CN206164118U - Lithium ion battery discharging protecting circuit and lithium ion battery discharging system - Google Patents
Lithium ion battery discharging protecting circuit and lithium ion battery discharging system Download PDFInfo
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- CN206164118U CN206164118U CN201620562223.1U CN201620562223U CN206164118U CN 206164118 U CN206164118 U CN 206164118U CN 201620562223 U CN201620562223 U CN 201620562223U CN 206164118 U CN206164118 U CN 206164118U
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- ion battery
- discharge
- lithium ion
- batteries piles
- mos switch
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Abstract
The utility model discloses a lithium ion battery discharging protecting circuit, including the MOS switch element, the discharge protection unit and the direct current contactor unit that link to each other respectively with the MOS switch element. The discharge protection unit carries out realtime data acquisition to discharging of lithium ion battery group and judges relatively and export discharge control signal, and the MOS switch element comes the disconnection or switches on the return circuit of discharging to lithium ion battery group according to discharge control signal control direct current contactor unit, plays the effect of protection lithium ion battery group, because direct current contactor can pass through very big operating current, therefore this protection circuit is particularly suitable for more than hundred amperes current discharge's lithium ion battery lithium ion battery 1 greatly.
Description
Technical field
The utility model is related to battery discharge protection technical field, more particularly to a kind of lithium ion battery discharge protection circuit
And lithium ion battery discharge system.
Background technology
Lithium ion battery is a kind of secondary cell（Rechargeable battery）, mainly move between a positive electrode and a negative electrode by lithium ion
Move and carry out work.In discharge and recharge, Li+ comes and goes embedded and deintercalation between bipolarity end, and during charging, Li+ is passed through from positive pole deintercalation
Electrolyte is embedded in negative pole, and negative pole is in rich lithium state；It is then contrary during electric discharge.Lithium ion battery is in consumer electronics field and power
The energy storing device that energy storage field is used widely, to prevent when non-normal use occurs overcharge or overdischarge phenomenon
Cause the damage of lithium ion battery or even security incident occurs, there is protection circuit when lithium ion battery is actually used, protect
Circuit generally had the functions such as over.
At present, lithium ionic battery protection circuit is mainly included for being detected to the voltage of lithium ion battery, electric current
Decision circuit（Usually IC chip and resistance capacitance）And for turning off/turning on the switch element of discharge loop（Usually
Metal-oxide-semiconductor）.When lithium ion battery or wherein certain cell occurs abnormal, the chip in decision circuit is by the electricity collected
Pressure, current information provide judgement, export different control signals in corresponding controling end and are discharged back with controlling corresponding metal-oxide-semiconductor shut-off
Road, and then protect lithium ion battery safety.
In recent years, lithium ion battery the fields such as automobile starting battery, electric automobile and energy storage extensive application, and consumption
Unlike field, the lithium ion battery electric current in these applications may be up to hundred ampere levels or higher, now single
Individual metal-oxide-semiconductor cannot meet the requirement that high current passes through.For small current（Such as tens of Ampere currents of electric bicycle）Rank lithium
Ion battery, is solved generally by the way of many metal-oxide-semiconductor parallel connections, but for the protection electricity of hundreds of amperes or more high current
Road, in parallel using many metal-oxide-semiconductor M1 ~ Mn, so not only bulky, cost is high, and short circuit or very high current flows through
Shi Rongyi because electric current distribution it is unbalanced cause part metal-oxide-semiconductor to burn the problems such as.
The content of the invention
The technical problems to be solved in the utility model is, for the drawbacks described above of prior art, there is provided a kind of lithium ion
Battery discharge prevention circuit and lithium ion battery discharge system.
The utility model solves the technical scheme that its technical problem adopted：According to one side of the present utility model, carry
For a kind of lithium ion battery discharge protection circuit, including the discharge prevention unit being connected with Li-ion batteries piles, electricity consumption is connected to
The D.C. contactor unit of the discharge loop of equipment and Li-ion batteries piles, and with discharge prevention unit, D.C. contactor list
The connected MOS switch unit of unit；Wherein, discharge prevention unit carries out real time data acquisition to Li-ion batteries piles and judges ratio
Relatively and export discharge control signal；MOS switch unit controls D.C. contactor unit to disconnect or lead according to discharge control signal
The logical discharge loop to Li-ion batteries piles.
Preferably, the discharge prevention unit includes Li-ion Battery Protective Chip and the electricity being connected with Li-ion batteries piles
Resistance capacity cell, Li-ion Battery Protective Chip includes the control source for Li-ion batteries piles to be carried out with real time data acquisition
End, discharge control terminal DO for exporting discharge control signal and touch for carrying out real time signal aquisition to electrical equipment
Originator VM.
Preferably, the D.C. contactor unit includes that series winding is connected to a polar end of electrical equipment and Li-ion batteries piles
Between the D.C. contactor K2 comprising driving coil L2；Driving coil L2 is connected to lithium ion battery with MOS switch unit series winding
Between the positive terminal B+ and negative pole end B- of group.
Preferably, the D.C. contactor K2 is D.C. contactor open in usual.
Preferably, the MOS switch unit include MOS switch M2, and one end connect with MOS switch M2 and the other end and
Connected electric discharge activate switch S1 of one polar end of Li-ion batteries piles；Electric discharge activate switch S1 is to be given by electrical equipment
The electronic switch of electric signal control.
Preferably, the Li-ion Battery Protective Chip of the discharge prevention unit is the lithium ion battery guarantor of common negative pole structure
Shield chip；D.C. contactor K2 series windings are connected between the positive terminal P+ of electrical equipment and the positive terminal B+ of Li-ion batteries piles；Touch
Originator VM is connected with the positive terminal P+ of electrical equipment；Driving coil L2, MOS switch M2 and electric discharge activate switch S1 series winding are connected to lithium
Between the positive terminal B+ and negative pole end B- of ion battery group.
Preferably, the MOS switch M2 is PMOS；The grid of MOS switch M2 is connected with discharge control terminal DO, and MOS is opened
The source electrode for closing M2 is connected with driving coil L2, and the drain electrode of MOS switch M2 is connected with electric discharge activate switch S1 one end, and electric discharge startup is opened
Close the S1 other ends to be connected with the negative pole end B- of Li-ion batteries piles.
Preferably, the Li-ion Battery Protective Chip of the discharge prevention unit is the lithium ion battery guarantor of common anode structure
Shield chip；D.C. contactor K2 series winding be connected to the negative pole end P- of electrical equipment and Li-ion batteries piles negative pole end B- it
Between；Triggering end VM is connected with the negative pole end P- of electrical equipment；Driving coil L2, MOS switch M2 and electric discharge activate switch S1 series winding
It is connected between the positive terminal B+ of Li-ion batteries piles and negative pole end B-.
Preferably, the MOS switch M2 is NMOS tube；The grid of MOS switch M2 is connected with discharge control terminal DO, and MOS is opened
The source electrode for closing M2 is connected with electric discharge activate switch S1, and the drain electrode of MOS switch M2 is connected with driving coil L2；Electric discharge activate switch S1
The other end is connected with the negative pole end B- of Li-ion batteries piles.
According to another aspect of the present utility model, there is provided a kind of lithium ion battery discharge system, including Li-ion batteries piles,
And above-mentioned lithium ion battery discharge protection circuit, the lithium ion battery discharge protection circuit is arranged on Li-ion batteries piles
Together.
Implement the technical scheme of the utility model lithium ion battery discharge protection circuit, have the advantage that or beneficial effect
Really：The discharge prevention unit of the utility model lithium ion battery discharge protection circuit carries out data and adopts in real time to Li-ion batteries piles
Collect and judge relatively and export discharge control signal, when overdischarge abnormal conditions occur in Li-ion batteries piles, output electric discharge is different
Normal discharge control signal, MOS switch unit disconnects or turns on according to the discharge control signal control D.C. contactor unit
Discharge loop to Li-ion batteries piles, plays a part of to protect Li-ion batteries piles, because D.C. contactor can be by very
Big operating current, thus this circuit is applied to the lithium ion battery discharge system of more than hundred amperes heavy-current discharges.
Description of the drawings
In order to be illustrated more clearly that the technical scheme of the utility model embodiment, below will be to wanting needed for embodiment description
The accompanying drawing for using is briefly described, it is therefore apparent that drawings in the following description are only some embodiments of the present utility model,
For those of ordinary skill in the art, on the premise of not paying creative work, can be with according to these accompanying drawings acquisitions
Other accompanying drawings, in accompanying drawing：
Fig. 1 is the circuit diagram of the utility model lithium ion battery discharge protection circuit first embodiment；
Fig. 2 is the circuit diagram of the utility model lithium ion battery discharge protection circuit second embodiment；
Fig. 3 is the circuit diagram of the utility model lithium ion battery discharge protection circuit 3rd embodiment.
Specific embodiment
In order that the purpose of this utility model, technical scheme and advantage become more apparent, what is will be described below is various
Embodiment will refer to corresponding accompanying drawing, and these accompanying drawings constitute a part for embodiment, which describe and realize that this practicality is new
The various embodiments that type may be adopted.It should be appreciated that it is also possible to use other embodiments, or embodiment enumerated herein is carried out
Circuit and modification functionally, without departing from scope and spirit of the present utility model.
The utility model provides the various embodiments of lithium ion battery discharge protection circuit, and embodiment is only a spy
Example, is not intended that the utility model just only has this several implementation.
Embodiment one：
As shown in figure 1, the utility model lithium ion battery discharge protection circuit, including being connected with Li-ion batteries piles 200
Discharge prevention unit 10, be connected to the D.C. contactor unit of the charge circuit of electrical equipment 300 and Li-ion batteries piles 200
30, and the MOS switch unit 20 being connected with discharge prevention unit 10, D.C. contactor unit 30.Wherein, discharge prevention list
10 pairs of Li-ion batteries piles 200 of unit carry out real time data acquisition and judge relatively and export discharge control signal；MOS switch unit
20 control D.C. contactor unit 30 according to discharge control signal returns to disconnect or turn on the electric discharge to Li-ion batteries piles 200
Road.
The discharge prevention unit of lithium ion battery discharge protection circuit Li-ion batteries piles are carried out real time data acquisition and
Judge relatively and export discharge control signal, when there are overdischarge abnormal conditions in Li-ion batteries piles, output electric discharge exception
Discharge control signal, MOS switch unit disconnects or turns on to lithium according to the discharge control signal control D.C. contactor unit
The discharge loop of ion battery group, plays a part of to protect Li-ion batteries piles, because D.C. contactor can pass through very big
Operating current, thus this circuit is applied to the lithium ion battery discharge system of more than hundred amperes heavy-current discharges.
The discharge prevention unit 10 of the utility model lithium ion battery discharge protection circuit includes and Li-ion batteries piles 200
Connected Li-ion Battery Protective Chip（It is not shown）And resistance capacitance element（It is not shown）, Li-ion Battery Protective Chip
Comprising for Li-ion batteries piles 200 to be carried out with the voltage input end 11 of real time data acquisition, for exporting discharge control signal
Discharge control terminal DO and triggering end VM for carrying out real time signal aquisition to electrical equipment 300.Preferably, triggering end
VM one end is connected with Li-ion Battery Protective Chip, the other end is connected to a polar end of electrical equipment 300, and triggering end VM is used
In basis to the real-time sampling data of electrical equipment 300, lithium ion battery discharge protection circuit is set to recover normal condition.Specifically
, the quantity of the cell of Li-ion batteries piles 200 can be for 1 to N number of, when the only one of which monomer of Li-ion batteries piles 200
During battery, i.e., Li-ion batteries piles 200 are lithium ion battery；When Li-ion batteries piles 200 have multiple cells, i.e., lithium from
Sub- battery pack 200 is Li-ion batteries piles.
The D.C. contactor unit 30 of the utility model lithium ion battery discharge protection circuit is connected to electricity consumption and sets including series winding
For 300 and the D.C. contactor K2 comprising driving coil L2 of the discharge loop of Li-ion batteries piles 200；Driving coil L2
One end is connected with MOS switch unit 20, and the other end of driving coil L2 is connected with the same polar end of Li-ion batteries piles 200.
D.C. contactor K2 is D.C. contactor open in usual.
Specifically, the MOS switch unit 20 of the utility model lithium ion battery discharge protection circuit includes MOS switch M2,
And the electric discharge activate switch that one end is connected with MOS switch M2 and the other end is connected with a polar end of Li-ion batteries piles 200
S1.Preferably, electric discharge activate switch S1 is the electronic switch that electric signal control is given by electrical equipment（As automatic MOS is opened
Close）, or one by the manually operated electric discharge activate switch of user（Such as the electric discharge activate switch of automobile starting power supply）Deng.
The discharge prevention unit 10 of the utility model lithium ion battery discharge protection circuit adopts different lithium ion batteries
Protection chip so that the utility model has entirely different circuit connection structure, specifically, Li-ion Battery Protective Chip can be with
The Li-ion Battery Protective Chip of Li-ion Battery Protective Chip or common anode structure for common negative pole structure.
Embodiment two：
As shown in Fig. 2 in the present embodiment lithium ion battery discharge protection circuit, the lithium-ion electric of discharge prevention unit 10
Pond protection chip 11 is the Li-ion Battery Protective Chip of negative pole structure altogether, and now, the MOS switch M2 of MOS switch unit 20 is
PMOS；Its corresponding lithium ion battery discharge protection circuit is specially：Discharge prevention unit 10 is connected to Li-ion batteries piles
Between 200 positive terminal B+ and negative pole end B-, D.C. contactor unit 30 be connected to the positive terminal P+ and lithium of electrical equipment 300 from
Between the positive terminal B+ of sub- battery pack 200, MOS switch unit 20 is homogeneous with discharge prevention unit 10, D.C. contactor unit 30
Even.Wherein, discharge prevention unit 10 carries out data real-time sampling to Li-ion batteries piles 200 and judges relatively and export electric discharge control
Signal processed；MOS switch unit 20 disconnected according to discharge control signal control D.C. contactor unit 30 or turn on to lithium from
The discharge loop of sub- battery pack 200.
In the utility model lithium ion battery discharge protection circuit, the D.C. contactor K2 strings of D.C. contactor unit 30
It is connected between the positive terminal P+ of electrical equipment 300 and the positive terminal B+ of Li-ion batteries piles 200；The triggering end VM other end and use
The positive terminal P+ of electric equipment 300 is connected；Driving coil L2, MOS switch M2 and electric discharge activate switch S1 series winding are connected to lithium-ion electric
Between the positive terminal B+ and negative pole end B- of pond group 200.The grid of MOS switch M2 is connected with discharge control terminal DO, MOS switch M2's
Source electrode is connected with driving coil L2, and the drain electrode of MOS switch M2 is connected with electric discharge activate switch S1 one end, and electric discharge activate switch S1 is another
One end is connected with the negative pole end B- of Li-ion batteries piles 200.
The utility model lithium ion battery discharge protection circuit, when electrical equipment is started, i.e., by activate switch of discharging
S1 star t-up discharge circuits, electric discharge activate switch S1 is the electronic switch that electric signal control is given by electrical equipment（Such as automatic MOS
Switch）, or one by the manually operated electric discharge activate switch of user（Such as the electric discharge activate switch of automobile starting power supply）
Deng.When Li-ion batteries piles 200 need not discharge（When shutting down such as electrical equipment 300）, electric discharge activate switch S1 is to disconnect,
Driving coil L2 is flow through without electric current, D.C. contactor K2 is normally open, thus discharge loop is off state；Work as needs
During electric discharge, activate switch S1 of now discharging closure, electric current flows through driving coil L2, when Li-ion batteries piles are in normal condition
When, discharge control terminal DO of discharge prevention unit 10 will export low level signal, and MOS switch M2 is in the conduction state, drives line
Have electric current to flow through in circle L2, the normally opened contact of D.C. contactor K2 closure, Li-ion batteries piles 200 by D.C. contactor K2 and
The D.C. contactor K1 of normally off is discharged to electrical equipment 300；When discharge prevention unit 10 is detected in discharge process
When certain cell or whole cell voltage are less than default over voltage, high level will be exported in discharge control terminal DO
Discharge control signal, the discharge control signal control MOS switch M2 of the high level disconnects, and flows through the electric current quilt of driving coil L2
Cut-out, D.C. contactor K2 recovers normally open, and the discharge current of electrical equipment 300 is cut off, and then protects lithium-ion electric
Pond group 200 will not be damaged because of overdischarge.Flowing through the electric current of driving coil L2 in the on-state will take from Li-ion batteries piles
200, but the energy loss for causing is compared with the high current of discharge process be negligible.
The operation principle of the present embodiment is identical with embodiment one, and other same sections will not be described here, and detailed content please
Referring to embodiment one.
Embodiment three：
As shown in figure 3, in the present embodiment lithium ion battery discharge protection circuit, the lithium-ion electric of discharge prevention unit 10
Pond protection chip is the Li-ion Battery Protective Chip of common anode structure, and now, the MOS switch M2 of MOS switch unit 20 is
NMOS tube；Its corresponding lithium ion battery discharge protection circuit is specially：Discharge prevention unit 10 is connected to and lithium ion battery
D.C. contactor unit 30 is all connected between the negative pole end P- of electrical equipment 300 and the negative pole end B- of Li-ion batteries piles 200,
MOS switch unit 20 is connected with discharge prevention unit 10, D.C. contactor unit 30.Wherein, discharge prevention unit 10 is to lithium
Ion battery group 200 carries out data real-time sampling and judges relatively and export discharge control signal；MOS switch unit 20 is according to putting
Electric control signal controls D.C. contactor unit 30 to disconnect or turn on the discharge loop to Li-ion batteries piles 200.
More specifically, D.C. contactor K2 is connected to the negative pole end P- and Li-ion batteries piles 200 of electrical equipment 300
Between negative pole end B-；Triggering end VM is connected with the negative pole end P- of electrical equipment 300；Driving coil L2, MOS switch M2 and electric discharge are opened
Dynamic switch S1 series windings are connected between the positive terminal B+ of Li-ion batteries piles 200 and negative pole end B-.The grid of MOS switch M2 and electric discharge
Control end DO is connected, and the source electrode of MOS switch M2 is connected with electric discharge activate switch S1, drain electrode and driving coil L2 of MOS switch M2
It is connected；The electric discharge activate switch S1 other end is connected with the negative pole end B- of Li-ion batteries piles 200.
The utility model lithium ion battery discharge protection circuit, when electrical equipment is started, i.e., by activate switch of discharging
S1 star t-up discharge circuits, electric discharge activate switch S1 is the electronic switch that electric signal control is given by electrical equipment（Such as automatic MOS
Switch）, or one by the manually operated electric discharge activate switch of user（Such as the electric discharge activate switch of automobile starting power supply）
Deng.When Li-ion batteries piles 200 need not discharge（When shutting down such as electrical equipment 300）, electric discharge activate switch S1 is to disconnect,
Driving coil L2 is flow through without electric current, D.C. contactor K2 is normally open, thus discharge loop is off state；Work as needs
During electric discharge, activate switch S1 of now discharging closure, electric current flows through driving coil L2, when Li-ion batteries piles are in normal condition
When, discharge control terminal DO of discharge prevention unit 10 will export high level signal, and MOS switch M2 is in the conduction state, drives line
Have electric current to flow through in circle L2, the normally opened contact of D.C. contactor K2 closure, Li-ion batteries piles 200 by D.C. contactor K2 and
The D.C. contactor K1 of normally off is discharged to electrical equipment 300；When discharge prevention unit 10 is detected in discharge process
When certain monomer battery voltage is less than default over voltage, low level control of discharge will be exported in discharge control terminal DO
Signal, the low level discharge control signal control MOS switch M2 disconnects, and the electric current for flowing through driving coil L2 is cut off, direct current
Contactor K2 recovers normally open, and the discharge current of electrical equipment 300 is cut off, and then protects Li-ion batteries piles 200 not
Can damage because of overdischarge.Flowing through the electric current of driving coil L2 in the on-state will take from Li-ion batteries piles 200, but and put
The high current of electric process is compared the energy loss for causing and is negligible.
The operation principle of the present embodiment is identical with embodiment one and two, and other same sections will not be described here, interior in detail
Appearance refers to embodiment one and two.
Example IV：
The utility model additionally provides a kind of lithium ion battery discharge system embodiment, specifically includes Li-ion batteries piles
Lithium ion battery discharge protection circuit 100 in 200, and above-described embodiment, the lithium ion battery discharge protection circuit 100 sets
Formation lithium ion discharge system on Li-ion batteries piles 200 is placed in, is realized to lithium by lithium ion battery discharge protection circuit 100
The discharge prevention of ion battery group 200.
The concrete discharge process of the present embodiment and operation principle are identical with embodiment one to three, and detailed content refers to enforcement
Example one to three, other same sections will not be described here.
Preferred embodiment of the present utility model is the foregoing is only, those skilled in the art know, without departing from this
In the case of the spirit and scope of utility model, various changes or equivalent can be carried out to these features and embodiment.Separately
Outward, under teaching of the present utility model, these features and embodiment can be modified to adapt to particular situation and material
Without departing from spirit and scope of the present utility model.Therefore, the utility model is not by specific embodiment disclosed herein
Limit, fall with the embodiment in the range of claims hereof and belong to protection domain of the present utility model.
Claims (10)
1. a kind of lithium ion battery discharge protection circuit, it is characterised in that include and Li-ion batteries piles（200）Connected electric discharge
Protection location（10）, it is connected to electrical equipment（300）With the Li-ion batteries piles（200）Discharge loop D.C. contactor
Unit（30）, and with the discharge prevention unit（10）, the D.C. contactor unit（30）Connected MOS switch unit
（20）；
The discharge prevention unit（10）To the Li-ion batteries piles（200）Carry out real time data acquisition and judgement is compared and defeated
Go out discharge control signal；The MOS switch unit（20）The D.C. contactor unit is controlled according to the discharge control signal
（30）To disconnect or turn on the discharge loop.
2. lithium ion battery discharge protection circuit according to claim 1, it is characterised in that the discharge prevention unit
（10）Including with the Li-ion batteries piles（200）Connected Li-ion Battery Protective Chip and resistance capacitance element, the lithium
Ion battery protection chip is comprising for the Li-ion batteries piles（200）Carry out the voltage input end of real time data acquisition
（11）, discharge control terminal for exporting the discharge control signal（DO）And for the electrical equipment（300）Carry out
The triggering end of real time signal aquisition（VM）.
3. lithium ion battery discharge protection circuit according to claim 2, it is characterised in that the D.C. contactor unit
（30）The electrical equipment is connected to including series winding（300）With the Li-ion batteries piles（200）A polar end between include
Driving coil（L2）D.C. contactor（K2）；
The driving coil（L2）With the MOS switch unit（20）Series winding is connected to the Li-ion batteries piles（200）Positive pole
End（B+）And negative pole end（B-）Between.
4. lithium ion battery discharge protection circuit according to claim 3, it is characterised in that the D.C. contactor（K2）
For D.C. contactor open in usual.
5. lithium ion battery discharge protection circuit according to claim 3, it is characterised in that the MOS switch unit
（20）Including MOS switch（M2）, and one end and the MOS switch（M2）Series connection and the other end and the Li-ion batteries piles
（200）The connected electric discharge activate switch of a polar end（S1）；The electric discharge activate switch（S1）It is that electricity is provided by electrical equipment
The electronic switch of signal control.
6. the lithium ion battery discharge protection circuit according to any one of claim 3-5, it is characterised in that the electric discharge is protected
Shield unit（10）Li-ion Battery Protective Chip be common negative pole structure Li-ion Battery Protective Chip；
The D.C. contactor（K2）Series winding is connected to the electrical equipment（300）Positive terminal（P+）With the Li-ion batteries piles
（200）Positive terminal（B+）Between；
The triggering end（VM）With the electrical equipment（300）Positive terminal（P+）It is connected；The driving coil（L2）, it is described
MOS switch（M2）And the electric discharge activate switch（S1）Series winding is connected to the Li-ion batteries piles（200）Positive terminal（B+）With
Negative pole end（B-）Between.
7. lithium ion battery discharge protection circuit according to claim 6, it is characterised in that the MOS switch（M2）For
PMOS；The MOS switch（M2）Grid and the discharge control terminal（DO）It is connected, the MOS switch（M2）Source electrode with
The driving coil（L2）It is connected, the MOS switch（M2）Drain electrode and the electric discharge activate switch（S1）One end is connected, described
Electric discharge activate switch（S1）The other end and the Li-ion batteries piles（200）Negative pole end（B-）It is connected.
8. the lithium ion battery discharge protection circuit according to any one of claim 3-5, it is characterised in that the electric discharge is protected
Shield unit（10）Li-ion Battery Protective Chip be common anode structure Li-ion Battery Protective Chip；
The D.C. contactor（K2）Series winding is connected to the electrical equipment（300）Negative pole end（P-）With the Li-ion batteries piles
（200）Negative pole end（B-）Between；The triggering end（VM）With the electrical equipment（300）Negative pole end（P-）It is connected；It is described
Driving coil（L2）, the MOS switch（M2）And the electric discharge activate switch（S1）Series winding is connected to the Li-ion batteries piles
（200）Positive terminal（B+）And negative pole end（B-）Between.
9. lithium ion battery discharge protection circuit according to claim 8, it is characterised in that the MOS switch（M2）For
NMOS tube；The MOS switch（M2）Grid and the discharge control terminal（DO）It is connected, the MOS switch（M2）Source electrode with
The electric discharge activate switch（S1）It is connected, the MOS switch（M2）Drain electrode and the driving coil（L2）It is connected；The electric discharge
Activate switch（S1）The other end and the Li-ion batteries piles（200）Negative pole end（B-）It is connected.
10. a kind of lithium ion battery discharge system, it is characterised in that including Li-ion batteries piles（200）, and claim 1
To the lithium ion battery discharge protection circuit described in 9 any one（100）, the lithium ion battery discharge protection circuit（100）With
The Li-ion batteries piles（200）It is set together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620562223.1U CN206164118U (en) | 2016-06-12 | 2016-06-12 | Lithium ion battery discharging protecting circuit and lithium ion battery discharging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620562223.1U CN206164118U (en) | 2016-06-12 | 2016-06-12 | Lithium ion battery discharging protecting circuit and lithium ion battery discharging system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206164118U true CN206164118U (en) | 2017-05-10 |
Family
ID=58646430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620562223.1U Active CN206164118U (en) | 2016-06-12 | 2016-06-12 | Lithium ion battery discharging protecting circuit and lithium ion battery discharging system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206164118U (en) |
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2016
- 2016-06-12 CN CN201620562223.1U patent/CN206164118U/en active Active
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