CN111551857A - Pulse discharge type lead-acid battery detection device - Google Patents
Pulse discharge type lead-acid battery detection device Download PDFInfo
- Publication number
- CN111551857A CN111551857A CN202010419263.1A CN202010419263A CN111551857A CN 111551857 A CN111551857 A CN 111551857A CN 202010419263 A CN202010419263 A CN 202010419263A CN 111551857 A CN111551857 A CN 111551857A
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- lead
- switch
- bleeder
- acid battery
- super capacitor
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- 239000002253 acid Substances 0.000 title claims abstract description 44
- 238000001514 detection method Methods 0.000 title claims abstract description 22
- 239000003990 capacitor Substances 0.000 claims abstract description 34
- 238000005259 measurement Methods 0.000 claims abstract description 28
- 238000005070 sampling Methods 0.000 claims abstract description 22
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000012360 testing method Methods 0.000 claims description 4
- 229910044991 metal oxide Inorganic materials 0.000 claims description 3
- 150000004706 metal oxides Chemical class 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000005284 excitation Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 208000032953 Device battery issue Diseases 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 238000010278 pulse charging Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/378—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] specially adapted for the type of battery or accumulator
- G01R31/379—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] specially adapted for the type of battery or accumulator for lead-acid batteries
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
- G01R31/387—Determining ampere-hour charge capacity or SoC
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
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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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
-
- 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
Abstract
The invention relates to the technical field of lead-acid batteries, and particularly discloses a pulse discharge type lead-acid battery detection device which comprises a switch array, a sampling resistor, a super capacitor module, a bleeder switch, a bleeder resistor, a measurement and control module and a power lead wire, wherein the switch array is connected with a lead-acid battery through a positive electrode wire of the power lead wire, the sampling resistor is connected with the lead-acid battery through a negative electrode wire of the power lead wire, a positive electrode of the super capacitor module is connected with the switch array and the bleeder switch, a negative electrode of the super capacitor module is connected with the sampling resistor and the bleeder resistor, the bleeder switch is connected with the bleeder resistor, and the switch array, the sampling resistor, the super capacitor module and the bleeder switch are all connected with the measurement and control module. The invention has the advantages of exquisite structure and low cost, can be applied to a backup power system of a medium-large lead-acid battery, and can accurately obtain the health state and the available capacity of the battery.
Description
Technical Field
The invention relates to the technical field of lead-acid batteries, in particular to a pulse discharge type lead-acid battery detection device.
Background
Lead-acid batteries are commonly used in energy storage devices for medium and large backup power systems. During storage and use, the battery has the faults of liquid leakage, gas evolution, bulging, local short circuit, open circuit, thermal runaway and the like, so that the internal resistance of the battery is increased, the capacity is reduced, the service life is shortened, the battery is invalid and cannot supply electric energy, and even fire and explosion are caused. The total amount of lead-acid batteries scrapped in China each year is 300 ten thousand tons, and most of the lead-acid batteries are the service lives of the lead-acid batteries which are prematurely ended due to battery failure.
The lead-acid battery state detection method mainly comprises three steps: terminal voltage measurement, check discharge and internal resistance detection. The terminal voltage measurement is to detect or monitor the voltage of each battery through a voltage measuring instrument, and to represent the consistency of the batteries through voltage difference, but the available capacity of the batteries cannot be calculated. The check discharge is to perform full discharge on the battery at a low rate (0.1C), so that the equipment is huge, the consumed time is long, an off-line detection mode is adopted, the time and the labor are wasted, and special items are generally arranged for equipment maintenance. The method for detecting the internal resistance comprises two methods, one is that an alternating current excitation signal is injected into a battery, the response of the alternating current excitation signal is measured, and then alternating current impedance is calculated; and secondly, obtaining pulsating voltage and current through pulse charging and discharging, and dividing the current difference by the voltage difference to obtain the internal resistance of the battery. The former is a response output of a small-signal excitation source and cannot reflect a case when a large load is driven by a battery. The latter is that the measurement result is smaller than the true value under the condition that the parallel parasitic capacitance exists in the battery. Similar to the voltage detection, the internal resistance detection result cannot estimate the capacity of the battery.
Therefore, for a lead-acid battery used for a backup power supply, a light device capable of quickly testing and accurately obtaining available capacity is urgently needed to be researched so as to effectively solve the problems of long current measurement time, large error of a test result and large volume of detection equipment.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a pulse discharge type lead-acid battery detection device, which has an elaborate structure and a low cost, can be applied to a medium-large lead-acid battery backup power system, and accurately obtain the health state and the available capacity of the battery, aiming at the above defects of the prior art.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the utility model provides a pulse discharge formula lead acid battery detection device, includes switch array, sampling resistor, super capacitor module, bleeder switch, bleeder resistor, observes and controls module and power lead wire, the switch array passes through the positive line and the lead acid battery of power lead wire is connected, sampling resistor passes through the negative pole line and the lead acid battery of power lead wire is connected, super capacitor module anodal with switch array, bleeder switch connect, super capacitor module's negative pole with sampling resistor, bleeder resistor connect, bleeder switch with bleeder resistor connects, switch array, sampling resistor, super capacitor module and bleeder switch all with observe and control the module connection.
Preferably, the measurement and control module comprises a measurement unit, a measurement line, a control unit and a control line, the measurement unit is respectively connected with the super capacitor module and the sampling resistor through the measurement line, and the control unit is respectively connected with the switch array and the bleeder switch through the control line.
Preferably, the measuring unit consists of several voltage comparators.
Preferably, the measurement line and the control line are both twisted-pair lines with shielding layers.
Preferably, the switch array is formed by connecting a plurality of identical switch branches in parallel, and each switch branch is formed by connecting a current-limiting resistor and an MOS transistor in series.
Preferably, the withstand voltage value of the super capacitor module is greater than the highest voltage of the lead-acid battery, and the capacity of the super capacitor module is not less than the capacity of the lead-acid battery which continuously discharges for 10s at the maximum discharge current.
By adopting the technical scheme, the pulse discharge type lead-acid battery detection device provided by the invention has the following beneficial effects: (1) the structure is simple, and an external power supply and a high-power load are not needed; (2) the detection is rapid, and the detection time of each battery is 10-30 s; (3) the lead-acid battery pack is used on line, and the connection of the original lead-acid battery pack can be disconnected; (4) the cost is low, and a voltage or current sensor is not needed; (5) the measurement is accurate, and the discharge current is matched with the discharge current at the maximum load.
Drawings
FIG. 1 is a schematic circuit diagram of a first embodiment of the present invention;
FIG. 2 is a schematic circuit diagram according to a second embodiment of the present invention;
FIG. 3 is a flow chart of the detection of the present invention;
in the figure, 1-switch array, 2-sampling resistor, 3-super capacitor module, 4-bleeder switch, 5-bleeder resistor, 6-measurement and control module, 71-positive pole line of power lead, 72-negative pole line of power lead, 62-measurement line and 64-control line.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
As shown in fig. 1-2, the pulse discharge type lead-acid battery detection device includes a switch array 1, a sampling resistor 2, a super capacitor module 3, a bleed switch 4, a bleed resistor 5, a measurement and control module 6, and a power lead. The switch array 1 is connected with the lead-acid battery through a positive electrode line 71 of a power lead, the sampling resistor 2 is connected with the lead-acid battery through a negative electrode line 72 of the power lead, the positive electrode of the super capacitor module 3 is connected with the switch array 1 and the bleeder switch 4, the negative electrode of the super capacitor module 3 is connected with the sampling resistor 2 and the bleeder resistor 5, and the bleeder switch 4 is connected with the bleeder resistor 5. It can be understood that the measurement and control module 6 includes a measurement unit, a measurement line 62, a control unit, and a control line 64, and the measurement unit is connected to the super capacitor module 3 and the sampling resistor 2 through the measurement line 62, respectively, to measure the capacitor voltage and the sampling resistor 2 voltage. The control unit is respectively connected with the switch array 1 and the bleeder switch 4 through a control line 64, and controls the on-off of the switch array 1 and the bleeder switch 4. The measuring unit consists of a voltage comparator, compares the measuring voltage with a preset voltage, and outputs a high level or a low level. The measurement line 62 and the control line 64 of the measurement and control module 6 are both twisted-pair lines with shielding layers. The switch array 1 is formed by connecting a plurality of identical switch branches in parallel, and each switch branch is formed by connecting a current-limiting resistor and a MOS tube in series. The direction of the MOS tube is such that current can only flow from the battery to the super capacitor. The super capacitor module 3 may be a capacitor or a plurality of capacitors connected in series. The withstand voltage value of the super capacitor module 3 is larger than the highest voltage of the lead-acid battery. The capacity of the super capacitor module 3 is not less than the capacity of the battery which is continuously discharged for 10s at the maximum discharge current. It should be understood that fig. 1 is a schematic diagram of a pulse discharge type detection device for a single lead-acid battery, and fig. 2 is a schematic diagram of a pulse discharge type detection device for a plurality of lead-acid batteries.
Specifically, fig. 3 is a detection flow chart of the present invention, and as can be seen from fig. 1, fig. 2 and fig. 3, the operation steps of the pulse discharge type lead-acid battery detection apparatus are as follows:
(1) the power lead of the device is connected with the anode and the cathode of the battery;
(2) all MOS tubes in the switch array 1 are disconnected, and the bleeder switch 4 is closed;
(3) the bleeder switch 4 is switched off, the MOS tube of the first switch branch in the switch array 1 is switched on, the lead-acid battery discharges, and the super capacitor charges;
(4) the voltage of the sampling resistor 2 is reduced to a set threshold value, and an MOS (metal oxide semiconductor) tube of a second switch branch in the switch array 1 is closed;
(5) repeating the operation of the step (4) until the MOS tubes of all the switch branches are closed;
(6) the voltage of the sampling resistor 2 is reduced to a set threshold value, and MOS (metal oxide semiconductor) tubes of all switch branches are disconnected;
(7) estimating the health state and the available capacity of the battery according to the conduction time of each MOS tube and an existing empirical formula;
(8) in the operations from the step (3) to the step (6), if the capacitor voltage exceeds the rated voltage, the MOS transistors of all the switch branches are disconnected, and the super capacitor module 3 is protected.
The invention has reasonable design and unique structure, (1) the super capacitor is used to realize the high-rate discharge of the lead-acid battery, and the huge volume of the equipment caused by the discharge of the resistor is avoided; (2) the control of the discharge power is realized by sequentially conducting the switch arrays 1, so that the chopper is prevented from being introduced, and the complexity of equipment is increased; (3) the voltage comparator is used for comparing and judging the voltage, so that the requirement of high electromagnetic compatibility on the digital-to-analog conversion chip under large current is avoided; (4) the on-time of the switch is used as the criterion of the battery health state and available capacity to replace the existing voltage and internal resistance judgment.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.
Claims (6)
1. The utility model provides a pulse discharge formula lead acid battery detection device which characterized in that: including switch array, sampling resistor, super capacitor module, bleeder switch, bleeder resistor, observing and controlling module and power lead wire, the switch array passes through the positive line and the lead-acid batteries of power lead wire and is connected, sampling resistor passes through the negative pole line and the lead-acid batteries of power lead wire and is connected, super capacitor module's positive pole with switch array, bleeder switch are connected, super capacitor module's negative pole with sampling resistor, bleeder resistor connect, bleeder switch with bleeder resistor connects, switch array, sampling resistor, super capacitor module and bleeder switch all with observe and control the module connection.
2. The device for detecting a pulse discharge type lead-acid battery according to claim 1, wherein: the measurement and control module comprises a measurement unit, a measurement line, a control unit and a control line, wherein the measurement unit is respectively connected with the super-capacitor module and the sampling resistor through the measurement line, and the control unit is respectively connected with the switch array and the bleeder switch through the control line.
3. The device for testing a pulse discharge type lead-acid battery according to claim 2, wherein: the measuring unit consists of a plurality of voltage comparators.
4. The device for testing a pulse discharge type lead-acid battery according to claim 2, wherein: the measuring line and the control line are twisted-pair lines with shielding layers.
5. The device for detecting a pulse discharge type lead-acid battery according to claim 1, wherein: the switch array is formed by connecting a plurality of same switch branches in parallel, and each switch branch is formed by connecting a current-limiting resistor and an MOS (metal oxide semiconductor) tube in series.
6. The device for detecting a pulse discharge type lead-acid battery according to claim 1, wherein: the withstand voltage value of the super capacitor module is larger than the highest voltage of the lead-acid battery, and the capacity of the super capacitor module is not smaller than the electric quantity of the lead-acid battery which continuously discharges for 10s at the maximum discharge current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010419263.1A CN111551857A (en) | 2020-05-18 | 2020-05-18 | Pulse discharge type lead-acid battery detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010419263.1A CN111551857A (en) | 2020-05-18 | 2020-05-18 | Pulse discharge type lead-acid battery detection device |
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| CN111551857A true CN111551857A (en) | 2020-08-18 |
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| CN202010419263.1A Pending CN111551857A (en) | 2020-05-18 | 2020-05-18 | Pulse discharge type lead-acid battery detection device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0301342D0 (en) * | 2003-01-21 | 2003-02-19 | Intelligent Battery Technology | Detection and indicating means for a storage battery |
| CN104242412A (en) * | 2014-10-14 | 2014-12-24 | 广州市德百顺电气科技有限公司 | Charging state detecting device and method of accumulator |
| CN209342889U (en) * | 2018-11-20 | 2019-09-03 | 大城绿川（深圳）科技有限公司 | A kind of maintenance-free lead accumulator digital pulse type nondestructive testing instrument |
| CN212321801U (en) * | 2020-05-18 | 2021-01-08 | 珠海市高新区中城粤能科技有限公司 | Pulse discharge type lead-acid battery detection device |
-
2020
- 2020-05-18 CN CN202010419263.1A patent/CN111551857A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0301342D0 (en) * | 2003-01-21 | 2003-02-19 | Intelligent Battery Technology | Detection and indicating means for a storage battery |
| CN104242412A (en) * | 2014-10-14 | 2014-12-24 | 广州市德百顺电气科技有限公司 | Charging state detecting device and method of accumulator |
| CN209342889U (en) * | 2018-11-20 | 2019-09-03 | 大城绿川（深圳）科技有限公司 | A kind of maintenance-free lead accumulator digital pulse type nondestructive testing instrument |
| CN212321801U (en) * | 2020-05-18 | 2021-01-08 | 珠海市高新区中城粤能科技有限公司 | Pulse discharge type lead-acid battery detection device |
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