137results about How to "Lower impedance" patented technology

The application discloses a kind of full solid-state battery and its preparation method and application, it is related to solid-state battery technical field.The edge of positive active layer is attached with solidified insulating glue, so as to use the solidified insulating glue to fill the size difference between the positive active layer and the negative active layer, and the end of the positive active layer and the negative active layer is flush, the insulating glue plays a supporting role under extrusion, avoids the problems such as collapse and short circuit caused by the size difference between the positive active layer and the negative active layer;The insulating glue at the edge can be bonded with the negative electrode under high pressure, and when the positive electrode is charged and discharged, the cycle performance difference caused by the volume change of the positive electrode during charging and discharging can be effectively alleviated, and the cycle of the battery is improved;It can also effectively avoid the occurrence of problems such as the edge of the positive electrode dropping material.By setting electrolyte film between the positive active layer and the negative active layer, the impedance between the electrolyte film and the electrode sheet is reduced by using the ionic liquid treatment layer on the electrolyte film, and the battery performance is improved.

The invention relates to an S-doped g-C3N4 coated modified graphite material, a preparation method thereof and a lithium ion battery negative electrode. The method comprises the following steps: mixing a g-C3N4 precursor with a sulfur source, and then carrying out heat treatment under the condition of shielding gas to obtain sulfur-doped graphite phase carbon nitride S-g-C3N4; carrying out plasma modification treatment on the surface of the graphite material by adopting plasma reaction gas to obtain modified graphite; mixing S-g-C3N4 with the modified graphite to obtain a mixed material; and calcining the mixed material in a protective gas environment to obtain the S-doped g-C3N4 coated modified graphite material. The invention also provides the graphite material prepared by the method and a lithium ion battery negative electrode prepared from the graphite material. The graphite material has relatively high conductivity, interface compatibility and structural stability.

This invention relates to the field of battery technology, specifically to a separator layer and a battery including the separator layer. The separator layer comprises nanofibers and inorganic particles embedded within the nanofibers. The separator layer of this invention combines high air permeability and high puncture strength; batteries including the separator layer of this invention have low self-discharge levels, low impedance, and high safety performance.

The present disclosure relates to a battery structure and an electronic device. The battery structure comprises a battery circuit board and two battery modules. The two battery modules are symmetrically arranged on both sides of the battery circuit board and connected with the battery circuit board. The first end of each flexible circuit board is connected with the battery circuit board, and the second end of each flexible circuit board is arranged to be connected with the mainboard of the electronic device. The first heat dissipation member is located between the two battery modules and is connected with the battery circuit board and the middle frame assembly of the electronic device. In the present disclosure, the plurality of flexible circuit boards are connected with the battery circuit board, and the plurality of flexible circuit boards simultaneously charge the battery modules to realize a fast charging mode, reduce the impedance of each flexible circuit board, and effectively reduce the heat generated by each flexible circuit board. The first heat dissipation member is connected with the battery circuit board and the middle frame assembly of the electronic device, respectively, conducts the heat in the battery circuit board to the middle frame assembly, and further dissipates heat for the battery structure.

This invention provides an electrolyte, a battery, a battery pack, and an electrical device. The electrolyte includes additives, including fluorocarbonate, unsaturated carbonate, a first sulfide additive, a second sulfide additive, and an anhydride additive. The first sulfide additive includes sulfonate compounds; the second sulfide additive includes sulfite compounds and / or sulfate compounds. Based on the mass of the electrolyte, the mass percentage of each component is as follows: fluorocarbonate m1%, 1.5≤m1≤5; unsaturated carbonate m2%, 1.5≤m2≤3; first sulfide additive m3%, 0.5≤m3≤2; second sulfide additive m4%, 0.5≤m4≤2; anhydride additive m5%, 0.3≤m5≤0.8; and satisfies 1≤(m1+m2) / (m3+m4+m5)≤3. This invention can effectively suppress gas generation at high temperatures in the battery and improve the cycle performance and storage performance of the battery under high-temperature conditions.

The embodiment of the present application provides an electrolyte, a secondary battery and an electric device, wherein the electrolyte provided by the embodiment of the present application comprises a sodium salt, an organic solvent and an additive, the additive at least simultaneously comprises a B-O bond, a C=C bond and a C=O bond, wherein B in the B-O bond is in an electron-deficient state, so that the additive is acidic, can complex with an acid radical ion of the sodium salt, thereby improving the dissociation degree of the sodium salt and the migration number of sodium ions, and reducing the bulk phase and electrode interface impedance; and the C=C bond and the C=O bond in the additive can effectively reduce the deposition of transition metals such as Mn of the negative electrode, reduce the impedance, can form a highly stable electrode-electrolyte interface structure, can stabilize the positive and negative electrode interface film, and improve the high-temperature storage and cycle performance of the battery, thereby solving the problems that the electrode / electrolyte interface of the existing sodium ion battery is unstable, and is easy to cause the battery to deform and the performance to decay.

The invention provides a composite positive plate, a preparation method thereof and a battery, and belongs to the technical field of batteries. The interface conductive layer is arranged on at least one side of the positive electrode active material layer, and the interface conductive layer comprises conductive filler and an elastic matrix. According to the composite positive plate, the interface conductive layer with conductivity, flexibility and elasticity is arranged on at least one side of the positive active material layer, so that when the composite positive plate is applied to the battery and the interface conductive layer is close to one side of the diaphragm, not only can the interface impedance be reduced, but also the wettability of electrolyte on the positive active material layer can be improved; when the interface conducting layer is close to one side of the shell, the positive electrode active material layer can be better protected, extrusion damage of the shell to the positive electrode active material layer is reduced, the interface conducting layer can serve as a current collector, the electrochemical performance of the battery is improved, and the interface conducting layer can adapt to volume expansion of the composite positive plate in the charging and discharging process of the battery and improve the cycle performance of the battery.

This invention relates to the field of battery technology, specifically to a composite negative electrode current collector, its preparation method, and its application. The composite negative electrode current collector of this invention includes a polymer material layer, a lithium replenishment layer, and a conductive metal layer. The lithium replenishment layer is located on at least one surface of the polymer material layer, and the conductive metal layer is located on the surface of the lithium replenishment layer away from the polymer material layer. The lithium replenishment layer includes a composite lithium material comprising a lithium metal core and a lithium compound coating layer covering the surface of the lithium metal core. The conductive metal layer has multiple through-hole structures. The composite negative electrode current collector of this invention, through the coordination of its various layer structures, is beneficial for improving the storage performance of the negative electrode, reducing battery impedance, shortening the electrolyte wetting time, enhancing lithium replenishment capacity, preventing the formation of lithium dendrites, and improving battery safety performance.

The application provides a current collector, a pole piece, a battery, a battery pack and a power utilization device. The current collector comprises a current collector base and a conductive layer. The conductive layer is arranged on at least one surface of the current collector base in the thickness direction. The conductive layer has a concave-convex structure away from the first surface of the current collector base. The current collector can reduce the impedance of the battery and effectively improve the cycle performance of the battery by arranging the concave-convex structure on the conductive layer.

The invention provides an electrolyte and a lithium ion battery using the same, the electrolyte comprises an electrolyte additive, and the electrolyte additive comprises a first compound and a second compound; wherein the chemical structural formula of the first compound is shown as a formula (I-a) or a formula (I-b), and the chemical structural formula of the second compound is shown as a formula (II); in the formula (I-a), the formula (I-b) and the formula (II), R1 to R10 are respectively and independently selected from hydrogen atoms, halogen atoms, carbonyl groups, cyano groups, isocyanate, isothiocyanate, unsubstituted or substituted alkyl groups of C1 to C10, unsubstituted or substituted alkoxy groups of C1 to C10, unsubstituted or substituted alkenyl groups of C2 to C10, unsubstituted or substituted alkynyl groups of C2 to C10 and unsubstituted or substituted aryl groups of C6 to C20; and in the formula (II), the number of cyano groups is greater than or equal to 1. By introducing the first compound and the second compound, the normal-temperature and high-temperature cycle performance and low-temperature performance of the battery during high-voltage operation are improved.

This invention provides a halide solid electrolyte and its preparation method, belonging to the field of solid electrolyte technology. First, alkylphosphonic acid is reacted with lithium carboxylate to prepare lithium-ionized alkylphosphonic acid. Then, the lithium-ionized alkylphosphonic acid is mixed with a halide electrolyte, and the mixture is dispersed in a solvent, stirred, filtered, and dried to obtain a halide solid electrolyte coated with lithium-ionized alkylphosphonic acid. This invention constructs a dense, uniform hydrophobic protective layer on the surface of halide electrolyte particles through in-situ coating with long-chain lithium alkylphosphonate, effectively isolating moisture and oxygen from the environment and significantly improving the air stability of the halide electrolyte. Simultaneously, this coating layer helps reduce the interfacial impedance between the electrolyte and electrode materials, optimizing the overall ionic conductivity of the material.

The application belongs to the technical field of electric connectors, and particularly relates to a socket of an electric connector and the electric connector. The socket of the electric connector comprises a plug and a socket matched with each other, and further comprises a locking structure for locking the plug and the socket. The socket comprises a shell provided with an L-shaped mounting cavity. An L-shaped contact module is arranged in the mounting cavity. The contact module comprises a horizontal part for matching with the plug of the electric connector, a vertical part perpendicular to the horizontal part, and a transition part between the horizontal part and the vertical part. The horizontal part is movably arranged along the insertion direction of the plug and the socket, the vertical part is fixedly arranged, and the transition part is an elastic part. The transition part is used for enabling the plug to push the horizontal part to retreat in the mounting cavity and be elastically deformed when the plug and the socket are matched with each other. When the plug and the socket are inserted in place and locked by the locking structure, the horizontal part of the contact module of the socket is in a retreated state.

This invention belongs to the field of composite electrode materials technology, and relates to a method for preparing a NiCoCu selenide composite MXene / carbon sphere thin film electrode material, comprising: first, dissolving ZIF-67 powder in a carbon sphere solution, then adding an MXene aqueous solution, stirring for 1-10 hours, filtering and drying to obtain ZIF-67@MXene / CS; second, preparing a solution according to the proportion of urea, copper source, nickel source and ethanol, immersing ZIF-67@MXene / CS, and reacting hydrothermally to obtain a NiCoCu-LDH@MXene / CS thin film; third, mixing the NiCoCu-LDH@MXene / CS thin film, selenium powder and sodium borohydride in a mass ratio of 0.5-1:1-2:1-2, reacting at 150-180°C for 12-24 hours, washing the obtained product with deionized water and drying to obtain the final product. MXene and carbon spheres together provide a flexible substrate for the self-supporting material, increasing its conductivity and specific surface area. Simultaneously, NiCoCu-Se intercalation into the MXene acts as an intermediate buffer, preventing MXene self-stabilization and making its structure more stable. When applied as the positive electrode material for supercapacitors, the self-supporting material avoids the use of binders, reducing the material's impedance and improving electrochemical performance.

To overcome the problem of insufficient high-temperature cycle performance in existing lithium-ion batteries, this invention provides a lithium-ion battery comprising a positive electrode, a negative electrode, and a non-aqueous electrolyte. The positive electrode includes a positive electrode current collector with a conductive coating on its surface and a positive electrode material layer disposed on the positive electrode current collector. The non-aqueous electrolyte includes a non-aqueous organic solvent, a lithium salt, and an additive. The additive includes a compound represented by structural formula 1. The lithium-ion battery satisfies the following condition: and 2.4 ≤ M. A ≤3.6, 0.1≤W A ≤5, 0.1≤d≤10, 3.3≤c≤3.8. The lithium-ion battery provided by this invention can effectively improve high-temperature cycling and storage performance.

This invention discloses an electrolyte and a battery. The electrolyte comprises an electrolyte, a solvent, and a first additive, the first additive having the structural formula (1). The first additive contains silicon-based phosphate groups, which have low oxidation and reduction potentials. It can generate an inorganic interface film rich in P and Si at the positive and negative electrodes. The generated interface helps to reduce the interfacial impedance of the positive and negative electrodes. Cyclic phosphates have good high-voltage stability. The generated phosphate compounds can suppress excessive ion deposition during the high-voltage positive electrode phase transition, providing better protection for the positive and negative electrode interfaces and improving high-voltage cycle performance. The polycyclic phosphate structure can capture hydroxyl radicals and hydrogen radicals generated by the electrolyte at high temperatures, preventing the diffusion reaction of hydrocarbon radicals. At the same time, the silicon-based structure can generate a stable thermally stable film at the positive and negative electrode interfaces. The generated high-thermal-stability inorganic thermal insulation protective layer can reduce the flammability of the electrolyte and significantly improve the safety performance of the battery.

The invention relates to the technical field of power motors, in particular to a base and end cover sealing structure and a motor, and the base and end cover sealing structure comprises a base, a shell, an outer end cover, an inner end cover and a sealing element; the inner end cover is detachably arranged at the first end of the base, the second end, opposite to the inner end cover, of the base is rotationally connected with a rotary connecting assembly, and the rotary connecting assembly is connected with the shell. One end of the outer end cover is connected with the shell, the other end of the outer end cover is opposite to the inner end cover, and the sealing piece is arranged between the inner end cover and the outer end cover and seals the opposite space between the inner end cover and the outer end cover; a connecting buckle is arranged at the end, facing the rotary connecting assembly, of the inner end cover, and an assembling clamping groove matched with the connecting buckle is formed in the base. The problems that traditional threaded connection is low in efficiency and prone to failure are solved, and efficient assembly and reliable sealing are achieved while the stability of the overall structure after connection with external accessories is guaranteed.

The utility model provides an electric connector and a battery, and relates to the technical field of batteries. The electric connecting piece comprises a sleeve, a conducting strip and a fixing piece. The sleeve is provided with a first thread. The conducting strip is provided with a first surface and a second surface which are oppositely arranged. The sleeve is connected with the conducting strip, and at least part of the sleeve protrudes out of the first surface. The conducting strip is provided with a through hole penetrating through the first surface and the second surface. The fixing piece is provided with second threads matched with the first threads, the fixing piece and / or the sleeve are / is arranged in the through hole in a penetrating mode, at least part of the fixing piece protrudes out of the second surface, and the fixing piece is in threaded connection with the sleeve. The electric connecting piece is simple in structure, convenient in part assembly, small in deformation, small in impedance and beneficial to improvement of product yield.

In order to solve the deficiency of 1,3-propanesultone as an additive, the application provides a lithium battery electrolyte and a lithium battery. The electrolyte comprises an organic solvent, a lithium salt and an additive, and the additive comprises a thiophene compound as shown in general formula (I), wherein R1 is a non-hydrogen group, R2-R3 are H or an organic group, and at least one of R1-R3 is a halogen-substituted or unsubstituted pinacol borate group. The thiophene compound in the electrolyte of the application can replace 1,3-propanesultone, and can participate in the film formation of the positive and negative electrodes, improve the electrode kinetic and thermodynamic properties, reduce the impedance of the interface film, reduce the gas production during battery formation and storage, improve the voltage drop of the battery during full charge storage, and improve the stability of the electrolyte.

The invention relates to the technical field of electrocardiosignal collection, in particular to a portable electrocardiosignal collection device which comprises a detector body and a sliding turnover assembly, and a plurality of electrode contacts are arranged on the bottom face of the sliding turnover assembly and the bottom face of the detector body. Mounting cylinders are arranged on the outer sides of the electrode contacts, telescopic assemblies are arranged below the mounting cylinders, extrusion wetting assemblies located in the mounting cylinders are arranged above the telescopic assemblies, and communication assemblies are arranged between the extrusion wetting assemblies and the telescopic assemblies; the telescopic assembly comprises a first restraining piece, a second restraining piece is arranged in the first restraining piece, and when the first restraining piece makes contact with the human body and squeezes the human body, the second restraining piece extends, and the squeezing wetting assembly humidifies the electrode contact through the communicating assembly; by arranging the telescopic assembly and the extrusion wetting assembly, the area, connected with the human body, of the electrode contact is in a wet state in the electrocardiogram monitoring process, the impedance of the connecting position is reduced, and the baseline drift phenomenon is avoided.

This invention discloses a mesoporous carbon composite material and its preparation method. The preparation method is as follows: S1: Using tetraethyl orthosilicate as the silicon source, an ethanol / deionized water mixture, a surfactant as the solvent system, and a conductive agent as the dopant, a polycondensation reaction is carried out under acid-base catalysis. A silica / soft template composite is formed through a sol-gel process, followed by high-temperature sintering to obtain a silica composite template; S2: A mixed solution A is prepared by mixing a phenol source, a dispersant, and water; a mixed solution B is prepared by mixing an aldehyde source, a lithium supplement, and a catalyst; S3: Mixed solutions A, B, and the silica composite template are reacted, carbonized, and activated. The resulting material is then added to a hydrofluoric acid solution to dissolve the template, and the resulting material undergoes thermal reduction to obtain the mesoporous carbon composite material. The mesoporous carbon prepared using the template method exhibits advantages such as high uniformity, large pore volume, and low powder resistivity. It can be applied to silicon-carbon composite materials to increase the deposition amount of nano-silicon, improve specific capacity, and reduce the expansion of silicon-carbon materials.

The invention discloses a high-conductivity alkaline anion exchange membrane and a preparation method thereof, the high-conductivity alkaline anion exchange membrane is prepared from a rigid aromatic monomer, reactive quaternized polyarylether sulfone, immobilized quaternary ammonium salt, hydrophobic mesoporous SiO2 and a cross-linking agent, and the surface of the high-conductivity alkaline anion exchange membrane is provided with a cation density gradient transition layer and an anti-corrosion coating. The alkali-resistant stability of the membrane is improved through covalent bonding of quaternary ammonium and a three-dimensional cross-linked structure, the mesoporous SiO2 regulates swelling and constructs an ion channel, and the interface contact resistance is reduced through a gradient structure. And the OH <-> conductivity at 80 DEG C reaches 149-168 mS / cm, the 4000 h alkali-resistant retention rate is greater than or equal to 90%, the in-plane swelling rate is less than or equal to 5.1%, the interface contact resistance is as low as 0.08 omega.cm < 2 >, and the composite material has the advantages of high conductivity, low swelling, high alkali resistance and excellent interface compatibility, and is suitable for alkaline fuel cells.

The invention discloses an electronic assembly and a vertical power supply module. The electronic component comprises a mother board, a processor and a vertical power supply module. The mother board includes a first face and a second face. The processor includes a first face processor substrate mounted on the motherboard; the vertical power supply module is electrically connected to the processor to supply power to the processor. The vertical power supply module is attached to the processor substrate through an aperture through the motherboard.

A battery and terminal device are disclosed. The battery includes a cell and a circuit board assembly. The cell includes a first tab, a second tab, a third tab, and a fourth tab arranged sequentially along a first direction. The first tab and the second tab have the same polarity, the third tab and the fourth tab have the same polarity, and the second tab has the opposite polarity to the third tab. The circuit board assembly includes a first circuit board, a first connector, a second connector, a third connector, a fourth connector, and a protection switch module. The first connector, the second connector, the third connector, and the fourth connector are arranged sequentially on the first circuit board along the first direction. The first circuit board integrates a first circuit and a second circuit. The first circuit includes a first branch connecting the first connector and the second connector in series, and the second circuit includes a third branch connecting the third connector and the fourth connector in series. The protection switch module is connected in series in either the first branch or the third branch. This battery is advantageous for improving energy density.

The application discloses a kind of quasi-solid electrolyte and preparation method thereof, battery, electrical device, electrolyte salt is mixed with carbonate solvent, and preparation base electrolyte solution;Diluent and initiator are added to base electrolyte solution and are reacted, and quasi-solid electrolyte is prepared;The diluent includes ring-opening polymerizable cyclic monomer diluent, and the mass ratio of the diluent, the initiator and the base electrolyte solution is (30-70) : (0.1-0.5) : (30-70) in turn.The precursor solution containing local high concentration solvation structure is formed in the preparation process of quasi-solid electrolyte of the application, and quasi-solid electrolyte with low impedance, high ionic conductivity, excellent high rate performance and good safety performance is prepared using in-situ polymerization technology.The quasi-solid electrolyte prepared by the application is assembled into battery, with excellent charge-discharge performance, excellent cycle stability under high rate conditions, and low economic cost and high practicality.

An electronic device (100) applied to an electric motor includes a wiring substrate (101), an electric connection wiring (150) disposed at a substantially center of the wiring substrate and connected to a power source, a plurality of motor connection wirings (114-116) disposed at a periphery side of the wiring substrate compared to the electric connection wiring and connected to the electric motor, and a plurality of semiconductor modules (120) each including a plurality of semiconductor elements (123b, 124b) and a resin mold (125) integrally sealing the plurality of semiconductor elements. The plurality of semiconductor modules are disposed on the electric connection wiring or at a position at the periphery side of the wiring substrate compared to the electric connection wiring and at a center side of the wiring substrate compared to the motor connection wirings, and electrodes of at least a part of the plurality of semiconductor modules are mounted on the electric connection wiring.

This invention discloses a warm isostatic pressing (WIP) densification process for solid-state batteries. This invention relates to the field of solid-state battery manufacturing technology and aims to solve the problem of uneven stress and cracking of thin electrolyte membranes caused by existing isostatic pressing processes. The method involves aligning and bonding the negative electrode sheet with a solid electrolyte membrane containing a substrate, followed by cold isostatic pressing pre-pressing. The substrate is then removed, and the positive electrode sheet is bonded to complete cell assembly. The cell is placed in a perforated fixture and a flexible sheath, vacuum-sealed, and then sent into the warm isostatic pressing chamber. A pressure-transmitting medium is injected, and the temperature is programmed to reach the target process temperature, followed by pressurization to the target process pressure. Based on the material system of the solid electrolyte membrane, pressure and temperature are maintained at the corresponding temperature and pressure. Controllable pressure release is performed at a rate slower than the pressurization rate, while simultaneously cooling to below the set temperature. This method improves the manufacturing yield, interface densification, and consistency of the cell through step-by-step pre-pressing and programmed temperature and pressure control.

This invention relates to the field of carbon composite materials, specifically providing a MOF-pitch-based porous carbon composite material, its preparation method, and its applications. The preparation method includes the following steps: doping a transition metal oxide and a nitrogen source into a MOF material to obtain a MOF precursor; mixing the MOF precursor with an amine crosslinking agent and oxidized pitch, followed by pre-carbonization and activation to obtain pitch-based porous carbon; and fluorinating the pitch-based porous carbon to obtain the MOF-pitch-based porous carbon composite material. The MOF-pitch-based porous carbon composite material prepared by this method possesses high pore volume, high crush strength, and high initial efficiency, exhibiting excellent electrochemical and electrical properties when used as a negative electrode material for lithium-ion batteries.

The invention discloses a high-energy-density semi-solid-state lithium battery and a preparation method thereof, and belongs to the technical field of semi-solid-state batteries. The semi-solid lithium battery comprises a positive electrode, a negative electrode and a semi-solid electrolyte, wherein the negative electrode is a silicon-based negative electrode; the semi-solid electrolyte comprises a skeleton layer and gel layers, wherein the gel layers coat the left and right surfaces of the skeleton layer; the framework layer is a mesoporous lithium lanthanum zirconium oxygen-based ceramic framework layer; the raw material of the gel layer comprises a functionalized acrylate gel precursor; the functionalized acrylate gel precursor comprises a functionalized acrylic monomer, a plasticizer and a functional aid in a mass ratio of (60-70): (20-30): (10-20). Through the gel layer, the skeleton layer and the semi-solid electrolyte of the gel layer structure, the buffer volume effect, the skeleton layer and the gel layer form a parallel ion transmission channel, the interface impedance is reduced, the conductivity is improved, and the high-safety semi-solid lithium battery with high ion conductivity and high energy density is obtained.

The application provides a non-contact ECG signal collection foot ring sensor, which comprises a foot ring body and an ECG signal sensor arranged on the foot ring body, wherein the ECG signal sensor comprises an electrode composite layer, a first insulating layer, an electromagnetic shielding layer and a second insulating layer arranged in sequence, the electrode composite layer comprises a first electrode, a second electrode and a polarity layer arranged between the first electrode and the second electrode, the polarity layer comprises a polarity material of barium titanate and / or calcium titanate, the first electrode is used for being connected to an ECG collection circuit, the second electrode is arranged in suspension, and the electromagnetic shielding layer is grounded. The foot ring sensor of the application comprises the electrode composite layer, the electrode composite layer contains the polarity material of barium titanate and / or calcium titanate with high dielectric constant, and thus has high dielectric performance, can effectively improve the coupling capacitance between the skin and the electrode, and further reduce the capacitive reactance and total impedance, reduce the attenuation degree of the ECG signal in the coupling process, and improve the electric signal detection effect.

The embodiment of the invention discloses a high-performance quartz vibrating beam accelerometer and a preparation method, the high-performance quartz vibrating beam accelerometer comprises a stress amplification unit and a resonance unit, and the stress amplification unit comprises a first vibrating beam mounting groove and a second vibrating beam mounting groove. The resonance unit comprises a vibration beam, a first vibration beam mounting arm, a second vibration beam mounting arm, a first driving groove and a second driving groove, the first driving groove and the second driving groove are formed in the upper surface and the lower surface of the vibration beam respectively, and the first vibration beam mounting arm and the second vibration beam mounting arm are arranged at the two ends of the vibration beam; the first vibrating beam mounting arm and the second vibrating beam mounting arm are embedded in the first vibrating beam mounting groove and the second vibrating beam mounting groove respectively, so that the resonance unit is fixedly assembled on the stress amplification unit, the sensitivity of the quartz vibrating beam accelerometer can be improved, the distance between the positive electrode and the negative electrode can be shortened, and the electric field driving efficiency is improved.