CN219758454U - Simple circuit for displaying battery inclusion - Google Patents
Simple circuit for displaying battery inclusion Download PDFInfo
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- CN219758454U CN219758454U CN202222910472.3U CN202222910472U CN219758454U CN 219758454 U CN219758454 U CN 219758454U CN 202222910472 U CN202222910472 U CN 202222910472U CN 219758454 U CN219758454 U CN 219758454U
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- 230000000087 stabilizing effect Effects 0.000 claims abstract description 14
- 239000003990 capacitor Substances 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 230000005669 field effect Effects 0.000 description 3
- 239000003381 stabilizer Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model relates to a simple circuit for displaying battery inclusion, which comprises a battery protection chip U41 and a MOS tube Q11; the CO pin of the battery protection chip U41 is connected with the resistor R32 and the voltage stabilizing tube D31 and then connected to the S pole of the MOS tube Q11, the D pole of the MOS tube Q11 is connected with the positive pole of the diode D41, the negative pole of the diode D41 is connected with the positive pole of the battery pack, and the negative pole of the battery pack is grounded; the negative electrode of the diode D41 is connected with the resistor R41 and then connected to the VDD pin of the battery protection chip U41, and the G electrode of the MOS tube Q11 is connected between the resistor R32 and the voltage stabilizing tube D31; the D pole of the MOS tube Q11 is connected with the resistor R21 and the LED and then grounded. The utility model can realize the display of the battery package capacity without MCU, realizes the display of the battery package capacity by using a simple circuit, reduces the management and control of MCU production, saves the burning jig required by production, and the like.
Description
Technical Field
The utility model relates to the technical field of battery inclusion display circuits, in particular to a simple circuit for battery inclusion display.
Background
Most of the current battery packs contain MCU, which causes the problems of high cost price or material shortage. The usb pulse charge amount display and led control integrated circuit comprises an eight-pin mcu, a high-power npnmos tube, a lithium battery, a current capacity display device, an mcu one-way switch, two-way pwm output device and two-way pwm output device, wherein the mcu pulse charge amount display and led control integrated circuit is disclosed in the prior Chinese patent document CN213991090, the mcu pulse charge amount display and led control integrated circuit comprises four led indicator lamps, the current capacity is displayed, the mcu pulse charge amount display and led control integrated circuit comprises two-way pwm output devices, and the two-way pwm output devices can control the two-way high-power led lamp to work. The first pin of the mcu is connected with the voltage of the access circuit; the second pin of the mcu is grounded through a switch, the battery is further included, the positive electrode of the battery is connected with the first pin of the mcu, the negative electrode of the battery is grounded, the battery further includes a first N-channel insulated gate field effect transistor Q1, the grid electrode of the Q1 is connected with the fourth pin of the mcu, the source electrode of the Q1 is connected with the first pin of the mcu, the drain electrode of the Q1 is connected with a USB power supply of 5V through a resistor R1, two ends of the resistor R2 are respectively connected with the grid electrode and the drain electrode of the Q1, and the battery further includes a capacitor C1 which is respectively connected with two ends of the first pin and the eighth pin of the mcu; the eighth pin of mcu is grounded, the gate of the second N-channel insulated gate field effect transistor Q2 of the fifth pin of mcu, the source electrode of Q2 is grounded, the drain electrode of Q2 is connected with the output end of the fifth light emitting diode LED5, the input end of the fifth light emitting diode LED5 is grounded, the input end of the sixth light emitting diode LED6 is grounded, the drain electrode of the third N-channel insulated gate field effect transistor Q3 of the output end of the sixth light emitting diode LED6 is grounded, the source electrode of Q3 is grounded, and the gate electrode of Q2 is connected with the third pin of mcu.
In the above scheme, although some electronic components can be reduced after the MCU is adopted, the MCU chip is expensive and often has chip shortage phenomenon, which leads to the delay of the product manufacturing period. The MCU needs to carry out the steps of writing and recording, and a plurality of working procedures are added to the production line, including the recording of which a special recording jig is needed.
Disclosure of Invention
The utility model aims to solve the technical problems that: the simple circuit for displaying the battery pack capacity is provided, and the display of the battery pack capacity can be realized without an MCU.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
a simple circuit for displaying battery inclusion is applied to a battery pack and comprises a battery protection chip U41 and a MOS tube Q11;
the CO pin of the battery protection chip U41 is sequentially connected with a resistor R32 and a voltage stabilizing tube D31, and one end of the voltage stabilizing tube D3, which is far away from the connecting resistor R32, is connected with a MOS tube Q11;
the S electrode of the MOS tube Q11 is connected with the voltage stabilizing tube D3; the diode D41 is connected to the D pole of the MOS tube Q11, the positive pole of the diode D41 is connected with the D pole of the MOS tube Q11, the negative pole of the diode D41 is connected to the positive pole of the battery pack, and the negative pole of the battery pack is grounded; the cathode of the diode D41 is connected to the VDD pin of the battery protection chip U41 through a resistor R41;
the G pole of the MOS tube Q11 is connected between the resistor R32 and the voltage stabilizing tube D31; the D pole of the MOS tube Q11 is sequentially connected with a resistor R21 and a Light Emitting Diode (LED) and then grounded.
Optionally, a resistor R51, a switch S1 and a capacitor C51 are sequentially connected to the cathode of the diode D41, and one end of the capacitor C51 far from the switch S1 is grounded.
Optionally, a triode Q52 and a triode Q51 are also included;
the b pole of the triode Q52 is connected between the switch S1 and the capacitor C51 after being connected with the resistor R52, the e pole of the triode Q52 is grounded, the C pole of the triode Q52 is connected with the b pole of the triode Q51, the e pole of the triode Q51 is connected with the cathode of the diode D41, and the C pole of the triode Q51 is connected with the first section of the VDD end of the battery pack capacity display simple circuit and outputs VDD voltage.
Optionally, the device further comprises at least one electric quantity display circuit, wherein the electric quantity display circuit comprises a three-terminal adjustable parallel voltage stabilizer U1;
the second end of the VDD end is sequentially connected with a resistor R3, a light emitting diode LED1 and the three-terminal adjustable shunt regulator U1, and the three-terminal adjustable shunt regulator U1 is grounded.
Optionally, the third end of the VDD terminal is sequentially connected to the resistor R1 and the resistor R2 and then grounded.
Optionally, the electric quantity display circuit is provided with four paths.
The beneficial effects of the utility model are as follows: when the voltage of each battery is monitored to be smaller than 4.25V, the pins S to D of the MOS transistor Q11 are in a conducting state, the MOS transistor Q11 acts at the moment, the Va point voltage passes through the R21 resistor, the LED action charging instruction is lightened, and the MOS transistor Q11 acts to charge the battery through the D41 diode. The utility model can realize battery package electric quantity display without MCU, realizes battery package capacity display by using simple circuit, reduces management and control in MCU production, saves burning jigs and the like required by production, and is not influenced by MCU chip shortage.
Drawings
Fig. 1 is a schematic circuit diagram of a battery pack of the present utility model showing a simple circuit.
Detailed Description
The utility model will now be described in further detail with reference to the drawings and a preferred embodiment. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only the structures which are relevant to the utility model.
As shown in fig. 1, a simple circuit for displaying battery pack content comprises a battery protection chip U41 and a MOS transistor Q11;
the CO pin of the battery protection chip U41 is sequentially connected with a resistor R32 and a voltage stabilizing tube D31, and one end of the voltage stabilizing tube D3, which is far away from the connecting resistor R32, is connected with a MOS tube Q11;
the S electrode of the MOS tube Q11 is connected with the voltage stabilizing tube D3; the diode D41 is connected to the D pole of the MOS tube Q11, the positive pole of the diode D41 is connected with the D pole of the MOS tube Q11, the negative pole of the diode D41 is connected to the positive pole of the battery pack, and the negative pole of the battery pack is grounded; the cathode of the diode D41 is connected to the VDD pin of the battery protection chip U41 through the resistor R41;
the G pole of the MOS tube Q11 is connected between the resistor R32 and the voltage stabilizing tube D31;
the D pole of the MOS tube Q11 is sequentially connected with a resistor R21 and a Light Emitting Diode (LED) and then grounded.
The output of the U41 is in an Open-drainoutput action mode, the VDD pin of the U41 is powered by a battery end, when the voltage of each battery is monitored to be smaller than 4.25V, the CO pin of the U41 is in a low potential, the voltage Vgs (the voltage between the G pin and the S pin) of the MOS tube Q11 is lower than a driving threshold, the S pin and the D pin of the MOS tube Q11 are in a conducting state, at the moment, the MOS tube Q11 acts, the Va point voltage passes through an R21 resistor, the LED action charging indication is lightened, and the MOS tube Q11 acts to charge the battery through a D41 diode.
After one battery is larger than 4.25V, the CO pin of the U41 is changed from low potential to high potential, the MOS tube Q11 does not act, the S pin to the D pin of the MOS tube Q11 are in an off state, and the LED is not lightened. D41 is an effect of preventing leakage of the battery pack, and if the input charging port is short-circuited, it is possible to prevent the battery from being burned out by generating a large current.
In this embodiment, the cathode of the diode D41 is sequentially connected to the resistor R51, the switch S1, and the capacitor C51, and one end of the capacitor C51 far from the switch S1 is grounded.
Further, the simple circuit for displaying the battery inclusion amount also comprises a triode Q52 and a triode Q51;
the b pole of the triode Q52 is connected with the resistor R52 and then is connected between the switch S1 and the capacitor C51, the e pole of the triode Q52 is grounded, the C pole of the triode Q52 is connected with the b pole of the triode Q51, the e pole of the triode Q51 is connected with the cathode of the diode D41, and the C pole of the triode Q51 is connected with the first section of the VDD end of the battery pack capacity display simple circuit and outputs VDD voltage.
Further, the battery inclusion amount display simple circuit also comprises at least one electric quantity display circuit, and the electric quantity display circuit comprises a three-terminal adjustable parallel voltage stabilizer U1;
the second end of the VDD end is sequentially connected with a resistor R3, a light emitting diode LED1 and a three-terminal adjustable shunt regulator U1, the three-terminal adjustable shunt regulator U1 is grounded, and the third end of the VDD end is sequentially connected with the resistor R1 and the resistor R2 and then grounded.
The electric quantity display function is as follows:
when the battery pack has more capacity, the switch S1 can be pressed to display the LED1, the LED2, the LED3 and the LED4 corresponding to the battery pack capacity, when the switch S1 is pressed, the battery voltage charges the capacitor C51 through the resistor R51, meanwhile, the voltage can flow through the resistor R52, the current flowing through the resistor R52 can lead the triode Q52 to have the driving Ib current, the pin C to the pin E of the triode Q52 are conducted, the triode Q52 can lead the triode Q51 to act, the triode Q51 acts, the battery can provide the voltage to the Vdd point, the Vdd voltage is similar to the battery voltage,
the voltage of the REF pin of the U1 is divided by the resistor R1 and the resistor R2, when the divided voltage is more than 2.5V, the CATHODE pin of the U1 becomes low potential, the LED1 can flow current and emit light to display, and when the divided voltage is less than 2.5V, the LED1 can not emit light to display.
Similarly, the voltage of the REF pin of U2 is divided by the resistor R4 and the resistor R5. The voltage at the REF pin of U3 is divided by resistor R7 and resistor R8. The voltage at the REF pin of U4 is divided by resistor R10 and resistor R11. Therefore, the voltage division point of each path of the electric quantity display circuit is set, and the battery capacity corresponding to the battery pack can be set. The U1, U2, U3, and U4 operations are 25%, 50%, 75%, and 100% of the display capacities corresponding to the LEDs 1, 2, 3, and 4, respectively.
The simple circuit is utilized to realize battery inclusion display, reduce management and control in MCU production, save the burning jig and the like required by production, keep the original action function and are not influenced by the shortage of MCU chips.
The foregoing description is merely illustrative of specific embodiments of the utility model, and the utility model is not limited to the details shown, since modifications and variations of the foregoing embodiments may be made by those skilled in the art without departing from the spirit and scope of the utility model.
Claims (6)
1. A simple circuit for displaying battery inclusion is applied to a battery pack and is characterized by comprising a battery protection chip U41 and a MOS tube Q11;
the CO pin of the battery protection chip U41 is sequentially connected with a resistor R32 and a voltage stabilizing tube D31, and one end of the voltage stabilizing tube D3, which is far away from the connecting resistor R32, is connected with a MOS tube Q11;
the S electrode of the MOS tube Q11 is connected with the voltage stabilizing tube D3; the diode D41 is connected to the D pole of the MOS tube Q11, the positive pole of the diode D41 is connected with the D pole of the MOS tube Q11, the negative pole of the diode D41 is connected to the positive pole of the battery pack, and the negative pole of the battery pack is grounded; the cathode of the diode D41 is connected to the VDD pin of the battery protection chip U41 through a resistor R41;
the G pole of the MOS tube Q11 is connected between the resistor R32 and the voltage stabilizing tube D31;
the D pole of the MOS tube Q11 is sequentially connected with a resistor R21 and a Light Emitting Diode (LED) and then grounded.
2. The battery pack capacity display simple circuit according to claim 1, wherein a resistor R51, a switch S1 and a capacitor C51 are sequentially connected to the cathode of the diode D41, and one end of the capacitor C51 far from the switch S1 is grounded.
3. The battery pack display simple circuit according to claim 2, further comprising a transistor Q52 and a transistor Q51;
the b pole of the triode Q52 is connected between the switch S1 and the capacitor C51 after being connected with the resistor R52, the e pole of the triode Q52 is grounded, the C pole of the triode Q52 is connected with the b pole of the triode Q51, the e pole of the triode Q51 is connected with the cathode of the diode D41, and the C pole of the triode Q51 is connected with the first section of the VDD end of the battery pack capacity display simple circuit and outputs VDD voltage.
4. The battery pack capacity display simple circuit according to claim 3, further comprising at least one electric quantity display circuit, wherein the electric quantity display circuit comprises a three-terminal adjustable shunt regulator U1; the second end of the VDD end is sequentially connected with a resistor R3, a light emitting diode LED1 and the three-terminal adjustable shunt regulator U1, and the three-terminal adjustable shunt regulator U1 is grounded.
5. The battery pack capacity display simple circuit according to claim 4, wherein a third terminal of the VDD terminal is connected to a resistor R1 and a resistor R2 in sequence and then grounded.
6. The battery pack capacity display simple circuit according to claim 5, wherein the electric quantity display circuit is provided with four paths.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222910472.3U CN219758454U (en) | 2022-11-02 | 2022-11-02 | Simple circuit for displaying battery inclusion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222910472.3U CN219758454U (en) | 2022-11-02 | 2022-11-02 | Simple circuit for displaying battery inclusion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219758454U true CN219758454U (en) | 2023-09-26 |
Family
ID=88089921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222910472.3U Active CN219758454U (en) | 2022-11-02 | 2022-11-02 | Simple circuit for displaying battery inclusion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219758454U (en) |
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2022
- 2022-11-02 CN CN202222910472.3U patent/CN219758454U/en active Active
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