CN205846790U - Electric motor car and power-supply system - Google Patents
Electric motor car and power-supply system Download PDFInfo
- Publication number
- CN205846790U CN205846790U CN201620752000.1U CN201620752000U CN205846790U CN 205846790 U CN205846790 U CN 205846790U CN 201620752000 U CN201620752000 U CN 201620752000U CN 205846790 U CN205846790 U CN 205846790U
- Authority
- CN
- China
- Prior art keywords
- field effect
- effect transistor
- charge
- control unit
- battery module
- 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.)
- Active
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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- 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
This utility model provides a kind of electric motor car and power-supply system, power-supply system includes control unit, multiple charge-discharge circuits being connected in series and multiple battery module, charge-discharge circuit includes the first field effect transistor and the second field effect transistor, the drain electrode of the first field effect transistor electrically connects with the source electrode of the second field effect transistor, the source electrode of the first field effect transistor is connected with the positive electrical of battery module, the drain electrode of the second field effect transistor is connected with the negative electricity of battery module, first control signal of the grid reception control unit output of the first field effect transistor, second control signal of the grid reception control unit output of the second field effect transistor, battery module is to control unit output feedback signal.And the electric motor car of power-supply system is installed.Make control unit control the break-make of field effect transistor according to feedback signal, by blocking or conducting field effect transistor, effectively protect battery life and realize balance charge/discharge.
Description
Technical field
This utility model relates to electric automobiles, particularly relates to a kind of electric motor car and power-supply system.
Background technology
Electric motor car because of its not burns gasoline produce power, there is environmental protection, pollute little feature, at tourist attraction etc. to environment
Require that higher place is widely used.Existing electric motor car is provided with an electric machine controller, for power module is defeated
The DC source gone out is converted into three-phase alternating-current supply and drives electric machine rotation.
Existing power supply module typically all has multiple battery to be composed in series, when charging power module, by series connection
Set of cells connects the positive-negative output end of charger, the most just can complete the charging of all batteries, then due to the electricity of different batteries
Amount surplus all differs, therefore will have some batteries when charging and have been filled with, and other batteries are not the most full of, and lead
Cause Unbalance charging, then affect the service life of battery, it addition, when a certain cell damage can not use, and other batteries
Still can normally use, but the connected mode of its series connection also results in whole power module and can not work, impact is normal then
Use and the unnecessary wasting of resources.
Summary of the invention
First purpose of the present utility model is to provide a kind of electric motor car realizing balance charge/discharge.
Second purpose of the present utility model is to provide a kind of power-supply system realizing balance charge/discharge.
In order to realize the first purpose of the present utility model, this utility model provides a kind of electric motor car, including power-supply system, electricity
Machine controller and motor, power-supply system is connected with electric machine controller, and electric machine controller is connected with motor, wherein, power-supply system bag
Include control unit, multiple charge-discharge circuit being connected in series and multiple battery module, a charge-discharge circuit and a battery even
Connecing, charge-discharge circuit includes the first field effect transistor and the second field effect transistor, the drain electrode of the first field effect transistor and the second field effect transistor
Source electrode electrical connection, the source electrode of the first field effect transistor is connected with the positive electrical of battery module, the drain electrode of the second field effect transistor and electric
The negative electricity of pond module connects, the source electrode of the second field effect transistor of a charge-discharge circuit and the first of another charge-discharge circuit
The source electrode electrical connection of field effect transistor, the first control signal of the grid reception control unit output of the first field effect transistor, second
Second control signal of the grid reception control unit output of effect pipe, battery module is to control unit output feedback signal.
From such scheme, by the charge-discharge circuit of multiple series connection, and the field effect that charge-discharge circuit is arranged in parallel
Pipe, a wherein road series-connected battery modules, and obtain feedback signal by control unit, would know that battery mould according to feedback signal
The state (voltage, temperature, electric current etc.) of block so that control unit controls the break-make of field effect transistor according to feedback signal, as a certain
After battery is at full charge, the field effect transistor on this road can be blocked, turn on another field effect transistor, thus effectively protect battery life and reality
Existing balance charge/discharge.
In order to realize the second purpose of the present utility model, this utility model provides a kind of power-supply system, wherein, including controlling
Unit, multiple charge-discharge circuit being connected in series and multiple battery module, a charge-discharge circuit and a battery connect, charge and discharge
Electricity circuit includes the first field effect transistor and the second field effect transistor, and the drain electrode of the first field effect transistor is electric with the source electrode of the second field effect transistor
Connecting, the source electrode of the first field effect transistor is connected with the positive electrical of battery module, the drain electrode of the second field effect transistor and battery module
Negative electricity connects, the source electrode of the second field effect transistor of a charge-discharge circuit and the first field effect transistor of another charge-discharge circuit
Source electrode electrical connection, the first field effect transistor grid reception control unit output the first control signal, the second field effect transistor
Second control signal of grid reception control unit output, battery module is to control unit output feedback signal.
From such scheme, by the charge-discharge circuit of multiple series connection, and the field effect that charge-discharge circuit is arranged in parallel
Pipe, a wherein road series-connected battery modules, and obtain feedback signal by control unit, would know that battery mould according to feedback signal
The state (voltage, temperature, electric current etc.) of block so that control unit controls the break-make of field effect transistor according to feedback signal, as a certain
After battery is at full charge, the field effect transistor on this road can be blocked, turn on another field effect transistor, thus effectively protect battery life and reality
Existing balance charge/discharge.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of this utility model power-supply system embodiment.
Fig. 2 is the first charging principle figure of this utility model power-supply system embodiment.
Fig. 3 is the second charging principle figure of this utility model power-supply system embodiment.
Fig. 4 is the discharge principle figure of this utility model power-supply system embodiment.
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Detailed description of the invention
Power-supply system embodiment:
With reference to Fig. 1, power-supply system include control unit (not shown), four charge-discharge circuit E1 being connected in series, E2,
E3, E4 and four battery modules B1, B2, B3, B4, a charge-discharge circuit and a battery connect.Control unit can use tool
There are the MCU of operation control function, single-chip microcomputer or processor.
Owing to the structure of charge-discharge circuit is identical, illustrate as a example by charge-discharge circuit E1 below, charge-discharge circuit E1
Including field effect transistor Q1 and field effect transistor Q2, field effect transistor Q1 and field effect transistor Q2 can use enhancement mode N-channel MOS pipe and
The MOS switch pipe of the P-channel metal-oxide-semiconductor of enhancement mode, and there is a parasitic diode between the drain and source.Field effect transistor Q1
Drain electrode electrically connect with the source electrode of field effect transistor Q2, the source electrode of field effect transistor Q1 is connected with the positive electrical of battery module B1, field imitate
Should the drain electrode of pipe Q2 be connected with the negative electricity of battery module B1, the source electrode of field effect transistor Q2 of charge-discharge circuit E1 and discharge and recharge electricity
The source electrode electrical connection of field effect transistor Q3 of road E2.The drain electrode of field effect transistor Q1 is connected with the cathode output end of charger, field effect
The drain electrode of pipe Q8 is connected with the cathode output end of charger.The grid of field effect transistor Q1 electrically connects with control unit, field effect transistor
The grid of Q2 electrically connects with control unit.
Charging method embodiment:
With reference to Fig. 2, during charging, charging system performs charging method, owing to battery module includes accumulator, Boost circuit
With BMC power management module, battery module B1, B2, B3, B4 export respective feedback signal, feedback letter to control unit respectively
Number including voltage feedback signal, temperature feedback signal, current feedback signal and fault feedback signal etc., control unit would know that respectively
The state of individual battery module, exports the control of correspondence then.Such as, control unit judges that whether voltage feedback signal is less than threshold
Value, if the magnitude of voltage of battery module B1, B2, B3, B4 is respectively less than threshold value, then it represents that battery module is required to charging, controls single
Unit respectively to field effect transistor Q1, Q3, Q5, Q7 output conducting control control signal, control unit respectively to field effect transistor Q2, Q4,
Q6, Q8 output blocks and controls control signal, and electric current, as shown in Figure 2 through field effect transistor Q1, turn on, gives battery Q3, Q5, Q7
Module equalizaing charge.
With reference to Fig. 3, when battery module B1 is at full charge, control unit can judge to show that it is big by voltage feedback signal
In or equal to threshold value, then control unit blocks control signal to the output of field effect transistor Q1, and control unit exports to field effect transistor Q1
Blocking control signal, electric current, as shown in Figure 3 through field effect transistor Q2, turn on Q3, Q5, Q7, no longer gives battery module B1 and fills
Electricity, and give battery module B2, B3, B4 and continue equalizaing charge, and make power-supply system equalizaing charge.
Charging method embodiment:
With reference to Fig. 4, during electric discharge, if the magnitude of voltage of battery module B1, B2, B3, B4 is all higher than or equal to threshold value, then shows
The electricity of battery module is in normal level, can normal power supply electric discharge, i.e. control unit respectively to field effect transistor Q1, Q3, Q5,
Q7 output conducting controls control signal, and control unit blocks control control signal to field effect transistor Q2, Q4, Q6, Q8 output respectively.
When the electricity deficiency of battery module B2, when i.e. the magnitude of voltage of battery module B2 is less than threshold value, control unit is to field effect transistor Q4
Output conductivity control signal, control unit blocks control signal to the output of field effect transistor Q3, and electric current is as shown in Figure 4 through field effect
The conducting of pipe Q7, Q5, Q4, Q1 ground, battery module B2 the most outwards discharges, and battery module B1, B3, B4 continue outwards electric discharge.
It addition, no matter during in charging or during electric discharge, battery module such as breaks down, such as battery module B2 breaks down
Time, battery module B2 exports fault-signal to control unit, and control unit exports to block to the grid of field effect transistor Q3 and controls letter
Number, control unit exports conductivity control signal to the grid of field effect transistor Q4 so that the fault of battery module B2 does not affect power supply
The normal operation of system, and make power-supply system balanced discharge.
Electric motor car embodiment:
Electric motor car includes power-supply system, electric machine controller and motor, and power-supply system is connected with electric machine controller and to motor
Controller is powered, and electric machine controller is connected with motor and controls motor rotation.
Power-supply system includes control unit, multiple charge-discharge circuit being connected in series and multiple battery module, a charge and discharge
Electricity circuit and a battery connect, and charge-discharge circuit includes the first field effect transistor and the second field effect transistor, the first field effect transistor
Drain electrode electrically connects with the source electrode of the second field effect transistor, and the source electrode of the first field effect transistor is connected with the positive electrical of battery module, and second
The drain electrode of field effect transistor is connected with the negative electricity of battery module, the source electrode of the second field effect transistor of a charge-discharge circuit and another
The source electrode electrical connection of the first field effect transistor of individual charge-discharge circuit, the of the grid reception control unit output of the first field effect transistor
One control signal, the second control signal of the grid reception control unit output of the second field effect transistor, battery module is single to controlling
Unit's output feedback signal.
Therefore, by the charge-discharge circuit of multiple series connection, and the field effect transistor that charge-discharge circuit is arranged in parallel, wherein
One road series-connected battery modules, and obtain feedback signal by control unit, the shape of battery module is would know that according to feedback signal
State (voltage, temperature, electric current etc.) so that control unit controls the break-make of field effect transistor according to feedback signal, as a certain battery fills
After Full Charge Capacity, the field effect transistor on this road can be blocked, turn on another field effect transistor, thus effectively protection battery life and realization equalize
Discharge and recharge.
Claims (2)
1. electric motor car, including power-supply system, electric machine controller and motor, described power-supply system is connected with electric machine controller, described
Electric machine controller is connected with described motor；
It is characterized in that:
Described power-supply system includes control unit, multiple charge-discharge circuit being connected in series and multiple battery module, described in one
Charge-discharge circuit and a described battery connect；
Charge-discharge circuit includes the first field effect transistor and the second field effect transistor, the drain electrode of described first field effect transistor and described second
The source electrode electrical connection of field effect transistor, the source electrode of described first field effect transistor is connected with the positive electrical of described battery module, and described the
The drain electrode of two field effect transistor is connected with the negative electricity of described battery module, described second field effect of a described charge-discharge circuit
The source electrode of pipe electrically connects with the source electrode of described first field effect transistor of charge-discharge circuit another described；
The grid of described first field effect transistor receives the first control signal of described control unit output, described second field effect transistor
Grid receive described control unit output the second control signal；
Described battery module is to described control unit output feedback signal.
2. power-supply system, it is characterised in that include control unit, multiple charge-discharge circuit being connected in series and multiple battery mould
Block, a described charge-discharge circuit and a described battery connect；
Charge-discharge circuit includes the first field effect transistor and the second field effect transistor, the drain electrode of described first field effect transistor and described second
The source electrode electrical connection of field effect transistor, the source electrode of described first field effect transistor is connected with the positive electrical of described battery module, and described the
The drain electrode of two field effect transistor is connected with the negative electricity of described battery module, described second field effect of a described charge-discharge circuit
The source electrode of pipe electrically connects with the source electrode of described first field effect transistor of charge-discharge circuit another described；
The grid of described first field effect transistor receives the first control signal of described control unit output, described second field effect transistor
Grid receive described control unit output the second control signal；
Described battery module is to described control unit output feedback signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620752000.1U CN205846790U (en) | 2016-07-14 | 2016-07-14 | Electric motor car and power-supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620752000.1U CN205846790U (en) | 2016-07-14 | 2016-07-14 | Electric motor car and power-supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205846790U true CN205846790U (en) | 2016-12-28 |
Family
ID=57618627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620752000.1U Active CN205846790U (en) | 2016-07-14 | 2016-07-14 | Electric motor car and power-supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205846790U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106059002A (en) * | 2016-07-14 | 2016-10-26 | 珠海英搏尔电气股份有限公司 | Electric vehicle, power supply system and charge and discharge method |
| CN112349982A (en) * | 2019-08-07 | 2021-02-09 | 北京小米移动软件有限公司 | Battery, charging method and charging device |
-
2016
- 2016-07-14 CN CN201620752000.1U patent/CN205846790U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106059002A (en) * | 2016-07-14 | 2016-10-26 | 珠海英搏尔电气股份有限公司 | Electric vehicle, power supply system and charge and discharge method |
| CN112349982A (en) * | 2019-08-07 | 2021-02-09 | 北京小米移动软件有限公司 | Battery, charging method and charging device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204557082U (en) | Pure electric vehicle controller power waken system and power supply wake-up circuit | |
| EP3508371A1 (en) | Charging post | |
| CN102624050B (en) | Battery management system capable of automatically shutting off unavailable units in serial-connection battery pack | |
| US9219373B2 (en) | Lossless charger | |
| CN106059002A (en) | Electric vehicle, power supply system and charge and discharge method | |
| CN102222949A (en) | Device and method for managing batteries | |
| CN205160118U (en) | Equalization circuit for battery pack | |
| CN104300606A (en) | Multi-string battery protection system | |
| CN110103774B (en) | Apparatus for battery-driven electric vehicle and method of operating the same | |
| CN102983608A (en) | Composite lithium battery and supercapacitor power supply control device for electromobile | |
| CN205846790U (en) | Electric motor car and power-supply system | |
| CN109088111B (en) | Lithium battery and lead-acid battery hybrid control system and method for new energy automobile | |
| CN107154666A (en) | A kind of batteries management system and electric power system | |
| CN202535104U (en) | Battery management system capable of automatically cutting off failure units in series-connected battery pack | |
| EP4304042A1 (en) | Energy storage system, control method for energy storage system, and photovoltaic power generation system | |
| CN109638904A (en) | Lithium battery protection board | |
| CN202405763U (en) | Over-discharge protection circuit and battery utilizing same | |
| CN211790810U (en) | Charging system, charger, battery pack and movable platform | |
| CN102769153B (en) | A kind of method for charging battery pack and implement device thereof | |
| CN203398769U (en) | Battery reverse-connection resistant protective circuit of direct current charging pile controller | |
| CN2922234Y (en) | Over-discharge protecting circuit for power lithium ion cell | |
| CN103236725A (en) | Power supply method of solar controller control circuit and circuit thereof | |
| CN208028656U (en) | Based on solar powered uninterrupted accessory power supply control device | |
| CN206977128U (en) | The battery protection system of new energy | |
| CN105958629A (en) | BMS power supply device and power supply method for electric automobile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |