WO2023159508A1 - 电池单体、电池、用电设备、电池单体的制造方法及设备 - Google Patents

电池单体、电池、用电设备、电池单体的制造方法及设备 Download PDF

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Publication number
WO2023159508A1
WO2023159508A1 PCT/CN2022/078069 CN2022078069W WO2023159508A1 WO 2023159508 A1 WO2023159508 A1 WO 2023159508A1 CN 2022078069 W CN2022078069 W CN 2022078069W WO 2023159508 A1 WO2023159508 A1 WO 2023159508A1
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WO
WIPO (PCT)
Prior art keywords
battery
transmission shaft
fixing belt
constraint
restraint
Prior art date
Application number
PCT/CN2022/078069
Other languages
English (en)
French (fr)
Inventor
杨辉
林志全
王勇
Original Assignee
宁德时代新能源科技股份有限公司
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 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Priority to PCT/CN2022/078069 priority Critical patent/WO2023159508A1/zh
Priority to CN202280029730.7A priority patent/CN117280532A/zh
Priority to CN202223592420.2U priority patent/CN219203381U/zh
Publication of WO2023159508A1 publication Critical patent/WO2023159508A1/zh

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204Racks, modules or packs for multiple batteries or multiple cells
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/242Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249Mountings; 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
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/262Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H01M50/264Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Definitions

  • the present application relates to the field of battery technology, and in particular, to a battery, an electrical device, and a manufacturing method and equipment for the battery.
  • the battery cells will expand, and the expansion of the battery cells will easily cause the overall deformation of the battery and affect the service life of the battery.
  • the present application provides a battery, an electrical device, a manufacturing method and equipment for the battery.
  • the battery can effectively alleviate the deformation problem of the battery and is beneficial to improve the service life of the battery.
  • the present application provides a battery, including: a first constraint member and a second constraint member arranged at intervals; a battery cell group, including a plurality of battery cells, and a plurality of the battery cells are stacked on the between the first restraint and the second restraint; the fixing strap includes a first end and a second end, the first end is fixed to the first restraint; and an adjustment device is mounted on The second constraint member and the adjustment device are used to connect with the second end and adjust the pre-tightening force of the fixing belt.
  • a plurality of battery cells are stacked and arranged between the first restraint member and the second restraint member, a fixing belt is provided on the first restraint member and an adjustment device is installed on the second restraint member, and the adjustment The device connects the fixing belt and adjusts the pre-tightening force of the fixing belt, which can avoid the problem that the fixing belt is too loose or too tight after assembly due to the dimensional tolerance of the fixing belt and the battery module, thus effectively solving the problem of inconsistent pre-tightening force of the fixing belt Problem: Because the pre-tightening force of the fixing belt can be adjusted through the adjusting device, the fixing belt can be adjusted to a better pre-tightening state, so that the fixing belt can be the restraint of the battery cell group by the first restraining member and the second restraining member Provide appropriate pre-tightening force, and better balance and bear the expansion force transmitted to the first restraint member and the second restraint member when the battery cell expand
  • the adjustment device includes a base and a transmission shaft, the base is fixed to the second constraint, the transmission shaft is rotatably mounted on the base, the transmission shaft is configured to be in contact with the The second end is connected and rotated to adjust the pre-tightening force of the fixing belt.
  • the adjustment device includes a base and a transmission shaft rotatably mounted on the base.
  • the pre-tightening force of the fixed belt can be adjusted by winding the fixed belt around the transmission shaft and rotating the transmission shaft.
  • the application controls the rotation shaft
  • the rotation angle of the fixed belt can control the pre-tightening degree of the fixed belt, which is convenient to adjust the fixed belt to any pre-tightened state, with strong adjustability and flexibility;
  • the application adjusts the pre-tightened force of the fixed belt by rotating the transmission shaft , that is, the linear force is adjusted through the rotating driving force.
  • This adjustment method has low operating intensity and strong operability; at the same time, the fixed belt is wound around the transmission shaft, and the transmission shaft has a large force-bearing area and strong bearing capacity, which effectively ensures that the adjustment device is The firmness of the connection of the fixing belt and the stability of the preload adjustment.
  • the adjusting device further includes a gear, the gear is fixed to the transmission shaft, and the second end is configured to mesh with the gear.
  • a gear is arranged on the transmission shaft, and the connection between the fixed belt and the transmission shaft is realized through the engagement between the second end of the fixed belt and the gear, and the multiple teeth of the gear play a multi-point limit on the second end. function, thereby effectively improving the reliability of the connection between the fixed belt and the transmission shaft and the tightness of the fixed belt winding on the transmission shaft; at the same time, the multiple teeth of the gear play the role of dispersing the force, reducing the damage caused by excessive local force.
  • the risk of failure of the connection between the transmission shaft and the fixed belt is effectively reduced, thereby effectively reducing the risk of the fixed belt detaching from the transmission shaft after being stressed, which is beneficial to improving the stability of the overall performance of the adjustment device.
  • the second end is provided with a plurality of limiting grooves, the plurality of limiting grooves are arranged at intervals along the extending direction of the fixing belt, and the limiting grooves are used for the gear Teeth inserted.
  • a plurality of limit slots are arranged at intervals at the second end, and the limit slots are inserted into the teeth of the gear.
  • the limiting slot penetrates through the fixing belt along the thickness direction of the fixing belt.
  • the limiting groove runs through the fixing belt along the thickness direction of the fixing belt, that is, the limiting groove is in the shape of a through hole.
  • the end limit can effectively ensure the stability of the gear to the second end limit, and reduce the risk of the fixing belt detaching from the transmission shaft after being stressed.
  • the fixing belt includes a fixed-length section and an adjusting section, one end of the fixed-length section is fixed to the first constraint, and the other end is connected to the adjusting section, and the limiting groove is arranged on the regulation section.
  • the fixing belt may include a fixed-length section and an adjusting section, and the fixed-length section and the adjusting section are connected to form a complete fixing belt structure.
  • This structure facilitates the fixing-length section and the adjusting section to be processed separately according to different processes and then integrated. , which is beneficial to reduce processing difficulty and processing cost; at the same time, such a structure is convenient for the fixed-length section and the adjustment section to be processed with different materials according to different forces and structural shapes after installation, which is conducive to further improving the overall steel belt. performance of the structure.
  • the transmission shaft includes: a transmission shaft body; a limiting flange formed on the transmission shaft body and protruding from the outer peripheral surface of the transmission shaft body, the limiting flange is used to limit The fixing belt moves along the axial direction of the transmission shaft.
  • the transmission shaft is provided with a limit flange, which plays a certain guiding role in the position where the fixed belt is wound on the transmission shaft, which is conducive to improving the convenience of the fixed belt preload adjustment operation.
  • the limit flange plays a role in limiting the position of the fixed belt on the transmission shaft, reducing the risk of the fixed belt being displaced on the transmission shaft, thereby helping to maintain the balance and stability of the force exerted by the transmission shaft on the fixed belt.
  • an operating part is provided at one end of the transmission shaft, and the operating part is used for connecting with a rotational driving source.
  • an operation part is provided at one end of the transmission shaft, and the operation part is arranged to facilitate connection with a corresponding rotation driving source, and the rotation driving source acts on the operation part to drive the transmission shaft to rotate.
  • the adjustment device further includes: a non-return mechanism, the non-return mechanism is configured to allow the transmission shaft to rotate in the direction of tensioning the fixing belt, and to limit the rotation of the transmission shaft in the direction of loosening the belt. Rotate in the direction of the strap described above.
  • a non-return mechanism is provided on the adjustment device, and the anti-loosening control of the fixing belt wound on the transmission shaft is realized by restricting the rotation direction of the transmission shaft.
  • the setting of the non-return mechanism can effectively prevent the battery from being fixed during use.
  • the problem that the belt automatically returns to loose due to the expansion force occurs, and the design of the non-return mechanism facilitates the intermittent rotation of the transmission shaft when the pre-tightening force is adjusted on the fixed belt, and the transmission shaft can be stably stopped at The current angle effectively ensures the convenience and controllability of the preload adjustment operation, especially the manual preload adjustment operation.
  • the non-return mechanism includes: a ratchet fixed to the transmission shaft, the central axis of the ratchet coincides with the central axis of the transmission shaft; a ratchet mounted on the base, the ratchet a pawl engages the ratchet, the pawl being configured to allow unidirectional rotation of the ratchet;
  • the non-return mechanism adopts a ratchet pawl mechanism.
  • the ratchet wheel can rotate synchronously with the transmission shaft.
  • the ratchet is forced to rotate and deviate from the meshing relationship with the ratchet, the ratchet can rotate, and the teeth that apply force to the ratchet move with the rotation of the ratchet until the ratchet is separated from the ratchet, and the ratchet resets under the force.
  • Re-mesh with the other teeth of the ratchet and when the ratchet rotates in the reverse direction, the tooth structure of the ratchet and the pawl structure restrict each other and limit self-locking to limit the reverse rotation of the ratchet. Its structure is mature and its performance is stable, which can effectively Play the function of restricting the rotation direction of the transmission shaft by the non-return mechanism.
  • the non-return mechanism further includes an elastic member for applying elastic force to the pawl, so as to keep the pawl in contact with the ratchet wheel.
  • the non-return mechanism is equipped with an elastic member, which exerts an elastic force on the pawl.
  • the arrangement of the elastic member enables the pawl to quickly and stably reset after losing the driving force of the ratchet, even if the pawl remains in contact with the ratchet. , so as to effectively ensure the stability of the pawl on the braking of the ratchet.
  • the first end is connected to the first restraint by a fastener.
  • the first end of the fixing belt is connected to the first restraining member through fasteners, which facilitates the grouping of batteries.
  • the type and quantity of fasteners can be flexibly configured according to the force of the fixing belt, thereby improving The reliability of the connection between the fixing belt and the first restraining member facilitates the stability of the connection between the fixing belt and the first restraining member.
  • both the fixing belt and the adjustment device are provided in plurality, and the plurality of fixing belts are distributed at intervals along the extending direction perpendicular to the fixing belt, and the fixing belt and the adjustment device are one One to one correspondence.
  • a plurality of fixing straps and adjusting devices corresponding to the fixing straps are arranged along the extension direction perpendicular to the fixing straps, so as to provide multi-point pre-tightening force to the first restraining member and the second restraining member, effectively Improve the coverage of the applied force, thereby further improving the restraining effect of the fixing belt, the first restraint and the second restraint on the expansion of the battery; more importantly, when the battery expands, the first restraint and the second restraint along the The forces at different positions perpendicular to the extension direction of the fixing belt are also different.
  • Setting multiple fixing belts with adjustable pre-tightening force can give different pre-tightening forces to each fixing belt according to the different installation positions of the fixing belts, so that there is It is beneficial to improve the offset degree of the expansion force of the first restraint member and the second restraint member to the battery cell, and is beneficial to reduce the force deformation of the first restraint member and the second restraint member, thereby reducing the deformation of the battery and prolonging the life of the battery. service life.
  • the first constraint member and the second constraint member are arranged at intervals along a first direction, and the plurality of battery cells are stacked and arranged along the first direction.
  • the first restraint and the second restraint are arranged at intervals along the first direction, and a plurality of battery cells are stacked and arranged between the first restraint and the second restraint along the first direction.
  • a structure makes the first restraint
  • the direction in which the first restraining member and the second restraining member are subjected to the pretensioning force of the fixing belt is the same as the direction in which they are subjected to the expansion force of the battery cell group, so as to better ensure that the first restraining member, the second restraining member and the fixing belt are Suppressive effect of battery swelling.
  • the battery includes a plurality of battery cell groups, and the plurality of battery cell groups are arranged side by side along the second direction between the first constraint member and the second constraint member, so The second direction is perpendicular to the first direction.
  • a plurality of battery cell groups are arranged side by side along the second direction between the first restraint member and the second restraint member, which is beneficial to improve the energy density of the battery.
  • the battery further includes: a box body; a plurality of beams, arranged at intervals in the box body and fixedly connected to the box body, and an accommodation cavity is formed between two adjacent beams; wherein , the battery cell group is arranged in the accommodating cavity, the first constraint is one of the two adjacent beams, and the second constraint is one of the two adjacent beams the other.
  • a box is provided and a beam is arranged in the box, and an accommodating cavity is formed between two adjacent beams.
  • the box plays a role in containing and protecting the structure of the battery, and the beam is used to limit and fasten the battery cell.
  • the above technical solution installs the fixing belt and the adjusting device on the beam, which can effectively improve the structural integrity of the battery, thereby improving the energy density of the overall battery; Good, strong pressure, which is conducive to further improving its offset against the expansion force of the battery cell and reducing the deformation of the battery.
  • the battery further includes: a battery module, the battery module includes the battery cell group and two end plates, and the two end plates are arranged on opposite sides of the battery cell group. Two sides; wherein, the first constraint is one of the two end plates, and the second constraint is the other of the two end plates.
  • the end plate plays a role of limiting and fastening multiple battery cells.
  • the end plate of the battery module is used to fix the fixing belt and the adjustment device, and there is no need to separately install the first The restraint part and the second restraint part reduce the space occupation rate of the battery, effectively save the implementation cost, and improve the convenience of installation and implementation of the fixing belt and the adjustment device.
  • the present application provides an electrical device, including the battery described in the above embodiment, where the battery is used to provide electrical energy.
  • the present application provides a battery manufacturing method, including: providing a first constraint and a second constraint, and arranging the first constraint and the second constraint at intervals; providing a battery cell group, The battery cell group includes a plurality of battery cells, and the plurality of battery cells are stacked between the first constraint member and the second constraint member; a fixing belt is provided, and the fixing belt includes a first an end and a second end, the first end is fixed to the first restraint; an adjustment device is provided, the adjustment is mounted on the second restraint, and the second end It is connected to the adjustment device, and the pre-tightening force of the fixing belt is adjusted through the adjustment device.
  • the present application provides a battery manufacturing equipment, including: providing a module for providing a first restraint member and a second restraint member, providing a battery cell group, providing a fixing belt, and providing an adjustment device, the first The restraining member and the second restraining member are arranged at intervals, the battery cell group includes a plurality of battery cells, and the fixing band includes a first end and a second end; an assembly module is used for a plurality of the battery cells The battery cells are stacked between the first constraint and the second constraint, the first end is fixed to the first constraint, and the adjustment device is installed on the second constraint a member, the second end is connected to the adjusting device, and the pre-tightening force of the fixing belt is adjusted through the adjusting device.
  • Fig. 1 is a schematic structural diagram of a vehicle provided by some embodiments of the present application.
  • Figure 2 is an axonometric view of a battery provided in some embodiments of the present application.
  • Fig. 3 is a top view of a battery provided by some embodiments of the present application.
  • Fig. 4 is a front view of the fixing belt connected to the adjustment device provided by some embodiments of the present application.
  • Fig. 5 is an isometric view of the fixing belt connected to the adjustment device provided by some embodiments of the present application;
  • Fig. 6 is an axonometric view of a fixing belt provided by some embodiments of the present application.
  • Fig. 7 is an axonometric view of an adjustment device provided by some embodiments of the present application.
  • Fig. 8 is a partially enlarged view of part A shown in Fig. 5;
  • Fig. 9 is a partially enlarged view of part B shown in Fig. 6;
  • Fig. 10 is a partially enlarged view of part C shown in Fig. 6;
  • Figure 11 is an exploded view of a battery provided in some other embodiments of the present application.
  • Fig. 12 is a schematic flowchart of a battery manufacturing method provided by some embodiments of the present application.
  • Fig. 13 is a schematic block diagram of a battery manufacturing equipment provided by some embodiments of the present application.
  • Marking instructions 1000-vehicle; 100-battery; 10-battery unit group; 11-battery unit; 20-box; 21-first box; 22-second box; 23-beam; 231-front Beam; 232-back beam; 30-first restraint; 40-second restraint; 50-fixing belt; 51-fixed length section; 511-first end; 522-limiting groove; 53-fastener; 60-adjusting device; 61-base; 62-transmission shaft; 621-transmission shaft body; 622-limiting flange; 63-gear; Check mechanism; 651-ratchet; 652-pawl; 653-elastic member; 654-rotating shaft; 200-controller; 300-motor; 2000-manufacturing equipment; 2100-first providing device; 2200-second providing device; 2300-third providing device; 2400-fourth providing device; 2500-first assembling device; 2600-second assembling device; 2700-third assembling device.
  • the term “multiple” refers to more than two (including two).
  • the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of the various components in the embodiments of the application shown in the drawings, as well as the overall thickness, length and width of the integrated device, are for illustrative purposes only, and should not constitute any limitation to the application .
  • the battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, which are not limited in the embodiments of the present application.
  • the battery cell can be in the form of a cylinder, a flat body, a cuboid or other shapes, which is not limited in this embodiment of the present application.
  • Battery cells are generally divided into three types according to packaging methods: cylindrical battery cells, square battery cells and pouch battery cells, which are not limited in this embodiment of the present application.
  • the battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity.
  • the battery mentioned in this application may include a battery module or a battery pack, and the like.
  • a battery may include a case for enclosing one or more battery cells. The box can prevent liquid or other foreign objects from affecting the charging or discharging of the battery cells.
  • the battery cell includes an electrode assembly and an electrolyte, and the electrode assembly is composed of a positive pole piece, a negative pole piece and a separator.
  • a battery cell works primarily by moving metal ions between the positive and negative pole pieces.
  • the positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer, the positive electrode active material layer is coated on the surface of the positive electrode current collector, and the positive electrode collector without the positive electrode active material layer protrudes from the positive electrode collector coated with the positive electrode active material layer. Fluid, the positive electrode current collector not coated with the positive electrode active material layer is used as the positive electrode tab.
  • the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobaltate, lithium iron phosphate, ternary lithium or lithium manganate.
  • the negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer, the negative electrode active material layer is coated on the surface of the negative electrode current collector, and the negative electrode collector without the negative electrode active material layer protrudes from the negative electrode collector coated with the negative electrode active material layer. Fluid, the negative electrode current collector not coated with the negative electrode active material layer is used as the negative electrode tab.
  • the material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon or silicon.
  • the number of positive pole tabs is multiple and stacked together, and the number of negative pole tabs is multiple and stacked together.
  • the material of the isolation film may be PP (polypropylene, polypropylene) or PE (polyethylene, polyethylene).
  • the electrode assembly may be a wound structure or a laminated structure, which is not limited in the embodiment of the present application.
  • Power batteries are not only used in energy storage power systems such as hydraulic, thermal, wind and solar power plants, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric vehicles, as well as military equipment and aerospace and other fields . With the continuous expansion of power battery application fields, its market demand is also constantly expanding.
  • the battery cells will expand, and the expansion of the battery cells will easily lead to deformation of the overall structure of the battery and affect the service life of the battery.
  • the inventor used cable ties to stabilize the battery module composed of battery cells, but the method of fixing the battery module with cable ties could not effectively alleviate the problem of battery deformation caused by the expansion of the battery cells.
  • the applicant further analyzed the reasons for the inconsistent pre-tightening force after the cable ties were installed and found that although the cable ties and the battery module will be produced according to the preset specifications, there is a production dimensional tolerance in the structure of the cable tie itself, and at the same time, there is a dimensional tolerance in the battery module Therefore, after the cable tie is assembled to the battery, the actual assembly effect is different, and the problem of insufficient pre-tightening force or excessive pre-tightening force is likely to occur, so that the problem of battery deformation caused by the expansion of the battery cell cannot be effectively alleviated.
  • the applicant has designed a battery after research.
  • multiple battery cells are stacked on the first constraint and the second constraint.
  • the fixing belt is fixed on the first restraining part, and the adjusting device is installed on the second restraining part, and the pre-tightening force of the fixing belt is connected and adjusted through the adjusting device.
  • the battery with this structure connects the fixing belt through the adjustment device and adjusts the pre-tightening force of the fixing belt, so as to avoid the problem of too loose or too tight fixing belt caused by the dimensional tolerance of the fixing belt and the battery module, and then effectively solve the problem.
  • the problem of inconsistent pretension of the fixing belt because the pretension of the fixing belt can be adjusted through the adjustment device, the fixing belt can be adjusted to a better pretension state, so that the fixing belt can be the first restraint and the second restraint
  • the restraint of the battery cell group provides an appropriate pre-tightening force, and better balances and bears the expansion force transmitted to the first restraint member and the second restraint member when the battery cell expands, thereby effectively inhibiting the expansion of the battery cell, so that The problem of battery deformation is alleviated, which is beneficial to prolong the service life of the battery.
  • the fixing strap and the adjusting device of the present application are directly arranged on the first restraining member and the second restraining member that constrain the battery cells.
  • the fixing strap of the battery of the present application occupies less space. The rate is low, which is conducive to improving the energy density of the overall battery.
  • the batteries disclosed in the embodiments of the present application can be used, but not limited to, in electrical equipment such as vehicles, ships, or aircrafts.
  • the batteries disclosed in this application can be used to form the power supply system of the electrical equipment. In this way, the service life and service life of the battery can be effectively improved. Use performance.
  • the embodiment of the present application provides an electric device using a battery as a power source.
  • the electric device can be, but not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, and the like.
  • electric toys may include fixed or mobile electric toys, such as game consoles, electric car toys, electric boat toys, electric airplane toys, etc.
  • spacecraft may include airplanes, rockets, space shuttles, spaceships, etc.
  • the battery described in the embodiment of the present application is not limited to be applicable to the electric device described above, but can also be applied to all electric devices using batteries.
  • the electric device is a vehicle as an example for description.
  • FIG. 1 is a schematic structural diagram of a vehicle 1000 provided by some embodiments of the present application.
  • the vehicle 1000 can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle.
  • the interior of the vehicle 1000 is provided with a battery 100 , and the battery 100 may be provided at the bottom, head or tail of the vehicle 1000 .
  • the battery 100 can be used for power supply of the vehicle 1000 , for example, the battery 100 can be used as an operating power source of the vehicle 1000 .
  • the vehicle 1000 may further include a controller 200 and a motor 300 , the controller 200 is used to control the battery 100 to supply power to the motor 300 , for example, for starting, navigating and running the vehicle 1000 .
  • the battery 100 can not only be used as an operating power source for the vehicle 1000 , but can also be used as a driving power source for the vehicle 1000 , replacing or partially replacing fuel oil or natural gas to provide driving power for the vehicle 1000 .
  • the battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity.
  • multiple battery cells can be connected in series, parallel or mixed to directly form a battery.
  • the mixed connection means that multiple battery cells are connected in series and in parallel.
  • Multiple battery cells can also be connected in series, parallel or mixed to form a battery cell group, and then multiple battery cells can be connected in series, parallel or mixed to form a battery.
  • Figure 2 is an isometric view of the battery 100 provided by some embodiments of the present application
  • Figure 3 is a top view of the battery 100 provided by some embodiments of the present application
  • Fig. 4 is a front view of the fixing belt connected to the adjusting device provided in some embodiments of the present application
  • FIG. 5 is an isometric view of the fixing belt connected to the adjusting device provided in some embodiments of the present application.
  • the battery 100 provided in some embodiments of the present application may include a first constraint member 30 and a second constraint member 40 arranged at intervals, a battery cell group 10 , a fixing belt 50 and an adjustment device 60 .
  • the battery cell group 10 includes a plurality of battery cells 11, and the plurality of battery cells 11 are stacked and arranged between the first constraint member 30 and the second constraint member 40, and the fixing band 50 includes a first end portion 511 and a second end portion 511.
  • the end portion 521 , the first end portion 511 is fixed to the first restraint member 30
  • the adjustment device 60 is installed on the second restraint member 40
  • the adjustment device 60 is used to connect with the second end portion 521 and adjust the pre-tightening force of the fixing belt 50 .
  • the first restraining member 30 and the second restraining member 40 are used to clamp and limit the plurality of battery cells 11, and play the role of mounting and bearing the fixing belt 50 and the adjusting device 60.
  • the first restraining member 30 And the second constraint member 40 can be in various structural forms, such as plate shape, beam shape, and the material of the first constraint member 30 and the second constraint member 40 can also be various, for example, steel, iron, aluminum, aluminum alloy, etc. .
  • the battery cell group includes a plurality of battery cells, and the multiple battery cells can be connected in series or in parallel or in parallel (mixed connection refers to a plurality of battery cells that are both connected in series and in parallel) together
  • a battery cell group is formed, and the battery cell group is limited between the first constraint member and the second constraint member; of course, the battery can also include multiple battery cell groups, and the battery cell groups are connected in series or in parallel or in parallel
  • a single battery cell group or a plurality of battery cell groups can be arranged between the first constraint member and the second constraint member.
  • each battery cell can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery, but not limited thereto.
  • the battery cells can be in the form of cylinders, flat bodies, cuboids or other shapes.
  • the fixing belt 50 can be a strip-like structure or a ring structure, can be spliced by multiple split structures, or can be formed as an integral structure, and the fixing belt 50 can be made of a metal material with good tensile and deformation resistance Made of, for example, steel, the fixing belt 50 may also be made of other materials, and the fixing belt 50 may be made of one material or may be formed by combining multiple structures of different materials.
  • the fixing belt 50 can be a strip-like structure.
  • FIG. 6 is an axonometric view of the fixing belt provided in some embodiments of the application; the length of the fixing belt 50
  • the direction (that is, the "extending direction of the fixing belt 50" described below) extends along the first direction X, the width direction of the fixing belt 50 extends along the second direction Y, and the thickness direction of the fixing belt 50 extends along the third direction Z.
  • the first end portion 511 of the fixing belt 50 can be connected to the first restraining member 30 by means of welding, riveting, etc., or can be integrally formed with the first restraining member 30 .
  • the adjusting device 60 is used to connect with the second end 521 and adjust the pre-tightening force of the fixing belt 50.
  • the second end 521 of the fixing belt 50 is connected to the adjusting device 60, and the adjusting device 60 acts on the second end portion 521 to connect and tighten the fixing belt 50, so that the fixing belt 50 has a pre-tightening force.
  • Pretightening force refers to the pre-applied force to enhance the reliability and tightness of the connection before receiving the working load, so as to prevent deformation or relative slippage between the connected parts after receiving the load.
  • the fixing belt 50 before being subjected to the expansion force of the battery cell 11, the fixing belt 50 is tightened by the adjusting device 60 to apply a pre-tightening force to the fixing belt 50, the first restraining member 30 and the second restraining member 40, so as to reduce the The amount of deformation of the first constraint member 30 and the second constraint member 40 after being subjected to the expansion force of the battery cell 11 is small.
  • the fixing belt 50, the first restraining member 30 and the second restraining member 40 can share the expansion force of a plurality of battery cells 11, offset at least part of the expansion force, and effectively reduce the The deformation of the battery 100 caused by the expansion of the small battery cell 11 is beneficial to prolong the service life of the battery 100 module; wherein, the pre-tightening force of the fixing belt 50 can be flexibly adjusted by the adjusting device 60, thereby effectively avoiding the deformation caused by the fixing belt 50 Due to the dimensional tolerance of the battery 100 module, the fixing band 50 is too loose or too tight after installation, and the pre-tightening force of the fixing band 50 is inconsistent, so as to ensure that the pre-tightening effect of the fixing band 50 can be effectively exerted.
  • Fig. 7 is an axonometric view of the adjustment device provided in some embodiments of the present application
  • Fig. 8 is a partial enlargement of part A shown in Fig. 5
  • Fig. 9 is a partial enlarged view of part B shown in Fig. 6 .
  • the adjustment device 60 may include a base 61 and a transmission shaft 62, the base 61 is fixed to the second constraint 40, the transmission shaft 62 is rotatably mounted on the base 61, the transmission shaft 62 is configured to be connected to the second end 521 and rotate to Adjust the pre-tightening force of the fixing belt 50 .
  • the base 61 can be detachably mounted on the second restraint member 40 through the fastener 53, the base 61 can also be welded to the second restraint member 40 or the base 61 and the second restraint member 40 are integrally formed, the base 61 serves as There are various implementation structures of the base 61 for carrying the function of the transmission shaft 62 , it only needs to be able to stably connect and support the transmission shaft 62 , and the transmission shaft 62 can be rotatably mounted on the base 61 through bearings.
  • the drive shaft 62 is configured to be connected to the second end 521 and rotate to adjust the pre-tightening force of the fixing belt 50, which refers to winding the fixing belt 50 through the rotation of the drive shaft 62, so that the fixing belt 50 is gradually tightened until The fixing belt 50 reaches a preset pretension state.
  • the transmission shaft 62 is used to connect and wind the fixing belt 50.
  • the axial direction of the transmission shaft 62 can extend along the width direction of the fixing belt 50 (ie, the Y direction). .
  • connection between the transmission shaft 62 and the second end 521 can be realized in various ways, for example: setting a limiting part on the transmission shaft 62, and quickly docking with the second end 521 through the limiting part, or when the battery 100 is assembled
  • the second end portion 521 is fixed to the transmission shaft 62 by a fastener 53 such as a bolt, or the second end portion 521 is welded to the transmission shaft 62 .
  • connection between the transmission shaft 62 and the second end 521 can be limited by a limiting part, and there are many ways to implement the limiting part.
  • the first limiting part is set, and the second limiting part matched with the first limiting part is set at the second end part 521 of the fixing band 50, and the second limiting part is realized through the cooperation of the first limiting part and the second limiting part.
  • the quick connection between the end part 521 and the transmission shaft 62, optionally, the first limit part and the second limit part can adopt the structure that the limit shaft and the limit hole cooperate, specifically, at the second end part 521 A limit hole is set, a protruding limit shaft is set on the axial surface of the transmission shaft 62, or a protruding limit shaft is set at the second end 521, a limit hole is set on the transmission shaft 62, and the limit shaft is inserted into the
  • the fast connection between the fixing belt 50 and the transmission shaft 62 can be realized through the limiting hole.
  • the limiting shaft can be a cylindrical structure, a rectangular structure or other special-shaped structures.
  • the shape of the limiting groove 522 is correspondingly adapted to the shape of the limiting shaft.
  • Winding the fixed belt 50 around the transmission shaft 62 and rotating the transmission shaft 62 can adjust the preload of the fixed belt 50.
  • the preload of the fixed belt 50 can be controlled, so that the fixed belt 50 can be adjusted to In any pre-tightening state, the adjustability and flexibility are strong, and the pre-tightening force of the fixing belt 50 is adjusted by the rotating driving force, so the work intensity is low and the operability is strong; at the same time, the fixing belt 50 is wound on the transmission shaft 62,
  • the transmission shaft 62 has a large force-bearing area and more balanced force, effectively ensuring the stability of the connection of the adjusting device 60 to the fixing belt 50 and the pre-tightening adjustment.
  • the adjusting device 60 further includes a gear 63 , the gear 63 is fixed to the transmission shaft 62 , and the second end 521 is configured to mesh with the gear 63 .
  • the gear 63 is fixed on the transmission shaft 62, that is, the gear 63 rotates under the drive of the transmission shaft 62, the gear 63 is meshed with the second end 521, that is, as the gear 63 rotates, The second end portion 521 is wound around the gear 63 and the meshing section between the second end portion 521 and the gear 63 gradually increases, the fixing belt 50 is gradually tightened, and the pre-tightening force is gradually strengthened.
  • the gear 63 can be mounted on the end of the transmission shaft 62 or the shaft surface of the transmission shaft 62 .
  • the gear 63 has a central hole
  • the transmission shaft 62 passes through the central hole of the gear 63
  • the gear 63 is fixed on the shaft body of the transmission shaft 62 and is coaxial with the transmission shaft 62
  • the gear 63 is located on the transmission shaft
  • the shaft body of 62 such a structure makes the transmission shaft 62 play a stable supporting role to the gear 63, effectively ensuring the stability of the gear 63 after being stressed.
  • a gear 63 is arranged on the transmission shaft 62, and the teeth of the gear 63 play a multi-point limiting effect on the second end 521, thereby effectively improving the reliability of the connection between the fixed belt 50 and the transmission shaft 62 and the winding of the fixed belt 50 on the transmission shaft. 62; at the same time, the multiple teeth of the gear 63 play a role in dispersing the force, reducing the failure of the connection between the transmission shaft 62 and the fixed belt 50 due to excessive local force at the connection between the fixed belt 50 and the transmission shaft 62 risk, thereby effectively reducing the risk of the fixing belt 50 detaching from the transmission shaft 62 after being stressed, which is conducive to improving the stability of the overall performance of the adjustment device 60 .
  • the second end portion 521 is provided with a plurality of limiting grooves 522, and the plurality of limiting grooves 522 are arranged at intervals along the extending direction of the fixing belt 50, and the limiting grooves 522 is used for inserting the teeth of the gear 63 .
  • the plurality of limiting grooves 522 of the second end 521 correspond to the teeth of the gear 63 one by one, and the teeth of the gear 63 are inserted into the corresponding limiting grooves 522 one by one to realize the gear 63 meshes with the second end portion 521, as the gear 63 rotates, the meshing section between the gear 63 and the second end portion 521 gradually increases, and the second end portion 521 is gradually wound on the gear 63, so that the fixing belt 50 is gradually stretched Tighten, the preload gradually increases.
  • the surface of the second end portion 521 facing the gear 63 may have a plurality of protruding teeth arranged at intervals. , so that the second end portion 521 forms a rack-like structure, and when the second end portion 521 is connected to the gear 63 , the teeth of the second end 521 are meshed with the teeth of the gear 63 .
  • the second end portion 521 is provided with a plurality of limiting grooves 522 at intervals, and the limiting grooves 522 are inserted into the teeth of the gear 63.
  • the fixing belt 50 is wound as the transmission shaft 62 rotates.
  • the teeth of the gear 63 are correspondingly inserted into the limiting slots 522 of the second end portion 521 , so as to stably wind and position the second end portion 521 of the fixing belt 50 on the transmission shaft 62 .
  • the limiting groove 522 runs through the fixing belt 50 along the thickness direction of the fixing belt 50 .
  • the thickness direction of the fixing belt 50 extends along the third direction Z, and the limiting groove 522 penetrates through the fixing belt 50 along the third direction Z.
  • the limiting groove 522 runs through the fixing belt 50 along the thickness direction of the fixing belt 50, that is, the limiting groove 522 is in the shape of a through hole.
  • the tooth portion of the gear 63 can realize the connection between the second end portion 521 and the transmission shaft 62, and the connection operation is more convenient; and, the tooth portion of the gear 63 runs through the second end portion 521, further improving the gear 63 to the second end portion. 521 connection and limit stability, thereby reducing the risk of the fixed belt 50 detaching from the drive shaft 62; at the same time, because the teeth of the gear 63 penetrate the second end 521, the second end 521 can be wound on the gear 63 in multiple layers , it is beneficial to improve the adjustment range of the fixing belt 50 .
  • the gear 63 can have a certain width, that is, the gear 63 can extend a certain distance along the axial direction of the transmission shaft 62, so as to ensure the shear strength of the teeth of the gear 63 and improve the strength of the teeth of the gear 63. Bearing performance.
  • the width direction of the limiting groove 522 is along the width direction of the fixing belt 50 (ie, the second direction Y).
  • Y is extended to form a strip structure, and the width of the limiting groove 522 is adapted to the width of the gear 63 .
  • the gear 63 can also adopt other implementation structures, such as: a plurality of protrusions can be formed on the transmission shaft 62, each protrusion extends along the radial direction of the transmission shaft 62, and a plurality of protrusions The protruding part is evenly distributed around the circumference of the transmission shaft 62 , and the protruding part is used for inserting into the limiting groove 522 .
  • each protrusion may be a cylindrical structure, a triangular structure, a trapezoidal structure, and the like.
  • the fixing belt 50 includes a fixed-length section 51 and an adjusting section 52 , one end of the fixed-length section 51 is fixed to the first constraint member 30 , the other end is connected to the adjusting section 52 , and the limiting groove 522 is arranged on the adjusting section 52 .
  • the adjustment section 52 is used to connect with the adjustment device 60 .
  • the fixed-length section 51 and the adjusting section 52 can be connected by means of riveting, screwing, welding, gluing and the like.
  • the adjusting section 52 and the fixed-length section 51 can be made of the same material, for example, both the adjusting section 52 and the fixed-length section 51 can be made of steel.
  • the adjustment section 52 and the fixed-length section 51 can also use different materials. Materials with better deformability, such as the fixed-length section 51 can be made of steel, the adjustment section 52 can be made of plastic, and the fixed-length section 51 and the adjustment section 52 can be processed separately and then assembled.
  • the fixed-length section 51 and the adjustment section 52 are connected by the fixing belt 50, which is convenient for separate processing according to the different processes of the fixed-length section 51 and the adjustment section 52, which is beneficial to reduce processing difficulty and processing cost; at the same time, such a structure is convenient for fixed-length
  • the segment 51 and the adjusting segment 52 can be processed with different materials according to different forces and structural shapes after installation, which is beneficial to further improve the performance of the overall steel belt structure.
  • the transmission shaft 62 includes a transmission shaft body 621 and a limiting flange 622.
  • the limiting flange 622 is formed on the transmission shaft body 621 and protrudes from the outer peripheral surface of the transmission shaft body 621.
  • the limiting flange 622 is used for To limit the axial movement of the fixing belt 50 along the transmission shaft 62 .
  • the transmission shaft body 621 is rotatably mounted on the base 61 , two limiting flanges 622 can be arranged on the transmission shaft body 621 at intervals along the axial direction of the transmission shaft body 621 , and the fixing belt 50 is wound around the transmission shaft body 621 Between the two limiting flanges 622 of the drive shaft body 621 to limit the axial movement of the fixing belt 50 along the transmission shaft body 621 .
  • one end of the transmission shaft body 621 is rotatably mounted on the base 61, and the other end of the transmission shaft body 621 forms a limiting flange 622, and the base 61 and the limiting flange 622 work together to The axial movement of the fixing belt 50 along the transmission shaft body 621 is limited.
  • the gear 63 is fixed to the transmission shaft 62
  • the gear 63 is divided between two between the limiting flanges 622; if the base 61 and a limiting flange 622 work together to limit the axial movement of the fixing belt 50 along the transmission shaft body 621, the gear 63 is located between the limiting flange 622 and the base 61 .
  • the limit flange 622 plays a certain guiding and fool-proof role in the movement of the fixed belt 50 wound on the transmission shaft 62, which is convenient for the operator to quickly and accurately pull the fixed belt 50 to the exact position on the transmission shaft 62 for pre-tightening. It is beneficial to improve the convenience of the pre-tightening adjustment operation of the fixing belt 50.
  • the limit flange 622 plays a role in limiting the position of the fixing belt 50 on the transmission shaft 62, so as to avoid the deviation of the fixing belt 50 during the pre-tightening process.
  • one end of the transmission shaft 62 is provided with an operating part 64, and the operating part 64 is used for connecting with a rotational driving source.
  • the rotating drive source refers to the source of the force that provides the rotating drive for the rotation of the transmission shaft.
  • the rotating driving source can be an electric drive mechanism or manually driven by the operator through a tool. It can be understood that different rotating driving sources or different
  • the implementation structure of the operation part of the working tool is also different. For example, if the transmission shaft can be driven and rotated by a small motor, the operation part of the transmission shaft should be adapted to the output end of the small motor.
  • the operating part 64 can be a structure similar to a bolt cap adapted to a wrench, and the operating part 64 can be in the shape of an outer hexagon, an inner hexagon or other conventional shapes that can be matched with a wrench or other tools.
  • the operator uses the operating tool to act on the operating part 64 to twist, thereby driving the transmission shaft 62 to rotate.
  • the setting of the operation part 64 is convenient for connecting with a corresponding rotation driving source, and the rotation driving source acts on the operation part 64 to drive the transmission shaft 62 to rotate.
  • the adjusting device 60 further includes a non-return mechanism 65 configured to allow the transmission shaft 62 to rotate in the direction of tensioning the fixing belt 50 and limit the rotation of the transmission shaft 62 in the direction of loosening the fixing belt 50 .
  • the transmission shaft 62 is rotatably mounted on the base 61, and the transmission shaft 62 can rotate forward and reverse around its own central axis, and the fixed belt 50 is wound around the transmission shaft 62.
  • the fixed belt 50 can be tensioned by positive rotation, and the fixed belt 50 can be loosened by the reverse rotation of the transmission shaft 62 around its central axis.
  • the function of the mechanism 65 is to limit the rotation direction of the transmission shaft 62, that is, to allow the transmission shaft 62 to rotate forward (tensioning the fixing belt 50), and to limit the rotation of the transmission shaft 62 in the reverse direction (releasing the fixing belt 50), thereby maintaining the fixing belt The effect of 50 preload.
  • a non-return mechanism 65 is provided on the adjustment device 60 to prevent loosening of the fixing belt 50 wound on the transmission shaft 62 by limiting the rotation direction of the transmission shaft 62.
  • the setting of the non-return mechanism 65 can effectively prevent the battery 100 from The fixed belt 50 is automatically loosened due to the expansion force, and the design of the non-return mechanism 65 can intermittently rotate the transmission shaft 62 when the pre-tightening force is adjusted to the fixed belt 50, and the transmission shaft 62 can stop after the rotation drive source is removed. From the current point of view, it effectively guarantees the convenience and controllability of the preload adjustment operation, especially the manual adjustment operation.
  • the non-return mechanism 65 may include a ratchet 651 and a pawl 652.
  • the ratchet 651 is fixed to the transmission shaft 62.
  • the central axis of the ratchet 651 coincides with the central axis of the transmission shaft 62.
  • the ratchet 652 is installed on the base 61 , and the ratchet 652 is engaged with the ratchet 651 , and the ratchet 652 is configured to allow the ratchet 651 to rotate in one direction.
  • the ratchet 651 is coaxially connected with the transmission shaft 62 , and the ratchet 651 can rotate synchronously with the transmission shaft 62 .
  • the ratchet 652 can be rotatably mounted on the base 61 through the rotating shaft 654 , the rotating axis of the rotating shaft 654 is parallel to the rotating axis of the transmission shaft 62 , and the ratchet 652 is engaged with the ratchet 651 .
  • the teeth of the ratchet 651 push the ratchet 652, and the ratchet 652 is forced to produce a rotation deviation compared with the rotating shaft 654, thereby breaking away from the meshing relationship with the ratchet 651, and the ratchet 651 can rotate.
  • the tooth portion of the ratchet 651 that applies force to the ratchet 652 is displaced with the rotation of the ratchet 651, and finally disengages from the ratchet 652.
  • the other teeth mesh.
  • the teeth structure of the ratchet 651 and the structure of the pawl 652 restrict each other to limit self-locking, so as to limit the reverse rotation of the ratchet 651 .
  • the ratchet 651 rotates in the forward direction
  • the ratchet 651 rotates in the opposite direction should be interpreted in a broad sense, and the introduction of forward and reverse is only to illustrate the difference in the direction of rotation when the ratchet 651 rotates around its own central axis. If forward rotation is understood as clockwise rotation, then reverse rotation is counterclockwise rotation, and forward rotation and reverse rotation can be interchanged in practical application structures.
  • the ratchet 651 is connected to the transmission shaft 62, and the non-return mechanism 65 including the ratchet 651 and the pawl 652 is used to allow the transmission shaft 62 to rotate in the direction of tensioning the fixing belt 50, and to limit the rotation of the transmission shaft 62 in the direction of loosening.
  • the direction of the fixed strap 50 is rotated. Therefore, it can be understood that the transmission shaft 62 rotates in the direction of tensioning the fixing belt 50, driving the ratchet 651 to rotate in the above-mentioned forward direction, and the transmission shaft 62 rotates in the direction of loosening the fixing belt 50, driving the ratchet 651 to rotate in the above-mentioned reverse direction. .
  • the non-return mechanism 65 adopts a ratchet wheel 651 and a pawl 652 structure, which has a mature structure and stable performance, and can effectively exert the restriction effect of the non-return mechanism 65 on the rotation direction of the transmission shaft 62 .
  • the non-return mechanism 65 can also have other structures.
  • the non-return mechanism can include a rack, a relay gear and a stopper sleeve, and the relay gear is fixed on the transmission shaft 62.
  • the central axis of the relay gear is aligned with the transmission shaft.
  • the central axis of the shaft 62 coincides, the stop sleeve is fixedly installed on the base 61, the rack is passed through the brake sleeve and the tooth portion of the rack meshes with the transfer gear, and at the same time, the rack is provided with helical teeth, and the The extending direction is consistent with the extending direction of the teeth of the rack.
  • An elastic sheet is arranged in the stop sleeve, and the elastic sheet abuts against the helical teeth and meshes with the helical teeth.
  • the matching relationship between the stop sleeve and the helical teeth can refer to the cable tie mechanism in the conventional technology, that is, a plurality of rows of helical teeth are arranged side by side along the length extension direction of the cable tie, and one end of the cable tie is connected with a stop sleeve , the stop sleeve is provided with an elastic piece that can engage with the helical teeth, and the end of the cable tie away from the stop sleeve is inserted into the stop sleeve and continuously tightened, so that the limit space of the closed loop formed by the cable tie can be continuously reduced, because The helical teeth are engaged with the elastic piece, and the cable tie cannot be pulled out of the stop sleeve in reverse.
  • the transfer gear When used as a check mechanism, the transfer gear is coaxially connected with the transmission shaft 62, and the transmission shaft 62 drives the transfer gear to rotate synchronously, and the rack and the transfer gear mesh, so the transfer gear can drive the rack to move linearly. If the helical teeth on the rack mesh with the elastic sheet in the stop sleeve, the stop sleeve can control the linear movement direction of the rack and only allow the rack to move in one direction.
  • the transmission shaft 62 When applied to the embodiment of the present application, when the transmission shaft 62 rotates in the direction of tensioning the fixed belt 50, it drives the relay gear to rotate, and the relay gear drives the rack to move linearly. At this time, the stop sleeve allows the rack to move linearly.
  • the relay gear rotates in the reverse direction and applies force to the rack to drive the rack to move in a straight line in the opposite direction. At this time, the helical teeth on the rack and the stop The elastic pieces of the sleeve are engaged to prevent the rack from moving in reverse. If the rack cannot move in a straight line in the opposite direction, the relay gear cannot rotate, which prevents the transmission shaft 62 from rotating in the direction of loosening the fixing belt 50 .
  • the non-return mechanism can also be a one-way bearing, and the transmission shaft is rotated on the base through the one-way bearing.
  • the one-way bearing has an outer ring and an inner ring, and the base is connected to the outer ring of the one-way bearing.
  • the ring is fixedly connected, and the transmission shaft extends into the inner ring of the one-way bearing and is coaxially connected with the one-way bearing.
  • the rotatable direction of the one-way bearing should be consistent with the rotation direction of the transmission shaft along the tensioned fixing belt.
  • the non-return mechanism 65 further includes an elastic member 653 for applying elastic force to the pawl 652 to keep the pawl 652 in contact with the ratchet 651 .
  • the elastic member 653 may be a structure such as a compression spring, a leaf spring, or a torsion spring.
  • a compression spring exerts elastic tension on the ratchet 652 , so that the ratchet 652 always keeps in contact with the ratchet 651 .
  • the elastic member 653 can also use a bow-like leaf spring, one end of the leaf spring is fixed to the base 61, and the other end forms a free end, the protruding part of the leaf spring abuts against the pawl 652, and the leaf spring The spring gives elastic pressure to the protruding part, so that the ratchet 652 keeps contacting the ratchet 651 all the time.
  • the first end portion 511 may be connected to the first restraining member 30 through a fastener 53 .
  • FIG. 10 is a partially enlarged view of part C shown in FIG. 5 .
  • the fastening member 53 can use conventional fastening structures such as bolts, self-tapping screws, pins, rivets, and welding nails.
  • the first end portion 511 is connected to the first restraint member 30 through bolts, that is, the first end portion 511 and the first restraint member 30 are both provided with mounting holes, and the bolts pass through the first end portion 511 and the first restraint member
  • the mounting hole 30 connects the first end portion 511 to the first restraining member 30 .
  • the first end portion 511 may be connected to the first restraint member 30 through a plurality of fasteners 53 .
  • the first end portion 511 is connected to the first restraint member 30 through four bolts, and the four bolts are distributed at intervals along the direction perpendicular to the extending direction of the fixing band 50 (ie, the second direction Y), so that
  • the connection method makes the fixed belt 50 more evenly stressed in its own width direction (ie, the second direction Y), and the shear resistance of the multiple bolts is stronger, ensuring the connection between the first end 511 and the first restraining member 30 firmness and stability.
  • the first end 511 of the fixing band 50 is connected to the first restraining member 30 through the fastener 53, which facilitates the manufacture of the fixing band 50 and the first restraining member 30 and facilitates the assembly of the battery 100.
  • the force condition improves the reliability of the connection between the fixing belt 50 and the first constraint member 30 by flexibly configuring the type and quantity of the fastener 53 , so as to ensure the stability of the connection between the fixing belt 50 and the first constraint member 30 .
  • multiple fixing belts 50 and adjusting devices 60 are provided, and the fixing belts 50 are distributed at intervals along a direction perpendicular to the extending direction of the fixing belts 50 , and the fixing belts 50 correspond to the adjusting devices 60 one by one.
  • the fixing straps 50 there may be two, three, four, five, etc. of the fixing straps 50 .
  • there are five fixing straps 50 and the five fixing straps 50 are evenly distributed on the first constraint member 30 along a direction perpendicular to the extending direction of the fixing straps 50 (ie, the second direction Y).
  • a plurality of fixing straps 50 and adjusting devices 60 corresponding to the fixing straps 50 are arranged along a direction perpendicular to the extending direction of the fixing straps 50, so as to provide multi-point pre-tightening force to the first restraining member 30 and the second restraining member 40, Effectively improve the coverage of the applied force, thereby further improving the restraining effect of the fixing belt 50 and the first restraint 30 and the second restraint 40 on the expansion of the battery 100; more importantly, when the battery 100 expands, the first restraint 30
  • the stresses at different positions perpendicular to the extending direction of the fixing strap 50 of the second restraint member 40 are also different, and a plurality of fixing straps 50 with adjustable pre-tightening force can be provided according to the different installation positions of the fixing strap 50.
  • each fixing belt 50 is conducive to improving the offset degree of the expansion force of the battery cell 11 by the first restraining member 30 and the second restraining member 40, and are conducive to reducing the tension of the first restraining member 30 and the second restraining member 40 degree of stress deformation, thereby reducing the deformation of the battery 100 and prolonging the service life of the battery 100 .
  • the first constraining member 30 and the second constraining member 40 are arranged at intervals along the first direction, and a plurality of battery cells 11 are stacked and arranged along the first direction.
  • the first direction may be the direction of the collision force or the main expansion force direction of the battery cell group 10 .
  • the first constraining member 30 and the second constraining member 40 are arranged at intervals along the first direction, and a plurality of battery cells 11 are stacked and arranged between the first constraining member 30 and the second constraining member 40 along the first direction.
  • the direction in which the first restraint 30 and the second restraint 40 are subjected to the pretension force of the fixing belt 50 is the same as the direction in which they are subjected to the expansion force of the plurality of battery cells 11 in the battery cell group 10, so as to better ensure that the first The restraining effect of the first restraint 30 , the second restraint 40 and the fixing band 50 on the expansion of the battery 100 .
  • the battery 100 may include a plurality of battery cell groups 10, and the plurality of battery cell groups 10 are arranged side by side between the first constraint member 30 and the second constraint member 40 along the second direction. perpendicular to the first direction.
  • each battery cell group 10 includes a plurality of battery cells 11, that is to say, multiple rows of battery cells 11 can be arranged between the first constraint member 30 and the second constraint member 40, each A row of battery cells 11 includes a plurality of battery cells 11, and the plurality of battery cells 11 in each row are stacked along a first direction, and multiple rows of battery cells 11 are arranged side by side along a second direction.
  • the first direction and the second direction vertical.
  • Arranging a plurality of battery cell groups 10 side by side along the second direction between the first restraint member 30 and the second restraint member 40 is beneficial to improve the energy density of the battery 100 .
  • the battery 100 may further include: a box body 20 and a plurality of beams 23, the plurality of beams 23 are arranged at intervals in the box body 20 and are fixedly connected with the box body 20, and a gap is formed between two adjacent beams 23.
  • An accommodating cavity wherein, the battery cell group 10 is disposed in the accommodating cavity, the first restraining member 30 is one of the two adjacent beams, and the second restraining member 40 is the other of the two adjacent beams.
  • FIG. 11 is an exploded view of a battery 100 provided in some other embodiments of the present application.
  • the box 20 may include a first box 21 and a second box 22 , and the first box 21 and the second box 22 After being covered with each other, a battery cavity is formed.
  • the shapes of the first box 21 and the second box 22 may be determined according to the shapes of a plurality of battery cell groups, and each of the first box 21 and the second box 22 may have an opening.
  • both the first box body 21 and the second box body 22 can be hollow cuboids and only one face is an opening face, the openings of the first box body 21 and the second box body 22 are arranged oppositely, and the first box body 21 and the second box body 22 are arranged oppositely.
  • the second boxes 22 are interlocked to form the box 20 with a closed chamber.
  • a plurality of battery cells 11 are connected in parallel or connected in series or in parallel and placed in the box 20 formed by fastening the first box 21 and the second box 22 . It can be understood that a battery cell group 10 formed by multiple battery cells 11 can be directly placed in the box body 20 , or a plurality of battery cell groups 10 can be placed in the box body 20 to form a battery 100 .
  • two beams 23 may be arranged inside the box body 20 , and the two beams 23 may be arranged at opposite ends of the box body 20 , and an accommodating cavity is formed between the two beams 23 .
  • three, four, five or more beams 23 can also be arranged at intervals in the box body 20, and an accommodating cavity is formed between every two adjacent beams 23, that is, the battery 100 cavity of the box body 20 can be composed of multiple beams.
  • Each beam 23 is divided into multiple accommodating cavities.
  • the beam 23 of the box body 20 can be integrally formed with the side wall of the box body 20 , or can be separately arranged and connected with the box body 20 in a welding direction or detachably connected with a fastener 53 .
  • a front beam 231 and a rear beam 232 facing each other along the length direction of the box body 20 are fixed inside the box body 20 , and an accommodation cavity is formed between the front beam 231 and the rear beam 232 , and the battery cell group 10
  • a plurality of battery cells 11 are stacked and arranged in the container along the length direction of the box body 20, the first end portion 511 of the fixing belt 50 is connected to the front beam 231, and the adjustment device 60 is installed on the rear beam 232, that is, the first restraining member 30 is
  • the front beam 231 and the second restraint 40 are the rear beam 232 .
  • the box body 20 plays a role of containing and protecting the structure of the battery 100 , the beam 23 provided in the box body 20 is used to limit and fasten the battery cells 11 , and the fixing belt 50 and the adjusting device 60 are directly installed on the box body 20 .
  • the beam 23 of the box body 20 can effectively improve the structural integrity of the battery 100, thereby increasing the energy density of the overall battery 100;
  • the offset of the expansion force of the battery cell 11 reduces the deformation of the battery 100 .
  • the battery 100 may further include: a battery module, the battery module includes a battery cell group 10 and two end plates, and the two end plates are arranged on opposite sides of the battery cell group 10; wherein, the first A constraint 30 is one of the two end plates and a second constraint 40 is the other of the two end plates.
  • a plurality of battery cells 11 can be connected in series, parallel or mixed to directly form the battery 100, or can be connected in series, parallel or mixed to form a battery cell group 10 first, and then a plurality of battery cells 10 can be connected in series. , parallel or mixed connection to form the battery 100.
  • the battery 100 may include one or more battery modules, and the battery module includes a battery cell group 10 and two end plates, and a limiting cavity is formed between the two end plates so that the battery cell group 10 The limit is in the limit cavity.
  • the battery module can also include two side plates (not shown in the figure), the two end plates are arranged at intervals, the two side plates are connected to the two end plates, and the two end plates and the two side plates are surrounded to form The limiting cavity, the battery cell group 10 is arranged in the limiting cavity.
  • the end plate plays a role of limiting and fastening a plurality of battery cells 11.
  • the end plate of the battery module is used to fix the fixing belt 50 and the adjustment device 60, and there is no need to separately install the first constraint 30 and the second restraining member 40 reduce the space occupancy rate of the battery 100 and effectively save the implementation cost, and improve the convenience of installation and implementation of the fixing belt 50 and the adjustment device 60 .
  • the present application also provides an electric device, including the battery 100 described in any of the above schemes, and the battery 100 is used to provide electric energy for the electric device.
  • the electric device may be any of the aforementioned devices or systems using the battery 100 .
  • the present application provides a battery 100, the battery 100 includes a first restraint 30 and a second restraint 40 arranged at intervals, a battery cell group 10, and a fixing belt 50 and the adjustment device 60, the battery cell group 10 includes a plurality of battery cells 11, and the plurality of battery cells 11 are stacked and arranged between the first restraint member 30 and the second restraint member 40;
  • the fixing band 50 includes a first end portion 511 and the second end portion 521, the first end portion 511 is fixed to the first constraint member 30 by four bolts, the four bolts are distributed at intervals along the direction perpendicular to the extension of the fixing band 50, the second end portion 521 is along the A plurality of limiting grooves 522 are distributed at intervals along the extending direction, and the limiting grooves 522 penetrate through the fixing belt 50 along the thickness direction of the fixing belt 50 .
  • the adjusting device 60 is installed on the second restraining member 40, and the adjusting device 60 includes a base 61, a drive shaft 62 rotatably mounted on the base 61, a gear 63 and a non-return mechanism 65, and the base 61 is fixed to the second restraining member 40 by bolts , the gear 63 is fixed on the transmission shaft 62 , and the limiting groove 522 of the second end portion 521 is used for inserting the teeth of the gear 63 .
  • the check mechanism 65 includes a ratchet 651, a pawl 652 and a compression spring.
  • the ratchet 651 is coaxially fixed to the drive shaft 62, the pawl 652 is mounted on the base 61, the pawl 652 is engaged with the ratchet 651, and one end of the compression spring is connected to the base 61. The other end is connected with the ratchet 652 , and the compression spring exerts elastic tension on the ratchet 652 so that the ratchet 652 always keeps in contact with the ratchet 651 .
  • the structure of the ratchet 651 and the pawl 652 restrict the rotation of the transmission shaft 62 in the direction of loosening the fixing belt 50, and the transmission shaft 62 stops rotating Afterwards, the second end portion 521 is connected and wound around the transmission shaft 62 , and the fixing belt 50 is in a tight state.
  • FIG. 12 is a schematic flow chart of the manufacturing method of the battery 100 provided by some embodiments of the present application.
  • the manufacturing method includes:
  • S100 providing a first constraint 30 and a second constraint 40, and arranging the first constraint 30 and the second constraint 40 at intervals;
  • S200 Provide a battery cell group 10, the battery cell group 10 includes a plurality of battery cells 11, and stack the plurality of battery cells 11 between the first constraint member 30 and the second constraint member 40;
  • S300 Provide a fixing strap 50, the fixing strap 50 includes a first end portion 511 and a second end portion 521, and fix the first end portion 511 to the first constraint member 30;
  • S400 Provide an adjustment device 60 , install the adjustment device 60 on the second constraint member 40 , connect the second end portion 521 to the adjustment device 60 , and adjust the pre-tightening force of the fixing belt 50 through the adjustment device 60 .
  • the embodiment of the present application also provides a battery 100 manufacturing equipment 2000, please refer to Figure 13, Figure 13 is a schematic block diagram of the battery 100 manufacturing equipment 2000 provided by some embodiments of the present application, the manufacturing equipment 2000 includes a supply module and an assembly module , the providing module may include a first providing device 2100, a second providing device 2200, a third providing device 2300, and a fourth providing device 2400, and the assembling module may include a first assembling device 2500, a second assembling device 2600 and a third assembling device 2700 .
  • the first providing device 2100 is used to provide the first restraint 30 and the second restraint 40, and the first restraint 30 and the second restraint 40 are arranged at intervals; the second supply device 2200 is used to provide the battery cells 11; the third provides The device 2300 is used for providing the fixing strap 50 , the fourth providing device 2400 is used for providing the adjusting device 60 , and the fixing strap 50 includes a first end 511 and a second end 521 .
  • the first assembling device 2500 is used for stacking and arranging a plurality of battery cells 11 between the first constraint member 30 and the second constraint member 40 .
  • the second assembling device 2600 is used for fixing the first end portion 511 to the first restraint part 30 and installing the adjustment device 60 to the second restraint part 40 .
  • the third assembly device 2700 is used to connect the second end portion 521 to the adjustment device 60 , and adjust the pre-tightening force of the fixing belt 50 through the adjustment device 60 .

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Abstract

本申请实施例提供一种电池、用电装置、电池的制造方法及设备,电池包括:间隔设置的第一约束件和第二约束件;电池单体组,层叠布置于第一约束件和第二约束件之间;固定带,包括第一端部和第二端部,第一端部固定于第一约束件;以及调节装置,安装于第二约束件,调节装置用于与第二端部连接并调节固定带的预紧力。本申请通过调节装置连接固定带并调节固定带的预紧力,有效避免固定带预紧力不一致的问题,通过调节固定带的预紧力,使得固定带能够更好的均衡以及承担电池单体膨胀时传至第一约束件和第二约束件的膨胀力,有效抑制因电池单体的膨胀带来的电池变形的问题,有利于延长电池的使用寿命。

Description

电池单体、电池、用电设备、电池单体的制造方法及设备 技术领域
本申请涉及电池技术领域,具体而言,涉及一种电池、用电装置、电池的制造方法及设备。
背景技术
节能减排是汽车产业可持续发展的关键,电动车辆由于其节能环保的优势成为汽车产业可持续发展的重要组成部分。对于电动车辆而言,电池技术又是关乎其发展的一项重要因素。
随着使用时间的增加,电池单体会发生膨胀,电池单体的膨胀容易导致电池整体变形,影响电池的使用寿命。
发明内容
本申请提供一种电池、用电装置、电池的制造方法及设备,该电池能够有效缓解电池变形问题,有利于提高电池的使用寿命。
第一方面,本申请提供了一种电池,包括:间隔设置的第一约束件和第二约束件;电池单体组,包括多个电池单体,多个所述电池单体层叠布置于所述第一约束件和所述第二约束件之间;固定带,包括第一端部和第二端部,所述第一端部固定于所述第一约束件;以及调节装置,安装于所述第二约束件,所述调节装置用于与所述第二端部连接并调节所述固定带的预紧力。
本申请实施例的技术方案中,多个电池单体层叠布置在第一约束件和第二约束件之间,在第一约束件上设置固定带并在第二约束件上安装调节装置,调节装置连接固定带并调节固定带的预紧力,可以避免因固定带和电池模组存在的尺寸公差而产生固定带装配后过松或过紧的问题,从而有效解决固定带预紧力不一致的问题;因为能够通过调节装置调节固定带的预紧力,从而能够将固定带调整至较佳的预紧状态,使得固定带能够为第一约束件和第二约束件对电池单体组的约束提供合适的预紧力,并更好的均衡以及承担电池单体膨胀时传至第一约束件和第二约束件的膨胀力,从而有效抑制电池单体膨胀,使得电池变形问题得到缓解,有利于延长电池的使用寿命;同时,本申请的固定带和调节装置直接设置于约束电池单体的第一约束件和第二约束件上,相较于采用缠绕式固定带结构的电池,本申请的电池的固定带空间占用率低,有利于提高整体电池的能量密度。
在一些实施例中,所述调节装置包括底座和传动轴,所述底座固定于所述第二约束件,所述传动轴可转动地安装于所述底座,所述传动轴被配置为与所述第二端部连接并通过转动以调节所述固定带的预紧力。
上述技术方案中,调节装置包括底座和可转动安装在底座上的传动轴,将固定带缠绕于传动轴、转动传动轴即可调节固定带的预紧力,一方面,本申请通过控制转动轴的转动角度即可控制固定带的预紧程度,便于将固定带调节至任一预紧状态,可调性、灵活性强;另一方面,本申请通过转动传动轴调节固定带的预紧力,即通过旋转驱动力调节直线力,这种调节方式作业强度低、可操作性强;同时,固定带卷绕于传动轴,传动轴的受力面积大,承载力强,有效保证调节装置对固定带的连接的牢固性及预紧调节的稳定性。
在一些实施例中,所述调节装置还包括齿轮,所述齿轮固定于所述传动轴,所述第二端部被配置为与所述齿轮啮合。
上述技术方案中,在传动轴上设置齿轮,通过固定带的第二端部与齿轮的啮合实现固定带与传动轴的连接,齿轮的多个齿部对第二端部起到多点限位作用,从而有 效提高固定带与传动轴连接的可靠性以及固定带卷绕在传动轴上的紧密性;同时,齿轮的多个齿起到分散受力的作用,降低因局部受力过大而使传动轴与固定带连接失效的风险,从而有效降低固定带受力后脱离传动轴的风险,有利于提高调节装置的整体性能的稳定性。
在一些实施例中,所述第二端部设置有多个限位槽,所述多个限位槽沿所述固定带的延伸方向间隔设置,所述限位槽用于供所述齿轮的齿部插入。
上述技术方案中,第二端部间隔设置多个限位槽,限位槽供齿轮的齿部插入,在进行固定带的预紧力调节时,随着传动轴的转动,固定带卷绕于传动轴的同时,齿轮的齿部对应插入第二端部的限位槽,以将固定带的第二端部稳定的卷绕定位在传动轴上。
在一些实施例中,所述限位槽沿所述固定带的厚度方向贯穿所述固定带。
上述技术方案中,限位槽沿固定带的厚度方向贯穿固定带,即限位槽呈通孔状结构,这样的设计使得齿轮的齿部能够通过限位槽贯穿第二端部以对第二端部限位,有效保证齿轮对第二端部限位的稳定性,降低固定带受力后脱离传动轴的风险。
在一些实施例中,所述固定带包括定长段和调节段,所述定长段的一端固定于所述第一约束件,另一端与所述调节段连接,所述限位槽设置于所述调节段。
上述技术方案中,固定带可以包括定长段和调节段,定长段和调节段连接形成完整固定带结构,这样的结构便于定长段和调节段可以根据工艺不同而单独加工后再行整合,有利于降低加工难度和加工成本;同时,这样的结构便于定长段和调节段可根据受力不同以及安装后的结构形状的不同而采用不同的材质加工,从而有利于进一步提高整体钢带结构的使用性能。
在一些实施例中,所述传动轴包括:传动轴本体;限位凸缘,形成在所述传动轴本体且凸出于所述传动轴本体的外周面,所述限位凸缘用于限制所述固定带沿所述传动轴的轴向移动。
上述技术方案中,传动轴设置有限位凸缘,限位凸缘对固定带卷绕于传动轴上的位置起到一定导向作用,有利于提高固定带预紧调节操作时的便捷性,同时,限位凸缘对固定带在传动轴上的位置起到限位作用,降低固定带在传动轴上偏位的风险,从而有利于保持传动轴对固定带施力的均衡性及稳定性。
在一些实施例中,所述传动轴的一端设置有操作部,所述操作部用于连接转动驱动源。
上述技术方案中,传动轴的一端设置操作部,操作部的设置便于连接相应的转动驱动源,转动驱动源作用于操作部以带动传动轴转动。
在一些实施例中,所述调节装置还包括:止回机构,所述止回机构被配置为允许所述传动轴沿张紧所述固定带的方向转动,并限制所述传动轴沿放松所述固定带的方向转动。
上述技术方案中,在调节装置设置止回机构,通过限制传动轴的转动方向而实现对缠绕在传动轴上的固定带进行防松控制,止回机构的设置可有效防止电池在使用过程中固定带因受到膨胀力而自动返松的问题发生,并且,止回机构的设计,便于在对固定带进行预紧力调节时可间歇性转动传动轴,撤去转动驱动源后传动轴可以稳定停在当前角度,有效保证了预紧调节操作尤其是人工进行预紧调节操作的便捷性、可控性。
在一些实施例中,所述止回机构包括:棘轮,固定于所述传动轴,所述棘轮的中心轴线与所述传动轴的中心轴线重合;棘爪,安装于所述底座,所述棘爪与所述棘轮啮合,所述棘爪被配置为允许所述棘轮单向旋转;
上述技术方案中,止回机构采用棘轮棘爪机构,棘轮可以与传动轴同步转动,棘爪活动安装于底座,棘爪与棘轮啮合,在棘轮正向旋转时,棘轮的齿部推动棘爪,棘爪受力产生旋转偏位,脱离与棘轮的啮合关系,棘轮得以转动,向棘爪施力的齿部随棘轮的旋转移动,直至与棘爪脱离后,棘爪在受力作用下复位,重新与棘轮的其他齿部啮合,而当棘轮预反向旋转时,棘轮的齿部结构与棘爪结构相互制约限位自锁, 以限制棘轮反向转动,其结构成熟、性能稳定,可有效发挥止回机构对传动轴的转动方向的限制作用。
在一些实施例中,所述止回机构还包括弹性件,所述弹性件用于向所述棘爪施加弹性力,以使所述棘爪保持与所述棘轮接触。
上述技术方案中,止回机构设置弹性件,弹性件对棘爪施加弹性力,弹性件的设置使得棘爪在失去棘轮的推动作用力后,能够快速、稳定复位,即使棘爪保持与棘轮接触,从而有效保证棘爪对棘轮制动的稳定性。
在一些实施例中,所述第一端部通过紧固件与所述第一约束件连接。
上述技术方案中,固定带的第一端部通过紧固件与第一约束件连接,方便电池的成组,同时,可以根据固定带受力情况灵活配置紧固件的类型、数量,从而提高固定带与第一约束件连接的可靠性,便于保证固定带与第一约束件连接的稳定性。
在一些实施例中,所述固定带和所述调节装置均设置有多个,多个所述固定带沿垂直于所述固定带的延伸方向间隔分布,所述固定带和所述调节装置一一对应。
上述技术方案中,沿垂直于固定带的延伸方向布置多个固定带和与固定带一一对应的调节装置,以对第一约束件和第二约束件给与多点位预紧力,有效提高施力覆盖范围,从而进一步提高固定带与第一约束件和第二约束件对电池的膨胀的抑制效果;更为重要的是,电池膨胀时,第一约束件和第二约束件的沿垂直于固定带的延伸方向的不同位置的受力也不同,设置多个预紧力可调的固定带,可以根据固定带安装位置的不同而给与各个固定带不同的预紧力,从而有利于提高第一约束件和第二约束件对电池单体的膨胀力的抵消度,有利于降低第一约束件和第二约束件的受力变形度,从而降低电池的变形量,延长电池的使用寿命。
在一些实施例中,所述第一约束件和所述第二约束件沿第一方向间隔设置,所述多个电池单体沿所述第一方向层叠布置。
上述技术方案中,第一约束件和第二约束件沿第一方向间隔设置且多个电池单体沿第一方向层叠布置在第一约束件和第二约束件之间,这样的结构使得第一约束件和第二约束件受固定带预紧力的受力方向和受电池单体组膨胀力的受力方向相同,以更好的保证第一约束件、第二约束件和固定带对电池膨胀的抑制效果。
在一些实施例中,所述电池包括多个电池单体组,多个所述电池单体组沿第二方向并排排布于所述第一约束件和所述第二约束件之间,所述第二方向与所述第一方向垂直。
上述技术方案中,在第一约束件和第二约束件之间沿第二方向并排设置多个电池单体组,有利于提高电池的能量密度。
在一些实施例中,所述电池还包括:箱体;多个梁,间隔设置于所述箱体内且与所述箱体固定连接,相邻两个所述梁之间形成一个容纳腔;其中,所述电池单体组设置于所述容纳腔内,所述第一约束件为所述相邻两个梁中的一者,所述第二约束件为所述相邻两个梁中的另一者。
上述技术方案中,设置箱体并在箱体内设置梁,相邻两个梁之间形成容纳腔,箱体对电池的结构起到容纳和保护作用,梁用于限位和紧固电池单体组,上述技术方案将固定带和调节装置安装于梁,能够有效提高电池的结构整合性,进而提高整体电池的能量密度;另一方面,梁固定于箱体,其结构刚性强、抗形变性能好、承压力强,有利于进一步提高其对电池单体的膨胀力的抵消量,降低电池的变形量。
在一些实施例中,所述电池还包括:电池模组,所述电池模组包括所述电池单体组和两个端板,两个所述端板设置于所述电池单体组的相对两侧;其中,所述第一约束件为所述两个端板中的一者,所述第二约束件为所述两个端板中的另一者。
上述技术方案中,在电池模组中,端板对多个电池单体起到限位紧固作用,本技术方案利用电池模组的端板固定固定带和调节装置,无需单独加装第一约束件和第二约束件,降低电池的空间占用率且有效节约实施成本、提高固定带和调节装置安装实施的便捷性。
第二方面,本申请提供一种用电装置,包括上述实施例所述的电池,所述电池 用于提供电能。
第三方面,本申请提供一种电池的制造方法,包括:提供第一约束件和第二约束件,将所述第一约束件和所述第二约束件间隔设置;提供电池单体组,所述电池单体组包括多个电池单体,将多个所述电池单体层叠布置于所述第一约束件和所述第二约束件之间;提供固定带,所述固定带包括第一端部和第二端部,将所述第一端部固定于所述第一约束件;提供调节装置,将所述调节装置安装于所述第二约束件,将所述第二端部连接至所述调节装置,通过所述调节装置调节所述固定带的预紧力。
第四方面,本申请提供一种电池的制造设备,包括:提供模块,用于提供第一约束件和第二约束件、提供电池单体组、提供固定带及提供调节装置,所述第一约束件和所述第二约束件间隔设置,所述电池单体组包括多个电池单体,所述固定带包括第一端部和第二端部;组装模块,用于将多个所述电池单体层叠布置于所述第一约束件和所述第二约束件之间,将所述第一端部固定于所述第一约束件,将所述调节装置安装于所述第二约束件,将所述第二端部连接至所述调节装置,通过所述调节装置调节所述固定带的预紧力。
附图说明
为了更清楚地说明本申请实施例的技术方案,下面将对本申请实施例中所需要使用的附图作简单地介绍,显而易见地,下面所描述的附图仅仅是本申请的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据附图获得其他的附图。
图1为本申请一些实施例提供的车辆的结构示意图;
图2为本申请一些实施例提供的电池的轴测图;
图3为本申请一些实施例提供的电池的俯视图;
图4为本申请一些实施例提供的固定带连接于调节装置的主视图;
图5为本申请一些实施例提供的固定带连接于调节装置的轴测图;
图6为本申请一些实施例提供的固定带的轴测图;
图7为本申请一些实施例提供的调节装置的轴测图;
图8为图5所示的A部分的局部放大图;
图9为图6所示的B部分的局部放大图;
图10为图6所示的C部分的局部放大图;
图11为本申请又一些实施例提供的电池的爆炸图;
图12为本申请一些实施例提供的电池的制造方法的流程示意图;
图13为本申请一些实施例提供的电池的制造设备的示意性框图;
在附图中,附图并未按照实际的比例绘制。
标记说明:1000-车辆;100-电池;10-电池单体组;11-电池单体;20-箱体;21-第一箱体;22-第二箱体;23-梁;231-前梁;232-后梁;30-第一约束件;40-第二约束件;50-固定带;51-定长段;511-第一端部;52-调节段;521-第二端部;522-限位槽;53-紧固件;60-调节装置;61-底座;62-传动轴;621-传动轴本体;622-限位凸缘;63-齿轮;64-操作部;65-止回机构;651-棘轮;652-棘爪;653-弹性件;654-转轴;200-控制器;300-马达;2000-制造设备;2100-第一提供装置;2200-第二提供装置;2300-第三提供装置;2400-第四提供装置;2500-第一组装装置;2600-第二组装装置;2700-第三组装装置。
具体实施方式
为使本申请实施例的目的、技术方案和优点更加清楚,下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本申请一部分实施例,而不是全部的实施例。通常在此处附图中描述和示出的本申请实施例的组件可以以各种不同的配置来布置和设计。
因此,以下对在附图中提供的本申请的实施例的详细描述并非旨在限制要求保护的本申请的范围,而是仅仅表示本申请的选定实施例。基于本申请中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本申请保护的范围。
下面将结合附图对本申请技术方案的实施例进行详细的描述。以下实施例仅用于更加清楚地说明本申请的技术方案,因此只作为示例,而不能以此来限制本申请的保护范围。
除非另有定义,本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同;本文中所使用的术语只是为了描述具体的实施例的目的,不是旨在于限制本申请;本申请的说明书和权利要求书及上述附图说明中的术语“包括”和“具有”以及它们的任何变形,意图在于覆盖不排他的包含。
在本申请实施例的描述中,技术术语“第一”“第二”等仅用于区别不同对象,而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量、特定顺序或主次关系。在本申请实施例的描述中,“多个”的含义是两个以上,除非另有明确具体的限定。
在本文中提及“实施例”意味着,结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例,也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是,本文所描述的实施例可以与其它实施例相结合。
在本申请实施例的描述中,术语“多个”指的是两个以上(包括两个)。
在本申请实施例的描述中,技术术语“中心”“纵向”“横向”“长度”“宽度”“厚度”“上”“下”“前”“后”“左”“右”“竖直”“水平”“顶”“底”“内”“外”“顺时针”“逆时针”“轴向”“径向”“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本申请实施例和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本申请实施例的限制。
在本申请实施例的描述中,除非另有明确的规定和限定,技术术语“设置”“安装”“相连”“连接”“固定”等术语应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或成一体;可以是机械连接,也可以是电连接、信号连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在本申请实施例中的具体含义。
在本申请的实施例中,相同的附图标记表示相同的部件,并且为了简洁,在不同实施例中,省略对相同部件的详细说明。应理解,附图示出的本申请实施例中的各种部件的厚度、长宽等尺寸,以及集成装置的整体厚度、长宽等尺寸仅为示例性说明,而不应对本申请构成任何限定。
本申请中,电池单体可以包括锂离子二次电池、锂离子一次电池、锂硫电池、钠锂离子电池、钠离子电池或镁离子电池等,本申请实施例对此并不限定。电池单体可呈圆柱体、扁平体、长方体或其它形状等,本申请实施例对此也不限定。电池单体一般按封装的方式分成三种:柱形电池单体、方形电池单体和软包电池单体,本申请实施例对此也不限定。
本申请的实施例所提到的电池是指包括一个或多个电池单体以提供更高的电压和容量的单一的物理模块。例如,本申请中所提到的电池可以包括电池模块或电池包等。电池可以包括用于封装一个或多个电池单体的箱体。箱体可以避免液体或其他异物影响电池单体的充电或放电。
电池单体包括电极组件和电解液,电极组件由正极极片、负极极片和隔离膜组成。电池单体主要依靠金属离子在正极极片和负极极片之间移动来工作。正极极片包括正极集流体和正极活性物质层,正极活性物质层涂覆于正极集流体的表面,未涂敷正极活性物质层的正极集流体凸出于已涂覆正极活性物质层的正极集流体,未涂敷正 极活性物质层的正极集流体作为正极极耳。以锂离子电池为例,正极集流体的材料可以为铝,正极活性物质可以为钴酸锂、磷酸铁锂、三元锂或锰酸锂等。负极极片包括负极集流体和负极活性物质层,负极活性物质层涂覆于负极集流体的表面,未涂敷负极活性物质层的负极集流体凸出于已涂覆负极活性物质层的负极集流体,未涂敷负极活性物质层的负极集流体作为负极极耳。负极集流体的材料可以为铜,负极活性物质可以为碳或硅等。为了保证通过大电流而不发生熔断,正极极耳的数量为多个且层叠在一起,负极极耳的数量为多个且层叠在一起。隔离膜的材质可以为PP(polypropylene,聚丙烯)或PE(polyethylene,聚乙烯)等。此外,电极组件可以是卷绕式结构,也可以是叠片式结构,本申请实施例并不限于此。
目前,从市场形势的发展来看,动力电池的应用越加广泛。动力电池不仅被应用于水力、火力、风力和太阳能电站等储能电源系统,而且还被广泛应用于电动自行车、电动摩托车、电动汽车等电动交通工具,以及军事装备和航空航天等多个领域。随着动力电池应用领域的不断扩大,其市场的需求量也在不断地扩增。
随着使用时间的增加,电池单体会发生膨胀,电池单体的膨胀容易导致电池整体结构变形,影响电池的使用寿命。
在前期技术中,发明人采用扎带对电池单体构成的电池模组进行稳固,但扎带固定电池模组的方式无法有效缓解电池单体膨胀导致电池变形的问题。
申请人注意到,在电池组装过程中存在扎带与电池尺寸不匹配的异常,扎带安装后存在预紧力不一致的问题,扎带因其预紧力的不可控性而无法有效抑制电池变形。申请人进一步分析扎带安装后预紧力不一致的原因发现,虽然扎带和电池模组都会遵循预设规格生产,但扎带本身的结构存在生产尺寸公差,同时,电池模组也存在尺寸公差,所以在将扎带组装到电池后,其实际组装效果不同,容易出现预紧力不够或者预紧力超标的问题,从而无法有效缓解电池单体膨胀导致电池变形的问题。
基于以上考虑,为了有效缓解电池单体膨胀导致的电池变形的问题,申请人经过研究,设计了一种电池,本申请的电池将多个电池单体层叠布置于第一约束件和第二约束件之间,在第一约束件上固定固定带,在第二约束件上安装调节装置,通过调节装置连接并调节固定带的预紧力。
采用这种结构的电池,通过调节装置连接固定带并调节固定带的预紧力,从而避免因固定带和电池模组的尺寸公差导致的固定带过松或过紧的问题产生,进而有效解决固定带预紧力不一致的问题;因为能够通过调节装置调节固定带的预紧力,从而能够将固定带调整至较佳的预紧状态,使得固定带能够为第一约束件和第二约束件对电池单体组的约束提供合适的预紧力,并更好的均衡以及承担电池单体膨胀时传至第一约束件和第二约束件的膨胀力,从而有效抑制电池单体膨胀,使得电池变形问题得到缓解,有利于延长电池的使用寿命。
同时,本申请的固定带和调节装置直接设置于约束电池单体的第一约束件和第二约束件上,相较于采用缠绕式固定带结构的电池,本申请的电池的固定带空间占用率低,从而有利于提高整体电池的能量密度。
本申请实施例公开的电池可以但不限用于车辆、船舶或飞行器等用电设备中,可以使用本申请公开的电池组成该用电设备的电源系统,这样,能够有效提升电池的使用寿命和使用性能。
本申请实施例提供一种使用电池作为电源的用电装置,用电装置可以为但不限于手机、平板、笔记本电脑、电动玩具、电动工具、电瓶车、电动汽车、轮船、航天器等等。其中,电动玩具可以包括固定式或移动式的电动玩具,例如,游戏机、电动汽车玩具、电动轮船玩具和电动飞机玩具等等,航天器可以包括飞机、火箭、航天飞机和宇宙飞船等等。
本申请的实施例描述的电池不仅仅局限适用于上述所描述的用电装置,还可以适用于所有使用电池电池的用电装置,但为描述简洁,以下实施例以本申请一实施例的一种用电装置为车辆为例进行说明。
请参照图1,图1为本申请一些实施例提供的车辆1000的结构示意图。车辆 1000可以为燃油汽车、燃气汽车或新能源汽车,新能源汽车可以是纯电动汽车、混合动力汽车或增程式汽车等。车辆1000的内部设置有电池100,电池100可以设置在车辆1000的底部或头部或尾部。电池100可以用于车辆1000的供电,例如,电池100可以作为车辆1000的操作电源。车辆1000还可以包括控制器200和马达300,控制器200用来控制电池100为马达300供电,例如,用于车辆1000的启动、导航和行驶时的工作用电需求。
在其他一些实施例中,电池100不仅可以作为车辆1000的操作电源,还可以作为车辆1000的驱动电源,代替或部分地代替燃油或天然气为车辆1000提供驱动动力。
其中,本申请的实施例所提到的电池是指包括一个或多个电池单体以提供更高的电压和容量的单一的物理模块。其中,多个电池单体之间可以串联、并联或者混联直接组成电池,混联指的是,多个电池单体中既有串联又有并联。多个电池单体也可以先串联、并联或者混联组成电池单体组,多个电池单体组再串联、并联或者混联组成电池。
请参照图2和图3,并进一步参照图4和图5,图2为本申请一些实施例提供的电池100的轴测图,图3为本申请一些实施例提供的电池100的俯视图,图4为本申请一些实施例提供的固定带连接于调节装置的主视图,图5为本申请一些实施例提供的固定带连接于调节装置的轴测图。本申请一些实施例提供的电池100可以包括间隔设置的第一约束件30和第二约束件40、电池单体组10、固定带50和调节装置60。其中,电池单体组10包括多个电池单体11,多个电池单体11层叠布置于第一约束件30和第二约束件40之间,固定带50包括第一端部511和第二端部521,第一端部511固定于第一约束件30,调节装置60安装于第二约束件40,调节装置60用于与第二端部521连接并调节固定带50的预紧力。
其中,第一约束件30和第二约束件40用于对多个电池单体11起到夹持限位作用,并起到固定带50和调节装置60的安装承载作用,第一约束件30和第二约束件40可以是多种结构形式,比如板状、梁状,第一约束件30和第二约束件40的材质也可以是多种,比如,钢、铁、铝、铝合金等。
可以理解的是,电池单体组包括多个电池单体,多个电池单体之间可串联或并联或混联(混联是指多个电池单体中既有串联又有并联)在一起形成电池单体组,电池单体组限位于第一约束件和第二约束件之间;当然,电池也可以包括多个电池单体组,多个电池单体组再串联或并联或混联组成电池,也就是说,第一约束件和第二约束件之间可以设置单个电池单体组或多个电池单体组。其中,每个电池单体可以为二次电池或一次电池;还可以是锂硫电池、钠离子电池或镁离子电池,但不局限于此。电池单体可呈圆柱体、扁平体、长方体或其它形状等。
固定带50可以为类似条形的结构也可以为环形结构,可以为多个分体结构拼接而成,也可以为一体成型的结构,固定带50可以采用抗拉、抗变形性能好的金属材料制成,比如钢材,固定带50也可以由其他材料制成,固定带50可以由一种材料制成也可以由不同材料的多个结构组合形成。
在本申请一些实施例中,固定带50可以为类似条形的结构,具体而言,请参照图6,图6为本申请一些实施例提供的固定带的轴测图;固定带50的长度方向(即下述的“固定带50的延伸方向”)沿第一方向X延伸,固定带50的宽度方向沿第二方向Y延伸,固定带50的厚度方向沿第三方向Z延伸。
固定带50的第一端部511可以通过焊接、铆接等方式与第一约束件30连接,也可以与第一约束件30一体成型。
可以理解的是,“调节装置60用于与第二端部521连接并调节固定带50的预紧力”是指,电池100组装完成后,固定带50的第二端部521连接于调节装置60,且调节装置60作用于第二端部521而连接并绷紧固定带50,使得固定带50具有预紧力。
“预紧力”是指在受到工作载荷之前,为了增强连接的可靠性和紧密性,以防 止受到载荷后连接件间出现变形或者相对滑移而预先加的力。在本申请实施例中,在受到电池单体11的膨胀力之前,通过调节装置60绷紧固定带50为固定带50、第一约束件30和第二约束件40施加预紧力,以减小第一约束件30、第二约束件40受到电池单体11的膨胀力后的变形量。
本申请通过对固定带50施加预紧力,从而使固定带50、第一约束件30和第二约束件40能够分担多个电池单体11的膨胀力,抵消至少部分膨胀力,进而有效减小电池单体11的膨胀造成的电池100的变形量,有利于延长电池100模组的使用寿命;其中,固定带50的预紧力可以通过调节装置60灵活调节,从而有效避免因固定带50和电池100模组的尺寸公差而产生的固定带50安装后过松或过紧、固定带50预紧力不一致的问题,保证固定带50的预紧作用能够有效发挥。
在一些实施例中,请参照图7,并进一步参照图8和图9,图7为本申请一些实施例提供的调节装置的轴测图,图8为图5所示的A部分的局部放大图,图9为图6所示的B部分的局部放大图。调节装置60可以包括底座61和传动轴62,底座61固定于第二约束件40,传动轴62可转动地安装于底座61,传动轴62被配置为与第二端部521连接并通过转动以调节固定带50的预紧力。
可以理解的是,底座61可以通过紧固件53可拆卸安装于第二约束件40,底座61也可以焊接于第二约束件40或底座61与第二约束件40一体成型,底座61起到承载传动轴62的作用,底座61的实施结构有多种,能够稳定连接并支撑传动轴62即可,传动轴62可通过轴承可转动地安装于底座61。
传动轴62被配置为与第二端部521连接并通过转动以调节固定带50的预紧力,是指通过传动轴62的转动卷绕固定带50,从而使固定带50逐渐绷紧,直至固定带50达到预设的预紧状态。
可以理解的是,传动轴62用于连接与卷绕固定带50,为了保证固定带50的受力的均衡性,传动轴62的轴向可以沿固定带50的宽度方向(即Y方向)延伸。
传动轴62与第二端部521的连接可以通过多种方式实现,比如:在传动轴62上设置限位部,通过限位部与第二端部521快速对接,也可以在电池100组装时通过螺栓等紧固件53将第二端部521固定于传动轴62,或将第二端部521焊接于传动轴62。
在本申请一些实施例中,传动轴62与第二端部521的连接可以通过限位部实现限位连接,限位部的实施方式可以有多种,比如:可以在传动轴62的周面设置第一限位部,在固定带50的第二端部521设置与第一限位部相配合的第二限位部,通过第一限位部与第二限位部的配合实现第二端部521和传动轴62的快速连接,可选地,第一限位部和第二限位部可以采用限位轴和限位孔相配合的结构,具体而言,在第二端部521设置限位孔,在传动轴62的轴面设置凸起的限位轴,或者,在第二端部521设置凸起的限位轴,在传动轴62设置限位孔,将限位轴插入限位孔即可实现固定带50与传动轴62的快速连接。
可以理解的是,限位轴可以为圆柱体结构,也可以为矩形体结构或其他异形结构,当然,限位槽522的形状与限位轴的形状对应适配。
将固定带50缠绕于传动轴62、转动传动轴62即可调节固定带50的预紧力,通过控制转动轴的转动角度即可控制固定带50的预紧程度,便于将固定带50调节至任一预紧状态,可调性、灵活性强,并且,通过转动驱动力调节固定带50的预紧力,作业强度低、可操作性强;同时,固定带50卷绕于传动轴62,传动轴62的受力面积大,受力更加均衡,有效保证调节装置60对固定带50的连接及预紧调节的稳定性。
在一些实施例中,调节装置60还包括齿轮63,齿轮63固定于传动轴62,第二端部521被配置为与齿轮63啮合。
请再一次参照图7和图9,齿轮63固定于传动轴62,即,齿轮63在传动轴62的带动下转动,齿轮63与第二端部521相啮合,即随着齿轮63的转动,第二端部521卷绕于齿轮63且第二端部521与齿轮63的啮合段逐渐增长,固定带50逐步绷 紧,预紧力逐渐加强。
齿轮63可以安装于传动轴62的端部或传动轴62的轴面。示例性的,如图7所示,齿轮63具有中心孔,传动轴62穿过齿轮63的中心孔,齿轮63固定于传动轴62的轴身且与传动轴62同轴,齿轮63位于传动轴62的轴身,这样的结构使得传动轴62对齿轮63起到稳定的支撑作用,有效保证齿轮63受力后的稳定性。
在传动轴62上设置齿轮63,齿轮63的齿对第二端部521起到多点限位作用,从而有效提高固定带50与传动轴62连接的可靠性以及固定带50卷绕在传动轴62上的紧密性;同时,齿轮63的多个齿起到分散受力的作用,降低因固定带50与传动轴62的连接处局部受力过大而使传动轴62与固定带50连接失效的风险,从而有效降低固定带50受力后脱离传动轴62的风险,有利于提高调节装置60的整体性能的稳定性。
请再次参照图6并进一步参照图9,在一些实施例中,第二端部521设置有多个限位槽522,多个限位槽522沿固定带50的延伸方向间隔设置,限位槽522用于供齿轮63的齿部插入。
可以理解的是,随着齿轮63的转动,第二端部521的多个限位槽522与齿轮63的齿部逐一对应,齿轮63的齿部逐一插入与之对应的限位槽522实现齿轮63与第二端部521的啮合,随着齿轮63的转动,齿轮63与第二端部521的啮合段逐渐增长,第二端部521逐步卷绕在齿轮63上,使得固定带50逐步绷紧,预紧力逐步加强。
齿轮63与第二端部521的啮合连接的实施方式有多种,比如,在其他一些实施例中,第二端部521的朝向齿轮63的表面可以具有多个凸出的间隔设置的齿部,使得第二端部521形成类似齿条的结构,第二端部521与齿轮63连接时,使第二端部521的齿部与齿轮63的齿部相啮合。
第二端部521间隔设置多个限位槽522,限位槽522供齿轮63的齿部插入,进行固定带50的预紧力调节时,随着传动轴62的转动,固定带50卷绕于传动轴62的同时,齿轮63的齿对应插入第二端部521的限位槽522,以将固定带50的第二端部521稳定的卷绕定位在传动轴62上。
在一些实施例中,限位槽522沿固定带50的厚度方向贯穿固定带50。
具体而言,固定带50的厚度方向沿第三方向Z延伸,限位槽522沿第三方向Z贯穿固定带50。
可以理解的是,限位槽522沿固定带50的厚度方向贯穿固定带50,即限位槽522呈通孔状,在组装电池100时,可通过限位槽522将第二端部521套设在齿轮63的齿部即可实现第二端部521与传动轴62的连接,连接操作更加便捷;并且,齿轮63的齿部贯穿第二端部521,进一步提高齿轮63对第二端部521连接及限位的稳定性,从而降低固定带50脱离传动轴62的风险;同时,因齿轮63的齿贯穿第二端部521,所以第二端部521可以在齿轮63上层叠缠绕多层,有利于提高固定带50的调节范围。
在本申请的一些实施例中,齿轮63可以具有一定宽度,即齿轮63可以沿传动轴62的轴向延伸一定距离,以保证齿轮63的齿部的抗剪强度,提高齿轮63的齿部的承载性能。
相应的,基于“传动轴62的轴向沿固定带50的宽度方向(即第二方向Y)延伸”的实施形式,限位槽522的宽度方向沿固定带50的宽度方向(即第二方向Y)延伸而形成条形结构,限位槽522的宽度与齿轮63的宽度适配。
在其他一些实施例中,齿轮63还可以采用其他实施结构,比如:可以在传动轴62上形成多个凸出部,每个凸出部沿传动轴62的径向延伸,且多个凸出部绕传动轴62的周向均布,凸出部用于插入限位槽522。其中,每个凸出部可以为圆柱体结构、三角体结构、梯形体结构等。
在一些实施例中,固定带50包括定长段51和调节段52,定长段51的一端固定于第一约束件30,另一端与调节段52连接,限位槽522设置于调节段52。
可以理解的是,调节段52用于与调节装置60连接。其中,定长段51和调节段52可以采用铆接、螺接、焊接、胶粘等方式进行连接。
调节段52和定长段51可以采用相同的材质,比如调节段52和定长段51均可以使用钢材。当然,调节段52和定长段51也可以使用不同的材质,比如,调节段52最终成组后需要缠绕在传动轴62上,则调节段52可以单独使用相较于定长段51而言形变性较好的材料,比如定长段51可以使用钢材,调节段52可以使用塑料,定长段51和调节段52可分别加工然后组装。
固定带50采用定长段51和调节段52连接的结构,便于根据定长段51和调节段52的工艺不同而单独加工,有利于降低加工难度和加工成本;同时,这样的结构便于定长段51和调节段52可根据受力不同以及安装后的结构形状的不同而采用不同的材质加工,有利于进一步提高整体钢带结构的使用性能。
在一些实施例中,传动轴62包括传动轴本体621和限位凸缘622,限位凸缘622形成在传动轴本体621且凸出于传动轴本体621的外周面,限位凸缘622用于限制固定带50沿传动轴62的轴向移动。
可以理解的是,传动轴本体621可转动地安装于底座61,传动轴本体621上可以沿传动轴本体621的轴向间隔设置两个限位凸缘622,固定带50缠绕于传动轴本体621的两个限位凸缘622之间,以限制固定带50沿传动轴本体621的轴向移动。
示例性的,请再次参照图7,传动轴本体621的一端可转动地安装于底座61,传动轴本体621的另一端形成有限位凸缘622,底座61和限位凸缘622共同作用,以限制固定带50沿传动轴本体621的轴向移动。
可以理解的是,基于“齿轮63固定于传动轴62”的实施形式,如果传动轴本体621上沿传动轴本体621的轴向间隔设置两个限位凸缘622,则齿轮63为于两个限位凸缘622之间;如果底座61和一个限位凸缘622共同作用,以限制固定带50沿传动轴本体621的轴向移动,则齿轮63位于限位凸缘622和底座61之间。
限位凸缘622对固定带50卷绕于传动轴62的运动起到一定导向和防呆作用,便于操作者快速准确的将固定带50牵引至传动轴62上的准确位置进行预紧,有利于提高固定带50预紧调节操作的便捷性,同时,限位凸缘622对固定带50在传动轴62上的位置起到限位作用,避免预紧过程中固定带50产生偏位。
在一些实施例中,传动轴62的一端设置有操作部64,操作部64用于连接转动驱动源。
转动驱动源是指为传动轴的转动提供转动驱动的力的来源,转动驱动源可以是电动驱动机构也可以是操作员通过工具手动驱动,可以理解的是,采用不同的转动驱动源或采用不同的作业工具,其操作部的实施结构也不同,比如:传动轴可以通过小型电机驱动转动,则传动轴的操作部应与小型电机的输出端适配。
示例性的,如图9所示,操作部64可以为与扳手适配的类似于螺栓帽的结构,操作部64可以呈外六角形、内六角形或其他能与扳手或其他工具配合的常规结构,进行电池100组装时,操作员使用操作工具作用于操作部64进行拧转,从而带动传动轴62转动。
操作部64的设置便于连接对应的转动驱动源,转动驱动源作用于操作部64带动传动轴62转动。
在一些实施例中,调节装置60还包括止回机构65,止回机构65被配置为允许传动轴62沿张紧固定带50的方向转动,并限制传动轴62沿放松固定带50的方向转动。
可以理解的是,传动轴62可转动的安装于底座61,则传动轴62可以绕其自身的中心轴线正反向转动,固定带50卷绕于传动轴62,如果传动轴62绕其中心轴线正向转动能够张紧固定带50,那么传动轴62绕其中心轴线反向转动能够放松固定带50,被放松的固定带50会失去预紧力,无法达到抑制电池100变形的目的,止回机构65的作用在于限制传动轴62的转动方向,即允许传动轴62正向转动(张紧固定带50),并限制传动轴62反向转动(放松固定带50),从而起到保持固定带50预紧力 的作用。
在调节装置60设置止回机构65,通过限制传动轴62的转动方向对缠绕在传动轴62上的固定带50起到防松作用,止回机构65的设置可有效防止电池100在使用过程中固定带50因受到膨胀力而自动返松,并且,止回机构65的设计使得在对固定带50进行预紧力调节时可间歇性转动传动轴62,撤去转动驱动源后传动轴62可以停在当前角度,有效保证了预紧调节操作、尤其是人工调节操作的便捷性、可控性。
在一些实施例中,请再次参照图7和图8,止回机构65可以包括棘轮651和棘爪652,棘轮651固定于传动轴62,棘轮651的中心轴线与传动轴62的中心轴线重合,棘爪652安装于底座61,棘爪652与棘轮651啮合,棘爪652被配置为允许棘轮651单向转动。
可以理解的是,棘轮651与传动轴62同轴连接,棘轮651可以随传动轴62同步转动。棘爪652可以通过转轴654可转动地安装于底座61,转轴654的转动轴心线与传动轴62的转动轴心线平行,棘爪652与棘轮651啮合。
在棘轮651正向旋转时,棘轮651的齿部推动棘爪652,棘爪652受力相较于转轴654产生旋转偏位,从而脱离与棘轮651的啮合关系,棘轮651得以转动,在此过程中,向棘爪652施力的棘轮651的齿部随棘轮651的旋转而产生位移,并最终与棘爪652脱离,棘爪652失去受力后在复位作用力下复位,重新与棘轮651的其他齿部啮合。而当棘轮651预反向旋转时,棘轮651的齿部结构与棘爪652结构相互制约限位自锁,以限制棘轮651反向转动。
可以理解的是,“棘轮651正向旋转”、“棘轮651反向旋转”应做广义理解,正向反向的引入仅为说明棘轮651绕其自身的中心轴线旋转时的旋转方向的区别,如果将正向旋转理解为顺时针旋转,则反向旋转即为逆时针旋转,正向旋转、反向旋转在实际应用结构中可以互换。
在本申请实施例中,棘轮651与传动轴62连接,且包括棘轮651棘爪652的止回机构65用于允许传动轴62沿张紧固定带50的方向转动,并限制传动轴62沿放松固定带50的方向转动。所以可以理解的是,传动轴62沿张紧固定带50的方向转动,带动棘轮651沿上述的正向旋转,传动轴62沿放松固定带50的方向转动,带动棘轮651沿上述的反向旋转。
止回机构65采用棘轮651棘爪652结构,其结构成熟、性能稳定,可有效发挥止回机构65对传动轴62的转动方向的限制作用。
在其他一些实施例中,止回机构65还可以为其他结构,比如止回机构可以包括齿条、中转齿轮和止动套,将中转齿轮固定在传动轴62上,中转齿轮的中心轴线与传动轴62的中心轴线重合,止动套固定安装在底座61上,齿条穿设于制动套中且齿条的齿部与中转齿轮啮合,同时,齿条上设置有斜齿,斜齿的延伸方向与齿条的齿部延伸方向一致,止动套内设置有弹性片,弹性片抵接于斜齿且与斜齿啮合。
其中,止动套和斜齿的配合关系参照常规技术中的扎带机构即可,即,扎带上沿扎带的长度延伸方向并列设置多排斜齿,扎带的一端连接有止动套,止动套内设置有可与斜齿啮合的弹性片,将扎带远离止动套的一端穿入止动套不断拉紧,即可使扎带形成的闭环的限位空间不断缩小,因为斜齿和弹性片啮合,扎带无法反向抽出止动套。
用作止回机构时,中转齿轮与传动轴62同轴连接,传动轴62带动中转齿轮同步转动,齿条与中转齿轮啮合,则中转齿轮可以带动齿条直线移动,又因中转齿轮穿设于止动套中,且齿条上的斜齿与止动套内的弹性片啮合,则止动套可以控制齿条的直线移动方向,仅允许齿条单向移动。
在应用到本申请实施例时,传动轴62沿张紧固定带50的方向转动时,带动中转齿轮旋转,中转齿轮带动齿条直线移动,此时止动套允许齿条直线移动,而当传动轴62预沿放松所述固定带50的方向转动时,中转齿轮预反向旋转,且向齿条施加作用力,驱动齿条反向直线移动,此时,齿条上的斜齿与止动套的弹性片啮合而阻止齿条反向移动,齿条无法反向直线移动,则中转齿轮无法旋转,即可阻止传动轴62 沿放松所述固定带50的方向转动。
在又一些实施例中,止回机构还可以为单向轴承,传动轴通过单向轴承转动设置在底座上,示例性的,单向轴承具有外圈和内圈,底座与单向轴承的外圈固定连接,传动轴伸入单向轴承的内圈与单向轴承同轴连接即可,当然,单向轴承的可旋转方向应该与传动轴沿张紧固定带的转动方向一致。
在一些实施例中,所述止回机构65还包括弹性件653,所述弹性件653用于向所述棘爪652施加弹性力,以使所述棘爪652保持与所述棘轮651接触。
可选地,弹性件653可以是压缩弹簧、片簧、扭簧等结构,示例性的,请继续参照图7和图8,弹性件653包括压缩弹簧,压缩弹簧的一端与底座61连接,另一端与棘爪652连接,压缩弹簧对棘爪652施加弹性拉力,使棘爪652始终保持接触棘轮651。
而在其他一些实施例中,弹性件653也可以使用类似弓形的片簧,片簧的一端固定于底座61,另一端形成自由端,片簧的凸出的部分与棘爪652抵接,片簧对凸出部给与弹性压力,使棘爪652始终保持接触棘轮651。
在一些实施例中,第一端部511可以通过紧固件53与第一约束件30连接。
请参照图5并进一步参照图10,图10为图5所示的C部分的局部放大图。紧固件53可以使用螺栓、自攻螺钉、销、铆钉、焊钉等常规的紧固结构。示例性的,第一端部511通过螺栓与第一约束件30连接,即,第一端部511和第一约束件30均设置有安装孔,螺栓通过第一端部511和第一约束件30的安装孔将第一端部511连接于第一约束件30。
可选地,为了进一步提高第一端部511与第一约束件30连接的稳定性,第一端部511可以通过多个紧固件53与第一约束件30连接。
示例性的,如图10所示,第一端部511通过四个螺栓与第一约束件30连接,四个螺栓沿垂直于固定带50的延伸方向(即第二方向Y)间隔分布,这样的连接方式使得固定带50在其自身的宽度方向(即第二方向Y)受力更加均匀,且多个螺栓抗剪性能更强,保证了第一端部511与第一约束件30连接的牢固性和稳定性。
固定带50的第一端部511通过紧固件53与第一约束件30连接,方便固定带50和第一约束件30的生产制造且方便电池100的组装,同时,可以根据固定带50受力情况通过灵活配置紧固件53的类型、数量而提高固定带50与第一约束件30连接的可靠性,便于保证固定带50与第一约束件30连接的稳定性。
在一些实施例中,固定带50和调节装置60均设置有多个,多个固定带50沿垂直于固定带50的延伸方向间隔分布,固定带50和调节装置60一一对应。
具体而言,固定带50可以为两个、三个、四个、五个等。示例性的,如图5所示,固定带50设置有五个,五个固定带50沿垂直于固定带50的延伸方向(即第二方向Y)均布于第一约束件30。
沿垂直于固定带50的延伸方向布置多个固定带50和与固定带50一一对应的调节装置60,以对第一约束件30和第二约束件40给与多点位预紧力,有效提高施力覆盖范围,从而进一步提高固定带50与第一约束件30和第二约束件40对电池100的膨胀的抑制效果;更为重要的是,电池100膨胀时,第一约束件30和第二约束件40的沿垂直于固定带50的延伸方向的不同位置的受力也不同,设置多个预紧力可调的固定带50,可以根据固定带50安装位置的不同而给与各个固定带50不同的预紧力,从而有利于提高第一约束件30和第二约束件40对电池单体11的膨胀力的抵消度,有利于降低第一约束件30和第二约束件40的受力变形度,从而降低电池100的变形量,延长电池100的使用寿命。
在一些实施例中,第一约束件30和第二约束件40沿第一方向间隔设置,多个电池单体11沿第一方向层叠布置。
可以理解的是,为了提高第一约束件30和第二约束件40对电池单体11组的膨胀力的对抗性,第一方向可以为电池单体组10的碰撞力方向或主要膨胀力方向。
第一约束件30和第二约束件40沿第一方向间隔设置且多个电池单体11沿第一方向层叠布置在第一约束件30和第二约束件40之间,这样的结构使得第一约束件30和第二约束件40受固定带50预紧力的受力方向和受电池单体组10的多个电池单体11的膨胀力的受力方向相同,以更好的保证第一约束件30、第二约束件40和固定带50对电池100膨胀的抑制效果。
在一些实施例中,电池100可以包括多个电池单体组10,多个电池单体组10沿第二方向并排排布于第一约束件30和第二约束件40之间,第二方向与第一方向垂直。
请再一次参照图2,每个电池单体组10包括多个电池单体11,也就是说,第一约束件30和第二约束件40之间可以排布多列电池单体11,每列电池单体11包括多个电池单体11,每列的多个电池单体11沿第一方向层叠布置,多列电池单体11沿第二方向并排排布,第一方向与第二方向垂直。
在第一约束件30和第二约束件40之间沿第二方向并排设置多个电池单体组10,有利于提高电池100的能量密度。
在又一些实施例中,电池100还可以包括:箱体20和多个梁23,多个梁23间隔设置于箱体20内且与箱体20固定连接,相邻两个梁23之间形成一个容纳腔;其中,电池单体组10设置于容纳腔内,第一约束件30为相邻两个梁中的一者,第二约束件40为相邻两个梁中的另一者。
请参照图11,图11为本申请又一些实施例提供的电池100的爆炸图,箱体20可以包括第一箱体21和第二箱体22,第一箱体21和第二箱体22相互盖合后形成电池腔。其中,第一箱体21和第二箱体22的形状可以根据多个电池单体组的形状而定,第一箱体21和第二箱体22可以均具有一个开口。例如,第一箱体21和第二箱体22均可以为中空长方体且各自只有一个面为开口面,第一箱体21和第二箱体22的开口相对设置,并且第一箱体21和第二箱体22相互扣合形成具有封闭腔室的箱体20。多个电池单体11相互并联或串联或混联组合后置于第一箱体21和第二箱体22扣合后形成的箱体20内。可以理解的是,箱体20内可以直接放置由多个电池单体11形成的一个电池单体组10,也可以在箱体20内放置多个电池单体组10组成电池100。
可以理解的是,箱体20内可以设置两个梁23,两个梁23可以设置于箱体20内的相对两端,两个梁23之间形成一个容纳腔。当然,箱体20内也可以间隔设置三个、四个、五个或更多个梁23,每相邻两个梁23之间形成一个容纳腔,即箱体20的电池100腔可以由多个梁23分隔为多个容纳腔。
其中,箱体20的梁23可以与箱体20的侧壁一体成型,也可以单独设置并与箱体20采用焊接方向连接或采用紧固件53可拆卸连接。
示例性的,如图11所示,箱体20内固定有沿箱体20的长度方向彼此相对的前梁231和后梁232,前梁231和后梁232之间形成容纳腔,电池单体组10的多个电池单体11沿箱体20的长度方向层叠布置于容纳内,固定带50的第一端部511连接于前梁231,调节装置60安装于后梁232,即第一约束件30为前梁231,第二约束件40为后梁232。
箱体20对电池100的结构起到容纳和保护作用,箱体20内设置的梁23用于限位和紧固电池单体11,而将固定带50和调节装置60直接安装于箱体20的梁23,能够有效提高电池100的结构整合性,进而提高整体电池100的能量密度;另一方面箱体20的梁23结构刚性强、抗形变性能好、承压力强,有利于进一步提高对电池单体11的膨胀力的抵消量,减少电池100的变形量。
在一些实施例中,电池100还可以包括:电池模组,电池模组包括电池单体组10和两个端板,两个端板设置于电池单体组10的相对两侧;其中,第一约束件30为两个端板中的一者,第二约束件40为两个端板中的另一者。
如前所述,多个电池单体11之间可以串联、并联或者混联直接组成电池100,也可以先串联、并联或者混联组成电池单体组10,多个电池单体组10再串联、并联或者混联组成电池100。在常规设置中,电池100可以包括一个或多个电池模组, 而电池模组包括电池单体组10和两个端板,两个端板之间形成限位腔而将电池单体组10限位在限位腔内。
可选地,电池模组还可以包括两个侧板(图中未示出),两个端板间隔设置,两个侧板连接两个端板,两个端板和两个侧板合围形成限位腔,电池单体组10设置在限位腔内。
在电池模组中,端板对多个电池单体11起到限位紧固作用,本实施例利用电池模组的端板固定固定带50和调节装置60,无需单独加装第一约束件30和第二约束件40,降低电池100的空间占用率且有效节约实施成本、提高固定带50和调节装置60安装实施的便捷性。
根据本申请的一些实施例,本申请还提供了一种用电装置,包括以上任一方案所述的电池100,电池100用于为用电装置提供电能。
其中,用电装置可以是前述任一应用电池100的设备或系统。
根据本申请的一些实施例,参见图2至图11,本申请提供了一种电池100,电池100包括间隔设置的第一约束件30和第二约束件40、电池单体组10、固定带50和调节装置60,电池单体组10包括多个电池单体11,多个电池单体11层叠布置于第一约束件30和第二约束件40之间;固定带50包括第一端部511和第二端部521,第一端部511通过四个螺栓固定于第一约束件30,四个螺栓沿垂直于固定带50的延伸方向间隔分布,第二端部521沿固定带50的延伸方向间隔分布有多个限位槽522,限位槽522沿固定带50的厚度方向贯穿固定带50。
调节装置60安装于第二约束件40,调节装置60包括底座61、可转动地安装在底座61上的传动轴62、齿轮63和止回机构65,底座61通过螺栓固定于第二约束件40,齿轮63固定于传动轴62,第二端部521的限位槽522用于供齿轮63的齿部插入。
止回机构65包括棘轮651、棘爪652和压缩弹簧,棘轮651同轴固定于传动轴62,棘爪652安装于底座61,棘爪652与棘轮651啮合,压缩弹簧的一端与底座61连接,另一端与棘爪652连接,压缩弹簧压缩弹簧对棘爪652施加弹性拉力,使棘爪652始终保持接触棘轮651。
将固定带50的第二端部521牵引至传动轴62,并将传动轴62上的齿轮63的齿部插入第二端部521的限位槽522,使得固定带50与传动轴62连接,通过转动驱动源驱动传动轴62沿张紧固定带50的方向转动,齿轮63的齿部依次插入第二端部521的限位槽522,第二端部521逐步卷绕于传动轴62,固定带50逐渐绷紧,将固定带50调节至预设预紧程度后停止转动传动轴62即可,棘轮651棘爪652结构限制传动轴62沿放松固定带50的方向转动,传动轴62停止转动后,第二端部521连接并卷绕于传动轴62,固定带50处于绷紧状态。
本申请实施例还提供了一种电池100的制造方法,请参照图12,图12为本申请一些实施例提供的电池100的制造方法的流程示意图,该制造方法包括:
S100:提供第一约束件30和第二约束件40,将第一约束件30和第二约束件40间隔设置;
S200:提供电池单体组10,电池单体组10包括多个电池单体11,将多个电池单体11层叠布置于第一约束件30和第二约束件40之间;
S300:提供固定带50,固定带50包括第一端部511和第二端部521,将第一端部511固定于第一约束件30;
S400:提供调节装置60,将调节装置60安装于第二约束件40,将第二端部521连接至调节装置60,通过调节装置60调节固定带50的预紧力。
需要说明的是,通过上述实施例提供的制造方法制造的电池100的相关结构,可参见前述各实施例提供的电池100,在此不再赘述。
本申请实施例还提供一种电池100的制造设备2000,请参照图13,图13为本申请一些实施例提供的电池100的制造设备2000的示意性框图,制造设备2000包括提供模块和组装模块,提供模块可以包括第一提供装置2100、第二提供装置 2200、第三提供装置2300,第四提供装置2400,组装模块可以包括第一组装装置2500、第二组装装置2600和第三组装装置2700。
第一提供装置2100用于提供第一约束件30和第二约束件40,第一约束件30和第二约束件40间隔设置;第二提供装置2200用于提供电池单体11;第三提供装置2300用于提供固定带50,第四提供装置2400用于提供调节装置60,固定带50包括第一端部511和第二端部521。第一组装装置2500用于将多个电池单体11层叠布置于第一约束件30和第二约束件40之间。第二组装装置2600用于将第一端部511固定于第一约束件30,并将调节装置60安装于第二约束件40。第三组装装置2700用于将第二端部521连接至调节装置60,通过调节装置60调节固定带50的预紧力。
需要说明的是,通过上述实施例提供的制造设备2000制造的电池100的相关结构,可参见前述各实施例提供的电池100,在此不再赘述。
需要说明的是,在不冲突的情况下,本申请中的实施例中的特征可以相互结合。
虽然已经参考优选实施例对本申请进行了描述,但在不脱离本申请的范围的情况下,可以对其进行各种改进并且可以用等效物替换其中的部件。尤其是,只要不存在结构冲突,各个实施例中所提到的各项技术特征均可以任意方式组合起来。本申请并不局限于文中公开的特定实施例,而是包括落入权利要求的范围内的所有技术方案。

Claims (20)

  1. 一种电池,包括:
    间隔设置的第一约束件和第二约束件;
    电池单体组,包括多个电池单体,多个所述电池单体层叠布置于所述第一约束件和所述第二约束件之间;
    固定带,包括第一端部和第二端部,所述第一端部固定于所述第一约束件;以及
    调节装置,安装于所述第二约束件,所述调节装置用于与所述第二端部连接并调节所述固定带的预紧力。
  2. 根据权利要求1所述的电池,其中,所述调节装置包括底座和传动轴,所述底座固定于所述第二约束件,所述传动轴可转动地安装于所述底座,所述传动轴被配置为与所述第二端部连接并通过转动以调节所述固定带的预紧力。
  3. 根据权利要求2所述的电池,其中,所述调节装置还包括齿轮,所述齿轮固定于所述传动轴,所述第二端部被配置为与所述齿轮啮合。
  4. 根据权利要求3所述的电池,其中,所述第二端部设置有多个限位槽,所述多个限位槽沿所述固定带的延伸方向间隔设置,所述限位槽用于供所述齿轮的齿部插入。
  5. 根据权利要求4所述的电池,其中,所述限位槽沿所述固定带的厚度方向贯穿所述固定带。
  6. 根据权利要求4或5所述的电池,其中,所述固定带包括定长段和调节段,所述定长段的一端固定于所述第一约束件,另一端与所述调节段连接,所述限位槽设置于所述调节段。
  7. 根据权利要求2至6任一项所述的电池,其中,所述传动轴包括:
    传动轴本体;
    限位凸缘,形成在所述传动轴本体且凸出于所述传动轴本体的外周面,所述限位凸缘用于限制所述固定带沿所述传动轴的轴向移动。
  8. 根据权利要求2至7任一项所述的电池,其中,所述传动轴的一端设置有操作部,所述操作部用于连接转动驱动源。
  9. 根据权利要求2至8任一项所述的电池,其中,所述调节装置还包括:
    止回机构,所述止回机构被配置为允许所述传动轴沿张紧所述固定带的方向转动,并限制所述传动轴沿放松所述固定带的方向转动。
  10. 根据权利要求9所述的电池,其中,所述止回机构包括:
    棘轮,固定于所述传动轴,所述棘轮的中心轴线与所述传动轴的中心轴线重合;
    棘爪,安装于所述底座,所述棘爪与所述棘轮啮合,所述棘爪被配置为允许所述棘轮单向转动。
  11. 根据权利要求10所述的电池,其中,所述止回机构还包括:
    弹性件,所述弹性件用于向所述棘爪施加弹性力,以使所述棘爪保持与所述棘轮接触。
  12. 根据权利要求1至11任一项所述的电池,其中,所述第一端部通过紧固件与所述第一约束件连接。
  13. 根据权利要求1至12任一项所述的电池,其中,所述固定带和所述调节装置均设置有多个,多个所述固定带沿垂直于所述固定带的延伸方向间隔分布,所述固定带和所述调节装置一一对应。
  14. 根据权利要求1至13任一项所述的电池,其中,所述第一约束件和所述第二约束件沿第一方向间隔设置,所述多个电池单体沿所述第一方向层叠布置。
  15. 根据权利要求14所述的电池,其中,所述电池包括多个电池单体组,多个所述电池单体组沿第二方向并排排布于所述第一约束件和所述第二约束件之间,所述第二方向与所述第一方向垂直。
  16. 根据权利要求1至15任一项所述的电池,其中,所述电池还包括:
    箱体;
    多个梁,间隔设置于所述箱体内且与所述箱体固定连接,相邻两个所述梁之间形成一个容纳腔;
    其中,所述电池单体组设置于所述容纳腔内,所述第一约束件为所述相邻两个梁中的一者,所述第二约束件为所述相邻两个梁中的另一者。
  17. 根据权利要求1至15任一项所述的电池,其中,所述电池还包括:
    电池模组,所述电池模组包括所述电池单体组和两个端板,两个所述端板设置于所述电池单体组的相对两侧;
    其中,所述第一约束件为所述两个端板中的一者,所述第二约束件为所述两个端板中的另一者。
  18. 一种用电装置,包括如权利要求1-17中任一项所述的电池,所述电池用于提供电能。
  19. 一种电池的制造方法,包括:
    提供第一约束件和第二约束件,将所述第一约束件和所述第二约束件间隔设置;
    提供电池单体组,所述电池单体组包括多个电池单体,将多个所述电池单体层叠布置于所述第一约束件和所述第二约束件之间;
    提供固定带,所述固定带包括第一端部和第二端部,将所述第一端部固定于所述第一约束件;
    提供调节装置,将所述调节装置安装于所述第二约束件,将所述第二端部连接至所述调节装置,通过所述调节装置调节所述固定带的预紧力。
  20. 一种电池的制造设备,包括:
    提供模块,用于提供第一约束件和第二约束件、提供电池单体组、提供固定带及提供调节装置,所述第一约束件和所述第二约束件间隔设置,所述电池单体组包括多个电池单体,所述固定带包括第一端部和第二端部;
    组装模块,用于将多个所述电池单体层叠布置于所述第一约束件和所述第二约束件之间,将所述第一端部固定于所述第一约束件,将所述调节装置安装于所述第二约束件,将所述第二端部连接至所述调节装置,通过所述调节装置调节所述固定带的预紧力。
PCT/CN2022/078069 2022-02-25 2022-02-25 电池单体、电池、用电设备、电池单体的制造方法及设备 WO2023159508A1 (zh)

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CN105870484A (zh) * 2016-05-06 2016-08-17 同济大学 一种用于车用燃料电池电堆捆扎的装置
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