CN210468856U - Lithium battery protection circuit - Google Patents
Lithium battery protection circuit Download PDFInfo
- Publication number
- CN210468856U CN210468856U CN201921674754.XU CN201921674754U CN210468856U CN 210468856 U CN210468856 U CN 210468856U CN 201921674754 U CN201921674754 U CN 201921674754U CN 210468856 U CN210468856 U CN 210468856U
- Authority
- CN
- China
- Prior art keywords
- module
- signal
- lithium battery
- pin
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a lithium battery protection circuit belongs to lithium battery powered technology field, has solved circuit safety problem, and its technical scheme main points are including charging connecting terminal, anti-interference protection module, signal acquisition module, treater, signal display module and signal transmission module, charging connecting terminal has anodal pin, negative pole pin and ground connection pin, anti-interference protection module connects on charging connecting terminal, signal acquisition module connects on anodal pin and gathers voltage, electric current, temperature signal, and signal acquisition module and treater link to each other the transmission signal, and signal display module and treater link to each other and are used for the display data, and signal transmission module and treater link to each other and are used for sending data, have reached and have fed back data, utilize bluetooth module to realize data transmission's effect.
Description
Technical Field
The utility model relates to a lithium battery powered field relates to a lithium battery protection circuit especially.
Background
The charging process of the lithium battery is generally monitored, data acquisition is mainly carried out on the charging process, and the acquired data comprise charging current, charging voltage and charging temperature. The existing lithium battery protection circuit is intelligent in signal acquisition and cannot feed back to a user visually, so that a space capable of being perfected exists in the aspect of user use.
Based on the structure of the existing lithium battery charging protection circuit, it is also found that most lithium battery charging is operated in some normal environments, and the resistance and compatibility for some extreme environments are weak. Because the lithium battery protection circuit in the general environment is more perfect, the charging current signal, the voltage signal and the temperature signal can be processed through the single chip microcomputer, and data can be transmitted and presented through the communication module and the display module. However, in the extreme environment described above, once it occurs, it is easy to cause a circuit failure.
It has been found that the supply voltage is not stable in the lightning environment, which can easily lead to charging failures.
SUMMERY OF THE UTILITY MODEL
The present invention aims at solving at least one of the technical problems in the related art to a certain extent. In view of this, the utility model aims to provide a lithium battery protection circuit has the advantage to thunder and lightning environmental adaptation, can gather and feed back power supply data.
In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides a lithium battery protection circuit, is including charging connecting terminal, anti-interference protection module, signal acquisition module, treater, signal display module and signal transmission module, charging connecting terminal has anodal pin, negative pole pin and ground connection pin, anti-interference protection module connects on charging connecting terminal, signal acquisition module connects on anodal pin and gathers voltage, electric current, temperature signal, and signal acquisition module and treater link to each other the transmission signal, and signal display module and treater link to each other and are used for the display data, and signal transmission module and treater link to each other and are used for sending data.
As a specific aspect of the present invention, it may be preferable that: the anti-interference protection module comprises inductors L1, L2, piezoresistors RV1 and RV2, wherein the inductor L1 is connected in series on an anode pin output line, the inductor L2 is connected in series on a cathode pin output line, and the piezoresistor RV1 and the piezoresistor RV2 are connected in series and then connected to first ends of the inductor L1 and the inductor L2.
As a specific aspect of the present invention, it may be preferable that: the anti-interference protection module further comprises a power generation tube, and a connection point between the piezoresistor RV1 and the piezoresistor RV2 is also connected with a grounding pin through a discharge tube.
As a specific aspect of the present invention, it may be preferable that: the anti-interference protection module further comprises a filter circuit and a refrigeration piece, one end of the filter circuit is connected with the first end of the discharge tube, the other end of the filter circuit is connected with the refrigeration piece in series, and the other end of the refrigeration piece is connected with the grounding pin.
As a specific aspect of the present invention, it may be preferable that: the filter circuit comprises a filter resistor and a filter capacitor, and the filter resistor is connected with the filter capacitor in parallel.
As a specific aspect of the present invention, it may be preferable that: the signal transmission module is a Bluetooth module.
The utility model discloses technical effect mainly embodies in following aspect: the in-process that charging connection terminal connects external power source to charge the lithium cell, this circuit can carry out circuit protection under the thunder and lightning environment, can gather multiple signal simultaneously and carry out transmission and feedback, lets the more audio-visual circuit operation conditions of knowing of user.
Drawings
FIG. 1 is a circuit diagram of an embodiment, showing mainly an anti-tamper protection module;
fig. 2 is a circuit diagram in the embodiment, mainly showing a block diagram of a signal acquisition module.
Reference numerals: 1. a charging connection terminal; 2. an anti-interference protection module; 3. a signal acquisition module; 4. a processor; 5. a signal display module; 6. a signal transmission module; 7. a filter circuit; 8. a refrigeration sheet.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention so that the technical solution of the present invention can be more easily understood and grasped, and should not be construed as limiting the present invention.
Example (b):
referring to fig. 1, a lithium battery protection circuit includes a charging connection terminal 1, an anti-interference protection module 2, a signal acquisition module 3, a processor 4, a signal display module 5, and a signal transmission module 6. The charge connection terminal 1 has a positive electrode pin, a negative electrode pin, and a ground pin. The anti-interference protection module 2 is connected to the charging connection terminal 1. The anti-interference protection module 2 comprises inductors L1, L2, piezoresistors RV1 and RV2, wherein the inductor L1 is connected in series on an anode pin output line, the inductor L2 is connected in series on a cathode pin output line, and the piezoresistor RV1 and the piezoresistor RV2 are connected in series and then connected to first ends of the inductor L1 and the inductor L2. And the second ends of the inductor L1 and the inductor L2 are used as connecting ends for connecting the lithium battery.
The anti-interference protection module 2 further comprises a power generation tube G, and a connection point between the piezoresistor RV1 and the piezoresistor RV2 is also connected with a grounding pin through a discharge tube.
The anti-interference protection module 2 further comprises a filter circuit 7 and a refrigerating piece 8, one end of the filter circuit 7 is connected with the first end of the discharge tube, the other end of the filter circuit 7 is connected with the refrigerating piece 8 in series, and the other end of the refrigerating piece 8 is connected with the grounding pin.
The filter circuit 7 comprises a filter resistor R and a filter capacitor C, and the filter resistor R and the filter capacitor C are connected in parallel.
It can be known from the above that when the power supply is turned on, the voltage dependent resistors RV1 and RV2 are not conducted because the power supply is normal, the current passes through the inductors L1 and L2, so as to effectively suppress the common mode component, and then output, when a strong magnetic field exists outside or the common mode interference exists, especially in an environment where lightning exists, a circuit can induce a large common mode component due to the influence of lightning, at this time, the voltage can suddenly rise, so that the voltage dependent resistors RV1 and RV2 are conducted, so that the voltage on the discharge tube G reaches the turn-on voltage, so that a large current can flow through the voltage dependent resistors RV1, RV2, and G to reach the ground pin, at this time, a part of the current is shared by the cooling plate 8, so that the cooling plate 8 starts to operate, the temperature of the PCB circuit board is reduced, and the internal current of the anti-interference protection module 2 is reduced because the cooling plate is in a shunt manner, therefore, heating can be reduced, and meanwhile, the temperature of the whole PCB substrate is reduced in the refrigerating process, so that the working temperature cannot rise excessively.
The discharge tube G adopts 2RP 600L-8; the model of the inductors L1 and L2 is L7-7, and the circuit adopting the model has better adaptability and longer service life. Those skilled in the art should know that the core of the scheme lies in the connection structure of the components, and the parameters of the components are not the key point for protection of the scheme.
The circuit is mounted on a PCB circuit board.
Referring to fig. 1 and 2, the signal acquisition module 3 is connected to the positive pin and acquires voltage, current and temperature signals, the signal acquisition module 3 is connected to the processor 4 to transmit signals, the signal display module 5 is connected to the processor 4 to display data, and the signal transmission module 6 is connected to the processor 4 to transmit data.
The signal acquisition module 3 comprises a temperature sensor, a voltage sensor and a current sensor, and the devices are common devices in the market, so that the devices are adopted for data acquisition and data information transmission. The processor 4 may use a DSP2812 chip to process the signal data. The signal display module 5 is a liquid crystal display, the signal transmission module 6 is a Bluetooth module, and the Bluetooth module can connect external Bluetooth equipment and transmit data through a Bluetooth communication protocol.
Of course, the above is only a typical example of the present invention, and besides, the present invention can also have other various specific embodiments, and all technical solutions adopting equivalent replacement or equivalent transformation are all within the scope of the present invention as claimed.
Claims (6)
1. The utility model provides a lithium battery protection circuit, is including connecting terminal, anti-interference protection module, signal acquisition module, treater, signal display module and the signal transmission module of charging, characterized by, the connecting terminal that charges has anodal pin, negative pole pin and ground connection pin, anti-interference protection module connects on the connecting terminal that charges, signal acquisition module connects on anodal pin and gathers voltage, electric current, temperature signal, and signal acquisition module and treater link to each other the transmission signal, and signal display module and treater link to each other and are used for the display data, and signal transmission module and treater link to each other and are used for sending data.
2. The lithium battery protection circuit as claimed in claim 1, wherein the anti-interference protection module comprises inductors L1, L2, and voltage dependent resistors RV1 and RV2, wherein the inductor L1 is connected in series to the positive terminal output line, the inductor L2 is connected in series to the negative terminal output line, and the voltage dependent resistor RV1 and the voltage dependent resistor RV2 are connected in series and then connected to the first ends of the inductor L1 and the inductor L2.
3. The lithium battery protection circuit as claimed in claim 2, wherein the anti-interference protection module further comprises a power generation tube, and the connection point between the piezoresistor RV1 and the piezoresistor RV2 is further connected to a grounding pin through a discharge tube.
4. The protection circuit for the lithium battery as claimed in claim 3, wherein the anti-interference protection module further comprises a filter circuit and a refrigeration piece, one end of the filter circuit is connected with the first end of the discharge tube, the other end of the filter circuit is connected with the refrigeration piece in series, and the other end of the refrigeration piece is connected with the grounding pin.
5. The lithium battery protection circuit as claimed in claim 4, wherein the filter circuit comprises a filter resistor and a filter capacitor, and the filter resistor and the filter capacitor are connected in parallel.
6. The lithium battery protection circuit of claim 1, wherein the signal transmission module is a bluetooth module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921674754.XU CN210468856U (en) | 2019-10-08 | 2019-10-08 | Lithium battery protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921674754.XU CN210468856U (en) | 2019-10-08 | 2019-10-08 | Lithium battery protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210468856U true CN210468856U (en) | 2020-05-05 |
Family
ID=70434150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921674754.XU Expired - Fee Related CN210468856U (en) | 2019-10-08 | 2019-10-08 | Lithium battery protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210468856U (en) |
-
2019
- 2019-10-08 CN CN201921674754.XU patent/CN210468856U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209462021U (en) | A kind of reverse connection preventing over-pressure safety device, earphone and USB charging unit | |
| CN101127608A (en) | Wireless network adapter over current protection method and device | |
| CN210468856U (en) | Lithium battery protection circuit | |
| CN204089806U (en) | Low-power consumption main frame MBUS receives and dispatches control circuit | |
| CN210624935U (en) | Electronic anode device and water heater | |
| CN212570011U (en) | Storage battery system fire detection device based on power line carrier communication | |
| CN114142567A (en) | Battery management circuit and battery device | |
| CN208797633U (en) | Electronic equipment charging circuit, charging equipment and charging management system | |
| CN208142902U (en) | A kind of wireless charging hearing-aid device | |
| CN208411472U (en) | Battery monitoring unit watchdog circuit | |
| CN208190301U (en) | It is a kind of that charger voltage output device is adjusted according to environment temperature | |
| CN206670859U (en) | Wireless transmitter based on BLE broadcast | |
| CN218124738U (en) | Remote data acquisition device | |
| CN211239435U (en) | Power control terminal | |
| CN211907637U (en) | Battery heating system and unmanned aerial vehicle | |
| CN218273127U (en) | External equipment state sensing device | |
| CN205407336U (en) | Electrostatic discharge carrier wave transmitting system and photovoltaic cell board monitored control system | |
| CN215681929U (en) | Remote power distribution system | |
| CN214590785U (en) | Wireless transmitting charging circuit architecture | |
| CN210867690U (en) | Wireless signal reinforcing means | |
| CN215954102U (en) | Current loop communication circuit and air conditioning unit | |
| CN220358837U (en) | Parallel operation detection circuit of battery pack, battery pack and energy storage system | |
| CN218383719U (en) | Battery state monitoring system | |
| CN209387820U (en) | A kind of buckle releaser attachment with self-diagnostic function | |
| CN113910959B (en) | Charging gun protection circuit without voltage transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200505 Termination date: 20201008 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |