254 results about "Thermal Battery" patented technology

The invention discloses a high-heat-power thermoelectric cell hydrogel for low-grade heat energy collection and a preparation method thereof, and belongs to the technical field of heat energy recovery. The polyacrylamide hydrogel is selected as a substrate of the thermoelectric cell hydrogel, so that a hydrogel internal structure which is easy to regulate and control can be obtained; excellent hydrogel stretchability is obtained by using a cross-linking agent and an initiator with relatively low concentration; potassium ferricyanide and potassium ferrocyanide are used as redox ions to generate a thermoelectric effect, so that stable P-type thermal power is obtained; by using guanidine hydrochloride, the solvation entropy difference between potassium ferricyanide and potassium ferrocyanide is enlarged, and the thermal power of the hydrogel in the thermoelectric cell is greatly improved; sodium pyrrolidone carboxylate is used, so that the concentration of ions in the hydrogel is further improved, the conductivity of the thermoelectric cell hydrogel is improved, meanwhile, a hydrogen bond network between water molecules is destroyed, and the water-retaining property of the thermoelectric cell hydrogel is improved.

The present application belongs to the field of machine vision defect detection, and in particular to a thermocell electrode sheet vision defect detection method and a vision defect detection device. Product size information of a thermocell electrode sheet is obtained, and the field of view of a camera is configured. A thermocell electrode sheet to be detected is placed on a detection platform, front surface images, side surface images, back surface images, and inner hole images of the thermocell electrode sheet are captured by multiple direction detection cameras, and are processed to obtain the to-be-detected images of the front surface images, the side surface images, the back surface images, and the inner hole images. According to the to-be-detected images of the front surface images, the side surface images, the back surface images, and the inner hole images, a trained YOLO8 recognition model is used to describe and determine defects.

The invention relates to a thermal management system of an electric vehicle, and provides a system capable of preheating a battery even if a driving motor of the electric vehicle is not started. According to one embodiment, a heat management system (1) for an electric vehicle is provided with: a travel motor (12); an electric pump (30) that pressurizes and conveys the heat medium; a battery (2) that supplies power to the travel motor (12) and the electric pump (30); a first circulation circuit (20B) for the heat medium, the first circulation circuit (20B) passing through the travel motor (12) and the battery (2); and a control device (3). The control device (3) is configured to drive the electric pump (30) to pressurize and feed the heat medium to the first circulation circuit, heat the heat medium by the electric pump (30), and heat the battery (2) by the heat medium when a predetermined low-temperature condition is satisfied before the travel motor (12) is started.

The invention provides a pouring mold for thermal battery shell processing, and belongs to the technical field of thermal battery processing. Comprising a mold body, a fixed mold body is arranged at the top end in the mold body, a movable mold body is arranged at the bottom end in the fixed mold body, pouring gates are formed in the bottom ends of the periphery of the fixed mold body, mold cavities are formed in the centers of the contact surfaces of the fixed mold body and the movable mold body, and exhaust grooves are formed in the four corners and the opposite sides of the outer sides of the two mold cavities; an auxiliary pouring assembly is arranged in the bottom end of the fixed mold and used for assisting in material pouring. A vacuum pumping assembly is arranged on the outer side of the auxiliary pouring assembly and is used for pumping gas in the cavity; a condensation assembly is arranged at the bottom end of the interior of the movable mold and used for cooling the movable mold. And the vacuum pumping system is communicated with the exhaust groove, gas in the cavity is pumped before pouring, bubble retention is reduced, and the compactness of the shell is improved.

A heating system includes a thermal battery having a storage container configured to hold a first fluid and an opening configured to substantially expose the first fluid to atmospheric pressure. A fluid conductor is disposed through the first fluid and extends from an inlet point at the storage container to an outlet point at the storage container. The fluid conductor is configured to receive a second fluid at a first temperature at the inlet point and to supply the second fluid at a second temperature higher than the first temperature at the outlet point. Thermal energy stored in the first fluid is transferred to the second fluid through the fluid conductor while the first fluid remains substantially non-pressurized. The arrangement enables efficient on-demand heating while decoupling thermal storage from pressurized fluid delivery.

The invention belongs to the technical field of thermal batteries, and particularly relates to a preparation method and application of a copper fluoride-based heterojunction thermal battery positive electrode material. According to the invention, fluorides with different phases and different band gaps are utilized to form a heterogeneous interface microcosmically, an electron circulation directional electric field is formed at the inhibition interface, migration of electrons and ions is accelerated, and the ion characteristics of the fluorides are improved. According to the thermal battery positive electrode material provided by the invention, the voltage of a unit battery can be remarkably increased, charge and ion transfer of the positive electrode material can be improved, so that the material can bear large pulse current and has relatively high specific capacity, and the material has good adaptability to existing electrolytes in the market at present and has a relatively high voltage platform and relatively high specific capacity. According to the invention, the conductivity of the reaction product is further enhanced by using the copper elementary substance generated by the preferential reaction of copper fluoride, and an ion transmission channel is constructed by using the copper elementary substance generated by the preferential reaction of copper fluoride as a support frame, so that the copper fluoride-based composite material has high-potential and high-power discharge capability.

The invention discloses a function detection device and method for a separation pin, an electric detonator and a thermal battery, and relates to the technical field of avionics, the function detection device comprises a control panel, and a power supply module, a low-resistance test module and a voltage and current test module which are installed on the control panel, and an externally used 220V power supply is sent to the power supply module through a fuse F1 and a power switch S1; after voltage stabilization and filtering of the power supply module, the voltage is converted into a required 27V linear direct-current power supply and instrument working voltage 24V, the instrument working voltage 5V, the 27V linear direct-current power supply is sent to a control panel through a fuse F2 and a 27V voltage switch S2, and the 27V linear direct-current power supply is connected in parallel with a 27V voltmeter PV0; instrument working voltage 24V is respectively sent to a control panel and a state indicating lamp through fuses F3 and F4, and instrument working voltage 5V is sent to a voltage and current test module and an instrument of the control panel. The device is easy to operate, accurate in measurement, capable of meeting detection requirements, safe and stable in operation and convenient to carry.

This invention relates to the field of battery management unit technology for new energy vehicles, specifically to a BDU assembly and battery pack. The technical solution includes a buffer-cooling battery housing, a BDU assembly, and a battery pack. The buffer-cooling battery housing includes a bottom outer shell, a rear BDU shell mounted on the rear end of the top surface of the bottom outer shell, and battery side shells mounted on both sides of the top surface of the bottom outer shell. A breakage deflection energy-absorbing structure is installed between the battery side shells and the rear BDU shell. The breakage deflection energy-absorbing structure includes a fixing clip, and a ramp heat exchange duct is located inside the rear BDU shell. The beneficial effect of this invention is that when the rear BDU shell is subjected to a severe impact, the fixing clip will break, and then the rear BDU shell will push the BDU assembly to slide along the surface of the ramp heat exchange duct to the upper part of the battery pack. Simultaneously, the rear end of the bottom outer shell, the rear end of the top outer shell, and the buffer-folding heat-conducting structure will deform to absorb the impact force during the collision, thereby protecting the BDU assembly.

A monitor is provided, which is capable of continuously monitoring a monitoring target in a batteryless and maintenance free manner even with a small storage capacity. The monitor is a device using, as a sensor, a thermal battery including a thermoelectric power generation element which outputs a voltage according to a temperature difference between a temperature of an atmosphere covering the monitoring target and a temperature of a contact part with the monitoring target. The monitor includes a boost circuit outputting a boost voltage obtained by boosting a voltage input from the thermal battery; an energy storage element connected to an output port of the boost circuit, and storing power supplied from the thermal battery as a sensor and boosted by the boost circuit; a voltage detection circuit outputting a control signal which includes signal levels respectively corresponding to whether or not the detected boost voltage exceeds a predetermined voltage; and a switch opening and closing a path connecting a first terminal and a second terminal connected to the output port.

The invention discloses a molten salt electrolyte, a high-voltage thermal battery monomer and a preparation method. The molten salt electrolyte comprises a base electrolyte and at least one additive, wherein the basic electrolyte is prepared from LiF and Li2SO4; the additive is selected from any one or more than two of KF, NaF, CsF, KCl, NaCl, CsCl, Li2O, LiClO4, NaClO4, KClO4, CsClO4, K2SO4, Na2SO4, Cs2SO4, LiKSO4, LiNaSO4, LiCsSO4, K2CO3, Na2CO3, Cs2CO3, KPO3, NaPO3, CsPO3, Na3PO4, K3PO4 and Cs3PO4, and the additive is selected from any one or more than two of KF, NaF, CsF, KCl, NaCl, CsCl, Li2O, LiClO4, NaClO4, KClO4, CsClO4, K2SO4, Na2SO4, Cs2SO4, LiKSO4, LiNaSO4, LiCsSO4, K2CO3 The electrolyte is suitable for a high-voltage electrochemical system of a thermal battery, and has excellent high-temperature stability and compatibility with a high-potential positive electrode material.

The invention provides a heat management integrated system of a hybrid energy commercial vehicle, and belongs to the technical field of heat management of new energy hybrid vehicles. The system comprises an engine cooling subsystem used for conducting heat dissipation on an engine body and inlet air; the passenger compartment heat management subsystem is used for selectively utilizing the waste heat of an engine, the refrigerating capacity of a refrigerating system or an electric heater to achieve refrigerating and heating of a passenger compartment through pipeline coupling and valve control; the battery thermal management subsystem is thermally coupled with refrigerating circuits of the engine cooling subsystem and the passenger compartment thermal management subsystem through a heat exchanger and a Chiller respectively, so that the temperature of a power battery is adjusted by utilizing waste heat of an engine, heat of an electric heater or cold of a refrigerating system; and the motor electric control thermal management subsystem is used for carrying out independent heat dissipation on the driving motor and an electric control part. The thermal management integrated system with high integration level and low energy consumption ratio is provided for the hybrid energy vehicle.

An ablutionary system having a means configured to receive a water supply 107 and operable to provide a principle stream 109 at a controlled temperature, wherein the means includes a thermal battery 1

The application discloses a kind of modular thermal battery energy storage devices based on biochar and preparation method thereof.The device includes heat preservation shell, biochar-based composite heat storage core, electric heating system, heat exchange release system and optional thermal photovoltaic (TPV) power generation unit.The heat storage core is made of biochar from agricultural and forestry waste by low-temperature pyrolysis, crushing, and compounding with graphite powder and silicon carbide particles, then high-temperature graphitization treatment is carried out, which can store heat at 1500℃-2200℃ for a long time, the mass loss rate is less than 0.5% at 1800℃ for 100 hours, and the thermal conductivity is not less than 8 W / (m·K).The application uses biochar, which is cheap and has carbon negative characteristics, to replace traditional graphite heat storage medium, significantly reducing material cost and life cycle carbon footprint, and realizing rapid deployment through modular design, suitable for industrial high-temperature steam, drying, chemical reaction and other scenes of heat energy storage and release, and can realize combined with TPV unit to realize heat and power supply.

The application discloses a kind of refrigerant direct cooling direct heating battery systems and control method, system includes control unit, detection unit, execution unit and refrigerant circulation loop;Refrigerant circulation loop includes sequentially through pipeline connection and form circulation loop compressor, second heat exchanger, the cold plate of battery system and first heat exchanger;Detection unit includes pressure detection piece and temperature detection piece;Execution unit includes first electromagnetic valve, first expansion valve, second expansion valve and third electromagnetic valve;First electromagnetic valve is connected in parallel on second heat exchanger;First expansion valve is located between first heat exchanger and the cold plate of battery system;Second expansion valve and third electromagnetic valve are connected in parallel to each other and located between cold plate and the low pressure side of first heat exchanger;Control unit is used to control execution unit, compressor, second heat exchanger and first heat exchanger according to temperature signal and pressure signal, to realize direct cooling mode or direct heating mode.The application has the advantages of accurate control, efficient heat distribution etc..

The invention discloses a low-melting-point high-transference-number electrolyte material for a fluorine ion thermal battery and a preparation method thereof.The preparation method comprises the steps that lithium fluoride, sodium fluoride and potassium fluoride are mixed in proportion and subjected to first calcination treatment for 4-6 h at the temperature of 500-600 DEG C, an obtained product is rapidly cooled, and powdery ternary fluoride eutectic salt is obtained; mixing cesium fluoride with the ternary fluoride eutectic salt in proportion, performing secondary calcination heat treatment for 4-6 hours at the temperature of 600-700 DEG C, and then quickly cooling to obtain powdery quaternary fluoride eutectic salt; and mixing the quaternary fluoride eutectic salt with magnesium oxide of which the mass is 0.8-1.2 times that of the quaternary fluoride eutectic salt, carrying out third calcination treatment at 400-600 DEG C for 3-5 hours, and then rapidly cooling and crushing. By adding the high-atomic-number cation salt, the fluorine ion transference number of the fused salt is improved, the multi-element eutectic salt is obtained, the salt melting point is reduced, the working temperature range of the fluorine ion thermal battery is widened, and the specific energy of the battery is improved.

The invention provides a battery and an electric device. The battery comprises a plurality of battery packs, at least two lateral heat exchange assemblies and a battery box. The plurality of battery packs are arranged in sequence, and each battery pack comprises a plurality of single batteries. Lateral heat exchange assemblies are arranged between at least part of the battery packs and the adjacent battery packs in the multiple battery packs, each lateral heat exchange assembly comprises a lateral heat exchange plate and a current collector arranged at at least one end of the lateral heat exchange plate, and the lateral heat exchange plates are provided with heat exchange runners where heat exchange media flow. The current collector comprises a current collecting cavity in fluid circulation with the heat exchange flow channel and a current collecting pipe used for guiding a heat exchange medium into the current collecting cavity or guiding the heat exchange medium out of the current collecting cavity so as to conduct heat exchange on the battery pack. The battery box is provided with a containing cavity used for containing the multiple battery packs and comprises a bottom plate located at the bottoms of the multiple battery packs. The collecting pipes of all the lateral heat exchange assemblies extend in the height direction and are connected with the bottom plate.

The invention relates to the field of thermal battery manufacturing, and discloses automatic punching equipment and method for an asbestos ring for a thermal battery. The equipment comprises a rack, a movable platform, a punching mechanism and a ring collecting mechanism. The moving platform is driven by a servo motor to achieve accurate positioning and pressing of asbestos paper. The punching mechanism drives an inner cutting die and an outer cutting die which are coaxially arranged through an impact air cylinder to complete punching. During demolding, the jacking driving mechanism drives the inner cutting die to eject out the ring piece, the outer diameter of the asbestos ring is larger than the caliber of the outer cutting die through the elasticity of the asbestos ring, and therefore the asbestos ring automatically falls off and is collected through the ring collecting device. The full-process automatic production is realized, the problems of low manual punching efficiency and poor product consistency are solved, and the production efficiency and the product quality are remarkably improved.

The invention provides a low-melting-point high-conductivity molten salt electrolyte and application thereof. The molten salt electrolyte is prepared from the following components in percentage by weight: 24.0 to 31.0 percent of LiCl, 45.0 to 55.0 percent of LiBr, 15.0 to 20.0 percent of KBr and 4.0 to 10.0 percent of KCl. According to the invention, the LiCl-LiBr-KBr-KCl molten salt electrolyte with the melting point of 325.0 + / -3.0 DEG C and the ionic conductivity not lower than 2.87 S / cm is obtained for the first time. Compared with a common LiCl-KCl electrolyte, the fused salt electrolyte has the advantages that the melting point is reduced by 28.0 DEG C, the ionic conductivity at 500.0 DEG C is obviously improved by at least 1.02 S / cm, the thermal stability is high, and the fused salt electrolyte has very important application value in the field of fused salt thermal batteries.

The utility model discloses a thermal battery activation control tool which comprises an air cylinder mounting plate, an upper mounting plate, a bottom plate and an activation assembly, a pressure reducing valve, an electromagnetic valve and an air cylinder are arranged on the air cylinder mounting plate, the air cylinder mounting plate is connected with the upper mounting plate through a screw rod, the upper mounting plate is connected with the bottom plate through a supporting rod, and the bottom plate is connected with the activation assembly. The activation assembly is arranged on the thermal battery, and the upper mounting plate is connected with the thermal battery. The air pressure is adjusted through the pressure reducing valve, air flows to the electromagnetic valve from the air pipe, the electromagnetic valve is remotely controlled to change the air flow channel so as to control stretching and retracting of the air cylinder, the drawing ring is installed on the air cylinder, the drawing ring is connected with the plug pin through the drawing line, and the plug pin is pulled out and is not limited by the plug pin due to movement of the air cylinder. And the activation rod impacts the thermal battery primer under the guide of the sliding chute and the action of the spring to complete battery activation. And an operator can remotely control the tool, so that the safety of the activation process is ensured.

The invention relates to an n-p type hydrogel thermogalvanic battery module as well as preparation and application thereof. The n-p type hydrogel thermogalvanic battery module comprises an n type hydrogel thermogalvanic battery and a p type hydrogel thermogalvanic battery, wherein hydrogel in the n-type hydrogel thermogalvanic battery is a network skeleton, the n-type hydrogel thermogalvanic battery is constructed by Fe < 3 + > / Fe < 2 + > redox ion pairs, hydrogel in the p-type hydrogel thermogalvanic battery is a network skeleton, and Fe < 3 + > / Fe < 2 + > and carboxylate are complexed to construct the p-type hydrogel thermogalvanic battery. The n-p hydrogel pyrogalvanic battery module provided by the invention has high thermoelectric performance and can be applied to the field of information encryption.

The invention discloses a process method for dispensing a thermal battery cover assembly, which adopts a step-by-step dispensing process for the thermal battery cover assembly without an electric ignition head, and comprises the following steps of: firstly, bottoming each pole by using epoxy resin AB glue, and blocking assembly gaps among a nut, a gasket, a wire and a flow guide strip, so as to fundamentally prevent glue permeation; after primary curing, other glue solutions are coated to enhance the insulation and high temperature resistance; and finally, reinforcing dispensing is carried out on the root part and the intersection part of the wire. According to the invention, the risk of glue permeation of the pole is effectively solved, and the structural strength, the insulation reliability and the wire connection stability of the assembly are remarkably improved, so that the quality and the safety of a thermal battery product are ensured.

The invention provides a steam supply system for a thermal battery. The steam supply system comprises a high-temperature heat exchange medium storage tank; a high-temperature inlet of the first heat exchanger is connected with an outlet of the high-temperature heat exchange medium storage tank, and the low-temperature side of the first heat exchanger is configured to provide energy needed by steam. An inlet of the low-temperature heat exchange medium storage tank is communicated with a high-temperature outlet of the first heat exchanger; according to the heat pump circulation unit, a low-temperature inlet of a second heat exchanger communicates with an outlet of a low-temperature heat exchange medium storage tank, and a low-temperature outlet communicates with a high-temperature heat exchange medium storage tank. An inlet of the low-temperature expansion machine communicates with a high-temperature outlet of the second heat exchanger. An inlet of the high-temperature compressor communicates with an outlet of the low-temperature expansion machine, and an outlet of the high-temperature compressor communicates with a high-temperature inlet of the second heat exchanger. By integrating the heat pump cycle unit, the power cycle unit, the steam supply unit and the fused salt heat storage and release unit, multifunctional cooperation of electricity-heat conversion, heat energy storage, electricity generation and steam supply is achieved, and the system is suitable for power grid peak regulation, industrial waste heat utilization, regional energy supply and other scenes.

The utility model relates to a large-area heat dissipation battery pack, which belongs to the technical field of energy storage and comprises a central channel cold plate and side cold plates, a plurality of side cold plates capable of being attached to battery cells are distributed on two sides of the central channel cold plate, and a liquid inlet and a liquid outlet are vertically distributed at the end of the central channel cold plate. An upper cavity and a lower cavity which are respectively communicated with the liquid inlet and the liquid outlet are distributed in the central channel cold plate up and down; a flow channel is arranged in the side cold plate and communicated with the upper cavity and the lower cavity, or the upper cavity and the lower cavity are communicated, and the side cold plate is provided with a heat conduction structure connected with the central channel cold plate. The heat dissipation efficiency is improved, the battery pack is prevented from being damaged, the service life is prolonged, and the safety is enhanced.

The invention belongs to the technical field of material preparation, and particularly relates to a preparation method and application of a nanoscale lithium-silicon alloy. Silane gas and diluent gas are mixed and injected into a plasma thermal field generated by a radio frequency plasma generator to generate silicon atoms, then inert gas serves as carrier gas, a lithium source is fed into the plasma thermal field to generate lithium atom steam, and the silicon atoms and the lithium atom steam are alloyed in the high-temperature thermal field; under the driving of cooling airflow, the lithium-silicon alloy particles enter the cyclone classification chamber through high-temperature and low-temperature cooling areas, the unreacted lithium source and the large-particle-size lithium-silicon alloy particles are retained in the cyclone classification chamber, and the small-particle-size lithium-silicon alloy particles are brought into the collection chamber, are adsorbed on the surface of the filter and are blown off by periodic back-blowing airflow; lithium silicon alloy powder to be coated is obtained; and finally, the nano lithium silicon alloy to be coated is introduced into the fluidized bed, silicon and carbon coating is conducted through a vapor deposition method, the lithium silicon alloy with the inner coating layer being element doped silicon and the outer coating layer being carbon is prepared, and the alloy can be used as a thermal battery, a solid-state battery negative electrode material and a liquid lithium ion battery lithium supplementing agent.

A battery management system includes thermal batteries, sensors, a clock, a processor, and memory storing a data structure, and is configured to receive energy parameters and time data, calculate a rate of energy usage of the thermal batteries based on the received data, and execute battery commands to activate or disable selected thermal batteries. Energy usage data can be stored as individual data points over time, and battery commands can be received from an external computer. The system determines when to activate a second battery based on a predetermined threshold of estimated electrical energy of a first thermal battery. A battery management method includes receiving signals for voltage, current, temperature, and time duration, estimating electrical energy based on these parameters, and activating a second battery when the estimated energy falls below a predetermined threshold.

A kind of honeycomb type battery module thermal management system integrated thermoelectric device and PCM, the system shell, hexagonal honeycomb battery heat conduction frame is installed in shell interior, battery heat conduction frame center is equipped with pipe hole, liquid cooling pipe passes through pipe hole, liquid cooling pipe is connected with heat exchanger to carry out heat exchange.The outer wall surface of battery heat conduction frame is all closely attached with thermoelectric device, the hot end of thermoelectric device is closely attached with liquid cooling plate, and liquid cooling plate is connected with heat exchanger to carry out heat exchange.Battery heat conduction frame is distributed with multiple grooves at equal intervals, respectively for installing battery, PCM6, fin, groove is filled with PCM, fin is closely attached on battery, and PCM6 is wrapped around battery and fin.The application carries out the thermal management of battery by the active refrigeration / heat function of thermoelectric device and the temperature invariable characteristics of phase change material PCM when phase change, so that battery is maintained in specified operating temperature range;It improves the temperature distribution uniformity of battery unit, prevents battery thermal runaway, improves battery life and stability in different working conditions.

The utility model discloses a temperature-difference-resistant battery box which is characterized in that firstly, the stable support of electrical components in the battery box is ensured by utilizing a support assembly through a support piece and a reinforcing rib structure, and secondly, the external physical impact is effectively prevented by utilizing a protection assembly through an enclosure bulkhead and a sealing piece. And finally, electromagnetic interference is effectively shielded by utilizing the shielding assembly through the design of a top cover and a partition plate, and the whole structure is fastened through bolts, so that tight connection among the assemblies is ensured, the durability, the heat insulation property and the safety of the battery box are enhanced, and the battery box is suitable for application scenes needing high protection, heat insulation and electromagnetic shielding.

This invention relates to a high-interfacial-wetting cathode material and its preparation method in the field of thermal battery technology. The material comprises a cathode active material and a halide cathode additive, wherein the halide cathode additive accounts for 5% to 20% by mass. The cathode active material is a sulfide cathode, including one or more of FeS2, CoS2, and NiS2. The halide cathode additive is a metal halide, including one or more of nickel chloride, cobalt chloride, nickel fluoride, and copper fluoride. This solution significantly reduces the interfacial impedance between the cathode and the electrolyte, improving power performance and discharge capacity.

The invention discloses a charging management and control method and system based on a multi-bin charging cabinet device, relates to the technical field of battery charging management and control, and solves the problem of disconnection between charging current and heat dissipation capability in the prior art by directly associating a heat conductivity coefficient of a cabinet body with a constant current lifting coefficient through heat dissipation performance simulation. The setting of the constant current does not depend on a fixed mode or a single electric quantity parameter any more, but is based on the actual bearing capacity of the heat dissipation structure, so that heat accumulation in a cabinet, accelerated aging of a battery and potential safety hazards caused by the fact that the current setting is too high and exceeds the heat dissipation limit are avoided, and the problem of low charging efficiency caused by the fact that the current setting is too low is solved; meanwhile, the target constant current is subjected to dual dynamic calibration by using the nominal parameters of the battery and the heat conductivity coefficient of the cabinet body, so that the accuracy of current regulation and control is further improved, the real-time matching of the battery characteristics and the heat dissipation capability in the charging process is ensured, and the charging efficiency in the constant current stage is maximized on the premise of ensuring the charging safety.