CN207098596U - A kind of BMS disconnection protection circuits - Google Patents
A kind of BMS disconnection protection circuits Download PDFInfo
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- CN207098596U CN207098596U CN201720216628.4U CN201720216628U CN207098596U CN 207098596 U CN207098596 U CN 207098596U CN 201720216628 U CN201720216628 U CN 201720216628U CN 207098596 U CN207098596 U CN 207098596U
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Abstract
The utility model discloses a kind of BMS disconnection protection circuits, including battery pack and the load for being connected to battery pack both ends, in addition to：Voltage comparison module, odd even selecting module, control modular converter, power switching modules；The voltage comparison module is connected with battery pack, odd even selecting module and control modular converter respectively；The load is connected with battery pack and power switching modules respectively；The control modular converter also connects with odd even selecting module with power switching modules respectively；The odd even selecting module alternate selection is all to arrange sequence number odd number or the battery of even number sequence number；Corresponding circuit in the battery conducting voltage comparison module that the control modular converter is selected according to odd even selecting module；The conducting situation of each battery in the voltage comparison module battery pack that alternately detection odd even selecting module is chosen.The utility model can be when battery be connected abnormal or disconnection with its protection device, timely disconnecting circuit, so as to prevent the possibility of cell damage.
Description
Technical field
It the utility model is related to battery protecting plate manufacturing technology field, more particularly to a kind of BMS disconnection protection circuits.
Background technology
, it is necessary to monitor the voltage of each batteries in real time to determine the working condition of battery in multiple batteries protection board.Such as
The connection of fruit battery and its protection board is abnormal or disconnects, and cell voltage can not be by measuring promptly and accurately, then in battery
Under charging and discharging state, protection device possibly can not be protected correctly to battery, battery precocity can so be damaged and even sent out
It is raw dangerous.
The protection scheme of existing protection board is divided into method of software Protection and hardware protection scheme, wherein, hardware protection side
Case is divided into integrated IC protection boards scheme and single-unit concatenated schemes again.Parameter setting in method of software Protection is convenient, can do work
Can diversified facilities, can be to the outside parameters for providing battery pack, but stability is poor, cost is high, production in enormous quantities efficiency compared with
The shortcomings that low.The Protection parameters of integrated IC protection board schemes are fixed, not settable, stability is high, component number is relatively fewer,
Part scheme has the advantages that breaking protection function, but the shortcomings that string number change is dumb, and cost is still higher be present.Single-unit level
Although connection scheme component number is relatively more, there is string number becomes more flexible, and optional parameters is flexible, and stability is high, and cost is low etc.
Advantage.So market demand will be progressively to two extreme developments, first, the demand of functional diversities, will use the soft of high cost
Part protection scheme；First, inexpensive and high reliability demand, will use single-unit concatenated schemes.
Single-unit concatenated schemes have largely used in the market, but also knocking comes out its shortcoming therewith in use,
That is exactly not have breaking protection function, and when all battery sampling lines all connect normal, protection board can be completed perfectly
Fill, cross put, excessively stream, the defencive function such as short circuit, but after the battery sampling line disconnection of certain string, protection board is still working properly,
Simply neglect that a string that sampling line disconnects, that string battery thus disconnected to sampling line brings risk, whole so as to produce
The possibility of Battery pack damage.
Battery pack in single-unit concatenated schemes is all using multiple battery cores backward externally fed in parallel, battery protecting plate collection
Whether the voltage of battery of often going here and there judges the whole group battery to externally fed.However, because battery core is cascade, used on protection board
Circuit actually be also cascade, wherein, often economize on electricity core consumable there was only microampere order, so often economize on electricity core impedance very
Greatly.Because the circuit structure of every economize on electricity core is consistent, so impedance is also of substantially equal, when the sampling line of wherein one economize on electricity core disconnects
Afterwards, but the sampling line of economize on electricity core still connects normally up and down, and the resistance big equivalent to two of the voltage wherein at perforated line is to upper
Lower two economize on electricitys cell voltage carries out the mid-point voltage obtained after partial pressure, so battery protecting plate will be unable to sentence the sampling of battery core after broken string
Whether line disconnects.
Therefore, the prior art is defective, it is necessary to improve.
Utility model content
The purpose of this utility model is overcome the deficiencies in the prior art, there is provided a kind of BMS disconnection protection circuits.
The technical solution of the utility model is as follows：A kind of BMS disconnection protection circuits, including battery pack and it is connected to battery pack
The load at both ends, in addition to：Voltage comparison module, odd even selecting module, control modular converter, power switching modules；The electricity
Pressure comparison module is connected with battery pack, odd even selecting module and control modular converter respectively；It is described load respectively with battery pack and
Power switching modules connect；The control modular converter also connects with odd even selecting module with power switching modules respectively；It is described
Power switch is also connected with battery pack；The odd even selecting module alternate selection is all to arrange sequence number odd number or the electricity of even number sequence number
Pond；The conducting situation of each battery in the voltage comparison module battery pack that alternately detection odd even selecting module is chosen；It is described
Corresponding circuit in the battery conducting voltage comparison module that control modular converter is selected according to odd even selecting module；When battery breaks
Afterwards, voltage comparison module detects the broken string situation, feeds back to control modular converter, and power switch is controlled by control modular converter
Module is by whole circuit breaker.
Further, the voltage comparison module includes several voltage comparison sub-modules, and each submodule is comprising the
One diode, first resistor, second resistance, the first triode, 3rd resistor, the 4th resistance, the 5th resistance, the first operation amplifier
Device and the second diode；The emitter stage of first triode connects the positive pole of single battery in battery pack, the first resistor one
The base stage of the first triode of end connection, the emitter stage of the first triode of another termination；Described second resistance one end connects diode
Positive pole, the other end connect the first triode base stage；The colelctor electrode of first triode connects 3rd resistor, the 4th resistance successively,
The negative pole of the input of the first operational amplifier is connect again；The positive input terminal of first operational amplifier is connected on the first triode and the 3rd
Between resistance, the negative pole of output the second diode of termination of the first operational amplifier；5th resistance is connected on the first triode
Colelctor electrode.
Further, the odd even selecting module includes the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance, first
Electric capacity, the second electric capacity, the second triode and the 3rd triode；7th resistance and the first electric capacity series connection, the 6th resistance
It is connected in parallel on the both ends of the 7th resistance and the first electric capacity, the electric current joint of the 6th resistance and the 7th resistance is first node；It is described
8th resistance and the series connection of the second electric capacity, the 9th resistor coupled in parallel is in the 8th resistance and the second electric capacity both ends, the 8th resistance and the 9th electricity
The electric current joint of resistance is section point, and section point overlaps with first node；The colelctor electrode of second triode is connected on
Between six resistance and the first electric capacity, the base stage of the second triode is connected between the 8th resistance and the second electric capacity, the second triode
Grounded emitter；The colelctor electrode of 3rd triode is connected between the 9th resistance and the second electric capacity, the base stage of the 3rd triode
It is connected between the 7th resistance and the first electric capacity, the grounded emitter of the 3rd triode；
Further, the colelctor electrode of the second triode is also connected with the son of battery-arrangements serial number even number in voltage comparison module
The first diode cathode in module；It is strange that the colelctor electrode of 3rd triode is also connected with battery-arrangements serial number in voltage comparison module
The first diode cathode in several submodules.
Further, the control modular converter includes the tenth resistance, the 11st resistance, the 12nd resistance, the four or three pole
Pipe, the 5th triode, the 13rd resistance, the 14th resistance, the 15th resistance, the 6th triode and the 7th triode；Described
Ten resistance, the 11st resistance and the 12nd resistance one end are intersected in the 3rd node, and the other end of the tenth resistance connects the five or three pole
The colelctor electrode of pipe, the colelctor electrode of the triode of another termination the 4th of the 11st resistance, another termination the four or three of the 12nd resistance
The emitter stage of pole pipe, the colelctor electrode of the 4th triode connect the emitter stage of the 5th triode；13rd resistance, the 14th resistance
Fourth node is intersected in the 15th resistance one end, the other end of the 13rd resistance connects the colelctor electrode of the 7th triode, and the tenth
The colelctor electrode of the triode of another termination the 6th of four resistance, the emitter stage of the triode of another termination the 6th of the 15th resistance, the
The colelctor electrode of six triodes connects the emitter stage of the 7th triode, and the colelctor electrode of the 5th triode connects the colelctor electrode of the 7th triode,
3rd node overlaps with fourth node.
Further, the base stage of the 4th triode also connects the son of battery-arrangements serial number odd number in voltage comparison module
The second diode cathode in module；It is strange that the base stage of 5th triode also connects battery-arrangements serial number in voltage comparison module
The first diode cathode in several submodules；The base stage of 6th triode also connects battery-arrangements sequence in voltage comparison module
Number for even number submodule in the second diode cathode；The base stage of 7th triode also connects battery in voltage comparison module
Arrange the first diode cathode in the submodule of serial number even number.
Using such scheme, the utility model provides a kind of BMS disconnection protection circuits, when battery in battery pack sampling line breaks
After opening, output is closed in the utility model control load, forbids battery pack to externally fed, so as to prevent the possibility of cell damage
Property, reach the purpose of protection.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the circuit diagram of the utility model voltage comparison module；
Fig. 3 is the circuit diagram of the utility model odd even selecting module；
Fig. 4 is the circuit diagram that the utility model controls modular converter；
Fig. 5 is the circuit diagram of the utility model power switch.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
Shown in reference picture 1, the utility model provides a kind of BMS disconnection protection circuits.Including：Battery pack 1, voltage ratio are compared with mould
Block 2, odd even selecting module 3, control modular converter 4, power switching modules 5, load 6；The voltage comparison module 2 respectively with electricity
Pond group 1, odd even selecting module 3 and control modular converter 4 connect；It is described load 6 respectively with battery pack 1 and power switching modules 5
Connection；The control modular converter 4 also connects with odd even selecting module 3 and power switching modules 5 respectively；The power switch is also
It is connected with battery pack 1.The alternate selection of odd even selecting module 3 is all to arrange sequence number odd number or the battery of even number sequence number；It is described
Corresponding circuit in the battery conducting voltage comparison module 2 that the control root tuber of modulus of conversion 4 is selected according to odd even selecting module 3；The electricity
The conducting situation of each battery in pressure comparison module 2 battery pack that alternately detection odd even selecting module 3 is chosen；When battery breaks
Afterwards, the control modular converter 4 controls power switching modules 5 by whole circuit breaker.
Shown in reference picture 2, specifically, include some batteries in parallel in battery pack 1, the voltage comparison module 2 is wrapped
Include the both ends that several voltage comparison sub-modules are connected in parallel on each battery.Battery pack 1 in the present embodiment includes five electricity in parallel
Pond, correspondingly, voltage comparison module 2 include 5 voltage comparison sub-modules, this sentence containing diode DG30, resistance RG31,
Resistance RG32, triode QG03, resistance RG33, resistance RG35, resistance RG24, operational amplifier LG03A and diode DG41
Exemplified by voltage comparison sub-module.
The emitter stage of the triode QG03 connects the positive pole of single battery in battery pack 1, resistance RG31 one end connection
Triode QG03 base stage, another termination triode QG03 emitter stage；Resistance RG32 one end connection diode DG30's
Positive pole, other end connecting triode QG03 base stage；Triode QG03 colelctor electrode connecting resistance RG33, resistance RG35 successively, then
Connect the negative pole of operational amplifier LG03A input；Operational amplifier LG03A positive input terminal is connected on triode QG03 and electricity
Between hindering RG33, operational amplifier LG03A output terminating diode DG41 negative pole；The resistance RG24 is connected on triode
QG03 colelctor electrode.
Shown in reference picture 3, the odd even selecting module 3 includes resistance RZ03, resistance RZ01, resistance RZ02, resistance
RZ04, electric capacity CZ01, electric capacity CZ02, triode QZ02 and triode QZ01；Resistance RZ01 and electric capacity the CZ01 series connection, it is described
Resistance RZ03 is connected in parallel on resistance RZ01 and electric capacity CZ01 both ends, and resistance RZ03 and resistance RZ01 electric current joint is first
Node；Resistance RZ02 and electric capacity the CZ02 series connection, resistance RZ04 are connected in parallel on resistance RZ02 and electric capacity CZ02 both ends, resistance
RZ02 and resistance RZ04 electric current joint is section point, and section point overlaps with first node；The triode QZ02's
Colelctor electrode is connected between resistance RZ03 and electric capacity CZ01, and triode QZ02 base stage is connected between resistance RZ02 and electric capacity CZ02,
Triode QZ02 grounded emitter；The colelctor electrode of the triode QZ01 is connected between resistance RZ04 and electric capacity CZ02, three poles
Pipe QZ01 base stage is connected between resistance RZ01 and electric capacity CZ01, triode QZ01 grounded emitter；
The colelctor electrode of QZ02 triodes is also connected with voltage comparison module 2 in the submodule of battery-arrangements serial number even number
Diode DG40, DG20 negative pole；Triode QZ01 colelctor electrode is also connected with battery-arrangements serial number odd number in voltage comparison module 2
Submodule in diode DG50, DG30, DG10 negative pole.
Shown in reference picture 4, the control modular converter 4 includes resistance RK01, resistance RK02, resistance RK03, triode
QK01, triode QK02, resistance RK04, resistance RK05, resistance RK06, triode QK03 and triode QKO4；The resistance
RK01, resistance RK02 and resistance RK03 one end are intersected in the 3rd node, resistance RK01 other end connecting triode QK02 collection
Electrode, resistance RK02 another termination triode QK01 colelctor electrode, resistance RK03 another termination triode QK01 transmitting
Pole, triode QK01 collector connecting transistor QK02 emitter stage；The resistance RK04, resistance RK05 and resistance RK06 one end
It is intersected in fourth node, resistance RK04 other end connecting triode QKO4 colelctor electrode, the resistance RK05 pole of another termination three
Pipe QK03 colelctor electrode, resistance RK06 another termination triode QK03 emitter stage, triode QK03 colelctor electrode connect three poles
Pipe QKO4 emitter stage, triode QK02 collector connecting transistor QKO4 colelctor electrode, the 3rd node and fourth node weight
Close.
The base stage of the triode QK01 is also connect in voltage comparison module 2 in the submodule of battery-arrangements serial number odd number
Diode DG51, DG31, DG11 positive pole；The base stage of the triode QK02 also connects battery-arrangements sequence number in voltage comparison module 2
For diode DG50, DG30, DG10 negative pole in the submodule of odd number；The base stage of the triode QK03 also connect voltage ratio compared with
Diode DG41, DG21 positive pole in module 2 in the submodule of battery-arrangements serial number even number；The base stage of the triode QKO4
Also connect diode DG40, DG20 negative pole in the submodule of battery-arrangements serial number even number in voltage comparison module 2.
Utility model works principle：
Referring to figs. 1 to shown in Fig. 5, the utility model is judged every at each batteries with a voltage comparison sub-module
The voltage condition at batteries both ends.When a batteries impedance becomes it is small when, voltage comparison module 2 is by the voltage of the batteries and the section
Voltage after the voltage of battery two adjacent sections battery is compared.When not breaking, this section battery impedance diminishes
In the case of, its output voltage will be above the voltage after the two batteries partial pressures adjacent with this battery still equal to this section cell voltage
Value, voltage comparison module 2 export high level, do not influence the working condition of its load 6；When breaking, this section battery impedance
In the case of diminishing, this section cell output voltage will be less than the magnitude of voltage after this two adjacent sections voltage, voltage comparison module 2
Low level will be exported, this low level after signal is changed, most at last close power switching modules power electronic switching, with up to
To the purpose of protection.
It is noted that the utility model completes the selection of string number with a symmetrical RC multivibrator, pass through
The battery of battery pack 1 is divided into two parts, odd number section and even number section, every time the lower partial pressure of two section adjacent thereto to single battery
Internal resistance is changed, to determine when that the impedance to which joint number is changed.The operation principle of odd even selecting module 3 is such as
Under：
When utility model works, circuit is in stable state, because the parameter of circuit has error so that flow through electricity
The electric current for hindering RZ02 electric current and resistance RZ01 is incomplete same.When the electric current ratio resistance RZ01 for flowing through resistance RZ02 it is big when,
The electric current that electric current then causes to flow through resistance RZ03 by triode QZ02 base stage amplification also increases, while makes triode QZ02's
Collector potential declines, and now potential difference occur in electric capacity CZ01 two terminal potentials.Because the both end voltage of electric capacity does not allow to dash forward
Become, cause triode QZ01 base potential to decline, the voltage of colelctor electrode rises, and electric current, which flows through electric capacity CZ02, makes triode Q202
Base potential rise, triode QZ02 collector current becomes big, forms positive feedback.This process will just be in magnifying state
Triode QZ01, QZ02, respectively to cut-off and saturation state it is excessive.When triode QZ02 saturations, collector voltage is stable
It is constant, and electric current is also not controlled by base stage, then, power supply can charge through resistance RZ01 to electric capacity CZ01, make triode QZ01's
Base potential rises, and collector potential declines.
Similarly, the terminal potentials of CZ02 two also cannot instantaneous variation, cause triode QZ02 base potential to decline, colelctor electrode
Current potential rise, by electric capacity CZ01 be able to will make triode QZ01 base potentials rise, formed positive feedback so that triode
It is excessive to saturation, cut-off that QZ01, QZ02 are respectively at cut-off, saturation state.Two triodes QZ01, QZ02 are alternate like this
Saturation is ended, and goes to select odd number string or even number string to go to carry out broken string judgement.When triode QZ02 saturation conductions, even number is selected
String carries out broken string judgement, when triode QZ01 saturation conductions, selects odd number string to carry out burn out detection judgement.
Specifically, when triode QZ01 saturation conductions, its colelctor electrode will be changed into low level, and (now triode QZ02 is closed
Cut-off is closed, colelctor electrode, emitter voltage thereon are high level, and this high level divides two-way：The electricity of even number battery will be connected all the way
Press isolating diode DG20, DG40 of comparison sub-module reverse, screen keeps away the voltage comparison sub-module of connection even number battery；Separately
Triode QK04 base stage is directly sent to all the way, closes triode QK04, and the voltage ratio that screen keeps away connection even number battery is more sub
The institute of module break detection circuit part output is stateful), this low level is equally also divided into two-way progress, is sent to triode all the way
QK02 base stage, path is provided to connect the detection of the voltage comparison sub-module of odd number battery；Another way goes to carry out string number selection,
The impedance of odd number batteries is set to diminish that (for even number batteries impedance, even number batteries are now because of triode QZ02
Disconnect, triode QZ02 colelctor electrode, emitter voltage are high level, and diode DG20, DG40 are reverse, therefore antithesis batteries
Impedance does not influence).Triode QG01, QG03, QG05 base stage are dragged down respectively by diode DG10, DG30, DG50, made
These three pipes are turned on, and resistance RG13, RG33, RG53 are accessed into odd number string battery detecting end, make the interior of these odd number string batteries
Resistive is low, and the internal resistance of their own adjacent cell (even number string battery) is constant, so when the battery sampling line of odd number section takes off
During from battery pack 1, the voltage got thereon will be far below two adjacent sections battery electricity because resistance RG13, RG33, RG53 are accessed
Pressure passes through the voltage after resistance RG14, RG15, RG34, RG35, RG54, RG55 fixed partial pressure, so as to allow operational amplifier
UG01A, UG03B, UG05B output end export a low level.
After any batteries sampling line in odd number string battery disconnects, the fortune in its corresponding voltage comparison sub-module
A low level will be exported by calculating amplifier out, and this low level passes through corresponding isolating diode DG11, DG31, DG51
Triode QK01 base stage is dragged down, triode QK01 colelctor electrode, emitter stage are turned on, now, QK02 colelctor electrode, hair
Emitter-base bandgap grading is also at logical dress state, and the base stage for the FET Q13 being added in power switching modules 5 is made field-effect by this high level
Pipe Q13 colelctor electrode, emitter stage conducting, so as to which discharge power switching tube QD1 grid potential is pulled down into source electrode, closing is put
Power switch pipe QD1, so as to have the function that protection.
Similarly, when even number string enters detection state, all paths of odd number string will be kept away by screen, triode QK04,
QK03 will be switched on, and the base stage for the power switch pipe Q13 being added in power switching modules 5 is made power by same high level
Switching tube QD1 is closed.If there is not broken string situation, triode QK01, QK03 base stage there will be no low level appearance,
There will be no the base stage that high level is added to power switch pipe Q13.All break detection circuits will not affect that battery protection
The normal work of circuit module.Protection circuit module and voltage comparison module are two relations arranged side by side, and either party detects
It is abnormal, all power switch pipe QD1 is closed.
In summary, the utility model provides a kind of BMS disconnection protection circuits, when battery sampling line disconnects in battery pack 1
Afterwards, output is closed in the utility model control load 6, forbids battery pack 1 to externally fed, so as to prevent the possibility of cell damage
Property, reach the purpose of protection.
Preferred embodiment of the present utility model is these are only, is not limited to the utility model, it is all in this practicality
All any modification, equivalent and improvement made within new spirit and principle etc., should be included in guarantor of the present utility model
Within the scope of shield.
Claims (6)
1. a kind of BMS disconnection protection circuits, including battery pack and the load for being connected to battery pack both ends, it is characterised in that also wrap
Include：Voltage comparison module, odd even selecting module, control modular converter, power switching modules；
The voltage comparison module is connected with battery pack, odd even selecting module and control modular converter respectively；The load difference
It is connected with battery pack and power switching modules；It is described control modular converter also respectively with odd even selecting module and power switching modules
Connection；The power switch is also connected with battery pack；The odd even selecting module alternate selection is all to arrange sequence number odd number or idol
The battery of number sequence number；The conducting of each battery in the voltage comparison module battery pack that alternately detection odd even selecting module is chosen
Situation；Corresponding circuit in the battery conducting voltage comparison module that the control modular converter is selected according to odd even selecting module；
After battery breaks, voltage comparison module detects the broken string situation, feeds back to control modular converter, by control modular converter control
Power switching modules processed are by whole circuit breaker.
2. BMS disconnection protection circuits according to claim 1, it is characterised in that the voltage comparison module includes some
Individual voltage comparison sub-module, each submodule is comprising the first diode, first resistor, second resistance, the first triode, the 3rd
Resistance, the 4th resistance, the 5th resistance, the first operational amplifier and the second diode；The emitter stage of first triode connects electricity
The positive pole of single battery in the group of pond, described first resistor one end connect the base stage of the first triode, the first triode of another termination
Emitter stage；The positive pole of second resistance one end connection diode, the other end connect the base stage of the first triode；One or three pole
The colelctor electrode of pipe connects 3rd resistor, the 4th resistance successively, then connects the negative pole of the input of the first operational amplifier；First computing is put
The positive input terminal of big device is connected between the first triode and 3rd resistor, and the output of the first operational amplifier terminates the second diode
Negative pole；5th resistance is connected on the colelctor electrode of the first triode.
3. BMS disconnection protection circuits according to claim 2, it is characterised in that the odd even selecting module includes the 6th
Resistance, the 7th resistance, the 8th resistance, the 9th resistance, the first electric capacity, the second electric capacity, the second triode and the 3rd triode；It is described
7th resistance and the series connection of the first electric capacity, the 6th resistor coupled in parallel at the both ends of the 7th resistance and the first electric capacity, the 6th resistance with
The electric current joint of 7th resistance is first node；8th resistance and the second electric capacity series connection, the 9th resistor coupled in parallel is the 8th
The electric current joint of resistance and the second electric capacity both ends, the 8th resistance and the 9th resistance is section point, section point and first segment
Point overlaps；The colelctor electrode of second triode is connected between the 6th resistance and the first electric capacity, and the base stage of the second triode is connected on
Between 8th resistance and the second electric capacity, the grounded emitter of the second triode；The colelctor electrode of 3rd triode is connected on the 9th
Between resistance and the second electric capacity, the base stage of the 3rd triode is connected between the 7th resistance and the first electric capacity, the hair of the 3rd triode
Emitter grounding.
4. BMS disconnection protection circuits according to claim 3, it is characterised in that the colelctor electrode of the second triode is also connected with
The first diode cathode in voltage comparison module in the submodule of battery-arrangements serial number even number；The colelctor electrode of 3rd triode
It is also connected with the first diode cathode in the submodule of battery-arrangements serial number odd number in voltage comparison module.
5. BMS disconnection protection circuits according to claim 4, it is characterised in that the control modular converter includes the tenth
Resistance, the 11st resistance, the 12nd resistance, the 4th triode, the 5th triode, the 13rd resistance, the 14th resistance, the 15th
Resistance, the 6th triode and the 7th triode；Described tenth resistance, the 11st resistance and the 12nd resistance one end are intersected in the 3rd
Node, the other end of the tenth resistance connect the colelctor electrode of the 5th triode, the triode of another termination the 4th of the 11st resistance
Colelctor electrode, the emitter stage of the triode of another termination the 4th of the 12nd resistance, the colelctor electrode of the 4th triode connect the 5th triode
Emitter stage；Described 13rd resistance, the 14th resistance and the 15th resistance one end are intersected in fourth node, the 13rd resistance
The other end connects the colelctor electrode of the 7th triode, the colelctor electrode of the triode of another termination the 6th of the 14th resistance, the 15th electricity
The emitter stage of the triode of another termination the 6th of resistance, the colelctor electrode of the 6th triode connect the emitter stage of the 7th triode, and the five or three
The colelctor electrode of pole pipe connects the colelctor electrode of the 7th triode, and the 3rd node overlaps with fourth node.
6. BMS disconnection protection circuits according to claim 5, it is characterised in that the base stage of the 4th triode also connects
The second diode cathode in voltage comparison module in the submodule of battery-arrangements serial number odd number；The base of 5th triode
Pole also connects the first diode cathode in the submodule of battery-arrangements serial number odd number in voltage comparison module；Six or three pole
The base stage of pipe also connects the second diode cathode in the submodule of battery-arrangements serial number even number in voltage comparison module；Described
The base stage of seven triodes also connects the first diode cathode in the submodule of battery-arrangements serial number even number in voltage comparison module.
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| CN201720216628.4U CN207098596U (en) | 2017-03-07 | 2017-03-07 | A kind of BMS disconnection protection circuits |
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| CN114678937A (en) * | 2022-04-22 | 2022-06-28 | 上海筱珈科技有限公司 | Multi-battery management circuit and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109366142A (en) * | 2018-11-05 | 2019-02-22 | 江苏文光车辆附件有限公司 | A kind of automobile lamp screw automatic crimping device |
| CN109366142B (en) * | 2018-11-05 | 2024-04-02 | 江苏文光车辆附件有限公司 | Automatic crimping device for automobile lamp screw |
| CN110187286A (en) * | 2019-05-31 | 2019-08-30 | 蜂巢能源科技有限公司 | Detection circuit, power-supply system and the vehicle of copper bar connection status |
| CN110187286B (en) * | 2019-05-31 | 2021-09-14 | 蜂巢能源科技有限公司 | Detection circuitry, electrical power generating system and vehicle of copper bar connection status |
| CN114678937A (en) * | 2022-04-22 | 2022-06-28 | 上海筱珈科技有限公司 | Multi-battery management circuit and method |
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