CN215641776U - Production test platform of storage battery monitoring module - Google Patents
Production test platform of storage battery monitoring module Download PDFInfo
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- CN215641776U CN215641776U CN202122014885.9U CN202122014885U CN215641776U CN 215641776 U CN215641776 U CN 215641776U CN 202122014885 U CN202122014885 U CN 202122014885U CN 215641776 U CN215641776 U CN 215641776U
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Abstract
The utility model discloses a production test platform of a storage battery monitoring module, which comprises the monitoring module and a test module connected with the monitoring module. The monitoring module comprises an excitation signal control circuit and a measuring circuit which are respectively connected with the testing module, a first MCU microcontroller which is respectively connected with the excitation signal control circuit and the measuring circuit, and a communication circuit which is connected with the first MCU microcontroller. The test module comprises a storage battery equivalent circuit, a communication port, a second MCU microcontroller, an LED indicator light and a key, wherein the storage battery equivalent circuit is respectively connected with the excitation signal control circuit and the measurement circuit, the communication port is connected with the communication circuit, the second MCU microcontroller is connected with the communication port, and the LED indicator light and the key are respectively connected with the second MCU microcontroller. The utility model has the advantages of wide test application range, light weight, stable test parameters, durable structure and waste avoidance.
Description
Technical Field
The utility model relates to the field of test platforms, in particular to a production test platform of a storage battery monitoring module.
Background
The storage battery monitor module is used for monitoring the storage battery in the operation and use process, and mainly aims to acquire some key parameters, such as voltage, current, temperature, internal resistance and the like. Therefore, in the production test link, a set of production test platform needs to be built, a standard test signal source is accessed, and the storage battery monitoring module is subjected to functional test and performance test to judge whether the storage battery monitoring module meets the requirements of product parameters.
At present, a conventional scheme of a common production test platform for a storage battery monitoring module is that in a production test link, a storage battery in a real object is used as a test object, and then data obtained by measuring a set of high-precision standard tables is used as a standard source, so that whether the monitoring function and performance of the storage battery monitoring module meet the technical parameter requirements can be tested. However, the above-mentioned method using the real storage battery as the test object has the following disadvantages: (1) the physical storage battery is heavy, for example, the weight of the storage battery of 12V 200AH or 2V 1000AH is generally about 50-75KG, and the storage battery is heavy and is not easy to move, thus being not beneficial to the operation of a production test link. (2) The internal resistance parameter of the physical storage battery comprises the following components: the physical connection resistance of each internal unit, the ion conductivity of the electrolyte, the activity degree of electrochemical reaction on the surface of the electrode, and the like. The internal resistance parameter of the real storage battery is a dynamically changing parameter, is influenced by a plurality of factors (including an environment temperature factor, an SOC charge state factor and the like), and is variable and not suitable to be used as a standard test signal source. (3) The physical storage battery is charged and discharged frequently in a short time in the test process, and the problems of storage battery aging and service life expiration exist in the process of testing and using a large amount of storage batteries, so that resource waste is caused.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, an object of the present invention is to provide a production test platform for a battery monitoring module, which has a wide test application range, is light and stable in test parameters, and has a durable structure and avoids waste.
In order to achieve the above purpose, the present invention provides a production test platform for a battery monitoring module, which includes a monitoring module and a test module connected to the monitoring module. The monitoring module comprises an excitation signal control circuit and a measuring circuit which are respectively connected with the testing module, a first MCU microcontroller which is respectively connected with the excitation signal control circuit and the measuring circuit, and a communication circuit which is connected with the first MCU microcontroller. The test module comprises a storage battery equivalent circuit, a communication port, a second MCU microcontroller, an LED indicator light and a key, wherein the storage battery equivalent circuit is respectively connected with the excitation signal control circuit and the measurement circuit, the communication port is connected with the communication circuit, the second MCU microcontroller is connected with the communication port, and the LED indicator light and the key are respectively connected with the second MCU microcontroller.
In some embodiments, the battery equivalent circuit includes a voltage source, and a resistor in series with the voltage source.
In some embodiments, the voltage source is a dc power supply; the resistor is a high-precision low-resistance resistor.
In some embodiments, the high-precision low-resistance resistor is selected from a resistance range of 0.5m omega-20 m omega matched with a physical storage battery, the resistor precision is +/-0.5%, and the temperature coefficient is 50 ppm/K.
In some embodiments, the high-precision low-resistance resistor packaging type is a 4-pin packaging type, wherein 2 pins are used for a load current channel, and the other independent 2 pins are used for a measurement sampling channel, so that errors caused by pin resistance values to the low resistance value of the resistor are eliminated.
The utility model has the advantages of wide test application range, light weight, stable test parameters, durable structure and waste avoidance. The physical storage battery can be simulated and replaced by a circuit model with a voltage source and a resistor connected in series, and then the adjustable constant-voltage direct current source and the high-precision low-resistance resistor are used as main units, and the standard component is used for replacing the physical storage battery and serving as a standard test signal source for a production test link. The storage batteries of different models can be simulated only by adjusting the parameters of the adjustable constant-voltage direct current source and the high-precision low-resistance resistor; and then, the first MCU microcontroller and the second MCU microcontroller are used as a main control unit, the first MCU microcontroller and the second MCU microcontroller are communicated with the tested storage battery monitoring module through the special communication port to obtain a measurement result, the validity of the measurement result is automatically judged according to a preset threshold value, a visual indication result is given, and the working efficiency of production testers is improved. In addition, a circuit formed by standard components replaces a physical storage battery to serve as a standard test signal source, physical storage batteries of different models can be simulated according to parameters of an adjustable constant-voltage direct current source and a high-precision low-resistance resistor, the method is suitable for actual production scale of each batch, namely flexible expansion is carried out as required, and low-cost copying can be carried out. Therefore, the test application range is wide, the light weight and the test parameters are stable, the structure is durable, and the waste is avoided.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural diagram of an equivalent circuit of a storage battery according to the present invention.
Detailed Description
The following describes the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1-2, a production test platform for a battery monitoring module includes a monitoring module and a test module connected to the monitoring module. The monitoring module comprises an excitation signal control circuit and a measuring circuit which are respectively connected with the testing module, a first MCU microcontroller which is respectively connected with the excitation signal control circuit and the measuring circuit, and a communication circuit which is connected with the first MCU microcontroller. The test module comprises a storage battery equivalent circuit, a communication port, a second MCU microcontroller, an LED indicator light and a key, wherein the storage battery equivalent circuit is respectively connected with the excitation signal control circuit and the measurement circuit, the communication port is connected with the communication circuit, the second MCU microcontroller is connected with the communication port, and the LED indicator light and the key are respectively connected with the second MCU microcontroller. The equivalent circuit of the storage battery comprises a voltage source and a resistor connected in series with the voltage source. The voltage source is a direct current power supply, and the resistor is a high-precision low-resistance resistor. The high-precision low-resistance resistor is selected from a resistance range of 0.5-20 m omega matched with a physical storage battery, the resistor precision is +/-0.5%, and the temperature coefficient is 50 ppm/K. The high-precision low-resistance resistor packaging type is a 4-pin packaging type, wherein 2 pins are used for a load current channel, and the other independent 2 pins are used for a measurement sampling channel, so that errors caused by pin resistance values to low resistance values of the resistor are eliminated. The first MCU microcontroller and the second MCU microcontroller adopt the chip model of MCU STM32F 030.
When the device is applied, the physical storage battery can be simulated to replace the physical storage battery by adopting a circuit model formed by serially connecting a voltage source and a resistor, then the device takes an adjustable constant-voltage direct current source and a high-precision low-resistance resistor as main units, and uses a standard component to replace the physical storage battery as a standard test signal source to be used in a production test link. The storage batteries of different models can be simulated only by adjusting the parameters of the adjustable constant-voltage direct current source and the high-precision low-resistance resistor; and then, the first MCU microcontroller and the second MCU microcontroller are used as a main control unit, the first MCU microcontroller and the second MCU microcontroller are communicated with the tested storage battery monitoring module through the special communication port to obtain a measurement result, the validity of the measurement result is automatically judged according to a preset threshold value, a visual indication result is given, and the working efficiency of production testers is improved. In addition, a circuit formed by standard components replaces a physical storage battery to serve as a standard test signal source, physical storage batteries of different models can be simulated according to parameters of an adjustable constant-voltage direct current source and a high-precision low-resistance resistor, the method is suitable for actual production scale of each batch, namely flexible expansion is carried out as required, and low-cost copying can be carried out. Therefore, the test application range is wide, the light weight and the test parameters are stable, the structure is durable, and the waste is avoided.
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept herein, and it is intended to cover all such modifications and variations as fall within the scope of the utility model.
Claims (5)
1. A production test platform of a storage battery monitoring module is characterized by comprising the monitoring module and a test module connected with the monitoring module;
the monitoring module comprises an excitation signal control circuit and a measuring circuit which are respectively connected with the testing module, a first MCU microcontroller which is respectively connected with the excitation signal control circuit and the measuring circuit, and a communication circuit which is connected with the first MCU microcontroller;
the test module comprises a storage battery equivalent circuit, a communication port, a second MCU (microprogrammed control unit) and an LED indicator light and a key, wherein the storage battery equivalent circuit is respectively connected with the excitation signal control circuit and the measurement circuit, the communication port is connected with the communication circuit, the second MCU microcontroller is connected with the communication port, and the LED indicator light and the key are respectively connected with the second MCU microcontroller.
2. The production test platform of the battery monitoring module as claimed in claim 1, wherein the battery equivalent circuit comprises a voltage source and a resistor connected in series with the voltage source.
3. The production test platform of a battery monitoring module as set forth in claim 2, wherein said voltage source is a dc power source; the resistor is a high-precision low-resistance resistor.
4. The production test platform of the storage battery monitoring module as claimed in claim 3, wherein the high-precision low-resistance resistor is selected from a resistance range of 0.5m Ω -20m Ω matched with a physical storage battery, the resistor precision is +/-0.5%, and the temperature coefficient is 50 ppm/K.
5. The production test platform of the storage battery monitoring module according to claim 3, wherein the high-precision low-resistance resistor packaging type is a 4-pin packaging type, wherein 2 pins are used for a load current channel, and in addition, an independent 2 pin is used for a measurement sampling channel, so that an error caused by the pin resistance value to the low resistance value of the resistor is eliminated.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122014885.9U CN215641776U (en) | 2021-08-25 | 2021-08-25 | Production test platform of storage battery monitoring module |
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| CN202122014885.9U CN215641776U (en) | 2021-08-25 | 2021-08-25 | Production test platform of storage battery monitoring module |
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| CN215641776U true CN215641776U (en) | 2022-01-25 |
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| CN202122014885.9U Active CN215641776U (en) | 2021-08-25 | 2021-08-25 | Production test platform of storage battery monitoring module |
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2021
- 2021-08-25 CN CN202122014885.9U patent/CN215641776U/en active Active
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