CN216848090U - Multichannel lithium cell utmost point ear shell short circuit detection device - Google Patents
Multichannel lithium cell utmost point ear shell short circuit detection device Download PDFInfo
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- CN216848090U CN216848090U CN202220108503.0U CN202220108503U CN216848090U CN 216848090 U CN216848090 U CN 216848090U CN 202220108503 U CN202220108503 U CN 202220108503U CN 216848090 U CN216848090 U CN 216848090U
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Abstract
The utility model discloses a multichannel lithium battery core tab shell short circuit detection device, which belongs to the technical field of lithium battery cores and comprises an input filter, a power panel, a main control panel, a key panel, a communication panel, an insulation measuring panel, a power module, a three-channel switching output panel and a high-voltage output terminal, wherein the input filter is respectively connected with the power module and the power panel, the power panel is connected with the main control panel, the main control panel is respectively connected with the key panel, the communication panel, the power module and the insulation measuring panel, the three-channel switching output panel is respectively connected with the insulation measuring panel, the power module and the high-voltage output terminal, the internal switching of different output terminals is carried out through the three-channel switching output panel to realize multichannel measurement, the detection of the insulation condition between a positive electrode tab, a positive electrode tab and a negative electrode tab and a shell can be realized by replacing three devices of the existing production line by one device, the test flow of a matched manufacturer of the lithium battery automatic production line is simplified through high integration, the cost is low, and the size is small.
Description
Technical Field
The utility model relates to a lithium cell technical field especially relates to a multichannel lithium cell utmost point ear shell short circuit detection device.
Background
The power lithium battery used by the new energy automobile is divided into a soft type and a hard type, and the packaging structures respectively have advantages and disadvantages. However, the insulation condition of the outer shell and the positive and negative electrode tabs of the soft pack or the hard pack (square-shell battery and cylindrical battery) is related to the safety of the battery. The battery module is a plurality of PACKs that constitute by several to hundreds battery cores through parallelly connected or series connection, and if the insulation is bad can lead to the short circuit between the parallelly connected or series connection battery, shortens battery life, and serious can lead to the smoking to catch fire, takes place danger.
Before liquid injection, the lithium battery needs to detect the insulation conditions of the positive and negative electrode lugs, the positive electrode lug to the shell and the negative electrode lug to the shell. The production line of present battery factory needs three instruments to realize the detection to the three insulating condition of a battery core: an impulse type lithium cell short circuit detector or an insulation resistance tester tests the insulation condition of the positive and negative electrode lugs, and the other two insulation resistance testers test the insulation condition of the two lugs to the shell. Three instruments occupy large space, and are high in cost and complex in wiring.
SUMMERY OF THE UTILITY MODEL
The utility model provides a multichannel lithium cell utmost point ear shell short circuit detection device aims at solving foretell technical defect.
The utility model provides a specific technical scheme as follows:
the utility model provides a pair of multichannel lithium cell utmost point ear shell short circuit detection device includes input filter, power strip, main control board, keypad, communication board, insulating measuring board, power module, three channels switch output board and high-pressure output terminal, wherein, input filter respectively with power module with the power strip is connected, the power strip with the main control board is connected, the main control board respectively with the keypad the communication board power module with insulating measuring board is connected, three channels switch output board respectively with insulating measuring board power module with high-pressure output terminal connects.
Optionally, an input end of the input filter is connected to the single-phase power supply module, and two output ends of the input filter are respectively connected to the power module and the power board.
Optionally, the main control board is in bidirectional communication connection with the key board, the communication board, the power module and the insulation measurement board, and the three-channel switching output board is in unidirectional communication connection with the insulation measurement board, the power module and the high-voltage output terminal.
Optionally, the input end of the power panel is connected to the output end of the input filter, and the output end of the power panel is connected to the input end of the main control panel.
Optionally, the input filter is configured to suppress conducted interference and radiated interference generated by a high-frequency switch of the power device, and the power board includes an input overvoltage and undervoltage abnormal protection circuit.
Optionally, the power board supplies power to the key board, the communication board, the insulation measuring board and the power module through the main control board, and the power module includes a power frequency transformer, a high voltage board and a discharge board.
The utility model discloses following beneficial technological effect has:
the utility model provides a multichannel lithium cell tab shell short circuit detection device, which comprises an input filter, a power panel, a main control panel, a key panel, a communication panel, an insulation measuring panel, a power module, a three-channel switching output panel and a high-voltage output terminal, wherein, the input filter is respectively connected with the power module and the power panel, the power panel is connected with the main control panel, the main control panel is respectively connected with the key panel, the communication panel, the power module and the insulation measuring panel, the three-channel switching output panel is respectively connected with the insulation measuring panel, the power module and the high-voltage output terminal, the internal switching of different output terminals is carried out by the three-channel switching output panel to realize the multichannel measurement, the detection of the insulation condition between a positive electrode tab, a positive electrode tab and a shell and a negative electrode tab can be realized, one device replaces three devices of the existing production line, the test flow of a lithium cell automation production line matching manufacturer is simplified through high integration, low cost and small volume.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is the utility model discloses a multichannel lithium cell utmost point ear shell short circuit detection device's frame construction schematic diagram.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It is right to combine below fig. 1 the utility model discloses a multichannel lithium cell utmost point ear shell short circuit detection device carries out detailed explanation, the utility model discloses a multichannel lithium cell utmost point ear shell short circuit detection device can realize through switching the detection to the positive negative pole ear of lithium cell, positive pole ear to shell, the insulating condition between the negative pole ear to the shell.
Referring to fig. 1, the embodiment of the utility model provides a multichannel lithium cell utmost point ear shell short circuit detection device includes input filter 1, power strip 2, main control board 3, keypad 4, communication board 5, insulating measuring plate 6, power module 7, output board 8 and high-pressure output terminal 9 are switched to three channels, wherein, input filter 1 is connected with power module 7 and power strip 2 respectively, power strip 2 is connected with main control board 3, main control board 3 respectively with keypad 4, communication board 5, power module 7 and insulating measuring plate 6 are connected, output board 8 is switched to three channels respectively with insulating measuring plate 6, power module 7 and high-pressure output terminal 9 are connected.
Referring to fig. 1, an input end of the input filter 1 is connected to the single-phase power supply module, and two output ends of the input filter 1 are respectively connected to the power module 7 and the power board 2. The main control board 3 is in bidirectional communication connection with the key board 4, the communication board 5, the power module 7 and the insulation measuring board 6, and the three-channel switching output board 8 is in unidirectional communication connection with the insulation measuring board 6, the power module 7 and the high-voltage output terminal 9. The input end of the power panel 2 is connected with the output end of the input filter 1, and the output end of the power panel 2 is connected with the input end of the main control panel 3. The power panel 2 supplies power to the key sheet 4, the communication board 5, the insulation measuring board 6 and the power module 7 through the main control board 3.
Referring to fig. 1, an input filter 1 is installed at a power supply port, and is used for suppressing conducted interference and radiated interference generated by a high-frequency switch of a power device, and has common-mode and differential-mode suppression capabilities, so that system reliability can be improved. The power panel 2 comprises an input overvoltage and undervoltage abnormal protection circuit. The functions of the main control board 3 include test voltage setting of the whole machine, real-time output voltage waveform sampling display of a tester, detection of a cell insulation impedance sampling value, result judgment, cell abnormity alarm and the like.
The power module 7 comprises a power frequency transformer, a high-voltage plate and a discharge plate and is mainly responsible for providing direct-current high voltage required by detection. The power frequency transformer provides the high-voltage primary voltage, and the requirement on the rated power of the transformer is high due to the fact that breakdown discharge exists in bad cells during detection. The high-voltage board is the core of pulse test, and is responsible for producing the high voltage that charges that the detection needs set for, and the voltage waveform on the utmost point ear of sampling electric core simultaneously listens the good and bad of electric core. The sampling resistor corresponds to the output impedance of the tester, and the larger the requirement is, the better the requirement is, and meanwhile, the requirement on precision can be met. After the test is finished, the discharge plate discharges electricity to the tested core, and the safety of workers on a subsequent station production line is guaranteed.
And the insulation measuring plate 6 realizes sampling of insulation resistance values between the anode and cathode lugs of the tested core and the shell. The insulation resistance between the anode and cathode ears and the shell is high and reaches dozens of G omega. Therefore, the application improves the defect of insufficient measurement range of the conventional insulation meter and increases the measurement range of the instrument to 100G omega. The sampling of the small current signal is realized by adopting the radio frequency wire, and the actual insulation resistance value can be stably displayed.
The three-channel switching output board can switch the high-speed dry reed relay to carry out internal switching of different output terminals according to instructions of the main control board, and multi-channel measurement is realized. The board is also provided with an open circuit detection circuit which judges whether a probe pressed to the shell punctures the insulating layer or not and contacts the aluminum layer to realize good conduction. Because the insulation impedance between the positive and negative electrode tabs and the shell is up to G omega, if the production line probe is not in good contact with the battery cell shell, the measurement result is invalid, and whether the insulation between the tab and the shell is good or not is not really detected, so that detection omission is caused.
The utility model provides a multichannel lithium cell tab shell short circuit detection device, which comprises an input filter, a power panel, a main control panel, a key panel, a communication panel, an insulation measuring panel, a power module, a three-channel switching output panel and a high-voltage output terminal, wherein, the input filter is respectively connected with the power module and the power panel, the power panel is connected with the main control panel, the main control panel is respectively connected with the key panel, the communication panel, the power module and the insulation measuring panel, the three-channel switching output panel is respectively connected with the insulation measuring panel, the power module and the high-voltage output terminal, the internal switching of different output terminals is carried out by the three-channel switching output panel to realize the multichannel measurement, the detection of the insulation condition between a positive electrode tab, a positive electrode tab and a shell and a negative electrode tab can be realized, one device replaces three devices of the existing production line, the test flow of a lithium cell automation production line matching manufacturer is simplified through high integration, low cost and small volume.
It is apparent that those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. The utility model provides a multichannel lithium cell utmost point ear shell short circuit detection device, its characterized in that, multichannel lithium cell utmost point ear shell short circuit detection device includes input filter, power strip, main control board, keypad, communication board, insulating measuring panel, power module, three channels switch output board and high-voltage output terminal, wherein, input filter respectively with power module with the power strip is connected, the power strip with the main control board is connected, the main control board respectively with the keypad the communication board the power module with insulating measuring panel connects, three channels switch output board respectively with insulating measuring panel the power module with high-voltage output terminal connects.
2. The device for detecting the short circuit of the tab and shell of the multi-channel lithium battery cell of claim 1, wherein an input end of the input filter is connected with a single-phase power supply module, and two output ends of the input filter are respectively connected with the power module and the power panel.
3. The device for detecting the short circuit of the tab and shell of the multi-channel lithium battery cell of claim 1, wherein the main control board is in bidirectional communication connection with the key board, the communication board, the power module and the insulation measuring board, and the three-channel switching output board is in unidirectional communication connection with the insulation measuring board, the power module and the high-voltage output terminal.
4. The device of claim 1, wherein the input end of the power board is connected to the output end of the input filter, and the output end of the power board is connected to the input end of the main control board.
5. The device for detecting the short circuit of the tab and shell of the multi-channel lithium battery cell of claim 1, wherein the input filter is used for suppressing conducted interference and radiated interference generated by a high-frequency switch of a power device, and the power panel comprises an input overvoltage and undervoltage abnormal protection circuit.
6. The device of claim 1, wherein the power board provides power to the keypad, the communication board, the insulation measurement board, and the power module via the main control board, and the power module comprises a power frequency transformer, a high voltage board, and a discharge board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220108503.0U CN216848090U (en) | 2022-01-17 | 2022-01-17 | Multichannel lithium cell utmost point ear shell short circuit detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220108503.0U CN216848090U (en) | 2022-01-17 | 2022-01-17 | Multichannel lithium cell utmost point ear shell short circuit detection device |
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| Publication Number | Publication Date |
|---|---|
| CN216848090U true CN216848090U (en) | 2022-06-28 |
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| CN202220108503.0U Active CN216848090U (en) | 2022-01-17 | 2022-01-17 | Multichannel lithium cell utmost point ear shell short circuit detection device |
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| CN (1) | CN216848090U (en) |
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- 2022-01-17 CN CN202220108503.0U patent/CN216848090U/en active Active
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