CN207368709U - A kind of battery 0V chargings and battery protection system - Google Patents
A kind of battery 0V chargings and battery protection system Download PDFInfo
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- CN207368709U CN207368709U CN201721401986.9U CN201721401986U CN207368709U CN 207368709 U CN207368709 U CN 207368709U CN 201721401986 U CN201721401986 U CN 201721401986U CN 207368709 U CN207368709 U CN 207368709U
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Abstract
The utility model discloses a kind of battery 0V chargings and battery protection system, including：Battery pack, it is made of some single batteries, for subordinate's circuit power supply；Voltage detecting circuit, it is set to some MCU chips and its peripheral circuit, the MCU chip is used for adopting collection the overcharging of lithium battery, overdischarge, the detection of overcurrent, 0V voltages, and gives the electric signal output of the overcharging of the lithium battery collected, overdischarge, overcurrent to subordinate's circuit；The utility model have overcharge, overcurrent, cross put, the automatic detection of short circuit and protection, the advantages of battery 0V charges, and there is extensive production and application value in battery protection technical field.
Description
Technical field
It the utility model is related to li-ion cell protection technical field, more particularly to battery 0V chargings and battery protection system
System.
Background technology
Battery pack is powered for equipment, since lithium battery also has some shortcomings in itself, requires harshness to charge and discharge, charging voltage is not
Can be excessive, discharge voltage cannot be too low, and battery core exists from factors such as power consumptions, when battery pack for a long time without using or some low costs
The battery over-discharge caused by reason such as lithium battery consumable TV university itself is even changed into the phenomenon of no-voltage, and battery pack is at this time not
Damage truly, but traditional battery pack is that can not carry out normal discharge and recharge with charger when there is such case
, therefore design and improve this new application circuit, be used for realization to because long-time without using and caused by can not use charger into
The battery of row charging can be charged normal and allow the normal circuit of battery recovery.
Utility model content
The purpose of this utility model is that update and improve the prior art, there is provided one kind can be achieved to carry out charge and discharge to battery pack
Electric control, while there is additives for overcharge protection, over, overcurrent protection, short-circuit protection, battery 0V voltage rechargeable functions
Battery protection system.
The technical solution of the utility model is as follows：A kind of battery 0V chargings and battery protection system, it is characterised in that bag
Include：
Battery pack, it is made of some single batteries, for subordinate's circuit power supply；
Voltage detecting circuit, it is set to some MCU chips and its peripheral circuit, and the MCU chip is used for adopting collection lithium electricity
The overcharging of pond, overdischarge, the detection of overcurrent, 0V voltages, and by the overcharging of the lithium battery collected, overdischarge, overcurrent
Electric signal output gives subordinate's circuit；
Battery protecting circuit, the battery protecting circuit include overcharge protection circuit, over-discharge protection circuit, overcurrent protection
Circuit；The overcharge protection circuit, over-discharge protection circuit, current foldback circuit are corresponding to be received, corresponding voltage detecting electricity
Road output electric signal, the overcharge protection circuit, over-discharge protection circuit, current foldback circuit respectively, to battery pack
Overcharge the control of protection, over, overcurrent protection；
Battery 0V charging circuits, the battery 0V charging circuits include some switching tubes, multiple pressure limiting resistance are formed, described
When battery 0V charging circuits are in the overdischarge signal that voltage detecting circuit exports, through the electricity outside the connection of corresponding pressure limiting resistance
Source, and corresponding switch controlled circuit charge to corresponding battery.
Preferably, each MCU chip is set to battery protection chip DW01, and the battery protection chip DW01 is set to
1-15, and each battery protection chip DW01 is equipped with 1 foot, 2 feet, 3 feet, 5 feet, 6 feet, the battery protection chip DW01 is equal
1 foot be overdischarge discharge signal output terminal, 2 feet are overcurrent test side, 3 feet are overcharge signal output terminal, 5 feet are battery
Voltage detecting end and power end, 6 feet are power supply negative terminal.
Preferably, 1 foot of each battery protection chip DW01 is all connected with corresponding over-discharge protection circuit, and 2 feet connect
Corresponding over-discharge protection circuit and overcharge protection circuit are connect, 3 feet are all connected with corresponding overcharge protection circuit, and 5 feet are mutually through
One resistance is connected with corresponding single battery, and 5 feet are grounded through the first capacitance and 6 feet；Wherein the first battery protection chip
2 feet of DW01 connect second resistance, connect current foldback circuit respectively, and 2 feet of the battery protection chip DW01 connect through second resistance
Ground.
Preferably, the overcharge protection circuit includes some first signal circuits, first switch circuit, charge control
Circuit, every one first signal circuit receive the overcharge signal of corresponding battery protection chip DW01 outputs, and through opening
The closing on powered-down road or opening, control charging control circuit charge to lithium battery.
Preferably, every one first signal circuit is set to the first triode；First switch circuit is set to the two or three
Pole pipe, the 3rd triode；Charging control circuit is set to the first charger pillar, the second charger pillar, first charger
Pillar, the second protection pipe are set to MOSFET pipes；Every one first triode is common-collector circuit, and described every one first
The collector of triode is all connected with the emitter of the second triode, then passes through the collector of the second triode and the 3rd triode
Base stage connects, and the emitter through the 3rd triode is connected with the source electrode of the first charger pillar, the second charger pillar, described
The base stage of every one first triode is connected with 3 feet of corresponding battery protection chip DW01, the hair of every one first triode
Emitter-base bandgap grading is connected with corresponding lithium battery, 2 feet of battery protection chip DW01 and over-discharge protection circuit；3rd triode
Collector be connected with the grid of the first charger pillar, the second charger pillar.
Preferably, the over-discharge protection circuit includes some secondary signal transmission circuits, second switch circuit, overcharges control
Circuit processed, each secondary signal transmission circuit receive, the overcharge signal of corresponding battery protection chip DW01 outputs, and pass through
The closing of on-off circuit or opening, make the electric discharge of over-discharge protection circuit control battery pack.
Preferably, each secondary signal transmission circuit is set to the 4th triode；The second switch circuit includes
The half bridgepush pull drive circuit of 5th triode, the 6th triode and the 7th triode composition；The control circuit that overcharges also is set
For the first charger pillar, the second charger pillar, the 4th triode is also common-collector circuit, and each collector passes through
The base stage of 5th triode, the collector of the 5th triode are connected with the base stage of the 6th triode and the 7th triode, Yi Jijing
The collector of first diode and the 3rd triode is connected with the grid of the first charger pillar, the second charger pillar, described
The base stage of 4th triode is connected with 1 foot of battery protection chip DW01, the emitter of every one the 4th triode with
The emitter connection of corresponding lithium battery, 2 feet of battery protection chip and the first triode.
Preferably, the current foldback circuit includes；The overcurrent protection pipe, the 3rd signal circuit；The overcurrent
Protection circuit is set to the 3rd overcurrent protection pipe, the 4th overcurrent protection pipe, the 3rd overcurrent protection pipe, the 4th overcurrent protection Guan Jun
Also MOSFET pipes are set to, the 3rd signal circuit is set to the 5th MOSFET pipes；The 3rd overcurrent protection pipe, the 4th mistake
The drain electrode of stream protection pipe, the 5th MOSFET pipes homogeneously connects, and is grounded through 3rd resistor；The 3rd overcurrent protection pipe,
Emitter of the grid of four overcurrent protection pipes with the 6th triode and the 7th triode is connected；The 3rd overcurrent protection pipe,
The source electrode ground connection of 4th overcurrent protection pipe, the source electrode of the 5th MOSFET pipes is through the 4th resistance and corresponding battery protection chip
The 2 feet connection of DW01, the grid of the 5th MOSFET pipes is grounded through the second diode, and is connected with the 6th transistor base；It is described
The drain electrode of 3rd overcurrent protection pipe, the 4th overcurrent protection pipe is connected through the 5th resistance with the base stage of the 8th triode, passes through
The collector of eight triodes is connected composition short-circuit protection circuit with the 6th transistor base.
Preferably, some switching tubes in the battery 0V charging circuits are set to the 9th triode, the tenth triode, described
Multiple pressure limiting resistance are set to the first divider resistance, the second divider resistance, the 3rd divider resistance, the 4th divider resistance；Described 9th
The base stage of triode is grounded through the first divider resistance, and the base stage of the 9th triode connects anode through the second divider resistance,
Base stage of the emitter through the tenth triode of 9th triode, and the collector output connection second for passing through the tenth triode
Transistor base, through the second transistor collector export the 3rd triode base stage, the transmitting collection through the 3rd triode export to
The source electrode of first charger pillar and the second charger pillar, collector through the 3rd triode connect the first charger pillar and
The grid of second charger pillar, second divider resistance are connected in parallel between the collector and emitter of the 3rd triode, the
Three divider resistances connect the 3rd transistor collector and the cathode of lithium battery connects.
Using the above scheme, the utility model beneficial effect is：
(1) by using single lithium battery privacy protection chip, the mode for carrying out electrical combination designs, of low cost, property
Can be reliable, pass through overcharge of the peripheral auxiliary circuits realization to battery pack, overdischarge, overcurrent protection, short-circuit protection, battery 0V
The functions such as voltage is chargeable；
(2) power supply of MOSFET tube drive circuits is by the way of common collector type emitter follower, by the 4th batteries electricity
Pressure does reference voltage, and assembled battery total voltage, by emitter follower voltage close to benchmark, has at the same time as driving voltage input source
There is Current amplifier effect to realize low cost and the driving power suitable with special high-pressure type LDO function of supplying power, reliable guarantee power
The raster data model ability of MOSFET, while can realize that the consumption electric current of drive circuit is taken from total battery pack circuit, ensure battery
The uniformity of group consumption electric current per batteries；
(3) it is cost-effective by the use of MOSFET internal resistances as current detection sensor without electric current dedicated test resistance, together
When the problem of dedicated test resistance can generate heat when can effectively reduce heavy-current discharge, more efficiently protection lithium battery avoids high temperature
Damage；
(4) under-voltage protection, overcurrent protection, short-circuit protection delay can be adjusted arbitrarily, avoid making for different controller parameters
Occur power-off suddenly because protection delay is too short during and the problem of dangerous occur；
(5) use etc. divides pressing mold type to gather cell voltage mode, and the consumption current protection of every a string of batteries is consistent, effectively protects
Demonstrate,prove the uniformity of cell voltage；
(6) combined using relatively cheap single-unit protection chip with transistor and realize circuit function, it is of low cost, and
Production stock is simple, stablizes for the source of goods, price is extremely low, is not in the problem of manufacturing enterprise's warehousing pressure is big.
Brief description of the drawings
Fig. 1 is the circuitry block schematic diagram of the utility model；
Fig. 2 is the overcharging of lithium battery, overcurrent, the detection of overdischarge road and signal circuit schematic diagram of the utility model；
Fig. 3 is the overcharging of lithium battery of the utility model, overcurrent, overdischarge road control principle drawing.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
As shown in Figure 1 to Figure 3；A kind of battery 0V voltages charge and battery protection system, the electricity in An, A2 in circuit diagram
Road is the circuit repeated in A1；B1 to B9 is single lithium battery, B+ is total single lithium battery cathode, the single-unit of specific embodiment
The cathode of lithium battery is by taking B+ as an example；U1 to U15 is battery protection chip DW01, embodiment with battery protection chip DW01U15,
Exemplified by battery protection chip DW01U14, the 4th triode is set to Q25, Q27, Q29 to Q1, Q3, and embodiment is by taking Q29 as an example, and first
Triode is set to Q26, Q28, Q30 to Q2, Q4, and embodiment is by taking Q30 as an example；Specifically include：
Battery pack 1, it is made of some single batteries, for being set to subordinate's circuit power supply, the cathode of the battery pack 1
B+, the anode of battery pack 1 is J1；
Voltage detecting circuit 2, it is set to some MCU chips and its peripheral circuit, and the MCU chip is used for adopting collection lithium electricity
The overcharging of pond, overdischarge, the detection of overcurrent, 0V voltages, and by the overcharging of the lithium battery collected, overdischarge, overcurrent
Electric signal output gives subordinate's circuit；
Battery protecting circuit 3, the battery protecting circuit include overcharge protection circuit 32, over-discharge protection circuit 31, mistake
Stream protection circuit 33；The overcharge protection circuit 32, over-discharge protection circuit 31, current foldback circuit 33 are corresponding to be received, phase
The electric signal that the voltage detecting circuit 2 answered exports, the overcharge protection circuit 32, over-discharge protection circuit 31, overcurrent protection electricity
Road 33 respectively, the control for overcharge protection 32, over 31, overcurrent protection 33 to battery pack 1；
Battery 0V charging circuits, the battery 0V charging circuits 4 include some switching tubes, multiple pressure limiting resistance are formed, institute
State when battery 0V charging circuits 4 are in the battery pack overdischarge signal that voltage detecting circuit 2 exports, connect through corresponding pressure limiting resistance
External power supply 5 is connect, and corresponding switch controlled circuit charges to corresponding single battery.
Each MCU chip is set to battery protection chip DW01, the battery protection chip DW01 and is set to 1-15,
And each battery protection chip DW01 is equipped with 1 foot, 2 feet, 3 feet, 5 feet, 6 feet, 1 equal battery protection chip DW01 foot is
The voltage inspection that overdischarge discharge signal output terminal, 2 feet are overcurrent test side, 3 feet are overcharge signal output terminal, 5 feet are battery
It is power supply negative terminal to survey end and power end, 6 feet.
1 foot of each battery protection chip DW01 U14 is all connected with corresponding over-discharge protection circuit, and 2 feet are all connected with pair
The over-discharge protection circuit and overcharge protection circuit answered, 3 feet are all connected with corresponding overcharge protection circuit, and 5 feet are mutually through the first electricity
R78 and corresponding single battery B+ connections are hindered, and 5 feet are grounded through the first capacitance C5 and 6 feet；Wherein the first battery protection chip
2 feet of DW01 U15 meet second resistance R85, connect current foldback circuit respectively, the 2 feet warp of the battery protection chip DW01 U15
Second resistance R85 is grounded.
The overcharge protection circuit includes some first signal circuits, first switch circuit, charging control circuit, institute
The overcharge signal that every one first signal circuit receives corresponding battery protection chip DW01 outputs is stated, and through on-off circuit
Close or open, control charging control circuit charges to lithium battery B+.
Every one first signal circuit is set to the first triode Q30；First switch circuit is set to the second triode
Q31, the 3rd triode Q33；Charging control circuit is set to the first charger pillar QC1, the second charger pillar QC2, and described
One charger pillar QC1, the second protection pipe QC2 are set to MOSFET pipes；Every one first triode Q30 is common collector
Circuit, the collector of every one first triode Q30 is all connected with the emitter of the second triode Q31, then passes through the two or three pole
The collector of pipe Q31 is connected with the base stage of the 3rd triode Q33, and emitter and the first charger through the 3rd triode Q33
The source electrode connection of pillar QC1, the second charger pillar QC2, the base stage of every one first triode Q30 are protected with corresponding battery
Protect the 3 feet connection of chip DW01, the emitter of every one first triode Q30 with corresponding lithium battery, battery protection core
2 feet and the over-discharge protection circuit connection of piece DW01；The collector of the 3rd triode Q33 and the first charger pillar QC1,
The grid connection of second charger pillar QC2.
The over-discharge protection circuit includes some secondary signal transmission circuits, second switch circuit, overcharges control circuit,
Each secondary signal transmission circuit receives, the overcharge signal of corresponding battery protection chip DW01 outputs, and through switch electricity
The closing on road or opening, make the electric discharge of over-discharge protection circuit control battery pack.
Each secondary signal transmission circuit is set to the 4th triode Q29；The second switch circuit includes the 5th
The half bridgepush pull drive circuit of triode Q32, the 6th triode Q35 and the 7th triode Q34 compositions；It is described to overcharge control circuit
Also be set to the first charger pillar QC1, the second charger pillar QC2, the 4th triode Q29 is also common-collector circuit,
And base stage of each collector through the 5th triode Q32, the collector and the 6th triode Q35 and the 7th of the 5th triode Q32
The base stage connection of triode Q34, and collector and the first charge protection through the first diode Q30 and the 3rd triode Q33
The grid connection of pipe QC1, the second charger pillar QC2, the base stage of the 4th triode Q29 is and battery protection chip
The 1 foot connection of DW01U15, the emitter of every one the 4th triode Q29 with corresponding lithium battery, battery protection chip
The emitter of 2 feet and the first triode Q30 connect.
The current foldback circuit includes；The overcurrent protection pipe, the 3rd signal circuit；The current foldback circuit
It is set to the 3rd overcurrent protection pipe QD1, the 4th overcurrent protection pipe QD2, the 3rd overcurrent protection pipe QD1, the 4th overcurrent protection pipe
QD2 is also set to MOSFET pipes, and the 3rd signal circuit is set to the 5th MOSFET pipes Q37；3rd overcurrent protection
The drain electrode of pipe QD1, the 4th overcurrent protection pipe QD2, the 5th MOSFET pipes Q37 homogeneously connect, and are grounded through 3rd resistor R97；
The 3rd overcurrent protection pipe QD1, the 4th overcurrent protection pipe QD2 grid with the 6th triode Q35 and the 7th triode Q34
Emitter connection；The source electrode ground connection of the 3rd overcurrent protection pipe QD1, the 4th overcurrent protection pipe QD2, the 5th MOSFET
The source electrode of pipe Q37 is connected through the 4th resistance R86 with 2 feet of corresponding battery protection chip DW01U15, the 5th MOSFET pipes Q37's
Grid is grounded through the second diode, and is connected with the 6th triode Q35 base stages；The 3rd overcurrent protection pipe QD1, the 4th overcurrent
The drain electrode of protection pipe QD2 is connected through the 5th resistance R94 with the base stage of the 8th triode Q36, passes through the collection of the 8th triode Q36
Electrode is connected composition short-circuit protection with the 6th triode Q35 base stages.
Some switching tubes in the battery 0V charging circuits are set to the 9th triode Q41, the tenth triode Q38, described
Multiple pressure limiting resistance are set to the first divider resistance Rb, the second divider resistance Ra, the second divider resistance R89, the 3rd divider resistance
R63；The base stage of the 9th triode Q41 is grounded through the first divider resistance Rb, and the base stage of the 9th triode Q38 is through second
Divider resistance Ra connects anode, base stage of the emitter through the tenth triode Q38 of the 9th triode Q41, and passes through
Collector output the second transistor base Q31 of connection of ten triode Q38, the three or three is exported through the second triode Q31 collectors
The base stage of pole pipe Q33, the transmitting collection through the 3rd triode Q33 are exported to the first charger pillar QC1 and the second charger pillar
The source electrode of QC2, the grid of collector connection the first charger pillar QC1 and the second charger pillar QC2 through the 3rd triode Q33
Pole；The 3rd divider resistance R69 is connected in parallel between the collector and emitter of the 3rd triode Q33, the 4th divider resistance R63
Connect the cathode B+ connections of the 3rd triode Q33 collectors and lithium battery.
Embodiment 1：
Overcharge protection control principle：As shown in Fig. 2, when 5 feet of battery protection chip DW01 U15, lithium battery was detected
When charging voltage is excessive, corresponding every one first triode Q30 is the overtension for the output for receiving battery protection chip DW01
Signal, and overtension signal is conveyed to, corresponding second triode Q31, through the second triode Q31 electronic switches, control
The cut-off and conducting of 3rd triode Q33, when cell voltage is in normal condition, the second triode Q33 base stages are believed for low level
Number, the second triode Q33 cut-offs, when cell voltage overcharges protection voltage, give through the second triode Q31 electronic switches
The level signal of 3rd triode Q33 is high level, at this time Vbe=0.7V, the 3rd triode Q33 conductings, Vce=0.3V, the
The Vgs=0.3V of one charger pillar QC1, the second charger pillar QC2, the first charger pillar QC1 of charging, the second charger
Pillar QC2 is turned off, and terminates the charging to battery pack B+, and protection is overcharged so as to fulfill to battery pack.
Embodiment 2：
Cross prevention control principle：When 5 feet of battery protection chip DW01U15, detected that lithium battery voltage exported
When putting, corresponding every one the 4th triode Q29, be that discharge prevention control signal sends out switching tube, it passes through front end battery protection
The level signal that chip DW01 is sent out sends out overdischarge pressure protection control level signal, through the 5th triode Q32, control the seven or three
Pole pipe Q34, the 6th triode Q35 half bridgepush pull drive circuits, during battery pack normal condition, the 5th triode Q32 cut-offs are not right
Rear class plays control, and when batteries monomer battery voltage, which is crossed, to be put, the 4th triode Q29 circuits are sent out to the 5th triode Q32 and driven
Dynamic signal, the 5th triode Q32 conductings, Vce=0.3V, the 6th triode Q35 conducting, Vec=0.3V, the first charger pillar
QC1, the grid of the second charger pillar QC2 and source electrode Vgs=0.3V, the first charger pillar QC1, the second charger pillar
QC2 is turned off, and terminates the electric discharge of battery pack.
Embodiment 3：
Control principle is protected in overcurrent protection：When 2 feet of battery protection chip DW01U15, when detecting circuit overcurrent, the 3rd
Overcurrent protection pipe QD1, the 4th overcurrent protection pipe QD2 drain and voltage on source electrode Vds, are sent through the 5th MOSFET pipes Q37 corresponding
Battery protection chip DW01 crus secundas VM detects foot, and when VM pin voltages are more than 0.15V, U15 the first foot DO feet send out low electricity
It is flat, corresponding Q29 conductings, the 5th MOSFET pipes Q37, the 3rd overcurrent protection pipe QD1, the 4th overcurrent protection pipe QD2 cut-offs, Vgs<
0.9V, the 3rd overcurrent protection pipe QD1, the 4th overcurrent protection pipe QD2 cut-off, the 3rd overcurrent protection pipe QD1, the 4th overcurrent protection pipe
It is changed into high level, the 8th triode Q36 conductings in QD2 drain electrodes, the 6th triode Q35 maintains conducting, realizes positive feedback locking, because
5th MOSFET pipes Q37 ends, when avoiding the 3rd overcurrent protection pipe QD1, the 4th overcurrent protection pipe QD2 cut-off, in drain electrode
High force feed causes to damage to corresponding the 2nd feet of battery protection chip DW01U15, is protected again while playing overcurrent protection
Battery protection chip DW01U15.
Embodiment 4：
Short-circuit protection control principle：When short circuit occurs for external loading, the 3rd overcurrent protection pipe QD1, the 4th overcurrent protection
Vgs produces very high voltage on pipe QD2, when the 8th triode Q36 base voltages are more than 0.6V, the 8th triode Q36 conductings,
6th triode Q35 is turned on, the 3rd overcurrent protection pipe QD1, the 4th overcurrent protection pipe QD2 cut-off, the 3rd overcurrent protection pipe QD1,
4th overcurrent protection pipe QD2 drain electrode level is changed into high level, and the 8th triode Q36 continues conducting and realizes short-circuit protection function.
Embodiment 5：
Battery pack 0V charging control circuit operation principles：By the second divider resistance Ra, the first divider resistance Rb to battery
The partial pressure of group total voltage, when VRF voltages are less than 0.93V, that is, thinks that battery voltage is seriously too low, the 11st triode
The emitter follower output voltage that Q41 is formed is not enough to maintain the conducting of the tenth triode Q38, and the tenth triode Q38 ends, the
Two triode Q31 end, because it is serious cross low-voltage can allow U1-U15 operating voltage exception caused by logical miss export electricity
Pressure signal can not be sent to rear class, the 3rd triode Q33 cut-offs, the 4th after battery pack connects charger through the second triode Q31
Divider resistance R63, the 3rd divider resistance R69 composition fills the partial pressure of charger voltage to the first charger pillar QC1, second
The grid of electric protection pipe QC2 provides voltage with source electrode, and the first charger pillar QC1, the second charger pillar QC2 are both turned on, from
And when realizing that even if battery voltage is serious too low or be 0V, remaining to Battery pack group charges, and truly realizes 0V
Fill.
In conclusion by using the reliable single lithium battery privacy protection chip of technology maturation, electrical combination is carried out
Mode designs, of low cost, dependable performance, and overcharge to battery pack, overdischarge, excessively electric is realized by peripheral auxiliary circuits
Flow the functions such as protection, short-circuit protection, battery 0V voltages is chargeable.The utility model can be applied to various electronic and energy storage and instrument
Device equipment, has fabulous application prospect.
This circuit theory can support the application of 3 string above battery packs, and different string numbers is only different from battery voltage detection core
The cascade quantity of piece, each cascade circuit can be used as a string of independent battery detection circuits, and at present with ripe and
High volume applications need to support the battery pack of 0V charge functions in 7 strings, 10 strings, 13 strings, 14 strings, the inexpensive anti-power failure of 15 strings
In, this circuit through high volume applications template number to have AT825D, AT825E, AT825F, HY866D, HY867, HY868C, I9 etc..
The above is only the preferred embodiments of the present utility model only, is not intended to limit the present invention, all in this practicality
All any modification, equivalent and improvement made within new spirit and principle etc., should be included in the guarantor of the utility model
Within the scope of shield.
Claims (9)
1. a kind of battery 0V chargings and battery protection system, it is characterised in that including：
Battery pack, it is made of some single batteries, for subordinate's circuit power supply；
Voltage detecting circuit, it is set to some MCU chips and its peripheral circuit, and the MCU chip is used for adopting collection lithium battery
Overcharge, overdischarge, the detection of overcurrent, 0V voltages, and by the overcharging of the lithium battery collected, overdischarge, overcurrent telecommunications
Number export and to give subordinate's circuit；
Battery protecting circuit, the battery protecting circuit include overcharge protection circuit, over-discharge protection circuit, overcurrent protection electricity
Road；The corresponding corresponding voltage detecting circuit of reception of the overcharge protection circuit, over-discharge protection circuit, current foldback circuit is defeated
The electric signal gone out, the overcharge protection circuit, over-discharge protection circuit, current foldback circuit respectively carried out battery pack
Fill the control of protection, over, overcurrent protection；
Battery 0V charging circuits, the battery 0V charging circuits include some switching tubes, multiple pressure limiting resistance, and the battery 0V fills
Circuit is in the overdischarge signal that voltage detecting circuit exports, through the power supply outside the connection of corresponding pressure limiting resistance, and accordingly
Switch controlled circuit give corresponding battery charging.
2. battery 0V chargings according to claim 1 and battery protection system, it is characterised in that：Each MCU chip
It is set to battery protection chip DW01, the battery protection chip DW01 and is set to 1-15, and each battery protection chip DW01
1 foot, 2 feet, 3 feet, 5 feet, 6 feet are equipped with, 1 equal battery protection chip DW01 foot is overdischarge discharge signal output terminal, 2 feet
It is power supply for overcurrent test side, 3 feet are overcharge signal output terminal, 5 feet are battery voltage detecting end and power end, 6 feet
Negative terminal.
3. battery 0V chargings according to claim 2 and battery protection system, it is characterised in that：Each battery protection
1 foot of chip DW01 is all connected with corresponding over-discharge protection circuit, and 2 feet are all connected with corresponding over-discharge protection circuit and overcharge protection electricity
Road, 3 feet are all connected with corresponding overcharge protection circuit, and 5 feet are mutually connected through first resistor with corresponding single battery, and 5 feet
It is grounded through the first capacitance and 6 feet；2 feet of wherein the first battery protection chip DW01 connect second resistance, connect overcurrent protection respectively
Circuit, 2 feet of the battery protection chip DW01 are grounded through second resistance.
4. battery 0V chargings according to claim 3 and battery protection system, it is characterised in that：The overcharge protection circuit
Including some first signal circuits, first switch circuit, charging control circuit, every one first signal circuit connects
The overcharge signal of corresponding battery protection chip DW01 outputs, and the closing through on-off circuit or opening are received, controls charge control
Circuit charges to lithium battery.
5. battery 0V chargings according to claim 4 and battery protection system, it is characterised in that：Every one first signal
Transmission circuit is set to the first triode；First switch circuit is set to the second triode, the 3rd triode；Charging control circuit is set to
First charger pillar, the second charger pillar, the first charger pillar, the second protection pipe are set to MOSFET pipes；Institute
It is common-collector circuit to state every one first triode, and the collector of every one first triode is all connected with the second triode
Emitter, then be connected by the collector of the second triode with the base stage of the 3rd triode, and through the emitter of the 3rd triode
It is connected with the source electrode of the first charger pillar, the second charger pillar, the base stage of every one first triode and corresponding electricity
The 3 feet connection of pond protection chip DW01, the emitter of every one first triode with corresponding lithium battery, battery protection core
2 feet and the over-discharge protection circuit connection of piece DW01；The collector of 3rd triode is filled with the first charger pillar, second
The grid connection of electric protection pipe.
6. battery 0V chargings according to claim 5 and battery protection system, it is characterised in that：The over electricity
Road includes some secondary signal transmission circuits, second switch circuit, overcharges control circuit, each secondary signal transmission circuit
Receive, the overcharge signal of corresponding battery protection chip DW01 outputs, and the closing through on-off circuit or opening, protect overdischarge
Protection circuit controls the electric discharge of battery pack.
7. battery 0V chargings according to claim 6 and battery protection system, it is characterised in that：Each secondary signal
Transmission circuit is set to the 4th triode；The second switch circuit includes the 5th triode, the 6th triode and the seven or three pole
The half bridgepush pull drive circuit of pipe composition；The control circuit that overcharges also is set to the first charger pillar, the second charger pillar,
4th triode is also common-collector circuit, and base stage of each collector through the 5th triode, the collection of the 5th triode
Electrode is connected with the base stage of the 6th triode and the 7th triode, and the collector through the first diode and the 3rd triode with
The grid connection of first charger pillar, the second charger pillar, the base stage of the 4th triode is and battery protection chip
The 1 foot connection of DW01, the emitter of every one the 4th triode with corresponding lithium battery, battery protection chip 2 feet and
The emitter connection of first triode.
8. battery 0V chargings according to claim 7 and battery protection system, it is characterised in that：The current foldback circuit
Including；The overcurrent protection pipe, the 3rd signal circuit；The current foldback circuit is set to the 3rd overcurrent protection pipe, the 4th
Overcurrent protection pipe, the 3rd overcurrent protection pipe, the 4th overcurrent protection Guan Jun are also set to MOSFET pipes, the 3rd signal transmission
Circuit is set to the 5th MOSFET pipes；The 3rd overcurrent protection pipe, the 4th overcurrent protection pipe, the drain electrode of the 5th MOSFET pipes are homogeneous
Connect, and be grounded through 3rd resistor；The 3rd overcurrent protection pipe, the 4th overcurrent protection pipe grid with the 6th triode
Connected with the emitter of the 7th triode；The source electrode ground connection of the 3rd overcurrent protection pipe, the 4th overcurrent protection pipe, the described 5th
The source electrode of MOSFET pipes is connected through the 4th resistance with 2 feet of corresponding battery protection chip DW01, the grid warp of the 5th MOSFET pipes
Second diode is grounded, and is connected with the 6th transistor base；The drain electrode of 3rd the overcurrent protection pipe, the 4th overcurrent protection pipe
It is connected with the base stage of the 8th triode through the 5th resistance, is connected by the collector of the 8th triode with the 6th transistor base
Form short-circuit protection circuit.
9. battery 0V chargings according to claim 8 and battery protection system, it is characterised in that：The battery 0V chargings electricity
Some switching tubes in road are set to the 9th triode, the tenth triode, and the multiple pressure limiting resistance is set to the first divider resistance,
Two divider resistances, the 3rd divider resistance, the 4th divider resistance；The base stage of 9th triode is grounded through the first divider resistance,
The base stage of 9th triode connects anode through the second divider resistance, and the emitter of the 9th triode is through the 13rd pole
The base stage of pipe, and by collector output the second transistor base of connection of the tenth triode, it is defeated through the second transistor collector
Go out the base stage of the 3rd triode, the transmitting collection output through the 3rd triode is to the first charger pillar and the second charger pillar
Source electrode, the grid of collector the first charger pillar of connection and the second charger pillar through the 3rd triode, described second point
Piezoresistance is connected in parallel between the collector and emitter of the 3rd triode, the 3rd divider resistance connect the 3rd transistor collector with
The cathode connection of lithium battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721401986.9U CN207368709U (en) | 2017-10-27 | 2017-10-27 | A kind of battery 0V chargings and battery protection system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721401986.9U CN207368709U (en) | 2017-10-27 | 2017-10-27 | A kind of battery 0V chargings and battery protection system |
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| CN207368709U true CN207368709U (en) | 2018-05-15 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108808784A (en) * | 2018-06-26 | 2018-11-13 | 南京微盟电子有限公司 | A kind of zero volt battery charger of protection chip for the charging of binodal lithium battery |
| CN109474048A (en) * | 2018-12-30 | 2019-03-15 | 珠海九源电力电子科技有限公司 | Power battery charging and performance detection apparatus containing negative pressure |
| CN109927585A (en) * | 2019-03-21 | 2019-06-25 | 唐国齐 | Electric vehicle portable automatic charge device |
-
2017
- 2017-10-27 CN CN201721401986.9U patent/CN207368709U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108808784A (en) * | 2018-06-26 | 2018-11-13 | 南京微盟电子有限公司 | A kind of zero volt battery charger of protection chip for the charging of binodal lithium battery |
| CN109474048A (en) * | 2018-12-30 | 2019-03-15 | 珠海九源电力电子科技有限公司 | Power battery charging and performance detection apparatus containing negative pressure |
| CN109927585A (en) * | 2019-03-21 | 2019-06-25 | 唐国齐 | Electric vehicle portable automatic charge device |
| CN109927585B (en) * | 2019-03-21 | 2022-07-01 | 唐国齐 | Portable automatic charging device for electric vehicle |
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