CN206947964U - A kind of multiple protector of DC charging equipment safety charging - Google Patents
A kind of multiple protector of DC charging equipment safety charging Download PDFInfo
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- CN206947964U CN206947964U CN201720134260.7U CN201720134260U CN206947964U CN 206947964 U CN206947964 U CN 206947964U CN 201720134260 U CN201720134260 U CN 201720134260U CN 206947964 U CN206947964 U CN 206947964U
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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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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The utility model discloses a kind of multiple protector of DC charging equipment safety charging; including control unit, jerk detection unit, temperature detecting unit, power module group, over-current detection unit and over-pressed detection unit; control unit is connected with jerk detection unit, temperature detecting unit, over-current detection unit, over-pressed detection unit, power module group simultaneously; control unit is also connected by CAN BUS1 with vehicle BMS, and control unit is also connected by CANBUS2 with being spaced apart for power module group of control.By triple protection mechanism, greatly improve the security of charging electric vehicle process, and the utility model is simple in construction, practical.
Description
Technical field
Charging equipment of electric automobile designing technique is the utility model is related to, a kind of DC charging equipment safety is referred in particular to and fills
The multiple protector of electricity.
Background technology
At present, electric automobile is with low stain, still, electronic as the selection of more and more consumers the characteristics of high-environmental
Automobile currently still takes place frequently in the presence of security incident in some potential safety hazards, such as charging process, and shortage is effectively protected means, into
For the most important barrier of restriction electric automobile industry development.So by improving charging safety of the charging equipment to electric automobile
Property, security and enthusiasm that consumer uses electric automobile can be improved.
Utility model content
The purpose of this utility model is to overcome security incident in charging process in the prior art to take place frequently, and shortage is effectively protected
A kind of the defects of means, there is provided multiple protector of DC charging equipment safety charging.
The purpose of this utility model is achieved by following technical proposals：
A kind of multiple protector of DC charging equipment safety charging, including control unit, jerk detection unit, temperature
Detection unit, power module group, over-current detection unit and over-pressed detection unit, control unit simultaneously with jerk detection unit, temperature
Degree detection unit, over-current detection unit, over-pressed detection unit, power module group are connected, and control unit also passes through CAN BUS1
It is connected with vehicle BMS, control unit is also connected by CANBUS2 with being spaced apart for power module group of control.
Multiple protector is protected by triple protection to charging equipment, is specially：
1) first order is protected：System mode according to detecting is protected
A, jerk is protected：System detectio is to the physical connection that charging equipment and electric automobile are disconnected in 50ms after emergent stop signal
And module for power supply of cutting off the electricity supply, terminate this charging flow.
B, overvoltage protection：Set system voltage to protect threshold values Vp, in charging process, persistently whether detect charging voltage value
More than Vp, if then cut-out power supply, terminates this charging flow.
C, overcurrent protection：Set system power to protect threshold values Ip, in charging process, persistently whether detect charging current value
More than Ip, if then cut-out power supply, complete charge flow.
D, over-temperature protection：Setting system over-temperature protection threshold values Tp, recover threshold values Tpr, in charging process, lasting detection
Whether system temperature is more than Tp, if then reducing 1/2 charging current, when detecting that system temperature is less than Tpr, and recovery system demand
Charging current.Wherein Tp is more than Tpr.
E, system insulation abnormal protection and high voltage connector adhesion protection：In system prepares to start charging process, system
Meeting self-test, if it is checked that system insulation exception or high voltage connector adhesion, then terminate this charging flow.
F, Communications failure is protected：In charging process, between each monitoring unit Communications failure or with battery management system communicate
Failure, then terminate this charging flow.
2) second level is protected：Protected by the threshold values interacted with battery management system
A, the maximum allowable charging voltage protection of battery pack：In charging process, persistently detect whether charging voltage value is more than electricity
The maximum allowable charging voltage value of battery pack of pond management system transmission, if then terminating this charging flow.
B, the maximum allowable charging current protection of battery pack：In charging process, persistently detect whether charging current value is more than electricity
The maximum allowable charging current value of battery pack of pond management system transmission, if then terminating this charging flow.
3) third level is protected：Redundancy protecting is carried out by real time charging data
A, protection is overcharged：The battery total electricity Qm and battery charge state transmitted according to handshake phase battery management system
(SOC) D, chargeable amount Qs=(1-D) the * Qm of battery is calculated, obtain ammeter electricity in charging process in real time, judgement has been charged
Whether amount is more than the chargeable amount of battery, if then terminating this charging flow.
B, charging interval long protection：In charging process, charge volume Q=∫ (Vt*It) dt, wherein V t, It is respectively t
Charging voltage, the charging current at moment.When the T moment, charge volume Q was more than the chargeable amount of battery, terminate this charging flow.
As a kind of preferred scheme, the multiple protector of DC charging equipment safety charging also includes accessory power supply, auxiliary
Power supply is helped to be powered to control unit.
As a kind of preferred scheme, the multiple protector of DC charging equipment safety charging also includes vehicle BMS, controls
Unit is connected by CANBUS1 with vehicle BMS.
In the third level is protected, in addition to：
C, BMS transmits battery data abnormal protection：In charging process, battery management system transmits the charged of battery in real time
State (SOC), if charge volume is increasing, but state-of-charge does not increase and either reduced or equal to 100%, then battery management system
System transmission data exception, terminates this charging flow.
The beneficial effects of the utility model are, by triple protection mechanism, to make the security of charging electric vehicle process big
It is big to improve, and the utility model is simple in construction, practical.
Brief description of the drawings
Fig. 1 is a kind of schematic block circuit diagram of the present utility model.
Wherein：1st, control unit, 2, jerk detection unit, 3, temperature detecting unit, 4, power module group, 5, over-current detection
Unit, 6, over-pressed detection unit, 7, be spaced apart, 8, accessory power supply, 9, vehicle BMS.
Embodiment
The utility model is further described with reference to the accompanying drawings and examples.
Embodiment：A kind of multiple protector of DC charging equipment safety charging, as shown in figure 1, including control unit
1st, jerk detection unit 2, temperature detecting unit 3, power module group 4, vehicle BMS9, over-current detection unit 5 and overvoltage detection are single
Member 6, control unit simultaneously with jerk detection unit, temperature detecting unit, over-current detection unit, over-pressed detection unit, power supply mould
Block group is connected, and control unit is also connected by CAN BUS1 with vehicle BMS, and control unit also passes through CANBUS2 and control
Being spaced apart for power module group 7 is connected.Control unit is connected by CANBUS1 with vehicle BMS.Multiple protector also includes
Accessory power supply 8, accessory power supply are powered to control unit.
Multiple protector is protected by triple protection to charging equipment, is specially：
1) first order is protected：System mode according to detecting is protected
A, jerk is protected：System detectio is to the physical connection that charging equipment and electric automobile are disconnected in 50ms after emergent stop signal
And module for power supply of cutting off the electricity supply, terminate this charging flow.
B, overvoltage protection：Set system voltage to protect threshold values Vp, in charging process, persistently whether detect charging voltage value
More than Vp, if then cut-out power supply, terminates this charging flow.
C, overcurrent protection：Set system power to protect threshold values Ip, in charging process, persistently whether detect charging current value
More than Ip, if then cut-out power supply, complete charge flow.
D, over-temperature protection：Setting system over-temperature protection threshold values Tp, recover threshold values Tpr, in charging process, lasting detection
Whether system temperature is more than Tp, if then reducing 1/2 charging current, when detecting that system temperature is less than Tpr, and recovery system demand
Charging current.Wherein Tp is more than Tpr.
E, system insulation abnormal protection and high voltage connector adhesion protection：In system prepares to start charging process, system
Meeting self-test, if it is checked that system insulation exception or high voltage connector adhesion, then terminate this charging flow.
F, Communications failure is protected：In charging process, between each monitoring unit Communications failure or with battery management system communicate
Failure, then terminate this charging flow.
2) second level is protected：Protected by the threshold values interacted with battery management system
A, the maximum allowable charging voltage protection of battery pack：In charging process, persistently detect whether charging voltage value is more than electricity
The maximum allowable charging voltage value of battery pack of pond management system transmission, if then terminating this charging flow.
B, the maximum allowable charging current protection of battery pack：In charging process, persistently detect whether charging current value is more than electricity
The maximum allowable charging current value of battery pack of pond management system transmission, if then terminating this charging flow.
3) third level is protected：Redundancy protecting is carried out by real time charging data
A, protection is overcharged：The battery total electricity Qm and battery charge state transmitted according to handshake phase battery management system
(SOC) D, chargeable amount Qs=(1-D) the * Qm of battery is calculated, obtain ammeter electricity in charging process in real time, judgement has been charged
Whether amount is more than the chargeable amount of battery, if then terminating this charging flow.
B, charging interval long protection：In charging process, charge volume Q=∫ (Vt*It) dt, wherein Vt, It is respectively t
Charging voltage, the charging current at moment.When the T moment, charge volume Q was more than the chargeable amount of battery, terminate this charging flow.
C, BMS transmits battery data abnormal protection：In charging process, battery management system transmits the charged of battery in real time
State (SOC), if charge volume is increasing, but state-of-charge does not increase and either reduced or equal to 100%, then battery management system
System transmission data exception, terminates this charging flow.
Claims (2)
1. a kind of multiple protector of DC charging equipment safety charging, it is characterized in that, including control unit, jerk detection list
Member, temperature detecting unit, power module group, over-current detection unit and over-pressed detection unit, control unit detect with jerk simultaneously
Unit, temperature detecting unit, over-current detection unit, over-pressed detection unit, power module group are connected, and control unit also passes through
CAN BUS1 are connected with vehicle BMS, and control unit is also connected by CANBUS2 with being spaced apart for power module group of control.
2. a kind of multiple protector of DC charging equipment safety charging according to claim 1, it is characterized in that, also wrap
Accessory power supply is included, accessory power supply is powered to control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720134260.7U CN206947964U (en) | 2017-02-14 | 2017-02-14 | A kind of multiple protector of DC charging equipment safety charging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720134260.7U CN206947964U (en) | 2017-02-14 | 2017-02-14 | A kind of multiple protector of DC charging equipment safety charging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206947964U true CN206947964U (en) | 2018-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720134260.7U Active CN206947964U (en) | 2017-02-14 | 2017-02-14 | A kind of multiple protector of DC charging equipment safety charging |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106712209A (en) * | 2017-02-14 | 2017-05-24 | 浙江万马新能源有限公司 | Multi-protection device and protection method for safe charging of direct current charging equipment |
-
2017
- 2017-02-14 CN CN201720134260.7U patent/CN206947964U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106712209A (en) * | 2017-02-14 | 2017-05-24 | 浙江万马新能源有限公司 | Multi-protection device and protection method for safe charging of direct current charging equipment |
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