Device and method for discharging storage battery pole group into groove through vacuum compression

Abstract

The invention discloses a device and a method for vacuum compression groove discharging of a storage battery pole group, and relates to the technical field of storage battery production. According to the device, through cooperative use of all the mechanisms, the function of automatically clamping the pole group is achieved, manual interference is not needed, the labor cost is reduced, and the safety performance is also improved; according to the method disclosed by the invention, the polar group is sleeved with the vacuum compression bag, vacuumized and heat-sealed, and redundant parts are cut after entering the groove, so that the pressure and friction between the polar group and the battery groove are reduced, the polar group is easy to enter the groove, and the problem of polar group damage caused by mechanical groove entering is solved. And the pole group is wrapped by the vacuum compression bag, so that the problem of short circuit of the pole group caused by lead powder falling due to groove entering friction of the pole plate is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of battery production, and in particular to a device and method for vacuum compressing a lower tank of a battery pole group. Background Art

[0002] At present, most of the valve-regulated lead-acid batteries are tightly assembled structures, so the process of placing the battery pole group in the battery tank is extremely critical. The existing traditional method of placing the battery pole group in the battery tank mostly uses a tooling mold corresponding to the battery specifications and models, uses mechanical pressure to press the battery pole group tightly, and then uses mechanical action to force the battery pole group into the battery tank.

[0003] For example, the utility model with authorization announcement number CN209056557U discloses a pole group slotting device for battery production, including a mechanical claw for simultaneously clamping multiple pole groups, a lifting assembly for driving the mechanical claw to move up and down, a guide rail for the lifting assembly to carry the mechanical claw to move horizontally, and a pushing assembly; the pushing assembly includes a first power member, a connecting plate connected to the telescopic rod of the first power member, a plurality of push rods connected to the connecting plate, and a pushing block provided at the end of the push rod, the pushing block can move up and down and extend into the mechanical claw to push multiple pole groups downward into the battery slot body at the same time.

[0004] For another example, the invention application with publication number CN103259053A discloses a fully automatic battery combination pole group slotting machine, including a material receiving and erecting mechanism, a manipulator mechanism, a shaping mechanism, an assembling mechanism, a battery box lifting mechanism, a battery box output mechanism, a frame and a first guide rail installed on the frame, wherein the material receiving and erecting mechanism is installed at the entrance of the frame, the shaping mechanism and the material receiving and erecting mechanism are installed side by side, the battery box lifting mechanism is located directly below the shaping mechanism and installed side by side with the material receiving and erecting mechanism, the manipulator mechanism and the assembling mechanism are located above the material receiving and erecting mechanism and are installed on the first guide rail, and the output mechanism is installed in the frame and crosses the material receiving and erecting mechanism and the battery box lifting mechanism.

[0005] However, in the above-mentioned prior art, it is necessary to design and manufacture corresponding tooling molds for batteries of different specifications, resulting in excessive tooling mold manufacturing costs and a large amount of tooling mold management costs. In addition, since mechanical pressure is used to force the pressure, the battery pole groups are often damaged, resulting in a large number of defective and scrapped products in the battery production process, causing a waste of costs; or some damaged pole groups are difficult to detect from the outside after being put into the slot, resulting in defective products flowing into the next process, or even into the market, causing more losses. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a device and method for vacuum compressing a lower tank of a battery pole group, aiming to solve the problems of pole group damage and cost waste caused by the above-mentioned mechanical lower tank.

[0007] The specific technical solutions are as follows:

[0008] The present invention provides a method for vacuum compressing a battery pole group into a tank, wherein the battery comprises a battery tank comprising a plurality of cells, each cell being equipped with a pole group, and the method for vacuum compressing a battery pole group into a tank comprises the following steps:

[0009] (1) Place the electrode group into a vacuum compression bag with an opening at the top;

[0010] (2) Using an exhaust device to extract the air from the vacuum compression bag, so that the pole group is compressed in the vacuum compression bag, and then heat-sealing the opening of the vacuum compression bag;

[0011] (3) Assembling the vacuum compression bag containing the electrode group obtained in step (2) into the battery container as a whole;

[0012] (4) Cut open the portion of the vacuum compression bag that is exposed outside the battery compartment to release the internal pressure of the electrode group, and cut off the excess portion of the vacuum compression bag that is exposed outside the battery compartment.

[0013] Preferably, the vacuum compression bag is a PE (polyethylene) bag, and the thickness of the vacuum compression bag is 10C-15C, wherein "C" is a thickness unit, and 1C is equal to 0.01 mm.

[0014] Preferably, in step (2), when the vacuum compression bag is evacuated, the negative pressure in the vacuum compression bag is 80-100 kPa.

[0015] By optimizing the material and thickness of the vacuum compression bag and controlling the negative pressure of the vacuum, it is possible to ensure that the battery pole group is subjected to uniform and appropriate pressure during the compression process, thereby avoiding damage or deformation of the pole group due to uneven force. This helps to improve the overall quality and performance of the battery and reduce the defective rate.

[0016] The present invention also provides a device for completing the above-mentioned battery pole group vacuum compression tank lowering method, comprising:

[0017] A frame, wherein the frame has a vacuum heat sealing station and a slotting and cutting station;

[0018] A negative pressure mechanism is arranged near the vacuum heat sealing station of the frame, and comprises an exhaust pipe for exhausting the vacuum compression bag, and a vacuum pump connected to the exhaust pipe;

[0019] The heat sealing mechanism is arranged near the vacuum heat sealing station of the frame, and comprises a pair of clamping plates for clamping the mouth of the vacuum compression bag, wherein at least one clamping plate is a movable clamping plate that can be moved horizontally, and at least one of the two clamping plates is provided with a thermal resistance wire so that the clamping plate can heat-seal the vacuum compression bag;

[0020] A manipulator, used to take the vacuum compression bag containing the electrode group and heat-sealed from the vacuum heat-sealing station and place it into the battery slot located at the slot cutting station;

[0021] The cutting mechanism is arranged at the slotting cutting station of the frame, and is used for cutting the part of the vacuum compression bag exposed outside the battery slot after entering the slot and cutting off the excess part of the vacuum compression bag exposed outside the battery slot.

[0022] The robot is a prior art, and its two arms can be moved to take and place the vacuum compression bag containing the pole group and after heat sealing.

[0023] Specifically, the exhaust pipe is provided with an exhaust valve for controlling the opening and closing of the exhaust pipe;

[0024] The end of the air extraction pipe is provided with a distribution plate, and the bottom surface of the distribution plate is provided with a row of air extraction small tubes arranged in a straight line, and the total length of the row of air extraction small tubes is less than the length of the top opening of the vacuum compression bag.

[0025] The vacuum valve on the vacuum pipe and a row of small vacuum tubes on the bottom of the distribution plate are designed to achieve flexible control of the vacuum process and uniform vacuuming, thereby improving the compression efficiency of the vacuum compression bag, saving energy, and extending the service life of the vacuum equipment.

[0026] It should be noted that the vacuum pipe from the vacuum valve to the distribution plate section is a rigid rubber tube, which enables the distribution plate to move up and down when preparing for vacuuming and when it is finished.

[0027] The heat sealing mechanism comprises a mounting plate, and the clamping plate located on the outside is connected to the mounting plate through a horizontal guide column;

[0028] The clamping plate located on the inner side is sleeved on the guide column, and the mounting plate is provided with a first cylinder for driving the clamping plate located on the inner side to translate along the horizontal guide column;

[0029] The frame is provided with a second cylinder for driving the installation plate to translate. The first cylinder and the second cylinder are designed because they overlap with the working position of the manipulator and need to be avoided;

[0030] On the other hand, the first cylinder drives the inner clamping plate to translate along the horizontal guide column, and the second cylinder drives the mounting plate to translate, thus achieving high-precision control of the heat sealing mechanism. This design ensures that the spacing and position between the two clamping plates are accurately adjusted during the heat sealing process, thereby ensuring the accuracy and consistency of the heat sealing effect, and realizing semi-automatic production and heat sealing operations.

[0031] Furthermore, the vacuum heat sealing station is provided with a placement plate for placing the vacuum compression bag containing the electrode group, and the frame is provided with a third cylinder for driving the placement plate to rise and fall. By driving the placement plate to rise and fall by the third cylinder, the vacuum compression bag containing the electrode group can be conveniently placed at a suitable height for heat sealing operation.

[0032] Specifically, a conveyor belt for placing batteries is provided at the slotting and cutting station, and the conveying direction of the conveyor belt is along the distribution direction of the vacuum heat sealing station and the slotting and cutting station.

[0033] Specifically, the frame is provided with a horizontal rack spanning the vacuum heat sealing station and the slotting and cutting station, and a movable seat cooperating with the horizontal rack and capable of translationally moving along the horizontal rack. The movable seat is also provided with a vertical rack capable of vertical movement, and the manipulator is provided at the bottom end of the vertical rack.

[0034] Specifically, the cutting mechanism comprises a cutting knife, the blade of which is arranged horizontally and faces upstream in the conveying direction of the conveyor belt;

[0035] The cutting mechanism further comprises a fourth cylinder arranged on the frame and used for driving the cutting knife to move horizontally. Because the cutting knife will overlap with the position of the robot, it needs to move horizontally.

[0036] Beneficial effects of the present invention:

[0037] The device of the present invention realizes the function of automatically clamping the pole group through the coordinated use of various mechanisms, without manual intervention, thus reducing labor costs and improving safety performance;

[0038] The method of the present invention covers the pole group with a vacuum compression bag, evacuates and heat seals, cuts off the excess part after entering the slot, reduces the pressure and friction between the pole group and the battery slot, makes the pole group easy to be placed in the slot, and solves the problem of pole group damage caused by mechanical placement. The pole group is wrapped in a vacuum compression bag to avoid the problem of pole group short circuit caused by lead powder falling off due to friction of the pole plate entering the slot. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a three-dimensional schematic diagram of a device for vacuum compressing a lower tank of a battery pole group according to the present invention;

[0040] Figure 2 It is a three-dimensional schematic diagram of a device for vacuum compressing a lower tank of a battery pole group according to the present invention;

[0041] Figure 3 It is a three-dimensional bottom schematic diagram of the device for vacuum compressing the lower tank of the battery pole group of the present invention;

[0042] Figure 4 It is a front view of the device for vacuum compressing the lower tank of a battery pole group according to the present invention;

[0043] Figure 5 It is a left view of the device for vacuum compressing the lower tank of a battery pole group according to the present invention;

[0044] Figure 6 A top view of a device for vacuum compressing a lower tank of a battery pole group according to the present invention;

[0045] Markings in the figure: 1-exhaust pipe, 11-exhaust valve, 12-distribution plate, 121-a row of small exhaust tubes, 2-vacuum pump, 3-clamping plate, 31-thermal resistance wire, 4-manipulator, 41-horizontal rack, 42-moving seat, 43-vertical rack, 5-mounting plate, 51-first cylinder, 52-second cylinder, 6-placing plate, 61-third cylinder, 7-conveyor belt, 8-cutter, 81-fourth cylinder. DETAILED DESCRIPTION

[0046] Example 1

[0047] Depend on Figures 1 to 6 As shown, the present invention provides a device for vacuum compressing the lower tank of a battery pole group, comprising:

[0048] The frame has a vacuum heat sealing station and a slotting and cutting station;

[0049] The negative pressure mechanism is arranged near the vacuum heat sealing station of the frame, and comprises an exhaust pipe 1 for exhausting the vacuum compression bag, and a vacuum pump 2 connected to the exhaust pipe 1;

[0050] The heat sealing mechanism is arranged near the vacuum heat sealing station of the frame, and comprises a pair of clamping plates 3 for clamping the mouth of the vacuum compression bag, wherein at least one clamping plate 3 is a movable clamping plate 3 that can be moved horizontally, and at least one of the two clamping plates 3 is provided with a thermal resistance wire 31 so that the clamping plate 3 can heat-seal the vacuum compression bag (in the figure of the present invention, both clamping plates are provided with a thermal resistance wire);

[0051] Manipulator 4 is used to take and place the vacuum compression bag containing the electrode group and heat-sealed from the vacuum heat-sealing station into the battery slot located at the slot cutting station; the manipulator here belongs to the prior art, and its two arms can be moved to take and place the vacuum compression bag containing the electrode group and heat-sealed;

[0052] The cutting mechanism is arranged at the slotting cutting station of the frame, and is used for cutting the part of the vacuum compression bag exposed outside the battery slot after entering the slot and cutting off the excess part of the vacuum compression bag exposed outside the battery slot.

[0053] Specifically, in order to achieve flexible control of the vacuum process and uniform vacuuming, a vacuum valve 11 for controlling the opening and closing of the vacuum pipe is provided on the vacuum pipe 1; a distribution plate 12 is provided at the end of the vacuum pipe 1, and a row of small vacuum tubes 121 arranged in a straight line are provided on the bottom surface of the distribution plate 12. The total length of the row of small vacuum tubes 121 is less than the length of the top opening of the vacuum compression bag, which improves the compression efficiency of the vacuum compression bag, saves energy, and extends the service life of the vacuum equipment.

[0054] In addition, the vacuum pipe from the vacuum valve to the distribution plate section is a rigid rubber tube, which enables the distribution plate to move up and down when preparing for vacuuming and when it is finished.

[0055] The heat sealing mechanism includes a mounting plate 5, the outer clamping plate 3 is connected to the mounting plate 5 through a horizontal guide column; the inner clamping plate 3 is sleeved on the guide column, and the mounting plate 5 is provided with a first cylinder 51 for driving the inner clamping plate to translate along the horizontal guide column; the frame is provided with a second cylinder 52 for driving the mounting plate 5 to translate.

[0056] The first cylinder and the second cylinder are designed on the one hand because they overlap with the working position of the robot and need to be avoided; on the other hand, the first cylinder drives the inner clamping plate to translate along the horizontal guide column, and the second cylinder drives the mounting plate to translate, thereby achieving high-precision control of the heat sealing mechanism.

[0057] Specifically, a placement plate 6 for placing the vacuum compression bag containing the electrode group is provided on the vacuum heat sealing station, and a third cylinder 61 for driving the placement plate 6 to rise and fall is provided on the frame. By driving the placement plate to rise and fall by the third cylinder, the vacuum compression bag containing the electrode group can be conveniently placed at a suitable height for heat sealing operation.

[0058] Specifically, a conveyor belt 7 for placing batteries is provided at the slotting and cutting station, and the conveying direction of the conveyor belt 7 is along the distribution direction of the vacuum heat sealing station and the slotting and cutting station.

[0059] Specifically, the frame is provided with a horizontal rack 41 spanning the vacuum heat sealing station and the slotting and cutting station, and a moving seat 42 that cooperates with the horizontal rack 41 and can be translated along the horizontal rack 41. The moving seat 42 is also provided with a vertical rack 43 that can be vertically moved, and a manipulator 4 is provided at the bottom end of the vertical rack 43. The horizontal and vertical movements of the moving seat are operated by an electric box to control the movement and pick-up and placement of the manipulator.

[0060] Specifically, the cutting mechanism includes a cutting knife 8, the blade of which is arranged horizontally and faces upstream in the conveying direction of the conveyor belt 7; the cutting mechanism also includes a fourth cylinder 81 provided on the frame for driving the translation of the cutting knife 8. Because the position during cutting overlaps with the position of the robot, translation is required, and when cutting, the cutting knife 8 is translated to a specified position by the fourth cylinder.

[0061] When the present invention is used, the pole group to be placed in the vacuum compression bag with the top opening is placed on the placement plate 6, and the third cylinder 61 is used to control the lifting position of the placement plate 6; a row of small suction tubes 121 of the distribution plate 12 at the end of the suction pipe 1 is placed at the opening of the vacuum compression bag, and the suction valve 11 is opened to extract the air in the vacuum compression bag, so that the pole group is compressed in the vacuum compression bag, and then the distribution plate is returned to its position; two clamping plates 3 with heated thermal resistance wires 31 are clamped by the first cylinder 51 and the second cylinder 52 At the mouth of the vacuum compression bag, heat seal the opening of the vacuum compression bag, and then return the splint to its position; use the manipulator 4 to take the vacuum compression bag containing the pole group and heat-sealed from the vacuum heat sealing station and place it in the battery slot located at the slot cutting station; translate the cutter 8 out through the fourth cylinder 81, place it above the conveyor belt 7, start the conveyor belt 7, and use the cutter 8 to cut the part of the vacuum compression bag exposed outside the battery slot after entering the slot to release the internal pressure of the pole group, and cut off the excess part of the vacuum compression bag exposed outside the battery slot, and then return the cutter 8 to its position.

[0062] Example 2

[0063] The present invention provides a method for vacuum compressing a battery pole group into a tank, wherein the battery comprises a battery tank comprising a plurality of cells, each cell being equipped with a pole group, and the device in Example 1 is used to vacuum compress the battery pole group into a tank, and the method for vacuum compressing the battery pole group into a tank comprises the following steps:

[0064] (1) Place the electrode group into a vacuum compression bag with an opening at the top;

[0065] (2) Using an exhaust device to extract the air from the vacuum compression bag, so that the pole group is compressed in the vacuum compression bag, and then heat-sealing the opening of the vacuum compression bag;

[0066] (3) Assembling the vacuum compression bag containing the electrode group obtained in step (2) into the battery container as a whole;

[0067] (4) Cut open the portion of the vacuum compression bag that is exposed outside the battery compartment to release the internal pressure of the electrode group, and cut off the excess portion of the vacuum compression bag that is exposed outside the battery compartment.

[0068] The vacuum compression bag may be a PE bag with a thickness of 10C-15C.

[0069] In step (2), when the vacuum compression bag is evacuated, the negative pressure in the vacuum compression bag can be selected to be 80-100 kPa.

Claims

1. A method for vacuum compressing a battery pole group into a tank, wherein the battery comprises a battery tank comprising a plurality of cells, each cell being equipped with a pole group, characterized in that: The battery pole group vacuum compression tank lowering method comprises the following steps: (1) Place the electrode group into a vacuum compression bag with an opening at the top; (2) Using an exhaust device to extract the air from the vacuum compression bag, so that the pole group is compressed in the vacuum compression bag, and then heat-sealing the opening of the vacuum compression bag; (3) Assembling the vacuum compression bag containing the electrode group obtained in step (2) into the battery container as a whole; (4) Cut open the portion of the vacuum compression bag that is exposed outside the battery compartment to release the internal pressure of the electrode group, and cut off the excess portion of the vacuum compression bag that is exposed outside the battery compartment.

2. The method for vacuum compression of battery pole groups according to claim 1, characterized in that: The vacuum compression bag is a PE bag, and the thickness of the vacuum compression bag is 10C-15C.

3. The method for vacuum compression of battery pole groups according to claim 1, characterized in that: In step (2), when the vacuum compression bag is evacuated, the negative pressure in the vacuum compression bag is 80-100 kPa.

4. A device for completing the method for vacuum compression of battery pole groups as claimed in any one of claims 1 to 3, characterized in that: include: A frame, wherein the frame has a vacuum heat sealing station and a slotting and cutting station; A negative pressure mechanism is arranged near the vacuum heat sealing station of the frame, and comprises an exhaust pipe for exhausting the vacuum compression bag, and a vacuum pump connected to the exhaust pipe; The heat sealing mechanism is arranged near the vacuum heat sealing station of the frame, and comprises a pair of clamping plates for clamping the mouth of the vacuum compression bag, wherein at least one clamping plate is a movable clamping plate that can be moved horizontally, and at least one of the two clamping plates is provided with a thermal resistance wire so that the clamping plate can heat-seal the vacuum compression bag; A manipulator, used to take the vacuum compression bag containing the electrode group and heat-sealed from the vacuum heat-sealing station and place it into the battery slot located at the slot cutting station; The cutting mechanism is arranged at the slotting cutting station of the frame, and is used for cutting the part of the vacuum compression bag exposed outside the battery slot after entering the slot and cutting off the excess part of the vacuum compression bag exposed outside the battery slot.

5. The device according to claim 4, characterized in that: The exhaust pipe is provided with an exhaust valve for controlling the opening and closing of the exhaust pipe; The end of the air extraction pipe is provided with a distribution plate, and the bottom surface of the distribution plate is provided with a row of air extraction small tubes arranged in a straight line, and the total length of the row of air extraction small tubes is less than the length of the top opening of the vacuum compression bag.

6. The device according to claim 4, characterized in that: The heat sealing mechanism comprises a mounting plate, and the clamping plate located on the outside is connected to the mounting plate through a horizontal guide column; The clamping plate located on the inner side is sleeved on the guide column, and the mounting plate is provided with a first cylinder for driving the clamping plate located on the inner side to translate along the horizontal guide column; The frame is provided with a second cylinder for driving the installation plate to translate.

7. The device according to claim 6, characterized in that: The vacuum heat sealing station is provided with a placement plate for placing the vacuum compression bag containing the pole group, and the frame is provided with a third cylinder for driving the placement plate to rise and fall.

8. The device according to claim 6, characterized in that: The slotting and cutting station is provided with a conveyor belt for placing batteries, and the conveying direction of the conveyor belt is along the distribution direction of the vacuum heat sealing station and the slotting and cutting station.

9. The device according to claim 8, characterized in that: The frame is provided with a horizontal rack that spans the vacuum heat sealing station and the slotting and cutting station, and a movable seat that cooperates with the horizontal rack and can translate along the horizontal rack. The movable seat is also provided with a vertical rack that can move vertically, and the bottom end of the vertical rack is provided with the manipulator.

10. The device according to claim 8, characterized in that: The cutting mechanism comprises a cutting knife, the blade of which is arranged horizontally and faces upstream in the conveying direction of the conveyor belt; The cutting mechanism further comprises a fourth cylinder which is arranged on the frame and is used for driving the cutting blade to move in translation.

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