CN206031107U - Electric automobile low pressure storage battery microcomputer management system - Google Patents
Electric automobile low pressure storage battery microcomputer management system Download PDFInfo
- Publication number
- CN206031107U CN206031107U CN201621033376.3U CN201621033376U CN206031107U CN 206031107 U CN206031107 U CN 206031107U CN 201621033376 U CN201621033376 U CN 201621033376U CN 206031107 U CN206031107 U CN 206031107U
- Authority
- CN
- China
- Prior art keywords
- accumulator
- low tension
- electric
- power management
- management system
- 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.)
- Expired - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The utility model provides an electric automobile low pressure storage battery microcomputer management system, including high voltage dc source, charge contact ware, the on -vehicle machine that charges, battery, low tension switchgear, whole car load, integrated hall current sensor, electric power management controller, when low pressure the switch, the battery passes through the low tension switchgear and supplies power for whole car load, when the electric current of load flows through integrated hall current sensor, at its marginal production induced voltage, gathered by the electric power management controller, after the SOC of battery falls to the setting value, the work of electric power management controller control charge contact ware, its work contact turned on high voltage dc source, charge for the battery through the on -vehicle machine that charges, fill after the value of setting for when the electric quantity, electric power management controller disconnection charge contact ware, the on -vehicle quick -witted stop work that charges. The utility model discloses reduce on -vehicle consumption of charging the machine, saved the electric energy.
Description
Technical field
This utility model belongs to electric vehicle engineering field, particularly a kind of electric automobile low tension battery managing electric quantity system
System.
Background technology
At present, the storage battery power supply of New-energy electric vehicle is supplied by DC/DC Vehicular chargers by high voltage power supply
Electricity, its working method are all, directly to Vehicular charger applying high pressure is connected, to make DC/DC vehicle-mounted charges after high voltage component is connected
Machine is worked always, and in accumulator electric-quantity full of afterwards, Vehicular charger still accesses high-tension circuit, causes the waste of electric energy, meanwhile,
As Vehicular charger is constantly in working condition, make accumulator fill state in void, the power supply of system by Vehicular charger and
Accumulator shared, makes charger internal circuit persistent fever, the working life of Vehicular charger is impacted；Whole
In car low pressure after electricity, before high pressure access failure, low-pressure system is in running order all the time, prolonged low-pressure system work, makes
The mistake of accumulator electric-quantity is put, and causes power shortage, makes accumulator premature aging, and have impact on accumulator has made the life-span, have impact on car load
Normal use, in order to adapt to the trend of this development, it is ensured that electricity suppl is stablized, it is necessary to strengthen the electricity to low tension battery
Management, is monitored by the voltage to accumulator, electric current, temperature etc., so as to realize the measurement of electricity, improves the reliability of system
Property, reduce maintenance cost, and save energy.
Utility model content
For solving above-mentioned technical problem, this utility model provides a kind of electric automobile low tension battery managing electric quantity system
System, it include high-voltage DC power supply, charging contactor, Vehicular charger, accumulator, low tension switch, car load load, it is integrated suddenly
That current sensor, managing electric quantity controller；
The high voltage power supply is connected with charging contactor, and the charging contactor is connected with the Vehicular charger,
The Vehicular charger is connected with accumulator anode, automobile chassis, and the low tension switch is connected with accumulator phase anode, whole
Car load is connected with accumulator anode by the low tension switch, and the integrated Hall current sensor is negative with accumulator
The chassis ground of end and automobile is connected, and the managing electric quantity controller is connected with integrated Hall current sensor and carries out electricity
Stream Real-time Collection.
It is preferred that when described low tension switch is connected, accumulator passes through low tension switch for car load load supplying, car load load
Electric current flow through the negative terminal that integrated Hall current sensor returns to battery, integrated Hall current sensor is by the electric discharge flow through
Electric current is converted to corresponding DC voltage and is sent to managing electric quantity controller, and is acquired.
It is preferred that the charging and discharging currents of described managing electric quantity controller Real-time Collection accumulator, voltage, temperature information,
And the SOC to accumulator is estimated.
It is preferred that after the SOC of described accumulator drops to setting value, managing electric quantity controller control charging contactor work
Make, its operating contact connects high-voltage DC power supply, is charged for accumulator by Vehicular charger.
It is preferred that after described accumulator electric-quantity is charged to the value of setting, managing electric quantity controller disconnects charging contactor, car
Carry charger to quit work.
It is preferred that described managing electric quantity controller is in the course of the work in real time by the battery tension for collecting, electric current
Information sends instrument to by CAN communication interface.
This utility model has the advantages that：
This utility model provide electric automobile low tension battery power management system when low tension switch is connected, accumulator
It is car load load supplying by low tension switch, when the electric current of load flows through integrated Hall current sensor, produces in its negative side
Induced voltage, is gathered by managing electric quantity controller, and managing electric quantity controller also gathers the ginseng such as voltage, temperature of accumulator simultaneously
Number, carries out SOC estimations after being integrated to the electric current of accumulator, with the electric discharge of load, when the SOC of accumulator drops to setting value
Afterwards, managing electric quantity controller control charging contactor work, its operating contact connects high-voltage DC power supply, by Vehicular charger
It is charged for accumulator, after electricity is charged to the value of setting, managing electric quantity controller disconnects charging contactor, Vehicular charger
Quit work.The power consumption of Vehicular charger is reduced, electric energy is saved.
Certainly, implement arbitrary product of the present utility model to it is not absolutely required to while reaching all the above advantage.
Description of the drawings
In order to be illustrated more clearly that the technical scheme of this utility model embodiment, below will be to making required for embodiment description
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present utility model,
For those of ordinary skill in the art, on the premise of not paying creative work, can be with according to these accompanying drawings acquisitions
Other accompanying drawings.
The electric automobile low tension battery power management system schematic diagram that Fig. 1 is provided for this utility model embodiment；
The managing electric quantity controller operating diagram that Fig. 2 is provided for this utility model embodiment.
Specific embodiment
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only this utility model a part of embodiment, rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of creative work is made
The all other embodiment for being obtained, belongs to the scope of this utility model protection.
As shown in figure 1, this utility model embodiment provides a kind of electric automobile low tension battery power management system, its
Including high-voltage DC power supply, charging contactor, Vehicular charger, accumulator, low tension switch, car load load, integrated Hall electricity
Flow sensor, managing electric quantity controller；
The high voltage power supply is connected with charging contactor, and the charging contactor is connected with the Vehicular charger,
The Vehicular charger is connected with accumulator anode, automobile chassis, and the low tension switch is connected with accumulator phase anode, whole
Car load is connected with accumulator anode by the low tension switch, and the integrated Hall current sensor is negative with accumulator
The chassis ground of end and automobile is connected, and the managing electric quantity controller is connected with integrated Hall current sensor and carries out electricity
Stream Real-time Collection.
This utility model embodiment provide electric automobile whole load include various electrical control unit units, light,
The 24V electric power systems such as windscreen wiper, motor, fan, various door pumps, valve, instrument, different types of vehicle its load current differ
Sample, during its work, total current about more than ten peaces between tens peaces, controlled by low tension switch by the working power of car load load
System, after low tension switch is connected, 24V power supplys are car load load supplying by low tension switch.
The input of Vehicular charger is connected to high-voltage DC power supply, and its working condition is touched by the normally opened of charging contactor
Point be controlled, charging contactor is controlled by managing electric quantity controller, when managing electric quantity controller control port export one it is high
During level, charging contactor work, its opened point are connected, and the anode of high voltage power supply accesses Vehicular charger, and Vehicular charger is opened
Beginning work, its outfan produce a DC voltage more slightly higher than battery tension, start to be charged for accumulator, and charge electricity
In tens peaces to changing between more than 100 peaces, as accumulator SOC slowly rises, its charging current is tapered into stream, until electricity
Amount is full of and enters floating charge state.
Integrated Hall current sensor according to different system power demands, by two Hall effect linear integrated circuit
Chip is composed in parallel, as shown in Fig. 2 its single electric current induction range is respectively 0A to 50A and 50A to 200A, according to former limit
Curent change, its secondary export proportional pinpoint accuracy, a low noise output voltage signal, reduce to greatest extent whole
Offset voltage in individual operating temperature range.The package dimension of Hall effect linear integrated circuit is very little, while built-in electricity
Stream isolation features, can very easily realize the current detecting application on flash or low side, adopt PCB layouts according to system requirements
Mode, is positioned between accumulator negative terminal and chassis ground.The Hall effect that system employs two different current values is linear
IC chip is in parallel, when accumulator carries out discharge and recharge, due to curent change frequently, Full Vehicle System operationally, its
Charging and discharging currents are larger, now, using the current sample sensor of 50A to 200A, it is ensured that the wide scope of current sample,
When system is in static, most of low-pressure system electrical load does not work, and now, the discharge current of car load is less, in several peaces
To more than ten peace left and right, if now using the current sample sensor of 50 to 200A, certain error, the product of error can be formed
It is tired, deviation can be produced to the SOC of accumulator estimations, in the mode that two Hall effect linear integrated circuit chips are composed in parallel
Afterwards, when system power change is less, the current sample sensor of 0 to 50A is in higher sampling precision, now, electricity
Management Controller is then integrated computing using the current sample information on this road, neglects the sampling of 50 to 200A current sensors
Value, when electric current is increased above 50A, the output of the current sample sensor of 0 to 50A tends to full conjunction, and sensor output is maximum
Value, now then neglects the sampled value of 0 to 50A current sensors, electricity pipe using the sampled value of 50 to 200A current sensors
By a voltage logic circuit inside reason controller, changed according to different sample rate currents, carry out logic switch, realized to two
The selection sampling of road voltage, advantage of this is that and ensure that the overall linearity responded during electric current value changes, and sampling precision
All the time excellent precision is in, so as to improve accurate estimation of the quantity of electricity controller to SOC.
Managing electric quantity controller is intelligent acquisition, calculating, an output control unit, by single-chip microcomputer and periphery collection system
System, control circuit, CAN communication interface etc. constitute, as shown in Fig. 2 the current acquisition scope of current sensor 1 be 0 to
50A, the acquisition range of current sensor 2 is 50 to 200A, and the two sensor parallels are in negative terminal and the car load load of accumulator
Chassis ground between, when there is electric current to flow through accumulator, flow through the electric current of sensor and produce a linear voltage mould in its secondary
Intend signal, the signal is gathered by the ADC sample circuits of acquisition system, and is converted into current value, then carries out electric current product
Partite transport is calculated, and is finally converted to the SOC value of accumulator according to the other parameters of system, and is sent instrument to by CAN communication interface；
Acquisition system also gathers the parameters such as the voltage of accumulator, temperature simultaneously, as auxiliary operation parameter, when SOC is too low,
Acquisition system connects charging contactor by control circuit, and Vehicular charger work, is that accumulator is charged, such as
When fruit charging contactor is connected, Vehicular charger does not work or high pressure access failure, and acquisition system can export a warning
Signal, while sending information by CAN communication interface to instrument, reminds driver to notice that accumulator electric-quantity is too low.
After control circuit connects charging contactor, high voltage power supply is linked into Vehicular charger, now Vehicular charger work
Make, a voltage is exported to accumulator, now, in opposite direction when its sense of current is discharged with storage battery, the current signal
By current sensor gather, if now low tension switch disconnect, the electric current that current sensor is collected for Vehicular charger to
The electric current that accumulator charges, conversely, as low tension switch is connected, car load loaded work piece, the electricity that now current sensor is collected
Flow for car load load current and battery charging current sum, the power supply of car load load is held jointly by accumulator and Vehicular charger
Load, as the electric current of Vehicular charger is larger, its total current still shows as charging current, and the integrated electric currents of current signal Jing are passed
After sensor collection, electricity reason Management Controller is sent to, and is converted to charging current, managing electric quantity controller is according to accumulator
The parameters such as voltage, charging current, temperature, carry out SOC estimations, when battery tension is charged to the magnitude of voltage or SOC that set as 100%
When, Vehicular charger proceeds to floating charge state, and now, managing electric quantity controller disconnects charging contactor, and the power supply of car load load turns
Undertaken by accumulator, Vehicular charger quits work, reduce the power consumption of Vehicular charger, save electric energy.
This utility model preferred embodiment disclosed above is only intended to help and illustrates this utility model.Preferred embodiment is simultaneously
Without all of details of detailed descriptionthe, it is only described specific embodiment also not limit the utility model.Obviously, according to this theory
The content of bright book, can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to preferably
Principle of the present utility model and practical application is explained, so that skilled artisan can be best understood by and utilize this
Utility model.This utility model is only limited by claims and its four corner and equivalent.
Claims (6)
1. a kind of electric automobile low tension battery power management system, it is characterised in that：Including high-voltage DC power supply, charge contact
Device, Vehicular charger, accumulator, low tension switch, car load load, integrated Hall current sensor, managing electric quantity controller；
The high voltage power supply is connected with charging contactor, and the charging contactor is connected with the Vehicular charger, described
Vehicular charger is connected with accumulator anode, automobile chassis, and the low tension switch is connected with accumulator phase anode, and car load is born
Load is connected with accumulator anode by the low tension switch, the negative terminal of the integrated Hall current sensor and accumulator and
The chassis ground of automobile is connected, and the managing electric quantity controller is connected with integrated Hall current sensor and carries out electric current reality
When gather.
2. a kind of electric automobile low tension battery power management system according to claim 1, it is characterised in that：Described
When low tension switch is connected, accumulator passes through low tension switch for car load load supplying, and the electric current of car load load flows through integrated Hall
Current sensor returns to the negative terminal of battery, and the discharge current for flowing through is converted to corresponding direct current by integrated Hall current sensor
Voltage is sent to managing electric quantity controller, and is acquired.
3. a kind of electric automobile low tension battery power management system according to claim 1, it is characterised in that：Described
The charging and discharging currents of managing electric quantity controller Real-time Collection accumulator, voltage, temperature information, and obtain the SOC of accumulator.
4. a kind of electric automobile low tension battery power management system according to claim 1, it is characterised in that：Described
After the SOC of accumulator drops to setting value, high straightening is connected in the control charging contactor work of managing electric quantity controller, its operating contact
Stream power supply, is charged for accumulator by Vehicular charger.
5. a kind of electric automobile low tension battery power management system according to claim 1, it is characterised in that：Described
After accumulator electric-quantity is charged to the value of setting, managing electric quantity controller disconnects charging contactor, and Vehicular charger quits work.
6. a kind of electric automobile low tension battery power management system according to claim 1, it is characterised in that：Described
The battery tension for collecting, current information are passed by managing electric quantity controller in the course of the work in real time by CAN communication interface
Give instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621033376.3U CN206031107U (en) | 2016-08-31 | 2016-08-31 | Electric automobile low pressure storage battery microcomputer management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621033376.3U CN206031107U (en) | 2016-08-31 | 2016-08-31 | Electric automobile low pressure storage battery microcomputer management system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206031107U true CN206031107U (en) | 2017-03-22 |
Family
ID=58298777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621033376.3U Expired - Fee Related CN206031107U (en) | 2016-08-31 | 2016-08-31 | Electric automobile low pressure storage battery microcomputer management system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206031107U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106314179A (en) * | 2016-08-31 | 2017-01-11 | 安徽安凯汽车股份有限公司 | Electric power management system for low tension battery of electric car |
| CN107627852A (en) * | 2017-09-18 | 2018-01-26 | 上海康丘乐电子电器科技有限公司 | A kind of low-voltage power supply system and electric automobile applied to electric automobile |
| CN114572120A (en) * | 2020-11-30 | 2022-06-03 | 中车时代电动汽车股份有限公司 | Switch box of double-source trolley bus |
-
2016
- 2016-08-31 CN CN201621033376.3U patent/CN206031107U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106314179A (en) * | 2016-08-31 | 2017-01-11 | 安徽安凯汽车股份有限公司 | Electric power management system for low tension battery of electric car |
| CN107627852A (en) * | 2017-09-18 | 2018-01-26 | 上海康丘乐电子电器科技有限公司 | A kind of low-voltage power supply system and electric automobile applied to electric automobile |
| CN114572120A (en) * | 2020-11-30 | 2022-06-03 | 中车时代电动汽车股份有限公司 | Switch box of double-source trolley bus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106314179A (en) | Electric power management system for low tension battery of electric car | |
| CN103901354B (en) | A kind of electric automobile vehicle-mounted electrokinetic cell SOC Forecasting Methodology | |
| CN104852435B (en) | A kind of serial lithium battery management system used for electric vehicle and its management method | |
| CN102231546B (en) | Battery management system with balanced charge and discharge functions and control method thereof | |
| CN103809125B (en) | The residue loading capacity method of estimation of lithium ion battery and system | |
| CN110549876B (en) | Energy output control method and device and hydrogen fuel hybrid electric vehicle | |
| CN103823185B (en) | Accumulating system and the method calculating full charge capacity | |
| CN101634687B (en) | Method for measuring SOC value of battery of hybrid vehicle | |
| CN106042972B (en) | A kind of device to charge mutually for electric vehicle | |
| CN102035053B (en) | Charging method of charging pile for supplying charging service to electromobile | |
| CN203445668U (en) | Distributed battery management system | |
| CN103064026B (en) | Vehicle battery remaining capacity monitoring method | |
| CN206031107U (en) | Electric automobile low pressure storage battery microcomputer management system | |
| CN105050855A (en) | Electrical storage system, and full charge capacity estimation method for electrical storage device | |
| CN107406004A (en) | Method and apparatus for the value of the energy state that determines the battery in vehicle | |
| CN104723894B (en) | Vehicle, method and system for battery parameter estimation | |
| US20170057372A1 (en) | Electric or hybrid vehicle battery pack voltage measurement | |
| CN106199437A (en) | Electromobile battery dump energy monitoring method and monitoring system thereof | |
| CN103675698A (en) | Power battery charge state estimating device and method | |
| CN107819164A (en) | A kind of battery management system with incipient fault analyzing and diagnosing function | |
| CN109606200A (en) | A kind of new energy car battery management system | |
| CN107452998A (en) | Vehicle mounted dynamic battery balance policy based on battery charge state | |
| CN111483350A (en) | Balance and micro-short circuit detection method for power battery pack | |
| CN102419422B (en) | Method for estimating stage of charge (SOC) | |
| CN207481815U (en) | Electric system above and below electric automobile high-voltage |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170322 Termination date: 20180831 |