CN208714993U - A kind of charging circuit for electric vehicles - Google Patents
A kind of charging circuit for electric vehicles Download PDFInfo
- Publication number
- CN208714993U CN208714993U CN201721651391.9U CN201721651391U CN208714993U CN 208714993 U CN208714993 U CN 208714993U CN 201721651391 U CN201721651391 U CN 201721651391U CN 208714993 U CN208714993 U CN 208714993U
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- China
- Prior art keywords
- dcdc
- charging
- bms
- relay
- supply convertor
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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
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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
- Y02T10/7072—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
Abstract
The utility model relates to a kind of charging circuit for electric vehicles, can start DCDC in power battery charging as low tension battery charging, improve charging process safety, be suitable for electric car, belong to technical field of new energy.The charging circuit for electric vehicles includes BMS battery management system and K1 the and K2 relay controlled by BMS, entire car controller VMS and controller local area network CAN, further includes DCDC supply convertor and the concatenated K0 relay of DCDC supply convertor and low tension battery；Supply convertor DCDC, it is when power battery enters normal charge mode, entire car controller VMS controls closing relay K0 by controller local area network's CAN message interaction notice BMS battery management system, and supply convertor DCDC charges after converting low pressure for low tension battery.Such as pass through starting DCDC when charging and mend electricity to lead-acid accumulator, then can ensure that in entire charging flow battery not power shortage, avoids damage equipment.
Description
Technical field
The utility model relates to a kind of charging circuit for electric vehicles, can start DCDC in charging and fill for low tension battery
Electricity improves charge efficiency, is suitable for electric car, belongs to technical field of new energy.
Background technique
As the measure of countries in the world environmental protection is increasingly stringenter, the delisting wave of fuel vehicle has been started in world wide
The scheme of tide, replacing fuel oil engine automobile is also more and more, such as hydrogen energy source automobile, fuel cell car, electric car etc..
But most there are the mode of practical value and existing commercial operations, only electric car at present.Electric car is increasingly subject to people
Concern, and have begun and gradually enter into people's lives.Kernel component and power source of the power battery as electric car,
It is recycled and the emphasis just used at new energy vehicle is safeguarded in daily maintenance, and the most important thing is cycle charge-discharge, fills
Electric rate, efficiency, safety, reliability are extremely critical.The electric car charging time is long currently on the market, and charge static function
Consumption may cause vehicle lead-acid battery low voltage feeder, cause charging process uncontrollable, to damage equipment or security risk occurs.
Summary of the invention
In order to overcome above-mentioned deficiency, the utility model provides a kind of charging circuit for electric vehicles, can start in charging
DCDC is low tension battery (lead-acid accumulator) charging, improves charging process safety, prevents from sending out because low tension battery is fed
Outside business.
The charging circuit for electric vehicles of the utility model includes BMS battery management system and K1 the and K2 relay controlled by BMS
Device, entire car controller VMS and controller local area network CAN further include DCDC supply convertor, connect with DCDC supply convertor
K0 relay and low tension battery；
Supply convertor DCDC is when power battery enters normal charge mode, and entire car controller VMS passes through controller
Local area network CAN message interaction notice BMS battery management system controls closing relay K0, and supply convertor DCDC converts low pressure
It charges afterwards for low tension battery.
It is described to pass through the enabled supply convertor of controller local area network's CAN message instruction simultaneously in entire car controller VMS
DCDC enters working condition, and real-time monitoring DCDC running state parameter, if shape abnormal stature does respective handling.
Abnormal state citing: 1. 2. DCDC ontology hardware fault inputs high pressure over-voltage or under-voltage 3. output low pressure over-voltage or owes
4. 5. output overcurrent limits power 6. DCDC ontology excess temperature to pressure.
Treatment measures: when VMS monitors DCDC abnormal state (above situation is one or more), halt instruction is sent at once
Make its shutdown to DCDC, be then cut off its high-voltage electricity (CAN message instruction notification BMS disconnects relay K0).And inform BMS low pressure
Power supply DCDC starting failure, there are security risks for charging process.As VMS monitors that low voltage is too low under extreme case, can lead to
Know that BMS and charging pile interactive information terminate to charge, avoids unexpected generation.
The described circuit further includes the relay K3 and K4 being arranged on charging pile anode and cathode, is entering charge mode
Before, charging pile controls closing relay K3 and K4.
The supply convertor DCDC, after charging, battery management system BMS and charging pile are each turned off by regulation
Relay K1, K2, K3, K4, entire car controller VMS stop enabled supply convertor DCDC, and instruction control BMS disconnects relay
K0, subsequent VMS, BMS, DCDC enter dormant state, complete a charge cycle.
According to " low pressure is auxiliary in Kunming Market " GB/T 18487.1-2015 electric car conduction charging system General Requirement "
Help current supply circuit, voltage is 12V ± 5%, the requirement of electric current 10A ", and the operating mode of BMS is defined as " normal electricity+wake-up "；BMS
By vehicle 24V, often electricity is used as working power, and BMS is waken up by key KeyOn (24V) when driving, into operating mode；It is filled when charging
Wake-up signal of the electric stake 12V as BMS, while waking up DCDC and VMS；
The utility model has the beneficial effects that cell management system of electric automobile after high pressure under parking in a dormant state,
It is then waken up when charging, and uses vehicle low tension battery as working power.Such as battery is in feed condition at this time, then may
Charging flow is terminated because voltage is low, such case gently then damages relay, heavy then damage equipment, in some instances it may even be possible to safety occurs
Problem.Such as pass through starting DCDC when charging and mend electricity to lead-acid accumulator, then can ensure that battery is not fed in entire charging flow,
Effectively prevent above-mentioned risk.
Detailed description of the invention
Fig. 1 is the utility model circuit diagram；
Specific embodiment
With reference to the accompanying drawings and detailed description, the utility model is described in further detail.
Embodiment one: as shown in Figure 1, the charging circuit for electric vehicles of the utility model include BMS battery management system and
K1 and K2 relay, entire car controller VMS and the controller local area network CAN controlled by BMS, further includes DCDC power conversion
Device and the concatenated K0 relay of DCDC supply convertor and low tension battery；Supply convertor DCDC is entered in power battery
When normal charge mode, entire car controller VMS passes through controller local area network's CAN message interaction notice BMS battery management system
Closing relay K0 is controlled, supply convertor DCDC charges after converting low pressure for low tension battery.
Entire car controller VMS pass through simultaneously controller local area network's CAN message instruct enabled supply convertor DCDC into
Enter working condition, and real-time monitoring DCDC running state parameter.The circuit further includes being arranged on charging pile anode and cathode
Relay K3 and K4, before entering charge mode, charging pile controls closing relay K3 and K4.Supply convertor DCDC,
After charging, battery management system BMS and charging pile are each turned off relay K1, K2, K3, K4, entire car controller by regulation
VMS stops enabled supply convertor DCDC, and instruction control BMS disconnects relay K0, and subsequent VMS, BMS, DCDC enter suspend mode
State completes a charge cycle.
Embodiment two: as shown in Figure 1, the charging circuit for electric vehicles of the utility model include BMS battery management system and
K1 and K2 relay, entire car controller VMS and the controller local area network CAN controlled by BMS, further includes DCDC power conversion
Device and the concatenated K0 relay of DCDC supply convertor and low tension battery；Supply convertor DCDC is entered in power battery
When normal charge mode, entire car controller VMS passes through controller local area network's CAN message interaction notice BMS battery management system
Closing relay K0 is controlled, supply convertor DCDC charges after converting low pressure for low tension battery.
Entire car controller VMS pass through simultaneously controller local area network's CAN message instruct enabled supply convertor DCDC into
Enter working condition, and real-time monitoring DCDC running state parameter, discovery input high pressure over-voltage sends halt instruction to DCDC at once
Make its shutdown, be then cut off its high-voltage electricity (CAN message instruction notification BMS disconnects relay K0).And inform BMS low-tension supply
DCDC starting failure, there are security risks for charging process.
The circuit further includes the relay K3 and K4 being arranged on charging pile anode and cathode, enter charge mode it
Before, charging pile controls closing relay K3 and K4.
Embodiment three: the charging circuit for electric vehicles of the utility model includes BMS battery management system and is controlled by BMS
K1 and K2 relay, entire car controller VMS and controller local area network CAN further include DCDC supply convertor and DCDC power supply
The concatenated K0 relay of converter and low tension battery；Supply convertor DCDC is to enter normal charge mode in power battery
When, entire car controller VMS controls closing relay by controller local area network's CAN message interaction notice BMS battery management system
Device K0, supply convertor DCDC charge after converting low pressure for low tension battery.
The circuit further includes the relay K3 and K4 being arranged on charging pile anode and cathode, enter charge mode it
Before, charging pile controls closing relay K3 and K4.Supply convertor DCDC battery management system BMS and fills after charging
Electric stake is each turned off relay K1, K2, K3, K4 by regulation, and entire car controller VMS stops enabled supply convertor DCDC, instruction
It controls BMS and disconnects relay K0, subsequent VMS, BMS, DCDC enter dormant state, complete a charge cycle.
In conjunction with attached drawing, the specific embodiments of the present invention are described in detail above, but the utility model is not
Be limited to above embodiment, within the knowledge of a person skilled in the art, can also do not depart from it is practical
Various changes can be made under the premise of novel objective.
Claims (1)
1. a kind of charging circuit for electric vehicles, including BMS battery management system and K1 the and K2 relay controlled by BMS, vehicle control
Device VMS and controller local area network CAN processed, it is characterised in that: further include DCDC supply convertor and DCDC supply convertor string
The K0 relay and low tension battery of connection；
Supply convertor DCDC is when power battery enters normal charge mode, and entire car controller VMS passes through controller local
Network C AN message interaction notifies BMS battery management system to control closing relay K0, is after supply convertor DCDC transformation low pressure
Low tension battery charging；
It is described entire car controller VMS pass through simultaneously controller local area network's CAN message instruct enabled supply convertor DCDC into
Enter working condition, and real-time monitoring DCDC running state parameter；
The described circuit further includes the relay K3 and K4 being arranged on charging pile anode and cathode, enter charge mode it
Before, charging pile controls closing relay K3 and K4；
The supply convertor DCDC, after charging, battery management system BMS and charging pile are each turned off relay by regulation
Device K1, K2, K3, K4, entire car controller VMS stop enabled supply convertor DCDC, and instruction control BMS disconnects relay K0, with
VMS, BMS, DCDC enter dormant state afterwards, complete a charge cycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721651391.9U CN208714993U (en) | 2017-12-01 | 2017-12-01 | A kind of charging circuit for electric vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721651391.9U CN208714993U (en) | 2017-12-01 | 2017-12-01 | A kind of charging circuit for electric vehicles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208714993U true CN208714993U (en) | 2019-04-09 |
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ID=65968181
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721651391.9U Active CN208714993U (en) | 2017-12-01 | 2017-12-01 | A kind of charging circuit for electric vehicles |
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| Country | Link |
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| CN (1) | CN208714993U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112009246A (en) * | 2020-08-13 | 2020-12-01 | 宜宾凯翼汽车有限公司 | Automobile auxiliary power supply management system and control method |
| CN112208381A (en) * | 2019-07-12 | 2021-01-12 | 陕西汽车集团有限责任公司 | New energy automobile charging system control circuit and control method |
| CN113581102A (en) * | 2020-04-30 | 2021-11-02 | 比亚迪股份有限公司 | Method for controlling charging of vehicle battery, domain controller and vehicle |
| CN113829927A (en) * | 2020-06-24 | 2021-12-24 | 比亚迪股份有限公司 | Train control method, train and train charging system control method |
| CN113829929A (en) * | 2020-06-24 | 2021-12-24 | 比亚迪股份有限公司 | Train, train control method and train charging system control method |
-
2017
- 2017-12-01 CN CN201721651391.9U patent/CN208714993U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112208381A (en) * | 2019-07-12 | 2021-01-12 | 陕西汽车集团有限责任公司 | New energy automobile charging system control circuit and control method |
| CN113581102A (en) * | 2020-04-30 | 2021-11-02 | 比亚迪股份有限公司 | Method for controlling charging of vehicle battery, domain controller and vehicle |
| CN113829927A (en) * | 2020-06-24 | 2021-12-24 | 比亚迪股份有限公司 | Train control method, train and train charging system control method |
| CN113829929A (en) * | 2020-06-24 | 2021-12-24 | 比亚迪股份有限公司 | Train, train control method and train charging system control method |
| CN113829927B (en) * | 2020-06-24 | 2023-04-07 | 比亚迪股份有限公司 | Train control method, train and train charging system control method |
| CN113829929B (en) * | 2020-06-24 | 2023-04-07 | 比亚迪股份有限公司 | Train, train control method and train charging system control method |
| CN112009246A (en) * | 2020-08-13 | 2020-12-01 | 宜宾凯翼汽车有限公司 | Automobile auxiliary power supply management system and control method |
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