CN207251244U - A kind of multi-mode wake-up circuit of BMS - Google Patents
A kind of multi-mode wake-up circuit of BMS Download PDFInfo
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- CN207251244U CN207251244U CN201720940638.2U CN201720940638U CN207251244U CN 207251244 U CN207251244 U CN 207251244U CN 201720940638 U CN201720940638 U CN 201720940638U CN 207251244 U CN207251244 U CN 207251244U
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- 230000005611 electricity Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 230000037007 arousal Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003334 potential effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000002618 waking effect Effects 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
A kind of multi-mode wake-up circuit of BMS, including：Battery pack, switch element, power supply unit, charging wakeup unit, active wakeup unit and MCU control unit, the first input end of switch element and total positive output end of battery pack connect, and the input terminal of output terminal and power supply unit connects；The power supply output terminal of power supply unit and the power input of MCU control unit connect；The total positive output end connection for wakeup unit first input end and the battery pack of charging, the second input terminal are connected with charge power supply, the first output control terminal connection of the 3rd input terminal and MCU control unit, and the second input terminal of output terminal and switch element connects；The first input end of active wakeup unit and total positive output end of battery pack connect, and the second output control terminal of the second input terminal and MCU control unit connects, and the second input terminal of output terminal and switch element connects.The utility model possesses a variety of wake-up modes, it is therefore prevented that when one of which wake-up mode fails, can wake up BMS management systems by other wake-up modes.
Description
Technical field
BMS fields are the utility model is related to, more particularly to the multi-mode wake-up circuit of BMS a kind of.
Background technology
When work is not required in battery management system, it is necessary into holding state or off-position, lithium otherwise can be caused
Cell during discharge so can not only shorten the service life of lithium battery, also result under battery management system to state is put excessively
It is secondary normally to power on.Operating status is switched to from holding state or off-position, it is necessary to power supply wake-up circuit.At present,
Wake-up mode point automatically wakes up and wakes up two ways manually.It is general to be only equipped with a kind of wake up in traditional battery management system
Mode, otherwise (i.e. button either switchs wake-up circuit) is waken up manually or is automatically waken up and (is connected charger to automatically wake up).
If wake-up mode fails, then battery management system be able to not will be run.So battery management system needs to be equipped with a variety of wake-ups
Mode.
Utility model content
The purpose of the utility model is to overcome shortcoming of the prior art, there is provided the multi-mode of BMS a kind of wakes up electricity
Road.
The purpose of this utility model is achieved through the following technical solutions：
A kind of multi-mode wake-up circuit of BMS, including：Battery pack, switch element, power supply unit, charging wakeup unit, master
Dynamic wakeup unit and MCU control unit, the first input end of the switch element are connected with total positive output end of the battery pack,
Output terminal and the input terminal of said supply unit connect；
The power supply output terminal of said supply unit is connected with the power input of the MCU control unit；
It is described charging wakeup unit first input end be connected with total positive output end of the battery pack, the second input terminal and
Charge power supply connects, and the 3rd input terminal is connected with the first output control terminal of the MCU control unit, output terminal and the switch
The second input terminal connection of unit；
The first input end of the active wakeup unit is connected with total positive output end of the battery pack, the second input terminal with
The second output control terminal connection of the MCU control unit, output terminal are connected with the second input terminal of the switch element.
In one of the embodiments, the switch element includes first switch pipe Q1, the first diode D1, the first voltage stabilizing
Diode D2 and first resistor R1, the first diode D1 described in the drain series of the first switch pipe Q1 are single as the switch
The first input end of member, the drain electrode of the first switch pipe Q1 respectively with the cathode of the first zener diode D2 and described the
One end connection of one resistance R1, second input terminal of the grid as the switch element, source electrode are defeated as the switch element
Outlet is connected with the other end of the first resistor R1 and the anode of the first zener diode D2 respectively.
In one of the embodiments, the charging wakeup unit includes second switch pipe Q2, the 3rd switching tube Q3, the
Two resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the first capacitance C1 and the second capacitance C2,
First input ends of one end series connection second resistance R2 of the first capacitance C1 as the charging wakeup unit, the other end
Connect the 3rd resistor R3 as it is described charging wakeup unit the second input terminal, the first capacitance C1 the other end difference
It is connected with one end of the second capacitance C2 and the base stage of the second switch pipe Q2；
Outputs of collector series connection the 4th resistance R4 of the second switch pipe Q2 as the charging wakeup unit
End；
6th resistance R6 described in the base series of the 3rd switching tube Q3 is the 3rd defeated as the charging wakeup unit
Enter end, emitter ground connection, collector series connection the 5th resistance R5 is connected with the grid of the first switch pipe Q1.
In one of the embodiments, the active wakeup unit includes the 4th switching tube Q4, the 5th switching tube Q5, the
Seven resistance R7, the 8th resistance R8, the 9th resistance R9, the tenth resistance R10, the 11st resistance R11, the 12nd resistance R12, the 13rd
Resistance R13, the 3rd capacitance C3, the 4th capacitance C4, the first elastic switch SW1 and the second zener diode D3, first elasticity
Switch first input ends of one end series connection the 12nd resistance R12 of SW1 as the active wakeup unit, other end difference
It is connected with one end, one end of the tenth resistance R10 and one end of the 4th capacitance C4 of the 9th resistance R9；
The cathode of the second zener diode D3 is connected with one end of the first elastic switch SW1, plus earth；
The base stage of the 5th switching tube Q5 one end with the tenth resistance R10 and the 11st resistance R11 respectively
One end connection, emitter ground connection, second input terminal and ten three resistance of the collector as the active wakeup unit
One end connection of R13；
The other end of the 13rd resistance R13 is connected with power Vcc；
The other end of the 11st resistance R11 is connected with the emitter of the 5th switching tube Q5；
8th resistance R8 described in the base series of the 4th switching tube Q4 is another with the 12nd resistance R12 respectively
One end is connected with the other end of the 4th capacitance C4, emitter ground connection, output of the collector as the active wakeup unit
End；
One end of the 7th resistance R7 respectively with the emitter of the 4th switching tube Q4 and the 3rd capacitance C3
One end connects, and the other end is connected with the base stage of the 4th switching tube Q4 and the other end of the 3rd capacitance C3 respectively.
In one of the embodiments, the switch element further includes first switch S2 and current-limiting resistance Rs, and described first
One end of switch S2 is connected with the drain electrode of the first switch pipe Q1, and the other end series connection current-limiting resistance Rs is opened with described first
Close the source electrode connection of pipe Q1.
This technical solution has following beneficial effect compared with the prior art：
1. charging wakeup unit and active wakeup unit are set so that circuit is equipped with a variety of wake-up modes, effectively
Prevent when one of which wake-up mode fails, another wake-up mode control power supply unit output power supply electricity can also be enabled
Pressure.
2. active wakeup unit in addition to arousal function, also has the work(for closing power supply unit output supply voltage
Can, it can effectively prevent from waking up BMS management systems because of maloperation.
3. switch element is provided with emergency button circuit, it is made of, is prevented because filling first switch SW2 and current-limiting resistance Rs
When electric wakeup unit and active wakeup unit cannot work, first switch SW2 is closed, wakes up BMS management systems.
Brief description of the drawings
Fig. 1 is the multi-mode wake-up circuit structure diagram of the BMS in the present embodiment；
Fig. 2 is the multi-mode wake-up circuit principle schematic of the BMS in the present embodiment.
Embodiment
For the ease of understanding the utility model, the utility model is more fully retouched below with reference to relevant drawings
State.The better embodiment of the utility model is given in attached drawing.But the utility model can come in many different forms
Realize, however it is not limited to embodiments described herein.On the contrary, the purpose for providing these embodiments is to make to this practicality newly
The more thorough and comprehensive that the disclosure of type understands.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
For illustrative purposes only, it is unique embodiment to be not offered as " right side " and similar statement.
Unless otherwise defined, all of technologies and scientific terms used here by the article is led with belonging to the technology of the utility model
The normally understood implication of technical staff in domain is identical.It is simply in the term used in the description of the utility model herein
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein " and/or " bag
Include the arbitrary and all combination of one or more relevant Listed Items.
It is the multi-mode wake-up circuit structure diagram of BMS as shown in Figure 1, please combines in the lump with reference to Fig. 2, including：Battery
Group, switch element 100, power supply unit 200, charging wakeup unit 300, active wakeup unit 400 and MCU control unit 500, institute
State the first input end of switch element 100 to be connected with total positive output end of the battery pack, output terminal and said supply unit 200
Input terminal connection；
The power supply output terminal of said supply unit 200 is connected with the power input of the MCU control unit 500；
The first input end of the charging wakeup unit 300 is connected with total positive output end of the battery pack, the second input
End be connected with charge power supply, the 3rd input terminal is connected with the first output control terminal of the MCU control unit 500, output terminal and
The second input terminal connection of the switch element 100；
The first input end of the active wakeup unit 400 is connected with total positive output end of the battery pack, the second input
End is connected with the second output control terminal of the MCU control unit 500, the second input of output terminal and the switch element 100
End connection.
Specifically, the switch element 100 includes first switch pipe Q1, the first diode D1, the first zener diode D2
With first resistor R1, the first diode D1 is as the switch element 100 described in the drain series of the first switch pipe Q1
First input end, the drain cathode with the first zener diode D2 and first electricity respectively of the first switch pipe Q1
One end connection of R1 is hindered, second input terminal of the grid as the switch element 100, source electrode is as the switch element 100
Output terminal is connected with the other end of the first resistor R1 and the anode of the first zener diode D2 respectively.
Specifically, the charging wakeup unit 300 includes second switch pipe Q2, the 3rd switching tube Q3, second resistance R2, the
Three resistance R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the first capacitance C1 and the second capacitance C2, first electricity
Hold first input ends of one end series connection second resistance R2 of C1 as the charging wakeup unit 300, other end series connection institute
State second input terminals of the 3rd resistor R3 as the charging wakeup unit 300, the other end of the first capacitance C1 respectively with
One end of the second capacitance C2 is connected with the base stage of the second switch pipe Q2；
The collector of the second switch pipe Q2 connects the 4th resistance R4 as the charging wakeup unit 300
Output terminal；
6th resistance R6 described in the base series of the 3rd switching tube Q3 as the charging wakeup unit 300 the
Three input terminals, emitter ground connection, collector series connection the 5th resistance R5 are connected with the grid of the first switch pipe Q1.
Specifically, the active wakeup unit 400 includes the 4th switching tube Q4, the 5th switching tube Q5, the 7th resistance R7, the
Eight resistance R8, the 9th resistance R9, the tenth resistance R10, the 11st resistance R11, the 12nd resistance R12, the 13rd resistance R13,
Three capacitance C3, the 4th capacitance C4, the first elastic switch SW1 and the second zener diode D3, the first elastic switch SW1's
One end is connected the first input end of the 12nd resistance R12 as the active wakeup unit 400, the other end respectively with institute
State one end of the 9th resistance R9, one end of the tenth resistance R10 is connected with one end of the 4th capacitance C4；
The cathode of the second zener diode D3 is connected with one end of the first elastic switch SW1, plus earth；
The base stage of the 5th switching tube Q5 one end with the tenth resistance R10 and the 11st resistance R11 respectively
One end connection, emitter ground connection, collector as the active wakeup unit 400 the second input terminal with the described 13rd electricity
Hinder one end connection of R13；
The other end of the 13rd resistance R13 is connected with power Vcc；
The other end of the 11st resistance R11 is connected with the emitter of the 5th switching tube Q5；
8th resistance R8 described in the base series of the 4th switching tube Q4 is another with the 12nd resistance R12 respectively
End is connected with the other end of the 4th capacitance C4, emitter ground connection, output of the collector as the active wakeup unit 400
End；
One end of the 7th resistance R7 respectively with the emitter of the 4th switching tube Q4 and the 3rd capacitance C3
One end connects, and the other end is connected with the base stage of the 4th switching tube Q4 and the other end of the 3rd capacitance C3 respectively.
Specifically, the switch element 100 further includes first switch S2 and current-limiting resistance Rs, and the one of the first switch S2
End is connected with the drain electrode of the first switch pipe Q1, and the other end connects the current-limiting resistance Rs and first switch pipe Q1's
Source electrode connects.
Concrete operating principle：
When the second input terminal of the wakeup unit 300 that charges is connected with charge power supply (i.e. P- ports in Fig. 2), battery pack
Total positive output end (i.e. B+ in Fig. 2), second resistance R2, the first capacitance C1,3rd resistor R3 and charge power supply P- port meetings
Forming circuit, charges the first capacitance C1.When the first capacitance C1 is fully charged, second switch pipe Q2 conductings, second switch
The collector potential of pipe Q2 is pulled low so that the grid potential of first switch pipe Q1 is pulled low, first switch pipe Q1 conductings.This
When, since first switch pipe Q1 is turned on, power supply unit 200 is started to work, and supply voltage, MCU are conveyed to MCU control unit 500
Control unit 500 starts work, and the first output control terminal (i.e. IO1 ports in Fig. 2) of MCU control unit 500 persistently exports
One high level signal controls the 3rd switching tube Q3 conductings, the collector of the 3rd switching tube Q3 to the base stage of the 3rd switching tube Q3
Current potential is pulled low, and since the collector of the 3rd switch Q3 is connected with the grid of first switch pipe Q1, even if removing charge power supply, is supplied
Electric unit 200 still can convey supply voltage to MCU control unit 500.
It should be noted that in the present embodiment, power supply unit 500 is DCDC power supply units, 3rd resistor R3 and second
Capacitance C2 plays filter action, and second resistance R2, the 4th resistance R4, the 5th resistance R5 and the 6th resistance R6 are current-limiting resistance.
When the wakeup unit 300 that charges can not work normally, power supply unit can also be controlled by active wake-up circuit 400
200 convey supply voltage to MCU control unit 500.Detailed process is after pressing the first elastic switch SW2, due to the first elasticity
One end of switch SW2 is connected with the total positive output end of battery pack, promotes the 4th switching tube Q4 to turn on, and then turns on first switch pipe
Q1, power supply unit 200 externally convey supply voltage, the first output control terminal of MCU control unit 500 to MCU control unit 500
High level signal is exported to the base stage of the 3rd switching tube Q3, promotes the 3rd switching tube Q3 to turn on, by the grid of first switch pipe Q1
Current potential drags down.At this moment, even if not pressing the first elastic switch SW1 persistently, power supply unit 200 still can be to MCU control unit 500
Convey supply voltage.
It should be noted that the 12nd resistance R12 and the second zener diode D3 is used to limit battery pack to the 4th switch
The voltage of pipe Q4 conveyings is safe.
It should also be noted that, the 4th capacitance C4 is added in active wake-up circuit 400 so that only when user continues
The first elastic switch SW1 (such as 3S) for a period of time is pressed, can just promote the 4th switching tube Q4 to turn on, the 4th capacitance C4 can be very
Good prevents user because pressing the first elastic switch SW1 in unexpected very short time so as to trigger 400 work of active wakeup unit
Make.
It should also be noted that, circuit in addition to arousal function, is also equipped with closing the function of power supply unit 200.
Specifically, before the first elastic switch SW1 is not pressed, the second output control terminal (i.e. IO2 in Fig. 2) of MCU control unit 500
Power Vcc is accessed, that is, accesses high level signal, after the first elastic switch SW1 is pressed, the second output of MCU control unit 500
The current potential change from high to low level of control terminal, the first output control terminal output low level letter of MCU control unit 500
Number so that first switch pipe Q1 ends, and power supply unit 200 conveys supply voltage without normal direction MCU control unit 500.Need especially
, it is emphasized that producing conflict in order not to the function of being waken up with active, software program can be combined and set, as long as when MCU controls are single
Second output control terminal of member 500 detects continuous two jumps in potential action, and (i.e. user presses the first elasticity twice in succession
SW1 is switched, IO2 ports are changed into low level from high level twice in succession) when, it can just make it that the first of MCU control unit 500 exports
Control terminal exports low level signal, and then power supply unit 200 can not work.
It should also be noted that, switch element 100 is additionally provided with emergency button circuit, emergency button circuit is by first switch
SW2 and current-limiting resistance Rs compositions, prevent when charging wakeup unit 300 and active wakeup unit 400 all fail and need to wake up
During BMS management systems, user can also wake up BMS management systems by closing first switch SW1.
Embodiment described above only expresses the several embodiments of the utility model, its description is more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent scope.It should be pointed out that the common skill for this area
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (5)
- A kind of 1. multi-mode wake-up circuit of BMS, it is characterised in that including：Battery pack, switch element (100), power supply unit (200), charge wakeup unit (300), active wakeup unit (400) and MCU control unit (500), the switch element (100) First input end be connected with total positive output end of the battery pack, the input terminal of output terminal and said supply unit (200) connects Connect；The power supply output terminal of said supply unit (200) is connected with the power input of the MCU control unit (500)；The first input end of the charging wakeup unit (300) is connected with total positive output end of the battery pack, the second input terminal Be connected with charge power supply, the 3rd input terminal is connected with the first output control terminal of the MCU control unit (500), output terminal with The second input terminal connection of the switch element (100)；The first input end of the active wakeup unit (400) is connected with total positive output end of the battery pack, the second input terminal It is connected with the second output control terminal of the MCU control unit (500), the second of output terminal and the switch element (100) is defeated Enter end connection.
- 2. the multi-mode wake-up circuit of BMS according to claim 1, it is characterised in that the switch element (100) includes First switch pipe Q1, the first diode D1, the first zener diode D2 and first resistor R1, the drain electrode of the first switch pipe Q1 Connect first input ends of the first diode D1 as the switch element (100), the drain electrode of the first switch pipe Q1 It is connected respectively with the cathode of the first zener diode D2 and one end of the first resistor R1, grid is single as the switch Second input terminal of first (100), source electrode are another with the first resistor R1 respectively as the output terminal of the switch element (100) One end is connected with the anode of the first zener diode D2.
- 3. the multi-mode wake-up circuit of BMS according to claim 2, it is characterised in that the charging wakeup unit (300) Including second switch pipe Q2, the 3rd switching tube Q3, second resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5, The second resistance R2 connect as institute in one end of six resistance R6, the first capacitance C1 and the second capacitance C2, the first capacitance C1 The first input end of charging wakeup unit (300) is stated, the other end connects the 3rd resistor R3 as the charging wakeup unit (300) the second input terminal, the other end of the first capacitance C1 one end and described second with the second capacitance C2 respectively The base stage connection of switching tube Q2；Outputs of collector series connection the 4th resistance R4 of the second switch pipe Q2 as the charging wakeup unit (300) End；6th resistance R6 described in the base series of the 3rd switching tube Q3 is the 3rd defeated as the charging wakeup unit (300) Enter end, emitter ground connection, collector series connection the 5th resistance R5 is connected with the grid of the first switch pipe Q1.
- 4. the multi-mode wake-up circuit of BMS according to claim 3, it is characterised in that the active wakeup unit (400) Including the 4th switching tube Q4, the 5th switching tube Q5, the 7th resistance R7, the 8th resistance R8, the 9th resistance R9, the tenth resistance R10, 11 resistance R11, the 12nd resistance R12, the 13rd resistance R13, the 3rd capacitance C3, the 4th capacitance C4, the first elastic switch SW1 The 12nd resistance R12 is connected as the active with one end of the second zener diode D3, the first elastic switch SW1 The first input end of wakeup unit (400), the other end one end with the 9th resistance R9, the tenth resistance R10 respectively One end is connected with one end of the 4th capacitance C4；The cathode of the second zener diode D3 is connected with one end of the first elastic switch SW1, plus earth；The base stage of the 5th switching tube Q5 respectively with one end of the tenth resistance R10 and the 11st resistance R11 one End connection, emitter ground connection, second input terminal and ten three resistance of the collector as the active wakeup unit (400) One end connection of R13；The other end of the 13rd resistance R13 is connected with power Vcc；The other end of the 11st resistance R11 is connected with the emitter of the 5th switching tube Q5；8th resistance R8 described in the base series of the 4th switching tube Q4 respectively with the other end of the 12nd resistance R12 and The other end connection of the 4th capacitance C4, emitter ground connection, output of the collector as the active wakeup unit (400) End；One end of the 7th resistance R7 respectively with the emitter of the 4th switching tube Q4 and one end of the 3rd capacitance C3 Connection, the other end are connected with the base stage of the 4th switching tube Q4 and the other end of the 3rd capacitance C3 respectively.
- 5. the multi-mode wake-up circuit of BMS according to claim 2, it is characterised in that the switch element (100) is also wrapped First switch S2 and current-limiting resistance Rs are included, one end of the first switch S2 is connected with the drain electrode of the first switch pipe Q1, separately One end series connection current-limiting resistance Rs is connected with the source electrode of the first switch pipe Q1.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720940638.2U CN207251244U (en) | 2017-07-31 | 2017-07-31 | A kind of multi-mode wake-up circuit of BMS |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720940638.2U CN207251244U (en) | 2017-07-31 | 2017-07-31 | A kind of multi-mode wake-up circuit of BMS |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110626206A (en) * | 2018-05-31 | 2019-12-31 | 宁德时代新能源科技股份有限公司 | Charging wake-up device and battery system |
| CN111756081A (en) * | 2019-03-29 | 2020-10-09 | 苏州市纽莱克电子科技有限公司 | a charging circuit |
| CN113659642A (en) * | 2020-05-12 | 2021-11-16 | 上汽通用汽车有限公司 | An output switch circuit, power supply system and automobile of a vehicle-mounted 12V lithium battery |
-
2017
- 2017-07-31 CN CN201720940638.2U patent/CN207251244U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110626206A (en) * | 2018-05-31 | 2019-12-31 | 宁德时代新能源科技股份有限公司 | Charging wake-up device and battery system |
| CN111756081A (en) * | 2019-03-29 | 2020-10-09 | 苏州市纽莱克电子科技有限公司 | a charging circuit |
| CN113659642A (en) * | 2020-05-12 | 2021-11-16 | 上汽通用汽车有限公司 | An output switch circuit, power supply system and automobile of a vehicle-mounted 12V lithium battery |
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