51results about How to "Improve volume utilization" patented technology

The invention discloses a battery device, an energy storage device and a power utilization device.The battery device comprises a plurality of battery monomers, each battery monomer comprises a shell and an electrode assembly, each shell comprises a plurality of shell walls, and the shell walls comprise a pair of first shell walls oppositely arranged in the first direction and a pair of second shell walls oppositely arranged in the second direction; at least one first shell wall sinks towards the side where the electrode assembly is located to form a sunken part, and the sunken part is arranged at one end, in the second direction, of the shell; an electrode terminal is accommodated in the concave part; the plurality of battery monomers are arranged in a third direction to form a battery monomer group, the sunken parts of the battery monomers are positioned on the same side of the battery monomer group in the second direction, and a sampling assembly is arranged at the end part of the battery monomer group in the second direction. According to the battery device, the space occupation of the battery monomers in the first direction and the second direction can be reduced, the waste of the space in the box body of the battery device in the arrangement state of the battery monomers is reduced, and the volume utilization rate and the energy density of the battery device are improved.

The utility model discloses a battery and an electric device. The battery comprises a box body; the battery monomer row comprises a plurality of battery monomers arranged along a first direction, and the plurality of battery monomer rows are stacked along a second direction to form a battery monomer array and are placed in the box body; and the heat management component is arranged on one side of the plurality of battery monomers along the third direction and is used for exchanging heat with the battery monomers, and the first direction is vertical to the second direction and the third direction. Therefore, the situation that the thermal management component occupies the arrangement space of the battery monomers can be relieved, and the volume utilization rate of the battery monomers in the battery can be improved.

The invention discloses a battery pack which comprises a shell, a battery module and a cooling assembly, the battery module and the cooling assembly are arranged in the shell, the cooling assembly comprises a plurality of liquid cooling plates, the liquid cooling plates are used for cooling pole columns in the battery module, and air bags are further arranged on the liquid cooling plates; when the battery is normally used, the air bag is used for elastically supporting and limiting the liquid cooling plate, so that the liquid cooling plate is stably attached to the pole end of the battery module, and the cooling effect on the battery is further ensured; meanwhile, when the battery is on fire, the safety of the battery can be ensured by releasing inert gas through breaking of the airbag.

The invention provides a liquid-cooled integrated battery box body and a power battery pack. A liquid-cooled bottom plate, a front frame, a rear frame, a left side cross beam and a right side cross beam enclose a battery cell accommodating space; a liquid cooling flow channel which is through left and right is arranged in the liquid cooling bottom plate; the liquid cooling bottom plate is connected with the left side cross beam and the right side cross beam; the left side cross beam and the right side cross beam are respectively provided with a front-back through flow guide channel; the flow guide channel of the left side cross beam is communicated with a left side port of the liquid cooling flow channel, and the flow guide channel of the right side cross beam is communicated with a right side port of the liquid cooling flow channel, so that a liquid cooling system of the liquid cooling integrated battery box body is formed. The liquid cooling connection design can be simplified, the design cost is reduced, the internal space of the battery pack is not occupied, and the volume utilization rate of the battery pack is improved.

The utility model discloses a fully-immersed cooling battery system. The fully-immersed cooling battery system comprises a lower box body, an upper cover, a flow equalizing plate and a battery module, the battery module is located in the lower box body, the flow equalizing plate is arranged between the battery module and the upper cover, the upper cover is provided with a liquid inlet assembly, the liquid outlet end of the liquid inlet assembly is connected with a spraying device, the lower box body is provided with a liquid outlet, and the flow equalizing plate is provided with a flow channel used for conducting flow guiding, flow dividing or flow equalizing on cooling liquid sprayed out by the spraying device. Therefore, the cooling liquid entering in a radial manner is subjected to flow equalizing and guiding, so that the cooling liquid uniformly flows to the top of the battery module, then flows through the gaps of the battery module and flows out of the liquid outlet. According to the utility model, the spraying device and the flow equalizing plate are matched with each other, an upper-inlet lower-outlet flow direction is adopted, a circulating flow channel with high uniformity and a short circulating path is provided, a cooling liquid flowing path is short, the distribution is uniform, all-directional cooling is realized, the temperature of a battery system under a fast charging condition can be effectively controlled, and the system achieves the effects of efficient heat exchange and excellent temperature equalization.

The utility model relates to the technical field of batteries, in particular to a liquid cooling energy storage type battery PACK structure which comprises an integrated lower shell which is of a rectangular plate-shaped structure, a liquid cooling plate is embedded and fixed on the surface of the integrated lower shell, a module fixing structure is arranged on the surface of the integrated lower shell, a plurality of battery modules are assembled in the module fixing structure, the battery modules are arranged on the liquid cooling plate, and the liquid cooling plate is arranged on the lower shell. And the battery module is fixed on the integrated lower shell by adopting the module fixing structure, so that the problem that in a device in the prior art, a liquid cooling pipeline passes through the interior of the PACK, so that the interior of the PACK is connected by pipelines twice, and the cooling liquid leaks in the PACK is solved, and the problems that the produced PACK is relatively large in size, complex in structure, low in cost and the like are also solved. And the sealing cost is increased.

The invention discloses a leaf vein bionic seal head plate heat exchanger which comprises a bionic inlet seal head, a heat exchange core body and an outlet seal head. The bionic inlet end socket comprises a main vein channel, an auxiliary vein channel and a transition section, the width of the main vein channel is gradually reduced in the flowing direction, the included angle between the side edge of the main vein channel and the horizontal line is theta 1, the auxiliary vein channel is connected with the main vein channel through the transition section, and the included angle between the tangent line of the transition section and the horizontal line is theta 2, fluid flows through the transition section through the bionic inlet end socket, enters the auxiliary vein channel and enters the heat exchange core body, the heat exchanger core body is composed of a single-layer or multi-layer flat plate and is affected by flowing media, each flat plate comprises a plurality of heat exchange channels or enhanced heat exchange surfaces, and the fluid flows into the heat exchange core body for heat exchange and finally flows out of the heat exchanger through the outlet end socket. By adjusting the cooperative relation between the auxiliary inclination angles and the main inclination angles of the heat exchange channels of the different auxiliary veins, fluid can be evenly distributed into the heat exchange channels, the volume utilization rate of the heat exchanger is increased, and the comprehensive performance of the heat exchanger is improved.

The utility model discloses a pen holder, which is suitable for a touch pen and is configured to have an electromagnetic shielding property. The pen holder comprises a pen point and a pen body, the pen body extends in the first direction, the pen point is located at one end, in the first direction, of the pen body, the inner diameter of the pen point is gradually reduced in the first direction, the pen point can be installed on the pen point, and the pen point is configured to be capable of interacting with a touch screen. The pen body and the pen point jointly define a containing cavity, a first opening is formed in the end, away from the pen body, of the pen point and communicated with the containing cavity, the pen point is installed in the containing cavity and protrudes out of the pen point from the first opening, the size of the portion, protruding out of the pen point, of the pen point is smaller than that of the pen point in the first direction, and the pen point and the pen body are integrally formed. The electromagnetic shielding performance of the pen holder is improved, and the risk of electromagnetic information leakage in the use process of the touch pen is reduced.

The embodiment of the invention provides a liquid cooling plate and a battery pack. The liquid cooling plate has a first direction, a second direction and a third direction which are intersected pairwise, the liquid cooling plate comprises a liquid cooling plate body, the liquid cooling plate body is provided with a first channel and a second channel which extend along the first direction, and the first channel and the second channel are arranged at an interval along the second direction; the two ends, in the first direction, of the liquid cooling plate body are connected with the plugging pieces, and the plugging pieces are used for plugging the two ends, in the first direction, of the first channel and the second channel; the flow collecting structure is connected to the liquid cooling plate body in the third direction, a flow collecting cavity is formed in the flow collecting structure, the flow collecting cavity communicates with the first channel, and the flow collecting cavity is disconnected from the second channel; and orthographic projections of the current collecting structure and the liquid cooling plate body on a plane perpendicular to the third direction along the third direction are overlapped. Under the condition that the liquid cooling plate is used for the battery pack, the volume utilization rate of the battery pack can be remarkably improved.

The utility model discloses a phase-change material packaging structure, which is characterized in that a core material is used as a supporting carrier of a phase-change material, and a large amount of energy generated during thermal runaway of a battery is absorbed by the phase-change material in a phase-change process, so that heat spreading is avoided; the core material absorbing the phase change material is wrapped in the packaging film, and the heat sealing area on the periphery of the packaging film is bent after being subjected to hot pressing, so that the space occupied by the heat sealing area is reduced, the volume utilization rate of the packaging structure is improved, and the volume and the phase change enthalpy value of the phase change material can be increased in the space with the same size; and secondly, the packaging structure of the phase change material is simple, and compared with a packaging plate, no complex plate or grid structure exists, so that the cost and the weight of the part are reduced.

The utility model discloses a pole lug direct connection module which comprises a battery cell and pouring sealant, a pole lug body is fixed on the battery cell, a fixing plate is arranged on the lower side of the pole lug body, the lower end face of the fixing plate is flush with the lower end face of the battery cell, a supporting piece is vertically fixed on the upper end face of the fixing plate, an elastic piece is fixed on the supporting piece, and the elastic piece is fixed on the battery cell. And the tab body, the fixing plate, the supporting sheet and the elastic sheet are wrapped by pouring sealant to form an integrated structure. According to the tab direct-connection module, parts such as a tab support and a busbar are omitted, the tab direct-connection module has good insulation and voltage resistance characteristics after tab direct-connection, glue packaging and glue solidification, the tabs can be fixed in the whole vehicle using process without shaking, and due to the fact that related electrical structural parts are reduced, the design cost of the module is reduced, and the reliability of the module is improved. In addition, due to the fact that the number of structural parts, the number of material types and the number of technological procedures of the module are reduced, the production efficiency of products can be improved, and the automatic productivity of a production line and the volume utilization rate of the products are increased.

The utility model discloses a battery pack and vehicle, battery pack includes: battery cell subassembly, battery cell subassembly includes first battery cell, second battery cell and third battery cell, first battery cell along first direction both sides respectively fit with second battery cell and third battery cell, first battery cell along second direction cross section shape parallelogram shape, second battery cell along second direction cross section shape parallelogram shape, third battery cell along the second direction cross section shape parallelogram shape parallelogram shape parallelogram shape parallelogram shape parallelogram shape parallelogram shape parallelogram shape parallelogram shape parallelogram shape parallelogram shape; the cross section of the second battery cell and the cross section of the third battery cell in the second direction are right-angled triangles, so that the cross section of the battery cell assembly in the second direction is rectangular, and the first direction is perpendicular to the second direction. According to the battery pack disclosed by the utility model, the battery pack has better cruising ability, and the structural safety is ensured.

The utility model provides a cooling structure of a battery module and a battery pack. The cooling structure of the battery module comprises a first cooling assembly and a second cooling assembly which are mutually independent, the first cooling assembly comprises a liquid cooling plate arranged at the bottom of the battery module, and the liquid cooling plate is used for cooling the battery cell shell; the second cooling assembly is used for cooling a busbar assembly of the battery module, the second cooling assembly comprises a cooling support, a flow channel is formed in the cooling support, the cooling support is connected with the busbar assembly, and the flow channel is used for circulation of insulating cooling liquid. According to the cooling structure of the battery module disclosed by the utility model, the busbar assembly can be cooled, the temperature of the battery cell pole column area is reduced, the temperature difference between the battery cell pole column and the battery cell shell is reduced, and the temperature equalization performance of a battery module thermal management system is improved. And moreover, the risk of poor insulation can be effectively eliminated, and a good use effect is achieved.

The utility model provides a battery pack, and relates to the technical field of batteries. According to the battery pack provided by the utility model, the shell is provided with the first opening, the second opening and the third opening, the first opening is sealed by the corresponding third acquisition component, and the second opening and the third opening are sealed by the first acquisition component and the second acquisition component. Therefore, compared with the prior art, the battery pack provided by the invention has the advantages that the original side plate on the outer side is removed, and the BMS is adopted as the side plate, so that the volume utilization rate of the battery pack is favorably improved.

The present invention discloses an energy storage battery cabinet and an energy storage system having the same, wherein the energy storage battery cabinet comprises: a cabinet body, wherein the width W1 of the cabinet body, the depth D1 of the cabinet body and the height H1 of the cabinet body satisfy: 0.8≤W1 / D1 / H1≤1.2; a plurality of battery cells, wherein the plurality of battery cells are arranged in the cabinet body, wherein the length L of the battery cell, the thickness D of the battery cell and the width H of the battery cell satisfy: (D+H) / L≤0.2; wherein the volume V1 of each battery cell and the volume V3 of the cabinet body satisfy: 0.0009≤V1 / V3≤0.002. The energy storage battery cabinet according to an embodiment of the present invention controls the size parameters of the cabinet body and the size parameters of the battery cells, thereby improving the volume utilization rate and capacity density of the battery cells while taking into account the output voltage of the energy storage battery cabinet.

The embodiment of the present application provides a method for preparing a chip-type solid electrolytic capacitor, including: connecting a valve metal body to a valve metal wafer through a connecting colloid; sintering the valve metal wafer carrying the valve metal body; sequentially forming a dielectric layer and a cathode layer on the surface of the sintered valve metal body, so that the valve metal body dielectric layer and the cathode layer constitute a capacitor element; molding and encapsulating the valve metal wafer carrying the capacitor element, and exposing the cathode end of the capacitor element; connecting the cathode end plate to the cathode end of the capacitor element; cutting the valve metal wafer to form a chip-type solid electrolytic capacitor with an anode end plate and a cathode end plate. The present application realizes a chip-type solid electrolytic capacitor without a lead frame structure through the above method, improves the bonding strength between the valve metal porous body and the anode end plate, and at the same time improves the flatness and reliability of the cathode terminal.

The present invention belongs to the technical field of power batteries, and discloses a cooling plate assembly, a liquid cooling module and a battery pack, including a joint and two groups of cooling tube assemblies, the joint is provided with one or more groups of cooling channels, each group of cooling channels includes a first channel and a second channel running through a first direction, and a third channel and a fourth channel running through a second direction are provided, the first channel is connected to the third channel, and the second channel is connected to the fourth channel; two groups of cooling tube assemblies are arranged corresponding to each group of cooling channels, the two groups of cooling tube assemblies are respectively arranged on both sides of the joint along the first direction, and the two groups of cooling tube assemblies are respectively connected to the first channel and the second channel located on the same side of the joint; one of the third channel and the fourth channel is used for liquid inlet and the other is used for liquid outlet. The present invention improves the temperature uniformity performance, reduces the temperature difference between different cylindrical battery cells, improves the cooling effect, reduces the space occupied by the battery pack, improves the energy density of the battery pack, simplifies the structure, and reduces the cost.

The invention relates to the technical field of working medium storage, in particular to a follow-up outlet type overload induction storage box which comprises an upper shell, a lower shell, a wall penetrating connector base, a composite pipe and a liquid management device. The wall-penetrating joint seat is arranged on the tank wall in the middle of the storage tank main body; the liquid management device is arranged in the storage box main body and is welded with the wall-penetrating joint seat through a composite pipe; the liquid management device comprises a connecting hard pipe, a corrugated hose and a liquid collector which are sequentially welded. The liquid management device is of a follow-up structure, one end of the liquid management device is connected with the output pipeline of the storage tank, the other end of the liquid management device is provided with the liquid collector with a certain mass, and the liquid collector and the liquid collector are communicated through a flexible pipeline, so that the liquid collector can move along with liquid under the overload effect and is immersed in the liquid all the time, and continuous conveying of the liquid is guaranteed.

The utility model relates to a frame structure, a battery, electronic equipment and a vehicle, the frame structure comprises a frame body and a gland part, the frame body forms a battery compartment for accommodating the battery, the battery compartment is provided with a first opening and a second opening which are adjacent to each other, the gland part covers the first opening and is connected with the frame body, and the second opening is provided with a second opening which is adjacent to the first opening. The cover pressing piece is provided with an abutting face and an avoiding opening, the abutting face is used for abutting against the battery so that the battery can be fixed in the battery bin, and the avoiding opening is communicated with the interior of the battery bin through the second opening so that the battery can exit from the battery bin. Through the technical scheme, the frame structure provided by the utility model can be beneficial to improving the battery capacity and the battery volume utilization rate.

The invention discloses an external baffling shell-and-tube heat exchanger which comprises a shell, two tube plates, two end sockets, a plurality of heat exchange tubes, a shell side inlet, a shell side outlet, a tube side inlet and a tube side outlet, wherein the two tube plates and the end sockets are fixedly connected with the shell; the heat exchanger is characterized in that a plurality of partition plates are fixedly arranged in the shell to form a plurality of independent heat exchange chambers, and the heat exchange pipes penetrate through the partition plates; every two adjacent heat exchange chambers are connected through a drainage pipe fixedly connected to the outer side wall of the shell, and the drainage pipes are sequentially and fixedly connected to the outer side walls of the two opposite sides of the shell at intervals. The shell side can be effectively prevented from forming a flowing dead zone, the effective heat exchange area is increased, the heat exchange efficiency is improved, the temperature over-limit risk is effectively reduced, manufacturing is easy, the cost is low, the shell volume utilization rate is high, the overall economical efficiency of equipment is improved, and a large heat exchanger is easy to manufacture.

The utility model relates to the technical field of new energy automobile power batteries, and particularly discloses a module end plate structure of an integrated water-cooling pipeline, which comprises a box body provided with a cooling water port; a plurality of modules are arranged in the box body, the modules are connected through water pipes, and the head ends of the water pipes are connected with the cooling water openings; the module comprises a soft package battery cell, an upper cold plate is arranged at the upper end of the soft package battery cell, a lower cold plate is arranged at the lower end of the soft package battery cell, and the lower cold plate is connected with the bottom of the box body; a front end plate is arranged on one side of the soft package battery cell and is respectively connected with the upper cold plate and the lower cold plate; a water nozzle is arranged on the front end plate, the water nozzle is connected with the water pipe, a water cooling pipeline is arranged in the front end plate, and the water cooling pipeline is connected with the water nozzle. The arrangement difficulty of the internal structure of the battery pack is reduced, the volume utilization rate is improved, the module can be independently integrated with the water cooling plate to be installed in the box body, the module is convenient to disassemble, and the maintenance cost is reduced.

The application discloses a gas storage system, in particular to a gas storage system for compressed air energy storage power station and a construction method thereof, and belongs to the technical field of design and construction of energy storage power station gas storage building. The application provides a gas storage system for compressed air energy storage power station and a construction method thereof, which can significantly reduce the sealing requirement of equipment and the stress of the structure of the gas sealing layer. The gas storage system comprises a gas storage body and a constant temperature and pressure adjusting and maintaining mechanism, the inner cavity of the constant temperature and pressure adjusting and maintaining mechanism is connected with the inner cavity of the gas storage body, and the gas pressure and temperature stored in the gas storage body are always maintained within the specified pressure and temperature variation range under the regulation and control of the delivery and regulation medium of the constant temperature and pressure adjusting and maintaining mechanism. The construction method comprises the following steps: firstly, excavating the surrounding rock base reservoir, then grouting and reinforcing, constructing the waterproof layer, installing the water supplement pipe, the drainage pipe, the flower pipe and the corrugated steel lining layer, and finally pouring the flexible concrete lining layer and backfilling and grouting.

The present invention relates to the field of battery technology, and provides an electrochemical energy storage device and a manufacturing method. The electrochemical energy storage device includes an inner layer separator, a plurality of negative electrode sheets, a plurality of positive electrode sheets, a negative electrode lead structure, and a positive electrode lead structure. The inner layer separator has a plurality of first accommodating cavities and a plurality of second accommodating cavities. Each first accommodating cavity has a second opening. Each second accommodating cavity has a fifth opening. The negative electrode lead structure is arranged at the end side of the second opening of each first accommodating cavity and connected to each negative electrode sheet, and the positive electrode lead structure is arranged at the end side of the fifth opening of each second accommodating cavity and connected to each positive electrode sheet. The inner layer separator is continuously bent in the vertical direction, and the accommodating space of each electrode sheet is increased under the same volume, and the volume utilization rate is high. The "de-ear" structure is adopted, and each electrode sheet is led outward, so that the active material in the energy storage device accounts for a higher proportion and the energy density is higher.

The utility model discloses a small boiler heating cavity structure which comprises a main body shell and an upper cover, a heating cavity used for heating water flow is arranged in the main body shell, a plurality of baffles are arranged in the heating cavity, a plurality of heating flow channels are formed among the baffles, and the water flow enters from a water inlet, can flow through all the heating flow channels and is output from an output port. The heating chamber is provided with a baffle plate and a heating runner, water flow flows in from the water inlet and sequentially flows through the heating runner, the flowing path of the water flow is increased as much as possible in the limited space of the heating chamber, and the water flow is heated by the heating runner, is gradually heated to be gasified and is output from the output port; water flow in the heating chamber can continuously flow in from the water inlet, water vapor can be continuously output from the output port, the applicability is wide, the heating flow channel increases the heating area of the water flow, the temperature of the water flow rises fast, and the heating efficiency is improved.

The invention provides a direct coal liquefaction system and a direct coal liquefaction method. The direct coal liquefaction system comprises a coal-oil slurry preparation unit, a preheating mixing unit, a first direct coal liquefaction reactor, a second direct coal liquefaction reactor, a third direct coal liquefaction reactor, a first separation unit, a distillation tower, a hydrogenation unit, a second separation unit and a hydrogen supply unit, the technical problems of coal powder deposition, mineral substance deposition, low utilization rate, poor operation stability, solid particle powder entrainment and the like of the reactor in the existing direct coal liquefaction technology are solved, and the bottleneck problem restricting further amplification of the reactor is solved, so that long-period efficient operation of the direct coal liquefaction device is realized; the utilization rate and the single-series scale of the direct coal liquefaction reactor are improved, the energy utilization efficiency is improved, and energy conservation and carbon reduction are facilitated.

The present invention discloses an energy storage battery cabinet and an energy storage system having the same, wherein the energy storage battery cabinet comprises: a cabinet body, wherein the cabinet body has a first direction, a second direction and a third direction orthogonal to each other; at least two battery cell layer groups, wherein the at least two battery cell layer groups are arranged in the cabinet body and arranged along the third direction, wherein each of the battery cell layer groups comprises at least one battery cell in each of the first direction and the second direction, and wherein two battery cell layer groups adjacent to each other in the third direction abut against each other to limit each other in the third direction. According to an embodiment of the present invention, the battery cell layer groups of the energy storage battery cabinet are stacked so that the battery cell layer groups are mutually limited by themselves, and have the advantages of high energy density and large battery cell volume utilization.

The utility model discloses a battery pack, which comprises a plurality of battery modules, the plurality of battery modules are arranged at intervals along a first direction, each battery module comprises a plurality of single batteries stacked along a second direction, and the first direction is perpendicular to the second direction; the two sides of each battery module in the first direction are each provided with one sampling element, and the sampling elements extend in the second direction; an accommodating cavity is defined on the inner side of the frame, and the plurality of battery modules are arranged in the accommodating cavity; the middle beam is arranged in the containing cavity, the middle beam extends in the first direction and is connected with the frame, a plurality of grooves penetrating through the middle beam in the second direction are formed in the middle beam, the grooves correspond to the sampling elements in a one-to-one mode, the sampling elements are suitable for being embedded in the grooves, and the sampling elements are connected with the middle beam in a crossed mode. According to the battery pack disclosed by the utility model, more battery monomers can be arranged in an effective space, so that the energy density of the battery pack can be improved.

This utility model belongs to the technical field of energy storage battery pack lower enclosure, and in particular, an integrated liquid-cooled enclosure structure, comprising: a liquid-cooled upper plate; a liquid-cooled channel plate, the liquid-cooled channel plate being fixed to the bottom of the liquid-cooled upper plate, the liquid-cooled channel plate having multiple meandering channels for uniformly guiding fluid, an inlet connector with sealing performance installed at one end along the length direction of the liquid-cooled upper plate, and an outlet connector fixed to the side of the liquid-cooled upper plate symmetrical to the inlet connector; and multiple module crossbeams, the multiple module crossbeams being arranged sequentially at both ends and the center of the liquid-cooled upper plate, the liquid-cooled upper plate having profile crossbeams riveted to the bottom corresponding to the liquid-cooled channel plate, and vertical ribs fixed within the profile crossbeams for dispersing lateral stress during load-bearing. This utility model has a simple structure, effectively improves the integration of the energy storage pack lower enclosure, increases the battery pack volume utilization rate, improves assembly efficiency, reduces costs, and is convenient for users.

The invention discloses a linear ultrasonic motor with a longitudinal vibration composite configuration, and relates to the technical field of ultrasonic motors. The sandwich type piezoelectric vibrator comprises two sandwich type piezoelectric vibrators, wherein the two sandwich type piezoelectric vibrators are arranged in parallel; each sandwich type piezoelectric vibrator comprises a front elastic body, a clamping block, a rear elastic body and two pairs of ceramic chips respectively clamped between the front elastic body and the clamping block and between the clamping block and the rear elastic body, an electrode slice is clamped between each pair of ceramic chips, and an inverted V-shaped driving foot is connected between the front elastic bodies of the two sandwich type piezoelectric vibrators. According to the linear ultrasonic motor, the two sandwich type piezoelectric vibrators are arranged side by side in parallel, so that the overall structure is more compact, the overall volume utilization rate of the linear ultrasonic motor is effectively improved, two different excitation modes are adopted for excitation, and the actual application requirements of different precision devices can be met by selecting the proper excitation mode; and the use flexibility and the adaptability to the use environment of the linear ultrasonic motor are effectively improved.