CN201788265U - A battery protection board tester - Google Patents

Abstract

The utility model discloses a battery protection board tester, which is used in conjunction with the battery protection board, wherein: it includes a main control CPU, a voltage module control host, a voltage output module, a current control module and a test module, and the voltage module controls the host It is connected with the main control CPU and the voltage output module, and the voltage module is connected with the battery protection board; the test module is connected with the main control CPU and the battery protection board. The utility model can simulate the real use situation to ensure more real and comprehensive test performance of the protection board. It can test the performance of the lithium battery protection board with 1 to 4 cells and various performance index parameters. It adopts microcomputer full digital control, and has a high-speed, accurate and stable lithium battery protection board tester.

Description

A battery protection board tester

technical field

The utility model belongs to battery testing equipment, which can test whether the battery is good or bad, and specifically refers to an instrument for testing the performance of a lithium battery protection board.

Background technique

With the improvement of the manufacturing technology of lithium batteries, the battery cells inside the lithium battery have developed from ordinary single cells to two, three, and four cells, and the corresponding lithium battery protection boards have also been upgraded to corresponding two, three, and four strings. The traditional lithium battery protection board tester is divided into three categories: 1. It can only detect a single or at most two lithium battery protection boards; ; Three, use the potentiometer to adjust the setting parameters. The first or second type of tester cannot detect lithium battery protection boards with more than three strings; for the third type of tester, it is necessary to manually adjust the test parameters, which is not conducive to large-scale production manufacturers. Production increases efficiency.

Utility model content

The purpose of this utility model is to provide a battery protection tester, which can overcome the above-mentioned defects, and can test the protection board and various performance index parameters of batteries with less than four sections.

To achieve the above object, the utility model adopts the following structure:

A battery protection board tester, used in conjunction with the battery protection board, wherein: it includes a main control CPU, a voltage module control host, a voltage output module, a current control module and a test module, the voltage module control host and the main The control CPU is connected with the voltage output module, and the voltage module is connected with the battery protection board; the test module is connected with the main control CPU and the battery protection board.

The above voltage module control host is connected to the main control CPU and the voltage output module through signal lines.

The above-mentioned voltage module is connected with the battery protection board through wires.

The above test module is connected to the main control CPU through a signal line; the test module is connected to the battery protection board through a wire,

Preferably, the above-mentioned test module is an overvoltage detection module.

Preferably, the above test module further includes an undervoltage detection module.

Preferably, the above test module further includes a short circuit detection module and an overcurrent detection module.

Preferably, the above-mentioned test module also includes an SBS communication module and a DateFlash detection module for reading, detecting and modifying the SBS data and DateFlash data in the chip of the protection board through wires.

Preferably, the above test module also includes an internal resistance detection module capable of measuring the quiescent current of the tested lithium battery protection board.

Preferably, the above test module further includes a temperature detection module capable of detecting corresponding temperatures at both ends of the thermistor on the lithium battery protection board.

After adopting the above-mentioned structure, the utility model can simulate the real use situation, so as to ensure a more real and comprehensive test of the performance of the protection board. It can test the performance of the lithium battery protection board with 1 to 4 cells and the parameters of various performance indicators. It adopts full digital control of the microcomputer and has a high-speed, accurate and stable lithium battery protection board tester.

Description of drawings

Figure 1 is a schematic diagram of the electrical structure frame of the new power module;

Fig. 2 is a schematic diagram of the electrical structure frame of the new test module.

Detailed ways

The utility model discloses a battery protection board tester, which includes a main control CPU1, a voltage module control host 2, a voltage output module 3, a current control module 4 and a test module 5, wherein:

As shown in Figure 1, there are four voltage module control hosts 2, which are respectively control hosts 21, 22, 23, and 24. The voltage module control host 2 and the main control CPU1 are connected to the computer 6 through signal lines;

There are also four voltage output modules 3, respectively 31, 32, 33, 34, which are respectively connected to the voltage module control hosts 21, 22, 23, 24, and through wires, the output of the four voltage output modules 31, 32, 33, 34 Connect to the corresponding cell contacts of the battery protection board 7 to simulate four strings of lithium battery cells, and can output different voltages at the same time to simulate the working status of the lithium battery protection board for multiple strings of cells in various situations. Connect 1 to 3 voltage output modules to measure lithium battery protection boards with less than four strings;

The current control module 4 is connected to the main control CPU 1 through a signal line, and connected to the battery protection board 7 through a wire, so that a current flows through the protection board 7 and the simulated electric core (voltage output module), simulating a real use situation, to ensure more Authentic, comprehensive protection board performance.

When in use, the operator sets the details of the test process and test items on the computer 6, and sends them to the main control CPU1 and the four voltage module control hosts 2, so that the main control CPU1 and the control host 2 independently control each other. module; four voltage output modules 31, 32, 33, 34 accept the control of the control host 21, 22, 23, 24, output voltage independently, and connect the output of the four voltage output modules to the four-string battery protection board 7 through wires On the corresponding cell contacts, simulate four strings of lithium battery cells, and can output different voltages at the same time to simulate the working status of lithium battery protection boards under various circumstances, and can also connect 1 to 3 pieces The voltage output module is used to measure the lithium battery protection board of less than four strings; while giving the voltage, the main control CPU1 can also control the output current of the current output module, and connect the current output module with the battery protection board through wires to make the protection The board and the simulated cell (voltage output module) flow a current to simulate the real use situation to ensure a more realistic and comprehensive test of the performance of the protection board.

As shown in Figure 2, the test module 5 is connected to the main control CPU1 through a signal line; the test module 5 is connected to the lithium battery protection board 7 through a wire, so as to send or read the voltage;

The test module 5 includes an overvoltage detection module 51, an undervoltage detection module 52, a short circuit detection module 53, an overcurrent detection module 54, an SBS communication module 55, an internal resistance detection module 56, a DateFlash detection module 57, a temperature detection module 58 and others Function detection module 59; SBS communication module 55 and DateFlash detection module 57 can read, detect, modify SBS data and DateFlash data in the chip of lithium battery protection board 7 by wire; Regulate the output voltage size of voltage output module by computer 6 After reading the voltage of the corresponding test point in the protection board through the overvoltage detection module 51 and the undervoltage detection module 52, it can be known whether the lithium battery protection board has carried out overvoltage and undervoltage protection, and whether it is under the corresponding voltage state The overvoltage and undervoltage protection is normally released; the current size provided by the computer 6 is adjusted by the current output module, and the corresponding test points on the lithium battery protection board 7 are read by the overcurrent measurement module 54 and the short circuit measurement module 53 by wires voltage, it can be judged whether the lithium battery protection board has carried out overcurrent protection and short circuit protection; under normal operating conditions, the static current and other data of the lithium battery protection board can be measured through the internal resistance detection module 56; through temperature detection The module 58 reads the voltage at both ends of the thermistor on the lithium battery protection board, and calculates the resistance value of the thermistor at this time through software to find its corresponding temperature. All the measurement data results are transmitted to the main control CPU1 by each test module through the signal line group, and then transmitted to the computer 6 by the main control CPU1 through the signal line for display.

Although the utility model has been described by this embodiment, those of ordinary skill in the art know that there are many variations and changes in the surface style and size of the utility model without departing from the spirit of the utility model, and it is hoped that the appended claims include these deformation and change without departing from the spirit of the utility model.

Claims (10)

1. A battery protection board tester, used in conjunction with a battery protection board, is characterized in that: it includes a main control CPU, a voltage module control host, a voltage output module, a current control module and a test module, and the voltage module control host and The main control CPU is connected to the voltage output module, and the voltage module is connected to the battery protection board; the test module is connected to the main control CPU and the battery protection board. 2 . The battery protection board tester according to claim 1 , wherein the voltage module control host is connected to the main control CPU and the voltage output module through signal lines. 3 . 3. The battery protection board tester according to claim 1, wherein the voltage module is connected to the battery protection board through wires. 4. The battery protection board tester as claimed in claim 1, 2 or 3, characterized in that: said test module is connected to said main control CPU through a signal line; said test module is connected to said test module through a wire connected to the battery protection board. 5. The battery protection board tester according to claim 1, 2 or 3, wherein the test module is an overvoltage detection module. 6. The battery protection board tester according to claim 5, wherein the test module further includes an undervoltage detection module. 7. The battery protection board tester according to claim 5, wherein said test module further includes a short circuit detection module and an overcurrent detection module. 8. The battery protection board tester as claimed in claim 5, characterized in that: said test module also includes SBS communication for reading, detecting and modifying SBS data and DateFlash data in the chip of the protection board through wires module and DateFlash detection module. 9. battery protection board tester as claimed in claim 5, is characterized in that: described test module also comprises the internal resistance detection module that can measure the quiescent current of tested lithium battery protection board. 10. The battery protection board tester as claimed in claim 5, wherein the test module further includes a temperature detection module capable of detecting corresponding temperatures at both ends of the thermistor on the lithium battery protection board. the

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