Water content testing and adjusting equipment for drying lead plaster of lead-acid battery

Abstract

The invention discloses moisture content testing and adjusting equipment for drying lead paste of a lead-acid battery. The moisture content testing and adjusting equipment comprises a curing chamber main body, a steam spray pipe assembly, a heating piece and a polar plate frame, the steam spray pipe assembly is arranged on one side of the curing chamber main body; the steam spraying pipe assembly is provided with a plurality of sets of air outlet holes, and electromagnetic valves are arranged on the multiple sets of air outlet holes. The heating piece is arranged in the curing chamber main body; the polar plate rack is arranged in the middle of the curing chamber main body and comprises a frame plate, a placing plate and a traction piece; a containing cavity is formed in the frame plate. The placing plate is suspended in the placing cavity through a traction piece, and a tension sensor is arranged in the traction piece. The invention relates to the technical field of lead-acid battery pole plate curing and drying, and aims to adaptively adjust steam and heat energy conveyed to a pole plate according to the water loss of lead plaster on the pole plate, meet the requirements of the pole plate on temperature and humidity in different stages, avoid the conditions of cracks and the like caused by too fast water loss of the pole plate, and improve the product quality. And the mechanical strength and conductivity of the formed polar plate are improved.

Description

Technical Field

[0001] The invention belongs to the field of lead-acid batteries and relates to a plate curing and drying technology, in particular to a moisture content testing and regulating device for drying lead paste of lead-acid batteries. Background Art

[0002] During the production process of lead-acid batteries, lead paste is applied to the surface of the plate. The lead paste still contains 20-25% free lead and 8-10% water, so the green plate needs to be cured. The curing effect is to reduce the content of free lead, while making the grid and active material more firmly bonded, reducing interface resistance and improving charging efficiency. Curing directly affects the mechanical strength and electrical properties of the plate after formation, and thus affects the capacity and life of the lead-acid battery.

[0003] At present, the curing operation of the plate is usually completed with the help of a curing chamber. Specifically, a steam pipeline, a heating pipeline and an exhaust and dehumidification system are arranged in the curing chamber to meet the supply requirements of the plate temperature and humidity during the curing operation. However, in the prior art, since the control of the temperature and humidity in the curing box is only controlled by an independent control terminal, and during the application process, the temperature and humidity in the curing box cannot be guaranteed to be consistent everywhere due to the existence of dead corners and airflow direction problems in the curing box, when the curing operation is performed, the temperature and humidity will cause the local plate to lose water too quickly and crack, thereby affecting the mechanical strength and electrical properties of the plate after formation.

[0004] Therefore, a moisture content testing and regulating device for drying lead paste of lead-acid batteries is needed to solve the above problems. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art; to this end, the present invention proposes a moisture content testing and adjustment device for drying lead paste of lead-acid batteries, so that the steam and heat energy delivered to the electrode plate can be adaptively adjusted according to the water loss of the lead paste on the electrode plate, so as to meet the temperature and humidity requirements of the electrode plate at different stages, thereby improving the mechanical strength and conductive performance of the electrode plate after formation. The present invention provides a plate rack including a frame plate, a placement plate and a traction member, and forms a plurality of placement chambers on the frame plate, and makes the placement chambers correspond to the air outlets and the heating member of the steam nozzle assembly one by one, so that the temperature and humidity in the placement chamber are adjusted and controlled by the corresponding air outlets and the heating member, and a tension sensor is built in the traction member to monitor the weight of the plate on the placement plate in real time, so that the heating temperature of the heating member and the flow rate of steam sprayed by the steam nozzle assembly can be adaptively adjusted according to the linear relationship between the weight change of the plate on the placement plate and the temperature and humidity, so as to ensure that the temperature and humidity of the plate in each placement chamber can always be kept within an appropriate range during the curing process, so as to avoid the occurrence of cracks in the plate due to excessively high temperature and low humidity in the local plate, so as to achieve the purpose of improving the mechanical strength and electrical performance of the plate after curing.

[0006] To achieve the above-mentioned object, the first aspect of the present invention provides a moisture content testing and regulating device for drying lead paste of lead-acid batteries, comprising a curing chamber body, a steam spray pipe assembly, a heating element and a plate frame;

[0007] The steam spray pipe assembly is arranged on one side of the curing chamber body;

[0008] The steam spray pipe assembly has a plurality of groups of air outlet holes extending into the interior of the curing chamber body, and each of the plurality of groups of air outlet holes is provided with an independently controlled solenoid valve;

[0009] The heating element is arranged inside the curing chamber body, matches the number of the air outlet holes, and is located in the same horizontal plane as the corresponding air outlet holes;

[0010] The electrode frame is arranged in the middle of the curing chamber body, and comprises a frame plate, a placement plate with a through hole at the bottom, and a traction member;

[0011] A plurality of independent placement chambers are formed inside the frame plate, and the placement chambers correspond to the positions of the air outlet holes and the heating element;

[0012] The placement plate is suspended in the placement chamber through the traction member, and the traction member is equipped with a tension sensor;

[0013] The tension sensor is connected to the corresponding solenoid valve and the controller of the heating element via an external terminal signal.

[0014] Furthermore, the frame plate is built with a plurality of partition plates, and the placement chamber is formed between two adjacent partition plates;

[0015] One end of the traction member is connected to the lower surface of the partition plate.

[0016] Furthermore, the middle portion of the upper surface of the partition plate bulges outward to form an arc-shaped structure.

[0017] Further, the curing chamber body has a door panel;

[0018] When the door panel is closed, a placement chamber with a central opening is formed between two adjacent partition panels and the curing chamber body, which is used for transferring the steam output by the steam nozzle assembly and the heat of the heating element.

[0019] Furthermore, the electrode frame also includes closing plates arranged on both sides of the partition plate. When the closing plates are in operation, the two closing plates, the two partition plates and the curing chamber body can surround and form a closed placement chamber.

[0020] Further, the closing plate is hinged to the partition plate;

[0021] The lower surface of the partition plate is movably connected with a push cylinder, and the push cylinder is hinged to the closing plate;

[0022] The pushing cylinders and the pulling members are arranged in a staggered manner, and a gap is reserved between the pushing cylinders and the placing plates.

[0023] Furthermore, the closing plate is fixedly installed between the two partition plates, and the closing plate is configured as an electric blind.

[0024] Furthermore, an exhaust and dehumidification system is provided on a side of the curing chamber body away from the steam spray pipe assembly.

[0025] Furthermore, four traction members are provided, and are detachably connected to the upper surface of the corner position of the placement plate respectively.

[0026] Furthermore, the upper surface of the corner positions of the placement plate is provided with lifting rings, and the traction member includes a traction wire rope with a hook.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] A plate rack including a frame plate, a placement plate and a traction member is provided, and a plurality of placement chambers are formed on the frame plate, and the placement chambers correspond to the air outlets and the heating member of the steam nozzle assembly one by one, so that the temperature and humidity in the placement chamber are adjusted and controlled by the corresponding air outlets and the heating member, and a tension sensor is built into the traction member to monitor the weight of the plate on the placement plate in real time, so that the heating temperature of the heating member and the flow rate of steam sprayed by the steam nozzle assembly can be adaptively adjusted according to the linear relationship between the weight change of the plate on the placement plate and the temperature and humidity, so as to ensure that the temperature and humidity of the plate in each placement chamber can always be kept within an appropriate range during the curing process, so as to avoid the occurrence of cracks in the plate due to excessively high temperature and low humidity in the local plate, so as to achieve the purpose of improving the mechanical strength and electrical performance of the plate after curing. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It is a structural cross-sectional view of a moisture content testing and adjusting device for drying lead paste of a lead-acid battery according to an embodiment of the present invention;

[0031] Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle;

[0032] Figure 3 It is a structural cross-sectional view of a moisture content testing and adjusting device for drying lead paste of lead-acid batteries according to another embodiment of the present invention;

[0033] Figure 4 It is a schematic structural diagram of a prevention chamber of a moisture content testing and regulating device for drying lead paste of lead-acid batteries in another embodiment of the present invention.

[0034] Figure Number:

[0035] 1. Curing chamber body; 11. Door panel; 2. Steam nozzle assembly; 21. Air outlet; 3. Heating element; 4. Plate rack; 41. Frame plate; 411. Partition plate; 42. Placement plate; 43. Traction element; 431. Tension sensor; 44. Closing plate; 5. Push cylinder; 6. Exhaust and dehumidification system. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figure 1 to Figure 2 As shown, an embodiment of the first aspect of the present invention provides a moisture content testing and adjustment device for drying lead paste of a lead-acid battery, comprising a curing chamber main body 1, a steam nozzle assembly 2, a heating element 3 and a plate frame 4.

[0038] The steam nozzle assembly 2 is arranged on one side of the curing chamber body 1 and is used to provide steam to humidify the electrode plates.

[0039] Specifically, the steam nozzle assembly 2 has multiple groups of air outlet holes 21 extending into the interior of the curing chamber body 1, and each group of the air outlet holes 21 is provided with an independently controlled solenoid valve, that is, the flow rate of steam discharged from the air outlet holes 21 is controlled by the solenoid valve, so that the humidity in the curing chamber body 1 is maintained within the required threshold range.

[0040] In addition, the heating element 3 is arranged inside the curing chamber body 1 and matches the number of the air outlet holes 21, and is located in the same horizontal plane as the corresponding air outlet holes 21, so as to provide heat to the electrode plates in the horizontal plane direction and cooperate with the air outlet holes 21 to complete the curing and drying of the electrode plates.

[0041] In this embodiment, the electrode frame 4 is arranged in the middle of the curing chamber body 1 and includes a frame plate 41 , a placement plate 42 with a through hole at the bottom, and a traction member 43 .

[0042] It should be noted that a plurality of independent placement chambers are formed inside the frame plate 41, and the placement chambers correspond to the positions of the air outlet holes 21 and the heating element 3, that is, each placement chamber has a set of air outlet holes 21 and heating elements 3 for curing and drying the plates in the placement chamber, and a plurality of independently controlled curing chambers are formed by adjusting the air outlet holes 21 and heating elements 3 corresponding to each placement chamber, thereby effectively avoiding the situation in which the upper and lower temperatures and humidities are inconsistent due to the curing chamber body 1 being too large, thereby causing the local plate temperature to be too high and the humidity to be too low, resulting in cracks.

[0043] The placement plate 42 is suspended in the placement chamber by the traction member 43, and the traction member 43 is equipped with a tension sensor 431. The weight of the placement plate 42 and the electrode on the placement plate 42 is monitored in real time by the tension sensor 431, so as to infer the water loss of the lead paste on the electrode.

[0044] The tension sensor 431 is connected to the corresponding solenoid valve and the controller of the heating element 3 through an external terminal signal, so as to compare the amplitude of the change of the tension sensor 431 per unit time with the linear relationship between the temperature and humidity during the curing and drying process, so as to adaptively adjust the flow rate of the air outlet 21 and the heating temperature of the heating element 3. For example, when the amplitude of the change of the tension sensor 431 per unit time is too fast, it indicates that the water loss rate is fast. Therefore, it is necessary to increase the air outlet of the air outlet 21 and correspondingly reduce the temperature of the heating element 3 to avoid the occurrence of cracking due to excessive water loss of the plate.

[0045] It should be noted that the linear relationship between the water loss amplitude of the plate and the temperature and humidity during the curing and drying process can be obtained by normal state measurement. Specifically, by recording the weight change of the plate before and after a given time under different temperature and humidity conditions.

[0046] In a further embodiment, the frame plate 41 has a plurality of partition plates 411 built therein, the placement chamber is formed between two adjacent partition plates 411 , and one end of the traction member 43 is connected to the lower surface of the partition plate 411 .

[0047] It should be noted that in order to prevent the moisture formed by the lead paste from interfering with the curing of other placement chambers during the curing and drying process of the plate, the shape of the partition plate 411 is limited here. Specifically, the middle part of the upper surface of the partition plate 411 bulges outward to form an arc-shaped structure, so that the moisture can be discharged along the two sides of the placement chamber to prevent the moisture from falling directly into the next placement chamber, thereby affecting the curing effect of the plate in the lower placement chamber.

[0048] In other embodiments, the curing chamber body 1 has a door panel 11 .

[0049] When the door panel 11 is closed, a placement chamber with a central opening is formed between two adjacent partition panels 411 and the curing chamber body 1 for transferring the steam output by the steam nozzle assembly 2 and the heat of the heating element 3 .

[0050] In a further embodiment, in order to prevent the circulation of gas from interfering with the data measured by the tension sensor 431, a closing plate 44 is added to the plate frame 4 to enable the placement chamber to form an openable and closable closed chamber, so that when the temperature and humidity need to be adjusted in the middle, the placement chamber can be enclosed to form a closed chamber to accurately obtain the reading of the tension sensor 431, thereby obtaining the water loss of the plate, and completing the temperature and humidity adjustment control based on the water loss, thereby achieving the purpose of improving the accuracy of temperature and humidity control.

[0051] Specifically, the electrode frame 4 also includes closing plates 44 arranged on both sides of the partition plate 411. When the closing plates 44 are in operation, the two closing plates 44, the two partition plates 411 and the curing chamber body 1 can surround and form a closed placement chamber.

[0052] like Figure 1 and Figure 2 As shown, in one example, the closing plate 44 is hinged to the dividing plate 411 .

[0053] The lower surface of the partition plate 411 is movably connected with a push cylinder 5, and the push cylinder 5 is hinged to the closing plate 44, that is, the deflection of the closing plate 44 is controlled by the push cylinder 5, thereby realizing the opening or closing of the placement chamber.

[0054] It should be noted that in order to prevent the operation of the closing plate 44 and the pushing cylinder 5 from interfering with the components, further limitations are required. Specifically, the pushing cylinder 5 and the pulling member 43 are arranged in a staggered manner, and a gap is reserved between the pushing cylinder 5 and the placing plate 42.

[0055] like Figure 3 and Figure 4 As shown, in another example, the closing plate 44 is fixedly installed between the two partition plates 411, and the closing plate 44 is configured as an electric blind, that is, the closing plate 44 includes a frame and a plurality of rotating blades, and two adjacent rotating blades and the rotating blades and the top wall and bottom wall of the inner cavity of the frame can be rotated to a fitting state to form a closed structure, thereby completing the opening or closing of the placement chamber. Through this arrangement, the space required to be reserved for the closing plate 44 in the horizontal direction can be effectively reduced, making the structure of the device more compact.

[0056] It should be noted that the electric blinds have a built-in motor, and the motor and the multiple rotating blades are connected through a synchronous belt to synchronously control the deflection of the multiple rotating blades to open or close the placement chamber.

[0057] In other embodiments, an exhaust and dehumidification system 6 is provided on a side of the curing chamber body 1 away from the steam spray pipe assembly 2 for gas circulation.

[0058] In a further embodiment, in order to facilitate placing the electrode plate on the placement plate 42 and taking the cured electrode plate out of the curing chamber body 1, four traction members 43 are provided, and are detachably connected to the upper surface of the corner position of the placement plate 42 respectively.

[0059] Among them, the upper surface of the corner position of the placement plate 42 is provided with a lifting ring, and the traction member 43 includes a traction wire rope with a hook, and the strength is increased by providing the traction wire rope.

[0060] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A moisture content testing and adjustment device for lead paste drying of lead-acid batteries, characterized in that: It comprises a curing chamber body (1), a steam spray pipe assembly (2), a heating element (3) and a plate frame (4); The steam spray pipe assembly (2) is arranged on one side of the curing chamber body (1); The steam spray pipe assembly (2) has a plurality of groups of air outlet holes (21) extending into the interior of the curing chamber body (1), and each of the plurality of groups of air outlet holes (21) is provided with an independently controlled electromagnetic valve; The heating element (3) is arranged inside the curing chamber body (1), matches the number of the air outlet holes (21), and is located in the same horizontal plane as the corresponding air outlet holes (21); The electrode frame (4) is arranged in the middle of the curing chamber body (1), and comprises a frame plate (41), a placement plate (42) with a through hole at the bottom, and a traction member (43); A plurality of independent placement chambers are formed inside the frame plate (41), and the placement chambers correspond to the positions of the air outlet holes (21) and the heating element (3); The placement plate (42) is suspended in the placement chamber via the traction member (43), and the traction member (43) is provided with a tension sensor (431) built therein; The tension sensor (431) is connected to the corresponding solenoid valve and the controller of the heating element (3) via an external terminal signal.

2. The moisture content testing and adjusting device for drying lead paste of lead-acid batteries according to claim 1, characterized in that: The frame plate (41) has a plurality of partition plates (411) built therein, and the placement chamber is formed between two adjacent partition plates (411); One end of the traction member (43) is connected to the lower surface of the partition plate (411).

3. The moisture content testing and adjusting device for drying lead paste of lead-acid batteries according to claim 2, characterized in that: The middle portion of the upper surface of the partition plate (411) bulges outwards to form an arc-shaped structure.

4. The moisture content testing and adjusting device for drying lead paste of lead-acid batteries according to claim 2, characterized in that: The curing chamber body (1) has a door panel (11); When the door panel (11) is closed, a placement chamber with a central opening is formed between two adjacent partition panels (411) and the curing chamber body (1), which is used for transferring the steam output by the steam nozzle assembly (2) and the heat of the heating element (3).

5. The moisture content testing and adjusting device for drying lead paste of lead-acid batteries according to claim 4, characterized in that: The electrode frame (4) further comprises closing plates (44) arranged on both sides of the partition plate (411); when the closing plates (44) are in operation, the two closing plates (44), the two partition plates (411) and the curing chamber body (1) are able to surround and form a closed placement chamber.

6. The moisture content testing and adjusting device for drying lead paste of lead-acid batteries according to claim 5, characterized in that: The closing plate (44) is hinged to the partition plate (411); The lower surface of the partition plate (411) is movably connected to a push cylinder (5), and the push cylinder (5) is hinged to the closing plate (44); The pushing cylinders (5) and the pulling members (43) are arranged in a staggered manner, and a gap is reserved between the pushing cylinders (5) and the placing plates (42).

7. The moisture content testing and adjusting device for drying lead paste of lead-acid batteries according to claim 5, characterized in that: The closing plate (44) is fixedly installed between the two partition plates (411), and the closing plate (44) is configured as an electric shutter.

8. The moisture content testing and adjusting device for drying lead paste of lead-acid batteries according to claim 1, characterized in that: An exhaust and dehumidification system (6) is provided on the side of the curing chamber body (1) away from the steam spray pipe assembly (2).

9. The moisture content testing and adjusting device for drying lead paste of lead-acid batteries according to claim 1, characterized in that: Four traction members (43) are provided, and are respectively detachably connected to the upper surface of the corner positions of the placement plate (42).

10. The moisture content testing and adjusting device for lead paste drying of lead-acid batteries according to claim 9, characterized in that: The upper surface of the placement plate (42) at the corner position is provided with a lifting ring, and the traction member (43) comprises a traction wire rope with a hook.

Images