CN219590479U - Equipment for recording deep discharge state of lead-acid battery - Google Patents
Equipment for recording deep discharge state of lead-acid battery Download PDFInfo
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- CN219590479U CN219590479U CN202320220758.0U CN202320220758U CN219590479U CN 219590479 U CN219590479 U CN 219590479U CN 202320220758 U CN202320220758 U CN 202320220758U CN 219590479 U CN219590479 U CN 219590479U
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Abstract
An apparatus for recording a deep discharge condition of a lead acid battery, comprising: the two ends of the load module are connected with the lead-acid battery and used for reducing the voltage of the lead-acid battery; the control module comprises a signal input end and a signal output end, wherein the signal input end is used for measuring the real-time voltage value of the lead-acid battery; the signal output end is connected with the timing module, and the starting and stopping of the timing module are controlled according to the real-time voltage value; the timing module is used for recording the discharge time length from the lower limit of the rated working voltage to the set termination voltage interval of the lead-acid battery according to the start-stop signal of the control module; and the data acquisition module is used for acquiring the discharge time measured by the timing module. The present utility model provides standardized characterization data for assessing lead acid battery failure status.
Description
Technical Field
The utility model relates to special equipment for a lead-acid battery, in particular to equipment for recording the deep discharge state of the lead-acid battery.
Background
The lead-acid battery is the secondary lead-acid battery with the largest market consumption at present, has the advantages of wide material sources, low price, safety, reliability, large capacity, large discharge intensity and the like, and occupies the main stream of the market in the high-power and large-capacity fields of electric tractors, vehicle and ship starting, communication stations and the like. Compared with lithium ion batteries, lead-acid batteries have shorter service lives and remarkable waste, so that various lead-acid battery capacity restoration methods are appeared on the market.
For repairing the capacity of the lead-acid battery, no matter what repairing liquid or charging method is adopted, deep discharging technical treatment is required before repairing and charging, and the basic repairing process is common in the industry; the lead acid battery industry generally refers to the continued discharge from a lead acid battery at the lower limit of rated operating voltage as deep discharge, which, while widely employed, is relatively less studied for deep discharge conditions and their repair charging processes; for the failure lead-acid batteries with different deep discharge states, different repair processes are needed to be adopted for treatment.
Therefore, determining the deep discharge state of the lead-acid battery is only beneficial, is beneficial to repairing the group series connection charging of the lead-acid battery with similar deep discharge state, and improves the repairing efficiency of the lead-acid battery; however, the existing repair technology lacks equipment for judging the state of deep discharge of the lead-acid battery, cannot accurately and conveniently judge the state of deep discharge of the lead-acid battery to classify the lead-acid battery, so that the repair efficiency is low, and especially the effect of group series charging repair is poor.
Disclosure of Invention
The utility model provides equipment for recording the deep discharge state of a lead-acid battery, which aims to solve the problems of low repair efficiency and poor effect caused by the fact that the failure state of the lead-acid battery cannot be accurately and conveniently judged.
Before the technical scheme of the utility model is specifically described, the following is a simple description of the technical idea:
1. description of the technical idea of the utility model
During deep discharge, lead acid batteries in a failure state tend to accumulate some energy in a certain voltage interval below the rated operating voltage lower limit, and this particular voltage interval of accumulated energy is referred to herein as the "secondary energy plateau". The deep discharge has the meaning of releasing the energy accumulated by the secondary energy platform of the failed lead-acid battery in the range lower than the rated working voltage so as to improve the repairing effect.
The applicant found in production practice that the energy accumulated by the lead-acid battery in different failure states at the secondary energy platform is different, so that the different failure states of the lead-acid battery can be determined according to the energy accumulated by the lead-acid battery at the secondary energy platform, and the different failure states can be understood as that the discharge time, the discharge capacity or the average voltage interval of the deep discharge performance are different under the same deep discharge condition.
Accordingly, the utility model provides equipment for recording the deep discharge state of the lead-acid battery, and the accumulated energy of the lead-acid battery on the secondary energy platform is evaluated by recording the state that the lead-acid battery is continuously discharged from the lower limit of the rated working voltage to the set termination voltage, so that the failure state of the lead-acid battery is judged.
2. The technical proposal of the utility model
The utility model provides a device for recording the deep discharge state of a lead-acid battery, which comprises:
the two ends of the load module are connected with the lead-acid battery and used for reducing the voltage of the lead-acid battery;
the control module comprises a signal input end and a signal output end, wherein the signal input end is used for measuring the real-time voltage value of the lead-acid battery; the signal output end is connected with the timing module and controls the starting and stopping of the timing module according to the real-time voltage value; the timing module is used for recording the discharge time length from the lower limit of the rated working voltage to the set termination voltage interval of the lead-acid battery according to the start-stop signal of the control module; and the data acquisition module is used for acquiring the discharge time measured by the timing module. The control module controls the starting and stopping processes of the timing module according to the real-time voltage value of the lead-acid battery, and the starting and stopping processes are as follows: when the 'real-time voltage value of the lead-acid battery' is reduced to the lower limit of the rated working voltage of the lead-acid battery, the timing module starts timing; when the 'real-time voltage value of the lead-acid battery' is reduced to the end voltage of the lead-acid battery, the timing module stops timing, and the end voltage takes a value in a voltage range smaller than or equal to 1.0V/unit cell.
More preferably, the data acquisition module is further used for acquiring the real-time voltage value measured by the control module; and/or the data acquisition module is also used for outputting an average voltage value and a capacity value.
More preferably, the load module is a constant current discharge module or a resistor; the resistance value of the load module takes a value in a resistance range which is less than or equal to the quotient of the nominal operating voltage and the rated discharge current of the lead-acid battery.
More preferably, the load module is a constant current discharge module or a resistor. The resistance value of the load module takes a value in a resistance range which is less than or equal to the quotient of the nominal operating voltage and the rated discharge current of the lead-acid battery. Specifically, the resistance value of the load module is within the quotient of the nominal operating voltage and the rated discharge current of the lead-acid battery, so that the time required by deep discharge of the lead-acid battery can be shortened.
More preferably, the device further comprises a charging module; the current output end of the charging module is connected with the lead-acid battery, and the control end of the charging module is connected with the control module.
More preferably, an electric control switch is connected in series in the loop of the load module and the lead-acid battery; the electric control switch is connected with the signal output end of the control module, and the control module controls the on-off of the electric control switch according to the real-time voltage value of the lead-acid battery.
More preferably, the electric control switch is further used for switching the connection loops of the charging module and the load module and the lead-acid battery according to a program preset by the control module.
More preferably, a manual switch is connected in series in the loop of the load module and the lead-acid battery and is used for manually controlling the on-off of the loop of the equipment.
More preferably, the device further comprises a heat dissipation module, wherein the heat dissipation module comprises a heat dissipation sheet and/or a fan, the heat dissipation sheet is attached to the load module, and an air channel for preventing heat diffusion is arranged between the fan and the load module.
More preferably, the load module and the control module are integrally provided with a port to which the lead acid battery is coupled.
More preferably, the apparatus further comprises a power module for powering active devices in the apparatus.
3. Technical effects of the utility model
According to the utility model, the standard characteristic data for evaluating the failure state of the lead-acid battery is provided by measuring the discharge time required by the lead-acid battery to discharge from the lower limit of the rated working voltage to the final voltage, the failure state of the lead-acid battery to be repaired is classified according to different discharge time data, and the lead-acid batteries to be repaired with the same or similar discharge time data are subjected to grouping serial charging, so that the repair efficiency and repair effect can be improved.
The capacity repair of the lead-acid battery is realized no matter how the additive materials and the charging technology are upgraded and optimized, the energy state accumulated by the secondary platform is only beneficial to knowing before repair, and particularly, the energy accumulation state of the secondary platform is closely related to the repair effect of the lead-acid battery, the discharge data is mastered properly, and the method can be regarded as a practical means for knowing the failure state of the lead-acid battery through deep discharge, thereby being beneficial to the industrial application of the lead-acid battery repair.
Drawings
FIG. 1 is a schematic diagram of the basic functional blocks and discharge logic relationship of the present utility model;
FIG. 2 is a schematic illustration of a configuration of a load module and a port integration arrangement where a control module is coupled to a lead acid battery;
FIG. 3 is a schematic diagram of a configuration in which a control module is configured to couple two ends of a load module to obtain a voltage signal from a lead acid battery;
FIG. 4 is a schematic diagram of a charging module according to the present utility model;
FIG. 5 is a schematic diagram of an electronically controlled switch arrangement in accordance with the present utility model;
FIG. 6 is a schematic view of a configuration of the present utility model for providing a manual switch;
FIG. 7 is a graph of a voltage variation experiment for a failed lead acid battery discharging at constant current depth;
fig. 8 is another experimental plot of voltage variation for a failed lead acid battery discharging at a constant current depth.
Detailed Description
Essence of the utility modelCharacterised by the fact that by deep discharging the lead-acid battery, the discharge is recorded from the nominal operating voltage lower limit (hereinafter referred to as "V 0 ") to a termination voltage (hereinafter referred to as" V 1 ") and/or the capacity value, the average voltage value, and is displayed at the data acquisition module, thereby providing a standardized status data to the user. The lead-acid battery is from V 0 To V 1 The deep discharge time value of (2) is related to the discharge current intensity and also related to the failure state, reflects a low-voltage residual capacity state of the lead-acid battery, and has the reference meaning of lead-acid battery capacity restoration, wherein the interpretation of the residual capacity performance of different experts is possibly different, but the objectivity and the authenticity of the collected deep discharge data are not affected, and the structure of the lead-acid battery comprises a single lead-acid battery module and a plurality of lead-acid battery modules which are connected in series.
The technical purpose of the utility model is to record the discharge of lead-acid battery from rated working voltage lower limit V 0 To a set termination voltage value V 1 The state of the failed lead-acid battery is known through the characteristic data, the lead-acid battery to be repaired is classified according to the characteristic data, and the repair efficiency is improved.
1. Description will be given of each module and connection relation thereof according to the present utility model with reference to the accompanying drawings
Fig. 1 is a schematic diagram of a basic functional module and discharge logic of the present utility model, including a load module, a control module, a timing module, and a data acquisition module. The load module can be a rated resistor meeting the discharge power requirement, or can be a discharge module with the resistor capable of following voltage variation and constant current, and the two ends of the load module are respectively and electrically connected with the two ends of the lead-acid battery to be measured; the signal input end of the control module is connected with two ends of the lead-acid battery to be measured, and the signal output end of the control module is connected with the timing module; the timing module can record the discharge time length of the lead-acid battery in a set voltage interval according to the start-stop signal of the control module, and the signal output end of the timing module is connected with the data acquisition module; the data acquisition module is used for acquiring the time length of deep discharge of the lead-acid battery measured by the timing module and/or acquiring the real-time current and real-time voltage recorded by the control module, and further calculating the display capacity value (Ah) and the average voltage value.
The deep discharge is different from the conventional working voltage interval, and it is clear to those skilled in the art that the rated working voltage of the lead-acid battery is limited to 1.8V (standby lead-acid battery) or 1.75V (power lead-acid battery), and the basic process of the control module for controlling the starting and stopping of the timing module according to the real-time voltage value of the lead-acid battery is as follows: when the 'real-time voltage value of the lead-acid battery' is reduced to the lower limit of the rated working voltage of the lead-acid battery, the timing module starts timing; when the 'real-time voltage value of the lead-acid battery' is reduced to the end voltage of the lead-acid battery, the timing module stops timing, and the end voltage takes a value in a voltage range smaller than or equal to 1.0V/unit cell.
The circuit connection between the load module and the control module and the lead-acid battery is usually provided with ports or terminals, and because the load module and the control module are connected with two ends of the lead-acid battery, the ports for connecting the load module and the control module with the lead-acid battery are usually integrally arranged in the practical design, and fig. 2 is a schematic structural diagram.
The control module is connected with two ends of the lead-acid battery to obtain a voltage signal of deep discharge of the lead-acid battery, when the line loss voltage of the connection between the load module and the two ends of the lead-acid battery is negligible, or a calibration subprogram is correspondingly arranged in a control program stored in the control module, the control module can also be connected with two ends of the load module to obtain the voltage signal of deep discharge of the lead-acid battery, and one structure is schematically shown in figure 3. Specifically:
the load module can be a constant current discharge module or a resistor, preferably, a constant value resistor is adopted to reduce the manufacturing cost of the equipment, and the constant value resistor can be realized by using any current load such as a wire-wound resistor, a ceramic resistor, an electric furnace wire, a low-voltage bulb and the like which meet the requirements of impedance value and overload power; the resistance value of the load module takes the nominal operating voltage of the lead-acid battery divided by the rated discharge current as a design reference value, for example, the nominal operating voltage of a 6DZM-20 product is 12V, the nominal capacity is 20Ah, the rated discharge time rate is 2h, the 2h rate discharge current is 10A which is the nominal capacity (C/A) of 1/2, and the load module is preferably R=12V/10A=1.2 (ohm); also for example, GFM-500 products rated for 10h discharge at a nominal operating voltage of 2V, nominal capacity 500ah,10h discharge current of 1/10 nominal capacity (C/a), i.e., 50A, may preferably have a load module r=2v/50 a=0.04 (ohms), and so on. The recommended design reference value is designed considering that the full-state lead-acid battery is considered to be discharged, if the deep discharging process is to select conventional equipment to discharge the lead-acid battery to be close to the lower limit of rated working voltage, the discharging current intensity should be properly increased, namely, a load with smaller impedance is selected, for example, the GFM series products with standard 10h discharging rate are selected to design the discharging rate for 5h, 3h and even 1h, and the aim is to shorten the discharging time.
The basic function of the control module is to measure the real-time voltage value of the lead-acid battery and control the start and stop of the timing module according to the real-time voltage value, including controlling the on-off of the electric control switch and the start of the charging module. The control module is used for controlling the on/off of the electric control switch and has the function of voltage monitoring, so that the record of the voltage of the lead-acid battery from V can be realized 0 To V 1 Is used for the discharge process. The integrated product of the control module is mature, more types of 0/1 logic electric control switches can be realized in the market, and the logic control function can be realized by programming according to the instruction book.
The basic function of the timing module is to record the discharge time of the lead-acid battery in a set voltage interval according to the start-stop signal of the control module; the basic functions of the timing module and the control module can be expanded according to actual design requirements, for example, the discharge time length is added into real-time current data acquired by the control module, and the discharge time length can be converted into deep discharge capacity data (Ah value) of the lead-acid battery through a product relation; for example, the real-time voltage data collected by the control module is added, and the average deep discharge voltage of the lead-acid battery can be further recorded.
The basic function of the data acquisition module is to acquire and/or display the deep discharge time length of the lead-acid battery; similarly, the basic functions of the data acquisition module can be expanded according to actual design requirements, and the deep discharge capacity value and the average voltage value of the lead-acid battery can also be processed uniformly by the data of the real-time current and the real-time voltage acquired by the control module after the signals pass through the channel of the timing module.
The charging module of the utility model is preferable and needs to be designed according to the capacity and discharge time rate of the specific lead-acid battery to be repaired; the repairing and charging technology of the lead-acid battery is mature, and a small-current overcharging method with unlimited voltage is generally adopted to charge more than 50% of the capacity value of the lead-acid battery to be repaired; the current output end of the charging module is connected with the lead-acid battery, the control end of the charging module is connected with the control module, and one design example of the charging module is shown in fig. 4.
As an improvement of the technical scheme, an electric control switch is electrically connected in series between the power end of the external lead-acid battery and the load module, the electric control switch is connected with the signal output end of the control module, and the control module controls the power on and power off of the electric control switch according to the real-time voltage value of the lead-acid battery; the electrically controlled switch is required to meet the design requirement of the maximum discharge current of the lead-acid battery, and one design example is shown in fig. 5.
As a further improvement of the above technical solution, a manual switch is electrically connected in series between the power end of the external lead-acid battery and the load module or the electric control switch, the manual switch is usually fixed at the seat frame, and one design example is shown in fig. 6, and the manual switch is electrically connected with the power end of the load module and the external lead-acid battery in series; the manual switch is arranged, so that misoperation can be reduced, and the operation procedure of the manual switch is started after the connection check of the external circuit is carried out.
As an improvement of the above technical solution, the data terminal is independently arranged or is jointly arranged with the external power terminal to form an external integrated special interface. The data end is a special interface externally connected with a data wire, and the special data wire is connected with the two pole terminals of the lead-acid battery to collect voltage data, so that the control precision can be effectively improved; the external power end and the data end are arranged as special interfaces, which is favorable for using integrally designed power lines and data lines.
The discharging device further comprises an AC-DC adaptive power supply which is electrically connected with an external power grid for the control module, the electric control switch, the data display table and the electric fan, or a battery is additionally arranged.
In the above technical solution, the discharging device includes a heat dissipation module or a heat dissipation device; the heat dissipation device comprises an electric fan or/and a heat dissipation fin; the material of the radiating fin adopts conventional aluminum alloy or other alloys, the shape of the radiating fin is arbitrary, and the radiating fin is connected with the load in a thermosetting way; the electric fan is fixed on the upper part or any side of the seat frame, and the external power end of the electric fan is electrically and fixedly connected with two ends of the load or other power sources.
In the technical scheme of the heat radiating device, the heat radiating device comprises heat radiating fins which are in thermosetting connection with a seat frame made of alloy materials through heat conducting pipes, wherein the seat frame made of alloy materials is taken as a heat radiating function expansion part of the heat radiating fins, and the heat conducting pipes are high-efficiency heat conducting devices which are well known to those skilled in the art, and the heat conducting effect of the heat conducting devices is better than that of any known metal; the air conditioner also comprises a special air duct for isolating heat diffusion of the load between the load module and the electric fan, and the cross section shape of the air duct is arbitrary. The special air duct can improve the heat dissipation effect of the heat dissipation device; the load modules can also be arranged on different seat frames separately, so that the heat accumulation influence on other components caused by discharging of the load modules is avoided.
The electric fan is the most common heat dissipation device, and is fixed on the upper part or any side of the seat frame when in design, and the external power supply end of the electric fan is electrically and fixedly connected with two ends of the load module or other power supplies; the other power sources include an external power source and an AC-DC power source specially configured with external alternating current, or a specially configured battery.
The utility model is used as a practical tool, and when the capacity and the discharge current of the lead-acid battery are large, the heat dissipation device is preferably arranged to ensure that the accumulated heat of the load can be effectively dissipated; the design of the heat dissipating device is well known to those skilled in the art, for example, the material of the heat dissipating fin is usually made of conventional aluminum alloy or other alloy, and is thermally connected with the load, so that the appearance shape can be arbitrary, and the larger the specific surface area is, the more favorable the heat dissipating effect is.
Fig. 1 is a basic set of the apparatusAs an example, one example of a manner of operation is: when the lead-acid battery is discharged, two ends of the load module are electrically connected with two poles of the lead-acid battery through a power line to form a discharging loop, and the control module is directly connected with the lead-acid battery through a data line to obtain real-time voltage data; when the lead-acid battery is discharged to the lower limit value V of rated working voltage 0 The control module starts a timing module, and the timing module starts to record discharge time; when the discharge real-time voltage of the lead-acid battery drops to a set termination voltage value V 1 The control module controls the timing module to stop recording the discharge time, and the data acquisition module records the slave V recorded by the timing module 0 To V 1 Is displayed for the discharge time value; the relative time value of the deep discharge can be used as a reference basis for judging the failure state of the lead-acid battery.
An example of a more preferred equipment design is shown in fig. 5, and is characterized in that an electric control switch is added, a load module is connected with the electric control switch and is electrically connected with a lead-acid battery through a power line to form a two-pole discharging loop, and the working mode is as follows: when the electric control switch controlled by the control module is a passage, the lead-acid battery discharges through the discharge loop, and the load module provides real-time voltage data of the lead-acid battery for the control module; when the lead-acid battery is discharged to the lower limit value V of rated working voltage 0 The control module starts the timing module to record the discharge time; when the discharge real-time voltage of the lead-acid battery drops to a set termination voltage value V 1 The control module controls the electric control switch to break, the control module controls the timing module to stop recording the discharge time, and the data acquisition module records the slave V recorded by the timing module 0 To V 1 Is displayed for the discharge time value; the working control program illustrated in fig. 5 may also be designed such that the control module further collects the real-time voltage value of the discharge of the lead-acid battery, and synchronously displays the average voltage value of the discharge on the data collection module, but grasps that the discharge falls to the lower limit value V of the rated working voltage 0 Start recording discharge time and lead-acid battery discharge drop to V 1 The design point of recording the discharge time is terminated.
2. Description of the utility model
The lower limit value V of the rated operating voltage of the lead-acid battery 0 Is of the fieldFor example, a 6MDZ series lead acid battery dedicated to an electric bicycle is 10.50V (1.75V/cell) and a GFM series lead acid battery as a backup is 1.80V/cell.
When the load module is selected as rated impedance, the discharging current is a natural falling process in direct proportion to the voltage, and the lower the voltage is, the smaller the current is, the longer the voltage and the current tend to be 0 is, so the discharging end voltage value V is designed in particular 1 The termination voltage value defined by the time is chosen by the designer as long as it is not higher than 1.0V/cell. Said V 1 Typically 1.0V/cell or less is selected by the designer under defined conditions.
When the failure states of the lead-acid batteries are different, the energy performance released by deep discharge is also greatly different, and fig. 7 and 8 are voltage variation experimental graphs of two identical-specification 6MDZ failure lead-acid batteries in deep discharge with constant current, which obviously show that the failure lead-acid batteries in fig. 7 are piled up with larger energy in the region of about 9V and the failure lead-acid batteries in fig. 8 are piled up with larger energy in the region of about 7V; the deep discharging meaning of the failed lead-acid battery is that the energy of the low-voltage platform is released in a deep discharging mode, and the applicant finds that the lead-acid battery with similar energy is accumulated on the secondary energy platform in production practice, and the charge quantity required for repairing is approximately the same, so that one of the technical meanings of the utility model is to classify the failed lead-acid battery through objective data of the performance of the failed lead-acid battery on the secondary energy platform, and to charge similar lead-acid batteries in series, thereby improving the repairing efficiency of the lead-acid battery.
3. Treatment of lead acid batteries before and after discharge
For lead-acid batteries with a short failure period, the open-circuit standing voltage is higher than 2.0V/unit cell, and the lead-acid batteries are preferably discharged directly after electrolyte is supplemented, repair liquid is added and a vacuum pumping process is matched; when the failed lead-acid battery is caused by long-term undercharge or is placed for a long time, for example, more than three months, and the open circuit voltage is seriously low, the lead-acid battery is preferably subjected to complementary charging, the 6DZM series lead-acid battery is recommended to be subjected to complementary charging to an open circuit standing voltage of more than 12.0V, and the GFM series lead-acid battery is recommended to be subjected to complementary charging to an open circuit standing voltage of more than 2.00V, so that relatively accurate deep discharge data can be obtained.
The conventional process before deep discharging of the lead-acid battery is to supplement electrolyte to the lead-acid battery, add repair liquid and process with vacuumizing, and the charging process after deep discharging is familiar to those skilled in the art, and although different operators adopt different repair additives respectively, the repair charging process is also different, and the conventional process has the design characteristic of staged charging strength, and the corresponding charging process is designed according to the using effect of the repair additives.
4. Detailed description of the preferred embodiments
The following examples are only recommended, and several alternatives may be partially selected, or combined with other maturation techniques.
Example 1
The discharging equipment special for the 6DZM20 lead-acid battery and capable of recording deep discharging state data is designed, and comprises a load module, an electric control switch, a control module, a timing module and a data acquisition module, wherein two ends of the load module are connected with the lead-acid battery through the electric control switch; the control module is internally stored with a logic control program, the signal input end of the control module is connected with the two ends of the load module, and the two signal output ends of the control module are respectively connected with the input end of the timing module and the control end of the electric control switch; the output end of the timing module is connected with the data acquisition module; the functional blocks and discharge logic structure of this embodiment are schematically shown in fig. 5.
The data acquisition module of the embodiment adopts a data display meter, is provided with a seat frame, and is connected with an external lead-acid battery through an electric control switch, a special external power supply end can be arranged on the connection of the electric control switch and the external lead-acid battery, and the external power supply end is fixed on an operation panel of the seat frame; the data display table is fixed on the operation panel of the seat frame; according to the embodiment, the discharge time of the lead-acid battery recorded by the timing module can be displayed through the data display table according to the start-stop signal set by the control module.
The discharge time rate of the 6DZM series lead-acid battery product is 2h, the use characteristics are that the battery is discharged outdoors, charged and discharged circularly, and most of the battery is charged outdoors, the failure characteristics are that serious water loss or positive electrode active substances soften, and considerable energy is accumulated in a 7-9V deep discharge interval; the load module of the embodiment adopts a special high-temperature-resistant ceramic resistor, and the rated impedance is R=12V/10A=1.2 (ohm); when the embodiment is used, the external power end is electrically and fixedly connected with the two pole terminals of the lead-acid battery through the power line, the control module automatically controls the electric control switch passage, and when the real-time discharge voltage of the lead-acid battery is reduced to 10.50V, the timing module is controlled to start timing; when the real-time discharge voltage of the lead-acid battery drops to 4.00V, the timing module is controlled to stop timing; the data display table displays the timing value recorded by the timing module.
The 6DZM lead-acid battery product is of a 6-grid internal series structure, 6 grid single bodies of the failed lead-acid battery are usually unbalanced in deep discharge, and the termination voltage is set to 4.00V to prevent the occurrence of counter-electrode of individual single bodies in deep discharge; when the lead-acid battery is left for a longer period of time, e.g., more than three months, it may be preferable to charge the lead-acid battery with a conventional charger for more than 15 minutes before discharging, resulting in a lead-acid battery with a resting open circuit voltage value of greater than 12.0V.
When the embodiment is specifically applied, 6DZM20 lead-acid batteries with the same or similar time value of recording discharge from 10.50V to 4.00V are classified, and similar lead-acid batteries are organized into the same serial group for serial charging, so that the repairing and charging efficiency of the lead-acid batteries can be greatly improved; as a deep discharge characteristic data, no matter how the time of deep discharge from 10.50V to 4.00V of the lead-acid battery is read by a person skilled in the art, the classification of serial charging has only benefit for improving the repairing efficiency of the lead-acid battery, and the classification can be used as a practical tool for repairing the lead-acid battery.
Example 2
A manual switch is added on the basis of the embodiment 1 and is fixed on an operation panel of the seat frame, and the electric control switch and an external power supply end are electrically connected in series; the manual switch is arranged to reduce misoperation, and all external circuits are checked to be connected without errors before the manual switch is started.
The heat dissipation device comprising the electric fan and the heat dissipation fin can be additionally arranged in the embodiment and the previous embodiment; the heat radiating fin is made of aluminum alloy, is in a multi-row flaky shape and is connected with the load module in a thermosetting way; the electric fan adopts a nominal 12V direct current fan, is fixed on one side of the seat frame, and the external power end of the electric fan is electrically connected with the two ends of the load module.
Example 3
Taking the basic module and the logic structure of the embodiment 2 as references, a discharging device special for the GFM500 standby lead-acid battery is designed; standard discharge time rate of GFM500 lead-acid battery is 10h, rated working current is 1/10 nominal capacity value, namely 50A; the nominal operating voltage for a backup lead acid battery is typically 48V, i.e., 24 single lead acid batteries are used in series, and the standard discharge time is no less than 8 hours to 43.2V (1.8V x 24).
The design of this embodiment compared to embodiment 2 differs in two points: 1) The rated impedance of the load module is designed to be 0.02 ohm; 2) Voltage value V for terminating discharge 1 Set to 0.80V. When the specific operation of the embodiment is applied, the conventional discharging equipment is preferably utilized to discharge the whole group of lead-acid batteries to the voltage of 46.0V, then the connection between the single batteries of the series lead-acid battery is disconnected, each single lead-acid battery is discharged by the discharging equipment of the embodiment, and the time value of deep discharging from 1.80V to 0.80V of each single lead-acid battery is obtained.
In the embodiment, as the discharge current is larger, the heating value of the load module is considerable, and the further design is preferable to separately arrange the load with a special seat frame made of alloy materials, so that other components cannot be influenced by the heating of the load; removing or replacing the monomer with the discharge time value seriously inconsistent with the average value of the whole group in the subsequent process, reconnecting the serial lead-acid battery pack, and charging the serial lead-acid battery pack by using conventional special charging equipment (generally setting to be 2.23V/unit cell and 53.52V for 24 serial lead-acid battery packs); when the whole group of lead-acid batteries enter a floating charge state, the repairing effect can be better by using a specially designed repairing charger to recharge the whole group of lead-acid batteries.
Example 4
A charging module is additionally arranged on the basis of the embodiment 2, the current output end of the charging module is connected with a lead-acid battery through an electric control switch, and the control end of the charging module is connected with a control module; the logic control program stored in the control module is set as follows: when the control timing module stops timing for 11 minutes, the control module controls the electric control switch to the electric channel of the charging module electrically connected with the external lead-acid battery, and correspondingly closes the electric channel of the load module electrically connected with the external lead-acid battery.
The repair charging procedure of the charging module of this embodiment is set as follows; 4A current charging was terminated by 4.5 hours, then by switching 2A current charging for 8 hours, then by switching 1A current charging for 12 hours. In the embodiment, the charging module is additionally arranged, so that deep discharging and repair charging of the lead-acid battery can be completed through one-time operation.
Example 5
On the basis of example 3, the discharge procedure was set to a pause in which the cell voltage was reduced to 1.80V, and the manual operation was restarted; specifically, it is known in the industry that an additive is added to repair a lead-acid battery, and that a common repair additive has poor permeability to polar plate active substances and needs the assistance of a vacuumizing process, and that a manual restart is set to be matched with adding a special repair additive to the lead-acid battery before the deep discharge program is executed.
With the intensive research on lead-acid battery repair technology in recent years, special repair additives appear in the industry, and the technical use requirement is that the lead-acid battery is discharged to the rated working voltage lower limit V 0 The empty charge state of the lead-acid battery is added, the special repairing additive can be permeated into the deep layer of the polar plate active material by means of gravity and deep discharge without the assistance of a vacuumizing process, so that the lead-acid battery is supported to be continuously repaired and charged after deep discharge, and the industrial repairing efficiency is improved; when the special repairing additive is adopted, the discharge depth can be further optimized, and the discharge termination voltage is set to 0.50V, so that the additive has better penetration effect in the deep layer of the polar plate active material.
The preferred embodiments of the present utility model have been described in detail above, but the present utility model is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present utility model within the scope of the technical concept of the present utility model, and all the simple modifications belong to the protection scope of the present utility model.
In addition, the specific features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further.
Moreover, any combination of the various embodiments of the utility model can be made without departing from the spirit of the utility model, which should also be considered as disclosed herein.
Claims (10)
1. An apparatus for recording a deep discharge condition of a lead acid battery, comprising:
the two ends of the load module are connected with the lead-acid battery and used for reducing the voltage of the lead-acid battery;
the control module comprises a signal input end and a signal output end, wherein the signal input end is used for measuring the real-time voltage value of the lead-acid battery; the signal output end is connected with the timing module, and the starting and stopping of the timing module are controlled according to the real-time voltage value;
the timing module is used for recording the discharge time length from the lower limit of the rated working voltage to the set termination voltage interval of the lead-acid battery according to the start-stop signal of the control module;
and the data acquisition module is used for acquiring the discharge time measured by the timing module.
2. The apparatus of claim 1, wherein the device comprises a plurality of sensors,
the data acquisition module is also used for acquiring the real-time voltage value measured by the control module; and/or
The data acquisition module is also used for outputting an average voltage value and a capacity value.
3. The apparatus of claim 1, wherein the device comprises a plurality of sensors,
the load module is a constant current discharge module or a resistor;
the resistance value of the load module takes a value in a resistance range which is less than or equal to the quotient of the nominal operating voltage and the rated discharge current of the lead-acid battery.
4. The apparatus of claim 1, further comprising a charging module, wherein a current output of the charging module is coupled to the lead acid battery and a control terminal of the charging module is coupled to the control module.
5. The apparatus of claim 1, wherein the device comprises a plurality of sensors,
an electric control switch is connected in series in the loop of the load module and the lead-acid battery;
the control module is used for controlling the on-off of the electric control switch according to the real-time voltage value of the lead-acid battery.
6. The apparatus of claim 5, wherein the electronically controlled switch is further configured to switch a coupling loop of the charging module and the load module to the lead acid battery.
7. The device of claim 1, wherein a manual switch is connected in series with the circuit of the lead-acid battery and used for manually controlling the on-off of the circuit of the device.
8. The device of claim 1, further comprising a heat sink module comprising a heat sink and/or a fan, wherein the heat sink is attached to the load module, and an air duct for preventing heat diffusion is provided between the fan and the load module.
9. The apparatus of claim 1, wherein the load module and control module are integrally provided with a port to which a lead acid battery is coupled.
10. The device of claim 1, further comprising a power module for powering active components in the device.
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