CN114919391A - Method for mounting and dismounting battery pack - Google Patents

Method for mounting and dismounting battery pack Download PDF

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Publication number
CN114919391A
CN114919391A CN202210482386.9A CN202210482386A CN114919391A CN 114919391 A CN114919391 A CN 114919391A CN 202210482386 A CN202210482386 A CN 202210482386A CN 114919391 A CN114919391 A CN 114919391A
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CN
China
Prior art keywords
battery pack
locking mechanism
bracket
locking
head
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Pending
Application number
CN202210482386.9A
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Chinese (zh)
Inventor
张建平
仇丹梁
兰志波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aulton New Energy Automotive Technology Co Ltd
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Aulton New Energy Automotive Technology Co Ltd
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Publication date
Application filed by Aulton New Energy Automotive Technology Co Ltd filed Critical Aulton New Energy Automotive Technology Co Ltd
Priority to CN202210482386.9A priority Critical patent/CN114919391A/en
Publication of CN114919391A publication Critical patent/CN114919391A/en
Pending legal-status Critical Current

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/80—Exchanging energy storage elements, e.g. removable batteries
    • 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
    • H01M50/249—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
    • 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
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Power Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Battery Mounting, Suspending (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Abstract

The invention discloses a mounting method and a dismounting method of a battery pack, which are used for dismounting the battery pack relative to a bracket, wherein the bracket is provided with a locking mechanism, and the mounting method of the battery pack comprises the following steps: the locking mechanism is driven to rotate so as to lock the battery pack on the bracket, or the locking mechanism is driven to rotate so as to unlock the battery pack on the bracket. In the battery pack mounting method and the battery pack dismounting method, the battery pack is locked or unlocked on the bracket by utilizing the rotation action of the locking mechanism on the bracket, and then the aim of fixing the battery pack on the bracket or dismounting the battery pack relative to the bracket is fulfilled.

Description

Method for mounting and dismounting battery pack
The present application is a divisional application of the chinese patent application entitled "method for mounting and dismounting battery pack" filed on 23/1/2020 and having an application number of 202010076987.0.
Technical Field
The invention relates to the field of battery replacement, in particular to a battery pack mounting method and a battery pack dismounting method.
Background
In the prior art, the battery pack is usually fixed on the bracket through a locking mechanism arranged on the bracket, a locking block on the locking mechanism realizes the locking of the battery pack in a horizontal displacement mode, the fixing firmness degree of the battery pack is poor, and the position of the battery pack is easily locked when the battery pack is not placed in place, so that the plugging of an electric connector between the battery pack and the bracket is not in place, and the normal use of a vehicle is influenced.
Disclosure of Invention
The invention provides a battery pack mounting method and a battery pack dismounting method, aiming at overcoming the defect that the fixing firmness degree of a locking mechanism for locking the position of a battery pack in the prior art is poor.
The invention solves the technical problems through the following technical scheme:
a method of mounting a battery pack for mounting the battery pack to a tray having a locking mechanism thereon, the method comprising the steps of:
the locking mechanism is driven to rotate so as to lock the battery pack on the bracket.
According to the installation method of the battery pack, the battery pack is locked on the bracket by utilizing the rotation action of the locking mechanism on the bracket, so that the purpose of fixing the battery pack on the bracket is achieved, and compared with the traditional locking mechanism, the installation method of the battery pack is simpler in locking process, firmer in fixing, high in reliability and the like.
Preferably, driving the locking mechanism to rotate to lock the battery pack to the bracket comprises the steps of:
s1, driving the locking mechanism to rotate towards a first direction, so that the locking mechanism enters a locking area of the battery pack located at a preset position of the bracket;
and S2, driving the locking mechanism to rotate towards a second direction, and locking the battery pack on the bracket, wherein the first direction is opposite to the second direction.
The locking mechanism can lock the battery pack relative to the bracket in a mode that the locking mechanism rotates in different directions.
Preferably, step S1 further includes: and controlling the battery replacing equipment to place the battery pack at a preset position of the bracket.
When the locking mechanism rotates towards the first direction, the battery pack is placed at the preset position of the bracket, so that the subsequent locking mechanism rotates towards the second direction, and the aim of locking the battery pack relative to the bracket is fulfilled.
Preferably, the installation method of the battery pack further comprises the following steps:
and S0, controlling the lifting bracket to lift the battery pack to the height of the installation position.
Preferably, step S2 further includes: when the locking mechanism is driven to rotate towards the second direction, the locking mechanism also drives the battery pack to move towards the direction close to the bracket, so that the battery pack is located at the locking position while the locking mechanism rotates to the position towards the second direction, and the battery pack is reliably locked on the bracket after the locking mechanism rotates towards the second direction.
Preferably, in step S2, the locking mechanism drives the battery pack to move toward the direction close to the bracket, so that the battery pack is inserted into the electrical connector of the bracket while the locking mechanism rotates to the second position.
The locking mechanism locks the battery pack and drives the battery pack to move towards the direction close to the bracket, so that the aim of plugging the electric connectors of the battery pack and the bracket is fulfilled by the locking mechanism. The function of the locking mechanism can be improved through the linkage mode, and the problem that the point connector in the prior art is difficult to insert is solved.
Preferably, in step S2, the locking mechanism applies a pulling force to the locking area of the battery pack to move the battery pack toward the bracket, so that the battery pack and the bracket are close to each other, and the battery-end electrical connector of the battery pack and the vehicle-end electrical connector of the bracket are connected by the locking mechanism.
Preferably, in step S1, the battery replacing apparatus controls a moving stroke of the battery pack in the bracket to place the battery pack at a preset position of the bracket, so that the locking mechanism can lock the battery pack on the bracket through rotation.
Preferably, in step S1, the battery replacement device places the battery pack at the predetermined position of the bracket by receiving an in-place signal of a sensor disposed at the predetermined position of the bracket, stops the operation of the mounting mechanism, and starts the operation of the locking mechanism to lock the battery pack on the bracket.
Preferably, the bracket is further provided with a position sensor, and the position sensor is used for detecting and controlling the rotation angle of the locking mechanism so as to stop rotating when the locking mechanism rotates to a specific position, thereby realizing the function of position locking.
Preferably, the bracket is further provided with a rotation limiting mechanism, and the rotation limiting mechanism is used for limiting the rotation angle of the locking mechanism, so that the battery pack is prevented from being damaged due to the fact that the locking mechanism is too large in rotation angle, and the battery pack shell is prevented from deforming.
A method of removing a battery pack from a tray having a locking mechanism thereon, the method comprising the steps of:
the locking mechanism is driven to rotate so as to unlock the battery pack on the bracket.
According to the battery pack disassembling method, the battery pack is unlocked on the bracket by utilizing the rotation action of the locking mechanism on the bracket, so that the purpose that the battery pack can be disassembled relative to the bracket is achieved, and compared with the traditional locking mechanism, the battery pack disassembling method is simpler in unlocking process, firmer in fixation, high in reliability and the like.
Preferably, driving the locking mechanism to rotate to unlock the battery pack on the bracket comprises the following steps:
s1, driving the locking mechanism to rotate towards a first direction, and unlocking the battery pack from the bracket;
and S2, driving the locking mechanism to rotate towards a second direction, so that the locking mechanism is separated from the locking area of the battery pack at the preset position of the bracket, wherein the first direction is opposite to the second direction.
The locking mechanism is rotated in different directions, so that the locking mechanism can unlock the battery pack relative to the bracket.
Preferably, step S2 further includes: and controlling the battery replacing equipment to take the battery pack out of the preset position of the bracket.
When the locking mechanism rotates towards the second direction, the battery pack is taken out from the preset position of the bracket, so that the interference between the locking mechanism and other parts of the battery pack is avoided in the process that the locking mechanism rotates towards the second direction.
Preferably, the method for disassembling the battery pack further comprises the following steps:
and S3, controlling the lifting bracket to lower the height of the battery pack from the disassembly position, and achieving the purpose of recycling the battery pack.
Preferably, step S1 further includes: when the locking mechanism is driven to rotate towards the first direction, the locking mechanism also drives the battery pack to move towards the direction far away from the bracket, so that the battery pack is located at the unlocking position while the locking mechanism rotates towards the first direction, and the battery pack can be reliably pushed to the unlocking position after the locking mechanism rotates towards the first direction, so that the follow-up step of taking out the battery pack relative to the bracket is conveniently carried out.
Preferably, in step S1, the locking mechanism drives the battery pack to move away from the bracket, so as to disengage the battery pack from the electrical connector of the bracket while the locking mechanism rotates to a position in the first direction.
The battery pack is driven to move in the direction away from the bracket by the locking mechanism when the battery pack is unlocked, so that the aim of separating the battery pack from the electric connector of the bracket is fulfilled by the locking mechanism. The function of the locking mechanism can be improved through the linkage mode, and the problem that the point connector is difficult to plug and pull in the prior art is solved.
Preferably, in step S1, the locking mechanism applies a pushing force to the locking area of the battery pack to move the battery pack away from the bracket, so as to separate the battery pack and the bracket from each other and complete the separation between the battery-end electrical connector of the battery pack and the vehicle-end electrical connector of the bracket.
Preferably, the bracket is further provided with an in-place sensor, and the in-place sensor is used for detecting and controlling the rotation angle of the locking mechanism so as to stop rotating when the locking mechanism rotates to a specific position, thereby realizing the in-place unlocking function.
Preferably, the bracket is further provided with a rotation limiting mechanism, and the rotation limiting mechanism is used for limiting the rotation angle of the locking mechanism, so that the battery pack is prevented from being damaged due to the fact that the locking mechanism is too large in rotation angle, and the battery pack shell is prevented from deforming.
The positive progress effects of the invention are as follows:
in the installation method and the disassembly method of the battery pack, the battery pack is locked or unlocked on the bracket by utilizing the rotation action of the locking mechanism on the bracket, and then the aim of fixing the battery pack on the bracket or disassembling the battery pack relative to the bracket is fulfilled.
Drawings
Fig. 1 is a schematic structural diagram of a battery pack fixing system according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a bracket according to an embodiment of the invention.
Fig. 3 is a partially enlarged view of a portion a in fig. 2.
Fig. 4 is a schematic structural diagram of a battery pack according to an embodiment of the invention.
Fig. 5 is a partially enlarged view of a portion B in fig. 4.
Fig. 6 is a flowchart illustrating a method for mounting a battery pack according to an embodiment of the invention.
Fig. 7 is a schematic diagram illustrating the movement of the locking mechanism in the method for mounting the battery pack according to the embodiment of the invention.
Fig. 8 is a flowchart illustrating a method for disassembling a battery pack according to an embodiment of the invention.
Fig. 9 is a schematic diagram illustrating the movement of the locking mechanism in the method for detaching the battery pack according to the embodiment of the present invention.
Fig. 10 is a schematic diagram illustrating the movement of the rotating insert of the battery pack fixing system according to an embodiment of the present invention.
Description of reference numerals:
closure mechanism 1
Rotary insert 11
Plug-in head 111, lock 111a, lock shaft 111b
A driving part 112, a link mechanism 112a, and a rotation fulcrum 112b
Stopper 12
A position-limiting part 121, a containing cavity 121a and an opening 121b
Battery pack 2
Bracket 3, battery support beam 31 and limiting device 32
An electric connector 4, a battery-end electric connector 41, a vehicle-end electric connector 42
Lifting machine 6, lifting plane 61
Lifting cushion block 7
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
As shown in fig. 1, the present invention provides a battery pack 2 fixing system, which includes a locking mechanism 1, wherein the locking mechanism 1 is disposed on a contact surface between a battery pack 2 and a bracket 3, specifically, the locking mechanism 1 includes a rotary insert 11 and a limiting member 12, the rotary insert 11 is disposed on the bracket 3, and the limiting member 12 is disposed on the battery pack 2, and when the battery pack 2 is mounted on the bracket 3, the rotary insert 11 is driven to rotate, so that the rotary insert 11 is limited or released by the limiting member 12 according to a difference in a rotation direction. The battery pack 2 securing system achieves the purpose of unlocking or locking the battery pack 2 to the tray 3 by the action of rotating the rotating insert 11 of the locking mechanism 1 in different directions. Compared with the traditional locking mechanism, the fixing system of the battery pack 2 has the advantages of more firm fixation, high reliability and the like. Meanwhile, the structure is simple, and the daily maintenance and management are convenient.
Specifically, in the present embodiment, the rotary insert 11 is disposed on the bracket 3, and the stopper 12 is disposed on the battery pack 2. However, in other embodiments, the rotary insert 11 may be provided on the battery pack 2, and the stopper 12 may be correspondingly provided on the bracket 3, so that the rotary insert 11 provided on the battery pack 2 is rotated to lock and unlock the position between the battery pack 2 and the bracket 3.
As shown in fig. 2, 3, 4 and 5, an electrical connector 4 is provided on a contact surface of the battery pack 2 with the bracket 3, and the electrical connector 4 specifically includes a battery-end electrical connector 41 provided on the contact surface of the battery pack 2 and a vehicle-end electrical connector 42 provided on the contact surface of the bracket 3. For the locking mechanism 1, the rotating plug-in 11 and the limiting member 12 are respectively disposed on the contact surface of the battery pack 2 and the contact surface of the bracket 3, that is, the locking mechanism 1 and the electrical connector 4 are disposed on the same contact surface, so that when the positions of the battery pack 2 and the bracket 3 are locked by the locking mechanism 1, the plugging state of the electrical connector 4 adjacent to the locking mechanism 1 is improved, and further, the electrical connection reliability of the battery pack 2 is improved.
As shown in fig. 7, when the battery-end electrical connector 41 is inserted into the vehicle-end electrical connector 42, the rotating plug-in component 11 rotates and is limited by the limiting component 12, so that the locking mechanism 1 locks the position between the battery pack 2 and the bracket 3 during the process of inserting the electrical connectors 4 into each other, thereby preventing the position between the battery pack 2 and the bracket 3 from being locked, which may result in the situation that the electrical connector 4 is not inserted in place. Further, when the battery-end electrical connector 41 is inserted relative to the vehicle-end electrical connector 42, the locking mechanism 1 can apply a pulling force to the limiting member 12 along the insertion direction of the electrical connector 4, so as to further tightly attach the battery pack 2 to the bracket 3 by the pulling force, thereby ensuring that the electrical connector 4 is inserted in place.
As shown in fig. 9, when the battery-end electrical connector 41 is pulled out from the vehicle-end electrical connector 42, the rotary insert 11 rotates and releases the position restriction with respect to the stopper 12, so that the battery pack 2 can be detached from the bracket 3. Further, when the battery-end electrical connector 41 is pulled out with respect to the vehicle-end electrical connector 42, the locking mechanism 1 can apply a pushing force to the limiting member 12 in the direction of pulling out the electrical connector 4, so as to assist the relative position separation between the battery pack 2 and the bracket 3 by the pushing force.
It should be specifically noted that, in the electrical connector 4 for the vehicle-mounted battery, the connection between the battery-end electrical connector 41 and the vehicle-end electrical connector 42 is usually tight, so when the battery pack 2 is mounted or dismounted, the battery pack 2 needs to be inserted into or pulled out of the bracket 3 by using an external power exchanging device, and during the process, the main resistance to be overcome is the insertion and extraction force on the electrical connector 4. The locking mechanism 1 can physically lock or unlock the battery pack 2 relative to the bracket 3 through rotation, and can apply corresponding pushing force or pulling force to the battery pack 2 through rotation to overcome the plugging force of the electric connector 4, so as to achieve the purpose of quickly disassembling and assembling the battery pack 2.
Meanwhile, the locking mechanism 1 is arranged on the contact surface of the battery pack 2 and the bracket 3, so that the acting force applied to the battery pack 2 by the locking mechanism 1 can be directly transmitted to the electric connector 4 on the contact surface, and the situation that the shell of the battery pack 2 is deformed due to overlarge or uneven stress when the battery pack 2 is plugged and pulled out of the traditional external battery replacement equipment is avoided.
The rotary insert 11 includes an insert head 111 and a driving part 112, the driving part 112 is connected to the insert head 111, and the driving part 112 is used for driving the insert head 111 to rotate.
The position-limiting member 12 has a receiving cavity 121a, and the plug-in head 111 of the rotary plug-in 11 enters or leaves the receiving cavity 121a in a rotary manner under the driving of the driving portion 112. When locking is required, the plug-in head 111 rotates clockwise to enter the accommodating cavity 121a, and then the plug-in head 111 abuts against the inner wall of the accommodating cavity 121a to realize physical limitation of the accommodating cavity 121a relative to the rotating plug-in 11.
Specifically, the plug-in unit head 111 includes two parts, i.e., a lock 111a and a lock rotating shaft 111b, the lock rotating shaft 111b is disposed on the bracket 3, the lock 111a is connected to the lock rotating shaft 111b, the lock 111a is a part of the plug-in unit head 111 directly entering the accommodating cavity 121a, the driving unit 112 is connected to the lock rotating shaft 111b, and the lock 111a is driven to turn up and down along the axis of the lock rotating shaft 111b, so as to achieve the purpose of linkage rotation.
As shown in fig. 3, the locking shaft 111b is coupled to a middle portion of the locking head 111a, and the locking head 111a includes a first insertion portion at an upper portion and a second insertion portion at a lower portion. As shown in fig. 7, the first insertion portion rotates in the battery pack direction to pass through the opening 121b and the receiving cavity 121a in the stopper 12. And then rotated again to rotate the first insertion portion in a direction away from the battery pack, so that the first insertion portion is limited by the limiting member 12, and similarly, the limiting member 12 includes a first insertion portion located at an end of the opening 121a and having a locking function for locking the locking head 111 a.
Meanwhile, the stopper 12 includes a stopper portion 121, and the stopper portion 121 has an opening 121b and the receiving cavity 121a, the opening 121b is disposed at a lower position of the receiving cavity 121a along a direction perpendicular to the insertion direction of the electrical connector 4, and the opening 121b is used for the insertion head 111 to enter and exit the receiving cavity 121a in an inverted manner. Further, when the insert head 111 is turned inside the housing cavity 121a, the insert head 111 can apply a pushing or pulling force to the wall surface of the housing cavity 121a to achieve a pushing or pulling action of the battery pack 2 within a specified forming range by the turning motion while locking and unlocking.
The present invention also provides a method of mounting the battery pack 2 on the bracket 3. As shown in fig. 6 and 7, which are schematic flow charts of the present embodiment, the locking mechanism 1 is driven to rotate, so that the rotating plug-in 11 moves relative to the limiting member 12 to lock the battery pack 2 on the bracket 3. Specifically, the locking process of the locking mechanism 1 includes two steps S11 and S12: first, in step S1, the battery pack 2 needs to be placed at a predetermined position of the bracket 3 by an external power switching device, which is actually 10cm away from the contact surfaces of the battery pack 2 and the bracket 3 in this embodiment, that is, the battery-end electrical connector 41 and the vehicle-end electrical connector 42 are close to but connected to each other. Meanwhile, the locking head 111a of the rotary insert 11 is driven to rotate in a counterclockwise direction (i.e., the first direction C) to avoid interference between the locking head 111a and the limiting portion 121 of the limiting member 12, and at the same time, the locking head 111a is rotated to the position of the opening 121b of the limiting portion 121.
Thereafter, in step S12, the tapered end 111a of the rotary insert 11 is driven to rotate in the clockwise direction (i.e., the second direction D), so that the tapered end 111a enters the accommodating chamber 121a from the opening 121b and finally abuts against the inner wall surface of the accommodating chamber 121 a. On the basis, by further rotating the locking head 111a, the locking head 111a applies a pushing force to the inner wall surface of the accommodating cavity 121a, so that the locking mechanism 1 applies a pulling force to the locking area of the battery pack 2 through the transmission of the force, the battery pack 2 is driven to move towards the direction close to the bracket 3, the contact surfaces of the battery pack 2 and the bracket are in contact, and the battery-end electrical connector 41 and the vehicle-end electrical connector 42 are connected. Or, in the process that the locking head 111a rotates in the clockwise direction (i.e., the second direction D), the battery pack can be pushed towards the bracket by an external force, so that the locking head 111a does not apply a force to the accommodating cavity 121a in the rotating process.
In addition, the method for installing the battery pack 2 on the bracket 3 may further include step S10, where in step S10, before the external battery replacement device pushes the battery pack 2 horizontally to the predetermined position of the bracket 3, the battery pack 2 is placed on the lifting bracket 3, and the lifting bracket 3 is controlled to lift the battery pack 2 to the height of the installation position.
In the present embodiment, the locking mechanism 1 acts on the locking area of the battery pack 2 to make the moving stroke match with the plugging stroke of the electrical connector 4, where the stroke match specifically refers to: when the locking mechanism 1 locks the battery pack 2 in place, the electrical connector 4 is plugged, so that before this, the battery pack 2 must be pushed horizontally by an external battery replacement device to a predetermined position of the bracket 3, so that the locking mechanism 1 can function
In order to enable the battery replacing device to accurately place the battery pack 2 at the preset position, a sensor is further arranged at the preset position of the bracket 3, and when the battery reaches the preset position, the sensor sends out an in-place signal to stop the battery replacing device and enable the locking mechanism 1 to start working.
Preferably, a position sensor (not shown) is further provided on the bracket 3 for detecting and controlling the rotation angle of the locking mechanism 1 to stop the rotation when the locking head 111a of the locking mechanism 1 rotates to a specific position, thereby achieving the position locking function. In addition, in order to avoid the failure of the in-place sensor or the excessive rotation angle of the lock 111a of the locking mechanism 1, a limiting mechanism for limiting the rotation should be disposed on the bracket 3, and the mechanism may be a stopper, so as to achieve the purpose of physical limiting, so that the rotation angle of the lock 111a of the rotation limiting mechanism is not too large, and the damage to the locking area of the battery pack 2 and the deformation of the casing of the battery pack 2 are avoided.
In addition, the invention also provides a method for disassembling the battery pack 2 relative to the bracket 3. The method is used for detaching the battery pack 2 mounted on the bracket 3 from the bracket 3. Fig. 8 and 9 are schematic diagrams illustrating a process of driving the locking mechanism 1 to rotate to move the rotating plug 11 relative to the limiting member 12 to unlock the battery pack 2 relative to the bracket 3 according to the present embodiment. Similar to the method for mounting the battery pack 2 on the bracket 3, in the unlocking method, the locking mechanism 1 applies a pushing force to the locking area of the battery pack 2 during unlocking, so as to synchronously achieve the purpose of separation between the battery-end electrical connector 41 and the vehicle-end electrical connector 42.
Specifically, the unlocking process of the lock mechanism 1 includes two steps S21 and S22: first, in step S21, the lock cylinder 111a of the lock mechanism 1 needs to be driven to rotate in the counterclockwise direction (the first direction C) to move the lock cylinder 111a toward the opening 121b, in which process the lock cylinder 111a abuts against the inner wall surface of the accommodation chamber 121 a. On the basis, by further rotating the locking head 111a, the locking head 111a applies a pushing force to the inner wall surface of the accommodating cavity 121a, so that the locking mechanism 1 applies a pushing force to the locking area of the battery pack 2 through the transmission of the force, the battery pack 2 is driven to move in a direction away from the bracket 3, and further, the contact surfaces of the battery pack 2 and the bracket are separated, and the battery end electrical connector 41 and the vehicle end electrical connector 42 are separated. Meanwhile, in the process that the locking head 111a pushes the battery pack 2 to move through rotation, after the battery pack 2 is displaced, the locking head 111a can leave the accommodating cavity 121a from the opening 121b, after the locking mechanism 1 leaves the accommodating cavity 121a, the pushing force applied to the locking area is stopped, and the locking mechanism 1 also enables the battery pack 2 to be unlocked relative to the bracket 3. Specifically, when the locking mechanism 1 stops pushing the battery pack 2 to stop the movement of the battery pack 2, the position of the battery pack 2 on the bracket 3 should be at a predetermined position. Or the battery pack 2 is pulled away from the bracket 3 by an external force during the counterclockwise rotation of the locking head 111a, i.e. the locking mechanism 1 does not apply a force to the battery pack 2 during the rotation.
Thereafter, in step S22, the lock mechanism 1 is driven to rotate clockwise (second direction D) so that the lock head 111a of the lock mechanism 1 is disengaged from the lock area of the battery pack 2 located at the preset position of the tray 3. Meanwhile, the external battery replacement device should take out the battery pack 2 from the predetermined position of the bracket 3. The purpose of disassembling the battery pack 2 is achieved.
Similarly to the above-mentioned method for mounting the battery pack 2, the method for dismounting the battery pack 2 may further include step S23, where the step S23 is to place the battery pack 2 on the lifting bracket 3 after the external power exchanging device takes out the battery pack 2 from the predetermined position of the bracket 3, and control the lifting bracket 3 to lower the height of the battery pack 2 from the mounting position, so as to achieve the purpose of recycling the battery pack 2.
In addition, the in-position sensor and the rotation limiting mechanism which function in the method of mounting the battery pack 2 can also function in the same manner in the method of dismounting the battery pack 2, and therefore, the description thereof is omitted.
In this embodiment, the locking mechanism 1 can pull the battery pack 2 to displace and perform the locking process after the battery pack 2 is placed at the predetermined position of the bracket 3 by an external battery replacement device. The battery replacement equipment is an existing product, and therefore specific structures and principles of the battery replacement equipment are not described in detail.
In addition, in the present embodiment, the single rotating plug 11 includes two locking heads 111a, the two locking heads 111a are respectively disposed at both ends of the locking head rotating shaft 111b, and correspondingly, the number of the limiting members 12 is the same as that of the locking heads 111a, and are disposed in one-to-one correspondence to improve the fixing firmness of the locking mechanism 1 by means of respective locking. Meanwhile, as shown in fig. 3, two sets of relatively independent locking mechanisms 1 are respectively disposed on the left and right sides of the bracket 3 to jointly fix the battery pack 2 and apply a force to the electrical connector 4 located between the two sets of locking mechanisms 1.
As shown in fig. 10, the driving portion 112 includes a link mechanism 112a, and the link mechanism 112a drives the lock head rotating shaft 111b to rotate through a lever movement, so as to turn over the lock head 111a, wherein, as for the specific principle of the link mechanism 112a, it belongs to the field of the prior art, and therefore, it is not described herein again. Here, since the rotary insert 11 in the present embodiment is provided on the bracket 3, the link mechanism 112a is provided at the lower surface position of the bracket 3, and the rotation fulcrum 112b of the link mechanism 112a is positioned at the battery support beam 31 in the lower half of the bracket 3 and below the battery pack 2.
A limiting device 32 is arranged on the surface of the battery support beam 31, and the limiting device 32 is used for limiting the lever movement of the link mechanism 112a so as to play a role when the lever movement of the link mechanism 112a needs to be stopped to realize the locking of the battery pack 2 by the locking mechanism 1. In this embodiment, the limiting device 32 is configured to achieve limiting by using a pin positioning manner, and when the link mechanism 112a drives the lock head 111a to move to a position where the battery pack 2 is locked on the bracket 3, the lever of the link mechanism 112a is locked at a specific position of the battery support beam 31 by using the positioning pin, so that the purpose of locking the lever of the link mechanism 112a is achieved by using the relatively simple manner.
The fixing system of the battery pack 2 further comprises a positioning pin plugging mechanism (not shown in the figure), which is used for plugging the positioning pin out of the link mechanism 112a and the battery support beam 31 to achieve the purpose of contact locking.
In addition, the present embodiment provides a simpler implementation manner as to how the link mechanism 112a of the locking mechanism 1 generates the lever motion to turn the locking head 111 a.
In this embodiment, the driving portion 112 further includes a lifting machine 6, the lifting machine 6 is disposed below the bracket 3, and during the process of upward pushing of the lifting machine 6, the lifting plane 61 pushes the lower surface of the link mechanism 112a along the vertical direction, so that the link mechanism 112a is turned over relative to the rotation fulcrum 112b thereof, and under the effect of the turning motion, the link mechanism 112a further drives the lock head 111a to rotate along the first direction C or the second direction D, thereby achieving the purposes of unlocking and locking.
In order to rotate the lock head 111a in the first direction C or the second direction D, if the link mechanism 112a is pushed to rotate by abutting against the lower surface of the link mechanism 112a, the lift 6 and the link mechanism 112a must be located on two sides of the rotation pivot 112b, respectively, in this case, the movable lifting pad 7 may be disposed on the lifting plane 61 of the lift 6, and the acting point of the lift 6 on the lower surface of the link mechanism 112a is changed by moving the lifting pad 7, so as to rotate the lock head 111a in the first direction C or the second direction D.
Of course, in other embodiments, the lifting machine 6 can also keep the same position connected to the link mechanism 112a, so as to drive the lock head 111a to rotate in the first direction C or the second direction D by applying a pushing force upwards or a pulling force downwards respectively. In addition, preferably, the positioning pin inserting and extracting mechanism may also be disposed on the lifting plane 61 of the lifting machine 6, so as to drive the positioning pin inserting and extracting mechanism to be close to the link mechanism 112a and the positioning pin while the lifting machine 6 is working.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is 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 (37)

1. A method of mounting a battery pack for mounting the battery pack to a tray having a locking mechanism thereon, the method comprising the steps of:
driving a locking mechanism to rotate so as to lock the battery pack on a bracket;
when the battery end electric connector is inserted relative to the vehicle end electric connector, the locking mechanism can apply pulling force to the limiting piece along the insertion direction of the electric connector, so that the electric connector is inserted in place.
2. The method of mounting a battery pack according to claim 1, wherein the locking mechanism is disposed on the same contact surface as the electrical connector, and when the battery-end electrical connector is inserted with respect to the vehicle-end electrical connector, the force applied to the battery pack by the locking mechanism is directly transmitted to the electrical connector.
3. The method of mounting a battery pack according to claim 2, wherein the electrical connector comprises the battery-end electrical connector provided on the contact surface of the battery pack and the cart-end electrical connector provided on the contact surface of the bracket, and the locking mechanism comprises a rotatable insert provided on the contact surface of the bracket and a retainer provided on the contact surface of the battery pack.
4. The method of claim 1, wherein the locking mechanism comprises a rotating plug and a stop member, and when the battery-end electrical connector is inserted relative to the vehicle-end electrical connector, the rotating plug rotates and is stopped by the stop member, so that the battery pack is locked with the bracket.
5. The method of mounting a battery pack according to claim 1, wherein the locking mechanism includes a rotatable plug-in unit and the retainer unit, the rotatable plug-in unit includes a plug-in unit head, the retainer unit includes an opening and a receiving cavity, the opening is disposed at a lower position of the receiving cavity along a direction perpendicular to the insertion direction of the electrical connector, the opening is used for allowing the plug-in unit head to enter and exit the receiving cavity by way of turning, and the plug-in unit head can apply a pulling force to a wall surface of the receiving cavity when the plug-in unit head is turned inside the receiving cavity.
6. The battery pack mounting method according to claim 1, wherein the locking mechanism includes a rotary insert and a stopper, the stopper has a receiving cavity, the rotary insert includes a driving portion and an insert head, the insert head includes a lock and a lock shaft, the lock is connected to the lock shaft, the driving portion drives the lock to turn up and down along an axis of the lock shaft by being connected to the lock shaft, and the lock enters the receiving cavity in a rotary manner.
7. The method of mounting a battery pack according to claim 6, wherein the locking head abuts against an inner wall of the accommodation chamber after the locking head enters the accommodation chamber.
8. The method of mounting a battery pack according to claim 6, wherein the locking head includes a first insertion portion at an upper portion and a second insertion portion at a lower portion, the locking head is pivotally connected to a middle portion of the locking head, and the first insertion portion is rotated in a direction of the battery pack to enter the receiving cavity of the stopper.
9. The battery pack mounting method according to claim 6, wherein the stopper further includes an opening provided at a lower position of the accommodating chamber, the opening is used for allowing the rotary insert to enter and exit the accommodating chamber by turning, and the lock head of the rotary insert is driven to rotate in the second direction, so that the lock head enters the accommodating chamber from the opening and abuts against an inner wall surface of the accommodating chamber.
10. The method of claim 6, wherein the driving part comprises a link mechanism that drives the rotation of the rotation shaft of the locking head by a lever motion.
11. The method of mounting a battery pack according to claim 1, wherein driving the locking mechanism to rotate to lock the battery pack to the bracket comprises the steps of:
s1, driving the locking mechanism to rotate towards a first direction, so that the locking mechanism enters a locking area of the battery pack located at a preset position of the bracket;
and S2, driving the locking mechanism to rotate towards a second direction, and locking the battery pack on the bracket, wherein the first direction is opposite to the second direction.
12. The battery pack mounting method according to claim 11, wherein the step S1 further includes: and controlling the battery replacing equipment to place the battery pack at a preset position of the bracket.
13. The battery pack mounting method according to claim 12, further comprising the steps of:
and S0, controlling the lifting bracket to lift the battery pack to the height of the installation position.
14. The battery pack mounting method according to claim 1, wherein the step S2 further includes: when the locking mechanism is driven to rotate towards the second direction, the locking mechanism also drives the battery pack to move towards the direction close to the bracket, so that the battery pack is located at the locking position while the locking mechanism rotates towards the second direction.
15. The method of claim 14, wherein in step S2, the locking mechanism moves the battery pack in a direction approaching the tray to engage the battery pack with the electrical connector of the tray while the locking mechanism is rotated to the second position.
16. The method of mounting a battery pack according to claim 14, wherein the locking mechanism moves the battery pack in a direction to approach the bracket by applying a pulling force to the locking region of the battery pack at step S2.
17. The battery pack mounting method according to claim 12, wherein the battery replacing apparatus places the battery pack at a preset position of the bracket by controlling a moving stroke of the battery pack in the bracket at step S1.
18. The battery pack mounting method according to claim 12, wherein in step S1, the battery replacement device places the battery pack at the preset position of the bracket by receiving an in-position signal of a sensor provided at the preset position of the bracket.
19. The method of mounting a battery pack according to claim 11, wherein the bracket further has a position sensor for detecting and controlling a rotation angle of the locking mechanism.
20. The method of mounting a battery pack according to claim 11, wherein the bracket further includes a rotation limiting mechanism for limiting a rotation angle of the locking mechanism.
21. A method of removing a battery pack from a tray having a locking mechanism thereon, the method comprising the steps of:
driving a locking mechanism to rotate so as to unlock the battery pack on a bracket;
when the battery end electric connector is pulled out relative to the vehicle end electric connector, the locking mechanism can apply thrust to the limiting piece along the pulling-out direction of the electric connector, so that the electric connector is separated.
22. The method of removing a battery pack of claim 21, wherein the locking mechanism is disposed on the same contact surface as the electrical connector, and when the battery-end electrical connector is pulled out relative to the vehicle-end electrical connector, the force applied by the locking mechanism to the battery pack is directly transmitted to the electrical connector.
23. The method of removing a battery pack of claim 22, wherein the electrical connectors include the battery end electrical connectors disposed on the contact surface of the battery pack and the vehicle end electrical connectors disposed on the contact surface of the bracket, and the locking mechanism includes a rotating insert disposed on the contact surface of the bracket and a retaining member disposed on the contact surface of the battery pack.
24. The method of removing a battery pack according to claim 21, wherein the locking mechanism includes a rotatable plug-in member and a stopper member, and when the battery-end electrical connector is inserted with respect to the vehicle-end electrical connector, the rotatable plug-in member rotates and releases the stopper member with respect to the stopper member, so that the battery pack is detached from the bracket.
25. The method of disassembling a battery pack according to claim 21, wherein the locking mechanism includes a rotary insert and the retainer, the rotary insert includes an insert head, the retainer includes an opening and a receiving cavity, the opening is disposed at a lower position of the receiving cavity along a direction perpendicular to an insertion direction of the electrical connector, the opening is used for allowing the insert head to enter and exit the receiving cavity by way of flipping, and the insert head can apply a pushing force to a wall surface of the receiving cavity when the insert head is flipped inside the receiving cavity.
26. The method of disassembling a battery pack according to claim 21, wherein the locking mechanism includes a rotation plug-in unit and a position-limiting unit, the position-limiting unit has a receiving cavity, the rotation plug-in unit includes a driving portion and a plug-in unit head portion, the plug-in unit head portion includes a lock head and a lock head rotation shaft, the lock head is connected to the lock head rotation shaft, the driving portion is connected to the lock head rotation shaft, and the driving portion drives the lock head to turn up and down along an axis of the lock head rotation shaft as a center to leave the receiving cavity in a rotation manner by being connected to the lock head rotation shaft.
27. The battery pack detachment method of claim 26, wherein the locking head includes a first insertion portion at an upper portion and a second insertion portion at a lower portion, and the locking head is pivotally coupled to a middle portion of the locking head.
28. The method of disassembling a battery pack according to claim 26, wherein the retaining member further includes an opening provided at a lower position of the receiving cavity, the opening being for allowing the rotary insert to enter and exit the receiving cavity by turning over.
29. The method of removing a battery pack of claim 26, wherein the driving part includes a link mechanism that drives the rotation of the locking cam shaft by a lever motion.
30. The method of removing a battery pack of claim 21, wherein driving the locking mechanism to rotate to unlock the battery pack from the cradle comprises the steps of:
s1, driving the locking mechanism to rotate towards a first direction, and unlocking the battery pack from the bracket;
and S2, driving the locking mechanism to rotate towards a second direction, so that the locking mechanism is separated from the locking area of the battery pack at the preset position of the bracket, wherein the first direction is opposite to the second direction.
31. The method for disassembling a battery pack according to claim 30, wherein the step S2 further comprises: and controlling the battery replacing equipment to take the battery pack out of the preset position of the bracket.
32. The method of disassembling a battery pack according to claim 31, wherein the method of disassembling a battery pack further comprises the steps of:
and S3, controlling the lifting bracket to lower the height of the battery pack from the disassembly position.
33. The method for disassembling a battery pack according to claim 30, wherein the step S1 further includes: when the locking mechanism is driven to rotate towards the first direction, the locking mechanism also drives the battery pack to move towards the direction away from the bracket, so that the battery pack is located at the unlocking position while the locking mechanism rotates towards the first direction.
34. The method for removing a battery pack according to claim 33, wherein in step S1, the locking mechanism moves the battery pack away from the bracket to disengage the battery pack from the electrical connector of the bracket while the locking mechanism is rotated into position in the first direction.
35. The method of removing a battery pack according to claim 33, wherein the locking mechanism moves the battery pack in a direction away from the bracket by applying a pushing force to the locking region of the battery pack in step S1.
36. The method of removing a battery pack according to claim 30, wherein the bracket further has a position sensor for detecting and controlling a rotation angle of the locking mechanism.
37. The method of removing a battery pack according to claim 30, wherein the bracket further includes a rotation limiting mechanism for limiting a rotation angle of the locking mechanism.
CN202210482386.9A 2020-01-23 2020-01-23 Method for mounting and dismounting battery pack Pending CN114919391A (en)

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CN113232499B (en) 2022-03-22
CN113232499A (en) 2021-08-10

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