CN209642352U - A kind of battery management system power supply suspend mode and activation system - Google Patents
A kind of battery management system power supply suspend mode and activation system Download PDFInfo
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- CN209642352U CN209642352U CN201920438992.4U CN201920438992U CN209642352U CN 209642352 U CN209642352 U CN 209642352U CN 201920438992 U CN201920438992 U CN 201920438992U CN 209642352 U CN209642352 U CN 209642352U
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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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Abstract
The utility model relates to new energy lithium battery management system technical fields, more particularly to a kind of battery management system power supply suspend mode and activation system, including charger, cell array, DCDC, U1, U2, power knob and MCU, the positive terminal of charger respectively with the positive terminal of cell array, one end of C1 capacitor, one end of R5 resistance, one end of R1 and the VIN pin connection of DCDC, the negative pole end of charger is connect with the negative pole end of D2 diode, the negative pole end of cell array one end with R4 resistance respectively, the other end of C1 capacitor, the one end therein U1, the one end therein U2, ground terminal, two GND pins of DCDC, the positive terminal of D1 diode, one end of R3 resistance, one end of C3 capacitor and the GND pin connection of MCU, the utility model Circuit design meets the demand of existing battery low energy consumption, powers on, activates, charge activation and four kinds of states of suspend mode, and state when greatly protecting battery idle avoids battery from over-discharge damage occur, and extend battery uses the time.
Description
Technical field
The utility model relates to new energy lithium battery management system technical fields, and in particular to a kind of battery management system electricity
Source suspend mode and activation system.
Background technique
It is very stringent to the horsepower requirements of battery management system, it is necessary to have since battery is powered in battery management system
Outstanding managing power consumption can meet the requirement to battery management system low-power consumption, and battery over-discharge is avoided to damage battery；Battery
Economize on electricity must be taken into consideration in management system circuit design itself, and device selects low energy consumption horizontal device as possible, but only these are not
It is sufficient for needing, battery over-discharge caused by being left unused or placed for a long time due to battery group installation battery management system keeps battery thorough
The accident that bottom is scrapped emerges one after another.It is long although power consumption very little since BMS or protection board are installed together with battery always
Phase does not charge, and also results in battery over-discharge and scraps.
Utility model content
For the deficiency in above-mentioned background technique, the utility model discloses a kind of battery management system power supply suspend mode and swash
Live system, for solving the problem of that battery is not charged for a long time so that overdischarge is easy to cause to damage battery.
Specific technical solution is as follows:
A kind of battery management system power supply suspend mode and activation system, including charger, cell array, DCDC, U1, U2, electricity
Source button and MCU, the positive terminal of the charger respectively with the positive terminal of cell array, one end of C1 capacitor, R5 resistance one
The VIN pin connection at end, one end of R1 and DCDC, the negative pole end of the charger are connect with the negative pole end of D2 diode, institute
State the negative pole end of cell array respectively with one end of R4 resistance, the other end of C1 capacitor, the one end therein U1, U2 therein one
End, ground terminal, DCDC two GND pins, the positive terminal of D1 diode, one end of R3 resistance, one end of C3 capacitor and MCU
GND pin connection, the other end of the R4 resistance connect with the U1 other end therein, and the U1 other end therein is connected to
The positive terminal of D2 diode, the U1 other end therein be respectively connected to the other end of R1 resistance, the U2 other end therein and
Ground terminal, the other end of the R1 resistance are respectively connected to the EN pin and the U2 other end therein of DCDC, the R5 resistance
The other end is connect with the U2 other end therein, and the U2 other end therein is connect with ground terminal, the U2 other end therein
It is connect respectively with the collector of the positive terminal of D3 diode and Q1 triode, the negative pole end of the D3 diode is pressed with power supply respectively
One end of button is connected with the negative pole end of D4 diode, the other end of the power knob hair with ground terminal and Q1 triode respectively
Emitter-base bandgap grading connection, the base stage of the Q1 triode are connect with one end of R7 resistance, the other end of the R7 resistance and the OUT-1 of MCU
Pin connection, the positive terminal of the D4 diode are connect with the IN-1 pin of one end of R6 resistance and MCU respectively, the R6 resistance
The other end connect with the end VCC, the VCC pin of the MCU respectively with the end VCC, one end of L1 inductance, C3 capacitor the other end,
One end of C2 capacitor is connected with one end of R2 resistance, the other end of the C2 capacitor respectively with the other end of R2 resistance, R3 resistance
The other end connected with the FB pin of DCDC, the other end of the L1 inductance SW with the negative pole end of D1 diode and DCDC respectively
Pin connection, the positive terminal of the cell array and one end of C1 capacitor form the end B+, the negative pole end and R4 of the cell array
One end of resistance forms the end B-, and the negative pole end of the charger and the negative pole end of D2 diode form the end P-；
Preferably, the U1 is battery management system charging activation switch；
Preferably, the U2 is battery management system activation, sleep switch；
Preferably, the Q1 triode is NPN type；
A kind of battery management system power supply suspend mode and activation system, working method are as follows:
1) power on: after connection cell array, electric current passes through to the end VIN of DCDC, powers for DCDC；
Wherein, R1 is the end EN that pull-up resistor connects DCDC, and the end EN is the enable end DCDC and low level is effective, and DCDC is in
Idle mode；
2) it activates: pressing power knob, the positive electrode current of cell array is opened by R5 resistance, U2 primary, D3 diode, power supply
The end B- is closed, U2 primary is driven, completes closed loop；After U2 is driven, secondary conducting, the end EN of DCDC is dragged down, and DCDC swashs
It is living, it powers to management system, completes activation；
Wherein, after MCU work, OUT-1 exports high level signal, and electric current drives Q1 triode, Q1 triode from R7 resistance
It drives U2 primary, after U2 grade conducting, drags down the end EN of DCDC, complete control closed loop, DCDC is also held after power knob release
Continuous work；
3) charging activation: battery management system connects charger charging in dormant state, and charger voltage is greater than cell array
Column voltage, since just, the end P- voltage is lower than the end B- altogether, battery current flows to P- through the end B-, R4 resistance, U1 primary, D2 diode
End, driving U1 work, U1 grade conducting drag down the end EN of DCDC, and DCDC activates work, powers to battery management system, completes
Charging activation；
4) button suspend mode: not connected charger, battery management system normal operating conditions press power knob, bis- pole D4
Pipe cathode drags down, and the end the IN-1 level of MCU drags down, and MCU detection IN-1 pin is pulled low, and triggers suspend mode, and OUT-1 exports low electricity
Flat, Q1 triode cut-off, U2 stops working, and button unclamps, and the end EN of DCDC is drawn high, and releases work and enables, and DCDC stops working,
Entire management system power supply stops working, management system suspend mode, is in not power consumption state, and battery stops electric discharge, will not over-discharge damage
It is bad.
5) battery over-discharge suspend mode: not connected charger, after discharging into low battery protection value, battery management system closes battery
Discharge channel is closed, battery is protected.Because not connected charger, battery capacity cannot be supplemented, MCU can trigger low electricity
Suspend mode is measured, OUT-1 exports low level, the cut-off of Q1 triode, and U2 stops working, and the end EN of DCDC is drawn high, and it releases work and enables,
DCDC stops working, and entire management system power supply stops working, management system suspend mode, is in not power consumption state, battery will not mistake
Put damage.
The utility model has the advantages that
The circuit design of the utility model meets the demand of existing battery low energy consumption, battery Working mould to the greatest extent
Formula is divided into four kinds, respectively power on, activate, activation of charging, suspend mode and over-discharge suspend mode without five states, to greatly protect electricity
State when pond is idle, avoids battery from over-discharge damage occur, and extend battery uses the time.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1: the utility model principle figure.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The range of the utility model protection.
Referring to Fig. 1: a kind of battery management system power supply suspend mode and activation system, including charger, cell array, DCDC,
U1, U2, power knob and MCU, the positive terminal of charger respectively with the positive terminal of cell array, one end of C1 capacitor, R5 resistance
One end, one end of R1 and the VIN pin connection of DCDC, the negative pole end of charger connect with the negative pole end of D2 diode, electric
The negative pole end of pond array respectively with one end of R4 resistance, the other end of C1 capacitor, the one end therein U1, the one end therein U2, connect
Ground terminal, two GND pins of DCDC, the positive terminal of D1 diode, one end of R3 resistance, one end of C3 capacitor and MCU GND
Pin connection, the other end of R4 resistance are connect with the U1 other end therein, and the U1 other end therein is being connected to D2 diode just
Extremely, the U1 other end therein is respectively connected to the other end of R1 resistance, the U2 other end therein and ground terminal, R1 resistance it is another
One end is respectively connected to the EN pin and the U2 other end therein of DCDC, and the other end and the U2 other end therein of R5 resistance connect
Connect, the U2 other end therein is connect with ground terminal, the U2 other end therein respectively with the positive terminal of D3 diode and Q1 triode
Collector connection, the negative pole end of D3 diode connect with the negative pole end of one end of power knob and D4 diode respectively, power supply
The other end of button is connect with the emitter of ground terminal and Q1 triode respectively, and the base stage of Q1 triode and one end of R7 resistance connect
Connect, the OUT-1 pin of the other end of R7 resistance and MCU connect, the positive terminal of D4 diode respectively with one end of R6 resistance and MCU
The connection of IN-1 pin, the other end of R6 resistance connect with the end VCC, the VCC pin of MCU respectively with the end VCC, L1 inductance one
End, the other end of C3 capacitor, C2 capacitor one end connected with one end of R2 resistance, the other end of C2 capacitor respectively with R2 resistance
The other end, the other end of R3 resistance are connected with the FB pin of DCDC, the other end of the L1 inductance negative pole end with D1 diode respectively
Connected with the SW pin of DCDC, one end of the positive terminal of cell array and C1 capacitor forms the end B+, the negative pole end of cell array with
One end of R4 resistance forms the end B-, and the negative pole end of charger and the negative pole end of D2 diode form the end P-.
Specifically, U1 is battery management system charging activation switch；
Specifically, U2 is battery management system activation, sleep switch；
Specifically, Q1 triode is NPN type；
Specifically, battery Battery1~batteryn is the cell array of battery management system management；
Specifically, C1, DCDC, C2, D1, L1, R2, R3, C3 form battery management system power unit, for battery electricity
Pressure carries out decompression supply battery management system；
Specifically, MCU is battery management system control core, here it is power control signal sources；
Specifically, charger is used to illustrate how the battery management system in activation suspend mode；
Specifically, power knob D3, D4, Q1, R7 are that manual actuation and suspend mode control；
Specific working method are as follows:
1) power on: after connection cell array, electric current passes through to the end VIN of DCDC, powers for DCDC；
Wherein, R1 is the end EN that pull-up resistor connects DCDC, and the end EN is the enable end DCDC and low level is effective, and DCDC is in
Idle mode；
2) it activates: pressing power knob, the positive electrode current of cell array is opened by R5 resistance, U2 primary, D3 diode, power supply
The end B- is closed, U2 primary is driven, completes closed loop；After U2 is driven, secondary conducting, the end EN of DCDC is dragged down, and DCDC swashs
It is living, it powers to management system, completes activation；
Wherein, after MCU work, OUT-1 exports high level signal, and electric current drives Q1 triode, Q1 triode from R7 resistance
It drives U2 primary, after U2 grade conducting, drags down the end EN of DCDC, complete control closed loop, DCDC is also held after power knob release
Continuous work；
3) charging activation: battery management system connects charger charging in dormant state, and charger voltage is greater than cell array
Column voltage, since just, the end P- voltage is lower than the end B- altogether, battery current flows to P- through the end B-, R4 resistance, U1 primary, D2 diode
End, driving U1 work, U1 grade conducting drag down the end EN of DCDC, and DCDC activates work, powers to battery management system, completes
Charging activation；
4) suspend mode: not connected charger, battery management system normal operating conditions press power knob, and D4 diode is negative
Pole drags down, and the end the IN-1 level of MCU drags down, and MCU detection IN-1 pin is pulled low, and triggers suspend mode, and OUT-1 exports low level, Q1
Triode cut-off, U2 stop working, and button unclamps, and the end EN of DCDC is drawn high, and release work and enable, DCDC stops working, entirely
Management system power supply stops working, management system suspend mode, is in not power consumption state, and battery stops electric discharge, will not over-discharge damage.
5) battery over-discharge suspend mode: not connected charger, after discharging into low battery protection value, battery management system closes battery
Discharge channel is closed, battery is protected.Because not connected charger, battery capacity cannot be supplemented, MCU can trigger low electricity
Suspend mode is measured, OUT-1 exports low level, the cut-off of Q1 triode, and U2 stops working, and the end EN of DCDC is drawn high, and it releases work and enables,
DCDC stops working, and entire management system power supply stops working, management system suspend mode, is in not power consumption state, battery will not mistake
Put damage.
The circuit design of the utility model meets the demand of existing battery low energy consumption, battery Working mould to the greatest extent
Formula is divided into four kinds, respectively powers on, activates, five kinds of activation of charging, suspend mode and over-discharge suspend mode states, to greatly protect electricity
State when pond is idle, avoids battery from over-discharge damage occur, and extend battery uses the time.
Above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；Although referring to aforementioned reality
Example is applied the utility model is described in detail, those skilled in the art should understand that: it still can be to preceding
Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
It modifies or replaces, the spirit and model of various embodiments of the utility model technical solution that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (4)
1. a kind of battery management system power supply suspend mode and activation system, it is characterised in that: including charger, cell array, DCDC,
U1, U2, power knob and MCU, the positive terminal of the charger respectively with the positive terminal of cell array, one end of C1 capacitor, R5
The VIN pin of one end of resistance, one end of R1 and DCDC connects, the negative pole end of the charger and the negative pole end of D2 diode
Connection, the negative pole end of the cell array respectively with one end of R4 resistance, the other end of C1 capacitor, the one end therein U1, U2 its
In one end, ground terminal, two GND pins of DCDC, the positive terminal of D1 diode, one end of R3 resistance, C3 capacitor one end
And the GND pin connection of MCU, the other end of the R4 resistance are connect with the U1 other end therein, the U1 is therein another
End is connected to the positive terminal of D2 diode, and it is therein that the U1 other end therein is respectively connected to the other end of R1 resistance, U2
The other end and ground terminal, the other end of the R1 resistance is respectively connected to the EN pin and the U2 other end therein of DCDC, described
The other end of R5 resistance is connect with the U2 other end therein, and the U2 other end therein is connect with ground terminal, and the U2 is wherein
The other end connect respectively with the collector of the positive terminal of D3 diode and Q1 triode, the negative pole end of D3 diode difference
Connect with the negative pole end of one end of power knob and D4 diode, the other end of the power knob respectively with ground terminal and Q1 tri-
The emitter of pole pipe connects, and the base stage of the Q1 triode is connect with one end of R7 resistance, the other end and MCU of the R7 resistance
The connection of OUT-1 pin, the positive terminal of the D4 diode connect with the IN-1 pin of one end of R6 resistance and MCU respectively, institute
The other end for stating R6 resistance connect with the end VCC, the VCC pin of the MCU respectively with the end VCC, one end of L1 inductance, C3 capacitor
The other end, C2 capacitor one end connected with one end of R2 resistance, the other end of the C2 capacitor respectively with the other end of R2 resistance,
The other end of R3 resistance is connected with the FB pin of DCDC, the other end of the L1 inductance respectively with the negative pole end of D1 diode and
The SW pin of DCDC connects, and the positive terminal of the cell array and one end of C1 capacitor form the end B+, and the cell array is born
The end B- is extremely formed with one end of R4 resistance, the negative pole end of the charger and the negative pole end of D2 diode form the end P-.
2. battery management system power supply suspend mode according to claim 1 and activation system, it is characterised in that: the U1 is electricity
Pond management system charging activation switch.
3. battery management system power supply suspend mode according to claim 1 and activation system, it is characterised in that: the U2 is electricity
The activation of pond management system, sleep switch.
4. battery management system power supply suspend mode according to claim 1 and activation system, it is characterised in that: tri- pole Q1
Pipe is NPN type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920438992.4U CN209642352U (en) | 2019-04-02 | 2019-04-02 | A kind of battery management system power supply suspend mode and activation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920438992.4U CN209642352U (en) | 2019-04-02 | 2019-04-02 | A kind of battery management system power supply suspend mode and activation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209642352U true CN209642352U (en) | 2019-11-15 |
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ID=68497197
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920438992.4U Active CN209642352U (en) | 2019-04-02 | 2019-04-02 | A kind of battery management system power supply suspend mode and activation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209642352U (en) |
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2019
- 2019-04-02 CN CN201920438992.4U patent/CN209642352U/en active Active
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