CN215340232U - Simple to operate's online short-term test battery internal resistance equipment - Google Patents
Simple to operate's online short-term test battery internal resistance equipment Download PDFInfo
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- CN215340232U CN215340232U CN202121717316.4U CN202121717316U CN215340232U CN 215340232 U CN215340232 U CN 215340232U CN 202121717316 U CN202121717316 U CN 202121717316U CN 215340232 U CN215340232 U CN 215340232U
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Abstract
The utility model discloses an on-line rapid detection device for battery internal resistance, which is convenient to install and comprises: an internal resistance test monitoring system, this internal resistance test monitoring system mainly contains: interface display unit, gather battery monomer voltage module, sample battery current module, control module output unit and control discharge load output module, wherein: the battery monomer voltage collecting module and the battery current sampling module are connected with a battery, the control module output unit is connected with a power supply module of a charger, and the control module discharge load output module is connected with a discharge load, so that the internal resistance testing and monitoring system forms an on-line rapid battery internal resistance detecting device convenient to install. The device can realize the on-line monitoring of the internal resistance of the single battery in a power supply system without increasing the cost, thereby realizing the purpose of simplifying the wiring of the direct current screen.
Description
Technical Field
The utility model relates to the field of batteries, in particular to a device for quickly detecting internal resistance of a battery on line, which is convenient to install.
Background
The power supply system is a core unit of an integrated power supply, a communication power supply, a petrochemical power supply and a railway power supply of the intelligent substation. With the development of the technology, the application of the storage battery in the power supply system is more and more extensive, and the performance and the loading capacity of the storage battery are the key points for the reliable work of the power supply system. The storage battery is usually used in the form of a battery pack, and the characteristics of charging the whole storage battery pack are that, for example, one or more aged batteries with larger internal resistance are arranged in the battery pack, the capacity of the aged batteries is inevitably reduced, and when the battery pack is charged by a charger, the aged batteries are quickly fully charged due to the small capacity. The charger may erroneously assume that the entire battery pack is fully charged and transits to a float-charged state, thereby charging the battery pack with a constant voltage and a small current. The remaining well-conditioned batteries cannot be fully charged. The battery pack is charged and discharged by taking the capacity of an aged battery as a standard, and the capacity is continuously reduced and the backup time of the battery is shortened through vicious cycles of multiple floating charge-discharge-uniform charge-discharge-floating charge. Therefore, the detection of the battery pack in the application is necessary, and the utility model mainly aims at the problems of the current technology:
1 the existing on-line testing technology for testing the internal resistance of the battery can not meet the actual requirement,
2 the current internal resistance test has the problems and disadvantages of complicated wiring,
the research and development are carried out.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, the present invention provides a device for rapidly detecting internal resistance of a battery on line, which is convenient to install and can realize on-line detection of internal resistance of a storage battery of a power supply system. The second purpose is to provide a quick detection circuit with simple wiring.
Therefore, the utility model provides an on-line rapid battery internal resistance detection device convenient to install, which comprises: an internal resistance test monitoring system (1), this internal resistance test monitoring system (1) mainly contains: interface display unit (15), gather battery monomer voltage module (14), sample battery current module (13), control module output unit (12) and control load output module (11) that discharges, wherein: the battery cell voltage acquisition module (14) and the battery current sampling module (13) are connected with a battery, the control module output unit (12) is connected with the power supply module (2) of the charger, and the control discharge load output module (11) is connected with the discharge load (3), so that the internal resistance test monitoring system (1) forms an online rapid battery internal resistance detection device convenient to install.
Further, a better scheme is that the internal resistance testing and monitoring system (1) and the bottom layer module can be connected by adopting a communication interface RS485, the bottom layer module can be but is not limited to a power supply module and a battery inspection module of a charger, and the battery inspection module can be used for independently detecting parameters of each battery.
Preferably, the interface display unit (15) can respectively display the cell voltage, the internal resistance and other required parameters of the battery to be tested.
The device can realize the on-line monitoring of the internal resistance of the single battery without increasing the cost in a power supply system, thereby realizing the purpose of simplifying the wiring of a direct current screen, and also can adopt a discharge method to test the internal resistance so as to better meet the actual requirement and realize the on-line test of the internal resistance of the battery.
Drawings
Fig. 1 is a schematic diagram of a modular structure of an on-line rapid battery internal resistance detection device convenient to install.
Fig. 2 is a schematic diagram of a test for an apparatus for rapidly detecting internal resistance of a battery on line, which is convenient to install according to an embodiment of the present invention.
Wherein:
1 internal resistance test monitoring system
11 control discharge load output module
12 control module output unit
13 sampling battery current module
14 gather battery monomer voltage module
15 interface display unit
2 electric power supply module
3 discharge load
4 batteries.
Detailed Description
The technical scheme of the utility model is further specifically described by the following embodiments and the accompanying drawings.
The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.
Fig. 1 is a schematic structural diagram of a module of the device for rapidly detecting internal resistance of a battery on line, which is convenient to install. It mainly contains an internal resistance test monitoring system 1, and this internal resistance test monitoring system 1 mainly contains: the system comprises an interface display unit 15 (capable of displaying single voltage and internal resistance), a single battery voltage acquisition module 14, a battery current sampling module 13, a control module output unit 12 and a discharge load control output module 11. The on-line rapid battery internal resistance detection device which is formed by the internal resistance test monitoring system 1 and is convenient to install can rapidly realize on-line battery internal resistance test by the wiring terminal, and the device is convenient to wire.
The internal resistance testing and monitoring system 1 can detect the internal resistance of the battery 4 by matching with the power supply module 2 and the discharging load 3, wherein the control module output unit 12 can be connected with the power supply module 2, the battery monomer voltage acquisition module 14 and the battery current sampling module 13 are connected with the battery 4, and the discharging load control output module 11 can be connected with the discharging load 3.
As shown in fig. 2, the utility model is an application apparatus formed by matching the device for rapidly detecting the internal resistance of the battery on line, which is convenient to install, with each bottom layer module.
The application mode is as follows:
the method comprises the steps of firstly carrying out periodic battery pack discharge control, then collecting single voltage and current signals, and carrying out data processing to realize the on-line detection of the single internal resistance of the storage battery pack, wherein the method is to carry out periodic battery discharge by controlling the output voltage of a charging module. The discharge control of the storage battery pack does not need an additional device, and the capacity and the performance of the storage battery pack are not influenced; different from other measurement methods, the measurement method only measures the storage battery pack in a static state, and the measurement result reflects the monomer internal resistance condition of each battery of the storage battery pack, so that the method has more guiding significance on the loading capacity of the storage battery pack.
The utility model relates to a device for rapidly detecting the internal resistance of a battery on line, which is convenient to install, and is connected with a bottom layer module (comprising a power supply module of a charger and a battery inspection module) by adopting a communication interface RS 485.
In the application of the embodiment, the measurement of the internal resistance of the battery is realized by adopting the following steps:
1. discharge control
In the present specific implementation, a measuring device is configured according to the schematic diagram shown in fig. 2, and the positions of battery voltage and battery current marked in fig. 2 are correspondingly connected with the circuit modules or units for measuring voltage and current corresponding to the device for quickly detecting the internal resistance of the battery on line, which is convenient to install.
Then, the device for rapidly detecting the internal resistance of the battery on line, which is convenient to install, can realize the periodic discharge control by utilizing a charger with adjustable output voltage and a load (or an external discharge load) in a universal power supply system, and the whole equivalent circuit structure of the device is shown in fig. 2.
Gather monomer voltage and current signal circuit module, concrete working method does: during the normal operation of the power supply system, the circuit module measures the voltage and the current at two ends of each storage battery, and takes the single voltage and the single current at 2 different stages as the quantity to be detected to obtain the sequence V1 and V2 of the voltage and the sequence I1 and I2 of the current of each storage battery.
The data processing specifically comprises: and interpolating the sampled sequences V1 and V2 of the terminal voltage and the sampled sequences I1 and I2 of the current of each storage battery to obtain the internal resistance value of each storage battery. The calculation formula is as follows:
R＝(V1-V2)/(I1-I2)
in the embodiment, the tested object is an 18-section 12V100AH valve-regulated sealed maintenance-free lead-acid battery pack. The monitoring host (on-line rapid detection equipment for the internal resistance of the battery) is THJK005G-ZL-NZ12V and is provided with a 4.3-inch color touch screen, and the monitoring host is provided with a battery inspection module for detecting the voltage of a single battery and detecting 1 group of 108 batteries.
The following integrated data acquisition functional modules can be configured:
the battery inspection module: DCXJ-19 detects the voltage of 19 batteries and the temperature of 1 path;
the battery inspection module: DCXJ-55 detects 55 battery voltages and 2-way temperature;
the general power supply system comprises a charging module 110V/220V series AC/DC conversion or DC/DC conversion.
Through experimental tests, the corresponding monomer internal resistances are respectively 20 milliohms, 21 milliohms, 33 milliohms and the like through calculation.
By adopting the on-line rapid detection equipment for the internal resistance of the battery, which is convenient to install, no additional device is needed for controlling the charge and discharge of the storage battery when in use, and no additional influence is caused on the capacity and the performance of the storage battery; different from other measurement methods, the measurement method only measures the storage battery pack in a static state, and the measurement result of the utility model reflects the comprehensive condition of the internal resistance reflected by the single battery of the storage battery pack in the operation, so the method has more guiding significance on the loading capacity of the battery.
Although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the utility model.
Claims (4)
1. The utility model provides a simple to operate's online short-term test battery internal resistance equipment which characterized in that contains: an internal resistance test monitoring system (1), this internal resistance test monitoring system (1) mainly contains: an interface display unit (15), a battery monomer voltage acquisition module (14), a battery current sampling module (13), a control module output unit (12) and a discharge load control output module (11),
wherein: the battery cell voltage acquisition module (14) and the battery current sampling module (13) are connected with a battery, the control module output unit (12) is connected with the power supply module (2) of the charger, and the control discharge load output module (11) is connected with the discharge load (3), so that the internal resistance test monitoring system (1) forms an online rapid battery internal resistance detection device convenient to install.
2. The device for rapidly detecting the internal resistance of the battery on line and with convenient installation according to claim 1, wherein the internal resistance test monitoring system (1) is connected with the bottom layer module by a communication interface RS 485.
3. The on-line rapid battery internal resistance detection device convenient to mount according to claim 2, wherein the bottom layer module comprises a power supply module and a battery inspection module of a charger.
4. The device for rapidly detecting the internal resistance of the battery on line, which is convenient to install, according to claim 1, is characterized in that: the interface display unit (15) can display the monomer voltage and the internal resistance of the battery to be detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121717316.4U CN215340232U (en) | 2021-07-27 | 2021-07-27 | Simple to operate's online short-term test battery internal resistance equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121717316.4U CN215340232U (en) | 2021-07-27 | 2021-07-27 | Simple to operate's online short-term test battery internal resistance equipment |
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| Publication Number | Publication Date |
|---|---|
| CN215340232U true CN215340232U (en) | 2021-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121717316.4U Active CN215340232U (en) | 2021-07-27 | 2021-07-27 | Simple to operate's online short-term test battery internal resistance equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215340232U (en) |
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2021
- 2021-07-27 CN CN202121717316.4U patent/CN215340232U/en active Active
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