Zinc-nickel battery adopting nickel-plated steel strip as positive electrode base material

Abstract

The utility model relates to a zinc-nickel battery adopting a nickel-plated steel strip as a positive electrode base material, which belongs to the technical field of zinc-nickel batteries and comprises a case, a plurality of partition plates are fixed on the inner bottom wall of the case, two main battery packs are placed in the case, a plurality of auxiliary battery packs are placed in the case, and the partition plates are fixed on the inner bottom wall of the case. The two main battery packs are provided with a series mechanism for connecting the battery packs in series, a cover plate is arranged above the case, and the case is provided with a sealing mechanism. According to the zinc-nickel battery adopting the nickel-plated steel strip as the positive base material, positive and negative tabs on the main battery pack and the auxiliary battery pack in the case can be respectively connected through the matching of the connecting plates, so that the main battery pack and the auxiliary battery pack can be connected in series, and the utilization rate of the zinc-nickel battery is improved; the nickel-plated steel strip is used as the material of the first positive tab and the second positive tab, so that the discharge time of the battery pack can be prolonged, and meanwhile, spot welding between the positive tab and the negative tab on the battery pack is firmer.

Description

Technical Field

[0001] The utility model relates to the technical field of zinc-nickel batteries, in particular to a zinc-nickel battery which adopts a nickel-plated steel strip as a positive electrode substrate. Background Art

[0002] Nickel-zinc battery is an alkaline battery whose positive electrode active material is mainly made of nickel and whose negative electrode active material is mainly made of zinc. Due to people's concern about environmental issues, nickel-zinc battery has considerable advantages as a clean energy source. Nickel-zinc battery has the advantages of high operating voltage, high energy density, good safety and low cost.

[0003] For example, a zinc-nickel battery is disclosed in the Chinese utility model patent publication number (CN201556677U), which includes a battery housing, a cap, an electrode group and an electrolyte, wherein the electrode group and the electrolyte are accommodated in a sealed battery housing, the upper part of the electrode group is connected to the cap, the electrode group includes a flexibly wound nickel positive electrode, a flexibly wound zinc negative electrode, and a composite diaphragm located in the nickel positive electrode and the zinc negative electrode; the upper end surface of the electrode group is formed with a flat negative electrode conductive end surface formed by the outer-inward bending edge of the zinc negative electrode extension section, and a barbed negative electrode current collector is crimped and welded thereon; The lower end face of the electrode group is formed with a flat positive conductive end face formed by the outer edge of the nickel positive electrode extension section bending from the outside to the inside, and a barbed positive current collector is crimped and welded on it; the outer surface of the electrode group is completely covered with an alkali-resistant insulating tape layer, and the alkali-resistant insulating tape layer is 0.5-50mm higher than the end face of the electrode group. This utility model solves the problem that the zinc negative electrode of the zinc-nickel battery will form a serious hydrogen evolution reaction when it contacts the iron metal, resulting in an increase in the internal pressure of the battery and a greater safety hazard. However, in this patent, multiple positive and negative electrodes cannot be connected in series, resulting in a low utilization rate of the battery, affecting practicality. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a zinc-nickel battery using nickel-plated steel strip as the positive electrode substrate, which has the advantage of improving the utilization rate of the zinc-nickel battery and solves the problem in the patent that multiple positive electrodes and negative electrodes cannot be connected in series, resulting in low battery utilization and affecting practicality.

[0005] To achieve the above object, the utility model provides the following technical solution: a zinc-nickel battery using a nickel-plated steel strip as a positive electrode substrate, comprising a chassis, a plurality of partitions are fixed to the inner bottom wall of the chassis, two main battery packs are placed inside the chassis, a plurality of secondary battery packs are placed inside the chassis, a series connection mechanism for connecting the battery packs in series is provided on the two main battery packs, a cover plate is provided above the chassis, and a closing mechanism is provided on the chassis;

[0006] The series mechanism includes a plurality of first positive ears, one ends of the plurality of first positive ears are fixed to the positive electrode in the main battery pack, a first negative ear is fixed to the negative electrode on each of the main battery packs, a second positive ear is fixed to the positive electrode of each of the auxiliary battery packs, a second negative ear is fixed to the negative electrode of each of the auxiliary battery packs, a connecting plate is fixed on the left and right sides of each of the partitions, the other end of the first negative ear on the left is fixed to one side of the connecting plate, and the other end of the second positive ear on the adjacent auxiliary battery pack is fixed to the right side of the connecting plate, so that except for the first positive ear of the left main battery pack and the first negative ear of the right main battery pack inside the chassis, the remaining positive and negative ears are connected in series in sequence through the connecting plate, and a connecting component is provided on the first positive ear.

[0007] Furthermore, the plurality of partitions are equidistantly distributed inside the chassis, and the front and rear sides of the partitions are respectively fixed to the front and rear inner walls of the chassis, and the number of the secondary battery packs is one less than the number of the partitions.

[0008] Furthermore, the number of the first positive electrodes on each of the main battery packs is equal to the number of the first negative electrodes, and the number of the second positive electrodes on each of the secondary battery packs is equal to the number of the second negative electrodes.

[0009] Furthermore, the connecting assembly includes a positive electrode plate, which is fixed to the lower surface of the cover plate, the other end of the first positive electrode ear on the main battery pack on the left side is fixed to the lower surface of the positive electrode plate, the upper surface of the positive electrode plate penetrates and extends to the upper side of the cover plate, and is fixed with a positive electrode column, and a negative electrode plate is fixed to the lower surface of the cover plate, and the other end of the first negative electrode ear on the main battery pack on the right side is fixed to the lower surface of the negative electrode plate, the upper surface of the negative electrode plate penetrates and extends to the upper side of the cover plate, and is fixed with a negative electrode column.

[0010] Furthermore, the positions of the positive pole and the negative pole on the cover plate are distributed diagonally.

[0011] Furthermore, the closing mechanism includes a positioning rod, one end of which is fixed to the upper surface of the chassis, a positioning hole is provided on the upper surface of the cover plate, a threaded groove is provided on the outer side of the top end of the positioning rod, a fastening nut is threadedly connected to the outer side of the threaded groove, and a sealing gasket is fixed to the lower surface of the cover plate.

[0012] Furthermore, there are four positioning rods, which are evenly distributed at the four corners of the upper surface of the chassis. The number of the positioning holes is equal to the number of the positioning rods, and the positions correspond one to one.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] 1. The zinc-nickel battery using nickel-plated steel strip as the positive electrode substrate can connect the positive and negative ears on the main battery pack and the auxiliary battery pack inside the chassis respectively through the cooperation of the connecting plate, so that the main battery pack and the auxiliary battery pack can be connected in series, so that the utilization rate of the zinc-nickel battery is improved. By using the nickel-plated steel strip as the material of the first positive electrode ear and the second positive electrode ear, the discharge time of the battery pack can be extended, and the spot welding between the positive and negative electrodes on the battery pack can be more firm.

[0015] 2. The zinc-nickel battery using nickel-plated steel strip as the positive electrode substrate can position the closed position of the cover plate through the cooperation of the positioning rod and the positioning hole, thereby avoiding the cover plate from being installed displaced. Through the cooperation of the threaded groove and the fastening nut, after the cover plate is covered on the chassis, the fastening nut tightly fixes the cover plate and the chassis. Through the cooperation of the sealing gasket, the sealing inside the battery can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the serial mechanism of the utility model;

[0018] Figure 3 It is a schematic diagram of the closing mechanism of the utility model.

[0019] In the figure: 1 chassis, 2 partition, 3 main battery pack, 4 sub-battery pack, 5 series mechanism, 501 first positive ear, 502 first negative ear, 503 second positive ear, 504 second negative ear, 505 connecting plate, 506 positive plate, 507 positive pole, 508 negative plate, 509 negative pole, 6 cover plate, 7 closing mechanism, 701 positioning rod, 702 positioning hole, 703 threaded groove, 704 fastening nut, 705 sealing gasket. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1In this embodiment, a zinc-nickel battery using a nickel-plated steel strip as a positive electrode substrate includes a chassis 1, a plurality of partitions 2 are fixed to the inner bottom wall of the chassis 1, and the plurality of partitions 2 divide the interior of the chassis 1 into a plurality of different spaces so as to separate each battery pack separately. Two main battery packs 3 are placed inside the chassis 1, and a plurality of auxiliary battery packs 4 are placed inside the chassis 1. A series connection mechanism 5 for connecting the battery packs in series is provided on the two main battery packs 3 to improve the utilization rate of the battery and allow the battery to have a longer discharge time. A cover plate 6 is provided above the chassis 1, and a sealing mechanism 7 is provided on the chassis 1 to improve the sealing of the battery and prevent external factors from affecting the interior of the battery.

[0022] Among them, multiple partitions 2 are equidistantly distributed inside the chassis 1, and the front and rear sides of the partitions 2 are respectively fixed to the front and rear inner walls of the chassis 1. The number of auxiliary battery packs 4 is one less than the number of partitions 2, so as to separate the main battery pack 3 and the auxiliary battery pack 4 separately. The two main battery packs 3 are respectively located on the leftmost and rightmost sides of the chassis 1.

[0023] See also Figure 2 In order to improve the utilization rate of the battery and make the battery have a longer discharge time, the series connection mechanism 5 in this embodiment includes a plurality of first positive pole ears 501, one end of each of the plurality of first positive pole ears 501 is fixed to the positive pole in the main battery pack 3, the negative pole on each main battery pack 3 is fixed with a first negative pole ear 502, the positive pole of each auxiliary battery pack 4 is fixed with a second positive pole ear 503, the first positive pole ear 501 and the second positive pole ear 503 are both nickel-plated steel strips, which can extend the discharge time of the battery pack and make the spot welding of the battery more firm, and the negative pole of each auxiliary battery pack 4 is fixed with a second negative pole ear 5 04, connecting plates 505 are fixed on the left and right sides of each partition 2, the other end of the first negative ear 502 on the left is fixed to one side of the connecting plate 505, and the other end of the second positive ear 503 on the adjacent auxiliary battery pack 4 is fixed to the right side of the connecting plate 505, so that except for the first positive ear 501 of the left main battery pack 3 and the first negative ear 502 of the right main battery pack 3 inside the chassis 1, the remaining positive and negative ears are connected in series in sequence through the connecting plate 505, so that the main battery packs 3 and auxiliary battery packs 4 inside the chassis 1 can be connected in series together, and a connecting component is set on the first positive ear 501.

[0024] In this example, the number of first positive ears 501 on each main battery group 3 is equal to the number of first negative ears 502, the number of second positive ears 503 on each secondary battery group 4 is equal to the number of second negative ears 504, and the number of first positive ears 501 on the main battery group 3 is equal to the number of second positive ears 503 on the secondary battery group 4, so that the positive and negative electrodes on the main battery group 3 and the secondary battery group 4 can be connected one by one.

[0025] It should be noted that the connecting assembly includes a positive plate 506, which is fixed to the lower surface of the cover plate 6, the other end of the first positive ear 501 on the left main battery pack 3 is fixed to the lower surface of the positive plate 506, the upper surface of the positive plate 506 passes through and extends to the upper side of the cover plate 6, and is fixed with a positive electrode column 507, and a negative plate 508 is fixed to the lower surface of the cover plate 6, the other end of the first negative ear 502 on the right main battery pack 3 is fixed to the lower surface of the negative plate 508, the upper surface of the negative plate 508 passes through and extends to the upper side of the cover plate 6, and is fixed with a negative electrode column 509, and the positions of the positive electrode column 507 and the negative electrode column 509 on the cover plate 6 are diagonally distributed, so that the circuit of the external device can be connected to the battery, so that the external device is connected in series with the main battery pack 3 and the auxiliary battery pack 4.

[0026] See also Figure 3 In order to improve the sealing of the battery and prevent external factors from affecting the inside of the battery, the sealing mechanism 7 in this embodiment includes a positioning rod 701, one end of which is fixed to the upper surface of the chassis 1, and a positioning hole 702 is provided on the upper surface of the cover plate 6. The positioning hole 702 on the cover plate 6 is aligned with the positioning rod 701, and the positioning rod 701 is inserted into the positioning hole 702, so that the sealing position of the cover plate 6 is fixed to prevent the position of the cover plate 6 from being offset. A threaded groove 703 is provided on the outer side of the top of the positioning rod 701, and a fastening nut 704 is threadedly connected to the outer side of the threaded groove 703. After the cover plate 6 is covered, the fastening nut 704 is threadedly connected to the threaded groove 703 on the outer side of the positioning rod 701, so that the cover plate 6 and the chassis 1 are fixed, thereby completing the sealing of the chassis 1. A sealing gasket 705 is fixed on the lower surface of the cover plate 6, and the sealing gasket 705 can improve the sealing between the cover plate 6 and the chassis 1 to prevent external factors from affecting the inside of the battery.

[0027] In this example, there are four positioning rods 701 evenly distributed at the four corners of the upper surface of the chassis 1. The number of positioning holes 702 is equal to the number of positioning rods 701, and the positions correspond one to one to prevent the installation position of the cover plate 6 from being offset.

[0028] The working principle of the above embodiment is:

[0029] (1) First, the main battery pack 3 and the auxiliary battery pack 4 are placed in the respective spaces separated by the partition 2, and then the first negative electrode ear 502 of the left main battery pack 3 and the first positive electrode ear 501 of the right main battery pack 3 as well as the second positive electrode ear 503 and the second negative electrode ear 504 of the auxiliary battery pack 4 are respectively connected to the two sides of each connecting plate 505, and then the first positive electrode ear 501 of the left main battery pack 3 is connected to the positive plate 506, and the first negative electrode ear 502 of the right main battery pack 3 is connected to the negative plate 508, and then the external circuit is connected to the positive electrode column 507 and the negative electrode column 509 respectively, so that the external device is connected in series with the main battery pack 3 and the auxiliary battery pack 4, thereby improving the utilization rate of the battery. Using nickel-plated steel strip as the material of the first positive electrode ear 501 and the second positive electrode ear 503 can extend the discharge time of the battery pack and make the spot welding of the battery more firm.

[0030] (2) After the batteries are connected in series, align the positioning hole 702 on the cover plate 6 with the positioning rod 701, and insert the positioning rod 701 into the positioning hole 702 to fix the cover plate 6 in a closed position to prevent the position of the cover plate 6 from shifting. After the cover plate 6 is closed, the fastening nut 704 is threadedly connected with the thread groove 703 on the outer side of the positioning rod 701 to fix the cover plate 6 and the chassis 1, thereby completing the closure of the chassis 1. The sealing gasket 705 on the cover plate 6 can improve the sealing between the cover plate 6 and the chassis 1 to prevent external factors from affecting the inside of the battery.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0032] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A zinc-nickel battery using a nickel-plated steel strip as a positive electrode substrate, comprising a chassis (1), characterized in that: A plurality of partitions (2) are fixed to the inner bottom wall of the chassis (1), two main battery packs (3) are placed inside the chassis (1), a plurality of auxiliary battery packs (4) are placed inside the chassis (1), a series connection mechanism (5) for connecting the battery packs in series is provided on the two main battery packs (3), a cover plate (6) is provided above the chassis (1), and a closing mechanism (7) is provided on the chassis (1); The series connection mechanism (5) comprises a plurality of first positive pole ears (501), one end of each of the plurality of first positive pole ears (501) is fixed to the positive pole in the main battery group (3), a first negative pole ear (502) is fixed to the negative pole on each of the main battery groups (3), a second positive pole ear (503) is fixed to the positive pole of each of the auxiliary battery groups (4), a second negative pole ear (504) is fixed to the negative pole of each of the auxiliary battery groups (4), and a connecting plate (505) is fixed to the left and right sides of each of the partitions (2). The other end of the first negative electrode ear (502) on the side is fixed to one side of the connecting plate (505), and the other end of the second positive electrode ear (503) on the adjacent auxiliary battery pack (4) is fixed to the right side of the connecting plate (505), so that inside the chassis (1), except for the first positive electrode ear (501) of the left main battery pack (3) and the first negative electrode ear (502) of the right main battery pack (3), the remaining positive and negative electrode ears are connected in series in sequence through the connecting plate (505), and the first positive electrode ear (501) is provided with a connecting assembly.

2. A zinc-nickel battery using nickel-plated steel strip as a positive electrode substrate according to claim 1, characterized in that: The plurality of partitions (2) are equidistantly distributed inside the chassis (1), and the front and rear sides of the partitions (2) are respectively fixed to the front and rear inner walls of the chassis (1), and the number of the secondary battery packs (4) is one less than the number of the partitions (2).

3. The zinc-nickel battery using nickel-plated steel strip as the positive electrode substrate according to claim 1, characterized in that: The number of the first positive electrodes (501) and the number of the first negative electrodes (502) on each of the main battery packs (3) are equal, and the number of the second positive electrodes (503) and the number of the second negative electrodes (504) on each of the secondary battery packs (4) are equal.

4. A zinc-nickel battery using nickel-plated steel strip as a positive electrode substrate according to claim 1, characterized in that: The connection assembly comprises a positive electrode plate (506), the positive electrode plate (506) is fixed to the lower surface of the cover plate (6), the other end of the first positive electrode ear (501) on the left main battery group (3) is fixed to the lower surface of the positive electrode plate (506), the upper surface of the positive electrode plate (506) penetrates and extends to the upper side of the cover plate (6), and is fixed with a positive electrode column (507), the lower surface of the cover plate (6) is fixed with a negative electrode plate (508), and the other end of the first negative electrode ear (502) on the right main battery group (3) is fixed to the lower surface of the negative electrode plate (508), the upper surface of the negative electrode plate (508) penetrates and extends to the upper side of the cover plate (6), and is fixed with a negative electrode column (509).

5. A zinc-nickel battery using nickel-plated steel strip as a positive electrode substrate according to claim 4, characterized in that: The positions of the positive electrode column (507) and the negative electrode column (509) on the cover plate (6) are distributed diagonally.

6. A zinc-nickel battery using nickel-plated steel strip as a positive electrode substrate according to claim 1, characterized in that: The sealing mechanism (7) comprises a positioning rod (701), one end of which is fixed to the upper surface of the chassis (1); a positioning hole (702) is provided on the upper surface of the cover plate (6); a thread groove (703) is provided on the outer side of the top end of the positioning rod (701); a fastening nut (704) is threadedly connected to the outer side of the thread groove (703); and a sealing gasket (705) is fixed to the lower surface of the cover plate (6).

7. A zinc-nickel battery using nickel-plated steel strip as a positive electrode substrate according to claim 6, characterized in that: The number of the positioning rods (701) is four and they are evenly distributed at the four corners of the upper surface of the chassis (1); the number of the positioning holes (702) is equal to the number of the positioning rods (701), and the positions correspond one to one.

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