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CN-122008918-A - Charging thermal runaway active protection device, system, method and vehicle

CN122008918ACN 122008918 ACN122008918 ACN 122008918ACN-122008918-A

Abstract

The embodiment of the invention relates to the technical field of thermal runaway active protection, and discloses a charging thermal runaway active protection device, a system, a method and a vehicle, wherein the charging thermal runaway active protection device comprises a first locking piece, a second locking piece, a pop-up driving piece, a locking component and a bolt control component; the second locking piece is provided with a charging gun locking groove, the locking assembly is used for locking or unlocking the first locking piece and the second locking piece, the bolt control assembly is connected with the locking assembly and used for receiving unlocking control signals and driving the locking assembly to execute unlocking operation, and the ejection driving piece is used for driving the second locking piece to eject when the first locking piece and the second locking piece are in an unlocking state. According to the invention, the charging gun can be pushed out from the charging port of the vehicle when the charging thermal runaway occurs, so that the thermal runaway of the vehicle caused by fire conditions due to overheat of the charging equipment is actively avoided.

Inventors

  • WU QILONG
  • CHEN ZHUO
  • LI DONGJIANG
  • WANG DAEN

Assignees

  • 深蓝汽车科技有限公司

Dates

Publication Date
20260512
Application Date
20260409

Claims (10)

  1. 1. The active protection device for the thermal runaway of charging is characterized by comprising a first locking piece (1), a second locking piece (2), an ejection driving piece (4), a locking component and a bolt control component; The second locking piece (2) is provided with a charging gun locking groove (3); the lock catch assembly is used for locking and unlocking the first lock catch piece (1) and the second lock catch piece (2); the latch control assembly is connected with the lock catch assembly and is used for receiving an unlocking control signal and driving the lock catch assembly to execute unlocking operation; the ejection driving piece (4) is used for driving the second locking piece (2) to eject when the first locking piece (1) and the second locking piece (2) are in an unlocking state.
  2. 2. The active protection device for thermal runaway charging according to claim 1, characterized in that said latch assembly comprises a pin (8), a limit structure cooperating with said pin (8) and an elastic element (9); The limiting structure comprises a bolt containing groove (11) formed in the end part of the first locking piece (1) and a limiting slot (22) formed in the end part of the second locking piece (2); The bolt (8) is positioned in the bolt accommodating groove (11), the first end of the bolt (8) stretches into the limit slot (22) to lock the first locking piece (1) and the second locking piece (2), and the first end of the bolt (8) is separated from the limit slot (22) to unlock the first locking piece (1) and the second locking piece (2); The elastic piece (9) is sleeved on the bolt (8), the elastic piece (9) applies elastic force towards the first end of the bolt (8), and when the first locking piece (1) and the second locking piece (2) are in a locking state, and the bolt control assembly does not work, the first end of the bolt (8) keeps extending into the limit slot (22).
  3. 3. Active protection device against thermal runaway in charge according to claim 2, characterized in that the first end of the plug pin (8) is arranged in a triangular configuration.
  4. 4. The active protection device for thermal runaway charging according to claim 1, characterized in that a connection block (21) is provided on the second locking element (2), a first end of the ejection driving element (4) is connected to the vehicle body, and a second end of the ejection driving element (4) is connected to the connection block (21).
  5. 5. The active thermal runaway protection device according to claim 2, characterized in that the latch control assembly comprises an unlocking drive (5) and a transmission mechanism; The unlocking driving piece (5) is connected with the transmission mechanism, and the unlocking driving piece (5) drives the bolt (8) to move towards the second end of the bolt through the transmission mechanism so as to realize unlocking.
  6. 6. The active protection device for thermal runaway charging according to claim 5, characterized in that the output shaft of the unlocking drive (5) is connected with a worm (51), the second end of the plug pin (8) is provided with a rack (81); The transmission mechanism comprises a worm wheel (6) and a gear (7) which are meshed with each other, the worm wheel (6) is meshed with the worm (51), the gear (7) is meshed with the rack (81), and the unlocking driving piece (5) is matched with the rack (81) through the worm (51), the worm wheel (6) and the gear (7) to drive the bolt (8) to move along the bolt accommodating groove (11).
  7. 7. A charging thermal runaway active protection system comprising a control unit and the charging thermal runaway active protection device according to any one of claims 1 to 6; the control unit is used for sending an unlocking control signal to a plug pin control component of the active protection device for thermal runaway of charging when detecting that the vehicle is abnormal in charging; the latch control component drives the lock catch component of the charging thermal runaway active protection device to execute unlocking operation based on the unlocking control signal.
  8. 8. The active protection system for thermal runaway charging system of claim 7, wherein the control unit is further configured to collect information related to a charging anomaly and determine whether the vehicle is experiencing the charging anomaly based on the information.
  9. 9. A method for actively protecting against thermal runaway in charging, characterized in that the method for actively protecting against thermal runaway in charging according to claim 7 or 8 comprises the steps of: determining whether the vehicle is in a charging state and whether the charging abnormality occurs; When the abnormal charging of the vehicle is determined, an unlocking control signal is sent to a plug pin control component of the charging thermal runaway active protection device through a control unit, and the plug pin control component drives a lock catch component of the charging thermal runaway active protection device to unlock based on the unlocking control signal; After the lock catch assembly performs unlocking operation, kinetic energy is released through the ejection driving piece (4) of the charging thermal runaway active protection device, and the second lock catch piece (2) of the charging thermal runaway active protection device is ejected, so that the charging gun is ejected from a charging port of a vehicle.
  10. 10. A vehicle comprising the active thermal runaway protection device for charging of any one of claims 1 to 6, or the active thermal runaway protection system for charging of any one of claims 7 to 8.

Description

Charging thermal runaway active protection device, system, method and vehicle Technical Field The invention relates to the technical field of active protection of thermal runaway of vehicles, in particular to an active protection device, an active protection system and an active protection method for thermal runaway of charging and a vehicle. Background The alternating-current charging has the advantages of low construction and use cost and small influence on the service life of the battery compared with direct-current quick charging, and is the most popular charging mode at present, and the alternating-current charging equipment is used as an infrastructure for guaranteeing daily use of new energy automobiles and mainly comprises two types of fixed-position alternating-current charging piles and portable charging guns at present. However, in the long-term use process, the ac charging equipment is easy to have problems of insulation aging, poor heat dissipation and the like, or contact resistance is increased due to rust, material degradation and the like, so that equipment short circuit and fire are caused. Because equipment and vehicle are in connected state all the time in the charging process, the fire can ignite the vehicle along the pencil that charges, leads to the fire to enlarge, seriously threatens user's life and property safety. Disclosure of Invention In view of the above-mentioned shortcomings of the prior art, an object of the present application is to provide an active protection device, system, method and vehicle for thermal runaway of charging gun, which can push out the charging gun from the charging port of the vehicle when thermal runaway of charging occurs, so as to actively avoid thermal runaway of the vehicle caused by fire caused by overheat of the charging device. In a first aspect, an embodiment of the present application provides a thermal runaway active protection device for charging, including a first latch member, a second latch member, a pop-up driving member, a latch assembly, and a latch control assembly; the second locking piece is provided with a charging gun locking groove; the lock catch assembly is used for locking and unlocking the first lock catch piece and the second lock catch piece; the latch control assembly is connected with the lock catch assembly and is used for receiving an unlocking control signal and driving the lock catch assembly to execute unlocking operation; the ejecting driving piece is used for driving the second locking piece to eject when the first locking piece and the second locking piece are in an unlocking state. In the above technical scheme, when the thermal runaway that charges that takes place, the bolt control assembly can respond the unblock control signal fast, and the cooperation pops out the driving piece and pops out the second latch piece fast when charging unusual, and the second latch piece pops out the time can be with charging gun from the vehicle mouth of charging release to make the vehicle separate with charging equipment on the physical layer, initiatively avoid causing the vehicle to appear thermal runaway because of the overheated condition of leading to of charging equipment. Because the rifle hasp groove that charges sets up on the second hasp piece, so when taking place to charge unusual, the locking state between the rifle that charges and the rifle hasp groove that charges of not needing to unblock earlier, but directly pop out second hasp piece and rifle that charges together, so do not need to change the structure of rifle that charges to the commonality of device has been improved. One possible implementation mode, the lock catch assembly comprises a bolt, a limiting structure matched with the bolt and an elastic piece; the limiting structure comprises a bolt containing groove and a limiting slot, the bolt containing groove is formed in the end part of the first locking piece, and the limiting slot is formed in the end part of the second locking piece; The bolt is positioned in the bolt accommodating groove, the first end of the bolt stretches into the limiting slot to lock the first locking piece and the second locking piece, and the first end of the bolt is separated from the limiting slot to unlock the first locking piece and the second locking piece; the elastic piece is sleeved on the bolt, the elastic piece applies elastic force towards the first end of the bolt, and when the first locking piece and the second locking piece are in a locking state, and the bolt control assembly does not work, the first end of the bolt keeps extending into the limiting slot. According to the technical scheme, through the cooperation of the bolt, the elastic piece, the bolt storage groove and the limiting slot, the accurate locking of the first locking piece and the second locking piece is realized, the locking structure is stable and reliable, looseness is not easy to occur, the bolt can stably move along the bolt storage groove