CN102815221A - Electromobile power platform system with integrative control - Google Patents
Electromobile power platform system with integrative control Download PDFInfo
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- CN102815221A CN102815221A CN2012101869636A CN201210186963A CN102815221A CN 102815221 A CN102815221 A CN 102815221A CN 2012101869636 A CN2012101869636 A CN 2012101869636A CN 201210186963 A CN201210186963 A CN 201210186963A CN 102815221 A CN102815221 A CN 102815221A
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Abstract
The invention discloses an electromobile power platform system with integrative control, which comprises a power battery pack, a battery guard plate, a motor controller and a motor, The motor is connected with the motor controller through a motor three-phase power line, a motor speed signal line and a motor control signal line; the motor controller is connected with a positive electrode and a negative electrode of the power battery pack; and the battery guard plate is connected with the motor controller through a low electric quantity alarming signal line, a low voltage protecting signal line and a high voltage protecting signal line for sending low electric quantity alarming signals, low voltage protecting signals and high voltage protecting switch signals to the motor controller. According to the electromobile, the motor controller provides charging protection and discharging protection for the power battery pack, so as to overcome the problem of damage on the battery guard plate and the motor controller by surge current formed due to the fact that the battery guard plate suddenly powers off to protect the power battery pack, the efficiency and the reliability of the system are improved and the cost is reduced.
Description
Technical field
The present invention relates to traffic and automation field, specifically is a kind of control integration battery-driven car power platform system.The battery-driven car power platform system that the present invention relates to is applicable to the elec. vehicle that 24V to 96V adopts high energy secondary batterys such as motor and lithium ion battery, Ni-MH battery to drive, and mainly comprises elec. vehicles such as battery-operated motor cycle, Electrical Bicycle, electronic instead of walk for invalids car, electric recreation vehicle, golf cart, electronic beach buggy, light-weight electric automobile, AGV dolly.
Background technology
In recent years; Urban transport problems receives people's concern day by day; Although automobile, motor bike, the car of riding instead of walk etc. are popularized in the world because of it has advantage such as easy to use as walking-replacing tool gradually; But along with the continuous increase of city automobile, motor bike, instead of walk for invalids car recoverable amount, the problem of problem of environmental pollution and energy aspect is also serious day by day.Along with novel high-energy secondary battery technology especially lithium-ion-power cell continuous advancement in technology, the technological development of battery-operated motor cycle, Electrical Bicycle, electric cycle, electric recreation vehicle and applying day by day comes into one's own.
Novel high-energy such as lithium ion battery, Ni-MH battery secondary battery is with respect to lead-acid battery, and its energy specific density improves greatly, does not have environmental pollution; Obtain increasing application; Along with the expansion of the maturation and the market scale of technology, its price also will significantly reduce, and will replace lead-acid battery.But because novel high-energy secondary battery characteristics such as lithium cell, Ni-MH battery are more active; Voltage, electric current and working environment to discharging and recharging have exacting requirements; Overcharge or cross to put and all can cause its nonvolatil damage, even bring potential safety hazard, guarantee that electrokinetic cell normally provides drive energy for elec. vehicle; Must be equipped with battery protecting plate, its operation is managed and protected.Adopting lithium-ion-power cell in the market is the drive system of electric motor vehicle of electric energy; Lack general system design; Is on the drive system of electric motor vehicle of electric energy originally with the lead-acid battery; Only increased a battery protecting plate simply, the management and the protection of electrokinetic cell have all been adopted by the unaided scheme of battery protecting plate, both carried power supply to motor by battery protecting plate MOSFET control battery pack; Simultaneously in battery pack during the too high or voltage below level of some monomer battery voltages battery protecting plate control MOSFET turn-off the battery pack major loop, with the safety of protection battery pack.Mainly there are three problems in the method:
(1) MOSFET is when big current work, and is very easily overheated and damage, greatly the long-time stable operation of electric current; MOSFET because of voltage is high, the electric current conference produces big surge impact, very easily damages electric machine controller and battery protecting plate when turn-offing the battery pack major loop; . for guaranteeing the load balancing of MOSFET when the big current work, battery protecting plate promptly will be equipped with MOSFET, also must be equipped with the load balancing control module, technical sophistication, and cost is higher.
(2) do not have energy feedback charge protection, cause over-charging of battery easily.
(3) lack low electric weight and make the police, cause easily and cast anchor in advancing midway, influence traffic safety.
Summary of the invention
The objective of the invention is to overcome the shortcoming of prior art, provide a kind of surge of avoiding to damage control circuit, and the control integration battery-driven car power platform system that realizes charge protection, discharge prevention and energy feedback.
The object of the invention is realized through following technical scheme:
A kind of battery-driven car power platform system of control integration comprises power battery pack, battery protecting plate, electric machine controller and motor; Motor is connected with electric machine controller through motor three-phase power line, motor speed signal line, motor control signal line respectively; Electric machine controller respectively at power battery pack positive pole and the negative pole of power battery pack be connected; Battery protecting plate is connected with electric machine controller with the high voltage protective signal wire (SW) through low charge alert signal wire (SW), low-voltage variation signal wire (SW) respectively, sends low charge alert, low-voltage variation and high voltage protective on-off signal to electric machine controller respectively;
Said power battery pack is made up of through serial or parallel connection a plurality of monomer electrokinetic cells;
Battery protecting plate comprises a plurality of single-unit li-ion cell protection modules, low electric weight alerting signal driving circuit, discharge prevention signal drive circuit and charge protection signal drive circuit, and every joint lithium cell correspondence is provided with a single-unit li-ion cell protection module in the power battery pack; Each single-unit li-ion cell protection module detects output line through overcharging, mistake is put the detection output line and is connected with charge protection signal drive circuit, discharge prevention signal drive circuit and low electric weight alerting signal driving circuit respectively with low electric weight detection output line;
Said single-unit li-ion cell protection module comprises the first battery protection chip, the second battery protection chip, battery interface anode, battery interface negative terminal and over-current detection input end; The positive supply input terminal of the first battery protection chip and the second battery protection chip links to each other through battery interface anode and corresponding single battery are anodal, and the negative supply input terminal of the first battery protection chip and the second battery protection chip links to each other with corresponding single battery negative pole through the battery interface negative terminal; The over-current detection input end that passes through of the first battery protection chip passed through leakage resistance and linked to each other with corresponding single battery negative pole, and wherein, the first battery protection chip is to link to each other with the single battery negative pole of final section with current sampling resistor through the over-current detection input end; The first battery protection chip is to be connected the cell pressure between positive supply input terminal and negative supply input terminal through keeping watch on the second battery protection chip, and the voltage difference between the terminal of over-current detection terminal and negative supply input terminal realizes control charging and discharge; The cooresponding single-unit li-ion cell protection of the single-unit lithium cell module of battery pack negative terminal also detects whole battery group loop whether overcurrent or short circuit through current sampling resistor.
Further, said electrokinetic cell is lithium-ion-power cell or Ni-MH power cell.
Said motor is alternating current dynamo, permagnetic synchronous motor, brshless DC motor; Motor rated power is 300w to 15Kw, and rated voltage is 24V to 96V.
In said low electric weight alerting signal driving circuit, discharge prevention signal drive circuit and the charge protection signal drive circuit; Low electric weight detects output line, cross to put and detect output line and detect output line and link to each other with the grid that PMOS manages through first resistance respectively with overcharging; The drain electrode of each PMOS pipe links to each other with the corresponding positive pole that detects battery respectively; The source electrode of each PMOS pipe is connected the back respectively and connects with second resistance; And link to each other with the grid of the 3rd resistance and NMOS pipe, the source electrode that the 3rd resistance other end and NMOS manage and connecing then links to each other with the negative pole of battery pack negative terminal battery; One end of the 4th resistance links to each other with the positive pole of the positive end cell of battery pack with the emitter-base bandgap grading of first aerotron and after connecing; The base stage of the other end of the 4th resistance and first aerotron also connects the back and links to each other with the emitter-base bandgap grading of second aerotron; The base stage of the collecting electrode of first aerotron and second aerotron also connects the back and links to each other with the 5th resistance; The collecting electrode of the 5th resistance other end and first aerotron also connects the back and links to each other with the input anode of optocoupler, and the input cathode of optocoupler links to each other with the drain electrode that NMOS manages; The mouth collecting electrode of optocoupler links to each other with power supply, and the mouth radio utmost point of optocoupler links to each other with low electric weight remote alarm interface with the 6th resistance, the 6th resistance other end ground connection.
The said first battery protection chip and the second battery protection chip are selected S8211D chip, R5400N or R5403N family chip for use.
Said charge protection signal drive circuit, discharge prevention signal drive circuit and low electric weight alerting signal driving circuit are respectively equipped with charge protection interface, discharge prevention interface and low electric weight remote alarm interface.
With respect to prior art, the present invention has following advantage and beneficial effect:
(1) realizes the interconnection of critical components such as battery protecting plate, electric machine controller, battery charger, constituted the battery-driven car power platform system of control integration;
(2) monitor and manage by battery protecting plate; Carry out charge protection, discharge prevention by electric machine controller to power battery pack; Overcome because of battery protecting plate and battery protecting plate, electric machine controller have been damaged for cut off the electricity supply the suddenly surge current that forms of protection power battery pack; The efficient and the reliability of system have been improved, cost-cutting;
(3) low charge alert can limit the power battery pack discharge current, and the vehicle low cruise sends the audible and visual alarm signal to steerman simultaneously, tells steerman to take appropriate measures, and prevents that vehicle from casting anchor midway, improves drive safety.
(4) for the elec. vehicle that adopts the rareearth permanent-magnet DC brushless motor; When braking, descending, can implement the energy feedback; Under power battery pack quantity of electric charge fully loaded situation; The energy feedback possibly constitute the overcharging of battery, and need protect the electrically-charged battery of energy feedback, prevents over-charging of battery.
Description of drawings
Fig. 1 is the battery-driven car power platform system architecture diagram of control integration.
Fig. 2 is the schematic diagram of the battery protecting plate among Fig. 1.
Fig. 3 is the schematic diagram of the single-unit li-ion cell protection module among Fig. 2.
Fig. 4 is the schematic diagram of the low electric weight alerting signal driving circuit among Fig. 2.
Fig. 5 is the battery-driven car power platform system works flow process block diagram of control integration.
The specific embodiment
For further understanding the present invention, below in conjunction with accompanying drawing and embodiment the present invention is further described, but the scope that the present invention requires to protect is not limited to the scope that embodiment explains.
As shown in Figure 1, a kind of battery-driven car power platform system of control integration comprises power battery pack 1, battery protecting plate 2, electric machine controller 3 and motor 4; Motor 4 is connected with electric machine controller 3 through motor three-phase power line 5, motor speed signal line 6, motor control signal line 7 respectively; Electric machine controller 3 respectively at power battery pack positive pole 13 and the negative pole 14 of power battery pack be connected; Battery protecting plate 2 is connected with electric machine controller 3 with high voltage protective signal wire (SW) 10 through low charge alert signal wire (SW) 8, low-voltage variation signal wire (SW) 9 respectively, sends low charge alert, low-voltage variation and high voltage protective on-off signal to electric machine controller respectively.
As shown in Figure 2; Battery protecting plate 2 comprises a plurality of single-unit li-ion cell protection module 20, low electric weight alerting signal driving circuit 25, discharge prevention signal drive circuit 27 and charge protection signal drive circuit 29, and every joint lithium cell correspondence is provided with a single-unit li-ion cell protection module 20 in the power battery pack 1; Each single-unit li-ion cell protection module 20 detects output line 33 through overcharging, mistake is put detection output line 32 and is connected with charge protection signal drive circuit 29, discharge prevention signal drive circuit 27 and low electric weight alerting signal driving circuit 25 respectively with low electric weight detection output line 31; Charge protection signal drive circuit 29, discharge prevention signal drive circuit 27 and low electric weight alerting signal driving circuit 25 are respectively equipped with charge protection interface 30, discharge prevention interface 28 and low electric weight remote alarm interface 26.
As shown in Figure 3, single-unit li-ion cell protection module comprises the first battery protection chip 21, the second battery protection chip 22, battery interface anode 12, battery interface negative terminal 11, over-current detection input end 24; The first battery protection chip 21 and the second battery protection chip 22 can be selected the S8211D family chip of Seiko or R5400N, the R5403N family chip of RICOH for use; The pin 1,2,3,4,5 of the first battery protection chip 21 and the second battery protection chip 22 is respectively over-current detection terminal VM, positive supply input terminal VDD+, negative supply input terminal VSS-, the discharge sub-DO in control output end, the charging sub-CO in control output end.The positive supply input terminal VDD+ (pin 2) of the first battery protection chip 14 and the second battery protection chip 15 links to each other through battery interface anode 12 and corresponding single battery are anodal, and the negative supply input terminal VSS-(pin 3) of the first battery protection chip 21 and the second battery protection chip 22 links to each other with corresponding single battery negative pole through battery interface negative terminal 11; The over-current detection terminal VM (pin 1) of the first battery protection chip 21 links to each other with corresponding single battery negative pole with overcurrent resistance R vm through over-current detection input end 24, and the over-current detection terminal VM (pin 1) of the first battery protection chip 21 of the cooresponding single-unit li-ion cell protection of battery pack negative terminal module links to each other with the single battery negative pole of final section with current sampling resistor RS through over-current detection input end 24; Low electric weight detects output line 31 and links to each other with the sub-DO in discharge control output end (pin 4) of the second battery protection chip 22; Cross to put and detect output line 32 and link to each other, overcharge detection output line 33 and link to each other with the sub-CO in charging control output end (pin 5) of the first battery protection chip 21 with the sub-DO in discharge control output end (pin 4) of the first battery protection chip 21.The first battery protection chip 21 is to be connected the cell pressure between positive supply input terminal VDD+ terminal and negative supply input terminal VSS-through keeping watch on the second battery protection chip 22, and the voltage difference between over-current detection terminal VM and negative supply input terminal VSS-terminal realizes control charging and discharge.The cooresponding single-unit li-ion cell protection of the single-unit lithium cell module of battery pack negative terminal is except that detecting over-charging of battery, crossing and put, the low electric weight, also detect whole battery group loop whether overcurrent, short circuit through current sampling resistor RS.
Fig. 4 is the schematic diagram of low electric weight alerting signal driving circuit 25.As shown in Figure 4, can establish power battery pack 1 total N single lithium battery, N is the natural number more than or equal to 2, is preferably the natural number of 2-32.N single lithium battery from the battery pack negative terminal respectively mark 1,2 ..., the N battery.The low electric weight of the cooresponding single-unit li-ion cell protection of each single lithium battery module detect output line 31 respectively through first resistance (label be respectively RA11, RA21 ..., RAN1) with PMOS pipe (QA11, QA21 ..., QAN1) grid link to each other; The drain electrode of each PMOS pipe links to each other with the corresponding positive pole that detects battery respectively; The source electrode of each PMOS pipe respectively with second resistance (RA12, RA22 ..., RAN2) connect the back and connect; And link to each other with the grid of the 3rd resistance R A4 and NMOS pipe QA3, the RA4 other end is managed the source electrode of QA3 and is connect with NMOS and then links to each other with the negative pole Vss1 of battery pack negative terminal battery; The end of the 4th resistance R A1 links to each other with the anodal VddN of the positive end cell of battery pack with the emitter-base bandgap grading of the first aerotron QA1 and after connecing; The base stage of the other end of the 4th resistance R A1 and the first aerotron QA1 also connects the back and links to each other with the emitter-base bandgap grading of the second aerotron QA2; The base stage of the collecting electrode of the first aerotron QA1 and the second aerotron QA2 also connects the back and links to each other with resistance the 5th RA2; The collecting electrode of the 5th resistance R A2 other end and the first aerotron QA1 also connects the back and links to each other with the input anode of optocoupler OP1, and the input cathode of optocoupler OP1 links to each other with the drain electrode that NMOS manages QA3.The mouth collecting electrode of optocoupler OP1 links to each other with power supply VCC, and the mouth radio utmost point of optocoupler OP1 links to each other with low electric weight remote alarm interface 26 with the 6th resistance R A3, and the 6th resistance R A3 other end links to each other with power supply ground GND.
The low electric weight of single-unit li-ion cell protection module detect output line 31 signal Ao1, Ao2 ..., when AoN is high level; PMOS pipe QA11, QA21 ..., QAN1 all ends; The grid of NMOS pipe QA3 is a low level; NMOS pipe QA3 ends, and optocoupler OP1 ends, low electric weight remote alarm interface 26 output high level.The low electric weight of single-unit li-ion cell protection module detect output line 31 signal Ao1, Ao2 ..., when AoN has at least a signal to be low level; The conducting of cooresponding PMOS pipe; The grid of NMOS pipe QA3 is a high level; NMOS pipe QA3 conducting, optocoupler OP1 conducting, low electric weight remote alarm interface 26 output low levels.
The schematic diagram of discharge prevention signal drive circuit 27 and charge protection signal drive circuit 29 is identical with the structure of Fig. 4.All can establish total N the single lithium battery of serial lithium battery group, N is the natural number more than or equal to 2, is preferably the natural number of 2-32.N single lithium battery from the battery pack negative terminal respectively mark 1,2 ..., the N battery.The PMOS switching valve can be selected the 2SJ210 of NEC for use, and optocoupler (OP1-OP3) can be selected fairchild's PC817 or the CPC1017N of CLARE for use.
The mistake of single-unit li-ion cell protection module put the signal Do1 that detects output line 32, Do2 ..., when DoN is high level; PMOS pipe Q D11, QD21 ..., QDN 1 all ends; The grid of NMOS pipe QD3 is a low level; NMOS pipe QD3 ends, and optocoupler OP2 ends, discharge prevention interface 28 output high level.The mistake of single-unit li-ion cell protection module put the signal Do1 that detects output line 32, Do2 ..., when DoN has at least a signal to be low level; The conducting of cooresponding PMOS pipe, the grid of NMOS pipe QD3 is a high level, NMOS pipe QD3 conducting; Optocoupler OP2 conducting, discharge prevention interface 8 output low levels.
The signal Co1 that the overcharging of single-unit li-ion cell protection module detected output line 33, Co2 ..., when CoN is high level; PMOS pipe QC11, QC21 ..., QCN1 all ends; The grid of NMOS pipe QC3 is a low level; NMOS pipe QC3 ends, and optocoupler OP3 ends, charge protection interface 30 output high level.The signal Co1 that the overcharging of single-unit li-ion cell protection module detected output line 33, Co2 ..., when CoN has at least a signal to be low level; The conducting of cooresponding PMOS pipe, the grid of NMOS pipe QC3 is a high level, NMOS pipe QC3 conducting; Optocoupler OP3 conducting, charge protection interface 10 output low levels.
The battery-driven car power platform system works flow process of control integration is as shown in Figure 5: V shown in the figure is the real-time voltage value of cell in the power battery pack; During charging; Get the monomer battery voltage value that voltage is the highest in the power battery pack; During discharge, get the monomer battery voltage value that voltage is minimum in the power battery pack, V
MaxBe the charge protection magnitude of voltage that cell allows, V
LimBe cell low voltage alarming value, V
MinDischarge prevention magnitude of voltage for the cell permission.V
Max, V
Lim, V
MinMagnitude of voltage is set according to the charge-discharge characteristic of various batteries such as LiFePO4, LiMn2O4, ternary material lithium ion battery, Ni-MH battery.For example for a LiFePO4 ionization cell, allow charging maximum voltage, discharge low voltage alarm voltage, and minimum sparking voltage can be set at 3.8V, 2.5V, 2.2V respectively.In the battery-driven car normal course of operation, power battery pack provides electric energy to electric machine controller, and the motor-driven battery-driven car moves ahead.Battery protecting plate 2 detects cell running statees in battery pack 1 and the battery pack in real time, battery power discharge in the normal course of operation, and when having the cell minimum voltage to reach low charge alert voltage in the battery pack, i.e. V<v
Lim, battery protecting plate 2 logical low charge alert signal wire (SW)s 8 send on-off signal to electric machine controller 3, and electric machine controller is taked corresponding control policy restriction motor drive current and battery power discharge electric current.Battery pack continues discharge, when monomer battery voltage reaches low-voltage variation voltage, i.e. and V<v
Min, battery protecting plate 2 sends the low-voltage protective switch signal through low-voltage variation signal wire (SW) 9 to electric machine controller, takes corresponding safety method by electric machine controller, cuts off the drive motor main circuit power, prevents the battery pack overdischarge.In charging or the vehicle braking energy feedback process of charging, when having the cell charging valtage to reach in the battery pack to allow the charging maximum voltage, i.e. V>V
Max, battery protecting plate 2 sends the high voltage protective on-off signal through high voltage protective signal wire (SW) 10 to electric machine controller 3, and electric machine controller is taked measure of control, forbids battery pack is continued charging, and the damage battery pack prevents to overcharge.
Embodiment 1: be applied to light-weight electric automobile power plateform system
Light-weight electric automobile design speed per hour 60km/h, the dc brushless motor of employing rating horsepower 7.5W, power battery pack adopts the ferric phosphate lithium cell series connection of 24 120AH, rated voltage 72V.According to the ferric phosphate lithium cell characteristic, battery high voltage protective voltage (charge protection and energy feedback protection voltage) is set at 3.8V, and low-voltage variation voltage is set at 2.5V, and low charge alert voltage is set at 2.8V.
As shown in Figure 1: light-weight electric automobile power plateform system comprises power battery pack 1, battery protecting plate 2, electric machine controller 3 and motor 4; Motor 4 is connected with electric machine controller 3 through motor three-phase power line 5, motor speed signal line 6, motor control signal line 7 respectively; Electric machine controller 3 respectively at power battery pack positive pole 13 and the negative pole 14 of power battery pack be connected; Battery protecting plate 2 is connected with electric machine controller 3 with high voltage protective signal wire (SW) 10 through low charge alert signal wire (SW) 8, low-voltage variation signal wire (SW) 9 respectively, sends low charge alert, low-voltage variation and high voltage protective on-off signal to electric machine controller respectively.
As shown in Figure 5; Light-weight electric automobile power plateform system workflow is following: in process of charging, when certain monomer battery voltage was higher than 3.6V in the power battery pack 1, current charges fell in battery charger; When certain monomer battery voltage was higher than 3.8V in the power battery pack 1, battery charger stopped charging; After stopping charging, when certain monomer battery voltage was lower than 3.6V in the power battery pack 1, battery charger restarted charging.
In the light-weight electric car running process, power battery pack 1 is motor 4 power supplies through electric machine controller 3, drives battery-driven car and moves ahead.Normal, the status informations such as electric weight is low excessively, overvoltage, overcurrent of each cell in the battery protecting plate 2 monitoring power battery pack; Give electric machine controller through the corresponding low charge alert of low charge alert signal wire (SW) 8, low-voltage variation signal wire (SW) 9 and 10 outputs of high voltage protective signal wire (SW), low-voltage variation and high voltage protective on-off signal; And and electric machine controller 6 between mutually feedback interlock; Discharging and recharging safety with the protection electrokinetic cell, concrete control method is following:
1, when the wherein some cells of power battery pack 1 reach 2.8V, battery protecting plate 2 sends low charge alert signal to electric machine controller 4, behind electric machine controller 4 received signals; The power battery pack discharge current is limited; The vehicle low cruise sends the audible and visual alarm signal to steerman simultaneously, tells steerman to take appropriate measures; Prevent that vehicle from casting anchor midway, improve driving safety.
2, when the wherein some monomer battery voltages of power battery pack 1 reach 2.5V; Battery protecting plate 2 sends the low-voltage variation signal to electric machine controller 4; Take corresponding measure by electric machine controller 4, comprise the current limliting reduction of speed, turn-off power battery pack 1 major loop; Prevent the electrokinetic cell overdischarge, the protection cell safety.
3, during the light-weight electric vehicle charging; When some monomer battery voltages reach high pressure 3.8V in the power battery pack 1; Battery protecting plate 2 sends the high voltage protective signal through charging control signal line 10 to battery charger; Charge closing machine and automatic cut-out power battery pack 1 connect with battery charger, prevent battery overcharge.
4, the present invention adopts the rareearth permanent-magnet DC brushless motor; When light-weight electric automobile brake, descending, can implement the energy feedback, under power battery pack 1 quantity of electric charge fully loaded situation, the energy feedback possibly constitute overcharging battery; Need protect the electrically-charged battery of energy feedback; Its method is that battery protecting plate 2 sends the high voltage protective signal to electric machine controller 3, takes corresponding measure by electric machine controller 3 when the wherein some monomer battery voltages of power battery pack 1 reach 3.8V; No longer carry out energy feedback charging, prevent battery overcharge to power battery pack 1.
Claims (6)
1. the battery-driven car power platform system of a control integration is characterized in that, comprises power battery pack, battery protecting plate, electric machine controller and motor; Motor is connected with electric machine controller through motor three-phase power line, motor speed signal line, motor control signal line respectively; Electric machine controller respectively at power battery pack positive pole and the negative pole of power battery pack be connected; Battery protecting plate is connected with electric machine controller with the high voltage protective signal wire (SW) through low charge alert signal wire (SW), low-voltage variation signal wire (SW) respectively, sends low charge alert, low-voltage variation and high voltage protective on-off signal to electric machine controller respectively;
Said power battery pack is made up of through serial or parallel connection a plurality of monomer electrokinetic cells;
Battery protecting plate comprises a plurality of single-unit li-ion cell protection modules, low electric weight alerting signal driving circuit, discharge prevention signal drive circuit and charge protection signal drive circuit, and every joint lithium cell correspondence is provided with a single-unit li-ion cell protection module in the power battery pack; Each single-unit li-ion cell protection module detects output line through overcharging, mistake is put the detection output line and is connected with charge protection signal drive circuit, discharge prevention signal drive circuit and low electric weight alerting signal driving circuit respectively with low electric weight detection output line;
Said single-unit li-ion cell protection module comprises the first battery protection chip, the second battery protection chip, battery interface anode, battery interface negative terminal and over-current detection input end; The positive supply input terminal of the first battery protection chip and the second battery protection chip links to each other through battery interface anode and corresponding single battery are anodal, and the negative supply input terminal of the first battery protection chip and the second battery protection chip links to each other with corresponding single battery negative pole through the battery interface negative terminal; The over-current detection input end that passes through of the first battery protection chip passed through leakage resistance and linked to each other with corresponding single battery negative pole, and wherein, the first battery protection chip is to link to each other with the single battery negative pole of final section with current sampling resistor through the over-current detection input end; The first battery protection chip is to be connected the cell pressure between positive supply input terminal and negative supply input terminal through keeping watch on the second battery protection chip, and the voltage difference between the terminal of over-current detection terminal and negative supply input terminal realizes control charging and discharge; The cooresponding single-unit li-ion cell protection of the single-unit lithium cell module of battery pack negative terminal also detects whole battery group loop whether overcurrent or short circuit through current sampling resistor.
2. the battery-driven car power platform system of control integration according to claim 1 is characterized in that, said electrokinetic cell is lithium-ion-power cell or Ni-MH power cell.
3. the battery-driven car power platform system of control integration according to claim 1 is characterized in that, said motor is alternating current dynamo, permagnetic synchronous motor, brshless DC motor; Motor rated power is 300w to 15Kw, and rated voltage is 24V to 96V.
4. the battery-driven car power platform system of control integration according to claim 1; It is characterized in that; In said low electric weight alerting signal driving circuit, discharge prevention signal drive circuit and the charge protection signal drive circuit; Low electric weight detects output line, cross to put and detect output line and detect output line and link to each other with the grid that PMOS manages through first resistance respectively with overcharging; The drain electrode of each PMOS pipe links to each other with the corresponding positive pole that detects battery respectively; The source electrode of each PMOS pipe is connected the back respectively and connects with second resistance, and links to each other with the grid of the 3rd resistance with the NMOS pipe, the source electrode that the 3rd resistance other end and NMOS manage and connect after link to each other with the negative pole of battery pack negative terminal battery; One end of the 4th resistance links to each other with the positive pole of the positive end cell of battery pack with the emitter-base bandgap grading of first aerotron and after connecing; The base stage of the other end of the 4th resistance and first aerotron also connects the back and links to each other with the emitter-base bandgap grading of second aerotron; The base stage of the collecting electrode of first aerotron and second aerotron also connects the back and links to each other with the 5th resistance; The collecting electrode of the 5th resistance other end and first aerotron also connects the back and links to each other with the input anode of optocoupler, and the input cathode of optocoupler links to each other with the drain electrode that NMOS manages; The mouth collecting electrode of optocoupler links to each other with power supply, and the mouth radio utmost point of optocoupler links to each other with low electric weight remote alarm interface with the 6th resistance, the 6th resistance other end ground connection.
5. the battery-driven car power platform system of control integration according to claim 1 is characterized in that, the said first battery protection chip and the second battery protection chip are selected S8211D chip, R5400N or R5403N family chip for use.
6. the battery-driven car power platform system of control integration according to claim 1; It is characterized in that said charge protection signal drive circuit, discharge prevention signal drive circuit and low electric weight alerting signal driving circuit are respectively equipped with charge protection interface, discharge prevention interface and low electric weight remote alarm interface.
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| CN201210186963.6A CN102815221B (en) | 2012-06-07 | 2012-06-07 | Electromobile power platform system with integrative control |
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| CN201210186963.6A CN102815221B (en) | 2012-06-07 | 2012-06-07 | Electromobile power platform system with integrative control |
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| CN102815221B CN102815221B (en) | 2015-01-14 |
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Cited By (11)
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| CN103227501A (en) * | 2013-04-23 | 2013-07-31 | 山西农业大学 | Stepped breeze energy storage device |
| CN104698895A (en) * | 2015-03-18 | 2015-06-10 | 西平立至电控科技有限公司 | Compatible integrated circuit control method and control device for electric vehicle controller |
| CN106100051A (en) * | 2016-07-18 | 2016-11-09 | 东莞市嘉佰达电子科技有限公司 | A kind of discharge prevention system of battery of electric vehicle group |
| CN106427617A (en) * | 2016-09-21 | 2017-02-22 | 北京元亨天诚通信设备有限公司 | Management device for automated guided vehicle (AGV) lead-acid storage battery |
| CN106740567A (en) * | 2015-11-23 | 2017-05-31 | 现代自动车株式会社 | The overdischarge of vehicle battery prevents devices and methods therefor |
| CN108099624A (en) * | 2016-11-25 | 2018-06-01 | 郑州宇通客车股份有限公司 | A kind of new energy car battery guard method and device based on cell voltage |
| CN109050303A (en) * | 2018-07-30 | 2018-12-21 | 王研 | A kind of electric vehicle low-voltage lifter |
| CN109291914A (en) * | 2017-07-25 | 2019-02-01 | 郑州宇通客车股份有限公司 | A kind of voltage protection method of hybrid vehicle |
| CN110450676A (en) * | 2019-08-19 | 2019-11-15 | 东软睿驰汽车技术（沈阳）有限公司 | A kind of method and device controlling power battery electric current or power |
| CN113036870A (en) * | 2021-03-23 | 2021-06-25 | 潍坊市速远动力科技有限公司 | Lithium battery protection device and method for realizing large-current discharge |
| CN113635765A (en) * | 2021-08-11 | 2021-11-12 | 安徽易合新能源科技有限公司 | 4 string power battery bluetooth communication protection control system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103227501A (en) * | 2013-04-23 | 2013-07-31 | 山西农业大学 | Stepped breeze energy storage device |
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| CN109291914A (en) * | 2017-07-25 | 2019-02-01 | 郑州宇通客车股份有限公司 | A kind of voltage protection method of hybrid vehicle |
| CN109050303A (en) * | 2018-07-30 | 2018-12-21 | 王研 | A kind of electric vehicle low-voltage lifter |
| CN110450676A (en) * | 2019-08-19 | 2019-11-15 | 东软睿驰汽车技术（沈阳）有限公司 | A kind of method and device controlling power battery electric current or power |
| CN113036870A (en) * | 2021-03-23 | 2021-06-25 | 潍坊市速远动力科技有限公司 | Lithium battery protection device and method for realizing large-current discharge |
| CN113036870B (en) * | 2021-03-23 | 2022-12-20 | 潍坊市速远动力科技有限公司 | Lithium battery protection device and method for realizing large-current discharge |
| CN113635765A (en) * | 2021-08-11 | 2021-11-12 | 安徽易合新能源科技有限公司 | 4 string power battery bluetooth communication protection control system |
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