Self-cross-linking method for zinc-silver reserve battery

Abstract

The invention discloses a zinc-silver reserve battery self-crossover method in the technical field of zinc-silver reserve batteries, and the method comprises the steps: designing a battery pack composed of a plurality of monomers, setting the groove spacing of the adjacent monomers to be 3-4mm, and setting the working voltage of the monomer battery pack to be 270V; a heat shrink tube penetrates through the positive and negative electrode lugs of the single body, the heat shrink tube is shrunk through hot air heating, and a gap between a lug silver wire and a cover plate is sealed so as to prevent sealing glue from leaking; winding and tightening the positive electrode of one monomer and the negative electrode lead-out silver wire of the adjacent monomer into a bundle by using a special bridging tool for the monomers; and finally, the silver wires which are wound and tightened into bundles of adjacent monomers are fixed through conventional tin soldering. According to the method, the design is simplified, the use of bridging parts is reduced, the weight and the voltage loss of the whole battery pack are reduced, meanwhile, the short circuit risk caused by the small bridging distance of the single bodies is avoided, the process feasibility is improved, and the method is suitable for the zinc-silver reserve battery pack which is thin in single body size thickness, short in bridging distance and dense in single body arrangement.

Description

Technical Field

[0001] The invention relates to the technical field of zinc-silver reserve batteries, and in particular to a self-cross-connection method for zinc-silver reserve batteries. Background Art

[0002] Zinc-silver storage batteries have been widely used in aerospace and other fields due to their advantages such as stable discharge voltage, high specific energy, long working time and high safety. However, this type of battery faces some challenges in the design and manufacturing process, especially in the cross-connection technology between monomers.

[0003] The traditional zinc-silver reserve battery monomer jumper connection method usually uses sleeves, jumper plates, etc. to make electrical connections between monomers. This method is suitable for conventional battery packs with long jumper distances between monomers and ample space. However, in the actual development and manufacturing of zinc-silver reserve batteries, it is often encountered that the internal space is extremely limited, the battery cells are thin, the arrangement density is high, and the distance between the monomers is very close. In this case, if traditional jumper plates are continued to be used for connection, there will be a risk of contact between adjacent jumper plates, which may cause the battery pack to short-circuit, seriously affecting the safety and reliability of the battery pack.

[0004] Therefore, it is necessary to develop a new zinc-silver reserve battery cell cross-connection method to overcome the limitations of the traditional cross-connection method and avoid the short circuit problem caused by the small distance between cells. At the same time, it is necessary to simplify the design and assembly process of the battery pack, reduce production costs, and improve the process feasibility and overall performance of the battery pack. Summary of the invention

[0005] The present invention aims to provide a self-cross-connection method for zinc-silver reserve batteries, so as to solve the problem that the conventional jumper connection is adopted in the prior art, and the contact between two adjacent jumper plates easily causes a short circuit of the battery.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a self-cross-connection method of zinc-silver reserve battery, comprising the following steps:

[0007] S1. The battery pack is designed with multiple single cells connected in series, the working voltage is 270V, and the slot spacing between two adjacent cells is 3-4mm;

[0008] S2. Insert heat shrink tubing at the tabs of the positive and negative electrodes of the monomer, then cut the tabs to a suitable length. The lower end of the heat shrink tubing is heated by hot air and then shrinks to seal the gap between the tab silver wire and the cover plate to prevent the sealing glue from leaking onto the plate and affecting the battery performance.

[0009] S3, using a special jumper tool for monomers, the silver wires of the positive electrode of one monomer and the negative electrode of the adjacent monomer are twisted and tightened into a bundle;

[0010] S4. The adjacent monomers are wound and tightened into a bundle of silver wires and fixed using conventional soldering.

[0011] Furthermore, in step S1, the battery pack is designed with two groups of unit batteries connected in series for power supply, the two groups of unit batteries are stacked up and down, each group of unit batteries is designed with 96 cells, the working voltage is 270V, and the slot spacing between two adjacent cells is 4mm.

[0012] Furthermore, in the step S2, the lower end of the heat shrink tube is heated by hot air and shrinks to a point just large enough to fill the lead-out hole of the silver wire of the tab.

[0013] Furthermore, in the step S4, the monomer bridging tool twists the positive and negative electrodes of adjacent monomers twice and then welds them.

[0014] Furthermore, in step S1, the battery pack uses 18 cells connected in series, and the slot spacing between two adjacent cells is 3.0 mm.

[0015] Furthermore, in the step S2, the lower end of the heat shrink tube is heated by hot air and shrinks to just fill the gap between the positive and negative silver wire lead-out holes of the adjacent monomers.

[0016] Furthermore, in the step S3, the positive and negative lead silver wires of adjacent monomers are wound and tightened into a bundle, and the positive and negative lead silver wires of adjacent monomers are limited when being wound and tightened, and the monomers must not be pulled up and suspended in the air. After multiple silver wires are tightened into a bundle, a suitable trimming height is determined, and the excess silver wires on the top are cut off with pliers.

[0017] The beneficial effects of the present invention are as follows: 1. It solves the problem of battery cell jumpering with thin cell size, dense arrangement and small jumper straight line space, thereby avoiding the risk of short circuit caused by small distance between series-connected cells; 2. It simplifies the design and reduces the use of jumper components; 3. It reduces the weight and voltage loss of the entire battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a battery monomer jumper welding assembly diagram in a zinc-silver reserve battery self-cross-connection method of the present invention;

[0019] Figure 2 It is a structural schematic diagram of a monomer cross-connection tool in a self-cross-connection method of a zinc-silver reserve battery of the present invention;

[0020] Figure 3 This is a schematic diagram of the monomer cross-connection assembly of Example 1;

[0021] Figure 4 This is a schematic diagram of the monomer cross-connection assembly of Example 2. DETAILED DESCRIPTION

[0022] The following is further described in detail through specific implementation methods:

[0023] The reference numerals in the drawings of the specification include: heat shrink tube 1, cover plate 2, lead-out silver wire 3, monomer 4, tin-lead solder 5, dental glue 6, battery housing 7.

[0024] Example 1

[0025] Basically as attached Figure 1 , 2 3: A self-cross-connection method for zinc-silver storage batteries, comprising the following steps:

[0026] S1. The battery pack has a space of 158×113×101mm (Z×X×Y). The battery pack is designed with two groups of unit batteries in series for power supply. The two groups of unit batteries are stacked up and down. Each group of unit batteries is designed with 96 cells 4, the working voltage is 270V, and the distance between two adjacent cells 4 slots is 4mm. The schematic diagram of the jumper assembly of the cells 4 inside the battery pack is attached. Figure 3 .

[0027] S2. Insert the heat shrink tube 1 through the ear of the positive electrode of the cell 4, and then cut the ear to a suitable length. The lower end of the heat shrink tube 1 is heated by hot air and shrunk to just fill the hole of the cover plate 2. The "small at the bottom and large at the top" shape of the heat shrink tube 1 can block the hole of the cover plate 2 to prevent glue from leaking onto the plate and affecting the performance of the battery.

[0028] S3. Finally, use the monomer 4 jumper tool to wrap the positive and negative electrodes of the two monomers 4 twice and then weld them. See Figure 2 .

[0029] Figure 2 It includes a heat shrink tube-1, a cover plate-2, a lead-out silver wire-3, a monomer-4, a tin-lead solder-5, a tooth tray glue-6, and a battery shell-7.

[0030] After connection in this way, the distance between the two monomers 4 is increased from 2.0 mm in the traditional jumper connection to 4.0 mm, which prevents short circuit and improves work efficiency.

[0031] Example 2

[0032] Basically as attached Figure 1 , 2 4: A self-cross-connection method for zinc-silver storage batteries, comprising the following steps:

[0033] S1. The battery pack has a space of 100mm×100mm×102mm (Z×X×Y). It uses 18 4-cell series. The spacing between two adjacent 4-cell slots is 3.0mm. The schematic diagram of the 4-cell jumper assembly inside the battery pack is attached. Figure 4 ;

[0034] S2. Insert the heat shrink tube 1 at the ear of the positive electrode of the monomer 4. After the lower end of the heat shrink tube 1 is heated by hot air, it shrinks to just fill the gap between the positive and negative silver wire lead-out holes of the monomer 4. The heat shrink tube 1 can be blown into a "small bottom and large top" shape by a hot air blower to facilitate insertion into the silver wire lead-out hole of the cover plate 2 to prevent glue from leaking onto the plate. Determine the series connection mode of the monomer 4 and use the monomer 4 jumper tooling as shown in the attached figure. Figure 2 As shown, the positive and negative lead silver wires 3 of two adjacent monomers 4 are wound and tightened into a bundle. When the positive and negative lead silver wires 3 of the adjacent monomers 4 are wound and tightened, the position is limited, and the monomer 4 shall not be pulled up and suspended in the air. After the silver wires are tightened into a bundle, the appropriate trimming height is determined, and the excess silver wires on the top are cut off with pliers;

[0035] S3, the adjacent monomers 4 are wound and tightened into a bundle of silver wires and fixed using conventional soldering.

[0036] After connection in this way, the distance between the two monomers 4 is increased from 1.0 mm in the traditional jumper connection to 3.0 mm, which prevents short circuit and improves work efficiency.

[0037] The above is only an embodiment of the present invention, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A method for self-cross-connection of zinc-silver reserve batteries, characterized in that: The following steps are involved: S1. The battery pack is designed with multiple single cells connected in series, the working voltage is 270V, and the slot spacing between two adjacent cells is 3-4mm; S2. Insert heat shrink tubing at the tabs of the positive and negative electrodes of the monomer, then cut the tabs to a suitable length. The lower end of the heat shrink tubing is heated by hot air and then shrinks to seal the gap between the tab silver wire and the cover plate to prevent the sealing glue from leaking onto the plate and affecting the battery performance. S3, using a special jumper tool for monomers, the silver wires of the positive electrode of one monomer and the negative electrode of the adjacent monomer are twisted and tightened into a bundle; S4. The adjacent monomers are wound and tightened into a bundle of silver wires and fixed using conventional soldering.

2. A zinc-silver reserve battery self-cross-connection method according to claim 1, characterized in that: In step S1, the battery pack is designed with two groups of unit batteries connected in series for power supply. The two groups of unit batteries are stacked up and down. Each group of unit batteries is designed with 96 cells, the working voltage is 270V, and the slot spacing between two adjacent cells is 4mm.

3. A zinc-silver reserve battery self-cross-connection method according to claim 2, characterized in that: In the step S2, the lower end of the heat shrink tube is heated by hot air and then shrunk to a point where the lead-out hole of the tab silver wire is just filled.

4. A zinc-silver reserve battery self-cross-connection method according to claim 3, characterized in that: In the step S4, the monomer cross-connection tool twists the positive and negative electrodes of adjacent monomers twice and then welds them.

5. A zinc-silver reserve battery self-cross-connection method according to claim 1, characterized in that: In the step S1, the battery pack uses 18 cells connected in series, and the slot spacing between two adjacent cells is 3.0 mm.

6. A zinc-silver reserve battery self-cross-connection method according to claim 5, characterized in that: In the step S2, the lower end of the heat shrink tube is heated by hot air and shrinks to just fill the gap between the positive and negative silver wire lead-out holes of the adjacent monomers.

7. A zinc-silver reserve battery self-cross-connection method according to claim 6, characterized in that: In the step S3, the positive and negative lead silver wires of adjacent monomers are wound and tightened into a bundle. When the positive and negative lead silver wires of adjacent monomers are wound and tightened, the limit is set, and the monomers must not be pulled up and suspended in the air. After multiple silver wires are tightened into a bundle, the appropriate trimming height is determined, and the excess silver wires on the top are cut off with pliers.

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