CN208498258U - A kind of preliminary filling control circuit for electric vehicle - Google Patents
A kind of preliminary filling control circuit for electric vehicle Download PDFInfo
- Publication number
- CN208498258U CN208498258U CN201820627585.3U CN201820627585U CN208498258U CN 208498258 U CN208498258 U CN 208498258U CN 201820627585 U CN201820627585 U CN 201820627585U CN 208498258 U CN208498258 U CN 208498258U
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- CN
- China
- Prior art keywords
- master
- relay
- preliminary filling
- converter
- voltage
- 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.)
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Classifications
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- 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
-
- 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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- 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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model provides a kind of preliminary filling control circuit for electric vehicle, including a DC power supply, a plurality of low voltage equipments, one DC-DC converter, a plurality of pre-charging capacitor devices, plurality of high voltage electrical equipment, a plurality of battery modules, one main positive relay, one voltage check device, one control device, a plurality of battery modules are used in series, the DC power supply low voltage equipment in parallel and the DC-DC converter, the DC-DC converter in parallel after master's positive relay series connection battery modules, the high voltage electric equipment, the pre-charging capacitor device, the voltage check device positive relay of master in parallel, the control device connects the voltage check device and the positive relay of the master.
Description
Technical field
The utility model relates to electric car field of power systems, refer in particular to a kind of preliminary filling control electricity for electric vehicle
Road.
Background technique
During vehicle launch, if being pre-charged without capacitor, the direct closing relay of battery completes circuit, then battery
The electricity of 350V is applied directly to capacitor both ends, it is assumed that circuit internal resistance be 0.1 Ω, according to I=△ U/R=(350V-0V)/0.1 Ω=
3500A, circuit can generate the dash current of kilo-ampere, impact, cause to relay, fuse, the capacitor on circuit
The damage of component.
Existing preliminary filling control circuit, such as: a kind of application number: 201710516716.0 preliminary fillings of hybrid power vehicle high voltage system
Electric control circuit and control method, " it is characterized by: one end of the positive relay of the master, main negative relay be separately connected it is described
Positive terminal, the negative pole end of power battery module lead positive relay, the other end of main negative relay is connected to motor, the capacitor
The both ends of motor are attempted by, the both ends that main positive relay is connected to after the preliminary filling relay concatenation preliminary filling resistance form electricity in parallel
Current divider is arranged between parallel circuit and the positive terminal of power battery module in road "；The advantage is that: " the utility model side
Method, current value is smaller in circuit when being closed main positive relay, main negative relay and preliminary filling relay, can prevent due to master just
Accident caused by relay, main negative relay and preliminary filling relay contact are sintered, further support vehicles and driver's person peace
Entirely ".Because 201710516716.0 pass through capacitor to motor progress preliminary filling using preliminary filling relay and preliminary filling resistance, but due to
In parallel again after preliminary filling relay concatenation preliminary filling resistance to lead positive relay, the shunt circuit of formation is also easy to produce interference, such as electromagnetic interference
Deng, the problem of non-preliminary filling directly powers on often is triggered, the damage of preliminary filling relay, preliminary filling resistance, electrical appliance equipment is ultimately caused, and
And device maintenance is frequently replaced, lead to the increase of electric vehicle maintenance and repair cost, reduces the practicability of electric vehicle.
The prior art the disadvantage is that:
1, the complexity in preliminary filling control circuit increasing high-voltage electrical apparatus circuit is so as to cause the unstable of preliminary filling control circuit, in advance
Charging circuit device interferes with each other operation, is easy to appear the case where directly powering on without preliminary filling during startup, in this case
It is easy the main positive relay of directly damage.
2, preliminary filling relay and preliminary filling resistance have certain service life, in the case where long-time service, preliminary filling relay
It is vulnerable part with preliminary filling resistance, especially in the case where there is rush of current, the service life is substantially reduced, and needs to frequently replace increase
The cost of maintenance and repair.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of preliminary filling control circuit for electric vehicle.
The utility model is realized in this way: a kind of preliminary filling control circuit for electric vehicle, including it is a DC power supply, multiple
Several low voltage equipments, a DC-DC converter, a plurality of pre-charging capacitor devices, plurality of high voltage electrical equipment, a plurality of electricity
Chi Mo group, a main positive relay, a voltage check device, a control device, a plurality of battery modules are used in series, described
The DC power supply parallel connection low voltage equipment and the DC-DC converter, master's positive relay series connection battery mould
The parallel connection DC-DC converter, the high voltage electric equipment, the pre-charging capacitor device after group, the voltage check device is simultaneously
Join the positive relay of the master, the control device connects the voltage check device and the positive relay of the master.
It preferably, further include a main negative relay, the negative relay of master is connected the other ends of the battery modules, described
The parallel connection DC-DC converter, the high pressure after main positive relay, the battery modules, the negative relay of the master are sequentially connected in series
Electrical equipment, the pre-charging capacitor device.
Preferably, the voltage check device positive relay of master in parallel or the negative relay of the master, the control dress
Set the connection voltage check device, the positive relay of the master and the negative relay of the master.
Preferably, the corresponding pre-charging capacitor device in parallel of the high voltage electric equipment.
Preferably, the DC-DC converter is bi-directional DC-DC converter, and the DC power supply is lead-acid battery or lithium electricity
Pond.
Utility model has the advantages that
1, the utility model does not use preliminary filling relay and preliminary filling resistance, reduces the high-pressure truss complexity journey of electric car
Degree avoids precharging circuit device from interfering with each other the case where directly powering on caused by operation without preliminary filling, has save the cost, protection
The characteristics of electrical appliance equipment, greatly reduces maintenance and the cost of upkeep of electric vehicle.
2, by the main negative relay of addition, main negative relay is separately positioned on the positive terminal of battery modules with main positive relay
And negative pole end, the positive terminal of battery modules and negative pole end and other loads are separated, avoids battery modules abnormal and influences
Other loads.
3, by bi-directional DC-DC converter, the utility model is completed in preliminary filling, after normal vehicle operation, moreover it is possible to by battery
The high voltage direct current of mould group changes into low-voltage direct and supplies electricity to DC power supply charging, and powers to the low voltage equipment, so not
It only ensure that the duration that each DC power supply uses, and provide a kind of power supply guarantee more for low voltage equipment, make low pressure
Electrical equipment electricity consumption is more stable.
Detailed description of the invention
The utility model is further described in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the utility model square law device connection schematic diagram.
Figure of description is as follows:
DC power supply 1；Low voltage equipment 2；DC-DC converter 3；Pre-charging capacitor device 4；High voltage electric equipment 5；Battery
Mould group 6；Voltage check device 7；Main positive relay 8；Main negative relay 9.
Specific embodiment
Refering to Figure 1, a kind of preliminary filling control circuit for electric vehicle, including a DC power supply 1, a plurality of low pressure
Electrical equipment 2, a DC-DC converter 3, a plurality of pre-charging capacitor devices 4, plurality of high voltage electrical equipment 5, a plurality of battery moulds
The main negative relay 9 of the main positive relay 8, one of group 6, one, a voltage check device 7, a control device (not shown), it is a plurality of described
Battery modules 6 are used in series, the DC power supply 1 low voltage equipment 2 in parallel and 3 (this reality of the DC-DC converter
Quantity shown in figure is not limited only to novel low voltage equipment 2), the positive relay 8 of the master, the battery modules 6, institute
State the DC-DC converter 3 in parallel after main negative relay 9 is sequentially connected in series, the high voltage electric equipment 5, the precharge contain
4 are set, the voltage check device 7 positive relay 8 of master in parallel or the negative relay 9 of the master, the control device (are schemed not
Show) the connection voltage check device 7, the positive relay 8 of the master and the negative relay 9 of the master；The one high voltage electric equipment 5
The one pre-charging capacitor device 4 of corresponding parallel connection, the high voltage electric equipment 5 and pre-charging capacitor device 4 of the utility model not only limit
In quantity shown in figure；The DC-DC converter 3 be bi-directional DC-DC converter, the DC power supply 1 be lead-acid battery or
Lithium battery.
The low-voltage DC of the DC power supply 1 is converted to high voltage direct current by the DC-DC converter 3, to electric vehicle
On the corresponding all pre-charging capacitor devices 4 of all high voltage electric equipment 5 charge, while the voltage
Detection device 7 detects the voltage of the pre-charging capacitor device 4 and the voltage of the battery modules 6, when the pre-charging capacitor device 4
Voltage and the battery modules 6 voltage it is close when, the main positive relay 8 of control device (not shown) closure and main negative
Relay 9 constitutes closed circuit, completes the preliminary filling process of electric vehicle automobile.Preliminary filling is completed, after normal vehicle operation, the battery
The high voltage direct current of mould group 6 changes into low-voltage direct by the DC-DC converter 3 and supplies electricity to the charging of DC power supply 1, and gives institute
State the power supply of low voltage equipment 2.The DC-DC converter 3 is bi-directional DC-DC converter, and the DC power supply 1 is lead-acid battery
Or lithium battery, lead-acid battery and lithium battery are selected according to the outfit of practical electric vehicle automobile, here with 12V lead-acid battery, electricity
The electricity consumption of Chi Mo group 6 and high voltage electric equipment 5 further illustrates the effect of bi-directional DC-DC converter 3 for being 350V.
Bi-directional DC-DC converter 3 is converted to 350V high during powering on preliminary filling, by the 12V low tension of 12V lead-acid battery
Piezoelectricity to the corresponding pre-charging capacitor device of high voltage electric equipment 54 (pre-charging capacitor device 4 to high voltage electric equipment 5 rise pressure stabilizing and
The effect of filtering) it charges；After powering on successfully, the 350V high-voltage electricity that bi-directional DC-DC converter 3 receives battery modules 6 will
It is that 12V lead-acid battery charges, and powers to the low voltage equipment 2 that it, which is converted to 12V low tension,.
Although those familiar with the art answers the foregoing describe specific embodiment of the present utility model
Working as understanding, we are merely exemplary described specific embodiment, rather than for the limit to the scope of the utility model
Fixed, those skilled in the art modification and variation equivalent made by the spirit according to the utility model all should
Cover in the scope of the claimed protection of the utility model.
Claims (5)
1. a kind of preliminary filling control circuit for electric vehicle, including a DC power supply, a plurality of low voltage equipments, a DC-DC
Converter, a plurality of pre-charging capacitor devices, plurality of high voltage electrical equipment, a plurality of battery modules, a main positive relay, an electricity
Detection device, a control device are pressed, a plurality of battery modules are used in series, it is characterised in that:
The DC power supply low voltage equipment in parallel and the DC-DC converter, master's positive relay series connection institute
State the DC-DC converter in parallel after battery modules, the high voltage electric equipment, the pre-charging capacitor device, the voltage inspection
The device positive relay of master in parallel is surveyed, the control device connects the voltage check device and the positive relay of the master.
2. one kind according to claim 1 preliminary filling control circuit for electric vehicle, it is characterised in that: further include one main negative
Relay, the negative relay of master are connected the other ends of the battery modules, the positive relay of the master, the battery modules, institute
State the parallel connection DC-DC converter, the high voltage electric equipment, the pre-charging capacitor device after main negative relay is sequentially connected in series.
3. one kind according to claim 2 preliminary filling control circuit for electric vehicle, it is characterised in that: the voltage detecting
The in parallel positive relay of master of device or the negative relay of the master, the control device connect the voltage check device, described
Main positive relay and the negative relay of the master.
4. one kind according to claim 1 preliminary filling control circuit for electric vehicle, it is characterised in that: a high pressure is used
The corresponding pre-charging capacitor device in parallel of electric equipment.
5. one kind according to claim 1 preliminary filling control circuit for electric vehicle, it is characterised in that: the DC-DC turns
Parallel operation is bi-directional DC-DC converter, and the DC power supply is lead-acid battery or lithium battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820627585.3U CN208498258U (en) | 2018-04-28 | 2018-04-28 | A kind of preliminary filling control circuit for electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820627585.3U CN208498258U (en) | 2018-04-28 | 2018-04-28 | A kind of preliminary filling control circuit for electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208498258U true CN208498258U (en) | 2019-02-15 |
Family
ID=65297802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820627585.3U Expired - Fee Related CN208498258U (en) | 2018-04-28 | 2018-04-28 | A kind of preliminary filling control circuit for electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208498258U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108422889A (en) * | 2018-04-28 | 2018-08-21 | 东南（福建）汽车工业有限公司 | A kind of preliminary filling control circuit and control method for electric vehicle |
-
2018
- 2018-04-28 CN CN201820627585.3U patent/CN208498258U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108422889A (en) * | 2018-04-28 | 2018-08-21 | 东南（福建）汽车工业有限公司 | A kind of preliminary filling control circuit and control method for electric vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190215 Termination date: 20200428 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |