CN208874323U - Electromobile modularization inverter high pressure turns low pressure transformation charging circuit - Google Patents
Electromobile modularization inverter high pressure turns low pressure transformation charging circuit Download PDFInfo
- Publication number
- CN208874323U CN208874323U CN201821658445.9U CN201821658445U CN208874323U CN 208874323 U CN208874323 U CN 208874323U CN 201821658445 U CN201821658445 U CN 201821658445U CN 208874323 U CN208874323 U CN 208874323U
- Authority
- CN
- China
- Prior art keywords
- phase
- battery
- inversion unit
- phase battery
- modularization
- 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
Landscapes
- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model proposes electromobile modularization inverter high pressures to turn low pressure transformation charging circuit, its structure includes modularization three-phase low-voltage DC-DC converter, 3 parallel connections and the identical battery inversion unit of structure (including A phase battery inversion unit, B phase battery inversion unit, C phase battery inversion unit) and three-phase drive motor；Wherein A, B, C three-phase input end of modularization three-phase low-voltage DC-DC converter are correspondingly connected with the output end in 3 battery inversion units with the three-phase battery module of group respectively, and the inverter output end of 3 battery inversion units is separately connected A, B, C three-phase input end of three-phase drive motor.Advantage: 1) it is easy to operate, mitigate circuit load；2) low-voltage power electronic device is used, device cost is reduced；It 3) can be with the electricity of three battery packs of active equalization in control；4) conversion efficiency can be improved, reduce cooling requirement.
Description
Technical field
The utility model relates to a kind of electromobile modularization inverter high pressures to turn low pressure transformation charging circuit, belong to
Electric motor car energy technical field of power systems.
Background technique
A 12V(passenger car is equipped on traditional automobile) or 24V(commercial vehicle) A-battery to the electricity of automobile
Gas system is powered, and when automobilism, car engine machine driving generator is charged the battery, and guarantees that battery has
Enough electricity are supplied to the electricity system on automobile.It is no longer equipped with engine on many electric cars at present, but is used high
Piezoelectric battery packet connects inverter and motor to drive automobile, while retaining the original low-voltage electric system of automobile.
In electric car, it cannot be charged using traditional engine drive mode to it to A-battery.Such as Fig. 1 institute
Show, realizes that charge function, ride-type electric car make usually using several concatenated high drive battery packs currently on the market
The high pressure that the common operating voltage of high drive battery pack is 350V or more, and the voltage of A-battery to be charged is general
It is 12V, therefore, needs a high pressure to the direct current DC-DC converter of low pressure between high-tension battery packet and A-battery.Due to
The direct current DC-DC converter is directly connected with all high-tension battery packets, and input voltage is the voltage of entire high-tension battery packet, is needed
High voltage bearing power electronic devices is used, leads to the conversion circuit higher cost, and transfer efficiency is low.
Summary of the invention
The purpose of the utility model is to overcome current traditional electric car voltage transformation is at high cost, the shortcomings that low efficiency, mention
It is a kind of out to be based on modular electric vehicle inverter system, DC-DC transformation is carried out using A-battery module, and A-battery is filled
The low-cost high-efficiency circuit structure of electricity.
The technical solution of the utility model: electromobile modularization inverter high pressure turns low pressure transformation charging circuit,
Its structure includes modularization three-phase low-voltage DC-DC converter, 3 parallel connections and the identical battery inversion unit of structure (including A phase electricity
Pond inversion unit, B phase battery inversion unit, C phase battery inversion unit) and three-phase drive motor；Wherein modularization three-phase low-voltage
A, B, C three-phase input end of DC-DC converter respectively in 3 battery inversion units with group three-phase battery module output end
It is correspondingly connected with, the inverter output end of 3 battery inversion units is separately connected A, B, C three-phase input end of three-phase drive motor.
The advantages of the utility model:
1) high pressure turns not needing to connect all high-tension battery packets when low voltage DC-DC charging, need to only be connected to therein one
Grade cell packet module, it is easy to operate, mitigate circuit load；
2) it does not need using high voltage electric and electronic device, it is only necessary to use low-voltage power electronic device, device cost is low；
3) input use is the same as 3 phase battery module of level-one；
4) input may be coupled on the battery module of (different location) not at the same level；
It 5) can be with the electricity of three battery packs of active equalization in control；
6) conversion efficiency can be improved, reduce cooling requirement, traditional water cooling can be transformed to air-cooled.
Detailed description of the invention
Attached drawing 1 is architecture diagram of the existing electric car mesohigh to low pressure charging circuit.
Attached drawing 2 be the utility model proposes electromobile modularization inverter high pressure turn low pressure transformation charging circuit frame
Composition.
Attached drawing 3 is the structural schematic diagram of modularization three-phase low-voltage DC-DC converter.
Attached drawing 4 is that DC-DC recharging converter is connected to An, the architecture diagram of Bn and Cn battery module.
Specific embodiment
As shown in Fig. 2, electromobile modularization inverter high pressure turns low pressure transformation charging circuit, structure includes modularization
Three-phase low-voltage DC-DC converter, 3 parallel connections and the identical battery inversion unit of structure (including A phase battery inversion unit, B phase electricity
Pond inversion unit, C phase battery inversion unit) and three-phase drive motor；Wherein A, B of modularization three-phase low-voltage DC-DC converter,
C three-phase input end is correspondingly connected with the output end in 3 battery inversion units with the three-phase battery module of group respectively, 3 batteries
The inverter output end of inversion unit is separately connected A, B, C three-phase input end of three-phase drive motor.
3 battery inversion units are made of n three-phase battery block coupled in series, and each three-phase battery module includes 1
A battery pack and 1 modularization inverter, modularization inverter constitute H-bridge inverter circuit by 4 power tubes；It is inverse with A phase battery
Become for unit, each three-phase battery module is followed successively by A1 three-phase battery module, A2 three-phase electricity from left to right in battery inversion unit
Pond module ..., An three-phase battery module, wherein any 1 three-phase battery module is denoted as Ai three-phase battery module, and so on；3
Identical 3 three-phase battery modules are numbered in a battery inversion unit to be considered as with group three-phase battery module.
As shown in figure 3, the modularization three-phase low-voltage DC-DC converter includes that 3 groups of structures are identical and independent mutually
Isolated flyback DC-DC conversion circuit, 12V A-battery and DC-DC PWM controller；Wherein 3 groups of isolated flyback DC-DC become
It changes circuit to be connected respectively with 3 three-phase battery modules (Ai, Bi and Ci) of group in 3 battery inversion units, while its is defeated
Outlet is in parallel with 12V A-battery respectively；DC-DC PWM controller is separately connected in 3 groups of isolated flyback DC-DC conversion circuits
MOSFET element (Metal-Oxide Semiconductor field effect transistor), and pass through three independent pwm signals controls.
When work, modularization three-phase low-voltage DC-DC converter obtains electric energy from the A-battery packet in three-phase battery module,
By internal insulation formula flyback DC-DC conversion circuit by voltage transformation to 12 ~ 14V, then exports to the 12V battery of low pressure and filled
Electricity, it is to keep the electric quantity balancing between 3 three-phase battery modules that 3 three-phase battery modules of setting input simultaneously when charging；
As shown in figure 4, in actual use, if the electricity of a certain group of three-phase battery modules A i, Bi and Ci are unbalanced, can pass through
DC-DC PWM controller separately adjustable its corresponding control signal PWM_a, PWM_b and PWM_c, allow three-phase more than battery capacity
Battery module multi output energy, the low three-phase battery module of battery capacity export energy less, balance the electricity of 3 three-phase battery modules
Amount.
The utility model is in the case where electric vehicle is using the inverter framework of modular battery package and cascade structure, modularization three-phase
Low pressure DC-DC converter does not need to connect entire high-tension battery packet, it is only necessary to high pressure can be completed using wherein one group of battery pack
To the transformation of low pressure；Since the input voltage of DC-DC converter substantially reduces, DC-DC converter is not needed using high pressure
IGBT device, it is only necessary to use the MOSFET element of low pressure.Reducing pressure for device can reduce DC-DC converter cost, together
When reduce device switch and conduction loss ratio, significantly improve the efficiency of DC-DC converter.
Such as: the voltage 392V of the single high-tension battery packet of tradition, DC-DC converter are needed to transform to 12V from 392V, be needed
Using the IGBT device of high pressure, device cost is very high, also needs to carry out water-cool control to converter when transform power is big；
Turn low pressure transformation charging circuit using the electromobile modularization inverter high pressure of the utility model to charge, modular battery
The voltage of packet is 48V, transforms to 12V from 48V and only needs using the MOSFET within pressure-resistant 100V, device cost is very low.Due to
The loss of device operation is smaller, ensures that the safe and reliable work of system instead of water cooling using air-cooled, further drops
Low entrucking cost.
Claims (3)
1. electromobile modularization inverter high pressure turns low pressure transformation charging circuit, it is characterized in that including modularization three-phase low-voltage
DC-DC converter, 3 parallel connections and the identical A phase battery inversion unit of structure, B phase battery inversion unit, C phase battery inversion list
Member and three-phase drive motor；Wherein the A phase input terminal of modularization three-phase low-voltage DC-DC converter connects A phase battery inversion unit
The output end of middle three-phase battery module, B phase input terminal connect the output end of three-phase battery module in B phase battery inversion unit, C phase
Input terminal connects the output end of three-phase battery module in C phase battery inversion unit；The inverter output end of A phase battery inversion unit
The A phase input terminal of connection connection three-phase drive motor, the inverter output end connection connection three-phase drive of B phase battery inversion unit
The B phase input terminal of motor, the C phase input terminal of the inverter output end connection connection three-phase drive motor of C phase battery inversion unit.
2. electromobile modularization inverter high pressure according to claim 1 turns low pressure transformation charging circuit, it is characterized in that
The A phase battery inversion unit, B phase battery inversion unit, C phase battery inversion unit are each by n three-phase battery module
In series, each three-phase battery module includes 1 battery pack and 1 modularization inverter, and modularization inverter is by 4 power
Pipe constitutes H-bridge inverter circuit；Each three-phase battery module is followed successively by A1 three-phase battery mould from left to right in A phase battery inversion unit
Block, A2 three-phase battery module ..., An three-phase battery module, wherein any 1 three-phase battery module is denoted as Ai three-phase battery mould
Block, and so on；Identical 3 three-phase battery modules are numbered in 3 battery inversion units to be considered as with group three-phase battery module.
3. electromobile modularization inverter high pressure according to claim 1 turns low pressure transformation charging circuit, it is characterized in that
The modularization three-phase low-voltage DC-DC converter includes that 3 groups of structures are identical and independent isolated flyback DC-DC is converted mutually
Circuit, 1 piece of 12V A-battery and 1 DC-DC PWM controller；Wherein 3 groups of isolated flyback DC-DC conversion circuits are right respectively
It should connect in 3 battery inversion units with 3 Ai three-phase battery modules, Bi three-phase battery module and the Ci three-phase battery mould of group
The output end of block, 3 groups of isolated flyback DC-DC conversion circuits is in parallel with 12V A-battery respectively；DC-DC PWM controller point
The MOSFET element in 3 groups of isolated flyback DC-DC conversion circuits is not connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821658445.9U CN208874323U (en) | 2018-10-12 | 2018-10-12 | Electromobile modularization inverter high pressure turns low pressure transformation charging circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821658445.9U CN208874323U (en) | 2018-10-12 | 2018-10-12 | Electromobile modularization inverter high pressure turns low pressure transformation charging circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208874323U true CN208874323U (en) | 2019-05-17 |
Family
ID=66470049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821658445.9U Active CN208874323U (en) | 2018-10-12 | 2018-10-12 | Electromobile modularization inverter high pressure turns low pressure transformation charging circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208874323U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109193852A (en) * | 2018-10-12 | 2019-01-11 | 苏州唯控汽车科技有限公司 | Electromobile modularization inverter high pressure turns low pressure transformation charging circuit |
-
2018
- 2018-10-12 CN CN201821658445.9U patent/CN208874323U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109193852A (en) * | 2018-10-12 | 2019-01-11 | 苏州唯控汽车科技有限公司 | Electromobile modularization inverter high pressure turns low pressure transformation charging circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109193852A (en) | Electromobile modularization inverter high pressure turns low pressure transformation charging circuit | |
| US10206314B2 (en) | Power module assembly and manifold | |
| CN106450981B (en) | Bus bar for power module assembly | |
| WO2018188224A1 (en) | Power supply system, electric driving device, pure electric vehicle and working method therefor | |
| WO2018196732A1 (en) | Electric drive system for use with new energy vehicle, and battery power capacity active equalization method therefor | |
| CN103072492B (en) | Active control type hybrid power system for pure electric bus and control method of active control type hybrid power system | |
| CN107947679B (en) | A kind of multiport two-way switch reluctance motor driving system for solar hybrid power automobile | |
| US9592746B2 (en) | Power net system of fuel cell hybrid vehicle and charge/discharge control method | |
| CN107968446B (en) | Distributed battery pack power supply system and charge-discharge control method | |
| WO2012013078A1 (en) | Battery heating circuit | |
| RU2008101533A (en) | HYBRID LOCOMOTIVE WITH MULTIPLE ENGINES | |
| CN101746247A (en) | Auxiliary drive apparatus and method of manufacturing same | |
| WO2014026460A1 (en) | Conversion device integrated with switched reluctance motor drive and low-voltage battery charging | |
| CN102935812A (en) | Motor driving-charging integrated device with 220 volt alternating current (VAC)/380VAC charging function | |
| CN103348553A (en) | Charging an energy store | |
| CN106696704A (en) | Power supply conversion device and power supply conversion method for vehicle | |
| US9643513B2 (en) | Propelling system and energy management system and methods | |
| WO2022206192A1 (en) | Power supply circuit, power supply system and vehicle | |
| CN208874323U (en) | Electromobile modularization inverter high pressure turns low pressure transformation charging circuit | |
| CN103346671A (en) | Direct-current converter and electric automobile direct-current power supply system | |
| CN106787086A (en) | A kind of pair of PWM permanent magnetism power-driven system and its control method | |
| CN112542950B (en) | Bidirectional DC/DC converter, urban rail vehicle and traction system thereof | |
| CN216942773U (en) | Battery heating device and vehicle-mounted control system | |
| CN207819499U (en) | It is main passively to combine buck battery equalizing circuit | |
| CN203827229U (en) | Mechanical in-parallel modularized combined type electric driving system with batteries serving as energy sources |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |