CN212659989U - Circuit of battery leak protection liquid - Google Patents
Circuit of battery leak protection liquid Download PDFInfo
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- CN212659989U CN212659989U CN202021684694.2U CN202021684694U CN212659989U CN 212659989 U CN212659989 U CN 212659989U CN 202021684694 U CN202021684694 U CN 202021684694U CN 212659989 U CN212659989 U CN 212659989U
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- circuit
- battery
- battery module
- control chip
- voltage
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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
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model provides a battery leakage-proof circuit, which is connected with an under-voltage locking device in parallel at the output end of a battery module; the undervoltage locking device supplies power to an external circuit through an output end, and when the output voltage of the battery module is lower than a threshold value, the undervoltage locking device is in an undervoltage turn-off mode to enable the battery module to stop outputting power so as to prevent the battery from being over-discharged and leaking liquid; the utility model discloses can cut off battery power output when battery voltage is low excessively to prevent the battery because of the discharge leakage that excessively to can protect electrical components effectively.
Description
Technical Field
The utility model belongs to the technical field of the direct current circuit technique and specifically relates to a circuit of battery leak protection liquid.
Background
The battery is a common power supply of a low-voltage direct-current circuit, but when the battery is over-discharged, the battery is easy to leak liquid to damage circuit devices, and how to solve the problem is a research direction.
Disclosure of Invention
The utility model provides a circuit of battery leak protection liquid can cut off battery power output when battery voltage is low excessively to prevent the battery because of the overdischarge weeping, thereby can protect electrical components effectively.
The utility model adopts the following technical scheme.
A battery leakage-proof circuit is characterized in that an under-voltage locking device is connected in parallel at the output end of a battery module; the undervoltage locking device supplies power to an external circuit through an output end, and when the output voltage of the battery module is lower than a threshold value, the undervoltage locking device is in an undervoltage turn-off mode, so that the battery module stops outputting power, and the battery is prevented from being over-discharged and leaking liquid.
The undervoltage locking device is a control chip with an undervoltage locking function; the IN pin and the grounding pin of the control chip are respectively connected with two electrodes of the battery module; and the OUT pin of the control chip is connected with the power supply access end of the external circuit, and when the output voltage of the battery module is lower than the threshold value, the output voltage of the battery module is lower than the IC starting threshold voltage of the control chip.
The OUT pin of the control chip outputs power supply to an external circuit through a diode D1; the negative end of the diode D1 is connected with the power supply access end of the external circuit.
The battery module is internally provided with a battery, an IN pin of the control chip is connected with the positive electrode of the battery, and a grounding pin is connected with the negative electrode of the battery.
The batteries in the battery module are four batteries with 1.5V output, and the four batteries are connected in series.
When the battery module stops outputting the electric power, if the voltage of the battery rises back to enable the output voltage of the battery module to be larger than the threshold value, the control chip recovers to a normal working state, and the OUT pin outputs the electric power for supplying power to the external circuit again.
The external circuit connected with the OUT pin is a secondary power supply circuit internally provided with a power storage element; and the output end of the power storage element forms a secondary power supply end.
The electric storage element includes a capacitance C2.
The secondary power supply end supplies power to the nixie tube display device.
The model of the control chip with the under-voltage locking function is SG808C 36.
The utility model discloses can cut off battery power output when battery voltage is low excessively, consequently can prevent effectively that the battery from because of the discharge leakage that excessively, and restorable power supply again when battery voltage rises, so can effectively utilize battery chemical energy, extension battery live time.
The utility model discloses the external circuit who connects is the accumulate circuit that can form the second grade power supply end, consequently can be when battery power output is cut off temporarily, maintains the power supply to outside electron device (nixie tube display) for battery power's a small margin fluctuation can not influence outside electron device's work.
Drawings
The invention will be described in further detail with reference to the following drawings and detailed description:
FIG. 1 is a schematic circuit diagram of the present invention;
in the figure: 1-a battery module; 2-a control chip; 3-a secondary power supply circuit; 4-a secondary power supply terminal; 5-an electricity storage element.
Detailed Description
As shown in fig. 1, a circuit for preventing battery leakage is provided, wherein an under-voltage locking device is connected in parallel at the output end of a battery module 1; the undervoltage locking device supplies power to an external circuit through an output end, and when the output voltage of the battery module is lower than a threshold value, the undervoltage locking device is in an undervoltage turn-off mode, so that the battery module stops outputting power, and the battery is prevented from being over-discharged and leaking liquid.
The undervoltage locking device is a control chip 2 with an undervoltage locking function; the IN pin and the grounding pin of the control chip are respectively connected with two electrodes of the battery module; and the OUT pin of the control chip is connected with the power supply access end of the external circuit, and when the output voltage of the battery module is lower than the threshold value, the output voltage of the battery module is lower than the IC starting threshold voltage of the control chip.
The OUT pin of the control chip outputs power supply to an external circuit through a diode D1; the negative end of the diode D1 is connected with the power supply access end of the external circuit.
The battery module is internally provided with a battery, an IN pin of the control chip is connected with the positive electrode of the battery, and a grounding pin is connected with the negative electrode of the battery.
The batteries in the battery module are four batteries with 1.5V output, and the four batteries are connected in series.
When the battery module stops outputting the electric power, if the voltage of the battery rises back to enable the output voltage of the battery module to be larger than the threshold value, the control chip recovers to a normal working state, and the OUT pin outputs the electric power for supplying power to the external circuit again.
The external circuit connected with the OUT pin is a secondary power supply circuit 3 internally provided with an electricity storage element 5; the output end of the power storage element forms a secondary power supply end 4.
The electric storage element includes a capacitance C2.
The secondary power supply end supplies power to the nixie tube display device.
The model of the control chip with the under-voltage locking function is SG808C 36.
Example (b):
when the battery is used for a long time, the internal chemical energy is not enough to maintain the original voltage, so that the output voltage of the battery module is lower than the IC (integrated circuit) starting threshold voltage of the control chip, the control chip is in an under-voltage turn-off mode, the battery module stops outputting electric power to the secondary power supply circuit to prevent the battery from over-discharging and liquid leakage, and the secondary power supply circuit maintains the electric power output of the secondary power supply end by the electric energy stored by the built-in capacitor.
When the power output of the battery is cut off, if the voltage of the battery rises due to internal chemical energy, and the output voltage of the battery module is larger than the IC starting threshold voltage of the control chip, the control chip recovers to a normal working state, and the OUT pin outputs power supply power to the secondary power supply circuit again.
In this example, the output voltage of the battery module is 6V, and the output voltage of the secondary power supply terminal 4 of the secondary power supply circuit is 5V.
Claims (10)
1. A circuit of battery leak protection liquid which characterized in that: the circuit is connected with an under-voltage locking device in parallel at the output end of the battery module; the undervoltage locking device supplies power to an external circuit through an output end, and when the output voltage of the battery module is lower than a threshold value, the undervoltage locking device is in an undervoltage turn-off mode, so that the battery module stops outputting power, and the battery is prevented from being over-discharged and leaking liquid.
2. The circuit of claim 1, wherein: the undervoltage locking device is a control chip with an undervoltage locking function; the IN pin and the grounding pin of the control chip are respectively connected with two electrodes of the battery module; and the OUT pin of the control chip is connected with the power supply access end of the external circuit.
3. The circuit of claim 2, wherein: the OUT pin of the control chip outputs power supply to an external circuit through a diode D1; the negative end of the diode D1 is connected with the power supply access end of the external circuit, and when the output voltage of the battery module is lower than the threshold value, the output voltage of the battery module is lower than the IC starting threshold voltage of the control chip.
4. The circuit of claim 2, wherein: the battery module is internally provided with a battery, an IN pin of the control chip is connected with the positive electrode of the battery, and a grounding pin is connected with the negative electrode of the battery.
5. The circuit of claim 4, wherein: the batteries in the battery module are four batteries with 1.5V output, and the four batteries are connected in series.
6. The circuit of claim 4, wherein: when the battery module stops outputting the electric power, if the voltage of the battery rises back to enable the output voltage of the battery module to be larger than the threshold value, the control chip recovers to a normal working state, and the OUT pin outputs the electric power for supplying power to the external circuit again.
7. The circuit of claim 6, wherein: the external circuit connected with the OUT pin is a secondary power supply circuit internally provided with a power storage element; and the output end of the power storage element forms a secondary power supply end.
8. The circuit of claim 7, wherein: the electric storage element includes a capacitance C2.
9. The circuit of claim 7, wherein: the secondary power supply end supplies power to the nixie tube display device.
10. The circuit of claim 2, wherein: the model of the control chip with the under-voltage locking function is SG808C 36.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021684694.2U CN212659989U (en) | 2020-08-13 | 2020-08-13 | Circuit of battery leak protection liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021684694.2U CN212659989U (en) | 2020-08-13 | 2020-08-13 | Circuit of battery leak protection liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212659989U true CN212659989U (en) | 2021-03-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021684694.2U Active CN212659989U (en) | 2020-08-13 | 2020-08-13 | Circuit of battery leak protection liquid |
Country Status (1)
| Country | Link |
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| CN (1) | CN212659989U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116488307A (en) * | 2023-06-20 | 2023-07-25 | 广东采日能源科技有限公司 | Low-power-consumption switching circuit of energy storage system and battery management system |
-
2020
- 2020-08-13 CN CN202021684694.2U patent/CN212659989U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116488307A (en) * | 2023-06-20 | 2023-07-25 | 广东采日能源科技有限公司 | Low-power-consumption switching circuit of energy storage system and battery management system |
| CN116488307B (en) * | 2023-06-20 | 2023-09-22 | 广东采日能源科技有限公司 | Low-power-consumption switching circuit of energy storage system and battery management system |
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