CN207449633U - A kind of electric vehicle charges and driving interlock circuit - Google Patents
A kind of electric vehicle charges and driving interlock circuit Download PDFInfo
- Publication number
- CN207449633U CN207449633U CN201720698269.0U CN201720698269U CN207449633U CN 207449633 U CN207449633 U CN 207449633U CN 201720698269 U CN201720698269 U CN 201720698269U CN 207449633 U CN207449633 U CN 207449633U
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- Prior art keywords
- relay
- contactor
- vehicle
- circuit
- control chip
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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
- 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
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a kind of electric vehicles to charge and driving interlock circuit, when key gets to ON grades, ignition switch exports useful signal, it is master control chip power supply that relay, which connects vehicle accessory power supply, preliminary filling contactor, main negative contactor are closed precharge, precharging circuit is cut off when voltage in load capacitance is close to cell voltage, connects main positive contactor, vehicle starts；When Vehicular charging, charger is communicated with battery, actuating of relay when charging 24V+ is effective, is disconnected connection of the main positive contactor to main control chip, is cut off power battery major loop and preliminary filling circuit；Vehicle accessory power supply stops being master control chip power supply, and main control chip is powered by the low pressure accessory power supply of charger.The utility model realizes vulnerabilities scan forceful electric power break-make using relay, and so as to fulfill the interlocking charged and driven a vehicle, the interlocking of charging and driving is realized with simple control circuit, ensure that high-voltage charging and the safety of driving.
Description
Technical field
The utility model is related to a kind of electric vehicles to charge and driving interlock circuit, belongs to electric vehicle manufacturing technology neck
Domain.
Background technology
Atmosphere pollution and energy crisis with getting worse, new-energy automobile become the hot spot studied both at home and abroad, electricity
The research and development of electrical automobile attract wide attention.The Electrical Safety performance of pure electric automobile has also obtained enough attention simultaneously.Example
High-voltage safety during such as driving and charging, in driving, it is necessary to cut off the connection of charge port and power battery；And under charging,
Also it is necessary to switch off and relevant high pressure of driving a vehicle.
Electric vehicle designs more consideration high-voltage interlocking at this stage, realizes that high-voltage interlocking needs to use band high pressure mutual in circuit
The connector of lock, this just considerably increases the cost of design, and charging and driving are directly ignored in the also design of some electric vehicles
Interlocking, this just makes the personal safety of personnel be on the hazard, and how to design a kind of scheme, can reach the interlocking mesh of charging driving
, it realizes high-voltage safety, and can solve the problems, such as that cost is higher, has no relevant report in the prior art.
The content of the invention
The utility model aim is to solve the above problem of the prior art, provides a kind of electric vehicle and charge and drive a vehicle
Interlock circuit.
In order to achieve the above objectives, used technological means is the utility model：A kind of electric vehicle charges mutual with driving
Lock circuit, when key gets to ON grades, IG ignition switches output useful signal, relay K3 is acted, and relay K3 is got to by 87a
87, closed circuit connects vehicle 24V accessory power supplys, powers for main control chip BMS, preliminary filling contactor KM3, main negative contactor KM2
It is closed, into line precharge, when voltage VC on load capacitance C is close to cell voltage U, cuts off precharging circuit, connect main positive contact
Device KM1, vehicle start；When vehicle is charged, charger is communicated with battery, and when charging 24V+ is effective, relay K1, K2 are moved
Make, K1 gets to 87 by 87a, disconnects the connection of main positive contactor KM1 to main control chip BMS, and main positive contactor KM1 is disconnected, cut-out
Power battery major loop；Relay K2 gets to 87 by 87a, disconnects connection of the preliminary filling contactor to main control chip BMS, preliminary filling contact
Device KM3 is disconnected, cut-out power battery preliminary filling circuit；Relay K4 is acted, and relay K4 gets to 87 by 87a, is disconnected and relay
The connection of K3, at this time vehicle 24V accessory power supplys by stop for main control chip BMS power, main control chip BMS by charger low pressure
Accessory power supply is powered.
The utility model advantageous effect is：Using relay realize vulnerabilities scan forceful electric power break-make, so as to fulfill charge with
The interlocking of driving, as long as vehicle is charging, the positive contactor of master of entire control circuit is at off-state, can not start vehicle
, the interlocking of charging and driving is realized with simple control circuit, ensure that high-voltage charging and the safety of driving.
Description of the drawings
The utility model is further elaborated with reference to the accompanying drawings and examples.
The pre-charge circuit figure of Fig. 1 the utility model；
The start-up circuit control principle drawing of Fig. 2 the utility model；
Fig. 3 the utility model charges and driving circuit interlock control figure.
Specific embodiment
A kind of electric vehicle charges and driving interlock circuit, when key gets to ON grades, IG ignition switches output effectively letter
Number, the K3 actuatings of relay, K3 gets to 87 by 87a, and closed circuit connects vehicle 24V accessory power supplys, powers for main control chip BMS,
Preliminary filling contactor, main negative contactor are closed, progress pre-charge process, and the voltage VC on load capacitance C is higher and higher（Precharge electricity
It flows less and less）, when close to cell voltage U, precharging circuit is cut off, connects main positive contactor, vehicle starts, pre-charge circuit
Such as Fig. 1, start-up circuit control principle drawing such as Fig. 2.
As shown in figure 3, when vehicle is in charged state, charger is communicated with battery, when charging 24V+ is effective（Charger is auxiliary
The voltage that power supply provides is helped to be converted to 24V by DC/DC for 12V）, K1, K2 actuating of relay, K1 gets to 87 by 87a, disconnects
Connection of the positive contactor to main control chip BMS is led, main positive contactor disconnects, and cuts off power battery major loop；K2 is got to by 87a
87, connection of the preliminary filling contactor to main control chip BMS is disconnected, preliminary filling contactor disconnects, cut-out power battery preliminary filling circuit；K4 after
Electric appliance acts, and K4 gets to 87 by 87a, disconnects the connection with K3 relays, and vehicle 24V accessory power supplys will stop as master control core at this time
Piece BMS powers, and main control chip BMS is powered by the low pressure accessory power supply of charger.
The utility model realizes vulnerabilities scan forceful electric power break-make using relay, so as to fulfill the interlocking charged and driven a vehicle, only
Vehicle is wanted to charge, the positive contactor of master of entire control circuit is at off-state, can not start vehicle, simply to control
Circuit realizes the interlocking of charging and driving, ensure that high-voltage charging and the safety of driving.
The above is only specific embodiment of the present utility model, it is not limited to this, it is any to be familiar with the art
The technical scope that is disclosed in the utility model of technical staff in, change or replacement can be readily occurred in, should all be covered in this practicality
Within new protection domain.
Claims (1)
1. a kind of electric vehicle charges and driving interlock circuit, it is characterised in that：When key gets to ON grades, IG ignition switches are defeated
Going out useful signal, relay K3 actions, relay K3 gets to 87 by 87a, and closed circuit connects vehicle 24V accessory power supplys, based on
Chip BMS power supply is controlled, preliminary filling contactor KM3, main negative contactor KM2 are closed, into line precharge, the voltage VC on load capacitance C
During close to cell voltage U, precharging circuit is cut off, connects main positive contactor KM1, vehicle starts；When vehicle is charged, charge
Machine is communicated with battery, and when charging 24V+ is effective, relay K1, K2 action, K1 get to 87 by 87a, is disconnected main positive contactor KM1 and is arrived
The connection of main control chip BMS, main positive contactor KM1 are disconnected, and cut off power battery major loop；Relay K2 gets to 87 by 87a, breaks
Connection of the preliminary filling contactor to main control chip BMS is opened, preliminary filling contactor KM3 is disconnected, cut-out power battery preliminary filling circuit；Relay
K4 is acted, and relay K4 gets to 87 by 87a, disconnects the connection with relay K3, based on vehicle 24V accessory power supplys will stop at this time
Chip BMS power supplies are controlled, main control chip BMS is powered by the low pressure accessory power supply of charger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720698269.0U CN207449633U (en) | 2017-06-15 | 2017-06-15 | A kind of electric vehicle charges and driving interlock circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720698269.0U CN207449633U (en) | 2017-06-15 | 2017-06-15 | A kind of electric vehicle charges and driving interlock circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207449633U true CN207449633U (en) | 2018-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720698269.0U Active CN207449633U (en) | 2017-06-15 | 2017-06-15 | A kind of electric vehicle charges and driving interlock circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207449633U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111114325A (en) * | 2018-10-31 | 2020-05-08 | 上海申龙客车有限公司 | Power-on control protection system of fuel cell passenger car |
| CN111137150A (en) * | 2018-11-02 | 2020-05-12 | 北汽福田汽车股份有限公司 | Charging control method and vehicle-mounted charger |
-
2017
- 2017-06-15 CN CN201720698269.0U patent/CN207449633U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111114325A (en) * | 2018-10-31 | 2020-05-08 | 上海申龙客车有限公司 | Power-on control protection system of fuel cell passenger car |
| CN111114325B (en) * | 2018-10-31 | 2024-05-14 | 上海申龙客车有限公司 | Power-on control protection system of fuel cell passenger car |
| CN111137150A (en) * | 2018-11-02 | 2020-05-12 | 北汽福田汽车股份有限公司 | Charging control method and vehicle-mounted charger |
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| GR01 | Patent grant |