CN206099459U - A activation circuit for battery management system - Google Patents
A activation circuit for battery management system Download PDFInfo
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- CN206099459U CN206099459U CN201621157952.5U CN201621157952U CN206099459U CN 206099459 U CN206099459 U CN 206099459U CN 201621157952 U CN201621157952 U CN 201621157952U CN 206099459 U CN206099459 U CN 206099459U
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Abstract
The utility model discloses an activation circuit for battery management system, including power, input P+, output P and the power supply BAT_S of system, P+ and P between be connected with motor M, at power negative pole and P between establish ties in proper order and have resistance R4, switch element Q1's control end and Q1's output, BAT_S is connected with switch element Q3's input, and Q3's output and P+ are connected, between Q3's control end and the connected node between power negative pole and the R4 in proper order the series connection have resistance R1, optical coupler U1's fourth port, U1's third port and resistance R3, U1's first port and input P+ are connected, and U1's second port passes through resistance R2 and is connected with Q1's input, parallelly connected between Q3's output and the control end have a diode D1, and D1's both ends are parallelly connected to have electric capacity C1, the negative pole of power and the connected node ground connection between the R4, this utility model utilizes the characteristic of discrete component to realize filling the activation of charging in the system of putting with the end, from low in power consumption, uses extensively just reduce cost.
Description
Technical field
This utility model is related to battery management system field, more particularly, to the activation electricity for battery management system
Road.
Background technology
Currently, global energy and environment problem is serious, and new energy development is subject to higher and higher concern, new energy with utilizing
On the other hand source, can effectively reduce environmental pollution as the supplement of traditional energy.Lithium battery as a kind of environmentally friendly new forms of energy,
Extensively apply in our life, such as electric automobile, mobile phone, space flight, family's energy storage etc..Therefore, lithium battery is given birth at us
Become more and more important in work, and because lithium battery itself is with the strong characteristic of energy, in the consideration of safe handling, need to be furnished with
One good battery management system.
Lithium battery management system in the market is more, but the way of output for commonly using all is with end using charge and discharge
Mode.In order to preferably to lithium battery pack carry out management and control, it is desirable to little from power consumption after lithium battery management system dormancy, to protect lithium electricity
Pond, it is to avoid during low-voltage, system consumable TV university, lithium battery irrecoverable voltage is discharged to.Meanwhile, because charge and discharge system line
It is identical, need to consider in design, system can carry out power consumption when always band is carried by the activation control end that charges, therefore, on the market
Front end analogue IC is adopted the multisection lithium battery management system of circulation more（AFE）Detection load, first activates front-end A FE, by AFE
The LDO output voltages in portion, activate MCU, and to realize that system works, although realize charge and discharge electrical activation, but circuit is complicated, and into
This is higher.
Utility model content
In view of this, the technical problems to be solved in the utility model is to provide one kind for battery management system, is capable of achieving
Charge and discharge is electrically activated, little from power consumption after dormancy, and circuit is simple and widely used active circuit.
To solve above-mentioned technical problem, the technical scheme that this utility model is provided is：It is a kind of for battery management system
Active circuit, the active circuit includes positive pole connection and the input P+ and power supply for connecting charger of power supply and power supply
Negative pole connection and outfan P- and system power supply for being powered to battery management system for connecting charger
It is connected with a motor M between power supply BAT_S, described input P+ and outfan P-；In the negative pole and outfan P- of power supply
Between be sequentially connected in series the outfan of resistance R4, the control end of switch element Q1 and switch element Q1；Described system power supply
Power supply BAT_S is connected with the input of a switch element Q3, and the outfan of switch element Q3 is connected with input P+；Described opens
Resistance R1 has been sequentially connected in series between the control end and the connecting node between the negative pole and resistance R4 of power supply of closing element Q3,
4th port of photo-coupler U1, the 3rd port of photo-coupler U1 and resistance R3；The first port of photo-coupler U1 with it is defeated
Enter and hold P+ to connect, the second port of photo-coupler U1 is connected by resistance R2 with the input of switch element Q1；Described switch
Diode D1 is parallel between the outfan and control end of element Q3, the two ends of diode D1 are parallel with electric capacity C1；Described electricity
Connecting node ground connection between the negative pole and resistance R4 in source.
Preferably, the photo-coupler U1 includes light emitting diode and phototriode.
Preferably, described diode D1 is Zener diode.
Preferably, described switch element Q1 is audion.
Preferably, it is parallel with a diode between the input and outfan of described switch element Q3.
Preferably, described switch element Q3 is enhancement mode metal-oxide-semiconductor.
Compared with prior art, this utility model has the advantage that：
1. compared with conventional art, circuit of the present utility model is simple, and the characteristic that make use of discrete component realizes charge and discharge
With activation of charging in the system at end；
2. the circuit is little from power consumption, improves lithium battery service life；
3. lithium battery charge and discharge can be widely used in in terminal circuit；
4. the cost of raw material is greatly reduced.
Description of the drawings
Fig. 1 is a kind of active circuit structural representation for battery management system of this utility model.
Specific embodiment
For the ease of it will be appreciated by those skilled in the art that entering to advance to this utility model below in conjunction with accompanying drawing and embodiment
One step is described in detail.
Embodiment 1
As shown in figure 1, a kind of active circuit for battery management system, the active circuit includes power supply and power supply
Positive pole connects and for connecting the input P+ of charger and the negative pole connection of power supply and for connecting the outfan P- of charger
And the system power supply power supply BAT_S for being powered to battery management system, with one between input P+ and outfan P-
Motor M connects；Be sequentially connected in series between the negative pole and outfan P- of power supply resistance R4, the control end of switch element Q1 and
The outfan of switch element Q1.
System power supply power supply BAT_S is connected with the input of a switch element Q3, outfan and the input of switch element Q3
End P+ connections；It is sequentially connected in series between connecting node between the control end of switch element Q3 and the negative pole of power supply and resistance R4
There is resistance R1.
4th port of photo-coupler U1, the 3rd port of photo-coupler U1 and resistance R3；The first of photo-coupler U1
Port is connected with input P+, and the second port of photo-coupler U1 is connected by resistance R2 with the input of switch element Q1；Open
Diode D1 is parallel between the outfan and control end that close element Q3, the two ends of diode D1 are parallel with electric capacity C1；Power supply
Connecting node ground connection between negative pole and resistance R4.
Photo-coupler U1 in the present embodiment includes light emitting diode and phototriode；Diode D1 is the pole of voltage stabilizing two
Pipe；Switch element Q1 is audion；A diode is parallel between the input and outfan of switch element Q3；Switch element Q3
For enhancement mode metal-oxide-semiconductor.
The base stage of the control end correspondence audion of switch element Q1, the current collection of the input correspondence audion of switch element Q1
Pole, the emitter stage of the outfan correspondence audion of switch element Q1；Described audion is NPN type triode.
The grid of the control end correspondence enhancement mode metal-oxide-semiconductor of switch element Q3, the input correspondence enhancement mode of switch element Q3
The drain electrode of metal-oxide-semiconductor, the source electrode of the outfan correspondence enhancement mode metal-oxide-semiconductor of switch element Q3；Described enhancement mode metal-oxide-semiconductor is P-channel
Enhancement mode metal-oxide-semiconductor.
Circuit theory in the present embodiment is：During charging, when charger accesses input P+, during outfan P-, charger
After lithium battery, voltage is reduced voltage, but when remaining above 0.6V, audion Q1 conductings, the first port of photo-coupler U1 and
The control end of second port connection forms pressure reduction, the 3rd port and the conducting of the 4th port, resistance R1 and resistance R3 is formed and is divided
Pressure, according to the turn-on condition of metal-oxide-semiconductor, there is pressure reduction between GS poles, and reaches the conducting voltage of metal-oxide-semiconductor, and enhancement mode metal-oxide-semiconductor Q3 leads
Logical, system power supply power supply BAT_S and input P+ is short-circuit, and voltage is equal, and system power supply power supply BAT_S can give system power supply.
Upon discharging, load accesses moment, and the voltage of outfan P- is equal to input P+, and outfan P- voltages are more than power supply
Cathode voltage, audion Q1 is not turned on, and photo-coupler U1 control first ports and second port cannot be turned on, the 3rd port and the
Four ports cannot turn on, and resistance R1 and resistance R3 does not form partial pressure, and system power supply power supply BAT_S voltages are equal to 0V, meanwhile,
Because the characteristic of audion Q1, without power consumption between outfan P- and power cathode, so that system enters low-power consumption mode.
The active circuit for battery management system of the present embodiment, compared with conventional art, the circuit is simple, utilizes
The characteristic of discrete component realizes charge and discharge with activation of charging in the system at end；It is that system is being discharged using the characteristic of audion Q1
When power consumption it is little, improve lithium battery service life；And the components and parts that used due to the circuit are relatively conventional, greatly reduce
The cost of raw material.
It is above wherein specific implementation of the present utility model, therefore its description is more concrete and detailed, but can not be
And it is interpreted as the restriction to this utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art,
Without departing from the concept of the premise utility, some deformations and improvement can also be made, these obviously replace shape
Formula belongs to protection domain of the present utility model.
Claims (6)
1. a kind of active circuit for battery management system, the active circuit includes the positive pole connection of power supply and power supply and uses
In the input P+ of connection charger and the negative pole connection of power supply and for connecting the outfan P- of charger and for electricity
The system power supply power supply BAT_S that pond management system is powered, it is characterised in that：Between described input P+ and outfan P-
It is connected with a motor M；The control end of resistance R4, switch element Q1 is sequentially connected in series between the negative pole and outfan P- of power supply
And the outfan of switch element Q1；Described system power supply power supply BAT_S is connected with the input of a switch element Q3, switch
The outfan of element Q3 is connected with input P+；Between the described control end of switch element Q3 and the negative pole of power supply and resistance R4
Connecting node between be sequentially connected in series resistance R1, the 4th port of photo-coupler U1, the 3rd port of photo-coupler U1
And resistance R3；The first port of photo-coupler U1 is connected with input P+, and the second port of photo-coupler U1 passes through resistance R2
It is connected with the input of switch element Q1；Diode D1 is parallel between the outfan and control end of described switch element Q3,
The two ends of diode D1 are parallel with electric capacity C1；Connecting node ground connection between the negative pole and resistance R4 of described power supply.
2. the active circuit of battery management system is used for as claimed in claim 1, it is characterised in that：The photo-coupler U1 bags
Include light emitting diode and phototriode.
3. the active circuit of battery management system is used for as claimed in claim 1, it is characterised in that：Described diode D1 is
Zener diode.
4. the active circuit of battery management system is used for as claimed in claim 1, it is characterised in that：Described switch element Q1
For audion.
5. the active circuit of battery management system is used for as claimed in claim 1, it is characterised in that：Described switch element Q3
Input and outfan between be parallel with a diode.
6. the active circuit for battery management system as described in claim 1 or 5, it is characterised in that：Described switch unit
Part Q3 is enhancement mode metal-oxide-semiconductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621157952.5U CN206099459U (en) | 2016-10-25 | 2016-10-25 | A activation circuit for battery management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621157952.5U CN206099459U (en) | 2016-10-25 | 2016-10-25 | A activation circuit for battery management system |
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| Publication Number | Publication Date |
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| CN206099459U true CN206099459U (en) | 2017-04-12 |
Family
ID=58484539
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621157952.5U Active CN206099459U (en) | 2016-10-25 | 2016-10-25 | A activation circuit for battery management system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107889330A (en) * | 2017-12-14 | 2018-04-06 | 宁波绿光能源科技有限公司 | A kind of integral solar energy street lamp self-excited circuit |
| CN108365276A (en) * | 2018-01-09 | 2018-08-03 | 海能达通信股份有限公司 | Active circuit and its Activiation method, battery protection circuit, battery |
| CN111668904A (en) * | 2020-06-23 | 2020-09-15 | 东莞新能安科技有限公司 | Charger detection circuit, method and electrochemical device |
| CN112186279A (en) * | 2020-09-30 | 2021-01-05 | 宁波新舜信息科技有限公司 | Power management system with dormancy activation function |
| CN114335766A (en) * | 2022-01-04 | 2022-04-12 | 星恒电源股份有限公司 | Low-power consumption battery protection and activation circuit |
-
2016
- 2016-10-25 CN CN201621157952.5U patent/CN206099459U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107889330A (en) * | 2017-12-14 | 2018-04-06 | 宁波绿光能源科技有限公司 | A kind of integral solar energy street lamp self-excited circuit |
| CN108365276A (en) * | 2018-01-09 | 2018-08-03 | 海能达通信股份有限公司 | Active circuit and its Activiation method, battery protection circuit, battery |
| CN108365276B (en) * | 2018-01-09 | 2021-02-26 | 海能达通信股份有限公司 | Activation circuit and activation method thereof, battery protection circuit and battery |
| CN111668904A (en) * | 2020-06-23 | 2020-09-15 | 东莞新能安科技有限公司 | Charger detection circuit, method and electrochemical device |
| WO2021258755A1 (en) * | 2020-06-23 | 2021-12-30 | 东莞新能安科技有限公司 | Charger detection circuit and method, and electrochemical device |
| JP2022542526A (en) * | 2020-06-23 | 2022-10-05 | 東莞新能安科技有限公司 | Composite current collectors, electrode sheets, electrochemical devices and electronic devices |
| JP7244632B2 (en) | 2020-06-23 | 2023-03-22 | 東莞新能安科技有限公司 | Composite current collectors, electrode sheets, electrochemical devices and electronic devices |
| CN112186279A (en) * | 2020-09-30 | 2021-01-05 | 宁波新舜信息科技有限公司 | Power management system with dormancy activation function |
| CN112186279B (en) * | 2020-09-30 | 2021-10-08 | 宁波新舜信息科技有限公司 | Power management system with dormancy activation function |
| CN114335766A (en) * | 2022-01-04 | 2022-04-12 | 星恒电源股份有限公司 | Low-power consumption battery protection and activation circuit |
| CN114335766B (en) * | 2022-01-04 | 2023-11-14 | 星恒电源股份有限公司 | Low-power consumption battery protection and activation circuit |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190627 Address after: 410000 Six Building and Two Floors of Changsha Xincheng Science and Technology Park, 588 Yuelu Avenue West, Changsha High-tech Development Zone, Hunan Province Patentee after: HUNAN UNICORETECH MICROELECTRONIC TECHNOLOGY CO., LTD. Address before: 516000 Room 12-14, 7th Floor, Henan Bank Community Activity Center Building, Henan Bank Park District, Huicheng District, Guangdong Province Patentee before: Huizhou Sheng Xinyuan Technology Co. Ltd. |
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| TR01 | Transfer of patent right |