CN112757956B - Quick-change mechanism of power battery - Google Patents
Quick-change mechanism of power battery Download PDFInfo
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- CN112757956B CN112757956B CN201911071082.8A CN201911071082A CN112757956B CN 112757956 B CN112757956 B CN 112757956B CN 201911071082 A CN201911071082 A CN 201911071082A CN 112757956 B CN112757956 B CN 112757956B
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- power battery
- mounting screw
- locking
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- 230000007246 mechanism Effects 0.000 title claims abstract description 56
- 238000009434 installation Methods 0.000 claims abstract description 26
- 230000008859 change Effects 0.000 claims description 10
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000306 component Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
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Classifications
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- 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
-
- 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
- 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
- B60K2001/0455—Removal or replacement of the energy storages
- B60K2001/0488—Removal or replacement of the energy storages with arrangements for pivoting
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- 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)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Battery Mounting, Suspending (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
The invention provides a quick-change mechanism of a power battery, which comprises a fixed seat on a vehicle body, the power battery, a jacking wheel disc, a locking device and an installation screw rod, wherein the fixed seat is arranged on the vehicle body; the mounting screw is provided with a first connecting section, a second connecting section and a third connecting section which are sequentially arranged; the locking device comprises a mounting seat fixed on the power battery and a clamp used for locking the power battery on a second connecting section of the mounting screw; the jacking wheel disc is sleeved on the first connecting section, and the power battery can be driven to move towards the fixing seat through relative rotation. The quick-change mechanism for the power battery, provided by the invention, has the advantages that the power battery is fixed on the mounting screw rod of the vehicle body, the mounting screw rod can realize the position fixation of the vehicle body and the power battery through the jacking wheel disc, and the power battery is fixed on the mounting screw rod through the locking device to finish the locking fixation of the power battery and the vehicle body.
Description
Technical Field
The invention relates to the technical field of power batteries in new energy automobiles, in particular to a quick-change mechanism of a power battery.
Background
New energy automobiles (including but not limited to pure electric automobiles, plug-in hybrid electric automobiles, extended range electric automobiles and the like) become a trend of automobile development under the influence of energy sources such as environment, petroleum and the like. A power battery, which is one of three-electric systems, is a core component of a new energy automobile. The power battery is particularly important in the cruising ability of the electric automobile and the safety and stability in the use process. However, the development of new energy automobiles is severely restricted by long charging time of the power battery, difficult charging and insufficient supply of the charging pile. Therefore, it is a need to be able to quickly replace the power cells. The quick-change efficiency is an important index of the quick-change mechanism of the power battery, and the use experience of the electric automobile is directly affected. The conventional quick-change mechanism has the defects of complicated operation, complex mechanism and poor reliability, so that the efficiency of the quick-change mechanism is lower and the power-change period is longer.
One of the existing quick-change mechanisms for the power battery adopts a spring type, and the power battery is locked by a hook through the pretightening force existing by the stress or tension of the spring. In the scheme, the rigid connection between the original power battery and the vehicle body is changed into elastic connection, and the spring is required to have enough force to support the starting power battery assembly, so that the whole elastic quick-change mechanism has large volume and heavy weight and is unfavorable for spatial arrangement.
Another power battery quick-change mechanism achieves an interlocking effect through inward expansion of a conical surface or a spherical surface, but in the structure, the inward expansion space is limited, and the manufacturing tolerance between a power battery and a vehicle body mounting point is required to be very accurate, so that the manufacturing cost and the manufacturing period are greatly increased.
Disclosure of Invention
The invention aims to solve the defects of complicated operation, complex mechanism, poor reliability, high manufacturing cost and long period of a quick-change mechanism in a power battery in the existing new energy automobile.
The technical scheme adopted for solving the technical problems is as follows: the quick-change mechanism of the power battery comprises a vehicle fixing seat, a jacking wheel disc, a locking device and a mounting screw rod, wherein the fixing seat is arranged on a vehicle body, and the mounting screw rod penetrates through the power battery and is fixed on the fixing seat;
the mounting screw is provided with a first connecting section which is rotationally connected with the jacking wheel disc, a second connecting section which can be fixedly connected with the locking device and a third connecting section which is fixedly connected with the fixing seat, wherein the first connecting section, the second connecting section and the third connecting section are sequentially arranged;
the locking device comprises a mounting seat fixed on the power battery and a clamp arranged on the mounting seat and used for locking the power battery on a second connecting section of the mounting screw;
the jacking wheel disc is sleeved on the first connecting section and is abutted to the power battery, and the jacking wheel disc drives the power battery to move towards the fixing seat through relative rotation of the jacking wheel disc and the mounting screw.
Further, the jacking wheel disc is provided with two opposite rotary inclined planes on the end face of one side far away from the power battery, and the first connecting section of the mounting screw is provided with a horizontal rotary rod which can be abutted with the rotary inclined planes and slide along with the setting direction of the rotary inclined planes.
Specifically, both of the two rotation slopes gradually increase in height in the clockwise direction.
Further, the clamp of the locking device comprises a fixed semi-ring, a movable semi-ring and a locking component, a through hole for the installation screw rod to pass through is formed between the fixed semi-ring and the movable semi-ring, one ends of the fixed semi-ring and the movable semi-ring are fixed on the installation seat through a first hinge shaft, and the other ends of the fixed semi-ring and the movable semi-ring are fixedly connected through the locking component.
Further, the locking assembly comprises a first connecting hole arranged at the end part of the fixed semi-ring, a second connecting hole arranged at the end part of the movable semi-ring, a connecting rod penetrating through the first connecting hole and the second connecting hole, and a first locking piece and a second locking piece which are respectively positioned at two ends of the connecting rod.
Specifically, the first locking piece and the second locking piece are locking nuts which are arranged at two ends of the connecting rod and respectively abutted with the end part of the movable half ring or the end part of the fixed half ring.
Specifically, the first locking piece is a locking nut which is arranged at the end part of the connecting rod and is abutted to the end part of the fixed semi-ring, the second locking piece is a wrench with an eccentric cam which is arranged at the other end of the connecting rod and is hinged to the connecting rod, and the end part of the movable semi-ring is provided with an arc surface which is abutted to the wrench.
Further, the inner walls of the fixed semi-ring and the movable semi-ring are respectively provided with a first connecting thread, and the second connecting section of the mounting screw is provided with a second connecting thread meshed with the first connecting thread.
Further, the mounting seat on the locking device comprises a mounting flat plate for fixing the clamp, and a connecting piece which is arranged on the mounting flat plate and fixedly connected with the power battery.
Further, a threaded hole fixedly connected with the mounting screw is formed in the fixing base, external threads meshed with the threaded hole are formed in a third connecting section of the mounting screw, and the mounting screw is fixed to the fixing base through the third connecting section.
The quick-change mechanism of the power battery has the beneficial effects that: the power battery is fixed on the mounting screw rod of the vehicle body, the mounting screw rod can realize the position fixation of the vehicle body and the power battery through the jacking wheel disc, the power battery is fixed on the mounting screw rod through the locking device, the locking fixation of the power battery and the vehicle body is completed, when the power battery is required to be disassembled, the mounting screw rod can be taken down from the power battery only by loosening the locking device, the disassembly and replacement period of the whole power battery can be controlled within three minutes, the original vehicle body is not changed, the quick change mechanism can be realized only by adding a mounting point on the power battery, and therefore, the quick change mechanism has the advantages of low cost, light weight, less original design, more production resources of the quick change mechanism and high reliability.
Drawings
Fig. 1 is a schematic perspective view of a quick-change mechanism of a power battery according to the present invention;
FIG. 2 is a full sectional view of the power cell in a second mounting position in the quick change mechanism of the power cell provided by the invention;
FIG. 3 is a full cross-sectional view of a power cell in a first mounting position in a quick-change mechanism for a power cell according to the present invention;
fig. 4 is a schematic perspective view of a locking device in a quick-change mechanism of a power battery according to the present invention;
fig. 5 is a top view of a locking device in a locked state in a quick-change mechanism of a power battery according to the present invention;
fig. 6 is a schematic perspective view of a mounting screw in a quick-change mechanism of a power battery according to the present invention;
FIG. 7 is a side view of a mounting screw in a quick change mechanism for a power cell provided by the present invention;
fig. 8 is a top view of a jacking wheel disc in the quick-change mechanism of the power battery provided by the invention;
fig. 9 is a cross-sectional view at A-A in fig. 8.
In the figure: 100-quick-change mechanism, 10-mounting screw, 11-first connecting section, 111-horizontal rotary rod, 112-guiding inclined plane, 12-second connecting section, 121-second connecting thread, 13-third connecting section, 131-external thread, 20-lifting wheel disc, 21-rotary inclined plane, 22-straight through hole, 23-round through hole, 24-mounting plane, 30-locking device, 31-mounting seat, 311-mounting plate, 312-connecting piece, 32-clamp, 321-stationary half ring, 322-movable half ring, 323-locking component, 3231-connecting rod, 3232-first locking piece, 3233-second locking piece (wrench, eccentric cam), 3234-cambered surface, 324-through hole, 325-first hinge shaft, 326-first connecting thread, 200-car body, 210-fixed seat, 211-threaded hole, 300-power battery, 301-first mounting position, 302-second mounting position.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1-9, the quick-change mechanism 100 of a power battery provided by the invention can be used in various new energy automobiles to provide reliable tight connection between the new energy automobile and the power battery 300, and the quick-change mechanism 100 can control the time for replacing the power battery 300 within 3 minutes through the mutual cooperation of various structures, and maintain the disassembly life of a single-unit mechanism to be more than thirty-thousand times. Therefore, the quick-change structure 100 of the power battery provided by the invention can solve the problems of long charging time and long battery-changing period of the existing electric automobile, and has great practical significance.
Specifically, as shown in fig. 1 and 2, in the quick-change mechanism 100 for a power battery provided by the present invention, a first mounting position 301 and a second mounting position 302 are provided between the power battery 300 and a fixing base 210 on a vehicle body 200, and the fixing base 210 on the vehicle body 200 is a fixing member welded on a lower vehicle body plane of the vehicle body. In the second installation position 302, a certain gap is formed between the vehicle body 200 and the power battery 300, and the power battery 300 can be quickly attached to the vehicle body 200 through the quick-change mechanism 100, so that the vehicle body 200 and the power battery 300 are positioned at the first installation position 301, and the power battery 300 is ensured to be installed in place.
Specifically, as shown in fig. 2 and 3, the quick-change mechanism 100 includes a fixing base 210 on a vehicle body 200, a jacking wheel disc 20, a locking device 30, and a mounting screw 10 fixed to the fixing base 210 through a power battery 300.
The mounting screw 10 is used for fixedly connecting the vehicle body 200 with the power battery 300. As shown in fig. 6 and 7, a schematic perspective view of a mounting screw 10 provided in a quick-change mechanism 100 for a power battery according to the present invention is shown. In the quick-change mechanism 100 provided by the invention, the mounting screw 10 is a specially designed special screw. The special screw rod not only can be used for tightly connecting the vehicle body 200 and the power battery 300, but also can be matched with the jacking wheel disc 20 to realize that the power battery 300 moves to the first installation position 301 from the second installation position 302, so that quick locking is realized. Specifically, the mounting screw 10 has a first connecting section 11 rotatably connected to the jacking wheel disc 20, a second connecting section 12 fixedly connected to the locking device 30, and a third connecting section 13 fixedly connected to the fixing base 210, which are sequentially provided. The fixing base 210 of the vehicle body 200 is provided with a screw hole 211, and the vehicle body 200 of a general new energy automobile is provided with screw holes 211 required for fixedly connecting with the power battery 300, and the screw holes 211 are internal screw threads of the M10. Correspondingly, the third connecting section 13 on the mounting screw 10 is provided with external threads 131 correspondingly meshed with the threaded hole 211, and the length of the external threads on the third connecting section 13 is 20mm. The mounting screw 10 is fixed to the fixing base 210 through the third connecting section 13. After passing through the housing of the power battery 300, the mounting screw 10 remains permanently connected to the vehicle body 200 via the third connecting section 13 until the power battery 300 is removed. A transition slope is provided between the third connecting section 13 and the second connecting section 12, so that it is ensured that the mounting screw 10 does not interfere with the vehicle body 200 when the power battery 300 is attached to the vehicle body 200. The mounting screw 10 is further provided with a rotation shaft between the second connection section 12 and the first connection section 11, so that both the second connection section 12 and the third connection section 13 can rotate with the first connection section 11.
As shown in fig. 4 and 5, the locking device 30 includes a mounting seat 31 fixed to the power battery 300 and a clip 32 provided on the mounting seat 31 for locking the power battery 300 to the second connection section 12 of the mounting screw 10. The clip 32 is used to provide a secure connection to the mounting screw 10 when a secure lock is required. The mounting block 31 is used to secure the clip 32 to the housing of the power cell 300. The locking device 30 can realize the fixed connection of the power battery 300 and the mounting screw 10.
As shown in fig. 8 and 9, a top view and a cross-sectional view of a lifting wheel disc 20 in a quick-change mechanism 100 of a power battery according to the present invention are shown. The jacking wheel disc 20 is a tool component matched with an external tool, and the jacking wheel disc 20 is sleeved on the first connecting section 11 of the mounting screw 10 and is abutted against the power battery 300, so that the power battery 300 can be driven to move towards the fixing seat 210 through relative rotation with the mounting screw 10. During the installation of the power battery 300, the jacking wheel disc 20 pushes the power battery 300 to move towards the fixing seat 210 by rotating until the power battery 300 is closely attached to the vehicle body 200. After the power battery 300 is tightly attached to the vehicle body 200, the mounting screw 10 is fixed to the power battery 300 by the locking device 30.
As shown in fig. 2, the mounting screw 10 is shown in a full-section schematic view when the power battery 300 is at the second mounting position 302 in a state that the mounting screw passes through the housing of the power battery 300 and is fixedly connected with the fixing base 210 on the vehicle body 200. At this time, the mounting screw 10 passes through the power battery 300 to be fixedly connected with the fixing base 210 of the vehicle body 200. A screw hole 211 is provided in the fixing base 210 of the vehicle body 200, and the vehicle body 200 is fixedly connected to the mounting screw 10 in the quick change mechanism 100 through the screw hole 211. In this state, the mounting screw 10 passes through the housing of the power battery 300, but is not fixedly connected to the power battery 300. At this time, the mounting screw 10 may be driven by the rotation of the lifting wheel 20 to drive the power battery 300 to move from the second mounting position 302 to the first mounting position 301. When the power battery 300 is mounted and fixed on the vehicle body 200, the jacking wheel disc 20 plays a role in pushing the mounting screw 10, so that the mounting screw 10 can push the fixed seat 210 of the vehicle body 200 and the power battery 300 to move relatively along with the rotation of the jacking wheel disc 20. As shown in fig. 2, the jacking wheel disc 20 and the fixing seat 210 are respectively located at two sides of the power battery 300, and under the condition that the vehicle body 200 connected with the mounting screw 10 is kept still, along with the rotation of the jacking wheel disc 20, the jacking wheel disc 20 receives the upward pushing force of the mounting screw 10 and transmits the upward pushing force to the power battery 300, so that the power battery 300 is promoted to move upwards to the first mounting position 301, the tight connection between the power battery 300 and the vehicle body 200 is realized, and the installation in place between the power battery 300 and the vehicle body 20 is ensured.
As shown in fig. 3, in the quick-change mechanism 100 for a power battery according to the present invention, the power battery 300 is moved to the first installation position 301 in a full-section schematic view. As shown in fig. 3, when the power battery 300 moves to the first installation position 301, the locking device 30 locks the installation screw 10 on the power battery 300, so as to realize the fixed connection between the installation screw 10 and the power battery 300, and ensure the locking of the housing of the power battery 300.
According to the quick-change mechanism 100 for the power battery, provided by the invention, through the mutual matching among the mounting screw 10, the jacking wheel disc 20 and the locking device 30, the power battery 300 and the vehicle body 200 can be mounted in place through the mounting screw 10 in the rotating process of the jacking wheel disc 20, and the locking device 30 can lock the mounting screw 10 on the outer side of the shell of the power battery 300 after the mounting is finished, so that relative displacement can not be generated between the mounting screw 10 and the power battery 300 as well as between the mounting screw 10 and the vehicle body 200, and the purpose of locking the power battery 300 is achieved.
Further, as shown in fig. 8 and 9, a top view and a cross-sectional view of a lifting wheel disc 20 in a quick-change mechanism 100 of a power battery according to the present invention are shown. The lifting wheel 20 is provided with two oppositely disposed rotary inclined surfaces 21 on the end surface of the side remote from the power battery 300. As shown in fig. 6 and 7, the first connecting section 11 of the mounting screw 10 is provided with a horizontal rotating rod 111 which can be abutted against the rotating inclined surface 21 of the jacking wheel disc 20 and slide along the arrangement direction of the rotating inclined surface, and a T-shaped structure is formed between the horizontal rotating rod 111 and the rotating shaft, so that the T-shaped structure can be inserted into the jacking wheel disc 20, and the pushing force is generated along with the rotation of the jacking wheel disc 20. The horizontal rotary rod 111 has a width of 8mm and a thickness of 6mm, and a guide slope 112 is provided at a side of the horizontal rotary rod 111 so that the horizontal rotary rod 111 can slide on its rotary slope 21 with the rotation of the jacking sheave 20 better. A linear through hole 22 is provided in the middle of the jacking wheel disc 20, the linear through hole 22 is penetrated by a horizontal rotating rod 111 of the installation screw 10 and is abutted against the rotating inclined surface 21, and the horizontal rotating rod 111 can slide along with the setting direction of the rotating inclined surface 21. And, a circular through hole 23 is further provided at the center of the in-line through hole 22, and the circular through hole 23 facilitates the insertion of the rotation shaft of the first connection section 11 when the jacking wheel disc 20 rotates. The side of the jacking wheel disc 20 is also provided with a mounting plane 24, the jacking wheel disc 20 can be conveniently driven to rotate through the mounting plane 24, and under the condition that the mounting screw rod 10 is fixedly connected with the vehicle body 200, the rotating inclined plane 21 on the jacking wheel disc 20 is abutted with the horizontal rotating rod 111 to generate upward pushing force, and the pushing force is conducted onto the power battery 300 along with the contact between the jacking wheel disc 20 and the power battery 300 shell, so that the power battery 300 is pushed to move from the second mounting position 302 to the first mounting position 301, namely, the power battery 300 can be pushed to move towards the vehicle body 200 through rotating the jacking wheel disc 20.
Specifically, as shown in fig. 9, in the quick-change mechanism 100 for a power battery provided by the present invention, the two rotating inclined planes 21 on the jacking wheel disc 20 are gradually increased in height along the clockwise direction. The difference in height between the two ends of the two rotation slopes 21 is equal to or greater than the distance between the second mounting position 302 to the first mounting position 301. Wherein the height of one side of the rotating inclined surface 21 is H1, the height of the other side is H2, and the height difference of the two sides determines the distance that the jacking wheel disc 20 can push the power battery 300 to move towards the vehicle body 200. If the height difference between the two sides is equal to the distance H3 between the second mounting position 302 and the first mounting position 301, the lifting wheel 20 rotates half a turn, so that the power battery 300 can be pushed from the second mounting position 302 to the first mounting position 301. At this time, the horizontal rotary rod 111 of the mounting screw 10 rotates 180 ° along with the rotary inclined surface 21 of the jacking wheel disc 20. If the height difference between the two sides is greater than the distance H3 between the second mounting position 302 and the first mounting position 301, the power battery 300 can be pushed to the first mounting position 301 from the second mounting position 302 when the rotation angle of the jacking wheel disc 20 is smaller than 180 degrees, so as to complete the close fitting between the power battery 300 and the vehicle body 200. In this embodiment, the height difference between the height H1 of one side and the height H2 of the other side of the rotating inclined surface 21 is 3mm, and the distance H3 between the second mounting position 302 and the first mounting position 301 is 2mm, so that the power battery 300 can be fixed on the vehicle body 200 when the required angle of the jacking wheel disc 20 is smaller than 180 °, and the power battery 300 and the new energy automobile can be mounted and fixed.
Further, after the jacking wheel disc 20 pushes the power battery 300 from the second installation position 302 to the first installation position 301, the locking device 30 in the quick-change mechanism 100 is used to achieve the fixed connection between the installation screw 10 and the power battery 300. As shown in fig. 4, the mounting base 31 includes a mounting plate 311 for fixing the clip 32 and a connector 312 provided on the mounting plate 311 to be fixedly connected to the power battery 300. The mounting plate 311 is fixed to the outside of the housing of the power cell 300, and is fixedly connected to the housing by a connecting member 312. In this embodiment, the connector 312 is a mounting nut. The fixed connection between the locking device 30 and the power battery 300 can be realized only by additionally arranging two threaded holes for fixing the mounting nuts on the shell of the power battery 300, so that the connection between the power battery 300 and the locking device 30 is simple and reliable.
Specifically, as shown in fig. 4, the clamp 32 of the locking device 30 includes a fixed half ring 321, a movable half ring 322, and a locking assembly 323, a through hole 324 for the installation screw 10 to pass through is provided between the fixed half ring 321 and the movable half ring 322, one ends of the fixed half ring 321 and the movable half ring 322 are fixed on the mounting seat 31 through a first hinge shaft 325, and the other ends of the fixed half ring 321 and the movable half ring 322 are fixedly connected through the locking assembly 323. When the power battery 300 is not moved to the first mounting position 301, the locking assembly 323 of the locking device 30 is in an opened state, and the retainer half ring 321 of the clamp 32 is fixed to the mounting plate 311 of the mounting seat 31. The movable half ring 322 is hinged to the stationary half ring 321 by a first hinge shaft 325, so that a through hole 324 formed between the stationary half ring 321 and the movable half ring 322 can be adjusted.
In this embodiment, the inner walls of the stationary half ring 321 and the movable half ring 322 of the locking device 30 are provided with first connecting threads 326, and the second connecting section 12 of the mounting screw 10 is provided with second connecting threads 121 engaged with the first connecting threads 326. The outer side of the second connecting section 12 of the mounting screw 10 is provided with 25mm rollers which are threads with a thread height of 0.5mm, a thread depth of 0.5mm and a thread pitch of 1 mm.
Specifically, as shown in fig. 5, the locking assembly 323 in the locking device 30 includes a first coupling hole (not shown) provided at an end of the stationary half ring 321, a second coupling hole (not shown) provided at an end of the movable half ring 322, a link 3231 passing through the first coupling hole and the second coupling hole, and a first locking member 3232 and a second locking member 3233 respectively positioned at both ends of the link 3231. The first locking member 3232 is fixed at one end of the connecting rod 3231, and the second locking member 3233 at the other end is adjusted to achieve locking and fixing between the stationary half ring 321 and the movable half ring 322. After the force battery 300 moves to the first installation position 301, the whole locking device 30 can be fixed on the outer side of the installation screw 10 by adjusting the second locking member 3233 on the locking assembly 323, so as to realize the fixed connection between the locking device 30 and the installation screw 10.
Specifically, as shown in fig. 5, in the present embodiment, the first locking member 3232 is a locking nut 3232 that is disposed at an end of the connecting rod 3231 and abuts against an end of the stationary half ring 321, the second locking member 3233 is disposed at the other end of the connecting rod 3231 and is hinged to the connecting rod 3231, the second locking member 3233 is a wrench having an eccentric cam, and an end of the movable half ring 322 is provided with an arc surface 3234 that abuts against the eccentric cam. The rotation means can be opened or closed by rotating the second locking member 3233. In the opened state of the locking device 30, the diameter of the through hole 324 formed between the stationary half ring 321 and the movable half ring 322 is 20+2mm, and the second locking member 3233 is in the opened state. In the locked state of the locking device 30, the second locking member 3233 is correspondingly in the locked state, and the diameter of the through hole 324 formed between the stationary half ring 321 and the movable half ring 322 is 20mm. At this time, the first coupling screw 326 on the inner wall of the locking device 30 is engaged with the second coupling screw 121 on the mounting screw 10, thereby locking the mounting screw 10 to the locking device 30.
In the quick-change mechanism 100 for a power battery provided by the present invention, the first locking member 3232 and the second locking member 3233 in the locking assembly 323 of the locking device 30 may also be locking nuts (not shown in the drawings) disposed at two ends of the connecting rod 3231 and respectively abutting against the end of the movable half ring 322 or the end of the stationary half ring 321. After the power battery 300 moves to the first installation position 301, the locking device 30 and the installation screw 10 can be fixedly connected by locking the nut on the second locking member 3233.
In the quick-change mechanism 100 for a power battery provided by the invention, the mounting screw 10 is fixed on the fixing seat 210 of the automobile body 200 through the external thread 131 on the third connecting section 13. When the power battery 300 is transported to the underbody, the mounting screw 10 passes through the locking device 30 fixed to the power battery 300 in an unlocked state, so that the power battery 300 and the vehicle body 200 are positioned at the second mounting position 302 as shown in fig. 2. At this time, the jacking wheel disc 20 is driven to be inserted into the first connecting section 11 of the mounting screw 10 by using a special tool, and the jacking wheel disc 20 is driven to rotate relative to the mounting screw 10, and during the rotation of the jacking wheel disc 20, the rotating inclined surface 21 on the jacking wheel disc 20 abuts against the horizontal rotating rod 111 on the mounting screw 10 to generate an upward pushing force, and the pushing force urges the power battery 300 to move to the first mounting position 301 of the vehicle body 200. The torque value is set on the special tool, when the special tool drives the jacking wheel disc 20 to reach the torque value, the jacking wheel disc 20 stops rotating, and at the moment, a spanner on the locking device 30 is pushed to fix the locking device 30 on the outer side of the mounting screw 10, so that the first connecting screw thread 326 on the locking device 30 is meshed with the second connecting screw thread 121 on the mounting screw 10, and locking of the locking device 30 and the mounting screw 10 is ensured. And then the jacking wheel disc 20 is taken out from the bottom of the installation screw 10, so that the fixed connection of the power battery 300 and the new energy power automobile body 200 is completed. When the power battery 300 needs to be disassembled, the wrench at the locking device 30 is opened, so that unlocking between the power battery 300 and the mounting screw 10 can be realized, and then the mounting screw 10 is taken out from the power battery 300, so that the power battery 300 can be disassembled. The whole power battery 300 can be disassembled and replaced within three minutes, and the disassembly and replacement life of a single-group mechanism is more than hundred thousand times.
The quick-change mechanism 100 of the power battery 300 provided by the invention comprises the mounting screw rod 10 for fixing the power battery 300 on the vehicle body 200, the mounting screw rod 10 can realize the position fixing of the vehicle body 200 and the power battery 300 through jacking the wheel disc 20, and then the power battery 300 is locked on the mounting screw rod 10 through the locking device 30, so that the locking and fixing of the power battery 300 and the vehicle body 200 are completed. When the power battery 300 is required to be disassembled, the mounting screw 10 can be removed from the power battery 300 only by loosening the locking device 30, the disassembly and replacement period of the whole power battery 300 can be controlled within three minutes, the original vehicle body 200 is not changed, and the quick-change mechanism can be realized only by additionally arranging mounting points on the power battery 300, so that the quick-change mechanism is low in cost and light in weight, less in original design, more in production resources of the quick-change mechanism 100 and high in reliability.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (6)
1. The quick-change mechanism of the power battery is characterized by comprising a fixed seat, a jacking wheel disc, a locking device and a mounting screw rod, wherein the fixed seat is arranged on a vehicle body, and the mounting screw rod penetrates through the power battery to be fixed on the fixed seat;
the mounting screw is provided with a first connecting section which is rotationally connected with the jacking wheel disc, a second connecting section which can be fixedly connected with the locking device and a third connecting section which is fixedly connected with the fixing seat, wherein the first connecting section, the second connecting section and the third connecting section are sequentially arranged;
the locking device comprises a mounting seat fixed on the power battery and a clamp arranged on the mounting seat and used for locking the power battery on a second connecting section of the mounting screw;
the jacking wheel disc is sleeved on the first connecting section and is abutted to the power battery, and the jacking wheel disc drives the power battery to move towards the fixing seat through relative rotation of the jacking wheel disc and the mounting screw;
the clamp of the locking device comprises a fixed half ring, a movable half ring and a locking assembly, a through hole for the installation screw rod to pass through is formed between the fixed half ring and the movable half ring, one ends of the fixed half ring and the movable half ring are fixed on the installation seat through a first hinge shaft, and the other ends of the fixed half ring and the movable half ring are fixedly connected through the locking assembly;
the locking assembly comprises a first connecting hole, a second connecting hole, a connecting rod, a first locking piece and a second locking piece, wherein the first connecting hole is formed in the end part of the fixed semi-ring, the second connecting hole is formed in the end part of the movable semi-ring, the connecting rod penetrates through the first connecting hole and the second connecting hole, and the first locking piece and the second locking piece are respectively positioned at two ends of the connecting rod;
the first locking piece and the second locking piece are locking nuts which are arranged at two ends of the connecting rod and respectively abutted with the end part of the movable half ring or the end part of the fixed half ring;
the first locking piece is a locking nut which is arranged at the end part of the connecting rod and is abutted to the end part of the fixed semi-ring, the second locking piece is a wrench which is arranged at the other end of the connecting rod and is hinged to the connecting rod and is provided with an eccentric cam, and the end part of the movable semi-ring is provided with an arc surface which is abutted to the wrench.
2. The quick-change mechanism of a power battery according to claim 1, wherein the jacking wheel disc is provided with two oppositely arranged rotary inclined planes on an end face of one side far away from the power battery, and the first connecting section of the mounting screw is provided with a horizontal rotary rod which can be abutted with the rotary inclined planes and slide along the arrangement direction of the rotary inclined planes.
3. A quick change mechanism for a power cell as claimed in claim 2 wherein said two rotary ramps each increase in height in a clockwise direction.
4. The quick change mechanism of a power battery according to claim 1, wherein first connecting threads are provided on inner walls of the stationary half ring and the movable half ring, and second connecting threads engaged with the first connecting threads are provided on a second connecting section of the mounting screw.
5. The quick change mechanism of claim 1, wherein the mounting base on the locking device comprises a mounting plate for fixing the clamp and a connecting piece arranged on the mounting plate and fixedly connected with the power battery.
6. A quick change mechanism for a power cell as claimed in any one of claims 1 to 5 wherein said mounting base is provided with a threaded bore fixedly connected to said mounting screw, said mounting screw is provided with an external thread on a third connecting section thereof which engages with said threaded bore, said mounting screw being secured to said mounting base by said third connecting section.
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| CN201911071082.8A CN112757956B (en) | 2019-11-05 | 2019-11-05 | Quick-change mechanism of power battery |
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| CN201911071082.8A CN112757956B (en) | 2019-11-05 | 2019-11-05 | Quick-change mechanism of power battery |
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| CN112757956A CN112757956A (en) | 2021-05-07 |
| CN112757956B true CN112757956B (en) | 2024-03-22 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103112343A (en) * | 2013-02-17 | 2013-05-22 | 重庆市电力公司电力科学研究院 | Chassis-type power battery rapid locking mechanism |
| CN211107038U (en) * | 2019-11-05 | 2020-07-28 | 广州汽车集团股份有限公司 | Quick change mechanism of power battery |
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|---|---|---|---|---|
| CN105946812B (en) * | 2016-06-23 | 2017-12-19 | 蔚来汽车有限公司 | Lock body component, electrokinetic cell, its lockable mechanism and application method, the vehicles |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103112343A (en) * | 2013-02-17 | 2013-05-22 | 重庆市电力公司电力科学研究院 | Chassis-type power battery rapid locking mechanism |
| CN211107038U (en) * | 2019-11-05 | 2020-07-28 | 广州汽车集团股份有限公司 | Quick change mechanism of power battery |
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Effective date of registration: 20220105 Address after: 511400 No.36 Longying Road, Shilou Town, Panyu District, Guangzhou City, Guangdong Province Applicant after: GAC AION New Energy Vehicle Co.,Ltd. Address before: 510030 23 building, Cheng Yue mansion 448-458, Dongfeng Middle Road, Yuexiu District, Guangzhou, Guangdong. Applicant before: GUANGZHOU AUTOMOBILE GROUP Co.,Ltd. |
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