A cross-tandem lead-acid battery internal formation system

Abstract

The application discloses a cross-series lead-acid battery internal formation system, which comprises an acid storage tank, a circulating tank, an acid liquid input device and an acid liquid reflux device, an acid circulating plug is arranged on the lead-acid battery, further comprises a mounting frame and a turnover frame arranged on the mounting frame, at least one battery pack formed by series connection is arranged in the turnover frame, a driving device connected with the turnover frame is arranged on the mounting frame, and the turnover frame can be driven by the driving device to turn over between an acid injection position and an acid pouring position. The cross-series lead-acid battery internal formation system can prevent the acid liquid in the battery pack from being heated during electrolysis, and keep the acid liquid in a normal temperature state, thereby preventing acid mist from being generated. The driving device can automatically drive the turnover frame to turn over between the acid injection position and the acid pouring position, so that the battery pack can be automatically turned over during the acid pouring process, the workload of workers is reduced, and the operation safety is improved.

Description

Technical Field

[0001] This invention relates to the field of lead-acid battery technology, and more specifically to a cross-series lead-acid battery internal formation system. Background Technology

[0002] Lead-acid battery formation refers to the electrolysis of completely dried raw plates (unformed plates) in a dilute sulfuric acid electrolyte. Through oxidation and reduction, the lead monoxide in the positive plate is converted into lead dioxide, and the lead monoxide in the negative plate is converted into spongy metallic lead. The quality of formation directly affects the performance of the lead-acid battery. Therefore, formation is a crucial step in lead-acid battery manufacturing. Currently, there are two formation methods for lead-acid batteries in China: one is the external formation method (tank formation), where the raw plates are formed by charging in a formation tank. However, the dedicated formation tanks used for external formation are large, occupy space, and the operation procedure is relatively complex. Acid fumes generated during the formation process can escape from the open formation tank, seriously polluting the environment. The other is the internal formation method, where the raw plates are first assembled into a battery, and then electrolyte is added for charging and formation. This method has the advantages of simple operation and less environmental pollution, and is widely used by battery manufacturers.

[0003] The battery internal formation process involves adding electrolyte to the battery tank. A common method for adding electrolyte is a two-stage electrolyte replacement process, which includes adding low-density electrolyte, battery formation, acid removal, secondary electrolyte addition, and electrolyte level adjustment. This process is characterized by high formation efficiency and energy saving. For example, the invention patent application with publication number CN102412422A, publication date 2012.04.11, entitled "Small Lead-Acid Battery Internal Formation Equipment", includes a support frame. The support frame is equipped with a dilute acid tank, a high acid tank, a composite tank, an acid pump, an acid inlet device, an acid return device, a dilute acid conversion valve, and a concentrated acid conversion valve. The composite tank, acid pump, acid inlet device, battery pack, and acid return device form a circulating connection. During internal formation, dilute or concentrated acid circulates between the composite tank, acid pump, acid inlet device, battery pack, acid return device, and acid return pump.

[0004] For example, the invention patent application with publication number CN207967158U, publication date 2018.10.12, and title "An Acid-Pouring Tool for Lead-Acid Batteries" includes a sealing cover and a vacuum acid storage tank. The sealing cover has six acid suction ports and acid channels. Each acid suction port is connected to the acid channel, and the end of each acid suction port is matched and tightly inserted into the acid injection hole on the lead-acid battery cover. One end of the acid channel is connected to the vacuum acid storage tank via an acid pipeline, and the vacuum acid storage tank is connected to a vacuum pump via a gas pipeline. In this patent application, when pouring acid, the sealing cover is pressed onto the formed battery cover, and the acid suction ports on the sealing cover are inserted into the acid injection holes of the battery. The sealing cover is pressed tightly onto the battery, and the battery is flipped over. Under the combined action of gravity and negative pressure, the acid inside the battery flows rapidly from the acid suction ports into the vacuum acid storage tank along the acid channels.

[0005] In the internal formation process of the battery, low-density acid is first introduced into the battery for internal formation. The diffusion rate of low-density acid is faster than that of acid in the acid pot, so the current can be increased for formation. After the low-density acid formation is completed, the low-density acid in the battery needs to be drained, and then high-density finished battery acid is introduced for circulation. In the current technology, the acid draining process is mostly done manually. The acid circulation plug is removed, the battery is flipped over and the low-density acid in the battery is poured out, then the battery is flipped over again, the acid circulation plug is inserted and high-density finished battery acid is introduced for circulation. Since some batteries are large and heavy, it consumes a lot of manpower and is inefficient. At the same time, the battery is easily damaged by dropping and there are certain safety hazards. Summary of the Invention

[0006] The purpose of this invention is to provide a cross-series lead-acid battery internal formation system to overcome the above-mentioned shortcomings in the prior art.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A cross-series lead-acid battery internal formation system includes an acid storage tank, a circulation tank, an acid input device, and an acid return device. The lead-acid battery is provided with an acid circulation plug. The system also includes a mounting frame and a flip frame disposed on the mounting frame. At least one battery pack formed in series is placed in the flip frame. The mounting frame is provided with a drive device connected to the flip frame. The flip frame can be driven by the drive device to flip between an acid injection position and an acid discharge position.

[0009] The aforementioned cross-series lead-acid battery internal formation system includes an acid storage tank comprising a dilute acid tank and a concentrated acid tank, and an acid input device comprising an acid delivery pipe connected to the dilute acid tank, the concentrated acid tank, and the circulation tank.

[0010] In the aforementioned cross-series lead-acid battery internal formation system, the acid circulation plug includes an acid injection plug and an acid return plug. The acid injection plug is connected to the acid delivery device, and the acid return plug is connected to the acid reflux device.

[0011] The aforementioned cross-series lead-acid battery internal formation system includes at least one battery pack, which comprises three battery cells connected in a cross-series configuration. Each battery cell is provided with an acid inlet and an acid outlet. One of the acid inlets of the battery pack is connected to the acid injection plug, and one of the acid outlets is connected to the acid return plug. The electrolyte is transported to the battery pack via the acid injection plug and the acid inlet, passes through each battery cell, and is then output from the acid outlet and the acid return plug.

[0012] In the aforementioned cross-series lead-acid battery internal formation system, the lead-acid battery is provided with an acid drain port, and the acid drain port is provided with a control valve. When the flip frame rotates to the acid drain position, the control valve controls the acid drain port to open.

[0013] The aforementioned cross-series lead-acid battery internal formation system also includes an acid recovery tank, which is installed on the mounting frame. When the flip frame is rotated to the acid discharge position, the acid recovery tank is located directly below the acid inlet and the acid outlet.

[0014] The aforementioned cross-series lead-acid battery internal formation system also includes a positioning mechanism, which is disposed on the mounting frame or the acid recovery tank, for fixing the flipping frame at the acid injection position or the acid dumping position.

[0015] The aforementioned cross-series lead-acid battery internal formation system includes a positioning mechanism comprising fixed side plates disposed on both sides of the acid recovery tank, and a first positioning component and a second positioning component disposed on the fixed side plates. The first positioning component is used to fix the flip frame at the acid injection position, and the second positioning component is used to fix the flip frame at the acid pouring position.

[0016] In the aforementioned cross-series lead-acid battery internal formation system, the two sides of the flip frame are respectively provided with a first locking side plate and a second locking side plate, and the first locking side plate and the second locking side plate are provided with locking parts corresponding to the first positioning component and the second positioning component.

[0017] In the aforementioned cross-series lead-acid battery internal formation system, both the first positioning component and the second positioning component include a locking component and a driving component. The locking component includes a moving block and a locking post disposed on the moving block. A spring is disposed on the locking post. The driving component includes a pressure plate, a driving rod, and a driving block connected to each other. The driving block drives the locking post to move and has a locked state of locking with the locking part and a separated state of separating from the locking part.

[0018] In the above technical solution, the present invention provides a cross-series lead-acid battery internal formation system, including a dilute acid tank, a concentrated acid tank, a circulation tank, an acid input device, and an acid return device. The battery pack is formed by cross-series battery cells. The dilute acid tank and the concentrated acid tank can supply low-density and high-density acid to the battery pack. During the internal formation process of the battery pack, the circulation tank, acid input device, acid injection plug, acid inlet, battery pack, acid outlet, acid return plug, acid return device, and circulation tank form a closed-loop acid supply circuit, providing circulating electrolyte for the internal formation of lead-acid batteries. The circulating acid carries away the heat generated during charging. The circulation tank can cool the acid, so that the acid in the battery pack will not heat up during electrolysis and will always be kept at room temperature, avoiding the generation of acid mist due to the high temperature of the acid in the battery pack.

[0019] The cross-series lead-acid battery internal formation system provided by this invention places the battery pack inside a flipping frame. The flipping frame can be automatically flipped between the acid injection position and the acid dumping position by a driving device. In this way, the battery pack can be automatically flipped during the acid dumping process, reducing the workload of workers and improving the safety of operation. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 One of the structural schematic diagrams of the flip frame of the cross-series lead-acid battery internal formation system located at the acid injection position, according to another embodiment of the present invention;

[0022] Figure 2 The second schematic diagram shows the structure of the flip-up frame of the cross-series lead-acid battery internal formation system located at the acid injection position, which is provided in another embodiment of the present invention.

[0023] Figure 3 A schematic diagram of the structure of the flipping frame of the cross-series lead-acid battery internal formation system located at the acid dumping position, as provided in another embodiment of the present invention.

[0024] Figure 4 This is a schematic diagram of the structure of a flip frame provided in another embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the mounting bracket provided in another embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the installation of a lead-acid battery according to another embodiment of the present invention;

[0027] Figure 7 A schematic diagram of the structure of a transmission assembly provided in another embodiment of the present invention;

[0028] Figure 8 This is a schematic diagram of the installation of a transmission assembly according to another embodiment of the present invention;

[0029] Figure 9 A schematic diagram of the structure of the first drive wheel provided in another embodiment of the present invention;

[0030] Figure 10 This is a schematic diagram of the structure of the second drive wheel provided in another embodiment of the present invention;

[0031] Figure 11 This is a schematic diagram of the structure of a rotating wheel provided in another embodiment of the present invention;

[0032] Figure 12 A schematic diagram of the second positioning component in a separated state provided in another embodiment of the present invention;

[0033] Figure 13 A schematic diagram of the second positioning component in a locked state, provided for another embodiment of the present invention.

[0034] 1. Mounting frame; 1.1. First frame; 1.1.1. Sliding limiting frame; 1.2. Second frame; 1.2.1. Rectangular moving opening; 1.3. Dilute acid tank; 1.4. Concentrated acid tank; 1.5. Circulation tank; 1.6. Acid inlet pipe; 1.7. Acid return pipe; 1.8. Elastic blocking component; 2. Lead-acid battery; 2.1. Battery pack; 2.2. Battery unit; 2.3. Acid inlet; 2.4. Acid outlet; 3. Acid circulation plug; 3.1. Acid injection plug; 3.2. Acid return plug; 4. Flip frame; 4.1. First locking side plate; 4.2. Second locking side plate; 4.3. Locking through hole; 4.4. Rotating shaft; 5. Acid recovery tank; 5.1. First side plate; 5.2. Second side plate; 5.3. Horizontal cavity; 5.4. Vertical cavity; 5.5. Moving through hole; 6. Positioning mechanism; 6.1 First positioning component; 6.2 Second positioning component; 6.3 Locking component; 6.4 Moving block; 6.5 Locking pin; 6.6 Spring component; 6.7 Driving component; 6.7.1 Pressing plate; 6.7.2 Driving rod; 6.7.3 Driving block; 7. Driving device; 7.1 Drive motor; 7.2 Drive pulley; 7.3 Rotating pulley; 7.4 Belt; 7.5 Drive shaft; 7.6 Drive disc; 7.7 Arc-shaped contraction part; 7.8 Circular part; 8. Transmission component; 8.1 Circular rotating component; 8.2 Rotating wheel; 8.3 Sector block; 8.4 Circular driving component; 8.5 First driving wheel; 8.6 Second driving wheel; 8.7 Sector groove; 8.8 Connecting screw; 8.9 Pressing component; 9. Moving seat. Detailed Implementation

[0035] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0036] like Figure 1-13 As shown, this embodiment of the invention provides a cross-series lead-acid battery internal formation system, including an acid storage tank, a circulation tank 1.5, an acid input device, and an acid return device. The lead-acid battery 2 is provided with an acid circulation plug 3. The system also includes a mounting frame 1 and a flip frame 4 provided on the mounting frame 1. At least one series-connected battery pack 2.1 is placed in the flip frame 4. The mounting frame 1 is provided with a drive device 7 connected to the flip frame 4. The flip frame 4 can be driven by the drive device 7 to flip between the acid injection position and the acid discharge position.

[0037] Specifically, the acid storage tank includes a dilute acid tank 1.3 and a concentrated acid tank 1.4. The dilute acid tank 1.3 stores low-density acid solution, and the concentrated acid tank 1.4 stores high-density acid solution. The dilute acid tank 1.3, the concentrated acid tank 1.4, and the circulation tank 1.5 are fixedly placed side by side on the top of the mounting frame 1. A dilute acid delivery pipe for the dilute acid solution in the dilute acid tank 1.3 is installed on the bottom side wall of the dilute acid tank 1.3. A dilute acid switch valve is installed on the dilute acid delivery pipe to control the opening or closing of the dilute acid delivery pipe. A concentrated acid delivery pipe for the concentrated acid solution in the concentrated acid tank 1.4 is installed on the bottom side wall of the concentrated acid tank 1.4. A concentrated acid switch valve is installed on the concentrated acid delivery pipe to control the opening or closing of the concentrated acid delivery pipe. The circulation acid tank has an inlet at the top and an outlet at the bottom. The circulation acid tank is equipped with... Equipped with a cooling mechanism, the acid in the circulating acid tank is cooled. The acid circulation plug includes an acid injection plug 3.1 for supplying electrolyte to the lead-acid battery 2 and an acid return plug 3.2 for outputting electrolyte from the lead-acid battery 2. The acid input device includes an acid input pipe 1.6, one end of which is connected to the dilute acid delivery tank, the concentrated acid delivery tank, and the circulating tank 1.5, and the other end of which is connected to the acid injection plug 3.1. The acid return device includes an acid return pipe 1.7, one end of which is connected to the acid return plug 3.2, and the other end of which is connected to the circulating tank 1.5. Switch valves are installed on the acid return pipe 1.7 and the acid delivery pipe, which can control the direction of electrolyte delivery.

[0038] In this embodiment, the lead-acid battery 2 includes at least one battery pack 2.1, and each battery pack 2.1 includes at least three battery cells 2.2. The acid inlet 2.3 and acid outlet 2.4 on each battery cell 2.2 are connected in series to form the battery pack 2.1. Each battery pack 2.1 has an acid inlet 2.3 corresponding to the acid injection plug 3.1 and an acid outlet 2.4 corresponding to the acid return plug 3.2. The acid inlet 2.3 and acid outlet 2.4 can be one, two, or more. In this way, the dilute acid tank 1.3 or the concentrated acid tank 1.4 can deliver electrolyte to the battery pack 2.1 through the acid delivery pipe, the acid injection plug 3.1, and the acid inlet 2.3. During the internal formation process, the circulation tank 1.5, the acid delivery pipe, the acid injection plug 3.1, the acid inlet 2.3, the battery pack 2.1, the acid outlet 2.4, the acid return plug 3.2, and the acid... The liquid return pipe 1.7 and the circulation tank 1.5 form a closed-loop acid circulation circuit, providing circulating electrolyte for the internal formation of the lead-acid battery 2. During the internal formation process, the circulation tank 1.5 can cool the acid, ensuring that the acid flowing into the battery pack 2.1 is at a suitable temperature. Furthermore, the circulating acid carries away the heat generated during charging, preventing the battery temperature from exceeding the set value. This prevents the acid in the battery pack 2.1 from heating up during electrolysis, keeping it at room temperature and avoiding the generation of acid mist due to high acid temperature, thus protecting the environment. It should be noted that this cross-series lead-acid battery 2 internal formation system can also include other equipment found in existing technologies, such as liquid pumps, air pumps, and conveyor belts, which will not be elaborated upon here.

[0039] In this embodiment, the flip frame 4 is rotatably connected to the mounting frame 1. The interior of the flip frame 4 forms a mounting cavity for placing the lead-acid battery 2. At least one battery pack 2.1 is placed in the mounting cavity. A driving device 7 is provided on the mounting frame 1. The driving device 7 can be a driving cylinder, a driving motor 7.1, a gear assembly, or other structures. The driving device 7 can rotate the flip frame 4 180 degrees, so that the battery pack 2.1 can be flipped from the acid filling position to the acid draining position, and can also be rotated from the acid draining position back to the acid filling position. When the flip frame 4 is in the acid draining position, the acid is discharged from the acid drain port of the battery pack 2.1. The acid drain port of the battery pack 2.1 can be an acid inlet 2.3 and an acid outlet 2.4, or a larger diameter acid drain port can be provided on each battery cell 2.2. Under normal conditions, the acid drain port is closed. When the battery pack 2.1 is flipped to the acid draining position, the valve on the acid drain port opens to discharge the electrolyte in the battery pack 2.1.

[0040] In this embodiment, the working process of the cross-series lead-acid battery internal formation system includes the following steps:

[0041] 1) Connect the battery units 2.2 in a cross-series manner to form a battery pack 2.1. Install the battery pack 2.1 inside the flip frame 4. Connect the acid injection plug 3.1 to the acid inlet 2.3 on the battery pack 2.1 and connect the acid return plug 3.2 to the acid outlet 2.4.

[0042] 2) The acid delivery pipe is connected to the dilute acid tank 1.3, the concentrated acid tank 1.4, the circulation tank 1.5 and the acid injection plug 3.1 respectively, and the acid return pipe 1.7 is connected to the acid return plug 3.2 and the circulation tank 1.5;

[0043] 3) Open the switch valves on the dilute acid switch valve, acid delivery pipe, and acid return pipe 1.7 to connect the dilute acid tank 1.3, acid delivery pipe, acid injection plug 3.1, acid inlet 2.3, battery pack 2.1, acid outlet 2.4, acid return plug 3.2, acid return pipe 1.7, and circulation tank 1.5 in sequence. Low-density acid is input into the battery pack 2.1 from the acid injection plug 3.1 and acid inlet 2.3, passes through each battery unit 2.2 in sequence, and is then discharged from the acid outlet 2.4 and acid return plug 3.2 into the circulation tank 1.5. When each battery unit 2.2 is full of low-density acid and there is also some low-density acid in the circulation tank 1.5, the dilute acid tank 1.3 stops supplying low-density acid to the acid injection plug 3.1 and acid inlet 2.3.

[0044] 4) Adjust the switch valve on the acid delivery pipe to form a closed-loop acid delivery circuit between the circulation tank 1.5, acid delivery pipe, acid injection plug 3.1, acid inlet 2.3, battery pack 2.1, acid outlet 2.4, acid return plug 3.2, acid return pipe 1.7, and circulation tank 1.5. The terminals on battery pack 2.1 are connected to the power supply for internal formation and charging. During this process, the pump draws some of the low-density acid from battery unit 2.2 to circulation tank 1.5. Circulation tank 1.5 cools down the low-density acid. Then, the pump draws the cooled low-density acid through the acid delivery pipe, acid injection plug 3.1, and acid inlet 2.3 to battery unit 2.2, so that the acid in the lead-acid battery will not heat up during electrolysis and will always remain at room temperature.

[0045] 5) After the low-density electrolyte has been internally formed, pull out the acid injection plug 3.1 from the acid inlet 2.3 and the acid return plug 3.2 from the acid outlet 2.4. Use the drive device 7 to flip the flipping frame 4 so that the flipping frame 4 and the battery pack 2.1 are flipped 180 degrees to the acid discharge position. Then, pour out the low-density acid in the battery pack 2.1 through the acid discharge port. After the acid is cleared, use the drive device 7 to flip the flipping frame 4 and the battery pack 2.1 180 degrees to the acid injection position.

[0046] 6) Connect the acid injection plug 3.1 to the acid inlet 2.3 on the battery pack 2.1, and connect the acid return plug 3.2 to the acid outlet 2.4. Open the valves on the concentrated acid switch valve, acid delivery pipe, and acid return pipe 1.7 to allow the concentrated acid tank 1.4, acid delivery pipe, acid injection plug 3.1, acid inlet 2.3, battery pack 2.1, acid outlet 2.4, acid return plug 3.2, acid return pipe 1.7, and circulation tank 1.5 to flow smoothly. The components are connected sequentially, allowing high-density acid to be input into the battery pack 2.1 from the acid injection plug 3.1 and the acid inlet 2.3. After passing through each battery cell 2.2, the acid is discharged from the acid outlet 2.4 and the acid return plug 3.2 into the circulation tank 1.5. When each battery cell 2.2 is filled with high-density acid and there is also some high-density acid in the circulation tank 1.5, the concentrated acid tank 1.4 stops supplying high-density acid to the acid injection plug 3.1 and the acid inlet 2.3.

[0047] 7) Control the on / off valve on the acid delivery pipe to form a closed-loop acid delivery circuit with the circulation tank 1.5, acid delivery pipe, acid injection plug 3.1, acid inlet 2.3, battery pack 2.1, acid outlet 2.4, acid return plug 3.2, acid return pipe 1.7, and circulation tank 1.5. The terminals on battery pack 2.1 are connected to the power supply for internal formation charging. During this process, the pump draws some of the high-density acid from battery unit 2.2 to circulation tank 1.5. Circulation tank 1.5 cools down the high-density acid, and then delivers the cooled high-density acid to battery unit 2.2 through the acid delivery pipe, acid injection plug 3.1, and acid inlet 2.3. This ensures that the acid in the lead-acid battery does not heat up during electrolysis and remains at room temperature until the internal formation is complete.

[0048] The cross-connected series lead-acid battery internal formation system provided in this embodiment of the invention includes a dilute acid tank 1.3, a concentrated acid tank 1.4, a circulation tank 1.5, an acid input device, and an acid return device. The battery pack 2.1 is formed by cross-connected battery cells 2.2. Low-density and high-density acids can be supplied to the battery pack 2.1 through the dilute acid tank 1.3 and the concentrated acid tank 1.4. During the internal formation process of the battery pack 2.1, the circulation tank 1.5, the acid input device, the acid injection plug 3.1, the acid inlet 2.3, and the battery pack 2.1 are all connected in series. The acid outlet 2.4, the acid return plug 3.2, the acid return device, and the circulation tank 1.5 form a closed-loop acid delivery circuit, providing circulating electrolyte for the formation of lead-acid battery 2. The circulating acid carries away the heat generated during charging, and the circulation tank 1.5 can cool the acid, so that the acid in battery pack 2.1 will not heat up during electrolysis and will always be kept at room temperature. This avoids the generation of acid mist due to the high temperature of the acid in battery pack 2.1.

[0049] The cross-series lead-acid battery internal formation system provided in this embodiment of the invention has a battery pack 2.1 placed inside a flipping frame 4. The flipping frame 4 can be automatically flipped between the acid injection position and the acid pouring position by the driving device 7. In this way, the battery pack 2.1 can be automatically flipped during the acid pouring process, reducing the workload of workers and improving the safety of operation.

[0050] In the embodiments provided by the present invention, preferably, the lead-acid battery 2 includes at least one battery pack 2.1. The battery pack 2.1 includes three battery units 2.2 connected in series in a cross manner. Each battery unit 2.2 is provided with an acid inlet 2.3 and an acid outlet 2.4. One acid inlet 2.3 of the battery pack 2.1 is connected to an acid injection plug 3.1, and one acid outlet 2.4 is connected to an acid return plug 3.2. The electrolyte is transported to the battery pack 2.1 along the acid injection plug 3.1 and the acid inlet 2.3, passes through each battery unit 2.2 in sequence, and is then output from the acid outlet 2.4 and the acid return plug 3.2. The battery pack 2.1 includes a first battery unit 2.2, a second battery unit 2.2, and a third battery unit 2.2 connected in a cross manner. The connection method of the first battery unit 2.2, the second battery unit 2.2, and the third battery unit 2.2 is as follows: There are multiple possible connections, for example: the acid inlet 2.3 of the second battery unit 2.2 is connected to the acid injection plug 3.1; the acid outlet 2.4 of the second battery unit 2.2 is connected to the acid inlet 2.3 of the first battery unit 2.2; the acid outlet 2.4 of the first battery unit 2.2 is connected to the acid inlet 2.3 of the third battery unit 2.2; and the acid outlet 2.4 of the third battery unit 2.2 is connected to the acid return plug 3.2. In this way, during internal formation, the acid is input from the acid inlet 2.3 of the second battery unit 2.2, and then sequentially transported from the second battery unit 2.2 to the first battery unit 2.2 and the third battery unit 2.2, and output from the acid outlet 2.4 of the third battery unit 2.2. There can also be other connection methods between the first battery unit 2.2, the second battery unit 2.2, and the third battery unit 2.2, which will not be described in detail.

[0051] In the embodiments provided by the present invention, preferably, the lead-acid battery 2 is provided with an acid drain port, and the acid drain port is provided with a control valve. When the flipping frame 4 is rotated to the acid drain position, the control valve controls the opening and closing of the acid drain port. The acid drain port can be the acid outlet 2.4 and the acid inlet 2.3 on the battery pack 2.1. In this way, when the flipping frame 4 is rotated to the acid drain position, the acid in the battery pack 2.1 is poured out from the acid outlet 2.4 and the acid inlet 2.3. Alternatively, the acid drain port can be a relatively large independent opening provided on each battery cell 2.2. In this way, when the flipping frame 4 is rotated to the acid drain position, the acid in the battery pack 2.1 is poured out from the acid drain port, the acid outlet 2.4 and the acid inlet 2.3.

[0052] In a preferred embodiment of the present invention, an acid recovery tank 5 is further included, which is mounted on the mounting frame 1. When the flip frame 4 is rotated to the acid pouring position, the acid recovery tank 5 is located directly below the acid inlet 2.3 and the acid outlet 2.4. During the rotation of the flip frame 4, the acid inlet 2.3 and the acid outlet 2.4 are closed. When the flip frame 4 is rotated to the acid pouring position, the acid inlet 2.3 and the acid outlet 2.4 are opened, and the acid in the battery pack 2.1 is output from the acid inlet 2.3 and the acid outlet 2.4 to the acid recovery tank 5, thereby realizing the collection and recovery of the acid.

[0053] In another embodiment of the present invention, preferably, in order to enable the flip frame 4 and the battery pack 2.1 to be automatically locked in the acid injection position or the acid dumping position, a positioning mechanism 6 is also provided on the mounting frame 1 or the acid recovery tank 5. The positioning mechanism 6 includes fixed side plates provided on both sides of the acid recovery tank 5 and a first positioning component 6.1 and a second positioning component 6.2 provided on the fixed side plates. The first positioning component 6.1 is used to fix the flip frame 4 in the acid injection position, and the second positioning component 6.2 is used to fix the flip frame 4 in the acid dumping position. For ease of description, the rotation stroke of the flip frame 4 from the acid injection position to the acid dumping position is called the acid dumping rotation stroke, and the rotation stroke of the flip frame 4 from the acid dumping position to the acid injection position is called the acid injection rotation stroke. The acid dumping rotation stroke and the acid injection rotation stroke are two rotation and flipping operations in opposite directions.

[0054] In another embodiment of the present invention, preferably, the fixed side plate includes a first side plate 5.1 and a second side plate 5.2, which are respectively located on opposite sides of the flip frame 4. A first positioning component 6.1 is disposed on the first side plate 5.1, and a second positioning component 6.2 is disposed on the second side plate 5.2. A first locking side plate 4.1 and a second locking side plate 4.2 are respectively disposed on both sides of the flip frame 4. The first locking side plate 4.1 and the second locking side plate 4.2 are provided with locking parts corresponding to the first positioning component 6.1 and the second positioning component 6.2. A rotating shaft is provided on the flip frame 4, and the acid pouring rotation stroke and the acid injection rotation stroke of the flip frame 4 are both rotation operations around the rotating shaft. The first locking side plate 4.1, the second locking side plate 4.2, and the first side plate 5.1 are... Both the first locking side plate 4 and the second locking side plate 5.2 are arranged parallel to the rotation axis. When the flipping frame 4 rotates to the acid injection position, the first locking side plate 4.1 corresponds to the first locking side plate 5.1, and the second locking side plate 4.2 corresponds to the second locking side plate 5.2. At this time, at least one of the first positioning component 6.1 and the second positioning component 6.2 is in a locked state, thereby locking the first locking side plate 4.1 and / or the second locking side plate 4.2. Similarly, when the flipping frame 4 rotates to the acid pouring position, the first locking side plate 4.1 corresponds to the second locking side plate 5.2, and the second locking side plate 4.2 corresponds to the first locking side plate 5.1. At this time, at least one of the first positioning component 6.1 and the second positioning component 6.2 is also in a locked state, thereby locking the second locking side plate 4.2 and / or the first locking side plate 4.1.

[0055] In another embodiment of the present invention, preferably, both the first positioning component 6.1 and the second positioning component 6.2 include a locking element 6.3 and a driving element 6.7. A locking element 6.3 and a driving element 6.7 form a positioning structure. The first positioning component 6.1 and the second positioning component 6.2 may include one positioning structure, or two or more positioning structures, thereby increasing the positioning and locking effect. The locking element 6.3 includes a moving block 6.4 and a locking post 6.5 disposed on the moving block 6.4. A spring element 6.6 is sleeved on the locking post 6.5. The driving element 6.7 includes a connected pressure plate 6. 7.1, drive rod 6.7.2 and drive block 6.7.3, drive block 6.7.3 drives moving block 6.4 and locking pin 6.5 to move, having a locked state locked with the locking part and a separated state separated from the locking part. The locking part includes a locking through hole 4.3 coaxially arranged with locking pin 6.5. In the locked state, locking pin 6.5 is embedded in locking through hole 4.3 to lock the first locking side plate 4.1 and / or the second locking side plate 4.2. In the separated state, locking pin 6.5 is separated from locking through hole 4.3, at which time the first locking side plate 4.1 and the second locking side plate 4.2 are not locked.

[0056] In another embodiment of the present invention, preferably, the first side plate 5.1 and the second side plate 5.2 are provided with movable cavities, which include a horizontal cavity 5.3 and a vertical cavity 5.4 that are perpendicular to each other. The moving block 6.4 is slidably connected in the horizontal cavity 5.3, and the driving block 6.7.3 is slidably connected in the vertical cavity 5.4. The horizontal cavity 5.3 is provided with a moving through hole 5.5 for the locking pin 6.5 to move. The spring 6.6 is sleeved on the locking pin 6.5. One end of the spring 6.6 is fixed to the moving block 6.4, and the other end of the spring 6.6 is fixed to the side wall of the horizontal cavity 5.3 connected to the moving through hole 5.5. The driving block 6.7.3 is provided with a driving inclined surface, and the moving block 6.4 is provided with a pressing inclined surface corresponding to the driving inclined surface. When the pressing plate 6.7.1 is pressed, the driving block 6.7.3... 7.3 Moves downward along the vertical cavity 5.4. The driving inclined surface of the moving block 6.4 presses against the abutting inclined surface, causing the moving block 6.4 to move horizontally along the horizontal cavity 5.3. The locking pin 6.5 is driven to gradually extend from the moving through hole 5.5 until it is embedded in the locking through hole 4.3. This is the locking stroke. During this process, the spring 6.6 is pressed and has elastic force. When the pressure on the abutting plate 6.7.1 disappears, under the elastic force of the spring 6.6, the moving block 6.4 moves in the opposite direction along the horizontal cavity 5.3 until it returns to the initial position. The driving block 6.7.3 is driven to move upward to the initial position. At this time, the locking pin 6.5 is retracted into the moving through hole 5.5. The first locking side plate 4.1 and the second locking side plate 4.2 are not locked. This is the unlocking stroke.

[0057] In another embodiment of the present invention, preferably, the driving device 7 includes a driving unit and a driving shaft 7.5 connected to the driving unit. The driving unit includes a driving motor 7.1, a driving pulley 7.2, and a rotating pulley 7.3. The driving pulley 7.2 is connected to the output shaft of the driving motor 7.1. The driving shaft 7.5 is coaxially and fixedly connected to the rotating pulley 7.3. The driving pulley 7.2 and the rotating pulley 7.3 are driven by a belt 7.4. The flipping frame 4 is provided with a rotating shaft 4.4. A transmission assembly 8 is provided between the rotating shaft 4.4 and the driving shaft 7.5. The driving shaft 7.5 drives the rotating shaft 4.4 through the transmission assembly 8, thereby enabling the flipping frame 4 to be driven to rotate.

[0058] In another embodiment of the present invention, the transmission assembly 8 further includes a circular rotating component 8.1 disposed at the end of the rotating shaft 4.4, and a circular driving component 8.4 disposed at the end of the drive shaft 7.5. During the acid pouring and acid injection rotation strokes, the rotation stroke of the circular driving component 8.4 is greater than that of the circular rotating component 8.1. The circular rotating component 8.1 is fixedly connected to the flipping frame 4 via the rotating shaft 4.4. Therefore, the rotation stroke of the circular rotating component 8.1 is consistent with the rotation stroke of the flipping frame 4, while there is a rotation stroke deviation between the circular driving component 8.4 and the circular rotating component 8.1. For ease of description, the acid pouring and acid injection rotation strokes are divided into three rotation stages: the first rotation stage, the second rotation stage, and the third rotation stage. During the rotation phase, the following description uses the acid-pouring rotation stroke as an example. When the flipping frame 4 is in the acid-injection position, the pressure plate 6.7.1 is pressed down, causing the locking pin 6.5 to embed into the locking through hole 4.3, thereby locking the first locking side plate 4.1 and / or the second locking side plate 4.2. At this time, the drive device 7 works, driving the drive shaft 7.5 and the circular drive component 8.4 to rotate. The rotation of the circular drive component 8.4 causes the pressure on the pressure plate 6.7.1 to gradually disappear, and the locking pin 6.5 gradually moves and retracts into the movement through hole 5.5, so that neither the first locking side plate 4.1 nor the second locking side plate 4.2 is locked. This is the first rotation phase of the acid-pouring rotation stroke. During this process, the rotation of the circular drive component 8.4 causes the locking pin 6.5 to move from the locked state. When the frame moves to the separated state, the circular rotating part 8.1 does not rotate. Then, it enters the second rotation stage of the acid-returning rotation stroke. The circular driving part 8.4 drives the circular rotating part 8.1, causing the flipping frame 4 and battery pack 2.1 to rotate. During this process, the circular driving part 8.4 and the circular rotating part 8.1 move synchronously. Finally, it enters the third rotation stage of the acid-returning rotation stroke. During this process, the circular driving part 8.4 and the circular rotating part 8.1 still rotate synchronously, but the circular driving part 8.4 applies low pressure to the pressure plate 6.7.1, causing the locking pin 6.5 to move synchronously. When the flipping frame 4 moves to the acid-returning position, the locking pin 6.5 also fits into the locking hole to lock the first locking side plate 4.1 and / or the second locking side plate 4.2. This completes the acid-returning rotation stroke. During the acid-returning rotation stroke, when the rotation stroke of the flipping frame 4 and the circular rotating part 8.1 is 180 degrees, the rotation stroke of the circular driving part 8.4 is greater than 180 degrees, such as 190 degrees or 195 degrees. The acid-injecting rotation stroke is the reverse motion of the acid-returning rotation stroke, which will not be elaborated further. The advantage of this setting is that the driving device 7 can flip the flipping frame 4 and the battery pack 2.1, and when the flipping frame 4 and the battery pack 2.1 move to the acid-injecting position or the acid-returning position, the flipping frame 4 and the battery pack 2.1 can be automatically locked without additional operation, reducing the operation process. At the same time, in order to facilitate the locking post 6.5 to be embedded in the locking hole, the locking hole can be set as an oblong hole, or it can be on the locking post 6.A cylindrical through hole is provided at the end of component 5.5, and a movable column is installed inside the cylindrical through hole. The movable column is fixed to the cylindrical through hole by a spring connector. Thus, during the third rotation stage, the movable column gradually extends out from the movable through hole 5.5. However, at this time, the movable column is blocked by the side walls of the first locking side plate 4.1 and / or the second locking side plate 4.2, and the movable column is not inserted into the locking hole. When the flip frame 4 rotates to the acid-pouring position, the movable column, the locking column 6.5, and the locking hole align, and the locking column 6.5 and the movable column are inserted into the locking hole.

[0059] In another embodiment of the present invention, preferably, the circular driving component 8.4 includes a driving wheel, and the circular rotating component 8.1 includes a rotating wheel 8.2. A fan-shaped groove 8.7 is provided on the side wall of the driving wheel. There are three or more fan-shaped grooves 8.7, which are arranged sequentially at intervals along the axial direction of the driving wheel. A fan-shaped block 8.3 is provided on the rotating wheel 8.2. The shape of the fan-shaped block 8.3 is consistent with that of the fan-shaped groove 8.7, but the circumferential length of the fan-shaped block 8.3 is less than that of the fan-shaped groove 8.7. Thus, at the acid injection position, the fan-shaped blocks 8.3 all abut against the first side wall of the fan-shaped groove 8.7, while during the acid pouring rotation stroke... In the first rotational stage, the drive wheel rotates while the rotating wheel 8.2 does not rotate until the second sidewall of the fan-shaped groove 8.7 abuts against the fan-shaped block 8.3, thus entering the second rotational stage of the acid-pouring stroke, causing the drive wheel and the rotating wheel 8.2 to rotate synchronously. Similarly, in the acid-pouring position, the fan-shaped block 8.3 abuts against the second sidewall of the fan-shaped groove 8.7. In the first rotational stage of the acid-injection stroke, the drive wheel rotates while the rotating wheel 8.2 does not rotate until the second sidewall of the fan-shaped groove 8.7 abuts against the fan-shaped block 8.3, thus entering the second rotational stage of the acid-injection stroke, causing the drive wheel and the rotating wheel 8.2 to rotate synchronously.

[0060] In another embodiment of the present invention, preferably, there are two drive wheels, namely a first drive wheel 8.5 and a second drive wheel 8.6, which are coaxially arranged. The radial dimension of the first drive wheel 8.5 is larger than that of the second drive wheel 8.6. The first drive wheel 8.5 and the second drive wheel 8.6 are fixedly connected by a connecting screw 8.8. The first drive wheel 8.5 is connected to the drive shaft 7.5. The second drive wheel 8.6 is sleeved on the rotating shaft. The rotating wheel 8.2 is disposed in the gap between the first drive wheel 8.5 and the second drive wheel 8.6. A fan-shaped groove 8.7 is disposed on the side of the first drive wheel 8.5 and the second drive wheel 8.6 corresponding to the rotating wheel 8.2. Fan-shaped blocks 8.7 are disposed on both sides of the rotating wheel 8.2. 3. The fan-shaped blocks 8.3 on both sides of the rotating wheel 8.2 are respectively restricted to rotation within the fan-shaped grooves 8.7 between the first drive wheel 8.5 and the second drive wheel 8.6. A pressing member 8.9 is provided on the first drive wheel 8.5. In the third rotation stage, the pressing member 8.9 can press against the pressing plate 6.7.1, thereby causing the moving block 6.4 and the locking pin 6.5 to move from the separated state to the locked state. When the flipping frame 4 rotates to the acid injection position, the locking pin 6.5 on the first locking side plate 4.1 is embedded into the locking hole of the first locking side plate 4.1 to fix the flipping frame 4. When the flipping frame 4 rotates to the acid pouring position, the locking pin 6.5 on the second locking side plate 4.2 is embedded into the locking hole of the first locking side plate 4.1 to fix the flipping frame 4.

[0061] In another embodiment of the present invention, preferably, it further includes a motion seat 9 movably connected to the mounting frame 1. The acid injection plug 3.1 and the acid return plug 3.2 are both mounted on the motion seat 9. The motion seat 9 moves up and down along the mounting frame 1 and has a first working position and a second working position. In the first working position, the acid injection plug 3.1 and the acid return plug 3.2 are connected to the acid inlet 2.3 and the acid outlet 2.4 of the battery pack 2.1. In the second working position, the acid injection plug 3.1 and the acid return plug 3.2 are separated from the acid inlet 2.3 and the acid outlet 2.4 of the battery pack 2.1.

[0062] In another embodiment of the present invention, preferably, a drive assembly is further included, which is disposed on the drive shaft 7.5 and is used to drive the motion seat 9 to move up and down along the mounting frame 1. The mounting frame 1 includes a first frame 1.1 and a second frame 1.2 disposed opposite to each other. A sliding limit frame 1.1.1 is provided on the first frame 1.1, and a rectangular motion opening 1.2.1 is provided on the second frame 1.2. A sliding block is provided at one end of the motion seat 9, and the sliding block is slidably connected in the sliding limit frame 1.1.1. The other end of the motion seat 9 is slidably disposed in the rectangular motion opening 1.2.1. An elastic blocking member 1.8 is provided in both the sliding limit frame 1.1.1 and the rectangular opening. The drive assembly can be a linkage mechanism, etc. When the drive assembly drives the motion seat 9 to move upward along the mounting frame 1, the motion seat 9 and the sliding block press against the elastic blocking member 1.8 and are elastic.

[0063] In another embodiment of the present invention, preferably, the driving assembly includes a driving disk 7.6, on which an arc-shaped contraction portion 7.7 is provided. The radial dimension of the arc-shaped contraction portion 7.7 is smaller than the dimension of the circular portions 7.8 at other positions of the driving disk 7.6. When the arc-shaped contraction portion 7.7 corresponds to the moving seat 9, the moving seat 9 is in a first working position; when the circular portion 7.8 of the driving disk 7.6 corresponds to the moving seat 9, the moving seat 9 is in a second working position. When the flipping frame 4 is in the acid injection position, the arc-shaped contraction portion 7.7 on the driving disk 7.6 corresponds to the moving seat 9, at which time the moving seat 9 is in the first working position, and acid injection is performed. Plug 3.1 and acid return plug 3.2 are connected to the acid inlet 2.3 and acid outlet 2.4 of battery pack 2.1, respectively. The pressure plate 6.7.1 is pressed, causing the locking pin 6.5 to be embedded in the locking through hole 4.3, thereby locking the first locking side plate 4.1. During the first rotation stage of the acid return stroke, the drive disk 7.6 rotates with the drive shaft 7.5. The drive disk 7.6 drives the moving seat 9 to move upward and press against the elastic blocking member 1.8. At the end of the first rotation stage of the acid return stroke, the circular part 7.8 on the drive disk 7.6 abuts against the moving seat 9. At this time, the moving seat 9 moves to the second working position. The acid injection plug 3.1 and acid return plug 3.2 are separated from the acid inlet 2.3 and acid outlet 2.4 of the battery pack 2.1, and at this time, the acid injection plug 3.1 and acid return plug 3.2 do not obstruct the rotation of the flip frame 4, allowing the flip frame 4 to rotate in the second and third rotation stages of the acid reversing stroke. In the second and third rotation stages of the acid reversing stroke, the circular part 7.8 of the drive disk 7.6 corresponds to the motion seat 9, and the motion seat 9 remains in the second working position. In the first and second rotation stages of the acid injection stroke, the circular part 7.8 of the drive disk 7.6 corresponds to the motion seat 9. Correspondingly, at the end of the third rotational stage of the acid injection stroke, the arc-shaped contraction part 7.7 of the drive disk 7.6 corresponds to the motion seat 9. Under the action of the elastic blocking member 1.8, the motion seat 9 moves to the first working position. The acid injection plug 3.1 and the acid return plug 3.2 are connected to the acid inlet 2.3 and the acid outlet 2.4 of the battery pack 2.1, respectively. In this way, during the acid pouring and injection process, the drive device 7 can automatically operate the acid injection plug 3.1 and the acid return plug 3.2 without the need for manual unplugging or plugging of the acid injection plug 3.1 and the acid return plug 3.2, reducing the workload of workers and improving the safety of operation.

[0064] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A cross-series lead-acid battery internal formation system, comprising an acid storage tank, a circulation tank, an acid input device, and an acid return device, wherein the lead-acid battery is equipped with an acid circulation plug, characterized in that, It also includes a mounting frame and a flip frame disposed on the mounting frame. At least one battery pack formed in series is placed in the flip frame. The mounting frame is provided with a drive device connected to the flip frame. The flip frame can be driven by the drive device to flip between an acid injection position and an acid discharge position. It also includes an acid recovery tank, which is mounted on the mounting frame, and a positioning mechanism, which is mounted on the mounting frame or the acid recovery tank, for fixing the flipping frame at the acid injection position or the acid pouring position; The positioning mechanism includes fixed side plates disposed on both sides of the acid recovery tank and a first positioning component and a second positioning component disposed on the fixed side plates. The first positioning component is used to fix the flip frame at the acid injection position, and the second positioning component is used to fix the flip frame at the acid pouring position. The drive unit includes a drive unit and a drive shaft connected to the drive unit. A rotating shaft is provided on the flip frame, and a transmission assembly is provided between the rotating shaft and the drive shaft. The transmission assembly includes a circular rotating component provided at the end of the rotating shaft, and a circular drive component is provided at the end of the drive shaft. In the acid pouring rotation stroke and the acid injection rotation stroke, the rotation stroke of the circular drive component is greater than the rotation stroke of the circular rotating component. The circular rotating component is fixedly connected to the flip frame through the rotating shaft. Therefore, the rotation stroke of the circular rotating component is consistent with the rotation stroke of the flip frame, but there is a rotation stroke deviation between the circular drive component and the circular rotating component. The flip frame is provided with a first locking side plate and a second locking side plate on both sides, and the first locking side plate and the second locking side plate are provided with locking parts corresponding to the first positioning component and the second positioning component.

2. The cross-series lead-acid battery internal formation system according to claim 1, characterized in that, The acid storage tank includes a dilute acid tank and a concentrated acid tank, and the acid input device includes an acid delivery pipe, which is connected to the dilute acid tank, the concentrated acid tank and the circulation tank.

3. The cross-series lead-acid battery internal formation system according to claim 2, characterized in that, The acid circulation plug includes an acid injection plug and an acid return plug. The acid injection plug is connected to the acid input device, and the acid return plug is connected to the acid reflux device.

4. The cross-series lead-acid battery internal formation system according to claim 3, characterized in that, The lead-acid battery includes at least one battery pack, which includes three battery cells connected in a cross-connection. Each battery cell is provided with an acid inlet and an acid outlet. One of the acid inlets of the battery pack is connected to the acid injection plug, and one of the acid outlets is connected to the acid return plug. The electrolyte is transported to the battery pack through the acid injection plug and the acid inlet, passes through each battery cell in sequence, and is then output from the acid outlet and the acid return plug.

5. The cross-series lead-acid battery internal formation system according to claim 1, characterized in that, The lead-acid battery is provided with an acid drain port, and the acid drain port is provided with a control valve. When the flip frame is rotated to the acid drain position, the control valve controls the acid drain port to open.

6. The cross-series lead-acid battery internal formation system according to claim 4, characterized in that, When the flipping frame is rotated to the acid pouring position, the acid recovery tank is located directly below the acid inlet and the acid outlet.

7. The cross-series lead-acid battery internal formation system according to claim 1, characterized in that, Both the first positioning component and the second positioning component include a locking component and a driving component. The locking component includes a moving block and a locking pin disposed on the moving block. A spring is disposed on the locking pin. The driving component includes a pressure plate, a driving rod and a driving block connected to each other. The driving block drives the locking pin to move and has a locked state of locking with the locking part and a separated state of separating from the locking part.

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