CN215377487U - Protection circuit board for detecting disconnection of sampling line of lithium battery pack - Google Patents
Protection circuit board for detecting disconnection of sampling line of lithium battery pack Download PDFInfo
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- CN215377487U CN215377487U CN202121761071.5U CN202121761071U CN215377487U CN 215377487 U CN215377487 U CN 215377487U CN 202121761071 U CN202121761071 U CN 202121761071U CN 215377487 U CN215377487 U CN 215377487U
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- 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 utility model discloses a protection circuit board for detecting disconnection of a sampling line of a lithium battery pack, which comprises a protection circuit board body, wherein the protection circuit board body comprises an acquisition module, a monitoring module, a control module, a protection module, a repair module and a power module, and the acquisition module is electrically connected with the monitoring module; the lithium battery power supply device mainly comprises an acquisition module, a monitoring module, a control module, a protection module, a repair module and a power module, wherein the acquisition module, the monitoring module, the control module, the protection module and the repair module are matched with the power module, so that a circuit board can supply power to the monitoring module, the control module and the repair module through the power module after being disconnected, when the protection circuit board is restored to be connected with a lithium battery, the control module directly controls the repair module to repair a protection circuit of the protection circuit board, and the control module controls the protection module to continue to protect the lithium battery after the repair is finished, so that the protection circuit can be timely repaired and connected to a certain extent, and convenience is brought to a user.
Description
Technical Field
The utility model relates to the technical field of circuit boards, in particular to a protection circuit board for detecting disconnection of a sampling line of a lithium battery pack.
Background
The lithium battery is a battery which uses lithium metal or lithium alloy as anode and cathode materials and uses non-aqueous electrolyte solution, the rechargeable lithium battery is required to be protected because the rechargeable lithium battery cannot be overcharged, overdischarged, overcurrent, short-circuited and charged and discharged at ultrahigh temperature due to the material of the rechargeable lithium battery, the protection mode of the lithium battery is usually realized by a protection circuit board, however, most of the existing protection circuit boards are used for protecting the lithium battery, the circuit board is disconnected due to accidental impact or vibration in the external environment, the disconnected circuit board usually does not have a power supply component, so that the protection circuit board cannot continuously monitor the connection condition of the protection circuit in real time, when the lithium battery is connected with the circuit board again, the protection circuit of the protection circuit board cannot be repaired and connected in time, which brings inconvenience to users, and therefore people need to provide the protection circuit board for detecting the disconnection of the sampling line of the lithium battery pack.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a protective circuit board for detecting disconnection of a sampling line of a lithium battery pack, which can supply power to the circuit board through a power supply module after disconnection through the matching of the acquisition module, the monitoring module, the control module, the protective module, the repair module and the power supply module, so that the monitoring module and the repair module continue to work, the connection state of a protective circuit loop of the protective circuit board is monitored in real time, and the problems in the background art are solved.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a detect protection circuit board of lithium cell group sampling line disconnection, includes the protection circuit board body, the protection circuit board body includes collection module, monitoring module, control module, protection module, restoration module and power module, collection module and monitoring module electric connection, monitoring module and control module electric connection, control module and protection module and restoration module electric connection, power module respectively with monitoring module, control module and restoration module electric connection, the restoration module is including switching on subassembly and voltage monitoring subassembly, switch on subassembly and voltage monitoring subassembly electric connection.
Preferably, the collection module comprises a current collection assembly and a signal amplification assembly, one end of the current collection assembly is electrically connected with the signal amplification assembly, and the other end of the current collection assembly is electrically connected with the lithium battery.
Preferably, the current collection subassembly includes the current collector, the signal amplification subassembly includes the triode, electrically connected with resistance R1, resistance R2, resistance R3, resistance R4 and resistance R5 between current collector and the triode, the one end and the one end of resistance R4 of resistance R5 are connected, the one end of resistance R5 and resistance R4 all is connected with the one end of triode, resistance R5's other end ground connection, resistance R4's the other end is connected with the one end of current collector.
Preferably, the monitoring module comprises a current monitoring sensor, one end of the current monitoring sensor is electrically connected with a diode D1 and a diode D2, the diode D1 is connected with the diode D2 in parallel, and the other end of the current monitoring sensor is electrically connected with a diode D3.
Preferably, the control module comprises a single chip and a plurality of control switches, the single chip is electrically connected with the plurality of control switches, and the plurality of control switches are electrically connected with the protection module, the repair module and the power module.
Preferably, the protection module comprises a FUSE, a battery cell BAT, a control IC and two MOS tubes, the FUSE is electrically connected with the battery cell BAT, a capacitor C1 is electrically connected between the battery cell BAT and the control IC, and the two MOS tubes are respectively electrically connected with the control IC.
Preferably, the voltage monitoring subassembly includes two voltage monitoring wares, it includes MOS switch and control chip to switch on the subassembly, two the voltage monitoring ware is connected with the both ends that the MOS switch is connected respectively, the other end and the control chip of MOS switch are connected, control chip's one end and power module electric connection, one MOS switch and protection module electric connection, another MOS switch and monitoring module electric connection.
Preferably, the power module comprises a power supply assembly, a charging assembly and a charging protection assembly, the power supply assembly is electrically connected with the charging assembly, the charging assembly is electrically connected with the charging protection assembly, and the charging protection assembly is electrically connected with the power connector.
Preferably, the power supply assembly comprises a rechargeable lithium ion button cell, the standard voltage of the rechargeable lithium ion button cell is 3V, and the charging voltage of the rechargeable lithium ion button cell is 2.8-3.3V.
Preferably, the charging protection assembly comprises a charging protection IC and a voltage converter IC, the charging assembly comprises a charging plug, the charging plug is electrically connected with the voltage converter IC, the voltage converter IC is electrically connected with the charging protection IC, and the charging protection IC is electrically connected with the rechargeable lithium ion button battery.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model mainly enables a circuit board to supply power to the monitoring module, the control module and the repairing module through the power module after the circuit board is disconnected through the matching of the acquisition module, the monitoring module, the control module, the protection module and the repairing module, so that the monitoring module and the repairing module continue to work, the connection condition of the protection circuit board is monitored in real time through the monitoring module, when the protection circuit board is restored to be connected with a lithium battery, the control module directly controls the repairing module to repair a protection circuit of the protection circuit board, and the protection module is controlled to continue to protect the lithium battery through the control module after the repairing is finished, so that the protection circuit can be timely repaired and connected to a certain extent, and convenience is brought to a user.
Drawings
FIG. 1 is a block diagram of the system of the present invention;
FIG. 2 is a circuit diagram of a current collector of the present invention;
FIG. 3 is a circuit diagram of a monitoring module according to the present invention;
fig. 4 is a circuit diagram of the protection module of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: a protection circuit board for detecting disconnection of a sampling line of a lithium battery pack comprises a protection circuit board body, wherein the protection circuit board body comprises an acquisition module, a monitoring module, a control module, a protection module, a repair module and a power module, the acquisition module is electrically connected with the monitoring module, the monitoring module is electrically connected with the control module, the control module is electrically connected with the protection module and the repair module, the power module is respectively electrically connected with the monitoring module, the control module and the repair module, and the monitoring module, the control module, the protection module and the repair module are matched with the power module, so that the monitoring module, the control module and the repair module are powered by the power module after the circuit board is disconnected, and the monitoring module and the repair module continue to work;
the collection module includes current collection subassembly and signal amplification subassembly, the one end and the signal amplification subassembly electric connection of current collection subassembly, the other end and the lithium cell electric connection of current collection subassembly, the current collection subassembly includes the current collector, the signal amplification subassembly includes the triode, electric connection has resistance R1 between current collector and the triode, resistance R2, resistance R3, resistance R4 and resistance R5, the one end and the one end of resistance R4 of resistance R5 are connected, the one end of resistance R5 and resistance R4 all is connected with the one end of triode, resistance R5's other end ground connection, the other end and the one end of current collector of resistance R4 are connected, be the circuit diagram of current collector like FIG. 2, gather the electric current of lithium cell through the current collector.
The monitoring module comprises a current monitoring sensor, one end of the current monitoring sensor is electrically connected with a diode D1 and a diode D2, a diode D1 is connected with a diode D2 in parallel, the other end of the current monitoring sensor is electrically connected with a diode D3, and fig. 3 is a circuit diagram of the monitoring module, and the connection state between the lithium battery and the protection circuit board body is monitored in real time through the current monitoring sensor;
the control module comprises a single chip microcomputer chip and a plurality of control switches, the single chip microcomputer chip is electrically connected with the control switches, the control switches are electrically connected with the protection module, the repair module and the power module respectively, different control switches are controlled through the single chip microcomputer chip, and the protection module, the repair module and the power module are controlled to start and stop through the different control switches;
the protection module comprises a FUSE FUSE, a battery cell BAT, a control IC and two MOS tubes, wherein the FUSE FUSE is electrically connected with the battery cell BAT, a capacitor C1 is electrically connected between the battery cell BAT and the control IC, the number of the MOS tubes is two, the two MOS tubes are respectively electrically connected with the control IC, a circuit loop connected between the protection circuit and the lithium battery is protected through the FUSE FUSE as shown in a circuit diagram of the protection module in figure 4, and when the current in the circuit loop fluctuates, namely the current is larger or smaller than the normal working current, the FUSE FUSE is disconnected, so that the lithium battery is protected;
the repair module comprises a conduction assembly and a voltage monitoring assembly, the conduction assembly is electrically connected with the voltage monitoring assembly, the voltage monitoring assembly comprises two voltage monitors, the conduction assembly comprises an MOS switch and a control chip, the two voltage monitors are respectively connected with two ends of the MOS switch, the other end of the MOS switch is connected with the control chip, one end of the control chip is electrically connected with the power module, one MOS switch is electrically connected with the protection module, and the other MOS switch is electrically connected with the monitoring module;
the power supply module comprises a power supply assembly, a charging assembly and a charging protection assembly, the power supply assembly is electrically connected with the charging assembly, the charging assembly is electrically connected with the charging protection assembly, the charging protection assembly is electrically connected with the power connector, the power supply assembly comprises a rechargeable lithium ion button cell, the standard voltage of the rechargeable lithium ion button cell is 3V, the charging voltage of the rechargeable lithium ion button cell is 2.8-3.3V, and the protection module, the control module and the monitoring module are powered by the rechargeable lithium ion button cell;
the charging protection assembly comprises a charging plug, the charging plug is electrically connected with the voltage converter IC, the voltage converter IC is electrically connected with the charging protection IC, the charging protection IC is electrically connected with the rechargeable lithium ion button cell, when the rechargeable lithium ion button cell is charged, commercial power is converted into charging voltage of the rechargeable lithium ion button cell through the voltage converter IC and then is charged, and the charging protection IC protects the rechargeable lithium ion button cell from overcharging when charging;
it should be noted that the rechargeable lithium-ion button cell battery is of model ML2032, and the corresponding parameters are: the standard capacity is 65mAh, the standard current is 0.3mA, and the standard circulation is 300; the model number of the charging protection IC is DW01V, and the corresponding power is 4.2V; the voltage converter IC is used with model DAC 0832;
when the lithium battery is disconnected with the protection circuit board body, the protection module, the monitoring module and the control module are powered by the rechargeable lithium ion button cell battery, so that the current monitoring sensor and the voltage monitor continue to work, the connection state of the protection circuit board is monitored in real time by the current monitor, when the protection circuit board is connected with the lithium battery again, the current monitoring sensor senses the current between the lithium battery and the circuit board body and transmits the sensed current signal to the singlechip chip, the singlechip chip directly controls the repair module to repair the circuit, namely when the voltage monitor connected with the monitoring module monitors the voltage signal, the control chip controls the other voltage monitor to stop working, a loop connected with the rechargeable lithium ion button cell battery is disconnected at the moment, and the voltage monitor connected with the monitoring module transmits the signal to the singlechip chip, the protection module is controlled to start through the single chip microcomputer chip, the lithium battery is continuously protected through the protection module, the protection circuit can be timely repaired and connected to a certain extent, and convenience is brought to a user.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a detect protection circuit board of lithium cell group sampling line disconnection, includes the protection circuit board body, its characterized in that: the protection circuit board body comprises an acquisition module, a monitoring module, a control module, a protection module, a repair module and a power module, wherein the acquisition module is electrically connected with the monitoring module, the monitoring module is electrically connected with the control module, the control module is electrically connected with the protection module and the repair module, the power module is electrically connected with the monitoring module, the control module and the repair module respectively, the repair module comprises a conduction assembly and a voltage monitoring assembly, and the conduction assembly is electrically connected with the voltage monitoring assembly.
2. The protection circuit board for detecting disconnection of sampling lines of a lithium battery pack according to claim 1, wherein: the collection module comprises a current collection assembly and a signal amplification assembly, one end of the current collection assembly is electrically connected with the signal amplification assembly, and the other end of the current collection assembly is electrically connected with the lithium battery.
3. The protection circuit board for detecting disconnection of sampling lines of a lithium battery pack according to claim 2, wherein: the current acquisition subassembly includes the current collector, the signal amplification subassembly includes the triode, electric connection has resistance R1, resistance R2, resistance R3, resistance R4 and resistance R5 between current collector and the triode, the one end and the one end of resistance R4 of resistance R5 are connected, the one end of resistance R5 and resistance R4 all is connected with the one end of triode, resistance R5's other end ground connection, the other end and the one end of current collector of resistance R4 are connected.
4. The protection circuit board for detecting disconnection of sampling lines of a lithium battery pack according to claim 1, wherein: the monitoring module comprises a current monitoring sensor, one end of the current monitoring sensor is electrically connected with a diode D1 and a diode D2, the diode D1 and the diode D2 are connected in parallel, and the other end of the current monitoring sensor is electrically connected with a diode D3.
5. The protection circuit board for detecting disconnection of sampling lines of a lithium battery pack according to claim 1, wherein: the control module comprises a single chip microcomputer chip and a plurality of control switches, the single chip microcomputer chip is electrically connected with the control switches respectively, and the control switches are electrically connected with the protection module, the repair module and the power module respectively.
6. The protection circuit board for detecting disconnection of sampling lines of a lithium battery pack according to claim 1, wherein: the protection module comprises a FUSE FUSE, an electric core BAT, a control IC and two MOS tubes, wherein the FUSE FUSE is electrically connected with the electric core BAT, a capacitor C1 is electrically connected between the electric core BAT and the control IC, and the two MOS tubes are respectively electrically connected with the control IC.
7. The protection circuit board for detecting disconnection of sampling lines of a lithium battery pack according to claim 1, wherein: the voltage monitoring subassembly includes two voltage monitoring wares, it includes MOS switch and control chip to switch on the subassembly, two the voltage monitoring ware is connected with the both ends that the MOS switch is connected respectively, the other end and the control chip of MOS switch are connected, control chip's one end and power module electric connection, one MOS switch and protection module electric connection, another MOS switch and monitoring module electric connection.
8. The protection circuit board for detecting disconnection of sampling lines of a lithium battery pack according to claim 1, wherein: the power module comprises a power supply assembly, a charging assembly and a charging protection assembly, the power supply assembly is electrically connected with the charging assembly, the charging assembly is electrically connected with the charging protection assembly, and the charging protection assembly is electrically connected with the power connector.
9. The protection circuit board for detecting disconnection of sampling lines of a lithium battery pack according to claim 8, wherein: the power supply assembly comprises a rechargeable lithium ion button cell, the standard voltage of the rechargeable lithium ion button cell is 3V, and the charging voltage of the rechargeable lithium ion button cell is 2.8-3.3V.
10. The protection circuit board for detecting disconnection of a sampling line of a lithium battery pack according to claim 9, wherein: the charging protection assembly comprises a charging protection IC and a voltage converter IC, the charging assembly comprises a charging plug, the charging plug is electrically connected with the voltage converter IC, the voltage converter IC is electrically connected with the charging protection IC, and the charging protection IC is electrically connected with the rechargeable lithium ion button cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121761071.5U CN215377487U (en) | 2021-07-30 | 2021-07-30 | Protection circuit board for detecting disconnection of sampling line of lithium battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121761071.5U CN215377487U (en) | 2021-07-30 | 2021-07-30 | Protection circuit board for detecting disconnection of sampling line of lithium battery pack |
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| Publication Number | Publication Date |
|---|---|
| CN215377487U true CN215377487U (en) | 2021-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121761071.5U Active CN215377487U (en) | 2021-07-30 | 2021-07-30 | Protection circuit board for detecting disconnection of sampling line of lithium battery pack |
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| Country | Link |
|---|---|
| CN (1) | CN215377487U (en) |
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2021
- 2021-07-30 CN CN202121761071.5U patent/CN215377487U/en active Active
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