化妆镜（小猫）

Intelligence thing networking sun shade

... 本实用新型涉及一种智能物联网遮阳伞，包括伞柄、伞顶和控制系统，所述伞柄上套有主体外壳，所述主体外壳上方设有灯罩，所述主体外壳侧边设有感应开关和显示屏，所述主体外壳底部设有扬声器、摄像头、充电出入接口和USB 5V输出接口，所述伞顶包括遮阳布，所述遮阳布上设有可折叠太阳能电池组和顶部有风力发电、检测装置，通过可折叠太阳能电池组和风力发电装置进行发电；通过顶部风力发电装置同时检测风力大小变化；通过设置感应开关和显示屏，用于控制和显示产品状态；通过设置扬声器和麦克风、摄像头和USB 5V输出接口，功能多样化、设计更人性化，本实用新型设计合理，可大规模推广。 ...

BATTERY STRING, BATTERY ASSEMBLY, AND FABRICATION APPARATUS AND FABRICATION METHOD FOR BATTERY STRING

Provided in the embodiments of the present disclosure are a battery string, a battery assembly, a fabrication apparatus and fabrication method for the battery string, and a fabrication apparatus and fabrication method for the battery assembly. The battery string comprises: at least two battery sheets (11,12), the at least two battery sheets (11,12) comprising a first battery sheet (11) and a second battery sheet (12) that are adjacent, and the front and back surfaces of each battery sheet among the at least two battery sheets (11,12) being provided with gate lines. The gate lines on the front surface of the first battery sheet (11) and the gate lines of the back surface of the second battery sheet (12) are connected by means of solder strips (20). The first battery sheet (11) and the second battery sheet (12) have an overlapping region (30), the overlapping region (30) is provided with a cushion pad (40) that covers at least one side surface of the solder strips (20) located within the ...

VOICE CALL METHOD AND APPARATUS

A voice call method and apparatus. The method comprises: receiving a voice call request sent by a calling terminal, wherein the voice call request carries an identifier of a called terminal (201); acquiring first voice coding information about the calling terminal and second voice coding information about the called terminal (202); receiving voice call information sent by the calling terminal or the called terminal (203); according to the first voice coding information and the second voice coding information, converting the voice call information into voice call information supported by another terminal (204); and sending the converted voice call information to another terminal (205). The problem in the related art that a voice call client cannot make a voice call during the period of updating the voice call client when a new coding type appears is solved.

Textile processing equipment

... 本实用新型公开一种纺织品加工设备，包括纺织品布筒、烘筒、浆槽、轧车、拉幅定型机以及收卷成型机，纺织品布筒一侧为烘筒，烘筒一侧为浆槽，浆槽上部为轧车，轧车一侧为印花机头，印花机头一侧为拉幅定型机，拉幅定型机一侧为收卷成型机。相对现有技术，本实用新型能够实现对布料的染色、上浆、滴塑(或印花)和烘干的一步成型，提高了工作效率，降低了对能源的消耗和人工的投入，在市场竞争中更具优势，操作过程简单流畅，降低了成本，是对传统工艺的一次革新，同时也减少了对环境的污染和对资源的浪费现象，能够满足市场对低档布料的需求，应用前景广阔，具有极大的经济价值。 ...

Cable stranding machine convenient for adjusting tightness

The invention relates to the technical field of cable stranding machines, and discloses a cable stranding machine convenient for tightness adjustment, which comprises a bottom plate, supporting columns are fixedly connected to four corners of the bottom of the bottom plate, and supporting plates are fixedly connected to the front and rear of the left side of the top of the bottom plate. A sixth through groove penetrating front and back is formed in the center of the interior of each supporting plate, a third rotating rod is rotationally connected to the interior of each sixth through groove through a first bearing, a shell is fixedly connected to the front surface of the front supporting plate, and a first driving motor is fixedly installed in each shell. According to the cable stranding machine, a cable can be uniformly and effectively wound on the outer surface of the I-shaped capstan after stranding processing is completed, so that the winding area of the outer surface of the I-shaped ...

Functional electrolyte suitable for aluminum-plated composite film current collector and lithium ion battery

The invention relates to the technical field of battery electrolytes, in particular to a functional electrolyte suitable for an aluminum-plated composite film current collector and a lithium ion battery, the functional electrolyte comprises a basic electrolyte, and/or a lithium salt and/or an additive, the basic electrolyte is prepared by the following method: firstly, uniformly mixing ethylene carbonate and ethyl methyl carbonate in a glove box, and then, adding an additive into the glove box; and adding vinylene carbonate and fluoroethylene carbonate into the mixture, and uniformly mixing to obtain the product. A positive pole piece and a negative pole piece are manufactured, and then the lithium ion battery is manufactured through rolling, die cutting, drying, winding, assembling, functional electrolyte injection, sealing, formation and secondary sealing in sequence. The formula of the electrolyte is adjusted, so that the HF acid content in a battery system is at an extremely low level ...

Storage battery internal resistance on-line monitoring device, system and method

The invention discloses a storage battery internal resistance on-line monitoring device, system and method. The device is characterized in that the output end of a Venturi bridge oscillation circuit is used for being electrically connected with a to-be-detected battery, an automatic gain control circuit is electrically connected with a negative feedback input end and an output end, and a micro-control unit is electrically connected with the automatic gain control circuit; the automatic gain control circuit is used for adjusting the amplitude of the digital frequency synthesis signal to obtain a control signal; the Venturi bridge oscillation circuit is used for generating a sine wave signal according to the control signal; the micro-control unit is also used for acquiring an output signal of the to-be-detected battery and obtaining voltage data, current data and internal resistance data of the to-be-detected battery according to the output signal; the automatic gain control circuit is also ...

Photovoltaic module EL detection system and test method thereof

The invention relates to a photovoltaic module EL detection system and a test method thereof, which belong to the technical field of photovoltaic module manufacturing, and solve the problems that an EL detection system in the prior art cannot continuously test photovoltaic modules with different sizes, and EL pictures are poor due to manual adjustment of an EL camera. The system comprises an EL test unit (10) and a measuring unit (40), the measuring unit (40) is used for obtaining the length of a to-be-tested piece (50), the EL test unit (10) comprises an EL camera (13) and a PC control unit (14), and the PC control unit (14) adjusts the position of the EL camera (13) according to the length of the to-be-tested piece (50). The position of the EL camera is automatically adjusted by obtaining the length of the to-be-tested piece, photovoltaic modules of different sizes can be continuously tested, the position of the EL camera does not need to be manually adjusted, and meanwhile the situation ...

Flame-retardant fireproof self-temperature-measuring low-voltage cable

The invention discloses a flame-retardant fireproof type self-temperature-measuring low-voltage cable, and particularly relates to the field of cables, the cable comprises a fixing piece, a cable core is fixedly mounted in the fixing piece, and a flame-retardant layer is arranged on the outer side surface of the cable core. By arranging the temperature sensing bag, compared with the prior art, after the temperature sensing bag is influenced by temperature changes and drives a first electric contact to move and be powered on, a first electromagnet pushes a first magnetic block according to the principle that like poles repel, the first magnetic block drives an extrusion block to extrude an extrusion bag, and meanwhile a piezoelectric crystal vibrates after being powered on; a refrigerant filled in an extrusion bag can be better spilled out through through holes in the surface of a plugging block to be combined with heat dissipation liquid in a heat dissipation layer, a second electromagnet ...

Preparation method of electrode material, electrode and battery

The invention provides a preparation method of an electrode material, which comprises the following steps: mixing enzymolysis residues, a binder and graphite particles to obtain an intermediate mixture; and carbonizing the intermediate mixture to obtain the electrode material. According to the preparation method of the electrode material provided by the invention, the enzymolysis residue is selected as the coating agent, and the enzymolysis residue material is rich in resource and low in price, so that the preparation cost of the electrode material can be effectively reduced. Moreover, the content of volatile components in the enzymolysis residues is low, agglomeration is not prone to occurring in the pyrolysis process during carbonization treatment, the formed electrode material is few in pores and small in specific surface area, and the cycle performance of the electrode material can be improved. In addition, the content of nitrogen in the enzymolysis residues is high, nitrogen-doped ...

Battery winding core, manufacturing method of battery winding core and secondary battery

The invention provides a battery roll core, a manufacturing method of the battery roll core and a secondary battery. The battery roll core comprises a positive pole piece, a negative pole piece and a diaphragm, the diaphragm is positioned between the positive pole piece and the negative pole piece, and the battery roll core further comprises a stress release layer positioned between the positive pole piece and the negative pole piece. The stress release layer can provide a space for deformation of the electrode plate, so that wrinkles of the electrode plate and deformation of the battery are avoided. In addition, the method of arranging the stress buffer layer between the electrode plates solves the problem of deformation of the electrode plates and has the advantage of low cost.

Multi -functional ice -melt snow road surface test device

... 本实用新型公开了一种多功能融冰/雪路面试验装置，其特征是设置用于构建试验环境的密闭的箱体；在箱体的内部设置试验平台，被测试件放置在试验平台上，在被测试件的顶部放置冰/雪槽；加冰/雪管道用于向冰/雪槽中入投冰/雪；用于模拟融冰雪路面的被测试件分层设置为：下层路面层、中部加热层和上层路面层；中部加热层为混凝土预制件，并成阵列分布各孔道，在各孔道的孔壁上粘接有应变片；在设定位置的孔道中置入加热元件形成加热孔，在未置入有加热元件的孔道中置入混凝土棒将孔道填实。利用本实用新型能够针对不同工况条件、路面结构，及不同融雪化冰方式进行融雪化冰过程的模拟试验，获得融冰雪效率、速率以及疲劳寿命，通过对于融冰雪路面的评价获得最优方案，使其能够得到更好的应用。 ...

Method for solving wrinkles of negative plate

The invention relates to the technical field of battery manufacturing, in particular to a method for solving wrinkles of a negative plate, which comprises the following steps of: shortening a variable-length support plate to a length suitable for the interior of a roll core through low-temperature treatment; during winding, the shortened variable-length supporting plate is used as a winding core lining to be arranged in the winding core; after winding, the variable length support plate is restored to room temperature, the length of which is restored to the initial length. The variable-length supporting plates are introduced into the roll core, it is guaranteed that the inner roll core is evenly stressed, and wrinkles are avoided. The length change of the variable-length supporting plate at low temperature is obvious, and the length change at room temperature and high temperature can be neglected. The supporting plate is placed in the roll core at low temperature, and the length of the supporting ...

Anti-corrosion fire-resistant cable and processing technology thereof

The invention relates to the technical field of cables, and discloses an anti-corrosion fire-resistant cable which comprises an outer protective layer and a bottom shell, three insulation shielding layers are installed in the outer protective layer, tangent planes of the three insulation shielding layers are in contact, an XLPE insulation layer is fixedly connected in each insulation shielding layer, and the XLPE insulation layers are arranged in the bottom shell. A conductor shielding layer is sleeved with the XLPE insulating layer, a conductor is installed in the conductor shielding layer, and the bottom shell is pasted and fixed to the bottom of the outer protective layer. In the process that the cable is laid on the ground, the bottom shell makes contact with the ground, when the cable is extruded by an external object, the bottom shell deforms, the supporting block, the round rod and the disc move downwards, the spring is compressed, the bottom end of the disc extrudes the piezoelectric ...

Design method and device of digital integrated circuit, electronic equipment and storage medium

The invention discloses a design method and device of a digital integrated circuit, electronic equipment and a storage medium. The design method of the digital integrated circuit comprises the following steps: acquiring a first register transfer level description file; determining a distinguishing part in the first register transfer level description file based on the first register transfer level description file and the second register transfer level description file; analyzing the discriminating portion to determine a boundary signal located at a boundary of the replacement region determined by the discriminating portion; based on the boundary signal, combining the distinguishing part, and creating an engineering modification module corresponding to the distinguishing part; and performing engineering modification on the second back-end netlist corresponding to the second register transfer level description file based on an engineering modification module to obtain a first back-end netlist ...

An intelligent sunshade

... 本实用新型涉及一种智能遮阳棚，包括主机和控制系统，所述主机内设有控制器主板，所述主机侧边设有马达驱动装置和灯光输出组，所述控制系统包括蓝牙模块、WiFi模块和感应模块，且该控制系统与所述控制器主板和马达驱动装置连接，所述主机顶部设有太阳能电池，所述主机内设有扬声器喇叭，通过设置蓝牙模块、WiFi模块和感应模块，提高功能多样化；通过设置灯光输出组，用于照明；通过设置马达驱动装置，可电动开关遮阳棚；通过设置太阳能电池和扬声器喇叭，可利用太阳能储电和进行声音外放，本实用新型设计合理，可大规模推广。 ...

Dust removal drainage macrovoid bituminous paving who contains graded broken stone composite bed

... 本实用新型公开了种含级配碎石复合层的除尘排水大孔隙沥青路面，其特征是设置路面结构自下而上依次为下面层、中面层、防水抗裂层、除尘复合层和上面层；除尘复合层是在固定层中埋设有除尘装置；除尘装置是呈网格排布在级配碎石固定层中的除尘管路，在除尘管路的管壁上开设有通孔；通过除尘管路上的通孔可以对上面层进行由下而上的反冲洗；或是通过除尘管路上的通孔对上面层中的渗水进行负压抽排。本实用新型可以有效的恢复和保持大孔隙沥青路面的排水降噪和抗滑能力，延长路面的使用寿命，提高路面排水的效率，提高路面积雪融化效率，降低路面的整体温度，保证行车安全，使行车的环境达到最优化。 ...

Secondary battery and separator for secondary battery

The present invention provides a secondary battery and a separator for a secondary battery. The secondary battery comprises: a base film; the ceramic layer is positioned on at least one side of the base film; the surface, deviating from the base film, of the ceramic layer on at least one side of the base film is of a concave-convex structure. A gap is formed between every two adjacent wave crests of the concave-convex structure, when the diaphragm is applied to the secondary battery, the surface of the concave-convex structure faces a positive pole piece or a negative pole piece, gas generated in the working process of the battery can be directionally discharged through the gaps between the wave crests, the produced gas is discharged in time, and the service life of the battery is prolonged. According to the present invention, the expansion of the positive pole piece or the negative pole piece on the electrolyte contact interface is reduced or avoided, such that the corresponding pole piece ...

Hard carbon negative electrode material and preparation method and application thereof

The invention discloses a method for preparing a hard carbon negative electrode material. The method comprises the following steps: (1) pre-sintering sheep manure balls in a protective atmosphere to obtain an intermediate product; (2) crushing the intermediate product to obtain a crushed sample; (3) soaking the crushed sample with dilute acid, washing with water, and drying to obtain a purified product; and (4) performing high-temperature carbonization treatment on the purified product in a protective atmosphere to obtain the hard carbon negative electrode material. According to the preparation method, sheep manure balls are selected as a precursor, and the prepared hard carbon material is good in particle morphology, relatively high in tap density and good in processability; the sheep manure balls are relatively high in nitrogen and phosphorus element content, so that the nitrogen and phosphorus co-doped hard carbon negative electrode material can be synthesized in the carbonization process ...

Sulfur-doped hard carbon coated graphite negative electrode material, preparation method thereof and lithium ion battery

The invention relates to the technical field of battery materials, in particular to a sulfur-doped hard carbon coated graphite negative electrode material, a preparation method thereof and a lithium ion battery, and the sulfur-doped hard carbon coated graphite negative electrode material comprises the following components in parts by mass: 3-5 parts of sodium lignin sulfonate, 25-45 parts of deionized water and 50-70 parts of graphite. After the material is made into a negative pole piece, the negative pole piece, a diaphragm and a positive pole piece are assembled into a battery cell in a winding mode, and then the lithium ion battery is prepared through the procedures of top sealing, liquid injection, standing, formation, shaping and the like. Sodium lignin sulfonate prepared from papermaking black liquor is used as a coating agent, so that the economic value is high; sodium lignin sulfonate is easily dissolved in water, so that the use of an emulsifier or an organic solvent can be avoided ...

Back temperature micro-area imaging coating for flame flow ablation experiment and preparation and use methods of back temperature micro-area imaging coating

The invention discloses a flame flow ablation experiment back temperature micro-area imaging coating and a preparation and use method thereof. The flame flow ablation experiment back temperature micro-area imaging coating is prepared from, by mass, 100 parts of epoxy resin, 10-20 parts of epoxy resin coupling agent and 5-40 parts of rare earth temperature sensing powder. Mixing all the components of the temperature imaging coating, and uniformly stirring; and coating, drying and curing to form the back temperature micro-area imaging coating. According to the temperature imaging method, a 980 nm surface light source is used for irradiation, light emission of a coating surface is monitored, the temperature is represented according to the fluorescence intensity ratio of erbium ion 2H11/2 and 4S3/2 energy levels to ground state 4I15/2 transition light emission (typical light emission peaks are 521 nm and 539 nm respectively), and the temperature resolution can reach the millimeter level. The ...

Biomass-based hard carbon negative electrode material of lithium ion battery and preparation method of biomass-based hard carbon negative electrode material

The invention provides a lithium ion battery biomass-based hard carbon negative electrode material and a preparation method thereof, and the preparation method comprises the following steps: S1, cutting balsa wood into wood blocks, immersing the wood blocks into a sodium chloroacetate alkali solution, taking out the wood blocks, repeatedly cleaning the wood blocks with deionized water, and freeze-drying the wood blocks to obtain absolutely dry pretreated wood blocks; s2, the pretreated wood block is soaked in a ferrous ion solution in a vacuum mode, the wood block is transferred into a potassium nitrate alkali solution after being kept at the constant temperature for 2-4 h, a constant-temperature reaction is conducted for 5-7 h, reactants are repeatedly washed with deionized water, and freeze drying is conducted to obtain a magnetic Fe3O4 modified wood block; s3, performing vacuum impregnation on the magnetic Fe3O4 modified wood block in the precursor solution, performing magnetic induction ...

Composite pole piece and preparation method and application thereof

The invention provides a composite pole piece and a preparation method and application thereof, and the composite pole piece comprises a current collector, an active material layer, and a contact resistance regulation and control layer arranged between the current collector and the active material layer. The contact resistance regulation and control layer comprises a first contact resistance regulation and control layer, a second contact resistance regulation and control layer, a third contact resistance regulation and control layer, a fourth contact resistance regulation and control layer and a fifth contact resistance regulation and control layer which are sequentially arranged in parallel, and the first contact resistance regulation and control layer, the third contact resistance regulation and control layer and the fifth contact resistance regulation and control layer are made of the same material; the second contact resistance regulation and control layer and the fourth contact resistance ...

Multi -functional intelligent power

... 本实用新型涉及一种多功能智能电源，包括底盖，所述底盖侧边设有若干个USB输出口，所述底盖内设有电路板，所述底盖上设有电池仓，所述电池仓内设有电池，所述电池旁设有线圈支架，所述线圈支架上设有感应线圈，所述底盖上设有管理芯片，所述底盖内设有电源插座，所述底盖侧边设有开关，通过设置USB输出口和感应线圈，解决了用户无论是使用传统手机的线充方式还是使用最新流行的无线充电技术都无需带太多的充电器的问题；通过设置管理芯片，完成内置锂电池充电、指示、电量显示、共接口多模式输出/输出自动转换、触摸识别、手电唤醒等信号处理，本实用新型设计合理，可大规模推广。 ...

Flexible fireproof cable with good bending resistance

The invention discloses a flexible fireproof cable with good anti-bending performance, and particularly relates to the field of cables, the flexible fireproof cable comprises an insulating layer, an anti-compression layer is arranged on the inner wall of the insulating layer, a supporting frame is jointly installed between the outer side of the anti-compression layer and the inner wall of the insulating layer, and a cable core is arranged in the insulating layer on the outer side of the supporting frame. Compared with the prior art, by arranging the first connecting rod and the second connecting rod, through external force applied when the cable is bent, the first connecting rod and the second connecting rod can deform along with the bending of the cable towards the two sides, and the bending pressure is dispersed to the surface of the pressure dispersion layer; the cable core can be protected through the arrangement of the second supporting strip and the first supporting strip while the ...

Battery string, battery assembly, and manufacturing device and manufacturing method of battery string

The embodiment of the invention provides a battery string, a battery assembly, a manufacturing device and a manufacturing method of the battery string, and a manufacturing device and a manufacturing method of the battery assembly. The battery string comprises at least two battery pieces (11, 12), the at least two battery pieces (11, 12) comprise a first battery piece (11) and a second battery piece (12) which are adjacent to each other, grid lines are arranged on the front surface and the back surface of each battery piece in the at least two battery pieces (11, 12), the grid lines on the front surface of the first battery piece (11) are connected with the grid lines on the back surface of the second battery piece (12) through welding strips (20), and the welding strips (20) are arranged between the first battery piece (11) and the second battery piece (12). The first battery piece (11) and the second battery piece (12) are provided with an overlapping area (30), the overlapping area (30 ...

Artificial hybridization method for cultivating new yellow peony variety through subgroup Mongolian pollination

The invention discloses an artificial hybridization method for cultivating a new variety of yellow peony through mongolian pollination among subgroups. The artificial cross breeding among the subgroups is carried out through the technologies of freezing and preserving pollen with relatively strong drying resistance to solve the problem of flowering asynchronism among the subgroups, removing part of petals to promote ovary development, treating and guiding the pollen through ultraviolet irradiation and the like, genetic materials of yellow germplasm resources in the succulent flower disc subgroups are fully excavated, and the problems that the florescence of an existing cultivated variety group is close and the quality is poor are solved. And the germplasm innovation of the new variety of the paeonia lactiflora is creatively completed, and the method has remarkable social and economic benefits.

Method for promoting formation of peony sowing seedling rhizomes and rhizome buds

The invention belongs to the technical field of plant cultivation and propagation, and provides a method for promoting formation of rhizomes and rhizome buds of paeonia lactiflora sowing seedlings, the paeonia lactiflora sowing seedlings which grow consistently and strongly are adopted for cultivation, morphogenesis and accumulation of nutrient substances are conducted after 8 weeks of cultivation, then 90-110 mg/L of ABA and 0.8%-1.2% of a sucrose solution are adopted for spraying treatment, and the paeonia lactiflora sowing seedlings are obtained. On the basis of guaranteeing complete development of the rhizomes and the rhizome buds, under the condition of the same growth time, the thickness of the rhizomes is increased by 47.6%, and the number of the rhizome buds is increased by 5 times, so that the growth cycle of Chinese herbaceous peony seedlings is greatly shortened, the thickness of the rhizomes and the number of the rhizome buds are increased, and the yield of the Chinese herbaceous ...

Address positioning method and device based on word segmentation model

The invention provides an address positioning method and device based on a word segmentation model. The method comprises the following steps: segmenting original address information into a plurality of different types of address elements based on the word segmentation model; constructing index tables according to the plurality of different types of address elements, and constructing a standard address base by enabling the original address information and the index tables to be in one-to-one correspondence; obtaining at least one to-be-retrieved address text; segmenting the to-be-retrieved address text into a plurality of retrieval elements based on a word segmentation model; and respectively matching each retrieval element with information in the standard address base, and outputting a localization node according to a total similarity value calculated by matching. By adopting the method and the device, the address positioning accuracy can be effectively improved.

Geographic entity positioning analysis method and device and computer equipment

The invention provides a positioning analysis method and device for a geographic entity and computer equipment, and the method comprises the steps: extracting original address information of metadata of the geographic entity, carrying out the first standardization processing of the original address information, and obtaining standard address information; extracting the identification code and the first attribute information of the geographic entity metadata, establishing an index according to the identification code, the first attribute information and the standard address information, and accessing the corresponding geographic entity metadata to construct a standard address knowledge base; obtaining at least one to-be-retrieved data text; and matching the index information of the standard address knowledge base with the to-be-retrieved data text to obtain a matching result, and obtaining second attribute information of the geographic entity according to the matching result. By adopting ...

High-voltage cable wiring device and wiring method

The invention relates to the field of power equipment, and particularly discloses a high-voltage cable wiring device and a wiring method.The high-voltage cable wiring device comprises a cable fixing cylinder, an adjusting ring is arranged on the outer ring of the cable fixing cylinder, a cable fixing connector is installed on the right side of the adjusting ring, and the cable fixing connector is meshed with a cable connection relay; the cable fixing cylinder and the cable connecting relay are fixedly connected through a first locking assembly, a high-voltage cable is installed in the cable fixing cylinder, the cable connecting relay comprises a left connecting relay and a right connecting relay, the left connecting relay and the right connecting relay are movably connected through a tensile assembly, and high-temperature fusing assemblies are arranged in the left connecting relay and the right connecting relay. According to the invention, through cooperation of the cable connection relay ...

Negative pole piece of sodium ion battery, preparation method of negative pole piece and sodium ion battery

The invention provides a negative pole piece of a sodium ion battery, which comprises a negative pole material, a binder, a conductive agent, a thickening agent and a current collector, and is characterized in that the range of the substitution degree of the thickening agent is 0.9-1.4. The invention further provides a preparation method of the sodium ion battery negative electrode plate and a sodium ion battery.

Fireproof wire and cable production fire resistance test device

The invention discloses a fireproof wire and cable production fire resistance test device which comprises a storage box, a door plate and a gas bottle, one side of the gas bottle is fixedly connected with a gas connector, one side of the gas connector is movably connected with a valve, one side of the gas connector is connected with a gas pipe in an embedded mode, and one side of the gas pipe is fixedly connected with a connecting pipe. The top of the connecting pipe is fixedly connected with a fuel gas plate, the top of the fuel gas plate is fixedly connected with a fuel gas head, the bottom end of the connecting pipe is fixedly connected with a support block, the support block supports the combustion device, and during use, the valve is started in a rotating mode, the two ends of the fuel gas pipe are connected to the fuel gas connector and the connecting pipe respectively, and the connecting pipe is communicated with the fuel gas plate. The fuel gas head is a fuel gas outlet, ignition ...

Method for evaluating service life of lithium battery

The invention provides a method for evaluating the service life of a lithium battery. The lithium battery comprises a lithium battery material to be evaluated. The evaluation method comprises the following steps: accelerating aging of the lithium battery to a first health state; fitting a fitting life curve of the lithium battery before the first health state by adopting a fitting equation; and aging the lithium battery in the first health state to a second health state by adopting a preset cycle method, and obtaining a later life curve. According to the lithium battery service life evaluation method, the lithium battery in the first state is obtained through the accelerated aging method, so that the evaluation period is shortened, and the service life characteristic of the to-be-evaluated lithium battery material can be quickly evaluated. In addition, whether lithium separation exists in the lithium battery material in the later period can be judged by aging the battery in the first state ...

Part clamping device for electrical machining

The invention relates to the technical field of electrical machinery, and discloses a part clamping device for electrical machinery machining, which comprises a bottom plate and two supporting legs fixedly arranged on the bottom surface of the bottom plate, and a placing mechanism and a clamping mechanism are arranged above the bottom plate; the placing mechanism is positioned above the clamping mechanism; the placing mechanism comprises a rotating disc; the clamping mechanism comprises a clamping part and a replacing part. By arranging the clamping mechanism, the electric parts can be fixed when being machined, the situation that the machining precision of the electric parts is reduced due to the fact that the electric parts move in the machining process is avoided, a clamping ring can be replaced when the different electric parts are machined, the effect of the electric parts can be better in the clamping process, and the machining precision of the electric parts is improved. And meanwhile ...

Composite current collector and preparation method thereof

The invention provides a composite current collector. The composite current collector comprises a polymer supporting layer; the first anti-corrosion layer is arranged on the upper surface of the polymer supporting layer; the first metal conductive layer is arranged on the first anti-corrosion layer; the second anti-corrosion layer is arranged on the lower surface of the polymer supporting layer; and the second metal conductive layer is arranged below the second anti-corrosion layer. The composite current collector provided by the invention is provided with the modified inorganic ceramic particle coating layer, an electron donating group is arranged on a modified molecular chain, the composite current collector shows a very strong protonic characteristic, a strong hydrogen-bond interaction can be generated between the composite current collector and a proton donor, HF in an electrolyte can be adsorbed, and the service life of the composite current collector is prolonged. The composite current ...

Verification method and device, electronic equipment and computer readable storage medium

The invention discloses a verification method for an interconnection device, a verification device for the interconnection device, electronic equipment and a computer readable storage medium. The interconnection device comprises a plurality of forwarding units in communication connection. The verification method comprises the following steps: collecting information of data packets forwarded by a plurality of routing units respectively; summarizing the forwarding information of the target data packet in the interconnection device according to the information of the data packets forwarded by the plurality of routing units, so as to obtain the actual forwarding characteristics of the target data packet in the interconnection device; obtaining an expected forwarding feature corresponding to the target data packet; and verifying the interconnection device according to the actual forwarding feature and the expected forwarding feature of the target data packet. According to the method, the overall ...

Electrode plate as well as preparation method and application thereof

The invention provides an electrode pole piece and a preparation method and application thereof.The electrode pole piece comprises a current collector and an electrode mixture arranged on the surface of at least one side of the current collector, and the electrode mixture comprises an active substance, polyacrylonitrile and a nano-ceramic material.The PAN and nano-scale ceramic particles are added into the electrode pole piece, so that the electrode pole piece is obtained; and the material has higher ionic conductivity under the condition of the same compaction density, so that the compaction density of the pole piece is improved under the condition of ensuring the battery performance.