CN206850457U - A kind of charging wake-up circuit and system applied to battery management system - Google Patents
A kind of charging wake-up circuit and system applied to battery management system Download PDFInfo
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- CN206850457U CN206850457U CN201720194741.7U CN201720194741U CN206850457U CN 206850457 U CN206850457 U CN 206850457U CN 201720194741 U CN201720194741 U CN 201720194741U CN 206850457 U CN206850457 U CN 206850457U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model embodiment discloses a kind of charging wake-up circuit and system applied to battery management system, for technical field of battery management.The utility model embodiment charging wake-up circuit includes system wake-up circuit and the system charging circuit for being connected with external charger, the system charging circuit is connected respectively with the battery anode in battery management system and single-chip microcomputer, the system wake-up circuit connects the system charging circuit respectively, battery anode and single-chip microcomputer in the battery management system, the system charging circuit includes being controlled break-make by the single-chip microcomputer, for controlling the switch module turned between the system charging circuit and battery anode, the first end of the switch module connects the battery anode, second end of the switch module connects the first I/O mouths of the single-chip microcomputer.The utility model has high reliability and stability, can prevent external interference, so as to avoid the risk that battery life is reduced or even leakage is on fire.
Description
Technical field
Technical field of battery management is the utility model is related to, a kind of more particularly to charging applied to battery management system is called out
Awake circuit and system.
Background technology
Battery management system (BATTERY MANAGEMENT SYSTEM, BMS) is connection electrokinetic cell and dust catcher, electricity
Power driven tools, garden instrument, the important tie of electric automobile, its major function include：Battery physical parameter monitors in real time；Battery shape
State is estimated；Inline diagnosis and early warning；Charge and discharge control with preliminary filling；Balanced management and heat management etc..
In BMS, when whole system is in holding state, in order that stand-by power consumption is as minimum as possible, it may require that in BMS
Micro-control unit (Microcontroller Unit, MCU) can as far as possible turning off standby when without using all peripheral hardwares, together
When MCU can also enter standby mode；Therefore, a kind of hardware mechanisms that MCU can be waken up under holding state must just be retained
It is not turned off, and the wake-up circuit must have very high stability and reliability, can prevent external interference；Because can not
The wake-up circuit leaned on, it may result in whole system and waking up always and changed between standby two states, so that battery mistake
Put, it is even on fire that leakage can occur when serious.
Prior art as shown in Figure 1, in BMS wake-up circuit, there are the following problems：Charger accesses, just at once
System directly has been waken up, without the guarantee and protection of reliability, false triggering can not be avoided.
The content of the invention
The utility model embodiment provides a kind of charging wake-up circuit and system applied to battery management system, has
High reliability and stability, external interference can be prevented, so as to avoid the risk that battery life is reduced or even leakage is on fire.
In a first aspect, the application provides a kind of charging wake-up circuit applied to battery management system, the charging wakes up
Circuit includes system wake-up circuit and the system charging circuit for being connected with external charger, the system charging circuit and electricity
Battery anode and single-chip microcomputer in the management system of pond connect respectively, and the system wake-up circuit connects the system charging respectively
Circuit, battery anode and single-chip microcomputer in the battery management system, the system charging circuit are included by the monolithic
Machine controls break-make, for controlling the switch module turned between the system charging circuit and battery anode, the switch
The first end of module connects the battery anode, and the second end of the switch module connects the first I/O mouths of the single-chip microcomputer.
Optionally, the system charging circuit also includes rectification module, the first end and external charging of the rectification module
Device is connected, and the second end of the rectification module is connected with the switch module, the system wake-up circuit respectively.
Optionally, the system wake-up circuit include triode, make the stabilized input voltage of the single-chip microcomputer at one not
Voltage stabilizing module more than its limit value, the driving for filtering the filtration module of clutter and driving current being provided for the triode
Module, the colelctor electrode of the triode connect the first end of the Voltage stabilizing module, and the base stage of the triode connects the driving
The first end of module, the end of drive module second connect the battery anode, and the emitter stage of the triode connects respectively
Second end of the rectification module and the 3rd end of the switch module, the second end of the Voltage stabilizing module connect the filtering mould
The first end of block, the 3rd end ground connection of the Voltage stabilizing module, the second end of the filtration module connect the single-deck and second
I/O mouths.
Optionally, the drive module is resistance.
Optionally, the Voltage stabilizing module is voltage-stabiliser tube.
Optionally, the filter circuit is RC filter circuits.
Second aspect, the application also provide a kind of battery management system, and the battery management system includes battery pack, single-chip microcomputer
With charging wake-up circuit, wherein, the charging wake-up circuit is charging wake-up circuit as described in any in first aspect.
As can be seen from the above technical solutions, the utility model embodiment has advantages below：
In the utility model embodiment when BMS is in holding state, it is necessary to charge wake-up when, the circuit can ensure necessarily
, could be reliable in the case where the positive access of charger and having voltage difference (typically about 0.7V) between voltage and cell voltage
MCU is waken up, false triggering wake-up is restrained effectively, has very high stability and reliability, external interference can be prevented, so as to
Avoid the risk that battery life is reduced or even leakage is on fire.
Brief description of the drawings
Fig. 1 is the schematic diagram of battery management system in the prior art；
Fig. 2 is that one embodiment of the charging wake-up circuit applied to battery management system in the utility model embodiment is shown
It is intended to；
Fig. 3 is another embodiment for the charging wake-up circuit for being applied to battery management system in the utility model embodiment
Schematic diagram；
Fig. 4 is another embodiment for the charging wake-up circuit for being applied to battery management system in the utility model embodiment
Schematic diagram.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
A kind of charging wake-up circuit applied to battery management system is provided in the utility model embodiment, as shown in Fig. 2
In dotted line frame it is the utility model in illustrations for one embodiment schematic diagram of battery management system in the utility model
Charge wake-up circuit in embodiment, in the charging wake-up circuit that this is applied to battery management system, including system wake-up circuit
With the system charging circuit for being connected with external charger, the system charging circuit and the battery pack in battery management system
Positive pole and single-chip microcomputer connect respectively, and the system wake-up circuit connects the system charging circuit, the battery management system respectively
Battery anode and single-chip microcomputer in system, the system charging circuit includes being controlled break-make by the single-chip microcomputer, for control
The switch module turned between the system charging circuit and battery anode is made, described in the first end connection of the switch module
Battery anode, the second end of the switch module connect the first I/O mouths of the single-chip microcomputer.
In the utility model embodiment when BMS is in holding state, it is necessary to charge wake-up when, the circuit can ensure necessarily
In the case where the positive access of charger and voltage are more than more than cell voltage 0.7V, MCU could be reliably waken up, is effectively pressed down
False triggering wake-up has been made, has had very high stability and reliability, external interference can be prevented, so as to avoid battery life
Reduce or even leakage risk on fire.
Optionally, as shown in figure 3, being another application in the utility model in the charging wake-up circuit of battery management system
Schematic diagram, wherein, the system charging circuit also includes rectification module, and first end and the external charger of the rectification module connect
Connect, the second end of the rectification module is connected with the switch module, the system wake-up circuit respectively.
Optionally, as shown in figure 3, the system wake-up circuit includes triode, makes the input voltage of the single-chip microcomputer steady
A Voltage stabilizing module for being no more than its limit value is scheduled on, the filtration module of clutter is filtered and provides driving for the triode
The drive module of electric current, the colelctor electrode of the triode connect the first end of the Voltage stabilizing module, and the base stage of the triode connects
The first end of the drive module is connect, the end of drive module second connects the battery anode, the transmitting of the triode
Pole connects the second end of the rectification module and the 3rd end of the switch module, the second end connection of the Voltage stabilizing module respectively
The first end of the filtration module, the 3rd end ground connection of the Voltage stabilizing module, the second end of the filtration module connects the list
Disk and the 2nd I/O mouths.
Optionally, triode is PNP triode in the utility model embodiment.
Optionally, the drive module is resistance.
Optionally, the Voltage stabilizing module is voltage-stabiliser tube.
Optionally, the filter circuit is RC filter circuits.
In the utility model embodiment, when battery management system is in holding state, charger is inserted, if VC+ ＞
More than VBAT+0.7V, then triode ON, so that charger voltage C+ gives MCU to wake up by Voltage stabilizing module and filtration module
First one, I/O mouths rising edge level change, is waken up MCU, so as to which system is converted into charged state from holding state, this
When MCU switch module (ON/OFF modules) is opened, charger can charge to battery pack.
Wherein, the effect of Voltage stabilizing module：2nd I/O mouth input voltages of single-chip microcomputer have a restriction scope, voltage stabilizing mould
Block can make one fixed value of magnitude of voltage that the second I/O adopts and limit scope no more than its.
The effect of filtration module：Clutter is filtered, makes circuit more reliable and more stable.
The course of work of the utility model embodiment is introduced with a specific embodiment below.
As shown in figure 4, in above-described embodiment, rectification module uses diode；Voltage stabilizing module uses voltage-stabiliser tube；Filtration module
Filtered using RC；Drive module uses resistance.
When battery management system is in holding state, charger is inserted, only when charger output voltage (VC+) is more than
More than cell voltage 0.7V, then triode Q1 is turned on, so that charger voltage wakes up the first I/ by D1, R2 and Z1 to MCU
One rising edge level change of O mouths, is waken up MCU, so as to which system is converted into charged state from holding state, now MCU
ON/OFF modules are opened, charger can charge to battery pack.
Wherein, resistance R1 effect：Driving current is provided to Q1；Resistance R2 effect：Partial pressure, current limliting；Resistance R3 work
With：With electric capacity C1 together, RC filtering is formed, current limliting, the electric current of the I/O mouths of inflow single-chip microcomputer the 2nd is no more than its extreme value.
Second aspect, the utility model also provide a kind of battery management system, and the battery management system includes battery pack, list
Piece machine and charging wake-up circuit, wherein, the charging wake-up circuit is that any described charging wake-up circuit in example is performed as described above.
It is apparent to those skilled in the art that for convenience and simplicity of description, in the above-described embodiments,
Description to each embodiment all emphasizes particularly on different fields, and does not have the part being described in detail in some embodiment, may refer to other embodiment
Associated description.
Described above, above example is only to illustrate the technical solution of the utility model, rather than its limitations；Although ginseng
The utility model is described in detail according to previous embodiment, it will be understood by those within the art that：It is still
Technical scheme described in foregoing embodiments can be modified, or which part technical characteristic is equally replaced
Change；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the utility model technical scheme
Spirit and scope.
Claims (7)
1. a kind of charging wake-up circuit applied to battery management system, it is characterised in that the charging wake-up circuit is including being
System wake-up circuit and the system charging circuit for being connected with external charger, the system charging circuit and battery management system
In battery anode and single-chip microcomputer connect respectively, the system wake-up circuit connects the system charging circuit, described respectively
Battery anode and single-chip microcomputer in battery management system, the system charging circuit include logical by single-chip microcomputer control
It is disconnected, for controlling the switch module turned between the system charging circuit and battery anode, the of the switch module
One end connects the battery anode, and the second end of the switch module connects the first I/O mouths of the single-chip microcomputer.
2. charging wake-up circuit according to claim 1, it is characterised in that the system charging circuit also includes rectification mould
Block, the first end of the rectification module are connected with external charger, the second end of the rectification module respectively with the switching molding
Block, system wake-up circuit connection.
3. charging wake-up circuit according to claim 2, it is characterised in that the system wake-up circuit include triode,
Make the stabilized input voltage of the single-chip microcomputer in a Voltage stabilizing module for being no more than its limit value, filter clutter filtration module,
And the drive module of driving current is provided for the triode, the colelctor electrode of the triode connects the of the Voltage stabilizing module
One end, the base stage of the triode connect the first end of the drive module, and the end of drive module second connects the battery
Group positive pole, the emitter stage of the triode connect the second end of the rectification module and the 3rd end of the switch module respectively,
Second end of the Voltage stabilizing module connects the first end of the filtration module, the 3rd end ground connection of the Voltage stabilizing module, the filter
Second end of ripple module connects the 2nd I/O mouths of the single-chip microcomputer.
4. according to the charging wake-up circuit described in claim 3, it is characterised in that the drive module is resistance.
5. charging wake-up circuit according to claim 3, it is characterised in that the Voltage stabilizing module is voltage-stabiliser tube.
6. charging wake-up circuit according to claim 3, it is characterised in that the filter circuit is RC filter circuits.
A kind of 7. battery management system, it is characterised in that including battery pack, single-chip microcomputer and charging wake-up circuit, wherein, it is described to fill
Electric wake-up circuit is the charging wake-up circuit as described in any in claim 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720194741.7U CN206850457U (en) | 2017-03-02 | 2017-03-02 | A kind of charging wake-up circuit and system applied to battery management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720194741.7U CN206850457U (en) | 2017-03-02 | 2017-03-02 | A kind of charging wake-up circuit and system applied to battery management system |
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| Publication Number | Publication Date |
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| CN206850457U true CN206850457U (en) | 2018-01-05 |
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ID=60789811
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108318827A (en) * | 2018-03-07 | 2018-07-24 | 华霆（合肥）动力技术有限公司 | Apparatus for testing weeping, system and electric vehicle |
| CN108767946A (en) * | 2018-08-24 | 2018-11-06 | 深圳市道通智能航空技术有限公司 | A kind of wake-up circuit and battery management system |
| CN109638904A (en) * | 2018-11-30 | 2019-04-16 | 宁波革鑫新能源科技有限公司 | Lithium battery protection board |
| CN112816888A (en) * | 2019-11-18 | 2021-05-18 | 海能达通信股份有限公司 | Terminal awakening method, detection circuit and terminal |
-
2017
- 2017-03-02 CN CN201720194741.7U patent/CN206850457U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108318827A (en) * | 2018-03-07 | 2018-07-24 | 华霆（合肥）动力技术有限公司 | Apparatus for testing weeping, system and electric vehicle |
| CN108318827B (en) * | 2018-03-07 | 2023-11-28 | 华霆（合肥）动力技术有限公司 | Liquid leakage detection device, system and electric vehicle |
| CN108767946A (en) * | 2018-08-24 | 2018-11-06 | 深圳市道通智能航空技术有限公司 | A kind of wake-up circuit and battery management system |
| WO2020038406A1 (en) * | 2018-08-24 | 2020-02-27 | 深圳市道通智能航空技术有限公司 | Wake-up circuit and battery management system |
| CN108767946B (en) * | 2018-08-24 | 2024-03-29 | 深圳市道通智能航空技术股份有限公司 | Wake-up circuit and battery management system |
| CN109638904A (en) * | 2018-11-30 | 2019-04-16 | 宁波革鑫新能源科技有限公司 | Lithium battery protection board |
| CN112816888A (en) * | 2019-11-18 | 2021-05-18 | 海能达通信股份有限公司 | Terminal awakening method, detection circuit and terminal |
| CN112816888B (en) * | 2019-11-18 | 2024-05-10 | 海能达通信股份有限公司 | Terminal awakening method, detection circuit and terminal |
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