78results about "Cells cooling/heating" patented technology

The present invention provides a simulation method, a simulation device, and a simulation program. A method for simulating a cell in which the electrolyte is a molten salt, the simulation method involving simulating the behavior of the cell and including a process for raising the temperature of the molten salt.

The present invention relates to the use of polymer-inorganic nanoparticle compositions as heat transfer fluids in battery or other electrical device systems. The electrical devices may be, in particular, batteries, electric motors, electric vehicle transmissions, power transformers, capacitors, fluid-filled transmission lines, fluid-filled power cables, computers, and power electronics such as power converters.

The invention discloses an ultrahigh-burning-speed double-layer ignition sheet in the technical field of thermal batteries, and the ultrahigh-burning-speed double-layer ignition sheet is prepared by the following steps: step 1, slurry preparation: using distilled water to immerse loose asbestos paper until the loose asbestos paper is soft, then crushing the loose asbestos paper, adding zirconium powder, and uniformly mixing to obtain a zirconium powder paper pulp solution; respectively adding barium chloride and potassium chromate into the zirconium powder paper pulp solution in a stirring state to obtain a turbid liquid containing the loose asbestos, the zirconium powder and the barium chromate, performing suction filtration to obtain a mixture containing the barium chromate, the zirconium powder and the loose asbestos, dispersing the mixture in an adhesive, and uniformly stirring to obtain slurry; wherein the mass ratio of the loose asbestos to the barium chloride to the zirconium powder to the potassium chromate is (1-10): (35-45): (15-20): (25-35); and secondly, the slurry prepared in the first step is sprayed on an ultra-high-burning-rate Al-Ni film, drying is conducted for 1.5-2.5 h under the condition of 120-180 DEG C in argon shielding gas, and the ultra-high-burning-rate double-layer ignition sheet is obtained. Compared with the prior art, the ultrahigh-burning-speed double-layer ignition sheet prepared by the invention is higher in burning speed.

The kilowatt-level metal fuel cell stack comprises a cell stack main body, a plurality of groups of first heat conduction plates are fixedly mounted on the outer surfaces of the two sides of the cell stack main body, a circulating water pipe is mounted between heat dissipation frames, and the two ends of the circulating water pipe are connected with the heat dissipation frames respectively. And the liquid outlet and the liquid return port are connected with the liquid storage bin, a circulating pump is arranged at one end of the liquid outlet, a second cooling fin set is installed on the outer surface of one side of the liquid storage bin, and a cooling mechanism is arranged on the outer surface of the second cooling fin set. The cooling liquid is driven by the circulating pump to circularly flow between the cell stack main body and the liquid storage bin, and the system realizes efficient transfer and dissipation of heat. Compared with a traditional natural cooling or air cooling mode, the temperature of the cell stack can be rapidly reduced through water-cooling circulation cooling, and stable operation of the cell stack in a high-power output state is ensured.

The present invention discloses a temperature-adjustable battery assembly and system, which belongs to the technical field of battery packs, and includes a battery housing, an electric cylinder, a sleeve plate, and a double-sided linkage temperature regulating mechanism; wherein the double-sided linkage temperature regulating mechanism includes a concave plate, two linkage shafts, a linkage bar, two connecting columns, a hinge block, two hinge shafts, a sleeve rod, and a support shaft; and a sleeve slider is fixedly installed on the top of the support shaft, and a rectangular cooling tube is fixedly connected to the top of the sleeve slider; wherein a flow guide temperature regulating linkage assembly is provided on one side of the linkage bar; and an internal interval temperature regulating mechanism is installed on one side of the battery housing. The present invention realizes temperature regulation without dead angle displacement by setting a double-sided linkage temperature regulating mechanism, and the battery pack temperature self-regulation effect is better, thereby solving the problem that it is difficult to perform large-area flow cooling on the outside and interval parts of each battery cell, thereby having temperature regulation dead angles and resulting in poor temperature regulation effect.

The invention discloses a temperature-controllable thermal battery stack. The battery stack comprises monomer layers with different thermal gradients, an end thermal insulation body, a buffer layer, an adsorption layer, a thermal balance layer and an efficient thermal insulation layer. The axial heat of the thermal battery is uniformly distributed by adopting the distribution of the monomer layers with different gradient heat and the arrangement of the middle buffer layer A; through the arrangement of a heating body D in the end thermal insulation body, the problems that the end heat impact is large in the activation process of the thermal battery and the heat loss is fast in the later working period of the battery are solved, and long-endurance working of the thermal battery is achieved; through the arrangement of the heating body D, rapid combustion of the periphery of the cell stack and rapid activation of the thermal cell are achieved, heat supply of the cell is prolonged through slow release of slow-release heating powder, heat balance of heat of the middle heating body A to the edge is achieved through the arrangement of the heat conduction layer, and radial middle heat accumulation of the cell stack is avoided. And finally, the safety problem of thermal runaway is caused.

Presented are passive temperature control systems for thermal management of electrical components, methods for making / using such thermal management systems, and aircraft equipped with smart-material activated temperature control systems for passive cooling of battery modules. A thermal management system is presented for passively cooling an electrical component stored inside a module housing. The thermal management system includes a cooling chamber that movably attaches adjacent a module housing that contains an electrical component, such as a rechargeable battery module. The cooling chamber contains a sublimable cooling agent, such as dry ice. A biasing member biases the cooling chamber away from the module housing. A smart material actuator is attached to and interposed between the cooling chamber and module housing. The smart material actuator extracts thermal energy from the module housing and, once heated to a phase transformation temperature, contracts and thereby pulls the cooling chamber into contact with the module housing.

The invention relates to the use of a polymeric-inorganic nanoparticle composition as a heat transfer fluid in battery or other electrical equipment systems. The electrical equipment can be in particular electric batteries, electric motors, electric vehicle transmissions, electric transformers, electric capacitors, fluid-filled transmission lines, fluid-filled power cables, computers and power electronics such as electric power converters.

The present application discloses a battery pack and an electrical device, belonging to the field of battery technology. The battery pack is provided with a first flow channel plate on a first wall of a box body, a first liquid cooling plate is abutted against a battery cell in a first direction, and a first single plate abutted against the battery cell in a second direction, and a valve body is inserted into a liquid inlet port of the first liquid cooling plate to block the liquid inlet port and the second flow channel. The valve body and the first single plate are arranged in the second direction to block the liquid inlet port and the liquid inlet end of the third flow channel. When the pressure on the valve body reaches a preset first pressure threshold, the liquid inlet port and the second flow channel can be connected. When the pressure on the valve body reaches a preset second pressure threshold, the liquid inlet port and the liquid inlet end of the third flow channel can be connected, and the first pressure threshold is less than the second pressure threshold, so that when the flow rate of the heat-conducting fluid entering the first liquid cooling plate is too high, it can be diverted through the first single plate to reduce the pressure of the heat-conducting fluid, and the temperature uniformity of the battery cell can be improved to ensure the safety of the battery pack.

The present invention discloses a lean liquid direct cooling energy storage battery pack, comprising a box body, which is filled with a low boiling point refrigerant; a battery pack, which is immersed in the low boiling point refrigerant in the box body; a condensation module, which is arranged in the box body and located above the battery pack; the battery pack comprises a plurality of first channel plates distributed at intervals and battery cells arranged between the first channel plates, a second channel plate is arranged at the bottom of the battery pack, a first channel in contact with the surface of the battery cell is arranged in the first channel plate, a second channel in contact with the surface of the battery cell is arranged in the second channel plate, a condensation reflux channel is arranged in the condensation module, at least one connecting channel for connecting the condensation reflux channel and the second channel is provided between the battery pack and the box body, and the condensation reflux channel, the connecting channel, the second channel, and the first channel are connected to form a circulation loop. The present invention allows the refrigerant to directly contact the battery, directly cools the battery through phase change heat absorption, and has a fast heat conduction speed and high cooling efficiency.

The present invention discloses a control method and device for a battery thermal management system, which obtains the total output power and required time required by the battery system; calculates the output time of each battery cell; determines several groups of battery cell output combinations among all battery cells; and in each group of battery cell output combinations, determines the temperature rise trend of each group of battery cell output combinations, and then selects the optimal battery cell output combination as the output scheme of the battery system based on each of the temperature rise trends. The present invention performs output combinations on the battery cells, calculates the temperature rise trend according to the position, output power and output time of each battery cell in the battery cell combination while meeting the total output power requirement of the battery system, and then determines the optimal battery cell output combination based on the temperature rise trend, thereby reducing the risk of high temperature operation when the battery system performs battery cell power output, and improving the safety of the battery system.

According to the high-safety lithium-to-dry battery and the preparation method thereof, when a telescopic conducting rod generates heat due to current transmission, the heat is quickly transmitted to a heat conducting shell through a heat conducting column, a large amount of heat is absorbed through the phase change heat absorption effect of a heat conducting ring, local temperature rise of an electrode is delayed, and meanwhile the heat is efficiently dissipated to the external environment; when the temperature continues to rise to a set threshold value, the first deformation strip deforms depending on the thermal response characteristic of the memory alloy, the heat conduction sleeve and the telescopic conducting rod are driven to move downwards, the contact area with external equipment is gradually reduced, a circuit is finally switched off, and the situation that the conductivity is reduced or thermal runaway accidents are caused due to electrode overheating is avoided; the first deformation strip and the second deformation strip are cooled and reset, and the circuit is closed after the telescopic conducting rod returns to the initial position, so that the functions of intelligent heat dissipation, overheat protection and automatic reset of the electrode part are realized through the overall design, and the safety and reliability of the battery under the high-power working condition are improved.

An insulation detection device and an insulation detection method for a cooling plate of a battery pack are provided. The device includes a detection position for placing the cooling plate of the battery pack, conductive cotton, a first conductive element, a second conductive element, and an insulation detector. The cooling plate of the battery pack is hollow, and an outer surface of the cooling plate of the battery pack is coated with an insulation coating. The conductive cotton is arranged in the detection position for wrapping the cooling plate of the battery pack. The first conductive element is connected to an inner wall of the cooling plate of the battery pack. The second conductive element is connected to the conductive cotton. A first end of the insulation detector is connected to the first conductive element, and a second end of the insulation detector is connected to the second conductive element.

The invention discloses a manufacturing method of a high-strength aluminum alloy round cast ingot for a battery liquid cooling plate, and belongs to the field of aluminum alloy casting. The method solves the problems of high crack tendency and low casting yield in the existing production of the composite core material aluminum alloy with higher Ti content. The method comprises the following steps: weighing; smelting is conducted; preparing a casting melt; and casting ingot forming. The melt is electromagnetically stirred, and it is guaranteed that components and the temperature are kept uniform; the bipolar ceramic filter is used for filtering, so that inclusions in the melt are effectively removed to ensure the purification effect; the water cooling control system provides stable water flow for the casting process, adopts a single-double drainage cooling technology, reduces cooling strength, reduces stress, effectively overcomes the defects of aluminum leakage and suspension at the casting beginning, and guarantees ingot casting forming. The size of the prepared high-strength aluminum alloy round cast ingot is phi 405 mm, the obtained cast ingot is free of through cracks, smooth in surface, free of looseness, slag inclusion and other defects, the yield is improved to a certain extent and reaches 87%, and the problem that the yield of the cast ingot prepared through an existing method is low is solved.

Traction battery thermoplate assembly, comprising: a structure (162) which has edge regions (172) that define a cavity and is configured to support an array of battery cells (88, 150, 160); a thermal plate (90, 154, 174) which is located inside the cavity and adjacent to the battery cell row (88, 150, 160); a spring assembly (178) which is installed within the cavity between the structure (162) and the thermal plate (90, 154, 174) and is configured such that a force is exerted on the thermal plate (90, 154, 174) so ​​that the thermal plate (90, 154, 174) contacts the battery cell array (88, 150, 160) in order to transfer heat between the battery cell array (88, 150, 160) and the thermal plate (90, 154, 174); and wherein the spring assembly (178) has a body (220, 230) which defines several tabs (222, 232) configured to extend outwards from a plane defined by the body (220, 230) or to extend in a wave-like manner above and below a plane defined by the body (230).

The present disclosure provides a temperature control device and a control method for the temperature control device and a computer storage medium. The control method includes: determining that a first predetermined condition is satisfied, controlling a main refrigerant path to be in communication with a second refrigerant branch, to enable a heat accumulator to store energy; obtaining an outlet water temperature of a main heat transfer path; and based on the outlet water temperature being less than a first set value and determining that a second predetermined condition is satisfied, controlling the main heat transfer path to be in communication with a second heat transfer branch, to enable the heat accumulator to release heat. According to the control method of the present disclosure, a refrigerant system is controlled to operate, and the main refrigerant path is controlled to be in communication with the second refrigerant branch, to store heat in the heat accumulator. When a battery pack has a heating demand, that is, when the outlet water temperature of the main heat transfer path is less than a first determined temperature, the main heat transfer path is controlled to be in communication with the second heat transfer branch. This allows the heat stored in the heat accumulator to be transferred to the battery pack through the second heat transfer branch and the main heat transfer path, to compensate for insufficient heating at an initial start-up stage of a compressor and meet the heating demand of the battery pack.

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.

A method of cooling a rack of heat dissipating components comprises cooling air, and porting the cooled air into a volume in front of the rack from above the volume. The method further comprises moving the cooled air from the volume in front of the rack to a plenum at a rear portion of the rack to pressurize the plenum. The cooled air is moved with an air mover disposed at a bottom portion of the rack, The method also comprises flowing air from the pressurized plenum past or through heat dissipating components in the rack to the volume in front of the rack, by force of pressure in the plenum through air-directing ports in the plenum. The air may be flowed through the heat dissipating components, around the heat dissipating components, or both. The method further comprises drawing warm air from an upper portion of the volume in front of the racks to cool it again.

A battery module and a method of assembling the battery module are provided. The battery module includes a cooling surface having a first area and a second area with different cooling capacities, an adhesive including a first component having a first thermal conductivity and a second component having a second thermal conductivity, and a first battery and a second battery. The first battery is secured to the first area by a first portion of the adhesive and the second battery is secured to the second area by a second portion the adhesive. The first portion of the adhesive has a first ratio of the first component to the second component and the second portion of the adhesive has a second ratio of the first component to the second component. The first and second ratios are different and compensate for the different cooling capacities of the first and second areas.

Provided is a temperature control device and a control method therefor, a computer storage medium, and a heating and ventilation device. The control method includes: controlling a refrigerant main path to be in communication with a second refrigerant branch; obtaining an outlet temperature of a cooling liquid main path; and controlling the cooling liquid main path to be in communication with a second cooling liquid branch in response to the outlet temperature being greater than a first set value. According to the control method of the present disclosure, a refrigeration unit is controlled to operate, and the refrigerant main path is controlled to be in communication with the second refrigerant branch, to store cooling capacity in a cold storage device. When a battery pack has a cooling capacity demand, the cooling liquid main path is controlled to be in communication with the second cooling liquid branch, to transport the cooling capacity stored in the cold storage device to the battery pack through the second cooling liquid branch and the cooling liquid main path, to make up for insufficient cooling supply in an initial startup stage of a compressor and satisfy the cooling capacity demand of the battery pack.

Battery structure with a flexible water-cooling plate, including a plurality of battery modules, the battery modules are arranged in multiple rows in a straight line, and further including a flexible water-cooling plate disposed between the battery modules, the flexible water-cooling plate is arranged between the gaps of the adjacent linearly arranged battery modules; the flexible water-cooling plate is formed by enclosing and fitting long strip-shaped flexible membranes to form a hollow water-cooling cavity, and water nozzles are respectively provided at both ends of the flexible water-cooling plate in the length direction, and the inner holes of the water nozzles are communicated with the water-cooling cavity. In the present invention, the flexible membrane is enclosed and fitted to form a water-cooling cavity. During the operation of the battery, the water-cooling cavity is in an internally pressurized state. Since the flexible water-cooling plate is flexible, it will automatically bulge and fit on the heat exchange surface of the battery module. Even if the flatness of the heat exchange surface of the battery module is poor or the heat exchange surface is not a flat surface, such as the cylindrical surface of a cylindrical battery, it can ensure good fitting between the flexible water-cooling plate and the battery module, and ensure that the thermal resistance of the heat conduction from the battery module to the flexible water-cooling plate is basically the same.

Described herein is a system for thermal management of a component, such as a battery for an electric vehicle. The system comprises an electrical component and one or more panels thermally coupled to the electrical component. Each panel comprises a plurality of passages for conveying a working fluid around the panel. The one or more panels are arranged to form a hermetically sealed system such that the working fluid is configured to communicate heat energy around the sealed system. The system further comprises a heat exchanger mechanism in thermal communication with at least one of the plurality of panels so as to communicate heat energy to and / or from the electrical component via the plurality of panels.

Described herein are energy storage systems comprising battery units and low-oxygen enclosure units that form enclosed environments around the battery units. Also described are methods of operating such energy storage systems such as achieving and maintaining low oxygen concentrations in the enclosure units (e.g., less than 100 ppm) and other conditions (e.g., moisture, temperatures) while supporting battery unit operations (e.g., heat dissipation, degassing). An enclosed environment may have a volume of at least 50 m3, sufficient for a battery unit with a capacity of at least 1 MWh. In addition to environment purging capabilities, the enclosure unit comprises an oxygen-getter unit (e.g., molten media) which allows to reduce the number of purging cycles and addresses possible oxygen ingress (e.g., through the enclosure walls and / or outgassing). In some examples, the enclosure unit provides efficient heat dissipation to the external environment by reducing insulation / enhancing heat transfer through the enclosure walls.

The application discloses a heat dissipation device, a battery pack and an energy storage device. The heat dissipation device comprises a liquid cooling plate, the liquid cooling plate comprises a liquid inlet, a liquid outlet and a cooling channel communicated between the liquid inlet and the liquid outlet, and a uniform temperature plate is cross-connected with the liquid cooling plate. The heat dissipation device can not only dissipate heat for the battery cell in contact with the liquid cooling plate, but also dissipate heat for the uniform temperature plate, so that the uniform temperature plate further dissipates heat for the battery cell, the heat dissipation area of the battery cell is ensured, and the cooling performance is improved.

The invention discloses a thermal battery thermal insulation structure and a preparation method thereof, the structure comprises a thermal insulation layer A, a thermal insulation layer B and a connecting layer, the thermal insulation layer A wraps a thermal battery, and the connecting layer is arranged between the thermal insulation layer A and the thermal insulation layer B. The heat insulation structure is smooth, has silver luster and can effectively reflect light and reduce radiative heat transfer, the heat insulation layer A has the advantages of being thin and soft in texture, the shaping effect is good, the heat insulation layer A can be tightly attached to the thermal battery and the heat insulation layer B, the gap space is reduced, and the heat insulation layer A and the heat insulation layer B are tightly connected through the connecting layer. Therefore, the structure can be applied to a low-surface-temperature thermal battery needing long-time power supply.

The invention relates to a novel cooling system integrated into lithium-ion (Li-ion) batteries. This system comprises two flexible liquid-cooling plates configured to dissipate heat generated by the cylindrical Li-ion batteries, in particular heat accumulated at the center thereof. These flexible plates incorporate a specific mixture of water and glycol, thereby optimizing their thermal conductivity while preventing corrosion and algal growth. The cooling process relies on liquid convection, thereby ensuring optimal battery operation and extending battery service life.

The present application relates to a kind of composite thermal insulation materials and thermal protection method for lithium sub-battery, belong to battery thermal protection technology.The present application provides a kind of thermal insulation scheme of disposable lithium sub-battery, through the five-layer thermal insulation structure of shell-flexible aerogel felt-aluminum foil paper-air-EVA foam-aerogel powder-battery, the constant temperature of lithium battery is maintained when discharging, especially for lithium battery in the case of using in the summer high temperature exposure or winter extremely cold environment, can effectively improve the discharge voltage of battery, increase the discharge capacity of battery, maintain the temperature of battery, and the electrical equipment can work normally.

The present invention relates to a thermal battery with isolated output characteristics, belonging to the technical field of thermal batteries. The thermal battery of the present invention includes: a unit thermal battery, an output cable, and an isolated output structure. The activation signal of the thermal battery is input and the electric energy is output through the output cable. The designed cover plate of the unit thermal battery functions to install the isolated output structure, and there are mounting and fixing holes on the cover plate, which can be installed with threads. The isolated output structure is installed on the top of the unit thermal battery, and the isolated output structure functions to insulate heat and dissipate heat for the Schottky diode of the electronic component. The unit thermal battery, the isolated output structure, and the output cable are integrated, with a compact structure and simple and convenient use. A Schottky diode is added to the output end of the thermal battery of the present invention. By utilizing the characteristics of forward conduction and reverse cut-off of the Schottky diode, the high-voltage instantaneous induction pulse generated on the projectile is isolated from the forward output voltage of the thermal battery, improving the working reliability of the thermal battery.