WO2019033716A1 - Procédé de verrouillage de boulon, système d'installation de bloc-batterie pouvant être échangé et procédé d'installation - Google Patents

Procédé de verrouillage de boulon, système d'installation de bloc-batterie pouvant être échangé et procédé d'installation Download PDF

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Publication number
WO2019033716A1
WO2019033716A1 PCT/CN2018/075035 CN2018075035W WO2019033716A1 WO 2019033716 A1 WO2019033716 A1 WO 2019033716A1 CN 2018075035 W CN2018075035 W CN 2018075035W WO 2019033716 A1 WO2019033716 A1 WO 2019033716A1
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WO
WIPO (PCT)
Prior art keywords
tightening
torque
bolt
battery pack
bolts
Prior art date
Application number
PCT/CN2018/075035
Other languages
English (en)
Chinese (zh)
Inventor
曹建航
李楠
林海岩
Original Assignee
上海蔚来汽车有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 上海蔚来汽车有限公司 filed Critical 上海蔚来汽车有限公司
Publication of WO2019033716A1 publication Critical patent/WO2019033716A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
    • B23P19/06—Screw or nut setting or loosening machines
    • 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
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S5/00—Servicing, maintaining, repairing, or refitting of vehicles
    • B60S5/06—Supplying batteries to, or removing batteries from, vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
    • B23P2700/50—Other automobile vehicle parts, i.e. manufactured in assembly lines

Definitions

  • the invention relates to the field of new energy vehicle quick-change technology; in particular, the invention relates to a bolt locking method, and further relates to a new energy vehicle battery pack installation system and a mounting method.
  • New energy vehicles are characterized by low noise, high energy efficiency, and no mobile exhaust emissions.
  • the energy supply of new energy vehicles can be divided into two modes: plug-in and power-on.
  • the charging time of the plug-in car is too long. Compared with the current fueling or refueling of traditional energy vehicles, the convenience of obtaining energy is far from meeting the needs of people.
  • the power-exchange mode can generally complete the power-changing process in a few minutes, even if Compared with conventional energy vehicles, its convenience is not inferior. From this perspective, the prospect of the power exchange model is even broader.
  • a first aspect of the invention provides a bolt locking method, wherein the method comprises:
  • Step A Screw all the bolts at the same time until the predetermined number of turns or the inflection point of the torque occurs, whichever comes first. If it is first screwed to the predetermined number of turns, proceed to step B. If the torque first occurs, proceed to the step. C;
  • Step B judging whether the torque has an inflection point, if yes, go to step D, otherwise proceed to step F;
  • Step C determining whether the number of turns of the screw is within the first error tolerance range, if yes, proceed to step D, otherwise proceed to step F;
  • Step D continue to screw all the bolts at a predetermined number of steps N, and determine whether the angle at which the bolt is rotated after the predetermined torque is screwed is within the second error tolerance range, and then proceed to step E, otherwise proceed to Step F;
  • Step E determining whether the angle of rotation of the bolt from the inflection point to the final torque is within the third error tolerance range, is the end of the screwing bolt, otherwise proceeds to step F;
  • Step F Unlock all the bolts and return to step A.
  • the predetermined number of turns is the number of times the bolt and the nut are engaged.
  • the first error tolerance range is the predetermined number of turns ⁇ 2 turns.
  • step D the predetermined torque per screwing is 1/N of the final torque.
  • step D the predetermined number of steps N is 2 to 4.
  • step D the predetermined number of steps is 3, the second error tolerance range is 4 ⁇ 2°, and, in step E, the third The error tolerance is 12 ⁇ 2 °.
  • steps A and B if the value of the torque exceeds the torque required when the bolt and nut threads are idling, it is determined that an inflection point occurs.
  • a second aspect of the present invention provides a new energy vehicle battery pack installation system, wherein the system includes:
  • a locking head the number of the locking heads being identical to the number of bolts of the electric battery pack for engaging with corresponding bolts to complete the tightening of the bolts;
  • the tightening control module for controlling the tightening head to perform a tightening action according to the method of any of the preceding first aspects.
  • system further comprises:
  • a lifting device for lifting and lowering the battery pack to match a mounting position on the vehicle;
  • a data collecting device for collecting the tightening head during tightening Torque and angle data;
  • the lift control module is configured to control the lifting height of the lifting device.
  • a third aspect of the present invention provides a method of installing a battery pack using a new energy vehicle battery pack installation system, wherein the method includes the method of any of the foregoing first aspects The method described in the method of tightening a plurality of bolts.
  • Figure 1 shows, in a schematic plan view, a battery pack with a locking bolt
  • Figure 2 shows, in a schematic plan view, a load platform with a locking head
  • Figure 3 shows the load platform of Figure 2 in a schematic side view
  • Figure 4 is a schematic plan view showing the battery pack of Figure 1 placed on the load platform of Figure 2;
  • FIG. 5 is a block diagram schematically showing the control system of the load platform of Figure 2;
  • Fig. 6 schematically shows a flow chart of a bolt locking method in accordance with an embodiment of the present invention.
  • Figure 1 shows, in a schematic plan view, a battery pack with a locking bolt.
  • the figure shows a square battery pack 1 and two (eight) lock bolts 2 are arranged on each circumferential side of the battery pack 1, and the battery pack 1 will pass through these locks.
  • the bolt 2 is tightened and mounted to the body of the new energy vehicle.
  • the battery pack can be designed in other shapes, and the battery pack can be placed with other numbers of multiple lock bolts at other locations.
  • Figure 2 shows, in a schematic plan view, a load platform with a locking head.
  • the figure shows a square carrier platform 3, and on its load plane, a locking head 4 of the same number and position as the number of bolts on the battery pack of Fig. 1 is arranged.
  • the load platform 3 is used to carry the battery pack 1 for replacement.
  • the locking head 4 can be engaged with the bolt head of the locking bolt 2 and can be used to simultaneously lock or unlock the tightening of all the locking bolts on the battery pack.
  • a lifting device 5 is arranged below the load platform 3 for lifting the battery pack 1 to fit the mounting position on the new energy vehicle.
  • the load platform can be designed in other shapes, and other numbers of locking heads can be placed on the load platform.
  • the number and arrangement position of the lifting devices 5 can also be varied in alternative embodiments.
  • Figure 3 shows the load platform of Figure 2 in a schematic side view, in which the locking head 4, lifting device 5, etc. of the load platform 3 can be seen from another angle. Further, it can be seen that a tightening controller 6, a data collecting device 8, and the like are further provided at each of the locking heads 4; a lifting controller 7 and the like are further provided at each of the lifting devices 5.
  • the data acquisition device can be used to collect torque and angle data during tightening of the tightening head.
  • the tightening controller can be used to control the tightening action of the tightening head.
  • the lift controller can be used to control the lift height of the lift device.
  • FIG 4 shows, in a schematic plan view, the battery pack 1 of Figure 1 placed on the carrier platform 3 of Figure 2 .
  • the locking head can already be fitted to the locking bolt 2 for tightening the locking bolt.
  • Fig. 5 schematically shows a block diagram of a control system of the carrier platform of Fig. 2.
  • the main controller can be communicatively coupled to each of the data acquisition device, the tightening controller and the lift controller. Specifically, the main controller lifts the load platform by controlling the lift controller, so that the battery pack is matched with the installation position on the new energy vehicle; the main controller starts tightening the bolt by controlling the tightening controller.
  • the data acquisition device can detect the torque and angle data during tightening. During the tightening process, the main controller can read the data collected by the data acquisition device and analyze it in real time.
  • FIG. 6 schematically shows a flow chart of a bolt locking method in accordance with an embodiment of the present invention.
  • Figure 6 shows the steps of the method in a simple form.
  • step A all the bolts are screwed at the same time until the predetermined number of turns or the inflection point of the torque occurs (whichever comes first). If it is first screwed to the predetermined number of turns, the process proceeds to step B, and if the torque first occurs, the process proceeds to step C.
  • the predetermined number of turns may be the number of turns of the bolt and the nut, or may be understood as the number of turns of the bolt and nut threads that are idling relative to each other.
  • step A if the value of the torque exceeds the torque required when the bolt and nut threads are idling, it can be determined that the aforementioned bite or idling is completed, and an inflection point occurs.
  • This step can be seen as a pre-tightening phase for each locking bolt and, if the conditions are met, a subsequent step-by-step tightening phase.
  • step B it is judged whether or not the torque has an inflection point, and the previous time is to step D, otherwise it proceeds to step F.
  • step B if the value of the torque exceeds the torque required when the bolt and nut threads are idling, it can be determined that an inflection point has occurred. If there is no inflection point after the predetermined number of turns, there may be problems such as the thread slip of the bolt or nut, the misalignment of the bolt and the nut, and the long bolt. Therefore, the corresponding remedial measures can be considered, for example, after replacing the bolt. Then restart the tightening operation.
  • step C it is determined whether the number of turns of the screw is within the first error tolerance range, and if yes, proceed to step D, otherwise proceed to step F.
  • the first error tolerance range herein may be set to a predetermined number of turns ⁇ 2 turns. Other optional ranges are not excluded in other embodiments. If the torque has not been screwed to the predetermined number of turns after the inflection point, there may be problems such as insufficient bolt length, thread of the bolt or nut, tilting of the bolt in the nut, etc., and the corresponding remedial measures may be considered. For example, replace the bolts and restart the tightening operation.
  • steps B and C are used to determine whether the pre-tightening phase has been successfully completed. If yes, proceed to step D for the next step of the tightening phase.
  • step D it is possible to continue to screw all the bolts in a predetermined number of steps N, and determine whether the angle at which the bolt is rotated after the predetermined torque is screwed is within the second error tolerance range, and then proceed to step E, otherwise advance Go to step F.
  • the value of the predetermined number of steps N may be set according to specific needs, such as but not limited to 2 to 4, and the like.
  • the predetermined torque for each spin may be equal, 1/N of the final torque, respectively. It should be understood that in an alternative embodiment, the torque that is spun each time in the predetermined number of steps N of the step screwing may be different values from each other.
  • the predetermined number of steps may be 3, and the second error allowable range may be, for example, 4 ⁇ 2°.
  • step E it is judged whether the angle from the inflection point to the final torque bolt rotation is within the third error tolerance range, and the screwing bolt is ended, otherwise proceeding to step F.
  • the third error tolerance range may be 12 ⁇ 2°. It should be understood that after this step, it can be determined whether the final torque and angle of the bolt are normal, and if it is normal, the tightening operation of each bolt is completed.
  • step F unlock all the bolts and return to step A.
  • step B step C, step D and step E, it can be understood that if any one of the steps is abnormal, the bolt needs to be unlocked, and then the tightening operation of the locking bolt is restarted from the beginning.
  • the 12-turn tightening torque value of the data is less than 2N ⁇ m, of which 12 turns are assumed.
  • the specific value is determined by the number of laps of the bolt and the nut, and the error is within 2 turns; 2N ⁇ m is the assumed value.
  • the specific value is the torque required for the bolt and nut threads to idling.
  • the torque After 212 laps, the torque has an inflection point and the data starts to rise.
  • the controller When the torque has an inflection point, the controller is suspended until the last one reaches the inflection point.
  • the controller When the bolt is tightened to 1/3 of the final torque, the controller is stopped. Until the last one reaches 1/3 of the final torque; continue to tighten the bolts to 2/3 of the final torque, then stop tightening the controller in turn until the last one reaches 2/3 final torque; continue to tighten the bolts to the final torque , maintained at this torque until the last one reaches the final torque.
  • the main controller processes and analyzes the collected data.
  • the following conditions are met from the inflection point to the final torque process data: 3 from the inflection point to the final torque rotation angle of 12°, the allowable error is 2°, where 12° is the assumed value, specifically The values vary according to the type and material of the bolt; 2° is the assumed value, and the specific values vary depending on the bolt type and material.
  • the main controller processes and analyzes the entire process data.
  • the process data of the eight bolts meets the above four conditions of 1234, and the tightening is successful. If the process data of the eight bolts does not meet the above four conditions of 1234, all the bolts need to be unlocked. Re-compact according to the above process and re-record the data until the process data of the 8 bolts meets the above four conditions of 1234, then the screwing is successful.
  • an aspect of the present invention also provides a new energy vehicle battery pack installation system, which may include a locking head and a tightening control module (or a tightening controller as shown in FIG. 5), wherein the locking head
  • the number of bolts may be the same as the number of bolts of the battery pack, and may be used to match the corresponding bolts to complete the tightening of the bolts; the tightening control module may be used to control the tightening head to perform the tightening action according to the method of any of the foregoing embodiments.
  • the system can also include a load platform, a lifting device, a data acquisition device, and a lift control module (or a lift controller as in Figure 5).
  • the load platform can be used to carry and transport the battery pack.
  • the lifting device can be used to lift and replace the battery pack so that it fits into the mounting position on the vehicle.
  • the data acquisition device can be used to collect torque and angle data of the tightening head during tightening.
  • the lift control module can be used to control the lift height of the lift device.
  • the main controller is communicatively coupled with the data acquisition device, the lift control module, the tightening control module, etc., and they may be distributed or integrated with the main controller.
  • another aspect of the present invention provides a method of installing a replacement battery pack using a new energy vehicle battery pack installation system, the method may include tightening a plurality of bolts by a method according to any of the foregoing embodiments. step.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

L'invention concerne un procédé de verrouillage de boulon, un système d'installation de bloc-batterie pouvant être échangé, et un procédé d'installation. Le procédé de verrouillage de boulon consiste à: fixer tous les boulons simultanément; diviser le processus de serrage en une étage de pré-serrage et une étape de serrage par paliers; pendant chaque étape, la surveillance et l'analyse en temps réel du couple de serrage et de l'angle; si les conditions de fixation ne sont pas satisfaites, le serrage de boulon est déverrouillé, et le processus de serrage est redémarré.
PCT/CN2018/075035 2017-08-17 2018-02-02 Procédé de verrouillage de boulon, système d'installation de bloc-batterie pouvant être échangé et procédé d'installation WO2019033716A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710706513.8A CN109396813B (zh) 2017-08-17 2017-08-17 螺栓锁紧方法、换电电池包安装系统及安装方法
CN201710706513.8 2017-08-17

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WO2019033716A1 true WO2019033716A1 (fr) 2019-02-21

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CN (1) CN109396813B (fr)
TW (1) TWI746793B (fr)
WO (1) WO2019033716A1 (fr)

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CN114248662A (zh) * 2020-09-11 2022-03-29 蓝谷智慧(北京)能源科技有限公司 一种基于rgv小车的解锁方法及解锁控制装置

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CN112026581B (zh) * 2020-08-20 2022-03-04 博众精工科技股份有限公司 加解锁控制方法、装置及存储介质、汽车电池换电系统
CN112571352B (zh) * 2020-12-01 2022-10-28 中国航发沈阳发动机研究所 一种带自锁螺母的螺栓连接拧紧方法
CN114178838B (zh) * 2021-12-28 2024-03-22 上海稊米汽车科技有限公司 一种应用于多平面工件的多锁附点锁附方法及设备

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CN109396813A (zh) 2019-03-01
TWI746793B (zh) 2021-11-21
TW201912459A (zh) 2019-04-01

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