A lead-acid battery and its assembly method

Abstract

This invention provides a lead-acid battery and its assembly method, belonging to the field of battery technology. It includes a battery case, a terminal group, a negative output terminal, a positive output terminal, and a battery cover. The terminal group is installed inside the battery case. The terminal group includes multiple negative plates, positive plates, and separators. Through-hole mounting holes are provided on the negative plates, positive plates, and separators. The centers of the negative and positive plates are located on the central axis of the mounting holes. Negative tabs on the negative plates and positive tabs on the positive plates are located within the mounting holes. One end of the negative output terminal passes through multiple mounting holes and is connected to multiple negative tabs. One end of the positive output terminal passes through multiple mounting holes and is connected to multiple positive tabs. The battery cover is sealed to the battery case. The lead-acid battery provided by this invention results in a more uniform current density distribution within the battery, full conversion of the lead paste during formation, and balanced charge provided by the lead paste on the plates during discharge, thus improving the utilization rate of the lead paste.

Description

Technical Field

[0001] This invention belongs to the field of battery technology, and more specifically, relates to a lead-acid battery and its assembly method. Background Technology

[0002] Currently, the plate lugs of lead-acid battery grids are located on the upper frame, causing the current density to gradually decrease in a stepwise manner during charging and discharging. This results in an uneven utilization rate of the lead paste between the upper and lower parts. The lower lead paste is prone to incomplete formation due to its low current density, and its low utilization rate during discharge also affects the battery's discharge capacity and service life. Summary of the Invention

[0003] The purpose of this invention is to provide a lead-acid battery and its assembly method to solve the technical problems of uneven current density distribution and low lead paste utilization in the prior art.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is: to provide a lead-acid battery, comprising:

[0005] The battery compartment has connection holes on both the left and right sides.

[0006] A group of electrodes is installed inside the battery case; the group of electrodes includes multiple negative plates, positive plates, and separators, each positive plate being located between two adjacent negative plates, and the separator being located between adjacent positive and negative plates; each negative plate, positive plate, and separator has a through mounting hole, the center of each negative plate and positive plate being located on the central axis of the mounting hole, the wall of the mounting hole of the negative plate having a negative tab extending toward the center of the hole, and the wall of the mounting hole of the positive plate having a positive tab extending toward the center of the hole, the positive tab and the negative tab being located on opposite walls of the mounting hole;

[0007] The negative output terminal has one end passing through one of the mounting holes and connected to one of the negative tabs; the other end of the negative output terminal is located in one of the connection holes.

[0008] The positive output terminal has one end passing through one of the mounting holes and connected to one of the positive tabs; the other end of the positive output terminal is located in another connection hole.

[0009] The battery cover is fixedly installed on the battery compartment and is sealed to the battery compartment.

[0010] In one possible implementation, there are multiple electrode groups arranged side-by-side in the battery compartment; the multiple electrode groups are connected in series; the negative output terminal is connected to the negative tab on one end of the electrode group, and the positive output terminal is connected to the positive tab on the electrode group at the other end; the multiple lead-acid batteries also include multiple series busbars, each of which is disposed between two adjacent electrode groups for connecting the negative tab and the positive tab of the two adjacent electrode groups.

[0011] In one possible implementation, both the positive and negative tabs are provided with rectangular holes, and the cross-sections of the negative output terminal, the positive output terminal, and the series busbar are all rectangular, and they are fitted into the corresponding rectangular holes.

[0012] In one possible implementation, a positive electrode busbar is provided between two adjacent positive electrode tabs, and a negative electrode busbar is provided between two adjacent negative electrode tabs. Both the positive electrode busbar and the negative electrode busbar are provided with rectangular holes.

[0013] In one possible implementation, the left and right sides of the battery compartment are further provided with a first assembly plate and a second assembly plate respectively installed in the connection hole. The first assembly plate includes a positive electrode pad and a negative electrode output plate. A through hole is formed in the positive electrode pad, and the negative electrode output plate is installed in the through hole. The negative electrode output plate has a rectangular hole, and the negative electrode output end passes through the rectangular hole in the negative electrode output plate. The second assembly plate includes a negative electrode pad and a positive electrode output plate. A through hole is formed in the negative electrode pad, and the positive electrode output plate is installed in the through hole. The positive electrode output plate has a rectangular hole, and the positive electrode output end passes through the rectangular hole in the positive electrode output plate.

[0014] In one possible implementation, the top of the left and right sides of the battery compartment is provided with downwardly extending clearance holes, which are connected to the connection holes; the battery cover is provided with a shield that is installed in conjunction with the clearance holes.

[0015] In one possible implementation, a plurality of negative plates, a positive plate, and a separator form an installation channel for mounting the negative output terminal, the positive output terminal, and the series busbar. Rubber gaskets are provided between the negative plates at both ends of the plurality of electrode groups and the inner wall of the battery compartment, and the rubber gaskets are used to separate the battery compartment from the installation channel. The installation channel is filled with epoxy resin.

[0016] In one possible implementation, a middle grid plate is provided between two adjacent electrode groups, and sealing gaskets connected to the negative electrode plates on both sides of the middle grid plate are provided.

[0017] In one possible implementation, the negative output terminal, the positive output terminal, and both ends of the series busbar are provided with threaded sections, and each threaded section is provided with a nut. The nut is used to press the negative plate, the positive plate, and the separator tightly together.

[0018] The beneficial effects of the lead-acid battery provided by this invention are as follows: Compared with the prior art, the lead-acid battery of this invention has mounting holes in each negative plate, positive plate, and separator, and the centers of the negative plate and positive plate are all on the central axis of the mounting holes; the negative tabs on the negative plate and the positive tabs on the positive plate are all located in the mounting holes, and the negative output terminal and the positive output terminal are installed into the mounting holes and connected to multiple negative tabs and multiple positive plates respectively. Finally, the electrode group is installed into the battery case and sealed in the battery case with a battery cover. The negative output terminal and the positive output terminal respectively pass through the connection holes on the left and right sides of the battery case to form negative terminals and positive terminals. In this way, the negative and positive tabs are set in the center of the negative and positive plates, so that the current density distribution in the battery is more uniform, thereby enabling the lead paste to be fully converted during the formation of the battery, and the lead paste on the plates provides a balanced amount of charge during discharge, thus improving the utilization rate of the lead paste.

[0019] Another object of the present invention is to provide a method for assembling a lead-acid battery, comprising any one of the lead-acid batteries described above, and further comprising:

[0020] A pad and an extruder are installed at one end of the negative output terminal, and a pad and an extruder are installed at one end of the positive output terminal. The pad is provided with a through hole.

[0021] Mounting holes are made in the negative electrode plate, the separator and the positive electrode plate, and the centers of the negative electrode plate and the positive electrode plate are located on the central axis of the mounting holes;

[0022] The negative electrode plate, the separator, and the positive electrode plate are installed on one side of the pad. The negative electrode tabs on each negative electrode plate are located on the same side of the mounting hole, and the positive electrode tabs on each positive electrode plate are located on the same side of the mounting hole. The negative electrode tabs and the positive electrode tabs are arranged symmetrically.

[0023] The negative output terminal is connected to a plurality of negative tabs, and the positive output terminal is connected to a plurality of positive tabs;

[0024] The extruder is used to press together the plurality of negative electrode plates, the positive electrode plates and the separator.

[0025] Install the electrode group into the battery compartment, remove the pad and the extruder, and seal the electrode group;

[0026] Install the battery cover, which is sealed to the battery compartment.

[0027] The assembly method of lead-acid battery provided by the present invention uses extruders and pads to make the negative plate, positive plate and separator more accurate and tight. The negative and positive tabs are placed at the center of the negative and positive plates, so that the current density distribution in the battery is more uniform. This allows the lead paste to be fully converted during the formation of the battery, and the lead paste on the plates provides a balanced amount of charge during discharge, thereby improving the utilization rate of the lead paste. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the connection of multiple pole groups provided in an embodiment of the present invention;

[0030] Figure 2 A side view of a lead-acid battery provided in an embodiment of the present invention;

[0031] Figure 3 A side view of a lead-acid battery without a cover, provided in an embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the structure of the first assembled piece provided in an embodiment of the present invention;

[0033] Figure 5 This is a schematic diagram of the structure of a battery compartment provided in an embodiment of the present invention.

[0034] The following are the labeling elements in the figure:

[0035] 1. Battery case; 11. First assembly plate; 111. Positive electrode pad; 112. Negative output plate; 113. Through hole; 12. Second assembly plate; 121. Negative electrode pad; 122. Positive output plate; 13. Cover plate; 2. Electrode group; 21. Negative electrode plate; 211. Negative electrode lug; 212. Negative electrode busbar; 22. Positive electrode plate; 221. Positive electrode lug; 222. Positive electrode busbar; 23. Separator; 24. Mounting hole; 25. Rectangular hole; 26. Middle grid plate; 261. Sealing gasket; 3. Negative output terminal; 31. Nut; 4. Positive output terminal; 5. Battery cover; 6. Series busbar. Detailed Implementation

[0036] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0037] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0038] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0040] Please see Figures 1 to 5The lead-acid battery provided by the present invention will now be described. A lead-acid battery includes a battery case 1, an electrode group 2, a negative output terminal 3, a positive output terminal 4, and a battery cover 5. Connection holes are provided on both the left and right sides of the battery case 1. The electrode group 2 is installed inside the battery case 1. The electrode group 2 includes multiple negative plates 21, positive plates 22, and separators 23. Each positive plate 22 is located between two adjacent negative plates 21, and each separator 23 is located between adjacent positive plates 22 and negative plates 21. Through mounting holes 24 are provided on the negative plates 21, positive plates 22, and separators 23. The centers of the negative plates 21 and positive plates 22 are located on the central axis of the mounting holes 24. The walls of the mounting holes 24 on the negative plates 21... A negative electrode tab 211 extending toward the center of the hole is provided, and a positive electrode tab 221 extending toward the center of the hole is provided on the wall of the mounting hole 24 of the positive electrode plate 22. The positive electrode tab 221 and the negative electrode tab 211 are respectively located on the opposite wall of the mounting hole 24. One end of the negative electrode output terminal 3 passes through multiple mounting holes 24 and is connected to multiple negative electrode tabs 211. The other end of the negative electrode output terminal 3 is located in a connecting hole. One end of the positive electrode output terminal 4 passes through multiple mounting holes 24 and is connected to multiple positive electrode tabs 221. The other end of the positive electrode output terminal 4 is located in another connecting hole. The battery cover 5 is fixedly installed on the battery case 1 and is sealed to the battery case 1.

[0041] Compared with the prior art, the lead-acid battery provided by this invention has mounting holes 24 on each negative plate 21, positive plate 22, and separator 23, and the centers of the negative plate 21 and positive plate 22 are all on the central axis of the mounting hole 24; the negative tabs 211 on the negative plate 21 and the positive tabs 221 on the positive plate 22 are all located in the mounting holes 24; the negative output terminal 3 and the positive output terminal 4 are both installed into the mounting holes 24 and are respectively connected to multiple negative tabs 211 and multiple positive plates 22; finally, the electrode group 2 is installed into the battery. Inside the battery tank 1, and sealed with a battery cover 5, the negative output terminal 3 and the positive output terminal 4 pass through the connection holes on the left and right sides of the battery tank 1 to form negative terminals and positive terminals, respectively. In this way, the negative tab 211 and the positive tab 221 are positioned at the center of the negative plate 21 and the positive plate 22, so that the current density distribution in the battery is more uniform, thereby enabling the lead paste to be fully converted during battery formation and providing balanced charge from the plate lead paste during discharge, thus improving the utilization rate of lead paste.

[0042] Please see Figure 1 and Figure 2In one specific embodiment of the lead-acid battery provided by the present invention, there are multiple electrode groups 2 arranged side by side in the battery compartment 1; the multiple electrode groups 2 are connected in series; the negative output terminal 3 is connected to the negative tab 211 on one end of the electrode group 2, and the positive output terminal 4 is connected to the positive tab 221 on the other end of the electrode group 2; the multiple lead-acid batteries also include multiple series busbars 6, each series busbar 6 is disposed between two adjacent electrode groups 2, used to connect the negative tab 211 and positive tab 221 of the two adjacent electrode groups 2; by using multiple electrode groups 2 arranged side by side, and then using multiple series busbars 6 to connect the multiple electrode groups 2 in series, the voltage of the battery is increased. The multiple series busbars 6 are installed in the mounting holes 24, the length of the series busbars 6 is greater than the length of two electrode groups 2, and both ends are connected to the multiple negative tabs 211 and multiple positive tabs 221 of the two adjacent electrode groups 2, respectively, thereby completing the series connection of the multiple electrode groups 2. The negative electrode lug 211 and positive electrode lug 221 in the mounting holes 24 of two adjacent electrode groups 2 are located on the same side, which facilitates the connection of the series busbar 6 with the negative electrode lug 211 and positive electrode lug 221, thereby achieving the series connection function.

[0043] The negative output terminal 3, the positive output terminal 4, and the series busbar 6 are all made of copper.

[0044] The battery compartment 1 has connection holes on both sides through which the negative output terminal 3 and the positive output terminal 4 pass. The battery compartment 1 has multiple individual cells, which are used to install each pole group 2. There is an installation groove between two adjacent individual cells, and a rubber pad is provided on the inner wall of the installation groove.

[0045] Please see Figure 1 As a specific embodiment of the lead-acid battery provided by the present invention, both the positive electrode tab 221 and the negative electrode tab 211 are provided with rectangular holes 25. The cross-sections of the negative electrode output terminal 3, the positive electrode output terminal 4 and the series busbar 6 are all rectangular, and they are installed in the corresponding rectangular holes 25. That is, the negative electrode output terminal 3, the positive electrode output terminal 4 and the series busbar 6 are long strip structures, and their cross-sections are all rectangular. By installing them in conjunction with the rectangular holes 25, the rotation of the negative electrode output terminal 3, the positive electrode output terminal 4 and the series busbar 6 can be effectively restricted, thereby ensuring stable and reliable operation.

[0046] Please see Figure 1As a specific embodiment of the lead-acid battery provided by the present invention, a positive current collector 222 is provided between two adjacent positive tabs 221, and a negative current collector 212 is provided between two adjacent negative tabs 211. Both the positive current collector 222 and the negative current collector 212 are provided with rectangular holes 25. The positive current collector 222 is installed between the positive tabs 221 and is connected to the corresponding two positive tabs 221. When the positive output terminal 4 or the series current collector 6 is connected to multiple positive tabs 221, the multiple positive current collectors 222 can form a better and more stable path with the multiple positive tabs 221. Similarly, a negative electrode busbar 212 is installed between the negative electrode tabs 211. The negative electrode busbar 212 is connected to the corresponding two negative electrode tabs 211, so that when the negative electrode output terminal 3 or the series busbar 6 is connected to multiple negative electrode tabs 211, the multiple negative electrode busbars 212 can form a better and more stable path with the multiple negative electrode tabs 211. A rectangular hole 25 is opened on the positive electrode busbar 222, and the positive electrode output terminal 4 or the series busbar 6 passes through the rectangular hole 25 on the positive electrode tab 221 and the positive electrode busbar 222. A rectangular hole 25 is opened on the negative electrode busbar 212, and the negative electrode output terminal 3 or the series busbar 6 passes through the rectangular hole 25 on the negative electrode tab 211 and the negative electrode busbar 212.

[0047] Please see Figure 3 and Figure 4As a specific embodiment of the lead-acid battery provided by the present invention, the left and right sides of the battery case 1 are also provided with a first assembly plate 11 and a second assembly plate 12 respectively installed in the connection holes. The first assembly plate 11 includes a positive electrode pad 111 and a negative electrode output plate 112. A through hole 113 is opened on the positive electrode pad 111, and the negative electrode output plate 112 is installed in the through hole 113. A rectangular hole 25 is provided on the negative electrode output plate 112, and the negative electrode output end 3 passes through the rectangular hole 25 on the negative electrode output plate 112. The second assembly plate 12 includes a negative electrode pad 121 and a positive electrode output plate 122. A through hole 113 is provided on the negative electrode pad 121 of the plate 122. The positive electrode output plate 122 is installed in the through hole 113. The positive electrode output plate 122 is provided with a rectangular hole 25. The positive electrode output end 4 passes through the rectangular hole 25 on the positive electrode output plate 122. After the electrode group 2 is installed into the battery compartment 1, the pad and the extrusion piece installed on the negative electrode output end 3 or the first end of the series busbar 6 are removed. The extrusion piece can be a nut 31. The negative electrode output end 3 or the series busbar 6 corresponds to the connection hole on the left and right sides of the battery compartment 1, and the first end is located in the corresponding connection hole. Then, the first assembly plate 11 and the second assembly plate 12 are installed on both sides of the battery compartment 1 respectively. The positive electrode pad 111 in the first assembly plate 11 is installed into the connection hole, and the negative electrode output plate 112 is close to the side of the negative electrode plate 21. The negative electrode output end 3 passes through the rectangular hole 25 on the negative electrode output plate 112, and the nut 31 is installed on the negative electrode output end 3 again, so that the first assembly plate 11 is tightly attached to the electrode group 2. The series busbar 6 is inserted through the rectangular hole 25 on the positive electrode pad 111, and the nut 31 is installed on the series busbar 6. Similarly, the negative electrode pad 121 in the second assembly plate 12 is installed into another connection hole, and the positive electrode output plate 122 is tightly attached to the side of the positive electrode plate 22. The positive electrode output end 4 passes through the rectangular hole 25 on the positive electrode output plate 122, and the nut 31 is installed on the positive electrode output end 4 again, so that the second assembly plate 12 fits tightly in the electrode group 2. The series busbar 6 at this end passes through the rectangular hole 25 on the negative electrode pad 121, and the nut 31 is installed on the series busbar 6. After the first assembly plate 11 and the second assembly plate 12 are installed in the connection holes on the battery case 1, the first assembly plate 11 and the second assembly plate 12 are sealed with a cover plate 13. The cover plate 13 is installed with the connection hole by an interference fit. In the first assembly 11, the positive electrode pad 111 is made of plastic, and the negative electrode output plate 112 is made of copper; the positive electrode pad 111 and the negative electrode output plate 112 are integrally formed. In the second assembly 12, the negative electrode pad 121 is made of plastic, and the positive electrode output plate 122 is made of copper; the negative electrode pad 121 and the positive electrode output plate 122 are integrally formed. After the first assembly 11 and the second assembly 12 are installed, hot melt adhesive is applied between the first assembly 11 and the second assembly 12 and the connecting holes.

[0048] Please see Figure 2 and Figure 3 As a specific embodiment of the lead-acid battery provided by the present invention, the top of the left and right sides of the battery compartment 1 is provided with downwardly extending clearance holes, which are connected to the connection holes; the battery cover 5 is provided with a baffle plate that is installed in conjunction with the clearance holes. Through this structure, multiple electrode groups 2 can be smoothly installed into the battery compartment 1, and the negative electrode output terminal 3 and the end of the series busbar 6, and the positive electrode output terminal 4 and the end of the series busbar 6 are respectively located in the connection holes. Baffle plates are provided on both sides of the battery cover 5, and the baffle plates are sealed to the clearance holes.

[0049] Please see Figure 1 As a specific embodiment of the lead-acid battery provided by the present invention, multiple negative plates 21, positive plates 22 and separators 23 form an installation channel for installing the negative output terminal 3, the positive output terminal 4 and the series busbar 6. Rubber gaskets are provided between the negative plates 21 at both ends of the multiple electrode groups 2 and the inner wall of the battery case 1. The rubber gaskets are used to separate the battery case 1 from the installation channel. The installation channel is filled with epoxy resin. In order to make the current density distribution of the battery uniform and improve the utilization rate of lead paste, the negative output terminal 3, the positive output terminal 4 and the series busbar 6 are installed at the center position on both sides of the entire battery, so that they are easily immersed in the electrolyte in the battery case 1. The negative output terminal 3, positive output terminal 4, and series busbar 6 are installed within the mounting channel formed by multiple mounting holes 24. Therefore, after installing multiple electrode groups 2 into the battery case 1, rubber gaskets are installed on the two outermost negative electrode plates 21 of the multiple electrode groups 2, forming a sealed connection between the two outermost negative electrode plates 21 and the inner wall of the battery case 1, preventing electrolyte from entering the mounting channel. After sealing one end of the mounting channel, the entire battery is kept upright, and epoxy resin is injected from the other end of the mounting channel until the epoxy resin completely fills the mounting channel. Then, the other end of the mounting channel is sealed with a cap, and the battery is placed in a curing oven until the epoxy resin hardens. The hardened epoxy resin completely encapsulates the negative output terminal 3, positive output terminal 4, and series busbar 6, making the process safer and more reliable.

[0050] Please see Figure 1 and Figure 5As a specific embodiment of the lead-acid battery provided by the present invention, a middle grid plate 26 is provided between two adjacent electrode groups 2. Both sides of the middle grid plate 26 are provided with sealing gaskets 261 that are connected to the negative electrode plates 21 on the two electrode groups 2. The middle grid plate 26 is installed between two adjacent electrode groups 2, and the two sides of the middle grid plate 26 are the negative electrode plates 21 on the two electrode groups 2 respectively. In order to achieve the sealing effect between multiple electrode groups 2, sealing gaskets 261 are installed on both sides of the middle grid plate 26. The inner diameter of the sealing gasket 261 is greater than or equal to the diameter of the mounting hole 24. With the help of multiple middle grid plates 26 and sealing gaskets 261 on the middle grid plate 26, the mounting channel formed by multiple mounting holes 24 is separated from other areas of the battery compartment 1. Epoxy resin is injected into the mounting channel and held in the mounting channel to achieve the final sealing, ensuring that the negative electrode output terminal 3, the positive electrode output terminal 4 and the series busbar 6 are not affected by the electrolyte.

[0051] Please see Figure 1 , Figure 4 and Figure 5 As a specific embodiment of the lead-acid battery provided by the present invention, threaded sections are provided at both ends of the negative output terminal 3, the positive output terminal 4, and the series busbar 6, and nuts 31 are provided on the threaded sections. The nuts 31 are used to press the negative plate 21, the positive plate 22 and the separator 23 to fit tightly. Threaded sections are opened on the outer surfaces of both ends of the negative output terminal 3, the series busbar 6 and the positive output terminal 4, and nuts 31 are installed on the threaded sections. When assembling each electrode group 2, first install a nut 31 at the beginning of the negative output terminal 3 and the series busbar 6. After completing the components such as the negative plate 21, positive plate 22 and separator 23, install another nut 31 at the end of the negative output terminal 3 and the series busbar 6, and tighten the other nut 31 so that the multiple negative plates 21, positive plates 22, separators 23, positive busbar 222 and negative busbar 212 are kept in close contact, and the thickness of the electrode group 2 after tightening is consistent with the thickness of the single cell in the battery compartment 1.

[0052] Not shown in the figure, this embodiment of the invention also provides a method for assembling a lead-acid battery, which includes any one of the lead-acid batteries described above, and further includes:

[0053] A pad and an extruder are installed at one end of the negative output terminal 3, and a pad and an extruder are installed at one end of the positive output terminal 4. The pad has a through hole.

[0054] Mounting holes 24 are made on the negative electrode plate 21, the separator 23 and the positive electrode plate 22, and the centers of the negative electrode plate 21 and the positive electrode plate 22 are located on the central axis of the mounting holes 24.

[0055] The negative electrode plate 21, the separator 23, and the positive electrode plate 22 are installed on one side of the pad. The negative electrode tabs 211 on each negative electrode plate 21 are located on the same side of the mounting hole 24, and the positive electrode tabs 221 on each positive electrode plate 22 are located on the same side of the mounting hole 24. The negative electrode tabs 211 and the positive electrode tabs 221 are arranged symmetrically.

[0056] The negative output terminal 3 is connected to multiple negative tabs 211, and the positive output terminal 4 is connected to multiple positive tabs 221;

[0057] Multiple negative electrode plates 21, positive electrode plates 22 and separators 23 are pressed together using an extruder;

[0058] Install the electrode group 2 into the battery compartment 1, remove the pad and the extrusion piece, and seal the electrode group 2;

[0059] Install the battery cover 5, which is sealed to the battery compartment 1.

[0060] The assembly method of the lead-acid battery provided in this embodiment of the invention uses extruders and pads to make the negative plate 21, positive plate 22 and separator 23 more accurately and tightly installed. The negative tab 211 and positive tab 221 are set at the center of the negative plate 21 and the positive plate 22, so that the current density distribution in the battery is more uniform. This allows the lead paste to be fully converted during the battery formation and provides a balanced amount of charge during discharge, thus improving the utilization rate of the lead paste.

[0061] According to the technical solution of this invention, a 1×12 single-cell 24V30Ah battery is assembled. The design with the same discharge area and lead paste amount is adopted. Three batteries of each type are selected for experimental verification. The following is a data comparison (lead paste utilization rate: because the plate lugs of conventional batteries are on the upper part of the plate, the upper lead paste mainly discharges more deeply when the battery discharges, while the lower lead paste discharges more shallowly, resulting in uneven discharge).

[0062]

[0063] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A lead-acid storage battery characterised in that, The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery.

2. A lead-acid battery as claimed in claim 1, characterised in that, The application relates to a lead-acid storage battery.

3. A lead-acid battery as claimed in claim 2, characterised in that, The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. 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The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application relates to a lead-acid storage battery. The application 4. The lead-acid battery of claim 2, wherein The left and right side surfaces of the battery tank are further provided with a first combination piece and a second combination piece respectively installed in the connecting holes, the first combination piece comprises a positive electrode pad and a negative electrode output plate, a through hole is formed in the positive electrode pad, the negative electrode output plate is installed in the through hole, a rectangular hole is formed in the negative electrode output plate, and the negative electrode output end passes through the rectangular hole in the negative electrode output plate; the second combination piece comprises a negative electrode pad and a positive electrode output plate, a through hole is formed in the negative electrode pad, the positive electrode output plate is installed in the through hole, a rectangular hole is formed in the positive electrode output plate, and the positive electrode output end passes through the rectangular hole in the positive electrode output plate.

5. A lead-acid battery as claimed in claim 4, characterised in that, The top of the left and right side surfaces of the battery tank is provided with a downwardly extending avoiding hole which is in communication with the connecting hole; the battery cover is provided with a shielding plate which is installed in cooperation with the avoiding hole.

6. The lead-acid battery of claim 1, wherein A middle grid plate is arranged between the two adjacent pole groups, and the two side surfaces of the middle grid plate are provided with sealing gaskets connected with the negative electrode plates of the two pole groups.

7. The lead-acid battery of claim 1, wherein Threaded sections are arranged at both ends of the negative electrode output end, the positive electrode output end and the series bus bar, and nuts are arranged on the threaded sections, which are used to press the negative electrode plates, the positive electrode plates and the separators to be closely attached.

8. A method of assembling a lead-acid battery as claimed in any one of claims 1 to 7, characterised in that, Comprise: A pad and a pressing piece are installed at one end of the negative electrode output end and one end of the positive electrode output end, and a through hole is formed in the pad; Mounting holes are formed in the negative electrode plates, the separators and the positive electrode plates, and the centers of the negative electrode plates and the positive electrode plates are located on the central axis of the mounting holes; The negative electrode plates, the separators and the positive electrode plates are installed on one side of the pad, the negative electrode tabs on each negative electrode plate are located on the same side of the mounting hole, the positive electrode tabs on each positive electrode plate are located on the same side of the mounting hole, and the negative electrode tabs and the positive electrode tabs are symmetrically arranged; The negative electrode output end is connected with a plurality of negative electrode tabs, and the positive electrode output end is connected with a plurality of positive electrode tabs; The plurality of negative electrode plates, the positive electrode plates and the separators are pressed tightly by using the pressing piece; The pole groups are installed in the battery tank, the pad and the pressing piece are removed, and the pole groups are sealed; The battery cover is installed and is in sealed connection with the battery tank.

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