101results about "Deferred-action cells" patented technology

A moisture electric generating device comprising: a first electrode and a second electrode; and disposed between the first electrode and the second electrode and a functional layer which releases electrical charge carriers; the functional layer includes at least two sub layers; a first sub layer acting as a moisture reservoir to a second sublayer, to provide moisture to the second sublayer; the second sub layer which produces electrical charge carriers as a function of moisture available from the first sub layer.

Single use and replaceable self-powered aircraft compartment thermal indicators that deliver a localized visually detectable signal that can be perceived by personnel at the exterior of an aircraft component and that can be activated on demand to signal the presence of a temperature within an aircraft compartment that exceeds a threshold temperature and that can be tested in situ, and methods of use are disclosed.

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 present application relates to the technical field of battery thermal management, in particular to a preparation method of a thermal activation battery with silicon-aluminum alloy high-temperature phase change material; in the preparation method, a certain amount of aluminum powder and silicon powder are selected as raw materials and mixed to obtain a liquid alloy by heating, the liquid alloy is defoamed and degranulated, and finally the bulk alloy is cooled to obtain a block alloy, the block alloy is sliced according to the size to obtain a sheet material, and the sheet material is assembled into the battery body in a layer insertion manner; the alloy phase change material prepared by the present scheme has high thermal conductivity, suitable phase change temperature and phase change enthalpy value, thereby having strong thermal management efficiency, being beneficial to regulating and controlling the surface temperature of the battery and prolonging the service life of the battery; in the present scheme, the alloy phase change material is cut and assembled into the thermal activation battery, and has the advantages of low cost, simple operation, good use effect and the like.

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 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 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 invention relates to a retractable positioning mandrel which solves the problems that resistance is increased in the moving and picking process of a flow choking ring and the risk of breakage of the flow choking ring exists in an existing device. The device is mainly divided into two parts, wherein one part is a power component consisting of a cylinder bracket (1), a needle-shaped cylinder (2) and a cylinder contact (16); according to the other part, a mandrel body is composed of a base (3), a spring steel wire (4), a connecting stand column (5), a set screw I (6), a limiting disc (7), an outer expansion push piece (8), a screw I (9), an expansion base (10), a conical expansion core (11), a set screw II (12), a screw II (13), a contraction tension spring (14) and a push rod (15). The cylindrical cage-shaped structure formed by the spring steel wires evenly distributed around the circumference is adopted to replace an integral positioning mandrel to serve as a positioning piece of the choke ring, the contact area between the positioning piece and a workpiece can be greatly reduced, resistance during relative movement is reduced, and the reliability of automatic picking of the choke ring can be better improved.

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.

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.

The invention discloses a flexible ionic thermal battery and a preparation method thereof, the flexible ionic thermal battery comprises an ionic gel electrolyte and asymmetric electrodes, and the asymmetric electrodes are an activated carbon fiber cloth cathode and a polyaniline anode; the activated carbon fiber cloth cathode is obtained by activating carbon fiber cloth with a mixed solution of concentrated nitric acid and concentrated sulfuric acid; the ionic gel electrolyte is obtained by soaking acrylamide and acryloyloxyethyl trimethyl ammonium chloride dual-network gel in an electrolyte solution of FeCl3 / HCl. According to the flexible ionic thermal battery disclosed by the invention, a built-in potential field is constructed under a near-isothermal condition through electrode-electrolyte interface reaction characteristic difference, and decoupling of dependency of the potential field and a temperature field in a traditional quasi-solid-state ionic thermal battery is realized, so that the ionic thermal battery can finish thermal charging through near-isothermal temperature rise in an ultrathin form within 1mm, and the flexible ionic thermal battery has a wide application prospect. And stable discharge output is realized in a constant-temperature stage.

This invention provides a double-layer, high-energy-density electrode, a storage lithium battery, and a method for preparing the same. The double-layer, high-energy-density electrode includes a current collector, a first active layer, and a second active layer. The first active layer is located between the current collector and the second active layer. The first active layer contains an energy-type active material, and the second active layer contains a pre-charged power-type active material. The open-circuit voltage difference between the energy-type active material and the pre-charged power-type active material is ≤0.5V. This invention provides a double-layer, high-energy-density electrode for storage lithium batteries with fast activation, high energy density, and good rate performance. It constructs an efficient conductive network, improving the battery's discharge performance. By controlling the porosity of the second material layer to be greater than that of the first material layer and by creating seepage drainage grooves on the surface of the second material layer, the electrolyte wetting rate of the electrode is increased, shortening the activation time.

The invention provides a lithium-boron alloy, a preparation method thereof and application of the lithium-boron alloy as a thermal battery negative electrode material, and belongs to the technical field of thermal battery negative electrode materials. The lithium-boron alloy is prepared from the following raw materials: 55-64 parts of battery-grade metal lithium, 2-4 parts of magnesium powder and 34-42 parts of modulated boron powder, wherein the modulated boron powder is prepared from fine crystal boron powder, a boron-containing compound and amorphous boron powder. The particle size of the prepared boron powder is smaller, and a more compact alloy framework is formed by the prepared boron powder and the pre-alloying of the prepared boron powder because a carbon element or a silicon element in the prepared boron powder can form a framework with lithium and is interwoven with a lithium-boron framework to form a firmer framework structure, so that the structure of the alloy is more stable. The lithium-boron alloy is used as a thermal battery negative electrode material, after the assembled thermal battery is activated for 2 hours, the battery voltage can still be kept at 75% or above of the peak voltage, the discharging is stable in a discharging test, and the pulse performance is good.

The invention discloses a step-by-step heat supply single battery for a thermal battery, a heat supply negative plate and a preparation method of the heat supply negative plate, and belongs to the technical field of thermal batteries. The heat supply negative plate is mainly composed of lithium powder, boron powder and aluminum powder according to a specific proportion, wherein the content of lithium is 30%-60%, the content of boron is 35%-45%, and the content of aluminum is 5%-20%. The heat supply negative plate is used as a negative electrode material while providing heat, so that the use amount of a heating plate can be reduced, the specific energy of the battery is improved, and the safety and the discharge performance of the high-capacity thermal battery are improved. The preparation process is carried out under the protection of inert atmosphere, and comprises the steps of drying, mixing, tabletting, sintering and laminated assembling. The invention is suitable for a thermal battery system with high specific energy and high safety.

The application belongs to the field of energy storage materials, and particularly relates to a boron-containing composite lithium metal negative electrode material, a preparation method and application thereof. The boron-containing composite lithium metal negative electrode material is composed of metal lithium, boron and other elements T, and the mass percentage of the metal lithium is 50-85%, the mass percentage of the boron is 10-30%, and the mass percentage of the other alloy elements T is 5-20% based on the total mass of the boron-containing composite lithium negative electrode material, and the total mass percentage of the boron and the other alloy elements T in the composite material is 15-50%. The boron element is provided by a boron-containing compound or jointly provided by a boron-containing compound and elemental boron. The preparation method is designed as follows: the metal lithium, elemental boron and boride are high-temperature smelted under a protective atmosphere. The boride is used as a boron source to generate a lithium boron fiber phase and a second lithium alloy phase in situ with lithium, and the content of the lithium boron fiber can be further regulated by adding elemental boron, so that the structural stability and electrochemical performance of the composite electrode are comprehensively improved.

The application discloses a micro-thermal battery activation device and relates to the technical field of micro-thermal battery activation. The device comprises a battery base body, a mounting seat is fixedly connected to the top of the battery base body, a filler is mounted at the bottom of the mounting seat, a plurality of ignition caps are inlaid between the filler and the bottom of the mounting seat, a circular ring seat is fixedly arranged in the mounting seat, a plurality of striking pins are vertically and slidably arranged in the surface circular holes of the circular ring seat through elastic members; three groups of force storage assemblies are arranged, each group of force storage assemblies corresponds to a group of trigger assemblies, the trigger conditions of the three groups of trigger assemblies are different, the force storage assemblies are matched with the trigger assemblies, multi-factor triggering in a complex environment is realized, the situation of activation failure is avoided, the force storage assemblies are in a non-force storage state in a non-triggering state, the spring is prevented from being in a stressed state for a long time, stress fatigue is avoided, and long-term preservation is more facilitated.

The present disclosure provides a modular biodegradable battery system addressing limitations of conventional batteries. The system comprises removable energy pods, each containing a first electrode, a second electrode, separate compartments for organic material and vinegar, and an activation mechanism to mix these components into a biodegradable slurry. A reusable modular base removably couples with the energy pods. This design enables customizable power configurations while utilizing environmentally friendly materials. The activation mechanism allows on-demand power generation, overcoming shelf-life issues of pre-mixed biodegradable batteries. The modular base facilitates easy replacement of depleted pods and supports series or parallel connections for voltage or current amplification. This system offers a sustainable alternative to traditional batteries, reducing electronic waste and environmental impact.

The invention relates to a heating negative electrode integrated material for a thermal battery, a high-specific-energy single battery and a preparation method of the high-specific-energy single battery, belonging to the technical field of thermal batteries. The formula of the heating negative electrode integrated material for the thermal battery comprises lithium, magnesium oxide and high-calorific-value metal / metalloid powder (selected from boron, aluminum, silicon, magnesium and iron); the lithium accounts for 30%-70% by weight, the magnesium oxide accounts for 0%-15% by weight, and the high-calorific-value metal / metalloid powder accounts for 25%-70% by weight. The heating negative electrode integrated material prepared by the invention has the dual functions of a negative electrode and a heating material in addition to exerting the advantages of the respective raw materials, and the weight of a single battery can be greatly reduced; good ion and electron conductivity is achieved, and the large-current discharge characteristic is good; no gas is generated in the combustion process, and the internal pressure of the thermal battery is prevented from being too high. Under the condition of the same volume and weight, the single battery prepared by the invention has longer working time.

Single use and replaceable self-powered aircraft compartment thermal indicators that deliver a localized visually detectable signal that can be perceived by personnel at the exterior of an aircraft component and that can be activated on demand to signal the presence of a temperature within an aircraft compartment that exceeds a threshold temperature and that can be tested in situ, and methods of use are disclosed.

A moisture detection device 1 comprising: a battery 10 that starts power generation when wetted; and a drive unit 20 that is driven by the power generated by the battery 10 and outputs a signal or alarm sound indicating that moisture has been detected.

An electrode substrate (10) according to the present disclosure is characterized by comprising: a base material (20) that has a first surface (21) and a second surface (22); and a positive electrode (30) and a negative electrode (40) that are disposed separated from each other on the first surface (21) or the second surface (22) of the base material (20), wherein a liquid permeates between the positive electrode (30) and the negative electrode (40) to discharge electricity, and the distance between the positive electrode (30) and the negative electrode (40) is 0.1–100 mm. In addition, by providing a transmission unit (70) or a notification unit (80) that is electrically connected to the electrode substrate (10), the electrode substrate (10) may constitute a liquid detection sensor (100) that is capable of detecting adhesion of a liquid.

The invention discloses a molten salt electrolyte. The molten salt electrolyte provided by the invention is prepared from the following components: 3.0 mol% to 6.0 mol% of LiF, 5.0 mol% to 15.0 mol% of LiCl, 60.0 mol% to 75.0 mol% of LiBr and 18.0 mol% to 25.0 mol% of CsCl. The invention also discloses application of the molten salt electrolyte in the fields of thermal batteries and molten salt heat transfer and energy storage. According to the invention, the LiF-LiCl-LiBr-CsCl molten salt electrolyte with the melting point of 269.0 + / -2.0 DEG C, the conductivity of not less than 1.89 S / cm at the temperature of 500.0 DEG C and the decomposition temperature of 804.0 DEG C is provided and prepared for the first time. Compared with a common LiCl-LiBr-KBr electrolyte, the molten salt electrolyte has the advantages that the melting point is reduced by 52.0 DEG C, the conductivity at 500.0 DEG C is improved by at least 0.16 S / cm, the energy consumption is reduced by 93.9 J / g, the decomposition temperature is improved by 40.0 DEG C, and the electrochemical window is widened by at least 20.0 mV (400.0-500.0 DEG C), so that the service life of a thermal battery can be effectively prolonged, the activation time of the thermal battery can be effectively shortened, the working temperature range of the thermal battery can be widened, and the service life of the thermal battery can be prolonged. The fused salt electrolyte is a very potential candidate fused salt electrolyte, and has a huge application value in the fields of thermal batteries and fused salt heat transfer and energy storage.

The invention discloses a microminiature thermal battery activation device, and relates to the technical field of microminiature thermal battery activation. Comprising a battery base body, a mounting seat is fixedly connected to the top of the battery base body, filler is mounted at the bottom of the mounting seat, a plurality of ignition caps are mounted between the filler and the bottom of the mounting seat in an embedded manner, a circular ring seat is fixed in the mounting seat, and a plurality of firing pins are vertically and slidably mounted in circular holes in the surface of the circular ring seat through elastic parts; the three sets of force storage assemblies are arranged, each set of force storage assembly corresponds to one set of triggering assembly, the triggering conditions of the three sets of triggering assemblies are different, the three sets of triggering assemblies are matched with the force storage assemblies, multi-factor triggering in a complex environment is achieved, the situation of activation failure is avoided, and the force storage assemblies are in a non-force storage state in a non-triggering state; the spring is prevented from being in a stress state for a long time to cause stress fatigue, and long-term storage is facilitated.

The invention relates to the technical field of thermal batteries, and discloses a method for improving the safety of a thermal battery pack, which is characterized in that a heat conduction layer and a rapid heat dissipation system are sequentially arranged outside a unit thermal battery or a battery pack, and the heat conduction layer conducts out and uniformly disperses heat generated by the battery; the phase-change material layer in the rapid heat dissipation system absorbs heat to control the temperature range, and the cold circulation device maintains the functionality of the phase-change material and carries out redundant heat. On the premise that the weight and the size of the battery are not obviously increased and the performance of the battery is not influenced, the safety performance of the thermal battery pack is greatly improved, and the thermal battery pack adapts to extreme mechanical and temperature environments and is suitable for high-power and long-time discharge type thermal batteries.

The invention relates to the field of thermal batteries, and discloses a FeF3 / FeOF composite positive electrode material with a heterostructure and a preparation method of the FeF3 / FeOF composite positive electrode material. The preparation method comprises the following steps: dissolving ferric salt in an alcohol reagent added with an additive, then dropwise adding an ammonium fluoride or ammonium bifluoride aqueous solution to prepare an iron trifluoride hydrate compound, and further preparing the FeF3 / FeOF thermal battery positive electrode material with a heterostructure through a roasting method. Wherein the appearance of FeOF can introduce out-phase energy level, the FeOF and FeF3 form a Schottky heterojunction, a built-in electric field of a compound interface is formed, the migration rate of electrons and ions in a material body phase is promoted, and the instantaneous discharge power is improved. In addition, the interface of the FeF3 / FeOF compound is also an important active site for storing ions, so that the specific capacity of the material is improved.

The invention discloses a molten salt electrolyte material, a preparation method thereof and a prepared fluorine ion thermal battery, a porous silicon dioxide material adsorbs molten eutectic salt at high temperature to prepare the molten salt electrolyte material, and the molten salt electrolyte material is applied to the fluorine ion thermal battery. In the obtained electrolyte material, silicon dioxide is used as a molten salt adsorbent and a flow inhibitor, and a larger specific surface area can adsorb a higher proportion of molten eutectic salt, so that the rapid conduction capability of fluorine ions in the electrolyte is enhanced. The silicon dioxide and the fluorine ion thermal battery positive and negative electrode material are inert in high-temperature reaction, so that side reaction in the discharge process is avoided, and the utilization efficiency of the fluorine ion thermal battery positive and negative electrodes is improved. In addition, the silicon dioxide with relatively strong adsorption capacity can block the dissolving shuttling of positive and negative electrode materials, so that the high-temperature no-load safety is improved, and the discharge performance of the fluorine ion thermal battery is further improved.

The invention discloses a preparation method and application method of a self-reaction heat release foil, and the preparation method of the self-reaction heat release foil at least comprises the following steps: dissolving graphene oxide powder into absolute ethyl alcohol to prepare a graphene dispersion liquid; spin-coating a substrate with the graphene dispersion liquid, and baking the substrate to obtain a graphite sacrificial layer; depositing a heat release foil on the graphite sacrificial layer; and the substrate, the graphite sacrificial layer and the heat release foil are put into deionized water to be soaked, so that the graphite sacrificial layer is gradually dissolved and broken, and the heat release foil is stripped from the substrate. The preparation method provided by the invention can realize convenient stripping of the heat release foil and the substrate, and the prepared heat release foil can greatly shorten the activation time of the thermal battery, reduce the thermal shock strength of the temperature to internal components and guarantee stable operation of the battery, and in addition, the prepared heat release foil adopts a multi-layer functional structure design, so that the thermal battery is more stable in performance. Therefore, the thickness ratio of each functional layer can be accurately regulated and controlled, the homogenization of an internal temperature field of the thermal battery is realized, and a safe, controllable, clean and efficient intelligent heat management scheme is provided for the thermal battery.

Embodiments of the present invention are directed to a liquid delivery apparatus. A non-limiting example of the apparatus includes a substrate including a cavity formed in a surface of the substrate. The apparatus can also include a membrane disposed on the surface of the substrate covering an opening of the cavity. The apparatus can also include a hydrophobic layer disposed on the membrane. The apparatus can also include a seal disposed between the membrane and the substrate, wherein the seal surrounds the opening of the cavity. The apparatus can also include an electrode layer coupled to the membrane.