CN209375170U - The charger of anti-charge contact sparking and anti-battery reversal connection leakage-current alarm - Google Patents
The charger of anti-charge contact sparking and anti-battery reversal connection leakage-current alarm Download PDFInfo
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- CN209375170U CN209375170U CN201822245095.XU CN201822245095U CN209375170U CN 209375170 U CN209375170 U CN 209375170U CN 201822245095 U CN201822245095 U CN 201822245095U CN 209375170 U CN209375170 U CN 209375170U
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- 238000001514 detection method Methods 0.000 claims abstract description 58
- 239000004065 semiconductor Substances 0.000 claims description 49
- 210000001699 lower leg Anatomy 0.000 claims description 5
- 230000003321 amplification Effects 0.000 claims 1
- 238000003199 nucleic acid amplification method Methods 0.000 claims 1
- 230000005611 electricity Effects 0.000 description 7
- 239000000446 fuel Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Abstract
The utility model discloses the charger of a kind of anti-charge contact sparking and anti-battery reversal connection leakage-current alarm, comprising: AC-DC constant-current supply unit, battery and it is connected to the AC-DC constant-current supply unit, between battery and for controlling charge switch and reverse leakage protection location that whether AC-DC constant-current supply unit charges to the battery, the MCU control unit being connect with the charge switch and reverse leakage protection location, for detecting the cell voltage detection unit of cell voltage, the reversal connection voltage detection unit whether being reversely connected for detecting battery, for detecting the charging current detection unit of charging current, the cell voltage detection unit, charging current detection unit, reversal connection voltage detection unit is all connected with the MCU control unit, and the MCU control unit is also connected with alarm unit.With the anti-sparking of battery terminal contact when the utility model charges, and have the function of that battery is reversely connected anti-leak and battery reverse-connection alarm function.
Description
Technical field:
The utility model relates to technical field of charger products, refer in particular to a kind of anti-charge contact sparking and the reversal connection leakage of anti-battery
The charger of electric alarm.
Background technique:
Charger is a kind of with the device to charge to various electronic products, is widely used, becomes electronic product
Essential component.
Current charger is easy to produce spark when connecting with battery terminal, is not suitable for the charging of the special occasions such as fuel,
Otherwise it charges by force, is easy to cause safety accident.In addition, traditional charger is when charging to battery, since battery connects
Police instruction is added inverse time there are big reverse leakage current, battery power shortage is be easy to cause to damage, and when cell voltage is lower
Reversal connection cannot alarm, and it is not convenient enough to use.
In view of this, the present inventor proposes following technical scheme.
Utility model content:
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of anti-charge contact sparking and anti-battery
It is reversely connected the charger of leakage-current alarm.
In order to solve the above-mentioned technical problem, the utility model uses following technical proposals: anti-charge contact sparking and
The charger of anti-battery reversal connection leakage-current alarm includes: AC-DC constant-current supply unit, battery and is connected to the AC-DC Constant Electric Current
Between source unit, battery and for controlling charge switch that whether AC-DC constant-current supply unit charges to the battery and anti-
To residual current protective unit, the MCU control unit being connect with the charge switch and reverse leakage protection location, for detecting battery electricity
The cell voltage detection unit of pressure, for detecting reversal connection voltage detection unit that whether battery be reversely connected, for detecting charging current
Charging current detection unit, the cell voltage detection unit, charging current detection unit, reversal connection voltage detection unit be all connected with
The MCU control unit, and the MCU control unit is also connected with alarm unit.
Furthermore, in above-mentioned technical proposal, the charge switch and reverse leakage protection location include mutually to interconnect
The metal-oxide-semiconductor Q3 and metal-oxide-semiconductor Q4 that connect and the metal-oxide-semiconductor Q8 being connect with the pole G of the pole G of metal-oxide-semiconductor Q3 and metal-oxide-semiconductor Q4, metal-oxide-semiconductor Q3's
The pole S is connected with the pole S of metal-oxide-semiconductor Q4, and the pole D of metal-oxide-semiconductor Q4 connects the battery, and the pole D of metal-oxide-semiconductor Q3 connects the AC-DC
Constant-current supply unit, the pole S of metal-oxide-semiconductor Q8 connects battery cathode, and the pole G of metal-oxide-semiconductor Q8 connects the MCU control unit.
Furthermore, in above-mentioned technical proposal, the model of the metal-oxide-semiconductor Q3 and metal-oxide-semiconductor Q4 are AOD413A.
Furthermore, in above-mentioned technical proposal, the cell voltage detection unit includes to be connected in parallel in the battery
Resistance R35, metal-oxide-semiconductor Q9, the resistance R36 at both ends, wherein the pole D and the pole S of metal-oxide-semiconductor Q9 is separately connected resistance R35 and resistance
R36, the pole G of metal-oxide-semiconductor Q9 connect the control chip of the MCU in the MCU control unit.
Furthermore, in above-mentioned technical proposal, the charging current detection unit includes difference amplifier U4, connects
The electricity for being connected to the resistance R51 between the first foot of difference amplifier U4 and crus secunda, being connected to the difference amplifier the first foot of U4
Resistance R52 and resistance R32, the resistance R49 for being connected to difference amplifier U4 third foot, resistance R49 connect battery cathode, the resistance
R32 connects the control chip of the MCU in the MCU control unit, is grounded after difference amplifier U4 crus secunda connection resistance R50.
Furthermore, in above-mentioned technical proposal, the reversal connection voltage detection unit includes the diode connected with this
D22, resistance R66 and resistance R64, the anode of the cathode connection battery of diode D22.
Furthermore, in above-mentioned technical proposal, the MCU control unit includes MCU control chip, MCU control
Chip connects the cell voltage detection unit, charging current detection unit, reversal connection voltage detection unit, which controls chip
Model HT5070.
Furthermore, in above-mentioned technical proposal, the alarm unit includes at least one LED, the LED connection institute
State the MCU control chip in MCU control unit.
After adopting the above technical scheme, the utility model have the following beneficial effects: compared with prior art it is practical
When Novel work, when charger contact battery terminal, MCU control unit detects electric current, such as MCU by charging current detection unit
Control unit does not detect that charging current detection unit has electric current, begins through cell voltage detection unit detection cell voltage
And judge voltage, by ten detection voltages, if ten equal test voltages of voltage are normal, MCU control unit control charging is opened
It closes and reverse leakage protection location is begun to turn on, AC-DC constant-current supply unit starts to charge to battery.If MCU control unit
Detect that charging current detection unit has electric current, MCU control unit controls charge switch and the shutdown of reverse leakage protection location, then
It does not charge to battery, anti-charge contact sparking function is reached with this, connect and hold between charger and battery when charging can be solved
It is also easy to produce spark, the inflammable thing such as the gasoline that ignites are not suitable for the problem of special occasions such as fuel charge.When battery is reversed, charge switch
And the reverse-biased cut-off of reverse leakage protection location, battery will not generate back discharge, reach battery reversal connection anti-leak function, in addition lead to
Cell voltage is crossed by reversal connection voltage detection unit, and sends a signal to MCU control unit, i.e., is connect to MCU control unit for anti-
Connect voltage, MCU control unit control alarm unit is alarmed, and reaches battery reverse-connection alarm function, and this circuit is extremely low puts
Electric current versus cell influences minimum.
Detailed description of the invention:
Fig. 1 is the block diagram of the utility model；
Fig. 2 is the circuit diagram of the utility model.
Specific embodiment:
The present invention will be further described with attached drawing combined with specific embodiments below.
As shown in FIGS. 1 and 2 being reversely connected the charger of leakage-current alarm for a kind of anti-charge contact sparking and anti-battery comprising:
It AC-DC constant-current supply unit 1, battery 2 and is connected between the AC-DC constant-current supply unit 1, battery 2 and for controlling AC-
Charge switch and reverse leakage protection location 3 that whether DC constant-current supply unit 1 charges to the battery 2 are opened with the charging
Close and reverse leakage protection location 3 connect MCU control unit 4, the cell voltage detection unit 5 for detecting cell voltage,
For detecting reversal connection voltage detection unit 6, the charging current detection unit 7 for detecting charging current whether battery 2 is reversely connected,
It is single that the cell voltage detection unit 5, charging current detection unit 7, reversal connection voltage detection unit 6 are all connected with the MCU control
Member 4, and the MCU control unit 4 is also connected with alarm unit 8.When utility model works, when charger contact battery terminal,
MCU control unit 4 detects electric current by charging current detection unit 7, as MCU control unit 4 does not detect that charging current is examined
Surveying unit 7 has electric current, begins through cell voltage detection unit 5 and detects cell voltage and judge voltage, by ten detections electricity
Pressure, if ten equal test voltages of voltage are normal, MCU control unit 4 controls charge switch and reverse leakage protection location 3 is opened
Begin to be connected, AC-DC constant-current supply unit 1 starts to charge to battery.If MCU control unit 4 detects charging current, detection is single
Member 7 has electric current, and MCU control unit 4 controls charge switch and reverse leakage protection location 3 turns off, then does not charge to battery, with
This reaches anti-charge contact sparking function, and connection is easy to produce spark between charger and battery when charging can be solved, and ignites
The inflammable thing such as gasoline are not suitable for the problem of special occasions such as fuel charging.When battery is reversed, charge switch and reverse leakage protection
The reverse-biased cut-off of unit 3, battery will not generate back discharge, reach battery reversal connection anti-leak function, pass through additionally by cell voltage
Reversal connection voltage detection unit 6 is crossed, and sends a signal to MCU control unit 4, i.e., is connect to MCU control unit 4 for being reversely connected voltage, MCU
Control unit 4 controls alarm unit and alarms, and reaches battery reverse-connection alarm function, and the extremely low discharge current of this circuit is to electricity
Pond influences minimum.
The charge switch and reverse leakage protection location 3 include metal-oxide-semiconductor Q3 and metal-oxide-semiconductor Q4 interconnected and
The metal-oxide-semiconductor Q8 connecting with the pole G of the pole G of metal-oxide-semiconductor Q3 and metal-oxide-semiconductor Q4, the pole S of metal-oxide-semiconductor Q3 are connected with the pole S of metal-oxide-semiconductor Q4,
The pole D of metal-oxide-semiconductor Q4 connects the battery 2, and the pole D of metal-oxide-semiconductor Q3 connects the AC-DC constant-current supply unit 1, the metal-oxide-semiconductor
The pole S of Q8 connects 2 cathode of battery, and the pole G of metal-oxide-semiconductor Q8 connects the MCU control unit 4.The metal-oxide-semiconductor Q3's and metal-oxide-semiconductor Q4
Model is AOD413A.The turn-on and turn-off of metal-oxide-semiconductor Q3, metal-oxide-semiconductor Q4 and metal-oxide-semiconductor Q8 realize entire charge switch and reversed leakage
The turn-on and turn-off of electric protection unit 3, and controlled by MCU control unit 4.
The cell voltage detection unit 5 includes resistance R35, MOS pipe Q9, the electricity for being connected in parallel in 2 both ends of battery
Hinder R36, wherein the pole D and the pole S of metal-oxide-semiconductor Q9 is separately connected resistance R35 and resistance R36, the pole the G connection of metal-oxide-semiconductor Q9
MCU in the MCU control unit 4 controls chip 41.
The charging current detection unit 7 include difference amplifier U4, be connected to the first foot of difference amplifier U4 and
Resistance R51 between crus secunda, the resistance R52 and resistance R32 for being connected to the difference amplifier the first foot of U4, it is connected to the difference
The resistance R49 of amplifier U4 third foot, resistance R49 connect 2 cathode of battery, in the resistance R32 connection MCU control unit 4
MCU control chip 41, the difference amplifier U4 crus secunda connection resistance R50 after be grounded.
The reversal connection voltage detection unit 6 includes diode D22, resistance R66 and the resistance R64 connected with this, this two
The anode of the cathode connection battery 2 of pole pipe D22.
The MCU control unit 4 includes MCU control chip 41, and MCU control chip 41 connects the cell voltage inspection
Unit 5, charging current detection unit 7, reversal connection voltage detection unit 6 are surveyed, which controls the model HT5070 of chip 41.
The alarm unit 8 includes at least one LED, which connects the control of the MCU in the MCU control unit 4
Chip 41.
In conclusion, when charger contact battery terminal, MCU control unit 4 passes through charging electricity when utility model works
Stream detection unit 7 detects electric current and begins through if MCU control unit 4 does not detect that charging current detection unit 7 has electric current
Cell voltage detection unit 5 detects cell voltage and judges voltage, by ten detection voltages, if ten voltages test electricity
Positive pressure is normal, and MCU control unit 4 controls charge switch and reverse leakage protection location 3 is begun to turn on, AC-DC constant-current supply unit 1
Start to charge to battery.If MCU control unit 4 detects that charging current detection unit 7 has electric current, MCU control unit 4 is controlled
Charge switch and reverse leakage protection location 3 turn off, then do not charge to battery, reach anti-charge contact sparking function with this, i.e.,
Connection is easy to produce spark between charger and battery when can solve charging, and it is special that the inflammable thing such as the gasoline that ignites are not suitable for fuel etc.
The problem of occasion charges.When battery is reversed, charge switch and the reverse-biased cut-off of reverse leakage protection location 3, battery will not be generated instead
To electric discharge, reaches battery reversal connection anti-leak function and concurrently deliver letters additionally by cell voltage by reversal connection voltage detection unit 6
Number give MCU control unit 4, i.e., to MCU control unit 4 connect for be reversely connected voltage, MCU control unit 4 control alarm unit reported
It is alert, reach battery reverse-connection alarm function, and this circuit extremely low discharge current battery is influenced it is minimum.
It certainly, is not to limit the utility model and implement the foregoing is merely specific embodiment of the utility model
Range, all equivalent change or modifications done according to structure, feature and principle described in present utility model application the scope of the patents, should all wrap
It includes in present utility model application the scope of the patents.
Claims (8)
1. the charger of anti-charge contact sparking and anti-battery reversal connection leakage-current alarm, it is characterised in that: comprising: AC-DC constant current
It power supply unit (1), battery (2) and is connected between the AC-DC constant-current supply unit (1), battery (2) and for controlling AC-
Charge switch and reverse leakage protection location (3) that whether DC constant-current supply unit (1) charges to the battery (2), with should
Charge switch and the MCU control unit (4) of reverse leakage protection location (3) connection, the cell voltage for detecting cell voltage
Detection unit (5), for detecting reversal connection voltage detection unit (6) that whether battery (2) be reversely connected, for detecting filling for charging current
Electric current detecting unit (7), the cell voltage detection unit (5), charging current detection unit (7), reversal connection voltage detection unit
(6) it is all connected with the MCU control unit (4), and the MCU control unit (4) is also connected with alarm unit (8).
2. the charger of anti-charge contact sparking according to claim 1 and anti-battery reversal connection leakage-current alarm, feature exist
In: the charge switch and reverse leakage protection location (3) include metal-oxide-semiconductor Q3 and metal-oxide-semiconductor Q4 and and MOS interconnected
The metal-oxide-semiconductor Q8 that the pole G of pipe Q3 is connected with the pole G of metal-oxide-semiconductor Q4, the pole S of metal-oxide-semiconductor Q3 are connected with the pole S of metal-oxide-semiconductor Q4, the metal-oxide-semiconductor
The pole D of Q4 connects the battery (2), and the pole D of metal-oxide-semiconductor Q3 connects the AC-DC constant-current supply unit (1), metal-oxide-semiconductor Q8's
The pole S connects battery (2) cathode, and the pole G of metal-oxide-semiconductor Q8 connects the MCU control unit (4).
3. the charger of anti-charge contact sparking according to claim 2 and anti-battery reversal connection leakage-current alarm, feature exist
In: the model of the metal-oxide-semiconductor Q3 and metal-oxide-semiconductor Q4 is AOD413A.
4. the charger of anti-charge contact sparking according to claim 2 and anti-battery reversal connection leakage-current alarm, feature exist
In: the cell voltage detection unit (5) includes resistance R35, the metal-oxide-semiconductor Q9, resistance for being connected in parallel in battery (2) both ends
R36, wherein the pole D and the pole S of metal-oxide-semiconductor Q9 is separately connected resistance R35 and resistance R36, described in the pole the G connection of metal-oxide-semiconductor Q9
MCU in MCU control unit (4) controls chip (41).
5. the charger of anti-charge contact sparking according to claim 2 and anti-battery reversal connection leakage-current alarm, feature exist
In: the charging current detection unit (7) includes difference amplifier U4, is connected to the first foot of difference amplifier U4 and second
Resistance R51 between foot, the resistance R52 and resistance R32 for being connected to the difference amplifier the first foot of U4, it is connected to the differential amplification
The resistance R49 of device U4 third foot, resistance R49 connect battery (2) cathode, in the resistance R32 connection MCU control unit (4)
MCU control chip (41), the difference amplifier U4 crus secunda connection resistance R50 after be grounded.
6. the charger of anti-charge contact sparking according to claim 2 and anti-battery reversal connection leakage-current alarm, feature exist
In: reversal connection voltage detection unit (6) includes diode D22, resistance R66 and the resistance R64 connected with this, the diode
The anode of cathode connection battery (2) of D22.
7. the charging of anti-charge contact sparking described in -6 any one and anti-battery reversal connection leakage-current alarm according to claim 1
Device, it is characterised in that: the MCU control unit (4) includes MCU control chip (41), which controls chip (41) and connect institute
Cell voltage detection unit (5), charging current detection unit (7), reversal connection voltage detection unit (6) are stated, which controls chip
(41) model HT5070.
8. the charger of anti-charge contact sparking according to claim 7 and anti-battery reversal connection leakage-current alarm, feature exist
In: the alarm unit (8) includes at least one LED, and the MCU in the LED connection MCU control unit (4) controls core
Piece (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822245095.XU CN209375170U (en) | 2018-12-28 | 2018-12-28 | The charger of anti-charge contact sparking and anti-battery reversal connection leakage-current alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822245095.XU CN209375170U (en) | 2018-12-28 | 2018-12-28 | The charger of anti-charge contact sparking and anti-battery reversal connection leakage-current alarm |
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| Publication Number | Publication Date |
|---|---|
| CN209375170U true CN209375170U (en) | 2019-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822245095.XU Expired - Fee Related CN209375170U (en) | 2018-12-28 | 2018-12-28 | The charger of anti-charge contact sparking and anti-battery reversal connection leakage-current alarm |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552304A (en) * | 2019-10-10 | 2019-12-10 | 徐州徐工环境技术有限公司 | road sweeping vehicle line safety arrangement |
| CN113567881A (en) * | 2021-06-24 | 2021-10-29 | 宁波方太厨具有限公司 | Working method for reducing false alarm leakage fault of cleaning machine |
-
2018
- 2018-12-28 CN CN201822245095.XU patent/CN209375170U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552304A (en) * | 2019-10-10 | 2019-12-10 | 徐州徐工环境技术有限公司 | road sweeping vehicle line safety arrangement |
| CN113567881A (en) * | 2021-06-24 | 2021-10-29 | 宁波方太厨具有限公司 | Working method for reducing false alarm leakage fault of cleaning machine |
| CN113567881B (en) * | 2021-06-24 | 2022-11-11 | 宁波方太厨具有限公司 | Working method for reducing false alarm of electric leakage fault of cleaning machine |
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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: 20190910 |
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| CF01 | Termination of patent right due to non-payment of annual fee |