CN213056773U - Electric automobile charging protection system capable of preventing electric shock - Google Patents
Electric automobile charging protection system capable of preventing electric shock Download PDFInfo
- Publication number
- CN213056773U CN213056773U CN202020936540.1U CN202020936540U CN213056773U CN 213056773 U CN213056773 U CN 213056773U CN 202020936540 U CN202020936540 U CN 202020936540U CN 213056773 U CN213056773 U CN 213056773U
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- Prior art keywords
- switch
- storage battery
- mouthful
- relay switch
- charging port
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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)
Abstract
The utility model discloses a but electric automobile charging protection system of protection against electric shock, fill mouthful and exchange and dash mouthful slowly including storage battery, battery management system, direct current, the direct current fills mouthful and exchanges and dash mouthful and be equipped with switch S1 and switch S2 slowly respectively soon, switch S1 and switch S2 both ends are parallelly connected and are connected with battery management system. The utility model discloses simple structure can effectively avoid among the charging process direct current to fill mouthful and exchange and fill the electric shock risk that mouthful opened simultaneously soon.
Description
Technical Field
The utility model relates to an electric automobile technical field, concretely relates to but electric automobile charging protection system of protection against electric shock.
Background
With the rapid development of new energy, the reserve of electric automobiles is steadily increasing. The electric automobile has two different interfaces of direct current fast charging and alternating current slow charging according to different charging modes. When the existing electric automobile is charged quickly, the slow charging port can still be opened, and when the existing electric automobile is charged slowly, the fast charging port can also be opened. If the vehicle with the battery pack charging and discharging loop is in a direct quick charging process (taking the quick charging port as an example), the slow charging port is exposed once the slow charging port is opened artificially. The charging opening cover is opened, so that the charging is not finished, the output of high voltage is stopped, at the moment, if a pedestrian unconsciously touches an exposed point of the slow charging opening, the danger of high voltage contact exists, and the risk of charging failure caused by the reduction of the insulation performance of the whole vehicle when the slow charging opening cover is opened in rainy days also exists. The communication slow charging risk is the same as the above.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough of above-mentioned background art, provide a but electric automobile charging protection system of protection against electric shock.
In order to realize above purpose, the utility model provides a pair of but electric automobile of protection against electric shock protection system that charges, fill mouthful and exchange including storage battery, battery management system, direct current and dash mouthful slowly, but the electric automobile of protection against electric shock protection system that charges can't charge when direct current fills mouthful and exchanges and dash mouthful and open simultaneously slowly.
Preferably, the positive electrode of the direct-current quick charging port is connected with the positive electrode of the storage battery through a relay switch K1, the negative electrode of the direct-current quick charging port is connected with the negative electrode of the storage battery through a main negative relay switch K3, the alternating-current slow charging port is connected with the storage battery through a vehicle-mounted charger, the positive electrode output end of the vehicle-mounted charger is connected with the positive electrode of the storage battery through a relay switch K2, the negative electrode output end of the vehicle-mounted charger is connected with the negative electrode of the storage battery through a main negative relay switch K3, the control ends of the relay switch K1, the relay switch K2 and the main negative relay switch K3 are all connected with a battery management system, the direct-current quick charging port and the alternating-current slow charging port are respectively provided with a switch S1 and a switch S2, and the two ends of the switch S23.
The utility model provides a beneficial effect that technical scheme brought is:
the utility model discloses simple structure can effectively avoid among the charging process direct current to fill mouthful and exchange and fill the electric shock risk that mouthful opened simultaneously soon.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic diagram of the connection structure of the switches S1 and S2 according to the present invention;
in the figure: the device comprises a storage battery pack 1, a battery management system 2, a direct current quick charging port 3, an alternating current slow flushing port 4 and a vehicle-mounted charger 5.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 2, the electric vehicle charging protection system capable of preventing electric shock includes a storage battery pack 1, a battery management system 2, a direct current fast charging port 3 and an alternating current slow charging port 4, the positive electrode of the direct current fast charging port 3 is connected with the positive electrode of the storage battery pack 1 through a relay switch K1, the negative electrode of the direct current fast charging port 3 is connected with the negative electrode of the storage battery pack 1 through a main negative relay switch K3, the alternating current slow charging port 4 is connected with the storage battery pack 1 through a vehicle-mounted charger 5, the positive electrode output end of the vehicle-mounted charger 5 is connected with the positive electrode of the storage battery pack 1 through a relay switch K2, the negative electrode output end of the vehicle-mounted charger 5 is connected with the negative electrode of the storage battery pack 1 through a main negative relay switch K3, control ends of the relay switch K1, the relay switch K2 and the main negative relay switch K3 are all connected with the battery management system 2, the direct current fast charging port 3 and the alternating current slow, the switch S1 and the switch S2 are connected in parallel to the battery management system 2.
The utility model discloses a concrete theory of operation does:
the battery management system 2 outputs a 12V voltage signal to the switch S1 and the switch S2, and when the fast charging gun is plugged in, the dc fast charging port 3 is opened, the switch S1 is opened, the ac slow charging port 4 is closed, and the switch S2 is closed. At this time, the battery management system 2 detects that the charging port state signal is normally 12V, closes the relay switch K1 and the main-negative relay switch K3, and the vehicle starts quick charging. When the slow charging gun is plugged, the direct current fast charging port 3 is closed, the switch S1 is closed, the alternating current slow charging port 4 is opened, and the switch S2 is opened. At this time, the battery management system 2 detects that the charging port state signal is normally 12V, closes the relay switch K2 and the main-negative relay switch K3, and the vehicle starts slow charging. At this moment, no matter fill soon or fill slowly and charge, the human body can't touch another one and charge mouthful, effectively avoids the risk of electrocution. When the direct-current quick charging port 3 and the alternating-current slow charging port 4 are opened simultaneously, and the battery management system 2 detects that the state signal of the charging port is abnormal to be 0V at a low level, the battery management system 2 immediately disconnects the main negative relay K3, and charging stops.
Other parts not described in detail are known in the art.
Claims (1)
1. The utility model provides a but electric automobile of protection against electric shock protection system that charges, includes storage battery (1), battery management system (2), direct current fill mouthful (3) soon and exchange and dash mouthful (4) slowly, its characterized in that: the electric vehicle charging protection system capable of preventing electric shock cannot be charged when a direct-current quick charging port (3) and an alternating-current slow flushing port (4) are simultaneously opened, the positive electrode of the direct-current quick charging port (3) is connected with the positive electrode of a storage battery pack (1) through a relay switch K1, the negative electrode of the direct-current quick charging port (3) is connected with the negative electrode of the storage battery pack (1) through a main negative relay switch K3, the alternating-current slow flushing port (4) is connected with the storage battery pack (1) through a vehicle-mounted charger (5), the positive output end of the vehicle-mounted charger (5) is connected with the positive electrode of the storage battery pack (1) through a relay switch K2, the negative output end of the vehicle-mounted charger (5) is connected with the negative electrode of the storage battery pack (1) through a main negative relay switch K3, control ends of the relay switch K1, the relay switch K2 and a main negative relay K3 are, the direct-current quick charging port (3) and the alternating-current slow flushing port (4) are respectively provided with a switch S1 and a switch S2, and two ends of the switch S1 and two ends of the switch S2 are connected in parallel and are connected with the battery management system (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020936540.1U CN213056773U (en) | 2020-05-28 | 2020-05-28 | Electric automobile charging protection system capable of preventing electric shock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020936540.1U CN213056773U (en) | 2020-05-28 | 2020-05-28 | Electric automobile charging protection system capable of preventing electric shock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213056773U true CN213056773U (en) | 2021-04-27 |
Family
ID=75565162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020936540.1U Active CN213056773U (en) | 2020-05-28 | 2020-05-28 | Electric automobile charging protection system capable of preventing electric shock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213056773U (en) |
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2020
- 2020-05-28 CN CN202020936540.1U patent/CN213056773U/en active Active
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