CN209803305U - Lithium battery electricity meter adopting electronic ink screen - Google Patents
Lithium battery electricity meter adopting electronic ink screen Download PDFInfo
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- CN209803305U CN209803305U CN201920530872.7U CN201920530872U CN209803305U CN 209803305 U CN209803305 U CN 209803305U CN 201920530872 U CN201920530872 U CN 201920530872U CN 209803305 U CN209803305 U CN 209803305U
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- 230000005611 electricity Effects 0.000 title claims abstract description 22
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 20
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 239000003990 capacitor Substances 0.000 claims description 64
- 239000003381 stabilizer Substances 0.000 claims description 14
- 239000000446 fuel Substances 0.000 claims description 12
- 238000003869 coulometry Methods 0.000 claims description 3
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 230000000087 stabilizing effect Effects 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 5
- 239000000523 sample Substances 0.000 description 4
- 230000010354 integration Effects 0.000 description 2
- 208000003464 asthenopia Diseases 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The utility model discloses an adopt lithium cell coulometer of electron ink screen, including master controller U3, power module, electricity measurement module, DC-DC voltage stabilizing circuit, temperature detection module, button module and electron ink screen, the input of master controller U3 is connected with electricity measurement module electricity, the output of master controller U3 is connected with electron ink screen electricity, temperature detection module is connected with master controller U3 electricity, button module is connected with master controller U3 electricity, power module provides working power supply for whole coulometer; the utility model discloses an electron ink screen provides the display effect of paper, compares in liquid crystal display, and its stand-by power consumption is low, and is long when the standby of battery can be effectively prolonged, reduces the potential safety hazard because of the overdischarge brings, effectively improves the security of product.
Description
Technical Field
The utility model relates to a display field, especially a lithium cell coulometer who adopts electron ink screen.
background
In recent years, the electronic ink screen provides a paper display effect, cannot cause damage to eyes after long-term use, is not easy to cause eye fatigue, has low power consumption and long standby time compared with a liquid crystal display screen, and particularly keeps displayed contents unchanged when the displayed contents are not updated, so that static power consumption can be almost ignored during standby, and the application range of the electronic ink screen is gradually increased.
Along with the popularization of batteries such as lithium batteries and the like, in order to accurately measure the real-time capacity of the batteries, the battery electric quantity metering is currently applied to various lithium battery application occasions, but the battery is placed for a period of time and is not used due to the fact that the electric quantity consumption is high when a common liquid crystal display screen is in a standby state, and potential safety hazards caused by overdischarge of the battery due to the standby power consumption of the liquid crystal display screen exist.
Based on this, a great deal of research and development and experiments are carried out by the technical personnel in the field, and the electronic ink screen is used for replacing the common liquid crystal display screen and achieves better effect.
Disclosure of Invention
in order to overcome the not enough of prior art, the utility model provides a low power dissipation, the high lithium cell coulometer who adopts the electron ink screen of security.
The utility model provides a technical scheme that its technical problem adopted is:
The utility model provides an adopt lithium cell coulometer of electron ink screen, includes master controller U3, power module, coulometry module, DC-DC voltage stabilizing circuit, temperature detection module, button module and electron ink screen, master controller U3's input with the ammetry module electricity is connected, master controller U3's output with electron ink screen electricity is connected, temperature detection module with master controller U3 electricity is connected, the button module with master controller U3 electricity is connected, power module provides working power supply for whole coulometer.
The electricity metering module comprises an electricity integrator U2, a light-emitting diode DS1, a resistor R2, a resistor R6, a resistor R7, a resistor R8, a resistor R11, a resistor R12, a resistor R14 and a capacitor C12; the anode of the light-emitting diode DS1 is connected with a VCC power supply, and the cathode of the light-emitting diode DS1 is connected with the 8 pins of the electric quantity integrator U2 through the resistor R6; the 5 pins of the electric quantity integrator U2 are connected with the 5 pins of the master controller U3 through the resistor R7; the 7 pins of the electric quantity integrator U2 are divided into three paths, the first path is connected with the negative electrode of a load, the second path is grounded, and the last path is connected with the negative electrode of a power supply module through the resistor R14; the pin 2 of the electric quantity integrator U2 is connected with the node of the resistor R14 and the negative pole of the power supply module; the 6 pins of the electric quantity integrator U2 are divided into two paths, one path is grounded through the resistor R12, and the other path is connected with a VCC power supply through the resistor R8; the 3 pins of the electric quantity integrator U2 are divided into two paths, one path is connected with the node of the resistor R14 and the negative electrode of the power supply module through a resistor R11, and the other path is connected with the positive electrode of the power supply module through a resistor R2; the 1 pin of the electric quantity integrator U2 is suspended; and the anode of the load is connected with the anode of the power supply module.
The DC-DC voltage stabilizing circuit comprises a voltage stabilizer U1, a resistor R0, a resistor R1, a resistor R5, a resistor R10, a capacitor C1, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, an inductor L1, a diode D1 and a diode D2; one end of the resistor R0 is connected with the anode of a power supply module, and the other end of the resistor R0 is connected with the 5 pin of the voltage regulator U1; one end of the capacitor C3 is connected with the node of the resistor R0 and the pin 5 of the voltage regulator U1, and the other end of the capacitor C3 is connected with the pin 2 of the voltage regulator U1; one end of the capacitor C4 is connected with the node of the resistor R0 and the pin 5 of the voltage regulator U1, and the other end is connected with the node of the capacitor C3 and the pin 2 of the voltage regulator U1; the pin 4 of the voltage regulator U1 is connected with the node of the resistor R0 and the pin 5 of the voltage regulator U1 through the resistor R1; the 6 pins of the voltage stabilizer U1 are divided into two paths after passing through the inductor L1, one path is output outwards to provide a VCC power supply for a circuit, and the other path is grounded through the capacitor C6; the pin 1 of the voltage regulator U1 is connected with the node of the pin 6 of the voltage regulator U1 and the inductor L1 through the capacitor C1; the 3 pins of the voltage stabilizer U1 are divided into two paths, one path is grounded, and the other path is connected with the node of the capacitor C6 and the ground through the resistor R10; one end of the resistor R5 is connected with the node between the inductor L1 and the capacitor C6, and the other end is connected with the node between the pin 3 of the voltage stabilizer U1 and the resistor R10; the anode of the diode D1 is connected to the node between the inductor L1 and the capacitor C6, and the cathode of the diode D1 is connected to the node between the pin 1 of the regulator U1 and the capacitor C1; the anode of the diode D2 is connected to the node between pin 3 of the regulator U1 and the ground, and the cathode of the diode D2 is connected to the node between pin 6 of the regulator U1 and the inductor L1; one end of the capacitor C5 is connected to the node between the inductor L1 and the capacitor C6, and the other end of the capacitor C5 is connected to the node between the capacitor C6 and ground.
And the main controller U3 is an STM series single chip microcomputer.
The utility model has the advantages that: the utility model discloses an electron ink screen provides the display effect of paper, compares in liquid crystal display, and its stand-by power consumption is low, and is long when the standby of battery can be effectively prolonged, reduces the potential safety hazard because of the overdischarge brings, effectively improves the security of product.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is a schematic block diagram of the present invention;
Fig. 2 is a schematic structural diagram of the present invention;
fig. 3 is a circuit diagram of the electricity metering module of the present invention;
FIG. 4 is a circuit diagram of a DC-DC voltage regulator circuit according to the present invention;
Fig. 5 is a circuit diagram of master controller U3 of the present invention.
Detailed Description
Referring to fig. 1 to 5, a lithium battery fuel gauge using an electronic ink screen includes a main controller U3, a power supply module 1, a power metering module 2, a DC-DC voltage stabilizing circuit, a temperature detection module 4, a key module 5, and an electronic ink screen 3, an input end of the main controller U3 is electrically connected to the power metering module 2, and an output end of the main controller U3 is electrically connected to the electronic ink screen 3, in this embodiment, the temperature detection module 4 is a temperature detection probe, the fuel gauge is provided with a temperature probe interface 6, the temperature detection probe is electrically connected to the main controller U3 through the temperature probe interface 6, and is used for detecting a temperature change condition inside the fuel gauge and feeding back information to the main controller U3, when the temperature exceeds a preset value of the main controller U3, the main controller U3 performs a high temperature early warning prompt through the electronic ink screen 3, thereby avoiding an accident, the safety of the system is effectively improved, the key module 5 is electrically connected with the main controller U3 and is used for setting the starting and stopping, the working state and the like of the fuel gauge, and the power supply module 1 provides a working power supply for the whole fuel gauge; further, in this embodiment, the master controller U3 is an STM series single chip microcomputer.
Further, in this embodiment, the electricity metering module 2 includes an electricity integrator U2, a light emitting diode DS1, a resistor R2, a resistor R6, a resistor R7, a resistor R8, a resistor R11, a resistor R12, a resistor R14, and a capacitor C12; the anode of the light-emitting diode DS1 is connected with a VCC power supply, and the cathode of the light-emitting diode DS1 is connected with the 8 pins of the electric quantity integrator U2 through the resistor R6; the 5 pins of the electric quantity integrator U2 are connected with the 5 pins of the master controller U3 through the resistor R7; the 7 pins of the electric quantity integrator U2 are divided into three paths, the first path is connected with the negative electrode of a load, the second path is grounded, and the last path is connected with the negative electrode of the power supply module 1 through the resistor R14; the pin 2 of the electric quantity integrator U2 is connected with the node of the resistor R14 and the negative pole of the power supply module; the 6 pins of the electric quantity integrator U2 are divided into two paths, one path is grounded through the resistor R12, and the other path is connected with a VCC power supply through the resistor R8; the 3 pins of the electric quantity integrator U2 are divided into two paths, one path is connected with the node of the resistor R14 and the negative pole of the power supply module 1 through a resistor R11, and the other path is connected with the positive pole of the power supply module 1 through a resistor R2; the 1 pin of the electric quantity integrator U2 is suspended; the positive electrode of the load is connected with the positive electrode of the power supply module 1; referring to fig. 2, in this embodiment, the fuel gauge is provided with a load negative electrode interface 7, a battery negative electrode interface 8 and a battery positive electrode interface 9, a negative electrode of a load is connected to the load negative electrode interface 7, a positive electrode of the load is connected to the battery positive electrode interface 9, a positive electrode of the power supply module 1 is connected to the battery positive electrode interface 9, and a negative electrode of the power supply module 1 is connected to the battery negative electrode interface 8; in this embodiment, the power supply module 1 is a lithium battery pack, the resistor R14 constitutes a current sensor, a current flows into the electric quantity integrator U2 through the load negative electrode interface 7, and flows back to the negative electrode of the lithium battery pack from the battery negative electrode interface 8, when the lithium battery pack is charged, the electric quantity integrator U2 performs forward integration, and when the lithium battery pack is discharged, the electric quantity integrator U2 performs reverse integration, and the resistors R2 and R11 constitute a voltage sensor for detecting the voltage condition of the lithium battery pack and transmitting the voltage condition to the electric quantity integrator U2.
Further, the DC-DC voltage stabilizing circuit comprises a voltage stabilizer U1, a resistor R0, a resistor R1, a resistor R5, a resistor R10, a capacitor C1, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, an inductor L1, a diode D1 and a diode D2; one end of the resistor R0 is connected with the anode of the power supply module 1, and the other end of the resistor R0 is connected with the 5 pin of the voltage regulator U1; one end of the capacitor C3 is connected with the node of the resistor R0 and the pin 5 of the voltage regulator U1, and the other end of the capacitor C3 is connected with the pin 2 of the voltage regulator U1; one end of the capacitor C4 is connected with the node of the resistor R0 and the pin 5 of the voltage regulator U1, and the other end is connected with the node of the capacitor C3 and the pin 2 of the voltage regulator U1; the pin 4 of the voltage regulator U1 is connected with the node of the resistor R0 and the pin 5 of the voltage regulator U1 through the resistor R1; the 6 pins of the voltage stabilizer U1 are divided into two paths after passing through the inductor L1, one path is output outwards to provide a VCC power supply for a circuit, and the other path is grounded through the capacitor C6; the pin 1 of the voltage regulator U1 is connected with the node of the pin 6 of the voltage regulator U1 and the inductor L1 through the capacitor C1; the 3 pins of the voltage stabilizer U1 are divided into two paths, one path is grounded, and the other path is connected with the node of the capacitor C6 and the ground through the resistor R10; one end of the resistor R5 is connected with the node between the inductor L1 and the capacitor C6, and the other end is connected with the node between the pin 3 of the voltage stabilizer U1 and the resistor R10; the anode of the diode D1 is connected to the node between the inductor L1 and the capacitor C6, and the cathode of the diode D1 is connected to the node between the pin 1 of the regulator U1 and the capacitor C1; the anode of the diode D2 is connected to the node between pin 3 of the regulator U1 and the ground, and the cathode of the diode D2 is connected to the node between pin 6 of the regulator U1 and the inductor L1; one end of the capacitor C5 is connected to the node between the inductor L1 and the capacitor C6, and the other end of the capacitor C5 is connected to the node between the capacitor C6 and ground; in this embodiment, in a start cycle of the voltage regulator U1, pin 6 of the voltage regulator U1 stores energy for the inductor L1, the capacitors C5 and C6, and simultaneously provides a VCC power supply for the entire electricity meter (in this embodiment, the VCC power supply is 5V), the output VCC voltage is divided by the resistors R5 and R10, information is fed back to the voltage regulator U1 through pin 3 of the voltage regulator U1, and when the voltage transmitted through pin 3 of the voltage regulator U1 is greater than 0.8V, the output VCC voltage is greater than 5V at this time, the voltage regulator U1 sends a control instruction, so that pin 6 of the voltage regulator U1 stops outputting; in the turn-off period of the voltage stabilizer U1, the capacitors C5 and C6 and the inductor L1 follow current through the diode D2 to supply power to the electricity meter, and until the energy stored in the capacitors C5 and C6 and the inductor L1 is released, the voltage transmitted by the pin 3 of the voltage stabilizer U1 is less than 0.8V, the pin 6 is conducted again, the circuit structure is simple, the control is convenient, and the production cost can be effectively reduced; in addition, in this embodiment, a diode D1 is connected between pin 1 of the voltage regulator U1 and the node of the inductor L1 and the capacitor C6, so that the electronic components can be prevented from being damaged in the moment of starting and turning off the voltage regulator U1, and the stability of the circuit is effectively improved.
In this embodiment, the electronic ink screen 3 is used for displaying the voltage, the current, the remaining capacity, the capacity percentage and the temperature of the power supply module, the electronic ink screen is in a standby state at ordinary times, the power consumption and the current maintain microampere levels, and the display refresh is performed only when the electricity meter is increased or decreased by 100mAH or the current is + -100 mA; meanwhile, in order to save energy, in this embodiment, the electronic ink screen 3 is set, so that the electronic ink screen 3 only partially refreshes changed data when displaying and updating, thereby further saving redundant energy loss caused by screen refreshing and prolonging the service time of the battery.
The utility model discloses an electron ink screen provides the display effect of paper, compares in liquid crystal display, and its stand-by power consumption is low, and is long when the standby of battery can be effectively prolonged, reduces the potential safety hazard because of the overdischarge brings, effectively improves the security of product.
The above embodiments do not limit the scope of the present invention, and those skilled in the art can make equivalent modifications and variations without departing from the overall concept of the present invention.
Claims (6)
1. The utility model provides an adopt lithium cell coulometer of electron ink screen which characterized in that it includes master controller U3, power module (1), coulometry module (2) and electron ink screen (3), master controller U3's input with coulometry module (2) electricity is connected, master controller U3's output with electron ink screen (3) electricity is connected, power module (1) provides working power supply for whole coulometer.
2. The lithium battery fuel gauge adopting the electronic ink screen according to claim 1, characterized in that the fuel gauge module (2) comprises a fuel integrator U2, a light emitting diode DS1, a resistor R2, a resistor R6, a resistor R7, a resistor R8, a resistor R11, a resistor R12, a resistor R14 and a capacitor C12; the anode of the light-emitting diode DS1 is connected with a VCC power supply, and the cathode of the light-emitting diode DS1 is connected with the 8 pins of the electric quantity integrator U2 through the resistor R6; the 5 pins of the electric quantity integrator U2 are connected with the 5 pins of the master controller U3 through the resistor R7; the 7 pins of the electric quantity integrator U2 are divided into three paths, the first path is connected with the negative pole of a load, the second path is grounded, and the last path is connected with the negative pole of the power supply module (1) through the resistor R14; the pin 2 of the electric quantity integrator U2 is connected with a node of the resistor R14 and the negative pole of the power supply module (1); the 6 pins of the electric quantity integrator U2 are divided into two paths, one path is grounded through the resistor R12, and the other path is connected with a VCC power supply through the resistor R8; the 3 pins of the electric quantity integrator U2 are divided into two paths, one path is connected with the node of the resistor R14 and the negative electrode of the power supply module (1) through a resistor R11, and the other path is connected with the positive electrode of the power supply module (1) through a resistor R2; the 1 pin of the electric quantity integrator U2 is suspended; the positive pole of the load is connected with the positive pole of the power supply module (1).
3. The coulometer of lithium battery adopting electronic ink screen as claimed in claim 1, further comprising a DC-DC voltage regulator circuit, wherein the DC-DC voltage regulator circuit comprises a voltage regulator U1, a resistor R0, a resistor R1, a resistor R5, a resistor R10, a capacitor C1, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, an inductor L1, a diode D1 and a diode D2; one end of the resistor R0 is connected with the anode of the power supply module (1), and the other end of the resistor R0 is connected with the 5 pin of the voltage stabilizer U1; one end of the capacitor C3 is connected with the node of the resistor R0 and the pin 5 of the voltage regulator U1, and the other end of the capacitor C3 is connected with the pin 2 of the voltage regulator U1; one end of the capacitor C4 is connected with the node of the resistor R0 and the pin 5 of the voltage regulator U1, and the other end is connected with the node of the capacitor C3 and the pin 2 of the voltage regulator U1; the pin 4 of the voltage regulator U1 is connected with the node of the resistor R0 and the pin 5 of the voltage regulator U1 through the resistor R1; the 6 pins of the voltage stabilizer U1 are divided into two paths after passing through the inductor L1, one path is output outwards to provide a VCC power supply for a circuit, and the other path is grounded through the capacitor C6; the pin 1 of the voltage regulator U1 is connected with the node of the pin 6 of the voltage regulator U1 and the inductor L1 through the capacitor C1; the 3 pins of the voltage stabilizer U1 are divided into two paths, one path is grounded, and the other path is connected with the node of the capacitor C6 and the ground through the resistor R10; one end of the resistor R5 is connected with the node between the inductor L1 and the capacitor C6, and the other end is connected with the node between the pin 3 of the voltage stabilizer U1 and the resistor R10; the anode of the diode D1 is connected to the node between the inductor L1 and the capacitor C6, and the cathode of the diode D1 is connected to the node between the pin 1 of the regulator U1 and the capacitor C1; the anode of the diode D2 is connected to the node between pin 3 of the regulator U1 and the ground, and the cathode of the diode D2 is connected to the node between pin 6 of the regulator U1 and the inductor L1; one end of the capacitor C5 is connected to the node between the inductor L1 and the capacitor C6, and the other end of the capacitor C5 is connected to the node between the capacitor C6 and ground.
4. The lithium battery fuel gauge adopting the electronic ink screen according to claim 1, characterized in that it further comprises a temperature detection module (4), wherein the temperature detection module (4) is electrically connected with the main controller U3.
5. The lithium battery fuel gauge adopting the electronic ink screen according to claim 1, further comprising a key module (5), wherein the key module (5) is electrically connected with the main controller U3.
6. The lithium battery fuel gauge adopting the electronic ink screen as claimed in claim 1, wherein the main controller U3 is an STM series single chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920530872.7U CN209803305U (en) | 2019-04-18 | 2019-04-18 | Lithium battery electricity meter adopting electronic ink screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920530872.7U CN209803305U (en) | 2019-04-18 | 2019-04-18 | Lithium battery electricity meter adopting electronic ink screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209803305U true CN209803305U (en) | 2019-12-17 |
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ID=68830104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920530872.7U Expired - Fee Related CN209803305U (en) | 2019-04-18 | 2019-04-18 | Lithium battery electricity meter adopting electronic ink screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209803305U (en) |
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2019
- 2019-04-18 CN CN201920530872.7U patent/CN209803305U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191217 |
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| CF01 | Termination of patent right due to non-payment of annual fee |