49results about How to "Improve thermal management performance" patented technology

The invention belongs to the technical field of power battery cooling, and particularly relates to a flow control method and system for a liquid cooling system of an electric vehicle-mounted power battery, and the method comprises the steps: carrying out the parameterization of a geometric model of the liquid cooling system; establishing an equipment resistance model based on the equipment flow resistance characteristics; initializing flow distribution, constructing a dynamic flow distribution model, calculating the flow of each node and judging whether the flow meets a target requirement or not, and if not, readjusting the flow; calculating the resistance of each section, determining the total resistance of the pipeline, and checking the water pump lift; the flow uniformity is judged by calculating the pipeline resistance between the nodes, and if the flow is not uniform, the flow is redistributed or the pipeline design is optimized until the flow is uniform. Through flow control, the problems of non-uniform flow distribution and poor temperature consistency of multiple battery packs in the prior art are solved, the optimal working state of the power battery is ensured, overheating and overlarge temperature difference are avoided, and the operation efficiency, stability, durability and safety are improved.

The present invention discloses a wear-resistant liquid-cooled cable with an ultra-large current load for new energy, and belongs to the technical field of liquid-cooled cable processing. The present invention is used to solve the technical problem in the prior art that the wear resistance of liquid-cooled cables and the heat dissipation efficiency in high-temperature environments need to be further improved. A wear-resistant liquid-cooled cable with an ultra-large current load for new energy includes a plurality of conductors, and the exteriors of the plurality of conductors are sequentially provided with an insulating layer, a shielding layer, and an outer sheath layer; a heat exchange layer composed of a plurality of heat exchange tubes is provided between the shielding layer and the outer sheath layer, and the plurality of heat exchange tubes are all arranged in a spiral shape. The present invention improves the heat exchange performance inside the cable by preparing the insulating layer using a thermally conductive filler, and improves the thermal insulation and wear resistance of the cable outer sheath layer by preparing the cable outer sheath layer by synthesizing a composite polyolefin, thereby obtaining a liquid-cooled cable with high heat exchange efficiency inside, wear resistance outside, and suitable for high temperatures.

The battery module comprises a plurality of battery cells, the battery cells are arranged in the thickness direction of the battery cells, the battery cells are provided with end faces which are oppositely arranged in the height direction of the battery cells, and the battery cells are provided with first side faces which are oppositely arranged in the thickness direction of the battery cells; the plurality of heat dissipation plates are sequentially arranged among the battery cells, each heat dissipation plate comprises a first heat dissipation part and a second heat dissipation part which are connected with each other, the first heat dissipation part is attached to the first side surface, and the second heat dissipation part is attached to the end surface; the liquid cooling plate is arranged on the sides, close to the end face, of the battery cells, the liquid cooling plate is connected with the second heat dissipation part, and the technical problem that directional temperature difference exists in the battery cells in the battery heat dissipation structure is solved.

The utility model discloses a battery pack, which comprises a shell assembly, a battery pack and a battery pack, the multiple cross beams are arranged in the containing cavity and are arranged at intervals in the first direction; the battery cell modules are arranged between any two adjacent cross beams, and each battery cell module comprises a first module and a second module which are mutually stacked in a second direction; the first cold plate is arranged in the containing cavity, the first cold plate is located between the first module and the second module and penetrates through the multiple cross beams, and the first direction is perpendicular to the second direction. The battery pack disclosed by the utility model can meet the required electric quantity requirement, and is compact in structure, high in space utilization rate and high in safety.

The invention discloses a thermal management method and system of a power supply and an intelligent power supply, and the method comprises the steps: collecting m reference temperature data sets of m battery cells within a first preset time period; performing preprocessing operation on the m reference temperature data sets to obtain m temperature data sets; determining a first temperature value of the target power supply according to the m temperature data sets; predicting a predicted temperature value of the target power supply at the target moment according to the m temperature data sets and the first temperature value; determining a target working state of the target power supply according to the first temperature value and the predicted temperature value; and in a second preset time period, controlling a heat management module to perform heat management on the target power supply based on the first temperature value, the predicted temperature value and the target working state, so that the temperature of the target power supply returns to a preset temperature range. According to the embodiment of the invention, the thermal management effect of the power supply can be improved.

The invention discloses a monitoring device and method for a CTP battery liquid cooling system branch, the device comprises an integrated frame, a plurality of integrated liquid cooling cross beams, a plurality of shunting sealing fixing bolts and a plurality of shunting monitoring assemblies, and each shunting monitoring assembly comprises a perforated shunting sealing fixing bolt and a monitoring device; each integrated liquid cooling cross beam corresponds to one branch of the CTP battery liquid cooling system and is correspondingly provided with one shunting sealing fixing bolt and one shunting monitoring assembly; in a non-monitoring state, each shunting sealing fixing bolt is screwed on the corresponding integrated liquid cooling cross beam; and in a monitoring state, the shunting monitoring assembly is used for replacing the detached shunting sealing fixing bolt, is screwed on the corresponding integrated liquid cooling cross beam, and collects various data of the cooling liquid in the current branch based on the monitoring device. The device can accurately monitor the data of each liquid cooling branch, and the accuracy and convenience of liquid cooling branch monitoring are improved.

The PWM-based high-voltage PTC heater control method comprises the following steps: acquiring a heating request instruction of a user, and analyzing the heating request instruction; according to the analyzed heating request instruction, whether an IGBT in the PTC heater executes peak shifting starting or not is judged; when an IGBT (Insulated Gate Bipolar Translator) in the PTC heater does not execute peak shifting starting, acquiring heating power requested by a user according to the analyzed heating request instruction; calculating the target heat of the PTC heater according to the heating power request of the user and the IGBT switching period; and according to the target heat of the PTC heater, a PWM value for controlling the switching time of the IGBT is adjusted, and control over the high-voltage PTC heater is achieved. By adopting a closed-loop control strategy, the on-off states of the plurality of IGBTs can be dynamically adjusted according to an external power request, so that accurate heat control is realized, and high-efficiency operation of the high-voltage PTC heater under various working conditions is ensured. Meanwhile, by optimizing the PWM frequency and adjusting the switching time, the noise is effectively reduced, and the user experience is improved.

The utility model relates to vehicle energy recovery device technical field especially discloses a hybrid device with power recovery function, including engine, the drive shaft that coordinates with engine and the electric power generation all -in -one that is connected with drive shaft, electric power generation all -in -one is connected with electric energy storage module, still include worm and worm mechanism, shunt hybrid mechanism and transmission mechanism, transmission mechanism linkage shunt hybrid mechanism and worm and worm mechanism parallel operation hybrid mechanism and electric power generation all -in -one, the input of worm and worm mechanism is connected with the output of engine, shunt hybrid mechanism has two shunt input ends that are connected with worm and worm mechanism and electric power generation all -in -one coordination respectively, shunt hybrid mechanism is driven axle and vehicle's wheel system transmission connection, in the process that vehicle decelerates or brakes, the inertia braking moment of wheel system is driven electric power generation all -in -one and generates electricity via shunt hybrid mechanism, and the electric energy that electric power generation all -in -one generates is stored via electric energy storage module.

The present invention relates to the technical field of building curtain walls, and in particular to a heat-insulating and sound-insulating building curtain wall. The heat-insulating and sound-insulating building curtain wall comprises a frame assembly, a plurality of curtain wall assemblies and a plurality of connecting support rod assemblies. The installation process of the present invention is simple and quick, which reduces the installation time and labor costs. The installation steps are clear, the installation and maintenance efficiency is improved, and the installation and maintenance costs are reduced. In addition, a multi-point contact connection is provided to ensure the firmness and stability of the curtain wall assembly after installation, and to avoid accidental falling off. At the same time, the water-proof, sound-insulating and heat-insulating properties of the curtain wall are improved, the thermal management capability and structural stability of the curtain wall are enhanced, the service life of the curtain wall is extended, and the overall quality and aesthetics of the building are improved.

The utility model discloses a kind of high-precision RGB edge-emitting laser lamp group module, it is related to optoelectronic packaging technical field, including copper substrate, the top of copper substrate is fixedly connected with chip bracket, the top of chip bracket is fixedly connected with several T table type silicon prism, the top of chip bracket is fixedly connected with edge-emitting laser chip assembly, the top of copper substrate is installed with glass optical window, the bottom of glass optical window is coated with metal plating, the device is through structural integration design, optical integration optimization and all inorganic packaging process, effectively improve the light path precision of edge-emitting laser chip assembly, structural stability, packaging reliability and thermal management performance, while significantly improve the automation assembly efficiency and reduce manufacturing cost, especially suitable for high-resolution display, complex environment lighting and laser system in the scene with higher precision and reliability requirement.

The present invention provides a control method and system for a hybrid vehicle, the method comprising: obtaining vehicle operation data of the hybrid vehicle when the hybrid vehicle is running, the vehicle operation data including at least vehicle speed, slope, SOC and throttle opening; judging whether the hybrid vehicle is in a coasting state based on the vehicle operation data; and controlling the hybrid vehicle to maintain the current gear or switch back to a neutral gear according to the vehicle speed, SOC and slope when the hybrid vehicle is in a coasting state. In this solution, when it is determined that the hybrid vehicle is in a coasting state, the hybrid vehicle is controlled to maintain the current gear or switch back to a neutral gear according to the vehicle speed, SOC and slope, thereby reducing fuel consumption in the entire driving cycle and meeting the power demand of the entire vehicle, avoiding excessive engine reverse drag time, reducing the energy consumption of the entire vehicle and improving the thermal management effect of the engine.

The present invention relates to the field of functional fabrics, and provides a flame-retardant fabric with infrared shielding performance and a preparation method thereof. The fabric is prepared by a textile process from a blended yarn of a polyester composite fiber and a surface-modified polyimide composite fiber. The polyester composite fiber contains a magnesium hydroxide / zinc oxide composite filler, which is prepared by melt blending and spinning, and the surface-modified polyimide composite fiber is obtained by surface modification treatment of basic zinc carbonate. The zinc oxide particles and magnesium hydroxide nanowires in the magnesium hydroxide / zinc oxide composite filler act synergistically to enhance the flame retardancy and infrared shielding ability of the fiber; the use of surface-modified graphene improves the mechanical and thermal stability of the polyimide fiber. By reasonably regulating the fiber ratio and weaving density, the fabric has excellent mechanical properties, infrared shielding properties and flame retardant properties while ensuring flexibility, and has a wide range of application value.

This invention discloses a continuous-pulse column vector fiber laser cleaning system, comprising a laser generation module, a beam transmission and scanning module, and a motion control module. The laser generation module employs a continuous-pulse column vector laser, which integrates a control module capable of switching between continuous and pulsed output modes. It also integrates a polarization control system capable of freely switching between radial and angular polarization modes according to cleaning process requirements, and selecting to emit either a radially or angularly polarized beam. Within the reliable architecture of a time-sharing hybrid cleaning system, this laser cleaning system utilizes the unique spatial polarization and energy distribution characteristics of a column vector beam to replace the traditional fundamental mode Gaussian beam, achieving a significantly improved advanced laser cleaning system in terms of cleaning quality, process versatility, and overall efficiency.

The application discloses a winding inductance heat transfer pouring structure and method, which comprises a substrate, a heat conduction column is vertically arranged on the upper end surface of the substrate, a winding inductance is sleeved on the heat conduction column and located at the bottom of the substrate, a pouring cavity is arranged between the winding inductance and the heat conduction column, a pressing plate is detachably connected to the top of the winding inductance, a plurality of pouring openings are formed in the pressing plate and communicated with the pouring cavity, the winding inductance comprises an inductance magnetic ring, a first insulating film wrapped on the inductance magnetic ring, a second insulating film wrapped on the first insulating film and an inductance winding wound on the inductance magnetic ring, the inductance winding is located between the first insulating film and the second insulating film, and a plurality of pouring holes are formed in the first insulating film and the second insulating film and communicated with the pouring cavity. The application improves the heat dissipation efficiency and heat transfer capacity of the winding inductance and effectively solves the problem of heat accumulation of the winding inductance.

The application relates to the field of high-speed communication and information network technology, in particular to a space expandable photoelectric information processing device, which comprises a device body, the device body comprises a power board module, an information processing board module, an interface board module, an expansion information processing module and a processing board heat dissipation top cover, a shielding block is arranged in the interface frame, and the device body comprises the processing board heat dissipation top cover. The application can not only improve the complex processing technology, overcome the deficiencies of the existing technology in the aspects of efficiency, cost, precision, material utilization rate, environmental protection and the like, improve the modularization and expandability of the system, improve the photoelectric data processing capacity, realize high integration and small and light design, help improve the heat dissipation performance and environmental adaptability of the device, and help unify the information processing of multiple types of photoelectric loads.

The invention relates to the technical field of chip packaging heat dissipation, in particular to a thermal interface material for multi-chip packaging and a preparation method of the thermal interface material. The preparation method comprises the following steps that 1, a nano small particle area, a nano medium particle area and a micron large particle area are sequentially laid on a DBC substrate in a pulse laser deposition mode to form a gradient transition structure; 2, sintering the DBC substrate deposited in the step 1 on a heat sink; step 3, cooling the sintered DBC substrate to room temperature in an inert gas environment; and 4, a phase change material is injected into the sintered gradient transition structure, and a circle of epoxy resin is printed on the periphery of the gradient transition structure for sealing. According to the thermal interface material for multi-chip packaging provided by the invention, a continuous multi-layer pore structure is formed through the gradual change design of the particle size, so that the heat-conducting property, the condensate backflow capability and the interface stability are improved.

This application discloses a dual-channel heat collection plate heat dissipation structure for radar signal simulation equipment. By designing a dual-channel heat collection plate and optimizing the internal structure of the equipment, flexible arrangement and efficient heat dissipation of the radar signal simulation equipment are achieved. The equipment housing is divided into three independent spaces: a front compartment, a middle compartment, and a rear compartment. The heat-generating modules in each compartment conduct heat through the left and right heat collection plates, ultimately achieving forced heat dissipation through a fan. The heat collection plate adopts a sandwich structure, welded together from a shell with heat dissipation fins and a cover plate. After welding, an independent air duct is formed, achieving sealed heat dissipation. Part of the heat from the transceiver components is conducted to the equipment housing through the antenna unit, while another part is dissipated through the fan to the front compartment and then through the heat collection plate. This dual heat dissipation path meets the heat dissipation needs of the antenna transceiver unit. This invention solves the problems of difficult heat dissipation of electronic modules, limitations in equipment size, and heat concentration in the antenna transceiver unit in existing technologies.

This invention relates to the field of thermal management technology, and more particularly to a multimodal fluid-structure interaction (FSI) graded cooling fan module and its thermal management method. Its features include a stepped heat-conducting block with an embedded oscillating heat pipe, a sandwich-locked fan on the side of the stepped heat-conducting block, and a rectifier ring surrounding the stepped heat-conducting block. The blade tips of the sandwich-locked fan are connected to the side of the stepped heat-conducting block and are invertedly positioned around the oscillating heat pipe. The sandwich-locked fan is connected to a motor that drives its rotation. Through multimodal coupling, it improves thermal management efficiency; it employs a biomimetic leaf vein-like capillary structure to achieve efficient working fluid circulation in a small space, and, combined with centrifugal force, ensures stable working fluid reflux at high speeds; its modular design and efficient heat dissipation capabilities allow the thermal management system to achieve good heat dissipation at lower fan speeds, effectively reducing overall system energy consumption and noise.

The invention relates to the technical field of organic synthesis application, in particular to a microchannel reactor for nitration reaction of naphthalene and a reaction method.The microchannel reactor comprises a microchannel reaction module, a channel module, a mixed acid preparation module, a naphthalene organic solution storage module and a cooling module; by integrating the micro-channel reaction module, the channel module, the mixed acid preparation module, the naphthalene organic solution storage module and the cooling module, efficient and accurate control of the naphthalene nitration reaction process is realized. Wherein the introduction of the cooling module significantly improves the thermal management capability of the system, and effectively solves the local overheating phenomenon, thereby reducing the generation of by-products, improving the purity and yield of the product, and further solving the problem that the by-products are increased due to the local overheating phenomenon in the production process of nitration of naphthalene by the microchannel reactor.

This invention relates to the field of thermal management technology, and more particularly to a multimodal fluid-structure interaction (FSI) graded cooling fan module and its cooling method. It includes a sandwich-structured stationary wheel, a flow-guiding coupling wheel, and a sandwich-structured moving wheel, all coaxially arranged, with a phase change material filling the spaces between them. The sandwich-structured moving wheel is mounted on the upper end of the shaft, and the flow-guiding coupling wheel is also located at the lower end of the shaft. The sandwich-structured stationary wheel is positioned below the flow-guiding coupling wheel. Through multimodal coupling, thermal management efficiency is significantly improved; a biomimetic leaf-vein-like capillary structure achieves efficient working fluid circulation in a small space, and combined with centrifugal force, ensures the stability of working fluid reflux at high speeds; it features both self-driven and forced-driven modes, automatically matching the cooling intensity according to the heat source load to achieve good cooling effects, and supports heat recovery, reducing overall system energy consumption and noise; through modular design, assembly is convenient, and it is suitable for the thermal management needs of high-power-density equipment.

The utility model provides a cooling and lubricating system of a hybrid framework and a vehicle. The system comprises a driving lubricating oil channel, a branch oil channel, a first cooling cavity, a second cooling cavity, an oil discharge channel, an oil suction port and an oil cooling circulation mechanism. The active lubricating oil channel is communicated with the first cooling cavity, and the active lubricating oil channel and the first cooling cavity are combined to form an active cooling and lubricating framework; the branch oil duct is communicated with the second cooling cavity, and the branch oil duct and the second cooling cavity are combined to form a passive cooling lubricating framework; the oil discharge channel is communicated between the first cooling cavity and the second cooling cavity, and excessive oil in the second cooling cavity flows to the first cooling cavity through the oil discharge channel; the oil suction port is formed in the bottom of the first cooling cavity, one end of the oil cooling circulation mechanism communicates with the oil suction port, and the other end of the oil cooling circulation mechanism communicates with the driving lubricating oil channel and the branch oil channel.

The utility model discloses an integrated installation structure of intelligent driving vehicle controller belongs to heavy truck technical field, including ADU wisdom driving controller, VCU whole vehicle controller and ADU water -cooling controller, the lower part of VCU whole vehicle controller and ADU water -cooling controller is fixed in the two upper beam frames of left and right symmetry and parallel, the lower part of ADU wisdom driving controller is fixed in the two lower beam frames of left and right symmetry and parallel, the upper beam frame is located the top of lower beam frame and both sides are connected through the side support of inverted U shape, VCU whole vehicle controller, ADU water -cooling controller with ADU wisdom driving controller form the upper and lower layer distribution and form the heat dissipation space in the middle. This controller integrated installation structure not only has optimized space layout and heat dissipation effect, still has promoted assembly efficiency, assembly quality and system maintainability greatly, has overcome the technical problem of many aspects such as the structure dispersion, the installation complicated, the heat dissipation is limited in prior art.

The invention discloses a method and a device for manufacturing a solder mask area on the surface of a Ni layer of a copper-clad plate, and aims to solve the technical problems of low integration level of components and easy introduction of redundant materials during processing due to the fact that the solder mask area cannot be controlled when the surface of the Ni layer of the copper-clad plate is processed in the prior art. According to the method, the copper-clad plate is placed in the resistance welding area auxiliary device to be subjected to two rounds of plasma cleaning, the first round is carried out in the inert atmosphere, the second round is carried out in the oxidizing atmosphere, resistance welding area treatment on the surface of the copper-clad plate and accurate control over the resistance welding area are achieved, and therefore the integration degree of components is improved, and introduction of redundant materials during machining is reduced. The device comprises the baffle plate and the copper-clad plate placing mold, the copper-clad plate is fixed and covers the rest part, and only the solder mask area is exposed in a processing environment, so that the accurate processing of the solder mask area is realized.

The invention discloses a single battery and a battery pack, and belongs to the technical field of power batteries, the single battery comprises a battery body, a first shell and a first hollow part, the battery body has a first direction, a second direction and a third direction which are intersected with one another, and the first shell covers the battery body; the first hollow part penetrates through the battery body and the first shell along a first direction and is connected with the first shell; the first hollow part comprises two first connecting plates and two second connecting plates; the two first connecting plates and the two second connecting plates in the first hollow part are connected end to end at intervals to form a frame-shaped structure, and the frame-shaped structure penetrates through the battery body and the first shell and is connected with the first shell to form a concentric-square-shaped structure for accommodating the battery body. The rectangular-ambulatory-plane structure is matched with the cooling plate, so that the two first connecting plates can be cooled by the single cooling plate, the heat dissipation area of the single battery is increased, and the cooling effect is improved.

This application relates to the field of battery technology, and more particularly to a battery pack. The battery pack includes a housing, a cover, a heat spreader, a cooling component, and multiple battery cells. The housing has mounting slots; the cover is located at the opening of the mounting slot; each battery cell is spaced apart in the mounting slot, and each cell has a shoulder at the end furthest from the bottom of the slot; the heat spreader connects to each shoulder; the cooling component is located on the side of the heat spreader facing away from the shoulder, and a cooling channel is formed inside the cooling component, through which a cooling medium flows to achieve heat exchange with the heat spreader. This battery pack, by incorporating a combined heat dissipation structure of a heat spreader and a cooling component at the shoulder, firstly achieves targeted heat dissipation in this core heat-generating area, reducing heat accumulation at the shoulder from the source, avoiding the generation of thermal island effects, effectively improving the overall thermal management performance of the battery pack, slowing down cell aging, and extending the battery pack's service life.

The embodiment of the invention provides a manufacturing method of a non-circular section core hot partition potting film capacitor, and the method comprises the steps: determining the dielectric film thickness of a metallized film, the sheet resistance of a metallized electrode, and a winding tension window according to the obtained working condition of the capacitor; performing multi-layer continuous winding on the metalized film along the radial direction of the mandrel of the non-circular structure to obtain an initial capacitor core with a non-circular cross section; performing metal paint spraying and crimping treatment on the initial capacitor core with the non-circular cross section to form an end face electrode, completing fixation of a leading-out terminal, and obtaining a capacitor core led out by the end face electrode; based on the capacitor core, obtaining core non-circular cross section geometric characteristic parameters, the number of layers of a metallized film and a target working frequency; and carrying out hot zoning through presetting a hot zoning intelligent discrimination neural network model, and determining an encapsulation material zoning distribution scheme, thereby carrying out zoning pouring and radial heat dissipation path construction, and obtaining a final capacitor. According to the scheme, the heat management efficiency can be improved.

This utility model discloses a connector for charging and swapping new energy vehicles. The connector includes a connector housing, within which a signal connection terminal is located. High-voltage terminals are located on both sides of the signal connection terminal within the connector housing. A protective portion for enclosing the high-voltage terminals is provided on the back of the connector housing. A heat-conducting sleeve is provided within the protective portion and fitted onto the outer wall of the high-voltage terminals. The inner wall of the heat-conducting sleeve has several equally spaced heat-conducting sections embedded in the outer wall of the high-voltage terminals. The outer wall of the heat-conducting sleeve has several heat-dissipating fins evenly distributed along the circumference, passing through the protective portion. The heat-conducting sections increase the contact area between the heat-conducting sleeve and the high-voltage terminals, improving heat conduction efficiency. The heat-dissipating fins increase the contact area with air, enhancing heat exchange capacity. The guide channel structure expands the contact range between the heat-conducting sleeve and air, preventing heat accumulation and improving overall heat dissipation performance.

The application relates to the technical field of semiconductor devices, in particular to a high-efficiency SiP power module which comprises a ceramic substrate, a metal frame, a metal cover plate and a plurality of power units; each power unit comprises a MOSFET, a transformer, a high-voltage capacitor and a high-voltage diode, an NTC thermistor, a PTC thermistor, an electrically-controlled variable resistor, a voltage-dividing resistor, a filter capacitor and a micro MCU; the NTC thermistor is connected in series on a source path of the MOSFET and is connected through a voltage-dividing circuit and the micro MCU; the PTC thermistor is connected in parallel with the source and the drain of the MOSFET; the micro MCU outputs a resistance value adjustment amount of the electrically-controlled variable resistor by analyzing voltage and resistance change conditions in the circuit, and adjusts the resistance value of the electrically-controlled variable resistor by using the resistance value adjustment amount. The application improves the heat management capability of the SiP power module and avoids local temperature imbalance.

The application discloses a battery lower box, a battery box, a battery pack and a vehicle. The battery lower box comprises a shell and a flow channel plate. The shell comprises a bottom shell wall and a side shell wall arranged on the side of the bottom shell wall. The flow channel plate is a non-metal flow channel plate. The flow channel plate is located on the side of the bottom shell wall away from the side shell wall, and the flow channel plate is fixedly connected with the bottom shell wall. The battery lower box can reduce the weight and improve the thermal management effect on the battery cell through structural optimization.

The battery pack comprises a box body, an adjusting assembly and a plurality of battery cell modules, the box body is provided with a containing cavity, an air inlet and an air outlet, the air inlet and the air outlet are formed in the two opposite ends of the box body and communicate with the containing cavity, the battery cell modules are arranged in the containing cavity, and the adjusting assembly comprises at least two moving parts and at least two supports; the at least two moving parts are fixed to the two opposite ends of the battery cell modules, the at least two supports are arranged at the two opposite ends in the containing cavity in the first direction, the supports extend in the second direction, the moving parts are movably connected with the supports and used for adjusting the distance between the multiple battery cell modules in the second direction, the first direction is the direction from the air inlet to the air outlet, and the second direction is the direction from the air outlet to the air outlet. The second direction is perpendicular to the first direction, and the technical problem that the heat dissipation effect of an existing air-cooled battery system cannot be adjusted according to requirements is solved.