CN112271414A - Vacuum acid filling system and method for AGM battery - Google Patents
Vacuum acid filling system and method for AGM battery Download PDFInfo
- Publication number
- CN112271414A CN112271414A CN202011142400.8A CN202011142400A CN112271414A CN 112271414 A CN112271414 A CN 112271414A CN 202011142400 A CN202011142400 A CN 202011142400A CN 112271414 A CN112271414 A CN 112271414A
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- acid
- acid filling
- vacuum
- valve
- regulating valve
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- 239000002253 acid Substances 0.000 title claims abstract description 214
- 238000000034 method Methods 0.000 title claims description 29
- 238000003860 storage Methods 0.000 claims abstract description 22
- 238000005303 weighing Methods 0.000 claims abstract description 18
- 238000005086 pumping Methods 0.000 claims abstract description 11
- 230000001105 regulatory effect Effects 0.000 claims description 50
- 239000007788 liquid Substances 0.000 claims description 10
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 230000033228 biological regulation Effects 0.000 claims 1
- 239000003638 chemical reducing agent Substances 0.000 claims 1
- 230000007423 decrease Effects 0.000 claims 1
- 239000003365 glass fiber Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/06—Lead-acid accumulators
- H01M10/12—Construction or manufacture
- H01M10/121—Valve regulated lead acid batteries [VRLA]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The utility model provides a AGM battery vacuum acid filling system, the system includes acid storage container, converges the ware and surveys sour container, converge the ware and fix survey sour container's notes sour hole department, converge the ware through the runner pipe with acid storage container connects, the runner pipe is last from top to bottom to have set gradually ooff valve and governing valve, converge ware top connection vacuum pump, the bottom of surveying sour container is provided with weighing sensor. In the acid filling system, the acid filling hole on the acid measuring container is connected with the confluence device, the confluence device is connected with the vacuum pump, acid liquor remaining in the pipeline is avoided through vacuum pumping, and the consistency of the actual acid filling amount and the theoretical acid filling amount is ensured through adjusting the opening of the adjusting valve on the pipeline.
Description
Technical Field
The invention relates to an AGM battery vacuum acid filling system and method, and belongs to the technical field of storage batteries.
Background
An AGM battery is a valve-regulated sealed lead acid battery using an ultrafine glass fiber separator (AGM), which is widely used in an automobile start-stop system due to its excellent characteristics such as safety, maintenance-free property, and long life. The AGM battery adopts a poor liquid type design, the partition plate adopts superfine glass fiber, the pole group adopts a tight assembly mode, and compared with the storage battery with the same specification, the cycle life of the AGM battery is three times that of the common lead-acid battery, and the AGM battery has longer service life. AGM batteries have high requirements on the starting performance and the service life of the AGM batteries as starting batteries of automobiles, and the precise control of the unit acid filling amount in the battery preparation process has a crucial influence on the performances.
The existing acid filling amount measuring method cannot perform vacuum pumping operation due to the structural design problem of the liquid injection hole, only acid can be discharged through manual operation on equipment, acid liquid weighed in advance is injected into the battery in the acid filling process, acid liquid is easy to remain at the acid injection hole, and therefore the measured unit lattice acid amount and the actually produced acid filling amount have large errors.
Disclosure of Invention
In the acid filling system, an acid filling hole on an acid measuring container is connected with a confluence device, the confluence device is connected with a vacuum pump, acid liquor remaining in a pipeline is avoided through vacuum pumping, and the consistency of the actual acid filling amount and the theoretical acid filling amount is ensured through adjusting the opening of an adjusting valve on the pipeline.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the utility model provides a AGM battery vacuum acid filling system, the system includes acid storage container, converges the ware and surveys sour container, converge the ware top through the runner pipe with acid storage container connects, the last ooff valve and the governing valve of having set gradually from top to bottom of runner pipe, converge the ware export through the filling tube with survey sour container's notes sour jogged joint, converge the ware top through evacuation pipeline and vacuum pump connection, the bottom of surveying sour container is provided with weighing sensor, the governing valve aperture is adjusted through control circuit.
According to the AGM battery vacuum acid filling system, the outlet at the bottom of the junction station is fixedly connected with the top of the sealing seat, and the bottom of the sealing seat is hermetically fixed in the acid filling hole of the acid measuring container.
Above-mentioned AGM battery vacuum acid filling system, the top of converging the ware is cylindricly, and the bottom is for leaking hopper-shaped, and the volume of converging the ware is 200mL, has 3 cm's interval between the circulation pipeline that its top is connected and the evacuation pipeline, and the external diameter of circulation pipeline and evacuation pipeline is 10mm, and the internal diameter is 5 mm.
In the AGM battery vacuum acid filling system, the junction station is also provided with a vacuum degree display.
According to the AGM battery vacuum acid filling system, the acid measuring container and the battery unit cell have the same structure and specification.
An AGM battery vacuum acid filling method, wherein the AGM battery vacuum acid filling system is used for carrying out acid filling, the vacuum pump is used for accelerating the collection of residual acid liquor, the switch valve is used for starting and stopping acid filling operation, the regulating valve is used for determining the opening degree of the valve and then determining the flow rate of the acid liquor, and the actual acid filling amount of a storage battery unit cell is accurately controlled to be within an allowable error range; before the acid filling production operation, firstly, the opening of an adjusting valve is adjusted, and the adjusting method comprises the following steps:
a. a container simulating a storage battery cell is used as an acid measuring container, and a weighing sensor is arranged at the bottom of the acid measuring container;
b. closing the switch valve, and reading and recording the opening position information of the regulating valve;
c. adding acid liquor into an acid storage container, dividing the calibrated acid filling amount of the acid measuring container into N parts, wherein N is a natural number of 5-10, and limiting the calibrated acid filling amount with 1/N of the acid filling amount each time, namely the threshold value of acid filling each time, wherein the time consumed for filling acid each time is t;
d. opening a switch valve, starting an acid filling program, wherein the first acid filling time is t; after the time t is up, starting a vacuum pump connected with the confluence device to pump vacuum, ensuring that residual liquid at the circulation pipeline and the acid injection hole is completely converged and flows into the acid measuring container, and closing the vacuum pump; weighing the weight before and after acid filling through a weighing sensor at the bottom of the acid measuring container, and if the weight difference is smaller than a set acid filling threshold value, adjusting the opening of an adjusting valve to increase the acid filling amount; otherwise, the opening degree of the regulating valve is reduced;
e. after the opening of the regulating valve is adjusted, performing second acid filling, wherein the second acid filling procedure is the same as the first acid filling procedure, and if the weight difference before and after the second acid filling is not consistent with the acid filling threshold value, continuously adjusting the opening of the regulating valve;
e. repeating the step d for a plurality of times until the difference between the acid filling amount and the acid filling threshold value is within a specified error, and locking the opening of the regulating valve until the opening of the regulating valve is not regulated, namely the opening position of the valve during acid filling;
f. after the opening of the regulating valve is locked, the acid measuring container is replaced by a storage battery, the switch valve is directly opened for acid filling, the acid filling amount is the calibration capacity, and after the acid filling is finished, the vacuum pumping is carried out to collect residual liquid.
In the vacuum acid filling method for the AGM battery, the vacuum degree of the vacuumizing in the step d is 20 KPa.
In the vacuum acid filling method for the AGM battery, in the step e, the error between the actual acid filling amount of the battery cell and the theoretical amount is +/-4 g.
According to the AGM battery vacuum acid filling method, the adjusting valve is a butterfly valve, the opening degree of the adjusting valve is 90 degrees when the adjusting valve is in a fully open state, the opening degree of the adjusting valve is 0 degree when the adjusting valve is in a fully closed state, the opening degree of the adjusting valve is 100 parts in the range of 0-90 degrees, the opening degree adjustment is controlled by one stepping motor, and the stepping motor is connected with a rotating shaft of the adjusting valve after being decelerated by a decelerator.
In the vacuum acid filling method for the AGM battery, in the steps d and e, the variable quantity of the opening of the regulating valve is gradually reduced along with the increase of the times of regulating the opening of the regulating valve.
The invention has the beneficial effects that: the acid measuring container is hermetically connected with the junction station, the top end of the junction station is connected with the vacuum pump, and after acid filling is stopped, a vacuumizing process is started to prevent residual acid liquor from being discharged from the acid filling hole, so that the deviation between the actual acid filling amount and the theoretical acid filling amount is avoided; by utilizing the vacuum space provided by the confluence device, a certain distance is formed between the vacuumizing pipeline and the acid liquor circulating pipeline, so that when the vacuum pump is started for vacuumizing, the acid liquor remaining in the circulating pipeline is not influenced by the vacuumizing process, can smoothly drip into the confluence device and flows into the acid measuring container; before formal acid filling, the opening degree of the regulating valve is continuously regulated through the control circuit, so that the optimal opening degree of the regulating valve is selected, the actual acid filling amount and the theoretical acid filling amount in the acid measuring container are within an error range, accurate control of the acid filling amount of the battery cells is realized, and the consistency of the acid filling amount of each cell of the battery can be ensured.
Drawings
FIG. 1 is a schematic view of the acid filling system according to the present invention.
In the figure: 1. an acid storage container; 2. a junction station; 2-1, a vacuum degree display; 3. an acid measuring container; 4. opening and closing the valve; 5. adjusting a valve; 6. a vacuum pump; 7. a weighing sensor; 8. and (4) a sealing seat.
Detailed Description
The present invention will be further described with reference to the following examples.
Referring to fig. 1, an AGM battery vacuum acid filling system comprises an acid storage container 1, a junction station 2 and an acid measuring container 3, wherein a filling pipeline connected with an outlet of the junction station 2 is hermetically connected with an acid filling hole of the acid measuring container 3 through a seal seat 8, an inlet of the junction station 2 is connected with the acid storage container 1 through a circulation pipeline, the circulation pipeline is sequentially provided with a switch valve 4 and an adjusting valve 5 from top to bottom, the opening degree of the adjusting valve is adjusted through a control circuit, the top of the junction station 2 is connected with a vacuum pump 6 through a vacuum pumping pipeline, the top of the junction station is cylindrical, the bottom of the junction station is funnel-shaped, the volume of the junction station is 200mL, a distance of 3cm is formed between the circulation pipeline and the vacuum pumping pipeline connected with the top of the junction station, the outer diameter of the circulation pipeline and the vacuum pumping pipeline are both 10mm, the inner diameter of the circulation pipeline and the vacuum pumping pipeline, the residual acid liquor in the circulation pipeline is accelerated to flow downwards, the acid liquor in the circulation pipeline is prevented from being sucked back along the vacuumizing pipeline under the action of vacuumizing, the top of the junction station is provided with a vacuum degree display 2-1, the bottom of the acid measuring container 3 is provided with a weighing sensor 7, vacuumizing is performed after acid filling is finished, the vacuum degree in the system is read in real time through the vacuum degree display, the residual acid liquor in the circulation pipeline and at an acid injection hole enters the acid measuring container in the vacuumizing process, actual measurement of the actual acid filling amount is performed through the weighing sensor, and the acid measuring container 3 simulates a real battery cell, and the structure and the specification of the real battery cell are the same as those of the battery cell. The acid storage container and the confluence device are fixed on the acid injection workbench through a fixing frame. Acid system is irritated in vacuum is provided with a plurality of, corresponds with actual battery cell quantity, for example is provided with six groups, and six survey sour containers and set up side by side in the shell to through the bolt-up in the shell, it is convenient to dismantle.
The AGM battery vacuum acid filling system is used for filling acid, the vacuum pump is used for accelerating the collection of residual acid liquor, the switch valve 4 is used for starting and stopping acid filling operation, the regulating valve 5 is used for determining the opening degree of the valve and then determining the flow rate of the acid liquor, and the actual acid filling amount of a battery cell is accurately controlled to enable the actual acid filling amount to be controlled within an allowable error range; before the acid filling production operation, firstly, the opening of an adjusting valve is adjusted, and the adjusting method comprises the following steps:
a. a container simulating a storage battery cell is used as an acid measuring container, and a weighing sensor 7 is arranged at the bottom of the acid measuring container;
b. closing the switch valve 4, and reading and recording the opening position information of the regulating valve 5;
c. adding acid liquor into an acid storage container 1, dividing the calibrated acid filling amount of the acid measuring container into N parts, wherein N is a natural number of 5-10, and limiting the calibrated acid filling amount with 1/N of the acid filling amount each time, namely the acid filling threshold value each time, wherein the time consumed for filling acid each time is t;
d. opening a switch valve 4, starting an acid filling program, wherein the first acid filling time is t; after the time t is up, starting a vacuum pump 6 connected with the confluence device 2 to vacuumize, controlling the vacuum degree to be 20KPa, ensuring that all residual liquid at the circulation pipeline and the acid injection hole are converged and flow into the acid measuring container, and closing the vacuum pump 6; weighing the weight before and after acid filling through a weighing sensor 7 at the bottom of the acid measuring container 3, and if the weight difference is smaller than a set acid filling threshold value, adjusting the opening degree of an adjusting valve 5 to increase the acid filling amount; otherwise, the opening degree of the regulating valve is reduced; the regulating valve 5 is a butterfly valve, the opening degree is 90 degrees when the regulating valve is in a fully open state, the opening degree is 0 degree when the regulating valve is in a fully closed state, the regulating valve is divided into 100 parts in the range of the opening degree of 0-90 degrees, the regulating variable quantity is g% each time, and the regulating valve is regulated according to the actual acid filling quantity.
e. After the opening of the regulating valve is adjusted, performing second acid filling, wherein the second acid filling procedure is the same as the first acid filling procedure, and if the weight difference before and after the second acid filling is not consistent with the acid filling threshold value, continuously adjusting the opening of the regulating valve 5;
e. repeating the step d for a plurality of times until the difference between the acid filling amount and the acid filling threshold value is within +/-4 g of a specified error, and locking the opening of the regulating valve until the opening of the regulating valve is not regulated, namely the opening position of the valve during acid filling;
f. after the opening of the regulating valve is locked, the acid measuring container is replaced by a battery, the switch valve is directly opened for acid filling, the acid filling amount is the calibration capacity, and after the acid filling is finished, the vacuum pumping is carried out to collect residual liquid.
In the adjusting process of the adjusting valve in the steps d to e, along with the increase of the times of adjusting the opening of the adjusting valve, the variable quantity of the opening of the adjusting valve is gradually reduced, so that the subsequent adjustment is more accurate. The vacuumizing operation is avoided in the weighing process, and the influence of the external atmospheric pressure on the weighing sensor is avoided, so that the weighing is more real and accurate.
Claims (10)
1. The vacuum acid filling system for the AGM battery is characterized in that: the system comprises an acid storage container (1), a junction station (2) and an acid measurement container (3), wherein the top end of the junction station (2) is connected with the acid storage container (1) through a circulation pipeline, a switch valve (4) and an adjusting valve (5) are sequentially arranged on the circulation pipeline from top to bottom, an outlet of the junction station (2) is connected with an acid injection hole of the acid measurement container (3) through a filling pipeline, the top of the junction station (2) is connected with a vacuum pump (6) through a vacuum pumping pipeline, a weighing sensor (7) is arranged at the bottom of the acid measurement container (3), and the opening degree of the adjusting valve (5) is adjusted through a control circuit.
2. The AGM battery vacuum acid filling system according to claim 1, wherein: the outlet at the bottom of the junction station (2) is fixedly connected with the top of a sealing seat (8), and the bottom of the sealing seat (8) is sealed and fixed in an acid injection hole of the acid measuring container (3).
3. The AGM battery vacuum acid filling system according to claim 2, wherein: the top of the flow combiner (2) is cylindrical, the bottom of the flow combiner is funnel-shaped, the volume of the flow combiner is 200mL, a distance of 3cm is reserved between a flow pipeline and a vacuumizing pipeline which are connected to the top end of the flow combiner, the outer diameter of the flow pipeline and the outer diameter of the vacuumizing pipeline are both 10mm, and the inner diameter of the flow pipeline and the inner diameter of the vacuumizing pipeline are both 5 mm.
4. The AGM battery vacuum acid filling system according to claim 3, wherein: and a vacuum degree display (2-1) is also arranged on the junction station (2).
5. The AGM battery vacuum acid filling system according to claim 4, wherein: the acid measuring container (3) and the battery unit cell have the same structure and specification.
6. The vacuum acid filling method for the AGM battery is characterized by comprising the following steps: the method is used for acid filling by using the AGM battery vacuum acid filling system of any one of claims 1 to 5, wherein a vacuum pump is used for accelerating the collection of residual acid liquor, a switch valve (4) is used for starting and stopping the acid filling operation, an adjusting valve (5) is used for determining the opening degree of the valve and then determining the flow rate of the acid liquor, and the actual acid filling amount of a storage battery unit cell is accurately controlled to be within an allowable error range; before the acid filling production operation, firstly, the opening of an adjusting valve is adjusted, and the adjusting method comprises the following steps:
a. a container simulating a storage battery cell is used as an acid measuring container, and a weighing sensor (7) is arranged at the bottom of the acid measuring container;
b. closing the switch valve (4), and reading and recording the opening position information of the regulating valve (5);
c. adding acid liquor into an acid storage container (1), dividing the calibrated acid filling amount of the acid measuring container into N parts, wherein N is a natural number of 5-10, limiting the calibrated acid filling amount of which the acid filling amount is 1/N each time, namely an acid filling threshold value each time, and the time consumed by acid filling each time is t;
d. opening a switch valve (4), starting an acid filling program, wherein the first acid filling time is t; after the time t is up, starting a vacuum pump (6) connected with the confluence device (2) for vacuumizing to ensure that all residual liquid at the circulation pipeline and the acid injection hole is converged and flows into the acid measuring container, and closing the vacuum pump (6); weighing the weight before and after acid filling through a weighing sensor (7) at the bottom of the acid measuring container (3), and if the weight difference is smaller than a set acid filling threshold value, increasing the opening degree of the regulating valve (5) and increasing the acid filling amount; otherwise, the opening degree of the regulating valve is reduced;
e. after the opening of the regulating valve is adjusted, performing second acid filling, wherein the second acid filling procedure is the same as the first acid filling procedure, and if the weight difference before and after the second acid filling is not consistent with the acid filling threshold value, continuously adjusting the opening of the regulating valve (5);
e. repeating the step d for a plurality of times until the difference between the acid filling amount and the acid filling threshold value is within a specified error, and locking the opening of the regulating valve until the opening of the regulating valve is not regulated, namely the opening position of the valve during acid filling;
f. after the opening of the regulating valve is locked, the acid measuring container is replaced by a storage battery, the switch valve is directly opened for acid filling, the acid filling amount is the calibration capacity, and after the acid filling is finished, the vacuum pumping is carried out to collect residual liquid.
7. The AGM battery vacuum acid filling method according to claim 6, wherein: the vacuum degree of the step d is 20 KPa.
8. The AGM battery vacuum acid filling method according to claim 7, wherein: in the step e, the error between the actual acid filling amount of the battery unit cell and the theoretical amount is +/-4 g.
9. The AGM battery vacuum acid filling method according to claim 8, wherein: the regulating valve (5) is a butterfly valve, the opening degree of the regulating valve is 90 degrees when the regulating valve is in a fully open state, the opening degree of the regulating valve is 0 degree when the regulating valve is in a fully closed state, the opening degree of the regulating valve (5) is divided into 100 parts in the range of 0-90 degrees, the opening degree regulation is controlled by a stepping motor, and the stepping motor is connected with a rotating shaft of the regulating valve (5) after being decelerated by a speed reducer.
10. The AGM battery vacuum acid filling method according to claim 9, wherein: in the steps d to e, as the number of times of adjusting the opening of the regulating valve increases, the variation of the opening of the regulating valve gradually decreases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011142400.8A CN112271414B (en) | 2020-10-23 | 2020-10-23 | AGM battery vacuum acid filling system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011142400.8A CN112271414B (en) | 2020-10-23 | 2020-10-23 | AGM battery vacuum acid filling system and method |
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| CN112271414A true CN112271414A (en) | 2021-01-26 |
| CN112271414B CN112271414B (en) | 2023-12-12 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115295977A (en) * | 2022-08-05 | 2022-11-04 | 风帆有限责任公司 | Acid filling method for start-stop AGM battery |
| CN115295977B (en) * | 2022-08-05 | 2024-05-17 | 风帆有限责任公司 | Acid filling method for AGM battery during start-stop operation |
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| CN115295977B (en) * | 2022-08-05 | 2024-05-17 | 风帆有限责任公司 | Acid filling method for AGM battery during start-stop operation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112271414B (en) | 2023-12-12 |
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