CN104218541B - LiFePO4 with short-circuit protection function starts battery stagnation pressure protection device - Google Patents
LiFePO4 with short-circuit protection function starts battery stagnation pressure protection device Download PDFInfo
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- CN104218541B CN104218541B CN201410385821.1A CN201410385821A CN104218541B CN 104218541 B CN104218541 B CN 104218541B CN 201410385821 A CN201410385821 A CN 201410385821A CN 104218541 B CN104218541 B CN 104218541B
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Abstract
LiFePO4 with short-circuit protection function starts battery stagnation pressure protection device, is related to a kind of battery protecting apparatus.The plate of lithium electric protection in the market is all that, using more piece list battery core protection circuit, circuit is complicated, and wiring is complicated, high cost.The invention is characterised in that：The positive pole of ferric phosphate lithium cell group is connected with anode input, and the negative pole of ferric phosphate lithium cell group is connected with GND input；Described control panel was provided with puts control module and short circuit protection module; described mistake puts the first single-unit battery core control chip that control module is included the first voltage-stabilizing device and is connected with the first voltage-stabilizing device, and the first described voltage-stabilizing device is used to improve the first single-unit control chip control reference voltage；Described short circuit protection module is located between GND input and control panel output end to control the break-make between GND input and control panel output end.The technical program is prevented effectively from and causes to occur the situation of cell damage because of high current because of battery short circuit.
Description
Technical field
The present invention relates to a kind of battery protecting apparatus, the protection device of particularly shallow charging/discharging type LiFePO4 startup battery
。
Background technology
Motorcycle or automobile are typically equipped with electrical equipment, and electrical equipment is powered using battery, when battery is in short circuit, electricity
Flow through greatly, battery-heating amount greatly, is easily damaged, affect the service life of battery.To protect battery, on open market, lithium electricity is protected
Backplate is all that, using more piece list battery core protection circuit, circuit is complicated, and wiring is complicated, high cost.
The content of the invention
The technical problem to be solved in the present invention and the technical assignment for proposing are prior art to be improved and is improved,
LiFePO4 with short-circuit protection function is provided and starts battery stagnation pressure protection device, to reach simplified circuit, reduces cost
Purpose.For this purpose, the present invention takes technical scheme below.
LiFePO4 with short-circuit protection function starts battery stagnation pressure protection device, starts in battery and is provided with four section phosphoric acid
The battery pack that iron lithium cell is composed in series, protection device include control panel, described control panel be provided with anode input,
GND input and control panel output end, it is characterised in that：The positive pole of battery pack is connected with anode input, phosphoric acid
The negative pole of lithium iron battery group is connected with GND input；Described control panel was provided with puts control module and short-circuit protection
Module, described mistake put the first single-unit battery core control that control module is included the first voltage-stabilizing device, is connected with the first voltage-stabilizing device
Chip, the first described voltage-stabilizing device are used to improve the first single-unit battery core control chip control reference voltage；Described short circuit guarantor
Shield module is located between GND input and control panel output end to control GND input and control panel output end
Between break-make.Single-unit LiFePO4 battery core is single battery core or many battery core parallel connections, and the first voltage-stablizer shares voltage, improves the
The voltage sample scope of one single-unit battery core control chip, it is not necessary to using the control chip with high voltage sample range, reduce into
This；The technical program is protected to the total voltage of battery pack, replaces the protection to single battery, is ensureing battery pack safety
Under the premise of, circuit is simple, effective reduces cost；When battery is short-circuited, control panel output end be high voltage, short-circuit protection mould
Block cuts off path between GND input and control panel output end.It is prevented effectively from and causes to make because of high current because of battery short circuit
The situation of cell damage occurs.
As further improving and supplementing to above-mentioned technical proposal, present invention additionally comprises following additional technical feature.
Described mistake puts control module also includes the 7th MOS between GND input and control panel output end
Pipe, described short circuit protection module are connected with the grid of the 7th metal-oxide-semiconductor with the break-make of the 7th metal-oxide-semiconductor of control.
Described short circuit protection module includes the 27th resistance, the 29th resistance, the 15th triode, the 15th
Pole pipe is NPN type triode, is provided with the 27th described resistance between the base stage and emitter stage of the 15th triode, the 15th
The 29th described resistance is provided between the base stage and control panel output end of triode.It is 27th resistance, the 29th electric
Resistance point is in partial pressure.
The 30th resistance is provided between the emitter stage and control panel output end of the 15th triode.30th resistance is used for electricity
The release of energy.
Described short circuit protection module connects a monostable flipflop, output end and the short-circuit protection mould of monostable flipflop
Block is connected with the low-voltage variation function of releasing short circuit protection module.Short circuit protection module has short-circuit protection and keeps the work(for locking
Can, when short-circuit protection is without the need for keeping locking, as on startup, needs unlock so that motor smoothly can start, monostable
Trigger has the function of releasing short-circuit protection locking.
Described monostable flipflop includes the 16th triode, the 34th resistance, the 11st diode, monostable core
Piece, the 16th triode are the output pin of NPN type triode, the base stage of the 16th triode and the first single-unit battery core control chip
Electrical connection, the colelctor electrode of the 16th triode are electrically connected with the input pin of both monostables, anode input Jing the 12nd
Pole pipe, the 34th resistance are connected with the colelctor electrode of the 16th triode, the grounded emitter of the 16th triode, monostable core
The output end of piece is connected with the base stage of the 15th triode by the 11st diode.34th resistance is pull-up resistor.
The first described voltage-stabilizing device is the first Zener diode, and the voltage stabilized range of the first described Zener diode is 4
～11V；Described mistake put control module also include the first triode, the second triode, the 3rd triode, the 7th metal-oxide-semiconductor, first
Single-unit battery core control chip is sampled to assembled battery total voltage, and by the first triode, the second triode control the three or three
Pole pipe break-make, controls the break-make of the 7th metal-oxide-semiconductor by the 3rd triode, to control the output of control panel.First Zener diode into
This low, working stability, reliability, the first Zener diode make sampled voltage meet wanting into the first single-unit battery core control chip
Ask, the first single-unit battery core control chip can differentiate the working condition of battery pack, it is to avoid the overcharge conditions of battery pack occur.
The voltage detecting end of the first described single-unit battery core control chip is by the 6th resistance, the first Zener diode and electricity
Pond electrode input end electrical connection；The first described triode is NPN type triode, described the second triode, the described the 3rd
Triode is PNP type triode, and the 7th metal-oxide-semiconductor is N-channel MOS pipe；The base stage of the first triode is controlled with the first single-unit battery core
Chip is electrically connected, and the first transistor collector electrically connected with the second transistor base, the first transistor emitter and GND
Input is electrically connected；The second described transistor emitter is electrically connected with anode input, the second transistor collector with
3rd transistor base is electrically connected；3rd transistor emitter is electrically connected with the grid of the 7th metal-oxide-semiconductor, the 3rd transistor collector
Electrically connect with GND input；The source electrode of the 7th metal-oxide-semiconductor is electrically connected with GND input, the drain electrode of the 7th metal-oxide-semiconductor
Electrically connect with control panel output end；Base stage of the first single-unit battery core control chip by first resistor with the first triode is electrically connected
Connect；The 21st resistance is provided between the base stage and emitter stage of the first triode and is opened with the temperature of the 21st resistor coupled in parallel
Close, the first transistor emitter is electrically connected with GND input by second resistance；The base stage of the second described triode
3rd resistor is provided between emitter stage；It is provided between the second described transistor collector and the 3rd transistor emitter and concatenates
The 6th diode, the 5th resistance；The 4th is provided between the second described transistor collector and the 3rd transistor collector electric
Resistance；The 7th Zener diode is provided between the emitter stage and colelctor electrode of the 3rd described triode；First single-unit battery core controls core
The negative pole electric connecting terminal ground connection of piece, by the between the voltage detecting end of the first single-unit battery core control chip and negative pole electric connecting terminal
One electric capacity is electrically connected.
Described control panel is provided with and overcharges control module, it is described overcharge control module include the second voltage-stabilizing device and with
Second single-unit battery core control chip of the second voltage-stabilizing device electrical connection, the second described voltage-stabilizing device are used to improve the second single-unit electricity
Core control chip control reference voltage；The second described voltage-stabilizing device be the second Zener diode, described two pole of the second voltage stabilizing
The voltage stabilized range of pipe is 10～18V.
The described control module that overcharges also includes the 4th triode, the 6th triode, the 5th triode, the 8th metal-oxide-semiconductor；Institute
The the second single-unit battery core control chip stated is sampled to assembled battery total voltage, and passes through the 6th triode, the 4th triode control
The 5th triode break-make is made, the break-make of the 8th metal-oxide-semiconductor is controlled by the 5th triode, to control the output of control panel；Described
The voltage detecting end of two single-unit battery core control chips is electrically connected by the 7th resistance, the second Zener diode and anode input
Connect；Described the 6th triode, the 5th triode are NPN type triode, and the 4th triode is PNP type triode, the 8th MOS
Manage as N-channel MOS pipe；The base stage of the 6th triode is electrically connected with the second single-unit battery core control chip, the 6th transistor collector
It is connected with the base stage of the 4th triode by resistance R22, the 6th transistor emitter ground connection；The emitter stage of the 4th triode connects electricity
Source, the 4th transistor collector are electrically connected with the base stage of the 5th triode by resistance R20；The current collection of the 5th described triode
Pole is electrically connected with the grid of the 8th metal-oxide-semiconductor；The drain electrode of the 8th metal-oxide-semiconductor is electrically connected with GND input, the source of the 8th metal-oxide-semiconductor
Pole, the emitter stage of the 5th triode are electrically connected with control panel output end；The base stage of the 6th triode passes through the 15th resistance and the
Two single-unit battery core control chips are electrically connected, the 6th transistor emitter ground connection；Set between the base stage and emitter stage of the 5th triode
The colelctor electrode for having the 17th resistance, the 5th described triode is electrically connected with anode input by the 8th resistance, and the 5th
The 14th resistance and the 8th Zener diode with the 14th resistor coupled in parallel are provided between the emitter stage and colelctor electrode of triode；The
The negative pole electric connecting terminal ground connection of two single-unit battery core control chips, the voltage detecting end of the second single-unit battery core control chip and negative electricity
Electrically connected by the second electric capacity between connection end.
Beneficial effect：
1st, the technical program detects that to assembled battery total voltage simple structure using reliability, low cost, and takes into account electricity
The safety in utilization in pond.
2nd, realize the mistake of battery pack is put, overcharged, short-circuit protection, effectively extend the life-span of battery pack.And realize to battery
The generation of situations such as temperature control of group, control panel, reduction spontaneous combustion；Be prevented effectively from cause electricity to be made because of high current because of battery short circuit
The situation that pond is damaged occurs.
Description of the drawings
Fig. 1 is first embodiment of the invention schematic diagram.
Fig. 2 is second embodiment of the invention schematic diagram.
Fig. 3 is third embodiment of the invention schematic diagram.
Fig. 4 is fourth embodiment of the invention schematic diagram.
In figure：B+-anode input；B--GND input；P-- control panel output ends；U1- first
Single-unit battery core control chip；U2- the second single-unit battery core control chips；U7- both monostables；The first triodes of Q1-；Q2- second
Triode；The 3rd triodes of Q3-；The 4th triodes of Q4-；The 5th triodes of Q5-；The 6th triodes of Q6-；The 7th MOS of Q7-
Pipe；The 8th metal-oxide-semiconductors of Q8-；15th triode；16th triode R1- first resistors；R2- second resistances；R3- 3rd resistors；
The 4th resistance of R4-；The 5th resistance of R5-；The 6th resistance of R6-；The 7th resistance of R7-；The 8th resistance of R8-；The 14th resistance of R14-；
The 15th resistance of R15-；The 17th resistance of R17-；The 20th resistance of R20-；The 21st resistance of R21-；R27- the 27th is electric
Resistance;The 29th resistance of R29-；The 30th resistance of R30-；The 34th resistance of R34-；T1- temperature detect switch (TDS)s；The first voltage stabilizings of D4- two
Pole pipe；The second Zener diodes of D5-；The 6th diodes of D6-；The 7th Zener diodes of D7-；The 8th Zener diodes of D8-；D9-
9th diode；The tenth diodes of R10-；The 11st diodes of R12-；The first electric capacity of C1-；The second electric capacity of C2-.
Specific embodiment
Technical scheme is described in further detail below in conjunction with Figure of description.
Start battery and be provided with multiple ferric phosphate lithium cells, ferric phosphate lithium cell is connected in series to form ferric phosphate lithium cell group.
Embodiment one：
As shown in figure 1, the LiFePO4 with short-circuit protection function starts battery stagnation pressure protection device, start and set in battery
The battery pack for having four section LiFePO4 battery cores to be composed in series, protection device include control panel, and described control panel is provided with battery
Electrode input end B+, GND input B- and control panel output end P-, the positive pole and anode of ferric phosphate lithium cell group
Input B+ is connected, and the negative pole of ferric phosphate lithium cell group is connected with GND input B-；Described control panel was provided with
Control module is put, described mistake puts the first single-unit electricity that control module is included the first voltage-stabilizing device and is connected with the first voltage-stabilizing device
Core control chip U1, the first described voltage-stabilizing device are used to improve the first single-unit battery core control chip U1 control reference voltages.Institute
The first voltage-stabilizing device stated is the first Zener diode D4, and the voltage stabilized range of the first described Zener diode D4 is 4～11V.
Described mistake puts control module also including the first triode Q1, the second triode Q2, the 3rd triode Q3, the 7th metal-oxide-semiconductor Q7, the
One single-unit battery core control chip U1 samples to assembled battery total voltage, and is controlled by the first triode Q1, the second triode Q2
The 3rd triode Q3 break-makes are made, the break-make of the 7th metal-oxide-semiconductor Q7 is controlled by the 3rd triode Q3, to control the output of control panel.Institute
The voltage detecting end of the first single-unit battery core control chip U1 for stating just is passing through the 6th resistance R6, the first Zener diode D4 and battery
Pole input B+ electrical connections；The first described triode Q1 is NPN type triode, described the second triode Q2, described the
Three triode Q3 are PNP type triode, and the 7th metal-oxide-semiconductor Q7 is N-channel MOS pipe；The base stage of the first triode Q1 and the first single-unit
Battery core control chip U1 is electrically connected, and its colelctor electrode is electrically connected with the second triode Q2 base stages, and its emitter stage is input into GND
End B- electrical connections；The second described triode Q2 emitter stages are electrically connected with anode input B+, its colelctor electrode and the three or three
Pole pipe Q3 base stage is electrically connected；3rd triode Q3 emitter stages are electrically connected with the grid of the 7th metal-oxide-semiconductor Q7, the 3rd triode Q3 current collections
Pole is electrically connected with GND input B-；The source electrode of the 7th metal-oxide-semiconductor Q7 is electrically connected with GND input B-, the 7th MOS
The drain electrode of pipe Q7 is electrically connected with control panel output end P-.First single-unit battery core control chip U1 passes through first resistor R1 and the one or three
The base stage electrical connection of pole pipe Q1；The 21st resistance R21, the one or three pole are provided between the base stage and emitter stage of the first triode Q1
Pipe Q1 emitter stages are electrically connected with GND input B- by second resistance R2；The base stage of the second described triode Q2 with send out
3rd resistor R3 is provided between emitter-base bandgap grading；String is provided between the second described triode Q2 colelctor electrodes and the 3rd triode Q3 emitter stages
The 6th diode D6, the 5th resistance R5 for connecing；Between the second described triode Q2 colelctor electrodes and the 3rd triode Q3 colelctor electrodes
It is provided with the 4th resistance R4；The 7th Zener diode D7 is provided between the emitter stage and colelctor electrode of the 3rd described triode Q3；The
The negative pole electric connecting terminal ground connection of one single-unit battery core control chip U1, the voltage detecting end of the first single-unit battery core control chip U1 with it is negative
Electrically connected by the first electric capacity C1 between the electric connecting terminal of pole.
Short circuit protection module is additionally provided with described control panel, described short circuit protection module is located at GND input
Between B- and control panel output end P-；Described short circuit protection module include the 27th resistance R27, the 29th resistance R29,
15th triode Q15, the 15th triode Q15 are NPN type triode, the base stage and emitter stage of the 15th triode Q15 it
Between be provided with the 27th described resistance R27, be provided with described between the base stage and control panel output end P- of the 15th triode Q15
The 29th resistance R29；The 30th resistance is provided between the emitter stage and control panel output end P- of the 15th triode Q15
R30。
To avoid battery pack and control plate temperature too high, the temperature particularly set at metal-oxide-semiconductor is too high, and control panel is provided with temperature
Degree control module, temperature control modules include the temperature switch T1 in parallel with the 21st resistance R21.
Embodiment two：
As shown in Fig. 2 on the basis of embodiment one, be that the low pressure after realizing short circuit locking is not locked, described control
Plate is provided with monostable flipflop, and the output end of monostable flipflop is connected to release short circuit protection module with short circuit protection module
Low-voltage variation function；Described monostable flipflop include the 16th triode Q16, the 34th resistance R34, the 11st
Pole pipe D11, both monostables U7, the 16th triode Q16 be NPN type triode, the base stage and first of the 16th triode Q16
The output pin electrical connection of single-unit battery core control chip U1, the colelctor electrode of the 16th triode Q16 and the input of both monostables U7
Pin is electrically connected, the collection of the tenth diode D10 of anode input B+ Jing, the 34th resistance R34 and the 16th triode Q16
Electrode is connected, the grounded emitter of the 16th triode Q16, the output end of both monostables by the 11st diode D11 with
The base stage of the 15th triode Q15 is connected.
Embodiment three：
As shown in figure 3, on the basis of embodiment one, be realize battery pack overcharge protection, while avoid battery pack and
Control plate temperature is too high, and the temperature particularly set at metal-oxide-semiconductor is too high.Control panel is provided with and overcharges control module and temperature control mould
Block.
Described overcharges the second single-unit electricity that control module is included the second voltage-stabilizing device and electrically connected with the second voltage-stabilizing device
Core control chip U2, the second described voltage-stabilizing device are used to improve the second single-unit battery core control chip U2 control reference voltages.Institute
The second voltage-stabilizing device stated is the second Zener diode D5, and the voltage stabilized range of the second described Zener diode D5 is 10～18V.
The described control module that overcharges also includes the 4th triode Q4, the 6th triode Q6, the 5th triode Q5, the 8th metal-oxide-semiconductor Q8；Institute
The the second single-unit battery core control chip U2 for stating samples to assembled battery total voltage, and passes through the 6th triode Q6, the four or three pole
Pipe Q4 controls the 5th triode Q5 break-makes, controls the break-make of the 8th metal-oxide-semiconductor Q8 by the 5th triode Q5, to control the defeated of control panel
Go out.The voltage detecting end of the second described single-unit battery core control chip U2 by the 7th resistance R7, the second Zener diode D5 with
Anode input B+ is electrically connected；Described the 6th triode Q6, the 5th triode Q5 is NPN type triode, and the four or three
Pole pipe Q4 is PNP type triode, and the 8th metal-oxide-semiconductor Q8 is N-channel MOS pipe；The base stage of the 6th triode Q6 and the second single-unit battery core
Control chip U2 is electrically connected, and its colelctor electrode is connected with the base stage of the 4th triode Q4 by resistance, its grounded emitter；Four or three
The emitter stage of pole pipe Q4 connects power supply, and its colelctor electrode is electrically connected with the base stage of the 5th triode Q5 by resistance；Described the five or three
The colelctor electrode of pole pipe Q5 is electrically connected with the grid of the 8th metal-oxide-semiconductor Q8；The drain electrode of the 8th metal-oxide-semiconductor Q8 is electric with GND input B-
Connection, the source electrode of the 8th metal-oxide-semiconductor Q8, the emitter stage of the 5th triode Q5 are electrically connected with control panel output end P-.6th triode
The base stage of Q6 is electrically connected with the second single-unit battery core control chip U2 by the 15th resistance R15, its grounded emitter；Five or three pole
The 17th resistance R17 is provided between the base stage and emitter stage of pipe Q5, the colelctor electrode of the 5th described triode Q5 is electric by the 8th
Resistance R8 is electrically connected with anode input B+, is provided with the 14th resistance between the emitter stage and colelctor electrode of the 5th triode Q5
The R14 and eightth Zener diode D8 in parallel with the 14th resistance R14；The negative pole electrical connection of the second single-unit battery core control chip U2
End ground connection, is electrically connected by the second electric capacity C2 between the voltage detecting end of the second single-unit battery core control chip U2 and negative pole electric connecting terminal
Connect.If the 6th triode Q6 is favorably improved the sensitivity for overcharging protection.
Example IV：
As shown in figure 4, on the basis of embodiment one, be realize the mistake of battery pack put, short-circuit protection, while avoiding overcharging
And low pressure is not locked.Control panel is provided with and overcharges control module and monostable flipflop.
The course of work：
Over：First single-unit battery core control chip U1 detects assembled battery total voltage, when assembled battery total voltage is higher than
During setting value, then it is assumed that normal, now the D0 mouths of the first single-unit battery core control chip U1 export high level, and the first triode Q1 is opened
Logical, the second triode Q2 is open-minded, and the 3rd opens pole pipe closing, and the 7th metal-oxide-semiconductor Q7 is open-minded.When assembled battery total voltage is less than setting value
When, then it is assumed that cross and put, now, the D0 mouths output low level of the first single-unit battery core control chip U1, the first triode Q1 are closed, the
Two triode Q2 are closed, and the 3rd triode Q3 is open-minded, and the 7th metal-oxide-semiconductor Q7 is closed.Reach protection battery over-discharge function.
Additives for overcharge protection：Second single-unit battery core control chip U2 detects assembled battery total voltage, when assembled battery total voltage is less than
During setting value, then it is assumed that normal, now, the C0 mouths output low level of the second single-unit battery core control chip U2, the 6th triode Q6
Close, the 4th triode Q4 is closed, the 5th triode Q5 is closed, the 8th metal-oxide-semiconductor Q8 is open-minded.When assembled battery total voltage is higher than to set
During definite value, then it is assumed that overcharge, the D0 mouths output high level of the second single-unit battery core control chip U2, the 6th triode Q6 are open-minded, the
Four triode Q4 are open-minded, and the 5th triode Q5 is open-minded, and the 8th metal-oxide-semiconductor Q8 is closed.Reach protection over-charging of battery Electricity Functional.
Temperature protection：The battery temperature and control panel power MOS pipe temperature of inside battery are detected by temperature detect switch (TDS) T1, works as temperature
When degree is less than setting value, temperature detect switch (TDS) T1 closures, the first triode Q1 are closed, and the second triode Q2 is closed, the 3rd triode Q3
Open-minded, the 7th metal-oxide-semiconductor Q7 is closed, and is forbidden to charging, discharging electric batteries in battery and too high protection plate temperature.
Short-circuit protection：When battery operated normal, control panel output end P- be low level, the base of the 15th triode Q15
Extremely low level, the 15th triode Q15 are closed, and the 15th triode Q15 colelctor electrodes are connected with the grid of the 7th metal-oxide-semiconductor Q7,
15th triode Q15 does not affect the 7th metal-oxide-semiconductor working condition.When battery short circuit, control panel output end P- is high level, is made
15th triode Q15 is opened, and drags down the level of the 15th triode Q15 colelctor electrodes, the 15th triode Q15 colelctor electrodes and the
The grid of seven metal-oxide-semiconductor Q7 is connected, and closes the 7th metal-oxide-semiconductor Q7, and GND input B- is to control panel output end P- for shut-off
Path.
Low-voltage variation：During low-voltage variation, the first single-unit battery core control chip U1 delivery outlets D0 be low level, the 16th pole
Pipe Q16 is off state, and the 6th input pin of both monostables U7 is high level, it is impossible to trigger both monostables U7, monostable
Path between 11st output pin and the 15th triode Q15 base stages of state chip U7 is disconnected by the 11st diode D11, single
Steady state trigger does not produce impact to the working condition of the 15th triode Q15.When low-voltage variation is released, the first single-unit battery core
Control chip U1 delivery outlets D0 exports high level rising edge, and the 16th triode Q16 is in the conduction state, both monostables U7's
6th input pin triggers both monostables U7, makes the tenth of both monostables U7 the to produce high level to low level trailing edge
One output pin exports low level, drags down the base voltage of the 15th triode Q15, closes the 15th triode Q15, and the 15th
Triode Q15 does not affect the 7th metal-oxide-semiconductor working condition, to release low-voltage variation.
It is the present invention that the LiFePO4 with short-circuit protection function shown in figure 1 above -4 starts battery stagnation pressure protection device
Specific embodiment, embodied substantive distinguishing features of the present invention and progress, can be according to actual use needs, the present invention's
Under enlightenment, carry out the equivalent modifications of the aspects such as shape, structure to which, this programme protection domain row.
Claims (8)
1. the LiFePO4 with short-circuit protection function starts battery stagnation pressure protection device, starts in battery and is provided with four section ferric phosphates
The battery pack that lithium cell is composed in series, protection device include control panel, and described control panel is provided with anode input（B
+）, GND input（B-）And control panel output end（P-）, it is characterised in that：The positive pole of battery pack is input into anode
End（B+）It is connected, negative pole and the GND input of ferric phosphate lithium cell group（B-）It is connected；Described control panel was provided with
Control module and short circuit protection module are put, described mistake puts control module includes the first voltage-stabilizing device with the first voltage-stabilizing device phase
The first single-unit battery core control chip even（U1）, the first described voltage-stabilizing device is for the first single-unit battery core control chip of raising
（U1）Control reference voltage；Described short circuit protection module is located at GND input（B-）With control panel output end（P-）It
Between controlling GND input（B-）With control panel output end（P-）Between break-make；Described mistake is put control module and is also wrapped
Include positioned at GND input（B-）With control panel output end（P-）Between the 7th metal-oxide-semiconductor（Q7）, described short-circuit protection
Module and the 7th metal-oxide-semiconductor（Q7）Grid be connected controlling the 7th metal-oxide-semiconductor（Q7）Break-make；Described short circuit protection module includes
27th resistance（R27）, the 29th resistance（R29）, the 15th triode（Q15）, the 15th triode（Q15）For NPN
Type triode, the 15th triode（Q15）Base stage and emitter stage between be provided with the 27th described resistance（R27）, the tenth
Five triodes（Q15）Base stage and control panel output end（P-）Between be provided with the 29th described resistance（R29）；Described
15 triodes（Q15）Colelctor electrode and the 7th metal-oxide-semiconductor（Q7）Grid be connected；7th metal-oxide-semiconductor（Q7）Source electrode and battery bear
Pole input（B-）Electrical connection, the 7th metal-oxide-semiconductor（Q7）Drain electrode and control panel output end（P-）Electrical connection.
2. the LiFePO4 with short-circuit protection function according to claim 1 starts battery stagnation pressure protection device, and which is special
Levy and be：15th triode（Q15）Emitter stage and control panel output end（P-）Between be provided with the 30th resistance（R30）.
3. the LiFePO4 with short-circuit protection function according to claim 1 starts battery stagnation pressure protection device, and which is special
Levy and be：Described short circuit protection module connects a monostable flipflop, output end and the short-circuit protection mould of monostable flipflop
Block is connected with the low-voltage variation function of releasing short circuit protection module.
4. the LiFePO4 with short-circuit protection function according to claim 3 starts battery stagnation pressure protection device, and which is special
Levy and be：Described monostable flipflop includes the 16th triode（Q16）, the 34th resistance（R34）, the 11st diode
（D11）, both monostables（U7）, the 16th triode（Q16）For NPN type triode, the 16th triode（Q16）Base stage with
First single-unit battery core control chip（U1）Output pin electrical connection, the 16th triode（Q16）Colelctor electrode and both monostables
（U7）Input pin electrical connection, anode input（B+）The tenth diodes of Jing（D10）, the 34th resistance（R34）With
16 triodes（Q16）Colelctor electrode be connected, the 16th triode（Q16）Grounded emitter, the output end of both monostables
By the 11st diode（D11）With the 15th triode（Q15）Base stage be connected.
5. the LiFePO4 with short-circuit protection function according to claim 1-4 any claim starts battery stagnation pressure
Protection device, it is characterised in that：The first described voltage-stabilizing device is the first Zener diode（D4）, described two pole of the first voltage stabilizing
Pipe（D4）Voltage stabilized range be 4～11V；Described mistake puts control module also includes the first triode（Q1）, the second triode
（Q2）, the 3rd triode（Q3）, the first single-unit battery core control chip（U1）Assembled battery total voltage is sampled, and passes through first
Triode（Q1）, the second triode（Q2）Control the 3rd triode（Q3）Break-make, by the 3rd triode（Q3）Control the 7th metal-oxide-semiconductor
（Q7）Break-make, to control the output of control panel.
6. the LiFePO4 with short-circuit protection function according to claim 5 starts battery stagnation pressure protection device, and which is special
Levy and be：The first described single-unit battery core control chip（U1）Voltage detecting end pass through the 6th resistance（R6）, the first voltage stabilizing two
Pole pipe（D4）With anode input（B+）Electrical connection；The first described triode（Q1）For NPN type triode, described
Two triodes（Q2）, described 3rd triode（Q3）For PNP type triode, the 7th metal-oxide-semiconductor（Q7）For N-channel MOS pipe；First
Triode（Q1）Base stage and the first single-unit battery core control chip（U1）Electrical connection, the first triode（Q1）Colelctor electrode and the two or three
Pole pipe（Q2）Base stage is electrically connected, the first triode（Q1）Emitter stage and GND input（B-）Electrical connection；Described second
Triode（Q2）Emitter stage and anode input（B+）Electrical connection, the second triode（Q2）Colelctor electrode and the 3rd triode
（Q3）Base stage is electrically connected；3rd triode（Q3）Emitter stage and the 7th metal-oxide-semiconductor（Q7）Grid electrical connection, the 3rd triode（Q3）
Colelctor electrode and GND input（B-）Electrical connection；First single-unit battery core control chip（U1）By first resistor（R1）With
One triode（Q1）Base stage electrical connection；First triode（Q1）Base stage and emitter stage between be provided with the 21st resistance
（R21）And with the 21st resistance（R21）Temperature switch in parallel（T1）, the first triode（Q1）Emitter stage passes through second resistance
（R2）With GND input（B-）Electrical connection；The second described triode（Q2）Base stage and emitter stage between be provided with the 3rd
Resistance（R3）；The second described triode（Q2）Colelctor electrode and the 3rd triode（Q3）The 6th 2 of concatenation the is provided between emitter stage
Pole pipe（D6）, the 5th resistance（R5）；The second described triode（Q2）Colelctor electrode and the 3rd triode（Q3）Set between colelctor electrode
There is the 4th resistance（R4）；The 3rd described triode（Q3）Emitter stage and colelctor electrode between be provided with the 7th Zener diode
（D7）；First single-unit battery core control chip（U1）Negative pole electric connecting terminal ground connection, the first single-unit battery core control chip（U1）Electricity
Pass through the first electric capacity between pressure test side and negative pole electric connecting terminal（C1）Electrical connection.
7. the LiFePO4 with short-circuit protection function according to claim 1-4 any claim starts battery stagnation pressure
Protection device, it is characterised in that：Described control panel is provided with and overcharges control module, and the described control module that overcharges includes second
Voltage-stabilizing device and the second single-unit battery core control chip electrically connected with the second voltage-stabilizing device（U2）, described the second voltage-stabilizing device uses
In the second single-unit battery core control chip of raising（U2）Control reference voltage；The second described voltage-stabilizing device is the second Zener diode
（D5）, described the second Zener diode（D5）Voltage stabilized range be 10～18V.
8. the LiFePO4 with short-circuit protection function according to claim 7 starts battery stagnation pressure protection device, and which is special
Levy and be：The described control module that overcharges also includes the 4th triode（Q4）, the 6th triode（Q6）, the 5th triode（Q5）、
8th metal-oxide-semiconductor（Q8）；The second described single-unit battery core control chip（U2）Assembled battery total voltage is sampled, and passes through the 6th
Triode（Q6）, the 4th triode（Q4）Control the 5th triode（Q5）Break-make, by the 5th triode（Q5）Control the 8th metal-oxide-semiconductor
（Q8）Break-make, to control the output of control panel；The second described single-unit battery core control chip（U2）Voltage detecting end pass through
7th resistance（R7）, the second Zener diode（D5）With anode input（B+）Electrical connection；The 6th described triode
（Q6）, the 5th triode（Q5）It is NPN type triode, the 4th triode（Q4）For PNP type triode, the 8th metal-oxide-semiconductor（Q8）
For N-channel MOS pipe；6th triode（Q6）Base stage and the second single-unit battery core control chip（U2）Electrical connection, the 6th triode
（Q6）Colelctor electrode passes through resistance R22 and the 4th triode（Q4）Base stage be connected, the 6th triode（Q6）Grounded emitter；4th
Triode（Q4）Emitter stage connect power supply, the 4th triode（Q4）Colelctor electrode passes through resistance R20 and the 5th triode（Q5）Base
Pole electrically connects；The 5th described triode（Q5）Colelctor electrode and the 8th metal-oxide-semiconductor（Q8）Grid electrical connection；8th metal-oxide-semiconductor
（Q8）Drain electrode and GND input（B-）Electrical connection, the 8th metal-oxide-semiconductor（Q8）Source electrode, the 5th triode（Q5）Transmitting
Pole and control panel output end（P-）Electrical connection；6th triode（Q6）Base stage pass through the 15th resistance（R15）With the second single-unit
Battery core control chip（U2）Electrical connection, the 6th triode（Q6）Grounded emitter；5th triode（Q5）Base stage and emitter stage
Between be provided with the 17th resistance（R17）, described the 5th triode（Q5）Colelctor electrode pass through the 8th resistance（R8）With battery just
Pole input（B+）Electrical connection, the 5th triode（Q5）Emitter stage and colelctor electrode between be provided with the 14th resistance（R14）And with
14th resistance（R14）8th Zener diode in parallel（D8）；Second single-unit battery core control chip（U2）Negative pole electrical connection
End ground connection, the second single-unit battery core control chip（U2）Voltage detecting end and negative pole electric connecting terminal between pass through the second electric capacity（C2）
Electrical connection.
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| CN201410385821.1A CN104218541B (en) | 2014-08-07 | 2014-08-07 | LiFePO4 with short-circuit protection function starts battery stagnation pressure protection device |
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| CN107221977A (en) * | 2017-06-12 | 2017-09-29 | 汕头市毅和电源科技有限公司 | A kind of application process of iron lithium phosphate battery and its protection circuit plate |
| CN109560584B (en) * | 2018-12-07 | 2022-04-15 | 浙江千喜新能源有限公司 | Lithium battery pack charging and discharging protection circuit and power module |
| CN111740382B (en) * | 2020-05-18 | 2023-02-03 | 欣旺达电子股份有限公司 | Load detection protection circuit |
| CN112787044A (en) * | 2020-07-31 | 2021-05-11 | 东莞市中准能源科技有限公司 | Six-cell series battery pack |
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