CN108494049A - The battery management system of high-power high voltage battery pack - Google Patents

The battery management system of high-power high voltage battery pack Download PDF

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Publication number
CN108494049A
CN108494049A CN201810332486.7A CN201810332486A CN108494049A CN 108494049 A CN108494049 A CN 108494049A CN 201810332486 A CN201810332486 A CN 201810332486A CN 108494049 A CN108494049 A CN 108494049A
Authority
CN
China
Prior art keywords
battery
circuit
management
lithium battery
temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810332486.7A
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Chinese (zh)
Inventor
窦丹
高永涛
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Zhengzhou Nunxin Electronic Technology Co Ltd
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Zhengzhou Nunxin Electronic Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by Zhengzhou Nunxin Electronic Technology Co Ltd filed Critical Zhengzhou Nunxin Electronic Technology Co Ltd
Priority to CN201810332486.7A priority Critical patent/CN108494049A/en
Publication of CN108494049A publication Critical patent/CN108494049A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0026Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially using safety or protection circuits, e.g. overcharge/discharge disconnection
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007Regulation of charging or discharging current or voltage
    • H02J7/0072Regulation of charging or discharging current or voltage using semiconductor devices only
    • H02J7/0088Regulation of charging or discharging current or voltage using semiconductor devices only the charge cycle being terminated in response to non-electric parameters
    • H02J7/0091Regulation of charging or discharging current or voltage using semiconductor devices only the charge cycle being terminated in response to non-electric parameters in response to temperature of the battery

Abstract

The present invention discloses a kind of battery management system of high-power high voltage lithium battery group, including battery equalizing circuit, central processing unit and the voltage acquisition module, current acquisition module, thermal management module, electronic switching circuit, storage logging modle and the Bluetooth transmission circuit that are connected to central processing unit;Voltage acquisition module acquires the real-time voltage of each single battery of lithium battery group;Battery equalizing circuit is opened/is closed by the control of voltage acquisition module, for providing independent discharge channel for each single battery;Current acquisition module is used to monitor the electric current of lithium battery group;Thermal management module is used to monitor the temperature of lithium battery group;Storage logging modle is used to store the log information of lithium battery group;Bluetooth transmission circuit is used to the log information for storing logging modle storage being sent to Bluetooth mobile terminal;Unmanned plane master control can be connected by flying control interface;The work log data of battery management system are uploaded into host computer by data communication interface, so that host computer carries out data management.

Description

The battery management system of high-power high voltage battery pack
Technical field
The present invention relates to battery management system (Battery Management System, BMS), especially high-power height The battery management system of piezoelectric battery group.
Background technology
Generally use the non intelligent common batteries of Soft Roll 6s, 12s as the aviation power supply energy in plant protection aeroplane industry at present, this There are many security risks, and have shortcomings:
1) it is shown without electricity, does not know the current energy state of battery, there is no oil meter instruction is sheerly blind to fly like automobile;
2) there is no shell to protect, be easy to be extruded, intake, safety and aging effects are caused to battery;
3) battery does not have automatic management and security alarm prompt facility, causes the utilization rate of battery to reduce, and be easy Occurred putting, overcharge, bad fever etc. damages the improper usage behavior of battery life, or even occur exploding, catching fire etc. jeopardizing people The extreme case of body property safety;
4) phenomena such as battery is be easy to cause mixed in quantity combo, and new and old ginseng is used;
5) flight when due to the information of battery it is unknown, the case where flying by rule of thumb entirely, causing aircraft aircraft bombing, emerges one after another, and gives Personnel, equipment cause very big hidden danger;
6) there is no back-end data record tracking after a large amount of uses of battery, cause battery recycling difficulty to increase, cost is excessively high, nothing People recycles or simple waste disposal, causes environmental pollution, or even the on fire, explosion that causes to generate heat such as is hurted sb.'s feelings at the events, is caused for society Powerful security risk.
The disclosure of background above technology contents is only used for inventive concept and the technical solution that auxiliary understands the present invention, not The prior art for necessarily belonging to present patent application, no tangible proof show the above present patent application the applying date Before have disclosed in the case of, above-mentioned background technology should not be taken to evaluation the application novelty and creativeness.
Invention content
It is a primary object of the present invention at present applied to plant protection aircraft, electric vehicle, energy-storage battery, high magnification The high-power high voltage lithium battery group in the fields such as battery power supply system proposes a kind of special battery management system, current to solve Battery management system cost of the high-power high voltage lithium battery group in main application field is higher, function is incomplete and system is huge Big problem.
The present invention proposes following technical scheme for the above-mentioned purpose:
A kind of battery management system of high-power high voltage lithium battery group, including battery equalizing circuit, central processing unit and It is connected to voltage acquisition module, current acquisition module, thermal management module, electronic switching circuit, the clock of the central processing unit Circuit, power circuit, Bluetooth transmission circuit, flies control interface and data communication interface at storage logging modle;The voltage acquisition mould Block uses battery pack monitor chip, and acquires each list of lithium battery group by each acquisition interface of the battery pack monitor chip The real-time voltage of body battery;The equilibrium that the battery equalizing circuit is connected to lithium battery group and the battery pack monitor chip connects Between mouthful, is opened/closed by the control of the battery pack monitor chip, for providing independent electric discharge for each single battery Channel;The current acquisition module is used to monitor the electric current of the lithium battery group and feeds back to the central processing unit, when described When the electric current of lithium battery group is higher than the first current threshold, the electronic switching circuit is controlled by the central processing unit and is disconnected, with Stop the charge/discharge of the lithium battery group;The thermal management module is used to monitor the temperature of the lithium battery group and feeds back to The central processing unit;The storage logging modle is used to store the log information of the lithium battery group;The Bluetooth transmission electricity Road is used to the log information of the storage logging modle storage being sent to Bluetooth mobile terminal;The winged control interface is used for Unmanned plane master control;The data communication interface is used to the work log data of the battery management system uploading to host computer, So that host computer carries out data management.
Above-mentioned battery management system provided by the invention all has second class protection in auto-manual equilibrium and electric discharge storage Function, the control of software and hardware integrated protection, it is ensured that battery discharge safety, voltage acquisition module also have the function of anti-system in case of system halt, Even if if the winged phenomenon of race that crashes occurs in system in complex environment, central processor core can still restore automatically, protection power supply system The safe operation of system.In addition, there is superpower host computer data managing capacity, it can be with Bluetooth broadcast quickly by legal battery data It imports host computer or battery daily record data is transmitted to host computer, to make to lithium battery group by host computer by data communication interface Corresponding management, such as sequence, exception are retrieved, are averaged, peak value, electricity attenuation change, curent change rule are inquired, temperature Situation, cycle-index record, illegal usage record etc., be particularly suitable for trendy aircraft, the taking a flight test, continue a journey of electric vehicle development stage, The record of the test jobs such as aircraft (automobile) efficiency, flight (traveling) parameter refers to.Simultaneously to the sieve of different manufacturers battery performance The experimental data with science is selected to refer to.Extend to high power efficiency large-current high-voltage movement power supply system uses field.
Description of the drawings
Fig. 1 is the functional block diagram of the battery management system of the specific embodiment of the invention;
Fig. 2 is the main control chip of the battery management system of the specific embodiment of the invention;
Fig. 3 is the voltage acquisition module circuit diagram of the battery management system of the specific embodiment of the invention;
Fig. 4 is the balanced temperature measurement circuit figure of the battery management system of the specific embodiment of the invention;
Fig. 5 is the real time temperature measurement circuit diagram of the battery management system of the specific embodiment of the invention;
Fig. 6 is the heating temperature measurement circuit figure of the battery management system of the specific embodiment of the invention;
Fig. 7 is the storage logging modle circuit diagram of the battery management system of the specific embodiment of the invention;
Fig. 8 is the reset circuit figure of the main control chip of the battery management system of the specific embodiment of the invention;
Fig. 9 is the power circuit diagram of the battery management system of the specific embodiment of the invention;
Figure 10 is the electronic switching circuit of the battery management system of the specific embodiment of the invention.
Specific implementation mode
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
The specific implementation mode of the present invention provides a kind of battery management system of high-power high voltage lithium battery group, is used for nobody Machine power supply system, especially plant protection aircraft.With reference to figure 1, the battery management system include battery equalizing circuit, central processing unit with And be connected to the voltage acquisition module of the central processing unit, current acquisition module, thermal management module, electronic switching circuit, when Clock circuit, power circuit, Bluetooth transmission circuit, flies control interface and data communication interface at storage logging modle.Central processing unit is Data processing, the data of the modules circuit of entire battery management system are responsible in the core of entire battery management system Exchange, drive control and decision etc..The serial chips of STM8S005 or more for example may be used in central processing unit, or also may be used With using STM32F, high speed MCU, wherein high speed MCU can be used in the 32 above battery packs of string.In the subsequent embodiment of the present invention It is illustrated for using STM8S005C6T6 (subsequently claiming main control chip) as central processing unit.
As shown in figure 3, the voltage acquisition module uses battery pack monitor chip U1, and monitored by the battery pack The real-time voltage of each acquisition interface acquisition each single battery of lithium battery group of device chip U1.In a preferred embodiment, battery Group monitor chip U1 is the LTC6803-3 for insulting Li Erte.It is of course also possible to use other high-tension battery monitors, this hair It is bright that this is not restricted.
Specific embodiments of the present invention are illustrated using insulting the LTC6803-3 of Li Erte as voltage acquisition chip, main To consider that it have many advantages, such as, such as internal watchdog circuit, with main control chip cooperation can prevent system interference and It crashes out of control, even if if the winged phenomenon of race that crashes occurs in system in complex environment, central processing unit can still restore automatically, and protection supplies The safe operation of electric system.Specifically, with reference to figure 3, the WDTB pins (the 37th pin) of LTC6803-3 chips pass through an electricity It hinders R21 and draws reseting interface end RESET;Fig. 8 show the reset circuit figure that the reset pin NRST of main control chip is drawn, NRST The reset circuit of pin also draws reseting interface end RESET, and two reseting interface terminations are logical, realize watchdog function.
The picking rate of the voltage acquisition module of the specific embodiment of the invention is 17ms, and collection voltages precision is 1.5mV.Together When the voltage acquisition module also have battery breaking protection function, battery discharge can be prevented in external connection battery exception, protection electricity Pond;In addition, also have to occur in battery voltage balanced battery capacity it is too low when protection battery no longer by balanced discharge control, to prevent Only putting occurred in battery.Voltage acquisition module in specific embodiments of the present invention is every a string of lithiums by taking 12 series lithium batteries as an example Anode (i.e. a single battery) is connected to acquisition interface C1~C12 of chip U1 by a resistance, in addition to this, also A grade connection can be joined, multiple LTC6803 chip-in series can extend multi-series lithium battery, and highest 108 is gone here and there.
The battery equalizing circuit be connected to lithium battery group and the battery pack monitor chip U1 balanced interface (S1~ S12 it between), is opened/is closed by the control of the battery pack monitor chip U1, for providing independence for each single battery Discharge channel.When the electricity between each single battery is unbalanced, the central processing unit is to the battery pack monitor core Piece U1 sends out battery balanced instruction, and the corresponding discharge channel to control the battery equalizing circuit is opened, battery balanced to carry out. For example, when the real-time voltage for each single battery that central processing unit acquires voltage acquisition module is compared discovery single battery Between pressure difference when being more than a preset value (such as 200mV), it is believed that occur electricity unbalanced phenomena inside lithium battery group, usually need It to discharge the single battery of high voltage, to keep the voltage of all single batteries almost the same, realize battery balanced. When the central processing unit pass through it was found that when needing to carry out battery balanced, send out the battery balanced instruction to chip U1, The chip U1 exports corresponding level signal according to the instruction from its corresponding balanced interface, to control corresponding discharge channel It opens, carries out equalization discharge.Each discharge channel includes a PMOS tube and a resistance, and the source electrode of the PMOS tube connects In the anode of corresponding single battery, grid is connected to one of the battery pack monitor chip U1 by one resistance Balanced interface, drain electrode are connected to the cathode of neighboring unit cell, and it is concatenated to be equivalent between each single battery of lithium battery group, Meanwhile the resistance for leading to balanced interface in corresponding discharge channel is also concatenated, and the resistance of each discharge channel passes through PMOS and the battery of electric discharge form discharge loop.When some equilibrium interface exports what some level signal to connect with the interface When the PMOS of discharge channel is opened, which opens, the single battery electric discharge being attached thereto.The battery balanced electricity of the present invention There is no interference between each discharge channel in road.Similarly, by increasing the quantity of chip U1, it can at most expand to and be gone here and there to 108 Lithium battery carries out battery balanced.
The thermal management module includes balanced temperature measurement circuit for example shown in Fig. 4 and real time temperature measurement electricity for example shown in fig. 5 Road can also further comprise heating temperature measurement circuit for example shown in fig. 6.It is in one embodiment, described real-time with reference to figure 5 Temperature measurement circuit one end is connected to the heat management interface of main control chip U9 by the temp probe P1 connections lithium battery group, the other end HOT_CON, the real time temperature for monitoring the lithium battery group.In a kind of specific embodiment, as shown in figure 5, the reality When temperature measurement circuit AO4828 chips may be used to realize.
With reference to figure 4, the equilibrium temperature measurement circuit, which is used to open in the battery equalizing circuit, carries out battery balanced process The temperature of middle single battery of the detection in balanced discharge state, and temperature data is input to the battery pack monitor chip Temperature management interface VTEMP1, VTEMP2 of U1;When the battery temperature of balanced discharge is higher than the first temperature threshold T1, in described Central processor sends out stopping equalization instruction to the battery pack monitor chip U1, to control described in the battery equalizing circuit Corresponding discharge channel is closed, and is stopped battery balanced.Wherein, NTC1 and NTC2 is connected to the interface of balanced thermometric.
In some embodiments, lithium battery group under lower temperature environments usually can not regular picture, the open air of unmanned plane Operation can not be implemented.Therefore, battery management system of the invention, which has also been devised, is heated to battery using the energy of battery itself Heater circuit, which does not work in the case where temperature is higher than preset temperature (such as 15 DEG C), when according to the real-time survey When circuit temperature measures lithium battery temperature relatively low (can be set lower than second temperature threshold value T2) and leads to not regular picture, master control Heater circuit described in chip controls is opened to heat up to battery, during this in i.e. detectable heating process of heating temperature measurement circuit Battery temperature, when temperature is raised to T3=15 DEG C or more, main control chip controls the heater circuit and stops heating;Wherein, T2 < T3 < T1.Because there are security risks for heating process, it is therefore necessary to limit temperature and heating time.It is specific one In embodiment, as shown in fig. 6, the temperature interface NTC of the heating temperature measurement circuit.
The power circuit takes electricity from the positive B+ of the lithium battery group and exports the cell tube after carrying out steady pressure treatment + 3.3V power supplys needed for the work of reason system.With reference to figure 9, the power circuit include HT7533 chips U4, four diode D1~ D4, resistance R10 and three capacitance C6~C8;The anode of diode D1 and diode D2 is connecting the lithium battery group just jointly Pole B+, cathode are commonly connected to one end of resistance R10;The cathode of diode D3 and diode D4 are commonly connected to resistance R10's The other end, anode are commonly connected to one end of capacitance C8;The other end of capacitance C8 is grounded;Two IN of the HT7533 chips U4 End is connected to described one end of capacitance C8, OUT terminal output+3.3V power supplys;+ 3.3V the power supplys pass through capacitance C6 and electricity simultaneously Hold C7 with ground to be isolated, wherein capacitance C6 is electrolytic capacitor.Power circuit provided in an embodiment of the present invention almost can be whole simultaneously All circuit modules of a battery management system are unified to power, and so as to reduce the complexity of hardware design, reduces system not Ballast and interference;Low-power consumption is pursued in modularized design simultaneously.
Such as Figure 10, the electronic switching circuit is mainly made of switching tube, can bidirectional conduction, one end is connected to lithium electricity The positive B+ of pond group;Driving signal input C_CON, C0_CON and D_CON, the D0_CON of electronic switching circuit;C_CON and The ends C0_CON are charging driving ends, if cell voltage is higher than overcharging boundary value, C_CON during charging to lithium battery group The switching tube of electronic switching circuit can be made to end with the drive signal of the ends C0_CON input, to stop charging, prevent from overcharging.D_ The ends CON and D0_CON are electric discharge driving ends, if cell voltage was less than and puts boundary value during lithium battery group discharge, this The drive signal of driving end input can be such that the switching tube of electronic switching circuit ends, and to stop discharging, prevent from putting.Wherein, Current information from current acquisition module is inputted from node 11 and node 12.Electronic switching circuit in the present invention is by master control Chip and current acquisition chip controls, when there are special circumstances, if such as when unmanned plane flight in the air occurred putting alarm Deng can not stop continuing to discharge, that is to say, that the disconnection of this electronic switching circuit must be in not flight shape in unmanned plane Under state.
Such as Fig. 7, the storage logging modle is used to store the log information of the lithium battery group, such as voltage, electric current, pressure Difference, temperature overcharge number, cross and put number, cycle-index, overtemperature record etc..Also system use quality coefficient, when every other day Phase, product IDs etc..
The current acquisition module be based on HY3118 chips and can two-way acquisition electric current current collection circuit.The indigo plant Tooth transmission circuit is used to the log information of the storage logging modle storage being sent to Bluetooth mobile terminal;The winged control Interface is docked with carrying out data with unmanned plane master control for connecting unmanned plane master control, unmanned plane master control is allowed to learn battery capacity etc. Various battery informations, communication standard can be tri- kinds of modes of IIC/SMBUS/CAN.
The data communication interface is used to the work log data of the battery management system uploading to host computer, for Host computer carries out data management.Separately can also Bluetooth broadcast legal battery data is quickly imported into host computer, and this battery is done (sequence, abnormal retrieval, averages, peak value, electricity attenuation change, the inquiry of curent change rule, temperature shape for corresponding management Condition, cycle-index record, illegal usage record etc.).Be particularly suitable for trendy aircraft, electric vehicle development stage takes a flight test, and continues a journey, fly Machine (automobile) efficiency, the record reference of the test jobs such as flight (traveling) parameter.Screening to different manufacturers battery performance simultaneously Experimental data reference with science.This product extends to the use neck of high power efficiency large-current high-voltage movement power supply unit Domain.The various functions being managed to battery and its management system to be realized of host computer, may be used advanced C# language exploitation, And use database connection management.It can be with server, the connection of APP softwares.Data communication protocol uses encryption and CRC Checking mode.Prevent error code operation and error in data.
In short, the battery management system of the present invention is small, function is strong, at low cost.One piece of BMS circuit boards collocation host computer Software systems can complete client's multi-aspect demand, full-featured, have to the safe handling of battery, protection, monitoring far-reaching Meaning.Data safeguard is provided to the secondary management of battery, recycling, classification and differentiates means;Guarantee is provided to environmental protection.With Family is being to have safe recognition capability, while it also has alarm, prompting, automatic shutdown circuit function, makes user more in face of battery It is convenient, more easily, trust safe handling battery.Design, flight, cruise duration etc. to improve fog machine provide conveniently.But it needs To illustrate that the battery management system of the present invention is not limited to plant protection drone industry, battery applications field is practical.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that The specific implementation of the present invention is confined to these explanations.For those skilled in the art to which the present invention belongs, it is not taking off Under the premise of from present inventive concept, several equivalent substitute or obvious modifications can also be made, and performance or use is identical, all answered When being considered as belonging to protection scope of the present invention.

Claims (9)

1. a kind of battery management system of high-power high voltage lithium battery group is used for unmanned plane power supply system, including battery balanced electricity Road, central processing unit and be connected to the voltage acquisition module of the central processing unit, current acquisition module, thermal management module, Electronic switching circuit, clock circuit, storage logging modle, power circuit, Bluetooth transmission circuit, winged control interface and data communication connect Mouthful;
The voltage acquisition module uses battery pack monitor chip (U1), and passes through the battery pack monitor chip (U1) The real-time voltage of each acquisition interface acquisition each single battery of lithium battery group;
The battery equalizing circuit is connected between lithium battery group and the balanced interface of the battery pack monitor chip (U1), by The control of the battery pack monitor chip (U1) and open/close, for providing independent discharge channel for each single battery;
The current acquisition module is used to monitor the electric current of the lithium battery group and feeds back to the central processing unit, when the lithium When the electric current of battery pack is higher than the first current threshold, the electronic switching circuit is controlled by the central processing unit and is disconnected, to stop The only charge/discharge of the lithium battery group;
The thermal management module is used to monitor the temperature of the lithium battery group and feeds back to the central processing unit;
The storage logging modle is used to store the log information of the lithium battery group;
The Bluetooth transmission circuit is used to the log information of the storage logging modle storage being sent to bluetooth movement eventually End;
The winged control interface is for connecting unmanned plane master control;
The data communication interface is used to the work log data of the battery management system uploading to host computer, for upper Machine carries out data management.
2. battery management system as described in claim 1, it is characterised in that:When the electricity between each single battery is unbalanced When, the central processing unit sends out battery balanced instruction to the battery pack monitor chip (U1), equal to control the battery The corresponding discharge channel of weighing apparatus circuit is opened, battery balanced to carry out.
3. battery management system as claimed in claim 2, it is characterised in that:The thermal management module includes balanced temperature measurement circuit With real time temperature measurement circuit;
The real time temperature measurement circuit on one side connects the lithium battery group by temp probe, and the other end is connected to the central processing The heat management interface (HOT_CON) of device, the real time temperature for monitoring the lithium battery group;
The equilibrium temperature measurement circuit is used to open the during of carrying out battery balanced in the battery equalizing circuit and detect in equal The temperature of the single battery for the discharge condition that weighs, and temperature data is input to the temperature pipe of the battery pack monitor chip (U1) Manage interface (VTEMP1, VTEMP2);When the battery temperature of balanced discharge is higher than the first temperature threshold T1, the central processing unit Stopping equalization instruction being sent out to the battery pack monitor chip (U1), is accordingly put with controlling the described of the battery equalizing circuit Electric channel is closed, and is stopped battery balanced.
4. battery management system as claimed in claim 3, it is characterised in that:The thermal management module further includes a heating thermometric Circuit, the temperature for monitoring the lithium battery group during battery heater circuit carries out heat temperature raising to the lithium battery group Degree;Wherein, the battery heater circuit is opened when the real time temperature of the lithium battery group is less than second temperature threshold value T2, And it is closed when the real time temperature reaches third temperature threshold T3;Wherein, T2 < T3 < T1.
5. battery management system as described in claim 1, it is characterised in that:The power circuit from the lithium battery group just Pole (B+) takes electricity and exports the required+3.3V power supplys of the battery management system work after carrying out steady pressure treatment.
6. battery management system as claimed in claim 5, it is characterised in that:The power circuit includes HT7533 chips (U4), first to fourth diode (D1~D4), the tenth resistance (R10) and the 6th to the 8th capacitance (C6~C8);First He The anode of second diode (D1, D2) connects the anode (B+) of the lithium battery group jointly, and cathode is commonly connected to the tenth resistance (R10) one end;The cathode of third and fourth diode (D3, D4) is commonly connected to the other end of the tenth resistance (R10), anode It is commonly connected to one end of the 8th capacitance (C8);The other end of 8th capacitance (C8) is grounded;The two of the HT7533 chips (U4) A ends IN are connected to described one end of the 8th capacitance (C8), OUT terminal output+3.3V power supplys;+ 3.3V the power supplys pass through simultaneously 6th capacitance (C6) and the 7th capacitance (C7) are isolated with ground, wherein the 6th capacitance (C6) is electrolytic capacitor.
7. battery management system as described in claim 1, it is characterised in that:The battery pack monitor chip (U1) is inside It is integrated with the LTC6803 family chips of watchdog circuit.
8. battery management system as claimed in claim 2, it is characterised in that:One electric discharge of the battery equalizing circuit Channel includes a PMOS tube and a resistance, and the source electrode of the PMOS tube is connected to the anode of corresponding single battery, grid A balanced interface of the battery pack monitor chip (U1) is connected to by one resistance.
9. battery management system as described in claim 1, it is characterised in that:The current acquisition module is to be based on HY3118 cores Piece and can two-way acquisition electric current current collection circuit.
CN201810332486.7A 2018-04-13 2018-04-13 The battery management system of high-power high voltage battery pack Pending CN108494049A (en)

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CN201810332486.7A CN108494049A (en) 2018-04-13 2018-04-13 The battery management system of high-power high voltage battery pack

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109617167A (en) * 2018-12-21 2019-04-12 深圳市道通智能航空技术有限公司 A kind of battery over-discharge alarming method for power, device, battery and aircraft
CN109739253A (en) * 2019-01-28 2019-05-10 深圳市道通智能航空技术有限公司 A kind of aircraft battery monitoring method, device, battery and aircraft

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109617167A (en) * 2018-12-21 2019-04-12 深圳市道通智能航空技术有限公司 A kind of battery over-discharge alarming method for power, device, battery and aircraft
CN109617167B (en) * 2018-12-21 2021-06-01 深圳市道通智能航空技术股份有限公司 Battery overdischarge warning method and device, battery and aircraft
CN109739253A (en) * 2019-01-28 2019-05-10 深圳市道通智能航空技术有限公司 A kind of aircraft battery monitoring method, device, battery and aircraft

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