CN201616688U - Lead-acid storage battery discharge control circuit - Google Patents
Lead-acid storage battery discharge control circuit Download PDFInfo
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- CN201616688U CN201616688U CN201020056718XU CN201020056718U CN201616688U CN 201616688 U CN201616688 U CN 201616688U CN 201020056718X U CN201020056718X U CN 201020056718XU CN 201020056718 U CN201020056718 U CN 201020056718U CN 201616688 U CN201616688 U CN 201616688U
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- comparator
- effect transistor
- field effect
- triode
- control circuit
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Abstract
The utility model discloses a lead-acid storage battery discharge control circuit which comprises a field effect transistor, wherein the source of the field effect transistor is connected with the anode of a storage battery, the grid of the field effect transistor is electrically connected with the collector of a triode; the emitter of the triode is connected with the cathode of the storage battery, the base of the triode is connected with the output end of a comparator, the collector of the triode is respectively connected with the non-inverting end of the comparator and the source of the field effect transistor through resistors, the emitter of the triode is connected with the non-inverting input end of the comparator, the output end of the comparator is connected with the base of the triode, the non-inverting input end of the comparator is connected with the cathode of the storage battery through a resistor, and a voltage stabilizer is connected with the inverting input end of the comparator. When the electric quality of the storage battery is saturated, the triode and the field effect transistor are conducted. When the storage battery finishes discharging, the field effect transistor is cut off. When the field effect transistor is cut off, the voltage of the storage battery rises, the resistance of the resistor can be set to regulate the voltage value of the storage battery when the power supply circuit is conducted again, and the restarting situation of the post-stage circuit equipments is avoided due to the excessive rise of the storage battery voltage.
Description
Technical field
The utility model relates to battery discharge control circuit field, particularly a kind of lead acid accumulator charge/discharge control circuit.
Background technology
Existing control circuit mainly uses scm software to realize circuit control.Existing control circuit complexity, the cost height, circuit can produce electromagnetic interference, and not good general's control that can lead to errors of antijamming capability causes late-class circuit equipment to go up equipment to occur to restart phenomenon because of the cell voltage virtual height.
The utility model content
The technical problem that the utility model mainly solves provides a kind of lead acid accumulator charge/discharge control circuit, this charge/discharge control circuit can avoid disconnecting powered battery when power supply circuits are connected once more, and late-class circuit gos up to cause equipment to restart phenomenon because of the cell voltage virtual height to take place.
In order to address the above problem, the utility model provides a kind of lead acid accumulator charge/discharge control circuit, this charge/discharge control circuit comprises: the field effect transistor that source electrode is connected with anode, be provided with resistance between the grid of this field effect transistor and the source electrode, and this grid is electrically connected with the collector electrode of triode; The emitter of described triode is connected with battery cathode, its base stage is connected with the output of comparator, collector electrode is connected with the in-phase input end of comparator and the source electrode of effect pipe respectively with resistance by resistance, its emitter is connected with the comparator in-phase input end by resistance, the output of this comparator is connected with the base stage of triode, this comparator in-phase input end is connected with battery cathode by resistance, and pressurizer is connected with the comparator inverting input.
Preferably, also be provided with voltage stabilizing didoe between the collector electrode of described triode and the grid of field effect transistor, the negative electrode of this voltage stabilizing didoe is electrically connected with the grid of field effect transistor.
Preferably, be provided with the safeties of overcurrent protection between described anode and the field effect transistor.
Preferably, described safeties are protective tube or fuse.
Preferably, be provided with voltage stabilizing didoe between the output of the base stage of described triode and comparator.
Preferably, also be provided with resistance between the output of described voltage stabilizing didoe and comparator.
Preferably, pressurizer is connected with the comparator inverting input, and the comparator inverting input also is connected with the field effect transistor source electrode by resistance.
Preferably, be provided with resistance between the base stage of the output of described comparator and triode.
The utility model lead acid accumulator charge/discharge control circuit, because closing, field effect transistor Q5 has no progeny, voltage on the battery can raise at this moment, have only when cell voltage is elevated to the magnitude of voltage that sets, comparator U4A in-phase end voltage could be than reverse voltage height, and comparator U4A could export high level, triode Q10 conducting, field effect transistor Q5 conducting, circuit be level power supply backward normally.Disconnect powered battery and connect once more to power supply circuits, the magnitude of voltage in the time of can regulating power supply circuits and connect once more by the resistance of setting resistance R 55 on the battery is avoided the cell voltage virtual height, avoids late-class circuit to cause equipment to restart phenomenon because of the cell voltage rise.
Description of drawings
Fig. 1 is the utility model lead acid accumulator charge/discharge control circuit embodiment circuit diagram.
Below in conjunction with embodiment, and with reference to accompanying drawing, realization, functional characteristics and the advantage of the utility model purpose is described further.
Embodiment
As shown in Figure 1, the utility model provides a kind of lead acid accumulator charge/discharge control circuit.
Described lead acid accumulator charge/discharge control circuit comprises: the field effect transistor Q5 that source electrode is connected with anode, be provided with resistance R 38 between the grid of this field effect transistor Q5 and the source electrode, and this grid is electrically connected with the collector electrode of triode Q10; The emitter of described triode Q10 is connected with battery cathode, its base stage is connected with the output of comparator U4A, collector electrode is connected with the in-phase input end of comparator U4A and the source electrode of effect pipe Q5 respectively with resistance R 56 by resistance R 36, its emitter is connected with comparator U4A in-phase input end by resistance R 55, the output of this comparator U4A is connected with the base stage of triode Q11, this comparator U4A in-phase input end is connected with battery cathode by resistance R 37, and pressurizer U6 is connected with comparator U4A inverting input.
The course of work is as follows:
When battery electric quantity fills when full, when the pin 3 in-phase input end voltages of comparator U4A are higher than pin 2 inverting input voltages, described comparator U4A output high level, this moment triode Q10 base stage high level, triode Q10 conducting, field effect transistor Q5 conducting; Triode Q11 base stage also is a high level, triode Q11 conducting, and resistance R 55 is incorporated circuit working into, and battery is level power supply backward normally.
When cell voltage discharged into the discharge end point voltage, the pin 3 in-phase input end voltages of comparator U4A were lower than pin 2 inverting input voltages, triode Q10 base stage low level, and triode Q10 turn-offs, and field effect transistor Q5 turn-offs, and battery feed circuit disconnects, the protection battery; While triode Q11 base stage low level, triode Q11 turn-offs, and resistance R 55 is not incorporated circuit working into, and this moment, comparator U4A in-phase input end voltage reduced.The voltage that described field effect transistor Q5 closes on battery this moment of having no progeny can raise, have only when voltage is elevated to the magnitude of voltage that sets, comparator U4A in-phase end voltage could be than reverse voltage height, comparator U4A could export high level, triode Q10 conducting, field effect transistor Q5 conducting, circuit be level power supply backward normally.Disconnect powered battery and connect once more to power supply circuits, the magnitude of voltage in the time of can regulating power supply circuits and connect once more by the resistance of setting resistance R 55 on the battery is avoided the cell voltage virtual height, guarantees that late-class circuit causes equipment to restart because of the cell voltage rise.
In the present embodiment, also be provided with voltage stabilizing didoe ZD1 between the grid of the collector electrode of described triode Q10 and field effect transistor Q5, the negative electrode of this voltage stabilizing didoe ZD1 is electrically connected with the grid of field effect transistor Q5.Be provided with the safeties F1 of overcurrent protection between described anode and the field effect transistor Q5.Described safeties F1 is protective tube or fuse.Preferably, be provided with voltage stabilizing didoe ZD2 between the base stage of described triode Q10 and the comparator U4A output, also be provided with resistance R 52 between described voltage stabilizing didoe ZD2 and the comparator U4A output.Pressurizer U6 is connected with comparator U4A inverting input, is provided with resistance R 30 between the source electrode of comparator U4A inverting input and field effect transistor Q5 and is connected.Be provided with resistance R 53 between the base stage of the output of described comparator U4A and triode Q11.
The above only is a preferred embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (9)
1. lead acid accumulator charge/discharge control circuit is characterized in that:
This charge/discharge control circuit comprises the field effect transistor (Q5) that source electrode is connected with anode, is provided with resistance (R38) between grid of this field effect transistor (Q5) and the source electrode, and this grid is electrically connected with the collector electrode of triode (Q10); The emitter of described triode (Q10) is connected with battery cathode, its base stage is connected with the output of comparator (U4A), collector electrode is connected with the in-phase input end of comparator (U4A) and the source electrode of field effect transistor (Q5) respectively with resistance (R56) by resistance (R36), its emitter is connected with comparator (U4A) in-phase input end by resistance (R55), the output of this comparator (U4A) is connected with the base stage of triode (Q11), this comparator (U4A) in-phase input end is connected with battery cathode by resistance (R37), and pressurizer (U6) is connected with comparator (U4A) inverting input.
2. lead acid accumulator charge/discharge control circuit according to claim 1 is characterized in that:
Also be provided with voltage stabilizing didoe (ZD1) between the grid of the collector electrode of described triode (Q10) and field effect transistor (Q5), the negative electrode of this voltage stabilizing didoe (ZD1) is electrically connected with the grid of field effect transistor (Q5).
3. lead acid accumulator charge/discharge control circuit according to claim 1 and 2 is characterized in that:
Be provided with the safeties (F1) of overcurrent protection between described anode and the field effect transistor (Q5).
4. lead acid accumulator charge/discharge control circuit according to claim 3 is characterized in that:
Described safeties are protective tube or fuse.
5. lead acid accumulator charge/discharge control circuit according to claim 1 and 2 is characterized in that:
Be provided with voltage stabilizing didoe (ZD2) between the base stage of described triode (Q10) and comparator (U4A) output.
6. lead acid accumulator charge/discharge control circuit according to claim 5 is characterized in that:
Also be provided with resistance (R52) between described voltage stabilizing didoe (ZD2) and comparator (U4A) output.
7. lead acid accumulator charge/discharge control circuit according to claim 1 is characterized in that:
Described pressurizer (U6) is connected with comparator (U4A) inverting input, and comparator (U4A) inverting input also is connected with field effect transistor (Q5) source electrode by resistance (R30).
8. lead acid accumulator charge/discharge control circuit according to claim 1 is characterized in that:
Be provided with resistance (R53) between the base stage of the output of described comparator (U4A) and triode (Q11).
9. lead acid accumulator charge/discharge control circuit according to claim 1 is characterized in that:
Being provided with resistance (R30) between the source electrode of described comparator (U4A) inverting input and field effect transistor (Q5) is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020056718XU CN201616688U (en) | 2010-01-19 | 2010-01-19 | Lead-acid storage battery discharge control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020056718XU CN201616688U (en) | 2010-01-19 | 2010-01-19 | Lead-acid storage battery discharge control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201616688U true CN201616688U (en) | 2010-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020056718XU Expired - Fee Related CN201616688U (en) | 2010-01-19 | 2010-01-19 | Lead-acid storage battery discharge control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201616688U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218533A (en) * | 2014-10-09 | 2014-12-17 | 上海斐讯数据通信技术有限公司 | Power input overvoltage turn-off protection circuit |
| CN113978279A (en) * | 2021-11-24 | 2022-01-28 | 重庆和诚电器有限公司 | Charging port power-off system of electric motorcycle |
-
2010
- 2010-01-19 CN CN201020056718XU patent/CN201616688U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218533A (en) * | 2014-10-09 | 2014-12-17 | 上海斐讯数据通信技术有限公司 | Power input overvoltage turn-off protection circuit |
| CN113978279A (en) * | 2021-11-24 | 2022-01-28 | 重庆和诚电器有限公司 | Charging port power-off system of electric motorcycle |
| CN113978279B (en) * | 2021-11-24 | 2024-06-07 | 重庆和诚电器有限公司 | Charging port power-off system of electric motorcycle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN NALIN ELEC.TECH.CO.,LTD. Free format text: FORMER OWNER: XIE DAOPING Effective date: 20101213 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20101213 Address after: Two building, two floor, Li Langping, Li Dadao, Teng Chau Industrial Park, Buji, Longgang District, Guangdong, Shenzhen 518000 Patentee after: SHENZHEN NALIN TECHNOLOGY CO., LTD. Address before: Two building, two floor, Li Langping, Li Dadao, Teng Chau Industrial Park, Buji, Longgang District, Guangdong, Shenzhen 518000 Patentee before: Xie Daoping |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101027 Termination date: 20150119 |
|
| EXPY | Termination of patent right or utility model |