CN111923713A - Unlocking method and system and locking method and system of vehicle battery pack - Google Patents
Unlocking method and system and locking method and system of vehicle battery pack Download PDFInfo
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- CN111923713A CN111923713A CN201910394652.0A CN201910394652A CN111923713A CN 111923713 A CN111923713 A CN 111923713A CN 201910394652 A CN201910394652 A CN 201910394652A CN 111923713 A CN111923713 A CN 111923713A
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- locking
- battery pack
- lock
- linkage part
- unlocking
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 230000007246 mechanism Effects 0.000 claims abstract description 131
- 230000001681 protective effect Effects 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 230000001012 protector Effects 0.000 claims description 9
- 230000009471 action Effects 0.000 abstract description 9
- 230000005674 electromagnetic induction Effects 0.000 description 31
- 210000002105 tongue Anatomy 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000013459 approach Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S5/00—Servicing, maintaining, repairing, or refitting of vehicles
- B60S5/06—Supplying batteries to, or removing batteries from, vehicles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
- H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/90—Vehicles comprising electric prime movers
- B60Y2200/91—Electric vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2400/00—Special features of vehicle units
- B60Y2400/30—Sensors
- B60Y2400/301—Sensors for position or displacement
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses an unlocking method and system and a locking method and system of a vehicle battery pack, wherein the unlocking method comprises the following steps: the battery replacing device moves to a first preset position; the battery replacing device unlocks the protection device to release the limitation on the locking linkage part; judging whether the protection device is unlocked in place or not; if so, moving the locking linkage part to an unlocking state to unlock the locking mechanism; the battery changing device moves the battery pack away from the locking mechanism. The invention can accurately control the unlocking and locking actions of the vehicle battery pack, improves the unlocking and locking efficiency and precision of the battery pack and reduces the battery replacement cost.
Description
Technical Field
The invention belongs to the technical field of battery replacement of electric vehicles, and particularly relates to an unlocking method and system and a locking method and system of a vehicle battery pack.
Background
The electric vehicle is developed rapidly and is applied more and more widely. When the electric quantity is insufficient, a user can drive the electric vehicle into the battery replacing station to replace the battery pack. Whether the battery pack is installed in place is the key for successful battery replacement. The battery pack is generally disposed at the bottom of the electric vehicle. In the prior art, the battery pack is mostly replaced manually, the installation efficiency is low, and the waiting time of a user is increased; in addition, when an operator installs the battery pack at the bottom of the automobile, potential safety hazards exist; in addition, the battery pack is heavy, so that the battery pack is unstable in lifting during manual installation, and the situations of inaccurate installation and short installation are easy to occur.
Disclosure of Invention
The invention aims to overcome the defects of low efficiency, inaccurate installation of a battery pack and short time in the prior art when the battery pack is replaced for an electric automobile, and provides an efficient and high-precision unlocking method and system, and a locking method and system for a vehicle battery pack.
The invention solves the technical problems through the following technical scheme:
the invention provides an unlocking method of a vehicle battery pack, wherein a battery pack bracket of a vehicle is provided with a protection device and a locking mechanism; the locking mechanism comprises a locking linkage part and a lock base, the locking linkage part moves relative to the lock base to switch between an unlocking state and a locking state, and the battery pack is locked when the locking linkage part is in the locking state; the protection device is arranged on a moving path of the locking linkage part to limit or release the limitation of the movement of the locking linkage part relative to the lock base;
the unlocking method comprises the following steps:
the battery replacing device moves to a first preset position;
the battery replacing device unlocks the protection device to release the limitation on the locking linkage part;
judging whether the protection device is unlocked in place, if so, moving the locking linkage part to an unlocking state to unlock the locking mechanism;
the battery changing device moves the battery pack away from the locking mechanism.
Preferably, the protection device comprises a telescopic pin and a control mechanism, the telescopic pin moves between a locking position and an unlocking position relative to the locking linkage part to limit or release the limitation on the locking linkage part, the control mechanism is used for controlling the telescopic pin to move, and the battery replacing device unlocks the protection device to release the limitation on the locking linkage part comprises the following steps:
the battery replacing device sends an unlocking instruction to the control mechanism after moving to a first preset position;
the control mechanism controls the telescopic pin to retract to the unlocking position.
Preferably, the protection device further comprises a position sensor for detecting whether the protection device is unlocked in place.
Preferably, the locking linkage part comprises a lock tongue and a lock connecting rod, and the lock connecting rod is used for driving the lock tongue to rotate under the action of external force so as to unlock or lock the battery pack; moving the locking linkage to the unlocked state to unlock the locking mechanism includes: the battery replacing device controls the lock connecting rod to drive the lock tongue to rotate so as to unlock the battery pack.
The invention also provides a locking method of the vehicle battery pack, wherein a protection device and a locking mechanism are arranged on a battery pack bracket of the vehicle; the locking mechanism comprises a locking linkage part and a lock base, the locking linkage part moves relative to the lock base to switch between an unlocking state and a locking state, and the battery pack is locked when the locking linkage part is in the locking state; the protection device is arranged on a moving path of the locking linkage part to limit or release the limitation of the movement of the locking linkage part relative to the lock base;
the locking method comprises the following steps:
the battery replacing device drives the battery pack to move to a second preset position;
the battery replacing device unlocks the protection device to release the limitation on the locking linkage part;
judging whether the protection device is unlocked in place or not, if so, driving the battery pack to enter a locking mechanism and moving a locking linkage part to an unlocked state by the battery replacing device;
and judging whether the locking linkage part is in a locking state, if so, limiting the locking linkage part to move relative to the lock base by the locking protection device of the battery replacing device.
Preferably, the lock base is provided with an opening and a cavity extending from the opening, the opening is used for allowing a lock shaft mounted on the battery pack to enter the cavity, the locking linkage part moves relative to the lock base to open or close the opening to switch between the unlocking state and the locking state, and the battery replacing device drives the battery pack to enter the locking mechanism and moves the locking linkage part to the locking state, and the battery replacing device comprises:
the battery replacing device drives the locking linkage part to move so as to open the opening;
the battery replacing device drives the lock shaft of the battery pack to enter the opening and move to the locking point;
the battery replacing device drives the locking linkage part to move so as to close the opening.
Preferably, the locking mechanism further includes a position sensor, and the determining whether the locking linkage portion is in the locked state includes: the position sensor detects whether the lock shaft of the battery pack reaches a lock point of the lock mechanism.
Preferably, the protection device comprises a telescopic pin and a control mechanism, the telescopic pin moves between a locking position and an unlocking position relative to the locking linkage part, the control mechanism is used for driving the telescopic pin to move, and the locking protection device on the battery replacing device is used for limiting the locking linkage part to move relative to the lock base and comprises:
the battery replacing device sends a locking instruction to the control mechanism;
the control mechanism controls the telescopic pin to move to the locking position.
The invention also provides an unlocking system of the vehicle battery pack, which comprises a battery replacing device, a protecting device arranged on the battery pack bracket and a locking mechanism; the locking mechanism comprises a locking linkage part and a lock base, the locking linkage part moves relative to the lock base to switch between an unlocking state and a locking state, and the battery pack is locked when the locking linkage part is in the locking state; the protection device is arranged on a moving path of the locking linkage part to limit or release the limitation of the movement of the locking linkage part relative to the lock base;
the battery replacing device is used for unlocking the protection device after moving to the first preset position so as to remove the limitation on the locking linkage part, and the protection device is also used for generating a first unlocking signal after unlocking in place;
the battery replacing device is also used for moving the locking linkage part to an unlocking state according to the first unlocking signal so as to unlock the locking mechanism;
the battery replacing device is also used for moving the battery pack away from the locking mechanism after the locking mechanism is unlocked.
Preferably, the protection device comprises a telescopic pin and a control mechanism, the telescopic pin moves between a locking position and an unlocking position relative to the locking linkage part to limit or release the limitation of the locking linkage part, and the control mechanism is used for controlling the telescopic pin to move;
the battery replacing device is also used for sending an unlocking instruction to the control mechanism after moving to the first preset position;
the control mechanism is used for controlling the telescopic pin to retract to the unlocking position after receiving the unlocking instruction.
Preferably, the protection device further comprises a position sensor for detecting whether the protection device is unlocked in place.
Preferably, the locking linkage part comprises a lock tongue and a lock connecting rod, and the lock connecting rod is used for driving the lock tongue to rotate under the action of external force so as to unlock or lock the battery pack; the battery replacing device is also used for controlling the lock connecting rod to drive the lock tongue to rotate so as to unlock the battery pack.
The invention also provides a locking system of the vehicle battery pack, which comprises a battery replacing device, a protecting device arranged on the battery pack bracket and a locking mechanism; the locking mechanism comprises a locking linkage part and a lock base, the locking linkage part moves relative to the lock base to switch between an unlocking state and a locking state, and the battery pack is locked when the locking linkage part is in the locking state; the protection device is arranged on a moving path of the locking linkage part to limit or release the limitation of the movement of the locking linkage part relative to the lock base;
the battery replacing device is used for unlocking the protection device to remove the limitation on the locking linkage part after driving the battery pack to move to the second preset position;
the protection device is used for generating a first instruction signal after unlocking in place;
the battery replacing device is also used for driving the battery pack to enter the locking mechanism and moving the locking linkage part to the locked state after receiving the first instruction signal;
the locking mechanism is used for judging whether the locking linkage part is in a locking state, and if so, the locking mechanism is also used for generating a first locking signal;
the battery replacing device is used for locking the protection device after receiving the first locking signal so as to limit the locking linkage part to move relative to the lock base.
Preferably, the lock base is provided with an opening and a cavity extending from the opening, the opening is used for allowing a lock shaft mounted on the battery pack to enter the cavity, and the locking linkage part moves relative to the lock base to open or close the opening so as to switch between an unlocking state and a locking state;
the battery replacing device is also used for driving the locking linkage part to move so as to open the opening;
the battery replacing device is also used for driving the lock shaft of the battery pack to enter the opening and move to the locking point; the battery replacing device is also used for driving the locking linkage part to move so as to close the opening.
Preferably, the locking mechanism further includes a position sensor for detecting whether the lock shaft of the battery pack reaches a lock point of the locking mechanism.
Preferably, the protection device comprises a telescopic pin and a control mechanism, the telescopic pin moves between a locking position and an unlocking position relative to the locking linkage part, and the control mechanism is used for driving the telescopic pin to move;
the battery replacing device is also used for sending a locking instruction to the control mechanism;
the control mechanism is used for controlling the telescopic pin to move to the locking position.
Preferably, a magnetic field sensor is arranged in the cavity, and the lock shaft is provided with magnetic steel; the magnetic field sensor is used for sensing a magnetic field generated by the magnetic steel and generating a locking starting signal when sensing the magnetic field, and the locking starting signal represents that the lock shaft enters the cavity;
the battery replacing device is also used for driving the locking linkage part to move according to the locking starting signal so as to close the opening.
The positive progress effects of the invention are as follows: the invention can accurately control the unlocking and locking actions of the vehicle battery pack, improves the unlocking and locking efficiency and precision of the battery pack and reduces the battery replacement cost.
Drawings
Fig. 1 is a schematic structural view of an unlocking system for a vehicle battery pack according to embodiment 1 of the present invention.
Fig. 2 is a partial structural schematic diagram of an unlocking system of a vehicle battery pack according to embodiment 1 of the present invention.
Fig. 3 is a schematic structural view of a lock mechanism in the unlocking system of the vehicle battery pack according to embodiment 1 of the present invention.
Fig. 4 is a schematic view of the overall structure of a protection device in an unlocking system for a vehicle battery pack according to embodiment 1 of the present invention
Fig. 5 is a schematic sectional view showing a protective device in an unlocking system for a vehicle battery pack according to embodiment 1 of the present invention, in which a telescopic pin is in an extended state.
Fig. 6 is an exploded schematic view of a protection device in an unlocking system for a vehicle battery pack according to embodiment 1 of the present invention.
Fig. 7 is another sectional structural view of the protective device in the unlocking system of the vehicle battery pack according to embodiment 1 of the invention, in which the telescopic pin is in a retracted state.
Fig. 8 is a schematic structural view of a telescopic pin in a protective device in an unlocking system for a vehicle battery pack according to embodiment 1 of the present invention.
Fig. 9 is a schematic structural view of a power pin in a protection device in an unlocking system of a vehicle battery pack according to embodiment 1 of the present invention.
Fig. 10 is a flowchart of an unlocking method of a vehicle battery pack according to embodiment 1 of the invention.
Fig. 11 is a schematic configuration diagram of a locking system of a vehicle battery pack according to embodiment 2 of the present invention.
Fig. 12 is a flowchart of an unlocking method of a vehicle battery pack according to embodiment 2 of the invention.
Detailed Description
The present invention is further illustrated by the following preferred embodiments, but is not intended to be limited thereby.
Example 1
The present embodiment provides an unlocking system for a vehicle battery pack, and referring to fig. 1 to 9, the unlocking system includes a battery replacing device 41, a protection device 10 disposed on a battery pack support, and a locking mechanism 20. The locking mechanism 20 includes a lock linkage 201 and a lock base 202, the lock linkage 201 moves relative to the lock base 202 to switch between an unlocked state and a locked state, and the lock linkage 201 locks the battery pack in the locked state. The protector 10 is provided on a movement path of the lock interlocking portion 201 to restrict or release the restriction of the movement of the lock interlocking portion 201 with respect to the lock base 202. The battery exchange device 41 is configured to unlock the protection device 10 after moving to the first predetermined position to release the restriction of the lock linkage 201, and the protection device 10 is further configured to generate a first unlock signal after unlocking to the position. The battery replacement device 41 is also configured to move the locking linkage 201 to the unlocked state in accordance with the first unlocking signal to unlock the locking mechanism 20. The battery replacing device 41 is also used to move the battery pack away from the locking mechanism 20 after the locking mechanism 20 is unlocked.
As will be understood by referring to fig. 2 and 3, the locking mechanism 20 has a locking linkage portion 201 and a lock base 202, the lock base 202 is provided with an opening for allowing a lock shaft (not shown) mounted to the battery pack to enter the cavity and a cavity extending from the opening, and the locking linkage portion 201 moves relative to the lock base 202 to open or close the opening to unlock or lock the lock shaft. The protection device 10 is disposed on a moving path of the locking linkage portion 201, and is used for limiting the movement of the locking linkage portion 201 relative to the lock base 202 to lock the lock shaft, so as to realize a function of locking the battery pack. The lock base 202 and the protector 10 are attached to opposite sides of the same side of the battery pack holder 30, respectively.
In the present embodiment, the protection device 10 can restrict the movement of the lock interlocking portion 201 with respect to the lock base 202, thereby improving the reliability of the lock mechanism 20 and reducing or avoiding the occurrence of the battery pack dropping-off phenomenon.
As will be understood by further referring to fig. 2 and 3, the locking linkage 201 includes a lock tongue 2011 and a lock link 2012, the lock tongue 2011 is connected to the lock link 2012 and can rotate relative to the lock base 202, and the lock link 2012 drives the lock tongue 2011 to rotate under the action of an external force to unlock or lock the lock shaft. The guard 10 is movable relative to the lock link 2012 between a third position and a fourth position. Wherein when the guard 10 is in the third position, the guard 10 acts on the lock link 2012 to limit movement of the lock link 2012 relative to the lock base 202; when the guard 10 is in the fourth position, the guard 10 is disengaged from the lock link 2012 to allow movement of the lock link 2012 relative to the lock base 202. The protector 10 is disposed in the lock base 202 on the side opposite to the lock shaft of the battery pack.
In this embodiment, the action of the guard 10 on the lock link is achieved by a portion of the guard 10 being pressed against the top of the lock link. In other alternative embodiments, this can also be achieved by a portion of the protective device 10 abutting against a side of the lock link.
The protector 10 includes a telescopic pin 102, and a control mechanism for controlling the telescopic pin 102 to move, the telescopic pin 102 moving between a lock position and an unlock position with respect to the lock interlocking part 201 to restrict or release the restriction of the lock interlocking part 201. As will be understood with reference to fig. 4-6, the guard 10 includes a first lower housing 101 and a telescoping pin 102. The first lower housing 101 is detachably connected to a side surface of the lock base 202 opposite to the lock shaft, the first lower housing 101 has a first receiving cavity 1011 inside, and a through hole 1012 formed on a side wall of the lower housing and communicating with the first receiving cavity 1011. The retractable pin 102 is disposed in the first receiving cavity 1011, and the retractable pin 102 is disposed through the through hole 1012 and can be switched between an extended state and a retracted state. When the telescopic pin 102 is in the extended state, the telescopic pin 102 is located at the third position; when the retractable pin 102 is in the retracted state, the retractable pin 102 is in the fourth position. The telescopic pin 102 is switched between the third position and the fourth position by controlling the extension and retraction of the telescopic pin 102, and the telescopic pin switching device is simple in structure and convenient to implement. In addition, as shown in fig. 2, a through hole 301 is formed in the battery pack holder 30, and the retractable pin 102 is switched between the third position and the fourth position through the through hole 301.
As will be understood with reference to fig. 4-6, the control mechanism includes a power pin 103, a first electromagnetic induction element 104, and a first elastic element 105. The power pin 103 acts on the telescopic pin 102, and the power pin 103 can move relative to the telescopic pin 102 to engage with or disengage from the telescopic pin 102. The first electromagnetic induction element 104 is disposed on the power pin 103, and the first electromagnetic induction element 104 is configured to drive the power pin 103 to apply an acting force to the retractable pin 102 along a retraction direction of the retractable pin 102 under the action of an external electromagnetic device. The first elastic element 105 is connected to one end of the telescopic pin 102 far from the cavity, the first elastic element 105 is abutted between the telescopic pin 102 and the inner wall surface of the first accommodating cavity 1011, and the first elastic element 105 is used for applying an acting force to the telescopic pin 102 along the extending direction of the telescopic pin 102. When the first electromagnetic induction element 104 is attracted with an external electromagnetic device, the power pin 103 is separated from the telescopic pin 102 and applies acting force to the telescopic pin 102 along the retraction direction so as to enable the telescopic pin 102 to be in the retraction state; when the first electromagnetic induction element 104 is separated from the external electromagnetic device, the first elastic element 105 applies a force to the telescopic pin 102 in the extending direction, and the power pin 103 engages with the telescopic pin 102 to place the telescopic pin 102 in the extended state.
In the present embodiment, when the first electromagnetic induction element 104 is attracted to an external electromagnetic device provided on the battery exchange apparatus 41, the power pin 103 moves away from the retractable pin 102, and applies a force to the retractable pin 102 in the retraction direction to retract the retractable pin 102, the retractable pin 102 presses the first elastic element 105, and after the power pin 103 and the retractable pin 102 are completely separated, the first elastic element 105 provides a restoring force to the retractable pin 102 to return the retractable pin 102 to a position for engaging with the power pin 103, and at this time, the retractable pin 102 is in the unlocking position. When the first electromagnetic induction element 104 is separated from the external electromagnetic device provided on the battery exchange apparatus 41, the power pin 103 moves in a direction close to the telescopic pin 102 to engage with the telescopic pin 102, so that the telescopic pin 102 is in an extended state and the telescopic pin 102 is in a lock position. In addition, in the scheme, the power pin 103 and the telescopic pin 102 are controlled to be connected and separated in a magnetic attraction mode, and then the telescopic pin 102 is controlled to extend and retract.
As will be understood with reference to fig. 4-8, the telescopic pin 102 has an actuating portion 1021 and a connecting portion 1022. The connecting portion 1022 is connected to an end of the executing portion 1021, which is away from the cavity, the connecting portion 1022 has a second receiving cavity 1023, and the second receiving cavity 1023 is used for receiving the power pin 103. The first elastic element 105 is connected to one end of the connecting portion 1022 far from the executing portion 1021, the first elastic element 105 abuts between the connecting portion 1022 and an inner wall surface of the first accommodating cavity 1011, and the first elastic element 105 applies an acting force to the connecting portion 1022 in an extending direction. When the power pin 103 is engaged with the retractable pin 102, one end of the power pin 103 close to the retractable pin 102 is engaged with the second receiving cavity 1023, which belongs to embedded connection and occupies less space.
In this embodiment, as shown in fig. 4 to 6, a first included angle is formed between the length direction of the connecting portion 1022 and the height direction of the power pin 103, and the first included angle is equal to 90 °, and the second receiving cavity 1023 extends along the height direction of the power pin 103, so that the power pin 103 moves relative to the retractable pin 102 along the height direction of the power pin 103.
It should be noted that in other alternative embodiments, the first included angle may be set to any angle between more than 0 ° and less than 90 °.
As will be understood by referring to fig. 4-6 and 9, the power pin 103 has a head end and a tail end along the height direction thereof, the head end of the power pin 103 is embedded in the second receiving cavity 1023, and the first electromagnetic induction element 104 is disposed at the tail end of the power pin 103. The inner wall surface of the second receiving cavity 1023 has a first inclined part 1024, and the head end of the power pin 103 has a second inclined part 1032 fitting the first inclined part 1024. When the power pin 103 is engaged with the retractable pin 102, the first inclined part 1024 is attached to the second inclined part 1032; when the power pin 103 is separated from the telescopic pin 102, the second inclined portion 1032 moves downward relative to the first inclined portion 1024 and applies a force in the retracting direction to the telescopic pin 102 to put the telescopic pin 102 in a retracted state.
In the present embodiment, by skillfully utilizing the cooperation of the first and second inclined parts 1024 and 1032, when the power pin 103 moves in a direction away from the telescopic pin 102, the first inclined part 1024 slides relative to the second inclined part 1032, and the frictional force applied to the second inclined part 1032 by the first inclined part 1024 can be decomposed into a component force in the retracting direction, under which the telescopic pin 102 retracts.
As will be understood by referring to fig. 6 and 9, the inner wall surface of the second receiving chamber 1023 further has a recessed portion 1025, and the head end of the power pin 103 has a protruding portion fitted into the recessed portion 1025. The inner wall surface of the second accommodating cavity 1023 has two first inclined parts 1024, and the two first inclined parts 1024 are oppositely disposed at two sides of the recessed part 1025.
In this embodiment, the recessed portion 1025 can act as a stop for the power pin 103, which helps to ensure reliable engagement of the power pin 103 with the retractable pin 102, thereby helping to achieve stable extension of the retractable pin 102 and reliable locking of the lock shaft.
As will be understood with reference to fig. 5, the first electromagnetic induction element 104 is embedded in the rear end of the power pin 103. The arrangement is such that the first electromagnetic induction element 104 does not occupy additional space outside the power pin 103, which is beneficial to improving the space utilization rate. In addition, it is also advantageous to protect the first electromagnetic induction element 104.
As will be understood by further referring to fig. 4-6, the rear end of the power pin 103 is sleeved with a second elastic element 106, and the second elastic element 106 applies a force to the power pin 103 in a direction approaching the connecting portion 1022; wherein the force exerted by the second elastic element 106 on the power pin 103 is greater than the weight force of the power pin 103. In the present embodiment, when the power pin 103 is engaged with the telescopic pin 102, the urging force applied to the power pin 103 by the second elastic member 106 can prevent the power pin 103 from falling down by gravity, and thus the reliability of the engagement of the power pin 103 with the telescopic pin 102 can be further improved. When the power pin 103 needs to move towards the direction close to the telescopic pin 102, the acting force applied to the power pin 103 by the second elastic element 106 can overcome the gravity of the power pin 103, so that the power pin 103 can move towards the direction close to the telescopic pin 102 more reliably.
As will be understood by further referring to fig. 3 to 6, the protection device 10 further includes a second lower housing 107, the second lower housing 107 is connected to the bottom of the first lower housing 101, the second lower housing 107 has a third accommodating cavity 1071, the third accommodating cavity 1071 is communicated with the first accommodating cavity 1011, and the power pin 103 is located in the third accommodating cavity 1071. A second included angle is formed between the central axis of the second lower casing 107 and the central axis of the first lower casing 101, and the second included angle is equal to the first included angle.
In the present embodiment, as will be understood by referring to fig. 5 to 6 and fig. 9, blocking portions 1031 are provided on the outer wall surface of the power pin 103 at positions corresponding to both ends of the second elastic member 106, and the second elastic member 106 is caught between the blocking portions 1031. That is, in the present embodiment, the second elastic element 106 is entirely fitted over the outer wall surface of the power pin 103, and the second elastic element 106 is a spring. Wherein the blocking part 1031 mainly functions to position the second elastic element 106 to limit the movement of the second elastic element 106 in the height direction of the power pin 103.
In other alternative embodiments, a part of the second elastic element 106 may be sleeved on the outer wall surface of the power pin 103, and another part of the second elastic element 106 abuts against the second lower housing 107, that is, a blocking portion 1031 is provided on the outer wall surface of the power pin 103 at a position corresponding to one end of the second elastic element 106, and the second elastic element 106 is clamped between the blocking portion 1031 and the second lower housing 107.
As will be appreciated with continued reference to fig. 3-6, the protective device 10 further includes an upper housing 108, the upper housing 108 being press fit into and removably attached to the first lower housing 101. The upper housing 108 can fix and protect the telescopic pin 102, the power pin 103, and the like. The upper housing 108 has a fourth accommodating cavity 1081, a first sensor 1082 is disposed in the fourth accommodating cavity 1081, and a second electromagnetic induction element 1026 is disposed on the executing portion 1021. The first sensor 1082 acts on the second electromagnetic induction element 1026 to detect that the executing portion 1021 is in the extended state. A second sensor 1083 is further disposed in the fourth accommodating cavity 1081, and the second sensor 1083 acts on the second electromagnetic induction element 1026 to detect that the executing portion 1021 is in the retracted state. Wherein the second sensor 1083 is closer to the power pin 103 than the first sensor 1082. When the telescopic pin 102 is in the extended state and the retracted state, the first sensor 1082, the second sensor 2083 and the second electromagnetic induction element 1026 can be reliably detected, which is beneficial to unlocking and locking the vehicle battery pack by the locking mechanism 20. In the present embodiment, the first electromagnetic induction element 104 and the second electromagnetic induction element 1026 are both magnetic steel.
In the present embodiment, the number of the protector 10 is plural, and the plural protectors 10 are provided to be uniformly pressed on the top of the lock link. In addition, in the present embodiment, the protection device 10 employs an electromagnetic attraction power pin to achieve extension and retraction of the retractable pin 102, and the extension and retraction of the retractable pin 102 are in the same linear direction. In other alternative embodiments, other driving manners (non-electromagnetic driving manners) may be used to achieve the extension and retraction of the retractable pin 102, the moving path of the retractable pin 102 may be set to be a curve, and other configurations of the non-retractable pin 102, such as a crank mechanism and a rocker mechanism, may also be used to achieve the switching between the third position and the fourth position of the protection device 10.
As for the lock mechanism 20, as will be understood with reference to fig. 2 and 3, the lock mechanism 20 includes three lock bases 202, three lock tongues 2011 are connected to the lock link 201, and the three lock tongues 2011 are provided in one-to-one correspondence with the three lock bases 202. The side of the lock connecting rod 201 facing the lock base 202 is further provided with an unlocking block 203, the unlocking block 203 is an arc-shaped protrusion formed outwards by the self-locking connecting rod 201, and the top of the unlocking block 203 is an inner arc groove recessed towards the lock connecting rod 201. In this embodiment, the protection device 10 acts on the middle of the lock link, which is beneficial to improving the stability of the lock link, and the reliability of the protection device 10 acting on the locking mechanism 20, thereby being beneficial to improving the reliability of the locking mechanism 20 for locking the battery pack.
The protection device 10 can restrict the movement of the locking linkage portion 201 relative to the lock base 202, thereby improving the reliability of the locking mechanism 20 and reducing or avoiding the occurrence of the phenomenon that the battery pack falls off.
In the present embodiment, a distance sensor is further disposed on the battery replacing device 41, and the distance sensor is used for detecting the distance between the battery replacing device 41 and the locking mechanism 20 to determine whether the battery replacing device 41 moves to the first predetermined position. In a preferred embodiment, the distance sensor is a photoelectric sensor. The photoelectric sensor is disposed below the battery exchange device 41, and faces the ground to detect the distance between the battery exchange device 41 and the ground. The battery replacing device 41 moves upward from below the battery pack holder and approaches the battery pack holder. The height of the battery pack holder is a known value. When the distance between the battery replacing device 41 and the ground reaches the preset distance, it indicates that the battery replacing device 41 reaches the first predetermined position. The first predetermined position is a position where the battery replacement device 41 can accurately unlock the unlock protection device 10.
At this time, the battery replacement device 41 sends an unlock command to the control mechanism. In specific implementation, the external electromagnetic device on the battery replacing device 41 is powered on to generate a magnetic field, and the external electromagnetic device on the battery replacing device 41 is attracted to the first electromagnetic induction element 104, so that the transmission of the unlocking instruction is completed.
The control mechanism controls the retraction pin 102 to retract to the unlocked position upon receiving an unlock command. In specific implementation, when the first electromagnetic induction element 104 is attracted to an external electromagnetic device disposed on the battery exchange apparatus 41, the power pin 103 moves away from the retractable pin 102, and applies an acting force to the retractable pin 102 in a retraction direction, so that the retractable pin 102 retracts, the retractable pin 102 presses the first elastic element 105, and after the power pin 103 and the retractable pin 102 are completely separated, the first elastic element 105 provides a restoring force to the retractable pin 102, so that the retractable pin 102 returns to a position for engaging with the power pin 103, and at this time, the retractable pin 102 is in an unlocked position.
The guard 10 also includes a position sensor that detects that the retractable pin 102 is in the unlocked position, indicating that the guard 10 has been unlocked. The protective device 10 generates a first unlock signal after unlocking in place.
Then, the battery exchange device 41 applies an external force to the lock link 2012 after receiving the first unlocking signal to rotate the lock bolt 2011 to unlock.
Next, the battery replacing device 41 grips the battery pack and moves the battery pack away from the lock mechanism 20. In specific implementation, the battery replacing device 41 clamps the battery pack to be removed from the bottom of the electric vehicle. At this point, the unlocking process of the vehicle battery pack is completed.
The embodiment also provides an unlocking method of the vehicle battery pack, which is realized by adopting the unlocking system of the vehicle battery pack. A battery pack bracket of the vehicle is provided with a protection device 10 and a locking mechanism 20; the locking mechanism 20 includes a locking linkage 201 and a lock base 202, the locking linkage 201 moves relative to the lock base 202 to switch between an unlocked state and a locked state, and the locking linkage 201 locks the battery pack in the locked state; the protector 10 is provided on a movement path of the lock interlocking portion 201 to restrict or release the restriction of the movement of the lock interlocking portion 201 with respect to the lock base 202.
Referring to fig. 10, the unlocking method includes the steps of:
in step S501, the battery replacing device 41 moves to a first predetermined position. The first predetermined position is a position where the battery replacement device 41 can accurately unlock the unlock protection device 10.
Step S502 is to unlock the protection device 10 by the battery exchange device 41 to release the restriction of the lock linkage 201.
Step S503, judging whether the protection device 10 is unlocked in place; if so, the lock linkage 201 is moved to the unlocked state to unlock the lock mechanism 20.
In step S504, the battery replacement device 41 moves the battery pack away from the lock mechanism 20.
Specifically, in step S501, the battery replacing device 41 moves upward from below the battery pack holder and approaches the battery pack holder. The photoelectric sensor provided below the battery replacing device 41 detects the distance between the battery replacing device 41 and the ground. The height of the battery pack holder is a known value. When the distance between the battery replacing device 41 and the ground reaches the preset distance, it indicates that the battery replacing device 41 reaches the first predetermined position.
In step S502, the battery replacement device 41 sends an unlock instruction to the control mechanism. In specific implementation, the external electromagnetic device on the battery replacing device 41 is powered on to generate a magnetic field, and the external electromagnetic device on the battery replacing device 41 is attracted to the first electromagnetic induction element 104, so that the transmission of the unlocking instruction is completed. The control mechanism controls the retraction pin 102 to retract to the unlocked position upon receiving an unlock command. In specific implementation, when the first electromagnetic induction element 104 is attracted to an external electromagnetic device disposed on the battery exchange apparatus 41, the power pin 103 moves away from the retractable pin 102, and applies an acting force to the retractable pin 102 in a retraction direction, so that the retractable pin 102 retracts, the retractable pin 102 presses the first elastic element 105, and after the power pin 103 and the retractable pin 102 are completely separated, the first elastic element 105 provides a restoring force to the retractable pin 102, so that the retractable pin 102 returns to a position for engaging with the power pin 103, and at this time, the retractable pin 102 is in an unlocked position.
In step S503, the position sensor detects whether the telescopic pin 102 is in the unlock position to determine whether the protection device 10 is unlocked in place. When the position sensor detects that the retractable pin 102 is in the unlocked position, it indicates that the protective device 10 is unlocked. The protective device 10 generates a first unlock signal after unlocking in place. Then, the battery exchange device 41 applies an external force to the lock link 2012 after receiving the first unlocking signal to rotate the lock bolt 2011 to unlock.
Next, in step S504, the battery replacing device 41 grips the battery pack and moves the battery pack away from the lock mechanism 20. In specific implementation, the battery replacing device 41 clamps the battery pack to be removed from the bottom of the electric vehicle. At this point, the unlocking process of the vehicle battery pack is completed.
The unlocking device can accurately control the unlocking action of the vehicle battery pack, improves the unlocking efficiency and precision of the battery pack, and reduces the battery replacement cost.
Example 2
Referring to fig. 11, the locking system of a vehicle battery pack according to the present embodiment includes a battery replacement device 41, a protection device 10 provided on a battery pack holder, and a locking mechanism 20. The locking mechanism 20 includes a locking linkage 201 and a lock base 202, the locking linkage 201 moves relative to the lock base 202 to switch between an unlocked state and a locked state, and the locking linkage 201 locks the battery pack in the locked state; the protector 10 is provided on a movement path of the lock interlocking portion 201 to restrict or release the restriction of the movement of the lock interlocking portion 201 with respect to the lock base 202. The protection device 10 and the lock mechanism 20 of the locking system according to the present embodiment refer to the protection device 10 and the lock mechanism 20 of the unlocking system of the vehicle battery pack according to embodiment 1, and their description is omitted here.
The battery replacing device 41 is used for unlocking the protection device 10 to release the restriction of the locking linkage part 201 after the battery pack is moved to the second predetermined position. The protection device 10 is used to generate a first command signal after unlocking into position. The battery replacing device 41 is further configured to drive the battery pack to enter the locking mechanism 20 and move the locking linkage portion 201 to the locked state after receiving the first instruction signal. The lock mechanism 20 is used to determine whether the lock linkage portion 201 is in the locked state, and if so, the lock mechanism 20 is also used to generate a first lock signal. The battery replacement device 41 is configured to lock the lock protection device 10 to restrict the movement of the lock linkage 201 with respect to the lock base 202 after receiving the first lock signal.
The specific process of locking the vehicle battery pack locking system according to the embodiment is as follows: first, the battery replacing device 41 moves from below the battery pack holder in the upward direction while holding the battery pack, and approaches the battery pack holder. The photoelectric sensor provided below the battery replacing device 41 detects the distance between the battery replacing device 41 and the ground. The height of the battery pack holder is a known value. When the distance between the battery replacing device 41 and the ground reaches the preset distance, it indicates that the battery replacing device 41 reaches the second predetermined position. The second predetermined position is a position at which the battery replacement device 41 can lock the battery pack.
Then, the battery changer 41 unlocks the protection device 10 to release the restriction of the locking interlocking part 201. In specific implementation, the external electromagnetic device on the battery replacing device 41 is powered on to generate a magnetic field, and the external electromagnetic device on the battery replacing device 41 is attracted to the first electromagnetic induction element 104, so that the transmission of the unlocking instruction is completed. The control mechanism controls the retraction pin 102 to retract to the unlocked position upon receiving an unlock command. In specific implementation, when the first electromagnetic induction element 104 is attracted to an external electromagnetic device disposed on the battery exchange apparatus 41, the power pin 103 moves away from the retractable pin 102, and applies an acting force to the retractable pin 102 in a retraction direction, so that the retractable pin 102 retracts, the retractable pin 102 presses the first elastic element 105, and after the power pin 103 and the retractable pin 102 are completely separated, the first elastic element 105 provides a restoring force to the retractable pin 102, so that the retractable pin 102 returns to a position for engaging with the power pin 103, and at this time, the retractable pin 102 is in an unlocked position.
Then, the position sensor detects whether the telescopic pin 102 is in the unlock position to determine whether the protection device 10 is unlocked in place. When the position sensor detects that the retractable pin 102 is in the unlocked position, it indicates that the protective device 10 is unlocked. Then, the battery replacing device 41 controls the lock linkage 201 to move relative to the lock base 202 to open the opening. Then, the battery replacing device 41 moves the battery pack so that the lock shaft of the battery pack enters the opening and moves to the locking point. The locking mechanism 20 further includes a position sensor that detects whether the lock shaft of the battery pack reaches the locking point of the locking mechanism 20 to determine whether the locking linkage 201 is in the locked state. As a preferred embodiment, the position sensor is a magnetic field sensor disposed in the cavity, and the lock shaft of the battery pack is correspondingly provided with magnetic steel. The magnetic field sensor is used for sensing a magnetic field generated by the magnetic steel of the battery pack locking shaft. When the lock shaft enters the cavity and reaches the locking point of the locking mechanism 20, the magnetic field sensor senses the magnetic steel on the lock shaft to generate a magnetic field, and then a locking starting signal is generated, wherein the locking starting signal represents that the lock shaft enters the cavity and reaches the locking point of the locking mechanism 20. Next, the battery replacing device 41 drives the locking linkage 201 to move according to the locking start signal to close the opening. The opening is closed, and the lock shaft of the battery pack is locked. The locking mechanism 20 further includes a position detecting device that detects whether the opening is opened or closed to determine whether the locking linkage 201 is in the locked state. If the opening is closed, the lock interlocking portion 201 is in a locked state. The locking mechanism 20 generates a first locking signal.
The battery exchange device 41 sends a lock instruction to the control mechanism upon receiving the first lock signal. In specific implementation, the external electromagnetic device disposed on the battery replacing apparatus 41 is separated from the first electromagnetic induction element 104, and the first electromagnetic induction element 104 does not induce the magnetic field of the external electromagnetic device any more, that is, the transmission of the locking command is completed.
Then, the control mechanism controls the telescopic pin 102 to move to the lock position. In specific implementation, when the first electromagnetic induction element 104 is separated from the external electromagnetic device disposed on the battery replacing device 41, the power pin 103 moves toward the direction close to the telescopic pin 102 to engage with the telescopic pin 102, so that the telescopic pin 102 is in the extended state, and the telescopic pin 102 is in the locking position. At this time, the protection device 10 is locked to restrict the movement of the lock linkage 201, thereby providing protection. At this point, the locking process of the vehicle battery pack is completed.
The present embodiment also provides a method for locking a vehicle battery pack, which is implemented by using the locking system of the vehicle battery pack of the present embodiment. Referring to fig. 12, the locking method includes the steps of:
step S601, the battery replacing device drives the battery pack to move to a second predetermined position. The second predetermined position is a position at which the battery replacement device 41 can lock the battery pack.
Step S602, the battery replacement device unlocks the protection device to release the restriction of the locking linkage portion.
Step S603, judging whether the protection device is unlocked in place; if so, the battery replacing device drives the battery pack to enter the locking mechanism and moves the locking linkage part to the locked state.
Step S604, judging whether the locking linkage part is in a locking state; if yes, the battery replacing device is locked by the locking protection device so as to limit the locking linkage part to move relative to the locking base.
In step S601, the battery exchange device 41 moves from below the battery pack holder in the upward direction while holding the battery pack, and approaches the battery pack holder. The photoelectric sensor provided below the battery replacing device 41 detects the distance between the battery replacing device 41 and the ground. The height of the battery pack holder is a known value. When the distance between the battery replacing device 41 and the ground reaches the preset distance, it indicates that the battery replacing device 41 reaches the second predetermined position. The second predetermined position is a position at which the battery replacement device 41 can lock the battery pack.
Then, in step S602, the battery exchange device 41 unlocks the protection device 10 to release the restriction of the lock interlocking part 201. In specific implementation, the external electromagnetic device on the battery replacing device 41 is powered on to generate a magnetic field, and the external electromagnetic device on the battery replacing device 41 is attracted to the first electromagnetic induction element 104, so that the transmission of the unlocking instruction is completed. The control mechanism controls the retraction pin 102 to retract to the unlocked position upon receiving an unlock command. In specific implementation, when the first electromagnetic induction element 104 is attracted to an external electromagnetic device disposed on the battery exchange apparatus 41, the power pin 103 moves away from the retractable pin 102, and applies an acting force to the retractable pin 102 in a retraction direction, so that the retractable pin 102 retracts, the retractable pin 102 presses the first elastic element 105, and after the power pin 103 and the retractable pin 102 are completely separated, the first elastic element 105 provides a restoring force to the retractable pin 102, so that the retractable pin 102 returns to a position for engaging with the power pin 103, and at this time, the retractable pin 102 is in an unlocked position.
Next, in step S603, the position sensor detects whether the telescopic pin 102 is in the unlock position to determine whether the protection device 10 is unlocked in place. When the position sensor detects that the retractable pin 102 is in the unlocked position, it indicates that the protective device 10 is unlocked. Then, the battery replacing device 41 controls the lock linkage 201 to move relative to the lock base 202 to open the opening. Then, the battery replacing device 41 moves the battery pack so that the lock shaft of the battery pack enters the opening and moves to the locking point. The locking mechanism 20 further includes a position sensor that detects whether the lock shaft of the battery pack reaches the locking point of the locking mechanism 20 to determine whether the locking linkage 201 is in the locked state. As a preferred embodiment, the position sensor is a magnetic field sensor disposed in the cavity, and the lock shaft of the battery pack is correspondingly provided with magnetic steel. The magnetic field sensor is used for sensing a magnetic field generated by the magnetic steel of the battery pack locking shaft. When the lock shaft enters the cavity and reaches the locking point of the locking mechanism 20, the magnetic field sensor senses the magnetic steel on the lock shaft to generate a magnetic field, and then a locking starting signal is generated, wherein the locking starting signal represents that the lock shaft enters the cavity and reaches the locking point of the locking mechanism 20. Next, the battery replacing device 41 drives the locking linkage 201 to move according to the locking start signal to close the opening. The opening is closed, and the lock shaft of the battery pack is locked.
In step S604, the position detection device of the lock mechanism 20 detects whether the opening is in the open or closed state to determine whether the lock linkage 201 is in the locked state. If the opening is closed, the lock interlocking portion 201 is in a locked state. The locking mechanism 20 generates a first locking signal. The battery exchange device 41 sends a lock instruction to the control mechanism upon receiving the first lock signal. In specific implementation, the external electromagnetic device disposed on the battery replacing apparatus 41 is separated from the first electromagnetic induction element 104, and the first electromagnetic induction element 104 does not induce the magnetic field of the external electromagnetic device any more, that is, the transmission of the locking command is completed. Then, the control mechanism controls the telescopic pin 102 to move to the lock position. In specific implementation, when the first electromagnetic induction element 104 is separated from the external electromagnetic device disposed on the battery replacing device 41, the power pin 103 moves toward the direction close to the telescopic pin 102 to engage with the telescopic pin 102, so that the telescopic pin 102 is in the extended state, and the telescopic pin 102 is in the locking position. At this time, the protection device 10 is locked, and the movement of the lock interlocking unit 201 with respect to the lock base 202 is restricted to protect it. At this point, the locking process of the vehicle battery pack is completed.
The locking device can accurately control the locking action of the vehicle battery pack, improves the locking efficiency and precision of the battery pack, and reduces the battery replacement cost.
In describing the present invention, an embodiment may be provided with multiple figures, and reference numerals for like parts of the same embodiment are not necessarily shown in each figure; it will be appreciated by those skilled in the art that while one or more figures in an embodiment are described, they may be understood in conjunction with other figures in the embodiment; it will be understood by those skilled in the art that when no specific reference is made to which figure the text specifically corresponds, the text can be understood in conjunction with all of the figures in the embodiment.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (17)
1. The unlocking method of the vehicle battery pack is characterized in that a protection device and a locking mechanism are arranged on a battery pack bracket of the vehicle; the locking mechanism comprises a locking linkage part and a lock base, the locking linkage part moves relative to the lock base to switch between an unlocking state and a locking state, and the locking linkage part locks the battery pack when in the locking state; the protection device is arranged on a moving path of the locking linkage part so as to limit or release the limitation of the movement of the locking linkage part relative to the lock base;
the unlocking method comprises the following steps:
the battery replacing device moves to a first preset position;
the battery replacing device unlocks the protection device to release the restriction on the locking linkage part;
judging whether the protection device is unlocked in place, if so, moving the locking linkage part to the unlocking state to unlock the locking mechanism;
the battery changing device moves the battery pack away from the locking mechanism.
2. The unlocking method of a vehicle battery pack according to claim 1, wherein the protection device includes a retractable pin that moves between a locked position and an unlocked position with respect to the lock linkage portion to restrict or release the restriction of the lock linkage portion, and a control mechanism for controlling the movement of the retractable pin, and the battery replacement device unlocks the protection device to release the restriction of the lock linkage portion includes the steps of:
the battery replacing device sends an unlocking instruction to the control mechanism after moving to the first preset position;
the control mechanism controls the telescopic pin to retract to the unlocking position.
3. The unlocking method of a vehicle battery pack according to claim 1, wherein the protection device further includes a position sensor for detecting whether the protection device is unlocked in place.
4. The unlocking method of a vehicle battery pack according to claim 1, wherein the latch linkage portion includes a latch and a lock link for rotating the latch under an external force to unlock or latch the battery pack; moving the locking linkage to the unlocked state to unlock the locking mechanism includes: the battery replacing device controls the lock connecting rod to drive the lock tongue to rotate so as to unlock the battery pack.
5. A locking method of a vehicle battery pack is characterized in that a protection device and a locking mechanism are arranged on a battery pack bracket of a vehicle; the locking mechanism comprises a locking linkage part and a lock base, the locking linkage part moves relative to the lock base to switch between an unlocking state and a locking state, and the locking linkage part locks the battery pack when in the locking state; the protection device is arranged on a moving path of the locking linkage part so as to limit or release the limitation of the movement of the locking linkage part relative to the lock base;
the locking method comprises the following steps:
the battery replacing device drives the battery pack to move to a second preset position;
the battery replacing device unlocks the protection device to release the restriction on the locking linkage part;
judging whether the protection device is unlocked in place or not, if so, driving a battery pack to enter a locking mechanism by the battery replacing device and moving the locking linkage part to the locking state;
and judging whether the locking linkage part is in a locking state, if so, locking the protection device by the battery replacing device so as to limit the locking linkage part to move relative to the lock base.
6. The method of claim 5, wherein the lock base is provided with an opening and a cavity extending from the opening, the opening is used for allowing a lock shaft mounted on the battery pack to enter the cavity, the lock linkage portion moves relative to the lock base to open or close the opening to switch between the unlocked state and the locked state, and the battery replacing device drives the battery pack into the locking mechanism and moves the lock linkage portion to the locked state includes:
the battery replacing device drives the locking linkage part to move so as to open the opening;
the battery replacing device drives the lock shaft of the battery pack to enter the opening and move to the locking point;
the battery replacing device drives the locking linkage part to move so as to close the opening.
7. The method of locking a vehicle battery pack according to claim 5, wherein the lock mechanism further includes a position sensor, and the determining whether the lock linkage unit is in the locked state includes: the position sensor detects whether a lock shaft of the battery pack reaches a lock point of the lock mechanism.
8. A locking method of a vehicle battery pack according to claim 5, wherein the protection device includes a retractable pin that moves between a locked position and an unlocked position with respect to the lock link, and a control mechanism that drives the retractable pin to move, and the battery replacement device locks the protection device to restrict movement of the lock link with respect to the lock base includes:
the battery replacing device sends a locking instruction to the control mechanism;
the control mechanism controls the telescopic pin to move to the locking position.
9. An unlocking system of a vehicle battery pack is characterized by comprising a battery replacing device, a protecting device arranged on a battery pack bracket and a locking mechanism; the locking mechanism comprises a locking linkage part and a lock base, the locking linkage part moves relative to the lock base to switch between an unlocking state and a locking state, and the locking linkage part locks the battery pack when in the locking state; the protection device is arranged on a moving path of the locking linkage part so as to limit or release the limitation of the movement of the locking linkage part relative to the lock base;
the battery replacing device is used for unlocking the protection device to remove the limitation on the locking linkage part after the battery replacing device moves to a first preset position, and the protection device is also used for generating a first unlocking signal after the battery replacing device is unlocked in place;
the battery replacing device is also used for moving the locking linkage part to the unlocking state according to the first unlocking signal so as to unlock the locking mechanism;
the battery replacing device is also used for moving the battery pack away from the locking mechanism after the locking mechanism is unlocked.
10. The unlocking system for a vehicle battery pack according to claim 9, wherein the protection device includes a telescopic pin that moves between a locked position and an unlocked position with respect to the lock linkage to restrict or release the restriction of the lock linkage, and a control mechanism for controlling the movement of the telescopic pin;
the battery replacing device is also used for sending an unlocking instruction to the control mechanism after moving to the first preset position;
the control mechanism is used for controlling the telescopic pin to retract to the unlocking position after receiving the unlocking instruction.
11. The unlocking system for a vehicle battery pack according to claim 9, wherein the protective device further includes a position sensor for detecting whether the protective device is unlocked in place.
12. The unlocking system for a vehicle battery pack according to claim 11, wherein the latching linkage portion includes a latch and a lock link for rotating the latch under an external force to unlock or latch the battery pack; the battery replacing device is also used for controlling the lock connecting rod to drive the lock tongue to rotate so as to unlock the battery pack.
13. A locking system of a vehicle battery pack is characterized by comprising a battery replacing device, a protecting device arranged on a battery pack bracket and a locking mechanism; the locking mechanism comprises a locking linkage part and a lock base, the locking linkage part moves relative to the lock base to switch between an unlocking state and a locking state, and the locking linkage part locks the battery pack when in the locking state; the protection device is arranged on a moving path of the locking linkage part so as to limit or release the limitation of the movement of the locking linkage part relative to the lock base;
the battery replacing device is used for unlocking the protection device to remove the limitation on the locking linkage part after driving the battery pack to move to a second preset position;
the protection device is used for generating a first instruction signal after unlocking in place;
the battery replacing device is also used for driving the battery pack to enter the locking mechanism and moving the locking linkage part to the locking state after receiving the first instruction signal;
the locking mechanism is used for judging whether the locking linkage part is in a locking state, and if so, the locking mechanism is also used for generating a first locking signal;
the battery replacing device is used for locking the protection device after receiving the first locking signal so as to limit the locking linkage part to move relative to the lock base.
14. A locking system for a vehicle battery pack according to claim 13, wherein the lock base is provided with an opening for allowing a lock shaft mounted to the battery pack to enter the cavity and a cavity extending from the opening, the lock linkage being movable relative to the lock base to open or close the opening to switch between the unlocked state and the locked state;
the battery replacing device is also used for driving the locking linkage part to move so as to open the opening;
the battery replacing device is also used for driving the lock shaft of the battery pack to enter the opening and move to the locking point; the battery replacing device is also used for driving the locking linkage part to move so as to close the opening.
15. A locking system of a vehicle battery pack according to claim 13, wherein the locking mechanism further includes a position sensor for detecting whether a lock shaft of the battery pack reaches a locking point of the locking mechanism.
16. A locking system of a vehicle battery pack according to claim 13, wherein the protector includes a telescopic pin that moves between a locked position and an unlocked position with respect to the lock link, and a control mechanism for driving the telescopic pin to move;
the battery replacing device is also used for sending a locking instruction to the control mechanism;
the control mechanism is used for controlling the telescopic pin to move to the locking position.
17. The locking system of a vehicle battery pack of claim 14, wherein a magnetic field sensor is disposed in the cavity and a magnetic steel is disposed on the lock shaft; the magnetic field sensor is used for sensing a magnetic field generated by the magnetic steel and generating a locking starting signal when the magnetic field is sensed, and the locking starting signal represents that the lock shaft enters the cavity;
the battery replacing device is also used for driving the locking linkage part to move according to the locking starting signal so as to close the opening.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910394652.0A CN111923713A (en) | 2019-05-13 | 2019-05-13 | Unlocking method and system and locking method and system of vehicle battery pack |
| KR1020217040533A KR20220007157A (en) | 2019-05-13 | 2020-05-13 | Unlocking method and system for vehicle battery pack, locking method and system |
| PCT/CN2020/089977 WO2020228731A1 (en) | 2019-05-13 | 2020-05-13 | Unlocking method and system, and locking method and system for vehicle battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910394652.0A CN111923713A (en) | 2019-05-13 | 2019-05-13 | Unlocking method and system and locking method and system of vehicle battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111923713A true CN111923713A (en) | 2020-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910394652.0A Pending CN111923713A (en) | 2019-05-13 | 2019-05-13 | Unlocking method and system and locking method and system of vehicle battery pack |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR20220007157A (en) |
| CN (1) | CN111923713A (en) |
| WO (1) | WO2020228731A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112382820A (en) * | 2020-11-12 | 2021-02-19 | 上海理工大学 | Active control battery protection device and control method thereof |
| CN112477681A (en) * | 2020-11-30 | 2021-03-12 | 浙江吉利控股集团有限公司 | Vehicle battery replacement control method, device, equipment and storage medium |
| CN113715687A (en) * | 2021-09-30 | 2021-11-30 | 北京胜能能源科技有限公司 | Vehicle battery state detection method and device, electronic equipment and vehicle |
| CN114312273A (en) * | 2020-09-30 | 2022-04-12 | 奥动新能源汽车科技有限公司 | Locking control method and system and unlocking control method and system of locking mechanism |
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| CN113320373B (en) * | 2021-06-30 | 2022-07-22 | 东风柳州汽车有限公司 | Fixing assembly, battery pack assembly and vehicle |
| CN114069146B (en) * | 2021-10-28 | 2024-04-09 | 中国第一汽车股份有限公司 | Harmonica-type liquid cooling plate fixing device, design method, battery and vehicle |
| CN115306227B (en) * | 2022-07-22 | 2023-10-20 | 东风柳州汽车有限公司 | Electromagnetic lock device |
| CN116798922B (en) * | 2023-08-22 | 2023-11-14 | 上海新创达半导体设备技术有限公司 | Automatic transportation system and control method thereof |
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Also Published As
| Publication number | Publication date |
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| WO2020228731A1 (en) | 2020-11-19 |
| KR20220007157A (en) | 2022-01-18 |
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