2, be connected with outer frame strip 2 on the busbar 1, outer frame strip 2 is the rectangle, be equipped with inner frame strip in the outer frame strip 2, inner frame strip includes inside casing horizontal bar 3 and inside casing vertical retort 4, inside casing horizontal bar 3 and inside casing vertical retort 4 set up perpendicularly mutually, and fix respectively on outer frame strip 2, outer frame strip 2 keeps away from and compiles 1 orientation of strip and equant divide into a in proper order, b and c trisection area, inside casing horizontal bar 3 and inside casing vertical retort 4 keep away from and compile a orientation, from the top down width reduces gradually.
The width of the outer frame strip 2 is 1-3mm, the outer frame strip 2 comprises an upper outer frame strip 21, a middle outer frame strip 22 and a lower outer frame strip 23, and the widths of the upper outer frame strip 21, the middle outer frame strip 22 and the lower outer frame strip 22 are reduced in sequence.
The widths of the inner frame transverse strips 3 and the inner frame vertical strips 4 are arranged in a sparse-at-top-dense-at-bottom manner, so that the utilization rate of active substances in the lower region is increased, the phenomenon that the lower part of the electricity storage plate grows into a big belly due to the mechanism of more expansion and less contraction is reduced, and the problem that the service life of a battery is shortened due to the fact that the active substances are extruded to the side edges to overflow to cause short circuits of the positive and negative electricity storage plates is solved.
The inner frame transverse strips 3, the inner frame vertical strips 4 and the collecting strips 1 have the same thickness of 0.5-3mm, and the thickness is consistent, so that the internal stress of the grid plate is ensured to be consistent.
The inner frame horizontal bars 3 in the equal area of a are 4, the inner frame bars 3 in the equal area of b are 5, and the inner frame bars 3 in the equal area of c are 8.
The width of the inner frame horizontal strips 3 in the equal-section area a is 1-3mm, the width of the inner frame horizontal strips 3 in the equal-section area c is 0.5-2mm, and the connecting part of the inner frame horizontal strips 3 and the outer frame strips 2 in the equal-section area c is thickened by 0.5-1 mm.
c, the joint of the inner frame cross bar 3 and the outer frame bar 2 in the equal areas is thickened by 0.5-1mm, so that the expansion counter-tension at the joint can be increased, and the situation that the lower part of the electricity storage plate grows into a big belly can be further avoided.
The inner frame vertical bar 4 in the equal partition area a is 3, the inner frame vertical bar 4 in the equal partition area b is 5, and the inner frame vertical bar 4 in the equal partition area c is 8.
The width of the inner frame vertical bar 4 in the equal area a is 1.5-3mm, the width of the inner frame vertical bar 4 in the equal area c is 0.5-2mm, and one inner vertical bar 4 in the previous area is fixedly connected with two inner vertical bars 4 in the next area at intervals of one fork. The widths of the inner frame vertical bars 4 from the a equal division area to the b equal division area to the c equal division area are gradually reduced and narrowed, which is beneficial to the collection of current.
It is well within the skill of those in the art to implement, and not to be bound by any theory, the present invention is not limited to the specific details set forth in the specification.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.