CN210837927U

CN210837927U - Lead-acid storage battery saddle and lead-acid storage battery

Info

Publication number: CN210837927U
Application number: CN201920997526.XU
Authority: CN
Inventors: 陈冬; 黄冬艳; 相佳媛; 唐明跃; 倪丹; 丁一; 王德力; 王德金
Original assignee: Shanghai Nuclear Engineering Research and Design Institute Co Ltd; Zhejiang Narada Power Source Co Ltd
Current assignee: Shanghai Nuclear Engineering Research and Design Institute Co Ltd; Zhejiang Narada Power Source Co Ltd
Priority date: 2019-06-28
Filing date: 2019-06-28
Publication date: 2020-06-23
Anticipated expiration: 2029-06-28

Abstract

The utility model provides a lead acid battery saddle and lead acid battery, lead acid battery saddle include flat board, porous electrolyte adsorbed layer and support. The flat plate is provided with a liquid leakage hole for the circulation of electrolyte; the porous electrolyte adsorption layer is used for adsorbing electrolyte; the support is arranged on one side of the flat plate and used for supporting the flat plate, and the support is arranged in the porous electrolyte adsorption layer. The lead-acid battery comprises any of the above-described saddle for lead-acid batteries, and further comprises a battery well and a battery cluster, the saddle for lead-acid batteries being located between the battery cluster and the bottom of the battery well.

Description

Lead-acid storage battery saddle and lead-acid storage battery

Technical Field

The utility model relates to a lead acid battery technical field, more specifically relate to a lead acid battery saddle and lead acid battery.

Background

The lead-acid storage battery has the advantages of low price, high reliability, mature technology and the like, and is widely applied to the fields of backup, energy storage and the like. However, as the battery ages, the positive grid of a lead acid battery corrodes, which can cause the positive grid to stretch, which tends to cause the positive plate to contact the negative bus bar and short the battery. Therefore, a certain grid elongation space is left properly at the time of battery design.

The prior art generally adopts a method of increasing the distance between the positive grid and the bus bar or padding a saddle with elasticity at the bottom of the pole group. However, increasing the distance between the positive grid and the busbar tends to increase corrosion of the negative busbar of the battery. And the method of padding the flexible saddle at the bottom is adopted, the pressure and the compression amount are in a linear relation generally, and the selected material has the problem that the compression amount is smaller in the whole life cycle because the deformation pressure is too small and the deformation pressure is too large and is flattened by the self weight of the polar group.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome prior art's at least one not enough, provide a lead acid battery saddle and lead acid battery to provide the extension space when positive plate bars increase, prevent the battery short circuit, simultaneously, can store electrolyte, for the battery replenishment electrolyte of long-time use, prolong battery life.

In order to achieve the purpose, the utility model provides a lead-acid storage battery saddle, including flat board, porous electrolyte adsorbed layer and support. The flat plate is provided with a liquid leakage hole for the circulation of electrolyte; the porous electrolyte adsorption layer is used for adsorbing electrolyte; the support is arranged on one side of the flat plate and used for supporting the flat plate, and the support is arranged in the porous electrolyte adsorption layer.

Optionally, the weep holes and the support are arranged in a staggered manner, the support comprises at least two supporting legs, the at least two supporting legs are intersected at the connecting point, and the included angle between the central axis of each supporting leg and the plane where the flat plate is located ranges from 30 degrees to 60 degrees.

Optionally, the weep holes and the support are arranged in a staggered manner, the support comprises at least two supporting legs and supporting portions, each supporting leg is intersected with each supporting portion, and the included angle between the central axis of each supporting leg and the plane where the flat plate is located ranges from 30 degrees to 60 degrees.

Optionally, the liquid leaking holes are long-strip-shaped on the plane where the flat plate is located, the liquid leaking holes are multiple, and all the liquid leaking holes are arranged in parallel or close to parallel.

Optionally, each liquid leaking hole is formed by at least two opposite liquid leaking side walls, a plurality of small liquid leaking holes are formed in each liquid leaking side wall, and each liquid leaking hole is funnel-shaped.

Optionally, the liquid leaking hole is in the shape of any one or a combination of a plurality of annular, circular, triangular, square, oval and polygons with more than four sides on the plane of the flat plate.

Optionally, the porosity of the porous electrolyte adsorption layer ranges from 60% to 99%.

Optionally, the bracket is made of any one or more of polyethylene, polypropylene, polyvinyl chloride, polystyrene, ABS, polyamide, polycarbonate, polytetrafluoroethylene, phenolic resin and epoxy resin, and the porous electrolyte adsorption layer is made of any one or more of glass fiber, polyurethane and polytetrafluoroethylene.

Optionally, the thickness range of the flat plate is 1 mm-3 mm, the aperture range of the weep hole is 5 mm-10 mm, the thickness range of the supporting leg is 1 mm-3 mm, and the length range of the supporting leg is 5 mm-20 mm.

The utility model also provides a lead-acid storage battery, including as above wantonly lead-acid storage battery saddle, lead-acid storage battery still includes battery jar and battery cluster, and the lead-acid storage battery saddle is located between the bottom of battery cluster and battery jar.

To sum up, the utility model provides a lead acid battery, electrolyte see through in the porous electrolyte adsorbed layer of flow direction behind the weeping hole, because the porous electrolyte adsorbed layer has porous structure, the electrolyte can adsorb and store downtheholely at the electrolyte adsorbed layer. Along with the increase of the aging time, the positive grid is corroded and elongated, so that the saddle is contracted, and the electrolyte is released from the porous electrolyte adsorption material by the extrusion of stress, so that the water loss of the battery can be effectively supplemented, and the service life of the battery is prolonged. Moreover, the support provides the supporting role for whole lead-acid storage battery saddle, prevents that the saddle from taking place the deformation, provides the space for the extension of electrode plate.

Drawings

Fig. 1 is a side view of a saddle for a lead-acid battery according to a first embodiment of the present invention;

fig. 2 is a bottom view of a saddle of a lead-acid storage battery according to a first embodiment of the present invention;

fig. 3 is a graph of the amount of contraction and the pressure change of a saddle of a lead-acid battery provided by various embodiments of the present invention;

fig. 4 is a graph illustrating a float charge durability test at 60 ℃ for a lead-acid battery according to various embodiments of the present invention;

fig. 5 is a schematic structural view of another bracket according to the present invention;

fig. 6 is a bottom view of another lead acid battery saddle according to the present invention.

Detailed Description

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

The plane of the middle flat plate of the utility model refers to the plane of the contact surface of the flat plate and the bracket.

Example one

Please refer to fig. 1 to 2. The utility model provides a lead acid battery saddle A, including dull and stereotyped 1, porous electrolyte adsorbed layer 4 and support 3. The flat plate 1 is provided with a liquid leakage hole 2 for the circulation of electrolyte; the porous electrolyte adsorption layer 4 is used for adsorbing electrolyte; the support 3 is arranged on one side of the flat plate 1 and used for supporting the flat plate 1, and the support 3 is arranged in the porous electrolyte adsorption layer 4.

The utility model also provides a lead acid battery, including as above wantonly lead acid battery saddle, lead acid battery still includes battery jar 5 and battery cluster, and the lead acid battery saddle is located between battery cluster and battery jar 5's bottom.

In lead acid battery's use, in electrolyte flows to porous electrolyte adsorbed layer 4 after permeating weeping hole 2, because porous electrolyte adsorbed layer 4 has porous structure, the electrolyte can adsorb and store in the downthehole of electrolyte adsorbed layer 4. Along with the increase of the aging time, the positive grid is corroded and elongated, so that the saddle is contracted, and the electrolyte is released from the porous electrolyte adsorption material by the extrusion of stress, so that the water loss of the battery can be effectively supplemented, and the service life of the battery is prolonged. Moreover, the support 3 provides a supporting function for the whole lead-acid storage battery saddle, prevents the saddle from deforming, and provides a space for the extension of the electrode plate.

As shown in fig. 1 and 2, the utility model discloses a support 3 and weeping hole 2 are crisscross arranges, and support 3 includes two supporting legs 31, and two supporting legs 31 are 180 settings, and two supporting legs 31 all intersect in the tie point, and two supporting legs 31 support two relative directions. In the actual setting process, the directions of the supporting feet 31 of the adjacent brackets 3 can be perpendicular to each other, for example, the supporting feet 31 of the first bracket 3 are placed left and right, and the adjacent supporting feet 31 of the first bracket 3 are placed front and back, so that the whole saddle has higher stability. In other embodiments, the support 3 may further include any more than two or more supporting feet 31, for example, three supporting feet 31, which are disposed at 120 ° to each other, and the three supporting feet 31 provide all-directional stability for the whole saddle.

In other embodiments, as shown in fig. 5, the bracket 3 may further include at least two supporting feet 31 and a supporting portion 32, the supporting portion 32 is used to connect with the flat plate 1 and the supporting feet 31, respectively, and each supporting foot 31 intersects with the supporting portion 32. The electrolyte has poor fluidity near the intersection of the support leg 31 and the support portion 32. The intersection points of the supporting legs 31 and the supporting parts 32 are not overlapped, and the included angles of the supporting legs 31 and the supporting parts 32 are staggered, so that the flowing of electrolyte is facilitated.

In this embodiment, the support 3 is a bar-shaped structure, and provides a space for the porous electrolyte adsorption layer 4 on the premise of ensuring a good supporting effect. However, in other embodiments, the support 3 may also be a planar distribution or a block structure, for example, the supporting leg 31 may also be conical, and the supporting leg 31 has a conical surface, which provides better stability.

In the embodiment, the frame 3 is made of polyacrylic acid, but in other embodiments, the frame 3 may be made of any one or more plastic materials such as polyethylene, polypropylene, polyvinyl chloride, polystyrene, ABS, polyamide, polycarbonate, polytetrafluoroethylene, phenolic resin, and epoxy resin. The support 3 is made of plastic, so that the support 3 has good insulating property and cannot react with electrolyte on the premise of ensuring that the support has certain hardness and can support a battery cluster. In the present embodiment, the porous electrolyte adsorption layer 4 is made of glass fiber. However, in other embodiments, the porous electrolyte adsorption layer 4 may be made of any one or more of glass fiber, polyurethane, and polytetrafluoroethylene.

In this embodiment, the flat plate 1 is a flat plate structure, but in other embodiments, the flat plate 1 may also be formed by splicing a plurality of small flat plates, a V-shaped groove is spliced among the plurality of small flat plates, the bracket 3 is connected with the high end of the V-shaped groove, and the liquid leakage hole 2 is arranged at the low end of the V-shaped groove. The flat plate 1 with the V-shaped groove can also be integrally formed.

In the embodiment, the liquid leaking holes 2 are elongated on the plane of the plate 1, the liquid leaking holes 2 are provided with a plurality of liquid leaking holes, and all the liquid leaking holes 2 are arranged in parallel or nearly in parallel. Furthermore, each weep hole 2 is formed by at least two opposite weep side walls 21, each weep side wall 21 is provided with a plurality of weep holes, and the weep holes 2 are funnel-shaped.

In other embodiments, the weep holes 2 are in the plane of the flat plate 1 and are in the shape of any one or a combination of a plurality of circles, triangles, squares, ellipses and polygons with more than four sides. As shown in FIG. 6, the weep holes 2 are annular on the plane of the flat plate 1, and the brackets 3 and the weep holes 2 are arranged in a staggered manner.

In this embodiment, the porosity of the porous electrolyte adsorption layer 4 ranges from 60% to 99%.

The manufacturing method of the lead-acid storage battery saddle in the embodiment comprises the following steps of preparing a support 3 with the size of 160mm × 130mm by using a polypropylene material, enabling the thicknesses of the support 3 and support legs 31 to be 1.5mm and 1mm respectively, enabling the length of each support leg 31 to be 15mm, enabling the aperture of a liquid leakage hole 2 to be 5mm, enabling the included angle between the central axis of each support leg 31 and the plane where a flat plate 1 is located to be 45 ℃, after the plastic support 3 is prepared, filling glass fibers into a gap at the bottom of the plastic support 3, cutting and pressing to form, and obtaining the saddle A for the lead-acid storage battery with the model 2V500 Ah.

In other embodiments, the thickness of the plate 1 may be 1mm or 3mm or 2mm or any other value within the scope of the claims, and the diameter of the weep holes 2 may be 5mm or 10mm or 6mm or 7mm or 8mm or 9mm or any other value within the scope of the claims. The thickness of the supporting feet 31 may be 1mm or 3mm or 2mm or any other value within the scope of the claims, and the length of the supporting feet 31 may be 5mm or 20mm or 10mm or 15mm or any other value within the scope of the claims. These values are set according to the size of the lead-acid battery cell casing 5.

Example two

The shape and the structure of the bracket 3 in the second embodiment are the same as those of the first embodiment, the same structure is provided with the same reference numerals, and only the difference is described below.A bracket 3 with the size of 160mm × 130mm is prepared by using a polyvinyl chloride material, the thicknesses of the bracket 3 and the supporting feet 31 are respectively 2mm and 1.5mm, the length of the supporting feet 31 is 15mm, the included angle between the central axis of each supporting foot 31 and the plane of the flat plate 1 is 45 ℃, and after the bracket 3 is prepared, a porous polyurethane material is filled in the gap at the bottom of the plastic bracket 3 to obtain a saddle B for a lead-acid battery with the model 2V500 Ah.

Comparative examples

The saddle C for the lead-acid battery with the size of 160mm × 130mm × 10mm is prepared by adopting the conventional polyurethane material for comparison;

the change curves of the sizes of the saddles in the first embodiment, the second embodiment and the comparative embodiment are respectively tested (as shown in fig. 3), and it can be seen that the common saddle C has been subjected to repeated deformation under the pressure of less than 500N, namely the common saddle has been subjected to serious deformation under the action of the gravity of a polar group and cannot play a role in providing an extension space in a life cycle, while the saddle A in the first embodiment and the saddle B in the first embodiment are subjected to extension and contraction of only 2mm under the action of 800N, and can still be subjected to extension and contraction of about 5mm at the later stage of 800-1500N, which means that the saddles A and B can provide more extension spaces in the use process of the battery.

Thirdly, further placing the three saddles at the bottom of a 2V500Ah battery, and pouring acid liquor to form a battery A, a battery B and a battery C; the battery is subjected to a 60 ℃ durability test (as shown in figure 4) according to the requirements of national standard GB/T19638.1-2014, so that the battery C of the common saddle is prevented from falling below 80 percent of rated capacity after being cycled for only 9 times; the batteries A and B with the saddle can reach 12 times and 13 times respectively, and the high-temperature floating charge service life is obviously prolonged, because a large amount of electrolyte is stored in the saddle, the positive plate grid is corroded and elongated along with the aging time, so that the saddle is contracted, and the electrolyte is released from the porous electrolyte adsorption material by the stressed extrusion, so that the water loss of the batteries can be effectively supplemented, and the service life of the batteries is prolonged.

It will be understood by those skilled in the art that in the present disclosure, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships that are based on those shown in the drawings, which are merely for convenience in describing the present invention and to simplify the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus the terms should not be construed as limiting the invention.

Although the present invention has been described with reference to the preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but is capable of other modifications and variations without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A saddle for a lead-acid battery, comprising:

a flat plate having a weep hole through which an electrolyte flows;

a porous electrolyte adsorption layer for adsorbing an electrolyte; and

the support is arranged on one side of the flat plate and used for supporting the flat plate, and the support is arranged in the porous electrolyte adsorption layer.

2. The saddle for lead-acid batteries according to claim 1, wherein said weep holes and said support are staggered, said support comprising at least two support legs, said at least two support legs intersecting at a connection point, the angle between the central axis of each support leg and the plane of said flat plate being in the range of 30 ° to 60 °.

3. The saddle for lead-acid storage batteries according to claim 1, wherein said weep holes and said support are staggered, the support comprises at least two support legs and a support portion, each support leg intersects said support portion, and the angle between the central axis of each support leg and the plane of said flat plate is in the range of 30 ° to 60 °.

4. A saddle for a lead-acid battery according to any of claims 1 to 3, wherein said weep holes are elongated in the plane of said plate, said weep holes having a plurality of weep holes, all of which are arranged parallel or nearly parallel to each other.

5. The saddle for a lead-acid battery according to claim 4, wherein each weep hole is formed by at least two opposing weep sidewalls, each weep sidewall having a plurality of weep holes therein, said weep holes being funnel-shaped.

6. The saddle for lead-acid storage batteries according to any one of claims 1 to 3, wherein said weep holes are in the plane of said flat plate in the form of any one or a combination of rings, circles, triangles, squares, ovals and polygons having more than four sides.

7. The saddle for a lead-acid battery according to claim 1, wherein said porous electrolyte adsorbent layer has a porosity ranging between 60% and 99%.

8. The saddle for a lead-acid storage battery according to claim 1, wherein said plate has a thickness in the range of 1mm to 3mm and said weep hole has a hole diameter in the range of 5mm to 10 mm.

9. A lead-acid battery comprising the saddle of any of claims 1 to 8, further comprising a battery well and a battery cluster, the saddle of lead-acid battery being located between the battery cluster and a bottom of the battery well.