Method for processing tubular long-life batteries

Abstract

The application relates to the technical field of battery processing, in particular to a processing method of a tubular long-life battery, which comprises the following steps: S3: plastic dipping is carried out by using a plastic dipping device, the battery pole group after welding is dipped into anticorrosive liquid, and the bus bar and the pole terminal are completely dipped; the anticorrosive liquid is configured by polyurethane; the polyurethane is composed of two components, namely a main agent and a curing agent; the proportion of the main agent and the curing agent is 3:0.8-1; hardening; the pole group coated with the anticorrosive liquid is placed into an oven at 50 DEG C for baking for 30 minutes. According to the application, after the welding of the battery pole group is completed, the anticorrosive liquid is dipped on the surface of the bus bar and the pole column, a protective layer is formed on the surface of the bus bar and the pole column, oxygen and acid mist are isolated from the corrosion of the bus bar and the pole column, the current transmission capacity is guaranteed, and the service life of the battery is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery processing, in particular to a processing method of tubular long-life battery. BACKGROUND

[0002] The capacity of lead-acid battery is determined by the plate, and the capacity of single plate is limited. In order to improve the capacity of the battery, multiple plates are connected together through busbars, and then the busbars are used as current channels to complete the exchange of electrical energy inside and outside the battery. The busbar plays the role of connecting the same plate in parallel and transmitting electrons, and the pole plays the role of transmitting electrons. In order to ensure the reliability of current transmission, the cross-sectional area of the busbar and the cross-sectional area of the pole are determined by the size of the current they carry. Considering that the cross-sectional area of the busbar and the cross-sectional area of the pole will decrease due to corrosion during the use of the battery, thereby affecting the charging and discharging performance of the battery.

[0003] Therefore, the processing method of tubular long-life battery is needed to solve the above problems. SUMMARY

[0004] The present application provides a processing method of tubular long-life battery to solve the problem that the cross-sectional area of the busbar and the cross-sectional area of the pole will decrease due to corrosion in the prior art.

[0005] The processing method of tubular long-life battery includes the following specific steps:

[0006] S1: grouping, grouping the negative plate, the separator and the positive plate in the correct order and quantity to form a group of plates, and the separator is PVC or PE;

[0007] S2: group welding, welding the grouped plate and separator body or welding a specified number of single plates into a body according to the polarity of the corresponding pole to form a busbar, and the group welding of the plate group can form a positive group and a negative group;

[0008] S3: using a plastic dipping device to dip plastic, dipping the welded battery plate group into a corrosion-resistant liquid so that the busbar and the pole terminal are completely immersed, the corrosion-resistant liquid is composed of polyurethane, and the polyurethane is composed of two components, a main agent and a curing agent, and the ratio of the main agent to the curing agent is 3:0.8-1.

[0009] S4: hardening, placing the plate group coated with the corrosion-resistant liquid into an oven at 50 degrees Celsius for 30 minutes;

[0010] S5: slotting, loading the battery plate group into the battery slot;

[0011] S6: butt welding, welding the lead-acid battery through the wall to connect each unit battery into a battery pack;

[0012] S7: heat sealing, heating the battery slot and the bottom of the slot cover to 200-220 DEG C with an electric heating plate, making the battery slot and the bottom of the slot cover in a molten state, then press the slot cover together, so that it is bonded, becoming a whole.

[0013] Through the above technical scheme, after the battery pole group welding is completed, a layer of protective layer is formed on the surface of the bus bar and the pole by immersing the plastic corrosion-resistant liquid, so as to isolate the corrosion of oxygen and acid mist on the bus bar and the pole, thereby ensuring the current transmission capacity and improving the service life of the battery.

[0014] As a further technical solution of the application, the plastic dipping equipment in step S3 includes a plurality of sealing assemblies, the number of sealing assemblies corresponds to the number of threaded holes of the pole, the sealing assembly includes a base and a cavity, the cavity is connected to the top of the base, the upper end surface of the base is connected with a plug rod, and the plug rod penetrates the cavity, the inner wall of the plug rod is connected with a spring, the other end of the spring is connected with a movable rod, the plug rod and the movable rod are slidingly connected, and the top end of the movable rod is connected with a sealing head.

[0015] Through the above technical scheme, the plastic dipping step is assisted to avoid the threaded hole of the pole from entering the corrosion-resistant liquid to affect the subsequent installation.

[0016] As a further technical solution of the application, the inner wall of the plug rod is provided with a plurality of sliding grooves, and a plurality of sliding grooves are slidingly connected with sliding blocks, and the end of the sliding block away from the sliding groove is connected to the movable rod.

[0017] Through the above technical scheme, the stability of the trajectory between the plug rod and the movable rod is ensured during relative movement, and the spring is prevented from being twisted to ensure the stability of the pole group immersion liquid.

[0018] As a further technical solution of the application, the sealing head is a circular cone with a wide upper part and a narrow lower part, and the diameter of the bottom surface of the sealing head is greater than the diameter of the threaded hole in the pole terminal, and the sealing head is made of rubber.

[0019] Through the above technical scheme, the shape and material of the sealing head are limited, so that the sealing head is extruded and deformed to ensure the sealing of the threaded hole of the pole.

[0020] As a further technical solution of the application, the sealing head is a circular cylinder, and the outer wall is provided with external threads matching the threaded groove in the pole terminal, the upper end surface of the base is connected with an output motor, and the output end of the output motor is connected with an output shaft, the outer wall of the output shaft is connected with a driving gear, the outer wall of each plug rod is connected with a driven gear, and a plurality of driven gears and the driving gear are connected by a chain.

[0021] Through the above technical scheme, a screw head matching the threaded hole of the pole is designed to achieve the effect of sealing the threaded hole.

[0022] As a further technical solution of the present invention, the top end of the output shaft is inserted into the cavity, and the top end of the output shaft is connected to a stirring blade.

[0023] The above technical solution allows for stirring of the preservative solution before and after dip coating, ensuring the homogeneity of the preservative solution during the dip coating process. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0026] Figure 3 For the present invention Figure 1 A top-view cross-sectional structural diagram of the MM section in the diagram;

[0027] Figure 4 For the present invention Figure 2 A top-view cross-sectional structural diagram at point NN.

[0028] Figure descriptions: 110, base; 120, cavity; 130, insertion rod; 131, slide groove; 132, slider; 140, spring; 150, movable rod; 160, sealing head; 210, output motor; 220, output shaft; 230, driving gear; 240, driven gear; 250, chain; 260, stirring blade. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0030] The space above the electrode assembly inside a lead-acid battery is an atmosphere with high oxygen and acid mist concentrations. Towards the end of charging, the water inside the battery undergoes electrolysis, producing oxygen and hydrogen, further increasing the oxygen concentration within the battery. The busbars and terminals are made of lead alloy, which oxidizes upon contact with oxygen, forming lead dioxide on their surface. The battery also contains a large amount of sulfuric acid, and the upper space contains significant amounts of acid mist. This acid mist reacts with the lead dioxide on the busbars and terminals to form lead sulfate. The lead sulfate that detaches from the busbars and terminals exposes the lead alloy inside, leading to further oxidation and corrosion. Therefore, as the battery is used, the busbars and terminals continuously shrink due to oxidation and corrosion, gradually reducing their current carrying capacity and accelerating battery failure.

[0031] The specific steps for manufacturing tubular long-life batteries are as follows:

[0032] S1: Grouping, the negative plate, separator and positive plate are grouped in the correct order and quantity to form a group of groups, and the separator is PVC or PE.

[0033] The plate wrapping process is carried out in the plate wrapping machine. Due to factors such as vibration, a small amount of lead dust and waste dry lead paste may be generated during the plate wrapping process. A sealing cover can be designed outside the lead dust part of the plate wrapping machine to make it in a negative pressure state.

[0034] S2: Group welding, the grouped plate and separator body or the specified number of single plate are welded to the corresponding pole in the pole direction to form a bus bar. After the group welding, the positive group and the negative group can be formed.

[0035] S3: Using a plastic dipping device to dip plastic, the battery pole group after welding is immersed in the corrosion-resistant liquid, and the bus bar and the pole terminal are completely immersed. The corrosion-resistant liquid is composed of polyurethane, which is composed of two components, main agent and curing agent. The ratio of main agent to curing agent is 3:0.8-1.

[0036] By adjusting the ratio of curing agent, the service life of corrosion-resistant agent, i.e. curing time, can be adjusted.

[0037] S4: Hardening, the pole group wrapped with corrosion-resistant liquid is placed in a 50 degree Celsius oven for 30 minutes.

[0038] In some specific embodiments, the preparation of the corrosion-resistant liquid can also use melted plastic, such as PP in a molten state, and the hardening of the plastic corrosion-resistant layer can use natural cooling or air cooling.

[0039] S5: Into the slot, the battery pole group is loaded into the battery slot.

[0040] S6: Welding, the lead-acid battery is welded through the wall to connect each unit battery into a battery pack.

[0041] S7: Heat sealing, the battery slot and the bottom of the slot cover are heated to 200-220°C by an electric heating plate, so that the battery slot and the bottom of the slot cover are in a molten state, and then the slot cover is pressed together to make it stick together as a whole.

[0042] The plastic dipping device in the above step S3 includes a plurality of sealing assemblies, the number of sealing assemblies corresponds to the number of pole threaded holes one by one, the sealing assembly includes a base 110 and a cavity 120 connected to the top of the base 110, the upper end surface of the base 110 is connected with a plug rod 130, and the plug rod 130 penetrates through the cavity 120, the inner wall of the plug rod 130 is connected with a spring 140, the other end of the spring 140 is connected with a movable rod 150, the plug rod 130 and the movable rod 150 are slidingly connected, and the top end of the movable rod 150 is connected with a sealing head 160.

[0043] The inner wall of the inserting rod 130 is provided with a plurality of sliding grooves 131, and a plurality of sliding blocks 132 are slidably connected in the sliding grooves 131, and one end of the sliding block 132 away from the sliding groove 131 is connected to the movable rod 150.

[0044] As shown in Figure 1 and Figure 3 , embodiment one

[0045] The blocking head 160 is conical with the upper part being wide and the lower part being narrow, and the bottom surface diameter of the blocking head 160 is larger than the diameter of the threaded hole of the pole terminal. The blocking head 160 is made of rubber.

[0046] In the specific operation, the A and B components of the polyurethane are mixed with distilled water to form a corrosion-resistant liquid, the corrosion-resistant liquid is poured into the container cavity 120, the battery pole group is inverted, the pole is at the bottom, and the threaded hole is aligned with the blocking head 160. Continue to move the pole group downward, at this time the movable rod 150 and the blocking head 160 move downward with the pole group, the movable rod 150 and the inserting rod 130 slide relative to each other, and the spring 140 is extruded and deformed. When the pole group enters the container cavity 120, and the bus bar and the pole are completely immersed in the corrosion-resistant liquid, the plastic dipping is started. After the plastic dipping is completed, the pole group is moved upward and taken out. At this time, the movable rod 150 and the blocking head 160 are reset by the elastic action of the spring 140, so as to provide subsequent plastic dipping for the pole group.

[0047] As shown in Figure 2 and Figure 4 , embodiment two

[0048] The blocking head 160 is a cylinder, and the outer wall is provided with external threads matched with the threaded groove of the pole terminal. The output motor 210 is connected to the upper end surface of the base 110, and the output shaft 220 is connected to the output end of the output motor 210. The output shaft 220 is connected to the driving gear 230. Each group of inserting rods 130 is connected to the driven gear 240, and a plurality of driven gears 240 are connected to the driving gear 230 through the chain 250.

[0049] In the specific operation, the threaded hole of the pole is aligned and attached with the blocking head 160, and then the output motor 210 is started. The output end of the output motor 210 drives the driving gear 230 to rotate, and through the transmission of the chain 250, a plurality of driven gears 240 and inserting rods 130 are driven to rotate synchronously, and the rotating directions are the same. The blocking head 160 rotates and enters the threaded hole of the pole to form a blocking to the threaded hole. At this time, the pole group is pressed downward and immersed in the corrosion-resistant liquid for soaking. After the soaking is completed, the output motor 210 is started again in reverse rotation, and the pole group can be taken out.

[0050] The output shaft 220 is inserted into the container cavity 120, and the stirring blade 260 is connected to the top end of the output shaft 220.

[0051] In the specific operation, the stirring blade 260 rotates synchronously while the output shaft 220 rotates, so that the antiseptic liquid in the cavity 120 can be stirred to ensure the homogeneity of the antiseptic liquid.

[0052] The above examples are only used to illustrate the technical solutions of the present application, but not limit the present application.

Claims

1. A method of processing a tubular long-life battery, characterized by, The specific steps are as follows: S1: matching, matching the negative plate, the separator and the positive plate in the correct order and quantity to form a group of positive groups, the separator being PVC or PE; S2: group welding, welding the matched plate and separator body with the corresponding pole to form a bus bar, and the positive group and the negative group can be formed after the group welding; S3: using the plastic dipping equipment to dip, the battery group after welding is inverted and dipped into the anticorrosive liquid, so that the bus bar and the pole terminal are completely immersed, the anticorrosive liquid is composed of polyurethane, the polyurethane is composed of two components of main agent and curing agent, and the ratio of the main agent and the curing agent is 3:0.8-1; S4: hardening, the anticorrosive liquid coated group is placed in a 50 degree Celsius oven for 30 minutes; S5: into the groove, the battery group is loaded into the battery groove; S6: butt welding, the lead-acid battery is welded through the wall, and each unit battery is connected into a battery pack; S7: heat sealing, the battery groove and the bottom of the tank cover are heated to 200-220 DEG C by using an electric heating plate, so that the battery groove and the bottom of the tank cover are in a molten state, then the tank cover is pressed together under pressure, so that it is bonded to become a whole; The plastic dipping equipment in step S3 includes a plurality of plugging assemblies, the number of the plugging assemblies corresponds to the number of the pole threaded holes one by one, the plugging assembly includes a base (110) and a cavity (120), the cavity (120) is connected to the top of the base (110), the upper end surface of the base (110) is connected with a plug rod (130), and the plug rod (130) penetrates through the cavity (120), the inner wall of the plug rod (130) is connected with a spring (140), the other end of the spring (140) is connected with a movable rod (150), the plug rod (130) and the movable rod (150) are slidingly connected, and the top end of the movable rod (150) is connected with a plugging head (160), the plugging head (160) is used for plugging the pole threaded hole.

2. The method of claim 1, wherein: A plurality of slide grooves (131) are formed in the inner wall of the plug rod (130), a plurality of slide blocks (132) are slidingly connected in the slide grooves (131), and one end of the slide block (132) away from the slide groove (131) is connected to the movable rod (150).

3. The method of claim 2, wherein: The plugging head (160) is conical with the upper part being wide and the lower part being narrow, and the diameter of the bottom surface of the plugging head (160) is greater than the diameter of the threaded hole in the pole terminal, and the plugging head (160) is made of rubber.

4. The method of claim 2, wherein: The plugging head (160) is a cylinder, and the outer wall is provided with external threads matched with the threaded groove of the pole terminal, the upper end surface of the base (110) is connected with an output motor (210), and the output end of the output motor (210) is connected with an output shaft (220), the outer wall of the output shaft (220) is connected with a driving gear (230), the outer wall of each plug rod (130) is connected with a driven gear (240), and a plurality of driven gears (240) and the driving gear (230) are connected through a chain (250).

5. The method of claim 4, wherein: The top end of the output shaft (220) is inserted into the cavity (120), and the top end of the output shaft (220) is connected with a stirring blade (260).

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